• The results obtained from equilibrium isotherm adsorption studies of Cu 2+ ion were an-alyzed in five adsorption models namely: Langmuir, Freundlich, Temkin, Elovich and Dubin- Ra-dushkevich. (scirp.org)
  • Malek, A. and Farooq, S. (1996) Comparison of Isotherm Models for Hydrocarbon Adsorption on Activated Carbon. (scirp.org)
  • Isotherm, kinetic and thermodynamic study of tetracycline adsorption were investigated. (researchsquare.com)
  • The equilibrium adsorption data were modeled using Freundlich and Langmuir isotherm equations and the corresponding isotherm parameters were calculated and discussed in detail. (upt.ro)
  • The adsorption equilibrium data were fitted well with the Langmuir isotherm, which revealed that the maximum adsorption capacities for monolayer saturation of Cd(II), Pb(II), and Cu(II) were 0.555, 0.733 and 0.827 mmol/g, respectively. (iwaponline.com)
  • The isotherm results showed that the equilibrium data followed Langmuir isotherm with the maximum adsorption capacity of 133.62, 131.96 and 125.68mg/g for XG-g-IA/BT, XG-g-IA/MMT and XG-g-IA/KT hydrogel composites at 45°C and pH=5, respectively. (nsmsi.ir)
  • Thermodynamic studies indicated that the adsorption is physical, which is consistent with the results of the isotherm models. (scialert.net)
  • Freundlich isotherm model fitted pretty well with the isotherm experiment data, and the isotherm experimental data were preferably described by pseudo-second order model indicating the chemical adsorption process, and the intra-particle diffusion also involved in the adsorption process. (eeer.org)
  • The results of which represented the best fit between adsorption with Langmuir isotherm and the pseudo-second-order kinetic model. (ac.ir)
  • Potential of using green adsorbent of heavy metal removal from aqueous solutions: Adsorption kinetics, isotherm, thermodynamic, mechanism and economic analysis. (ac.ir)
  • The experimental results showed that it is an adsorption reaction that follows Langmuir isotherm model. (riejournal.com)
  • Langmuir, Freundlich, Harkin Jura and Halsey adsorption isotherm were used to studying adsorption efficiency of Saccharum bengalense. (ac.ir)
  • Sorption experiments showed a good correlation for the linear adsorption isotherm, as well as the desorption experiments. (deepdyve.com)
  • 78, 112 5.2.1 Equilibrium Adsorption Isotherm, Adsorption Process. (westflo.org)
  • Adsorption isotherms (Langmuir, Freundlich and Dubinin-Radushkevich (D-R)) and thermodynamic parameters were calculated and obtained data were evaluated. (scialert.net)
  • The removal of cadmium, zinc and lead corresponding to a superficial adsorption process, was evaluated using the theories of Langmuir and Freundlich. (csic.es)
  • Langmuir and Harkin Jura adsorption isotherms well explained the adsorption process as compared to other isotherms with correlation coefficient 0.943 and 0.968 respectively. (ac.ir)
  • The objectives of this study were therefore (i) to determine cadmium adsorption capacity of water treatment residual nanoparticles and to investigate the pertinent adsorption mechanism and (ii) to study the effects of operational parameters including adsorbent dosages, solution pH, and competing cations on the removal of Cd by nWTRs. (hindawi.com)
  • This study aimed to synthesize Fe 3 O 4 @Methylcellulose/3-Aminopropyltrimethoxysilane (Fe 3 O 4 @MC/APTMS) as a new magnetic nano-biocomposite by a facile, fast, and new microwave-assisted method and to be utilized as an adsorbent for tetracycline (TC) removal from aqueous solutions. (researchsquare.com)
  • The synthesized adsorbent exhibited outstanding properties, including proper removal efficiency of TC, excellent reusability, and simple separation from aqueous media by a magnet. (researchsquare.com)
  • Consequently, it is highly desirable that Fe 3 O 4 @MC/APTMS magnetic nano-biocomposite could be used as a promising adsorbent for TC adsorption from aqueous solutions. (researchsquare.com)
  • The SEM morphology indicated the adsorbent's high surface roughness that is evenly dispersed before adsorption and lower adsorbent porosity after adsorption. (rjees.com)
  • FTIR spectrum of the adsorbent before and after adsorption showed peaks with slight shifts in the position of carboxylic (1682.92-1670.91 cm -1 ) and amine (1615.86-1560.15 cm -1 ) groups attributed to the attachment of Cu (II) ions via functional groups. (rjees.com)
