Methods include adsorption. Medical search. Frequent questions

compared with the Freundlich isotherm adsorption model and Temkin model, the Langmuir model has the best fitting effect, R 2 = 0.9903. (iwaponline.com)
Adsorptive removal of phenol and aniline by modified bentonite: Adsorption isotherm and kinetic study. (ugm.ac.id)
The preparation and characterization of these materials uses a range of electrochemical techniques and other analytical methods including gas adsorption isotherm analysis for determination of pore size, distribution, and surface area, and thermogravimetric analysis (TGA) for analysis of surface loading. (umsl.edu)
The adsorption process follows the Langmuir adsorption isotherm model with a second-order of adsorption rate, the calculated qe values (2.675, 15.252, 20.856 mg/g) were close to the experimental qe values (2.133, 13.91, 18.786 mg/g) for the three polymers Cell-AA, Cell-β-AG and Cell-β-AN, respectively. (biomedcentral.com)

The adsorption isotherms data were analyzed using Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich models. (hindawi.com)
The Langmuir model was found to provide the best fit, and the calculated adsorption capacity was 151.35 mg/g. (hindawi.com)
The adsorption data fits the quasi-second-order kinetics and the Langmuir adsorption model. (researchsquare.com)

The elevated temperature shifts the adsorption equilibrium resulting in contaminant desorption and regeneration of the adsorbent bed. (processengr.com)
Among them, the inorganic ion exchange adsorbent has better mechanical properties, the ion exchange position is more uniform, and the adsorption selectivity for metal ions is high. (iwaponline.com)
By carefully controlling the surface and pore structures, a team from Oak Ridge National Laboratory and the University of Tennessee has now been able to significantly increase both the rate and capacity of adsorption of a new polymer adsorbent. (chemistryviews.org)
Experiments showed that the adsorption capacity of the new adsorbent is strongly dependent on the density of amidoxime groups-a parameter that can be tailored by means of the pore size and the number of accessible chloride species in the original nanoporous framework. (chemistryviews.org)
An adsorbent ZO (oxidized ZIF-8-derived carbon) was prepared on the ZIF-8-derived carbon (ZC) by Hummer's method. (researchsquare.com)
that for 1:2 ZO is adsorbent dosage of 15 mg, adsorption time of 18 h, initial Pb 2+ concentration of 15 mg/L, and pH = 4. (researchsquare.com)
The effects of adsorption time, pH, adsorbent dose, and initial concentration on the removal of Pb 2+ were studied, and the optimal parameters for material removal of Pb 2+ were determined. (researchsquare.com)
The current research paper focuses on studying the adsorption behavior of aniline and parachloro-aniline using a graphite-based adsorbent, namely, Nyex-1000, and the subsequent regeneration of the adsorbent. (ugm.ac.id)
Adsorption isotherms, kinetics, and used adsorbent regeneration were also investigated. (ugm.ac.id)
The adsorption efficiency of the three polymers toward Pb(II) and various toxic metal ions present in sewage was evaluated as a function of adsorbent dose, time, temperature, pH value, and initial ion concentration to determine optimum adsorption conditions. (biomedcentral.com)

The University of Antwerp, represented by the Laboratory of Adsorption and Catalysis within the Department of Chemistry, is one of the founding members. (uantwerpen.be)
Such materials find application in several industrial fields, and are especially important in adsorption and catalysis. (aiche.org)
Available projects also include computational investigations of reaction mechanisms and reaction dynamics for solar energy conversion and catalysis/photocatalysis. (lu.se)

This book covers theoretical aspects of adsorption, followed by an introduction to molecular simulations and other numerical techniques that have become extremely useful as an engineering tool in recent times to understand the interplay of different mechanistic steps of adsorption. (routledge.com)
Part 2 of this blog topic continues the discussion from last month of some important aspects of adsorption on activated carbon in the process industries and both parts are intended to serve as an introduction to the topic. (processengr.com)

Adsorption and thermal desorption should be considered as separate events with separate time scales. (rsc.org)
For this method, desorption takes place at a temperature much higher than adsorption. (processengr.com)
In this process, desorption occurs at a pressure much lower than adsorption. (processengr.com)
A purge step can also be utilized to increase contaminant recovery during this method of desorption. (processengr.com)
The adsorption-desorption process was performed for five successive cycles. (aaqr.org)
In all these applications knowing the structure of the carbon, both in the pristine state and under operation, usually involving adsorption/desorption of species, is key to understanding and predicting the performance of the process. (cecam.org)
The accurate characterisation of microporous carbons and their evolution upon adsorption/desorption presents a number of challenges associated with the disordered nature of these materials and the multiphysics, and often multi-scale, character of the processes at play. (cecam.org)

Besides, the removal mechanisms of Cu(II) were explored by initial pH effects, adsorption isotherms and kinetic studies. (hindawi.com)
Adsorption isotherms measured using small molecules such as argon, nitrogen or carbon dioxide, are usually exploited to determine the pore size distributions of the porous materials. (cecam.org)

1.1 This test method covers the determination of the total surface area by the Brunauer, Emmett, and Teller (B.E.T. NSA) theory of multilayer gas adsorption behavior using multipoint determinations and the external surface area based on the statistical thickness surface area method. (astm.org)