  • Adsorption characteristics of locally available inexpensive natural adsorbent coconut shells were studied for Cu(II) removal. (vilniustech.lt)
  • The results of SEM results showed that the nonuniform structure of the adsorbent surface became smoother after the absorption of copper cations. (nsmsi.ir)
  • The removal efficiency of the adsorbent is to be considered an output layer and the adsorption parameters such as pH, time, initial concentration, temperature etc., are to be considered an input layer of the ANN model. (scialert.net)
  • Activated carbon is known an as appropriate adsorbent due to its high adsorption capacity for most pollutants, especially heavy metals. (ac.ir)
  • Based on the results, the adsorption capacity of the modified activated carbon was obtained at 120 mg g-1 adsorbent. (ac.ir)
  • The parameters affecting adsorption such as the amount of used adsorbent, as well as solution pH, primary concentration, and contact time were optimized, followed by performing the adsorption process under optimal conditions. (ac.ir)
  • The optimal adsorption conditions included the pH of 6, contact time of 60 min, adsorbent amount of 50 mg, and primary cadmium concentration of 80 ppm. (ac.ir)
  • The effects of pH, concentration of metal ions and adsorbent dose were conducted. (wwjournal.ir)
  • Optimization of adsorption was carried out by the initial solution pH ranged from 3 to 6, the initial metal ions concentration ranged from 10 to 100 mg/l and the adsorbent dose ranged from 1 to 7.5 g/l. (wwjournal.ir)
  • Under these conditions, optimal values of initial pH solution, concentration of metal ions and adsorbent dose were found at 6, 100 mg/l and 2.5 g/l respectively. (wwjournal.ir)
  • The maximum removal of copper ions was obtained at low copper ion initial concentration, high adsorbent dosage, low temperature, and high agitation speed. (riejournal.com)
  • In this research, the ability of magnesium oxide (MgO) nanoparticles to the adsorbent was studied for the removal of Sunset Yellow (SY) dye in an aqueous solution. (ac.ir)
  • Studying the parameters that were effective on adsorption revealed that the PPAP-MPTMS-MCM-41 adsorbent was the most effective in the adsorption of nickel (II) from a standard solution (Conc. (irost.ir)
  • Evaluation of pyrolyzed areca husk as a potential adsorbent for the removal of Fe 2+ ions from aqueous solutions. (irost.ir)
  • Bhat Irshad Ul Haq, Elias Nursafura B and Khanam Zakia, Adsorption Studies of Cr (VI) and Fe (II) Aqua Solutions Using Rubber Tree Leaves as an Adsorbent, Int. Res. (isca.me)
  • Investigating the Potential of Cadmium Ions Removal from Aqueous Solutions using Date-palm Leaf Ash. (ac.ir)
  • Adsorption studies on copper, cadmium, and zinc ion removal from aqueous solution using magnetite/carbon nanocomposites. (ac.ir)
  • 2010). Removal of cadmium (II), lead (II), and chromium (VI) ions from aqueous solution using clay, Toxicological and environ chemistry 92 (8),1435-1446. (irost.ir)
  • Torab-Mostaedi1 M., Ghassabzadeh2 H., Ghannadi-Maragheh1 M., Ahmadi S. J. and Taheri D H., Removal of cadmium and nickel from aqueous solution using expanded perlite, Braz. (isca.me)
  • Modeling adsorption of copper(II), cobalt(II) and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. (ufop.br)
  • There are many techniques for removing metal ions from aqueous solutions 2 , 3 . (scialert.net)
  • Removal of heavy metal ions from aqueous system by ion-exchange and biosorption methods. (ac.ir)
  • In the present study, the adsorption of Pb(II) metal ions from aqueous solution by chitosan nanoparticles was investigated. (wwjournal.ir)
  • Adsorption of heavy metal ions from aqueous solution by polyrhodanine-encapsulated magnetic nanoparticles. (irost.ir)
  • The kinetic parameters were evaluated utilizing the pseudo-first-order and pseudo-second-order equations, and the adsorption kinetics followed the mechanism of the pseudo-second-order equation for all systems studied, evidencing chemical sorption as the rate-limiting step of adsorption mechanism and not involving a mass transfer in solution. (scirp.org)
  • Optimal Pseudo-Average Order Kinetic Model for Correlating the Removal of Nickel Ions by Adsorption on Nanobentonite. (ac.ir)
  • E. Sharifpour, H.Z. Khafri, M. Ghaedi, A. Asfaram, R. Jannesar, Isotherms and kinetic study of ultrasound-assisted adsorption of malachite green and Pb2+ ions from aqueous samples by copper sulfide nanorods loaded on activated carbon: Experimental design optimization, Ultrasonics Sonochemistry, 40 Part A, (2018) 373-382. (ac.rs)
  • Investigating the kinetic models and mass transfer of this adsorption process showed that the experimental data were in good agreement with the pseudo-second-order kinetic model and the intra-particle mass transfer model. (irost.ir)
  • Kinetic study showed that pseudo second order was best followed by the adsorption process with correlation coefficient 0.997. (ac.ir)
  • 3.4.2 Solving Adsorption Reaction Models The Elovich model was the most satisfactory to describe the adsorption kinetic data. (westflo.org)
  • My research interest is in the areas of environmental pollutants and their safe removal, preparation of various nano-materials to prevent the environment, water and wastewater treatment, adsorption and ion-exchange, adsorption potential of oil palm products and by-products, instrumental methods of analysis, thermodynamic and kinetic studies, and activated carbons and its electrochemical properties. (usm.my)
  • Adsorption of Cu2+ from aqueous solution onto iron oxide coated eggshell powder: Evaluation of equilibrium, isotherms, kinetics, and regeneration capacity. (vilniustech.lt)
  • The adherence of adsorption kinetics to the pseudo-second-order model suggested a chemical interaction as the rate-determining step. (ac.ir)
  • Modeling pseudo-second-order kinetics of orange peel-paracetamol adsorption process using artificial neural network. (ac.ir)
  • Batch experiments were carried out to study equilibrium isotherms, kinetics, and thermodynamics by using an initial lead (Pb 2+ ions) concentration of 50 to 100 mg/L at pH 5.5. (ncsu.edu)
  • Alao O., Ajaelu Chijioke J. and Ayeni,Kinetics, Equilibrium and Thermodynamic Studies of the Adsorption of Zinc(II) ions on Carica papaya root powder, Res. (isca.me)
  • An experimental analysis was performed to characterize the kinetics and the equilibrium of copper biosorption onto the produced beads. (westflo.org)
  • Sorption/adsorption isotherms were also established for the experimental data, which indicate that adsorption of heavy metal ions on to SB and SF were favorable. (macrothink.org)
  • The WTR nanoparticles demonstrated high removal efficiency for Cd from aqueous solution as the adsorption capacities of nWTR were 17 and 10 times higher than those of bulk WTR in single- and multielement systems, respectively. (hindawi.com)
  • From the results we can see that the adsorption capacities of Cd(II), Pb(II), and Cu(II) increase with increasing pH of the solution. (iwaponline.com)
  • Batch adsorption studies were carried out to estimate the adsorption capacities of two different soil mixtures namely Sand- Bentonite (SB) and Sand Fly ash (SF). (macrothink.org)
  • 6 ] reported metal sorption onto biomasses to have substantial capacities for metal ions removal from aqueous media with good recoveries and regeneration of biosorbents in noncompetitive media. (hindawi.com)
  • The negative values of standard Gibbs free energy and the positive values of standard entropy confirmed that the adsorption process is spontaneous and feasible, respectively. (nsmsi.ir)
  • Crini, G. (2008) Application of Chitosan, a Natural Aminopolysaccharide, for Dye Removal from Aqueous Solutions by Adsorption Processes Using Batch Studies: A Review of Recent Literature. (scirp.org)
  • This paper reports the results of the adsorption performance of Cu(II) removal from aqueous solutions by an impregnated resin, polysulfone microcapsules (PS) containing di-2-ethylhexyl phosphoric acid (D2EHPA). (upt.ro)
  • Removal of Ca(II) and Mg(II) from aqueous single metal solutions by mercerized cellulose and mercerized sugarcane bagasse grafted with EDTA dianhydride (EDTAD). (ufop.br)
  • Carboxylated chitosan (CKCTS) was prepared for the removal of Cd(II), Pb(II), and Cu(II) from aqueous solutions. (iwaponline.com)
  • It also showed that carboxylate groups play a significant role in absorbing copper cations from aqueous solutions. (nsmsi.ir)
  • This study aimed to investigate and explore the possibility of using eggshell powder (ES) and natural hydroxyapatite (HAp) derived from chicken bone for adsorption of Sr(II) ions from aqueous solutions. (scialert.net)
  • The Sr(II) removal from aqueous solutions by natural calcium based materials were studied in a batch mode. (scialert.net)
  • The natural calcium based adsorbents seems to be a suitable low-cost material for removing strontium ions from aqueous solutions. (scialert.net)
  • Among various treatment methods adsorption process is one of the most effective and economically feasible alternative methods used to remove metal ions from waste solutions. (scialert.net)
  • In order to remove Sr ions from aqueous solutions, organic and inorganic adsorbents have been widely employed 4 - 10 . (scialert.net)
  • In the literature it can be found, there are few studies relating to removal of strontium from aqueous solutions using bone ash 18 and eggshell powder 19 . (scialert.net)
  • These studies are limited in the literature although there is no study about the artificial neural networks was used for modeling of adsorption of Sr(II) from aqueous solutions by eggshell and bone ash. (scialert.net)
  • In this study, particles produced from a blend between sericin, alginate and Poly(ethylene glycol) diglycidyl ether (PEG) were used to remove toxic and precious metals from aqueous solutions. (cetjournal.it)
  • The blends were dripped in aqueous and alcoholic (ethanol) solutions of CaCl 2 and Ca(NO 3 ) 2 , and then the particles were dried at 100 °C. The simulation of speciation diagrams as functions of pH was performed using Hydra/Medusa software in order to establish the pH to be used in the experiments. (cetjournal.it)
  • Impact of surface modification of activated carbon on BTEX removal from aqueous solutions: a review. (ac.ir)
  • A study of the removal of Cd +2 , Zn +2 , Pb +2 y Cu +2 ions from aqueous solutions was made, studying several variables that affect the process. (csic.es)
  • In the present work, the abilities of natural and synthetic samples of goethite and hematite to remove copper Cu(II) ) and zinc Zn(II) ions from aqueous solutions were compared. (arhivzatehnickenauke.com)
  • Bojić, V.B. Veljković, Ultrasound-assisted adsorption of 4-dodecylbenzene sulfonate from aqueous solutions by corn cob activated carbon, Ultrasonics Sonochemistry, 20(3) (2013) 955-962. (ac.rs)
  • The MOF is stable in organic solvents, in hot water, and in both acidic and basic aqueous solutions. (oregonstate.edu)
  • Removal of tetracycline from aqueous solutions using polyvinylpyrrolidone (PVP-K30) modified nanoscale zero valent iron. (ac.ir)
  • Chitosan synthesized locally with a degree of deacetylation 71% and chitosan with a degree of deacetylation 68% from Sigma Aldrich were used to investigate adsorption of Cu 2+ ion in aqueous solution. (scirp.org)
  • Wan, M.W., Kan, C.C., Rogel, B.D. and Dalida, M.L.P. (2010) Adsorption of Copper (II) and Lead (II) Ions from Aqueous Solution on Chitosan-Coated Sand. (scirp.org)
  • Adsorption potentials of melon husk for the removal of copper (II) ions from aqueous solution in a fixed bed column was investigated. (rjees.com)
  • The material showed good adsorption performance in the removal process of Cu(II) ions from aqueous solution. (upt.ro)
  • Maximum adsorption capacity, q e according to Thomas model, was 30.09 mg·g -1 obtained at 20 ml/min, flow rate, 30 mg·L -1 metal solution, and 15 cm bed height. (vilniustech.lt)
  • Selective adsorption and recycle of Cu2+ from aqueous solution by modified sugarcane bagasse under dynamic condition. (vilniustech.lt)
  • Optimization of cellulose and sugarcane bagasse oxidation : application for adsorptive removal of crystal violet and auramine-O from aqueous solution. (ufop.br)
  • Oxidized renewable materials for the removal of cobalt(II) and copper(II) from aqueous solution using in batch and fixed-bed column adsorption. (ufop.br)
  • lt;em>aqueous solution. (nsmsi.ir)
  • The artificial neural networks (ANN) are carried out for prediction of adsorption efficiency for the removal of Sr(II) ions from aqueous solution by eggshell (ES) and bone ash-hydroxyapatite (BA-HAp). (scialert.net)
  • In this diploma thesis, the equilibrium adsorption of heavy metal ions (cobalt or copper) from the corresponding aqueous solution on the spent coffee ground was investigated. (ktf-split.hr)
  • The result demonstrated that the prepared activated carbon was suitable for removal of Pb 2+ from synthetic aqueous solution using batch, as well as fixed bed sorption systems. (ncsu.edu)
  • The present study aims to removal of copper ions (Cu2+) as a heavy metal ion from aqueous solution by a high inorganic molecular weight compound. (riejournal.com)
  • A nanomaterial, a copper-based metal organic framework (Cu-BTC MOF), was prepared by a one-step solvothermal synthesis method and applied for the removal of Pb(II) ions from an aqueous solution via adsorption. (mysciencework.com)
  • Removal of tetracycline from aqueous solution using Fe-doped zeolite. (irost.ir)
  • Measurements of photodegradation of picloram in aqueous solution showed that occurs a reduction of 50% of the electronic band of optic absorption at 224 nm, associated with pyridyl ring of the herbicide, after 30 minutes of exposure to Hg lamp of 100 watts. (usp.br)
  • In this study, Saccharum bengalense(SB) was used as biosorbent for the removal of Mn (II) ions from aqueous solution. (ac.ir)
  • Studies showed that by increasing pH of the solution, metal removing efficiency of Saccharum bengalensefrom the aqueous environment was enhanced but to a specific extent, pH 5.0, at time 50minutes and dose 0.1g/50mL. (ac.ir)
  • At 313K temperature, adsorption capacity (q e ) of Saccharum bengalense for removal of Mn (II) ions from aqueous solution was 21.72mg/g. (ac.ir)
  • In this study, the capacity of untreated and treated Sugarcane Bagasse by hydrochloric acid or caustic soda on the elimination of heavy metal Copper and Nickel from aqueous solution was investigated. (isca.me)
  • Mohamed Chiban et Fouad Sinan, Removal of Cu(II) ions from aqueous solution by micro-particles of dried Carpobrotus edulis plant in a column system,Wat. (isca.me)
  • Malarvizhi T.S., Santhi T. and Manonmani S, A Comparative Study of Modified Lignite Fly Ash for the Adsorption of Nickel from Aqueous Solution by Column and Batch Mode Study, Res. (isca.me)
  • Olayinka O. K., Oyedeji O.A. and Oyeyiola O.A., Removal of chromium and nickel ions from aqueous solution by adsorption on modified coconut husk, Afr.J. Env. (isca.me)
  • such as contact time, adsorption dosage, pH of the solution, temperature and initial Adsorption Processes for Water Treatment and Purification - Kindle edition by Bonilla-Petriciolet, Adrián, Mendoza-Castillo, Didilia Ileana, Reynel-Ávila, Hilda Elizabeth. (westflo.org)
  • Adsorptive removal of cationic and anionic dyes from aqueous solution by utilizing almond shell as bioadsorbent. (ac.ir)
  • Zeng, X.F. and Ruckenstein, E. (1996) Supported Chitosan-Dye Affinity Membranes and Their Protein Adsorption. (scirp.org)
  • Studies of protein adsorption on reversed-phase and ion exchange stationary phases demonstrated an increase in retention with increasing pressure, which is interpreted as a standard partial molar volume decrease during the transition of the protein from a mobile to a stationary phase. (mysciencework.com)
  • A study is made of the removal of metals present in aqueous effluents using a residue of the steelmaking industry denominated rolling mill scale. (csic.es)
  • This study aims at characterizing the pine bark surface structurally and chemically, to understand the nature of sorption occurring when a trace organic contaminant is present in aqueous effluents. (deepdyve.com)
  • McKay, G., Blair, H.S. and Findon, A. (1989) Equilibrium Studies for the Sorption of Metal Ions onto Chitosan. (scirp.org)
  • Sag, Y. and Aktay, Y. (2002) A Comparative Study for the Sorption of Cu(II) Ions by Chitin and Chitosan: Application of Equilibrium and Mass Transfer Models. (scirp.org)
  • Competitive and Noncompetitive Batch Sorption Studies of Aqueous Cd(II) and Pb(II) Uptake onto Coffea canephora Husks, Cyperus papyrus Stems, and Musa spp. (hindawi.com)
  • Biomass constituent ions showed no interference effects whereas cation exchange capacity values corresponded to the sorption efficiencies. (hindawi.com)
  • The maximum sorption efficiency ranges for metal ions in noncompetitive media were 95.2-98.7% for C. canephora , 42.0-91.3% for C. papyrus, and 79.9-92.2% for Musa spp. (hindawi.com)
  • In competitive sorption synergistic effects were higher for Cd 2+ than Pb 2+ ions. (hindawi.com)
  • Sorption techniques that have been studied using biosorbents are ultimately meant for decontamination of polluted natural water in which toxic trace metal ions exist in association with inorganic and organic species which show synergistic effects on each other during sorption processes. (hindawi.com)
  • The presence of metallic contaminants in aqueous effluents emanating from different industries is currently one of the most crucial environmental issues being scrutinized. (ncsu.edu)
  • Activated carbon has been used for most applications aiming at the reduction of these kind of compounds in aqueous effluents, but regeneration needs and high operation costs led to a renewed interest in the search for alternative sorbents. (deepdyve.com)
  • J-F. Fiset, J-F Blais, R.Ben Cheik and R. Dayal Tyagi, Review of metal removal from effluents by adsorption on sawdusts and wood bark, J. wat. (isca.me)
  • Additionally, cysteine amino acid was used to modify the activated carbon surface, leading to an enhancement in adsorption ability because of having a nitrogen group. (ac.ir)
  • The effects of ultrasound (US) on the adsorption process of Cu(II) on granulated activated carbon (GAC), produced by walnut shells, was studied in this paper. (ac.rs)
  • D.D. Milenković, P.V. Dašić, V.B. Veljković, Ultrasound-assisted adsorption of Cu(II) ions on hazelnut shell activated carbon, Ultrasonics Sonochemistry 16 (4) (2009) 557-563. (ac.rs)
  • Modeling studies for adsorption of phenol and co-pollutants onto granular activated carbon prepared from olive oil industrial waste. (irost.ir)
  • Onundi Y.B., Mamun A.A., Al Khatib M.F. and Ahmed Y.M., Adsorption of copper, nickel and lead ions from synthetic semiconductor industrial wastewater by palm shell activated carbon, Int. J. Env. (isca.me)
  • Theoretical modelling was used to gain insight into the mechanism of adsorption.Acknowledgment: Financial support from European Commission under EU FP7, NMP4-SL-2012-280519, NanoSelect is gratefully acknowledged. (diva-portal.org)
  • The mechanism of adsorption is also highly complex and difficult to model and simulate using conventional mathematical modelling due to the interaction of more number of adsorption process variables 11 . (scialert.net)
  • These results showed the formation of complexes between metallic ions Fe (III) and Cu(II) with picloram confirming that this reaction can be an effective mechanism of herbicide adsorption to soil. (usp.br)
  • Also the optimization and the analysis of the dye adsorption mechanism are performed using the response surface methodology, molecular modeling, and experimental studies. (ac.ir)
  • The assessment of the adsorption mechanism process by the different methods confirms the dominance of the physical adsorption process and a minor effect of the chemical adsorption. (ac.ir)
  • Carboxymethyl-β-cyclodextrin conjugated magnetic nanoparticles as nano-adsorbents for removal of copper ions: synthesis and adsorption studies. (irost.ir)
  • The maximum adsorption capacity (349.37 mg/g) was observed for LC@PEI-65 at 45°C and pH 4. (eeer.org)
  • Biosorption of nickel(II) and copper(II) ions in batch and fixed-bed columns by free and immobilized marine algae Sargassum sp. (vilniustech.lt)
  • In addition, ANN model is an effective technique in modeling, estimation and prediction of adsorption process for Sr(II) ions onto ES and BA-HAp. (scialert.net)
  • The ANN is one of the data based non-traditional tools for modeling of the adsorption process. (scialert.net)
  • 2011). Different metals such as lead (Pb), copper (Cu), manganese (Mn), mercury (Hg), arsenic (As), and zinc (Zn), among others, are known to be highly toxic (Ahluwalia and Goyal 2007). (ncsu.edu)
  • Patil Kishor P., Patil Vilas S., Nilesh Patil and Motiraya Vijay, Adsorption of Copper and Zinc Metal Ion from Waste Water by Using oybean Hulls and Sugarcane Bagasse as dsorbent, Int. J. Sci. (isca.me)
  • Herrera I., Gardea Torresdey J.L., Tiemann K.J., Peralta Videa J.R., Armendariz V. and Parsons J.G.,Binding of silver(I) ions by alfalfa biomass (medicago sativa), batch pH, time, temperature and ionic strength studies, J. Hazard. (isca.me)
  • The nature and amount of surface groups are found to significantly impact the functionality of cellulose nanocrystals and the adsorption efficiency. (diva-portal.org)
  • Batch adsorption experiments were performed in order to evaluate the removal efficiency of iron oxide samples. (arhivzatehnickenauke.com)
  • The MOF can pull butanol from the fermentation broth, via adsorption, with greater efficiency than distillation or any other existing method. (oregonstate.edu)
  • The adsorption performance of the studied material was evaluated studying the effects of two physico-chemical parameters: contact time and Cu(II) initial concentration. (upt.ro)
  • The effects of experimental parameters such as pH value, initial concentration, contact time and temperature on the adsorption were studied. (iwaponline.com)
  • For the copper (II) ion the spectroscopic parameters indicated a complex with rhombic symmetry, very stable in the range of pH's from 2,00 to 7,00 with at least of two picloram molecules. (usp.br)
  • The response surface optimization results demonstrate that the parameters affecting on the dye adsorption process are somewhat similar in all the three types of clays, and any difference in the impacts of the different parameters involved depends on the different structures of these three types of clays. (ac.ir)
  • Photopotential in nano-size Ag(I) oxide films anodically formed on polycrystalline silver is independent of the OH - ion concentration, which means that a photoresponse is generated in the bulk oxide. (m-protect.ru)
  • The effect of initial metal ion concentration, initial pH and. (arhivzatehnickenauke.com)
  • These results may be due to the high initial copper concentration used in this work and low dosage of the compound. (riejournal.com)
  • The increase of specific surface and initial concentration increase the efficacy of adsorption. (ac.rs)
  • Similarly at different initial concentration 20% sand bentonite mixture sorbs the higher amount of copper whereas 10% sand bentonite mixture sorbs the higher amount of iron. (macrothink.org)
  • In this study, novel water treatment residuals nanoparticles (nWTRs) were prepared using high energy ball milling and used for efficient removal of Cd(II) in single- and multi-ion systems. (hindawi.com)
  • The greater adsorption capacity of water treatment residuals nanoparticles (nWTRs) in comparison with larger particles suggests their use as a very promising candidate for contaminated water and wastewater remediation. (hindawi.com)
  • To explore cheap, easily available and high adsorption performance bioadsorbent is still an important task for azo dye pollution control. (eeer.org)
  • Although existing conventional remediation techniques have been employed to remove metal ions, reversing freshwater quality to pristine and usable conditions when it deteriorates remains an intricate challenge. (hindawi.com)
  • Removal of heavy metals from aqueous media by biosorption. (ac.ir)
  • 6 Removal of Antibiotics from Water by Adsorption/Biosorption This recently introduced group is produced with incorporation of appropriately identified transition metal/metals into the naturally available magnetite with simple synthesis method. (westflo.org)
  • The main aim of the present work has been to understand the retention behavior of metal ions of copper and iron by mixtures of sand bentonite and sand fly ash in the context of their use as liners for waste disposal facilities. (macrothink.org)
  • In their reports, Namasivayam and Ranganathan [ 3 ] and Volesky [ 4 ] have discussed several conventional techniques of removal of metal ions from the water environment including chemical precipitation, adsorption, evaporation, electrochemical treatment, solvent extraction, membrane separation, reverse osmosis, and ion exchange. (hindawi.com)
  • Fourier transmission infrared (FTIR) analyses suggested the participation of OH − , O-Al-O, FeOH, and FeOOH entities in the adsorption process. (hindawi.com)
  • It was hypothised that the electrostatic interactions between the negatively charged nanocrystals and positively charged metal ions drives the adsoprtion process. (diva-portal.org)
  • Based on the values of entropy changes (ΔS) (50.04 J/mol k), the enthalpy changes (ΔH) (9.26 kJ/mol), and the negative Gibbs free energy changes (ΔG), the adsorption process was endothermic, random, and spontaneous. (researchsquare.com)
  • The present study adsorption process was carried through a fixed bed column to find out the breakthrough characteristics. (vilniustech.lt)
  • The adsorption was an exothermic process. (iwaponline.com)
  • transform before and after the adsorption process proved the contribution of clay and monomer of itaconic acid to the composite hydrogel. (nsmsi.ir)
  • The removal of copper occurs through a process of oxidation-reduction or cementation (Cu +2 /Fe 0 ). (csic.es)
  • Adsorption Processes for Water Treatment and Purification: Bonilla-Petriciolet, Adrián, Mendoza-Castillo, Didilia Ileana, Reynel-Ávila, Hilda Elizabeth: 9783319581354: Books - Amazon.ca The analysis is structured in a way that allows reviewing and discussing the main stages of process development. (westflo.org)
  • Therefore, the adsorption process intensification is fundamental to face. (westflo.org)
  • This indicated that the adsorption process of the ACS with respect to Cr(VI) was mainly via single molecular layer adsorption and chemisorption. (westflo.org)
  • Adsorption and photocatalytic decomposition of methylene blue on mesoporous metallosilicates. (irost.ir)
  • The results of these achievements confirm that the number of acceptor hydrogen bonds around the clays influence the adsorption capacity of methylene blue. (ac.ir)
  • Experimental results indicated that adsorption of Sr(II) was highly pH dependent and strontium removal at relatively high at pH 5 for BA-HAp and pH 6 for ES. (scialert.net)
  • The main form of Cd in contaminated water is Cd(II) and the remediation technologies available to reduce Cd concentrations in contaminated water systems include ion-exchange, solvent extraction, chemical precipitation, phytoextraction, ultrafiltration, reverse osmosis, electrodialysis, and adsorption [ 3 - 6 ]. (hindawi.com)
  • Characterization and adsorption tests suggested electrostatic interaction played a key role in MO removal, accompanied by intermolecular hydrogen bond, π-π dispersion interaction and pore filling collectively. (eeer.org)
  • 2000). A new class of hybrid mesoporous materials with functionalized organic monolayers for selective adsorption of heavy metal ions. (irost.ir)
  • Hence the need for a separation tool that can work well in an aqueous environment and also in the presence of organic solvents, in this case acetone, which is a key ingredient in products like nail polish remover and paint thinner. (oregonstate.edu)
  • Stylianou and colleagues at universities in Switzerland, China, the United Kingdom and Spain synthesized a novel metal organic framework, based on copper ions and carborane-carboxylate ligands, known as m CB-MOF-1. (oregonstate.edu)
  • Part I: Batch adsorption study. (ufop.br)
  • In this study, the Methyl orange (MO) adsorption capacity by a novel bioadsorbent obtained from lychee and longan pericarps via simple modification was investigated. (eeer.org)
  • In this work spectroscopic techniques as Electronic Paramagnetic Resonance (E.P.R.) was used to study the formation of possible complexes between the picloram (4 Amino-3,5,6-trichloropicolinic acid) herbicide and metallic ions presents in soils, such as iron, copper and manganese. (usp.br)
  • The adsorption experiments were carried out following batch equilibrium techniques. (upt.ro)
  • Adsorption experiments were carried out in a batch mode with varying pHs, MgO concentrations, initial dye concentrations, contact times, and temperatures. (ac.ir)
  • Aquatic ecosystems contamination especially with heavy metal ions is an environmental problem worldwide. (hindawi.com)
  • Removal and Preconcentration of Pb (II) Heavy Metal Ion from Water and Waste-Water Samples onto Poly (vinyl alcohol)/polyethyleneimine/Fe3O4 Microfibers Nanocomposite. (ac.ir)
  • Zeta sizer studies showed very negatively charged surface for all the nanocrystals at neutral pH conditions.The adsorptions of silver, copper and iron ions onto the differents CNCs were evaluated using ICP-OES (inductively coupled plasma- optical emission spectrometry) and EDS (energy dispersive spectroscopy). (diva-portal.org)