3. Atomistic and Experimental Modeling for Adsorption of Metal Ions With Carbon Nanotubes in Aqueous Environment. (routledge.com)
His research interests are the development of carbon-based materials, especially carbon nanofibers and nanoparticles in adsorption, catalytic reactions, biomedical, drug delivery, sensors, microbial fuel cells and agricultural applications. (routledge.com)
Biogas is competitive, viable, and generally a sustainable energy resource due to abundant supply of cheap feedstocks and availability of a wide range of biogas applications in heating, power generation, fuel, and raw materials for further processing and production of sustainable chemicals including hydrogen, and carbon dioxide and biofuels. (hindawi.com)
A new, highly quantitative NMR technique was found to estimate greater proportions of two common carbon forms than did the old method. (usda.gov)
A second new NMR technique was used to identify the chemical processes responsible for inaccurate estimates of carbon proportions by the older method. (usda.gov)
In this study, ZIF-8-derived carbon was oxidized by Hummer's method used to adsorb Pb 2+ in aqueous solution. (researchsquare.com)
Gold, silver and other precious metals are easily recovered from the HM x-leach solution using a number of proven methods including electrowinning, carbon adsorption and precipitation. (canadianminingjournal.com)
The adsorption method mainly focuses on activated carbon as the adsorbents. (biomedcentral.com)

Among numerous treatment processes, activated carbons (ACs) adsorption is widely used because of its simple design, easy accessibility, and high efficiency [ 14 ]. (hindawi.com)
However, the Pb 2+ adsorption by ZIF-8-derived carbons has been rarely investigated. (researchsquare.com)
Microporous carbons are an important class of materials, present as natural or artificial compounds in many industrial and technological applications including hydrocarbon recovery, gas storage, water purification and energy storage. (cecam.org)
Common ways to characterise porous carbons include gas adsorption and X-ray diffraction. (cecam.org)
Advances in interaction potentials [17], including machine learning based force fields [18], are crucial in making a range of atomistic structures available, corresponding to carbons synthesised using various conditions, and opening new avenues of research. (cecam.org)

However, wastewater treatment needs adsorption and advanced oxidation of the different types of contaminants by the advanced materials. (benthamscience.com)
Development of graphitic adsorbents for wastewater treatment by adsorption and electrochemical regeneration. (ugm.ac.id)

The bioanalytical application of these materials is pursued using primarily electrochemical methods such as impedance spectroscopy and cyclic voltammetry. (umsl.edu)

The competitive adsorption results show that 1:1 ZO and 1:2 ZO have a superior selectivity for Pb 2+ competing with Cu 2+ and Fe 2+ .This study shows 1:2 ZO is more helpful for the removal of Pb 2+ than 1:1 ZO. (researchsquare.com)

He examines these using a variety of computational approaches, including quantum chemical calculations, classical and ab initio molecular dynamics simulations, with a strong connection to experimental characterization methods, such as nonlinear vibrational spectroscopy, X-ray, and neutron scattering. (ornl.gov)
Today, spectroscopic methods have attracted the attention of many researchers and industrialists for the identification and characterization of materials due to their many advantages over other analysis methods. (magiran.com)

The nucleic acid-based technique has been widely utilized in many fields including for on-site detection. (frontiersin.org)
Computational methods are used widely in the field of materials physics. (helsinki.fi)

The effects of surface modification of silica nanoparticles in protein-repellent and antibacterial activity and mechanical properties of dental composites including flexural strength, flexural modulus, and hardness were discussed. (bvsalud.org)
METHODS: The surface of silica nanoparticles was first chemically treated with 3-methacryloxypropyltrimethoxysilane (MPS) as a coupling agent and then with poly(ethylene glycol) (PEG) bonded to MPS. (bvsalud.org)
RESULTS: The dental composite containing 20 wt% PMS nanoparticles could reduce the protein adsorption by 28 % as compared with a composite containing 20 wt% MPS-modified silica. (bvsalud.org)
In the second part of my thesis, the structure of lipid nanoparticles (LNPs) for NA delivery was investigated using scattering methods and cryogenic transmission electron microscopy (cryoTEM). (lu.se)

The method can be used to produce a wide variety of polymer nanocomposites for applications including the removal of heavy-metal ions from solutions or novel catalysts. (chemistryviews.org)
The efficacy of adsorption was quantitative for metal ions present in a real sample of wastewater and the efficiency didn't drop even after 7 cycles of use. (biomedcentral.com)

Adsorption kinetic studies under optimum conditions revealed that the adsorption of both benzene and anthracene followed Pseudo-second order kinetics. (bvsalud.org)

Among biomolecules , protein adsorption to surfaces poses a unique challenge, apparent through the plethora of attention in the literature [ 13 - 18 ]. (omicsonline.org)
A straightforward way to control protein surface adsorption is to use buffers at pH extremes, to either operate above the isoelectric point of proteins, or suppress ionization of silanol groups at the channel walls [ 10 , 21 ]. (omicsonline.org)
Common applications include cell lysis, solubilization of membrane proteins and lipids, protein crystallization, and reduction of background staining in blotting experiments. (sigmaaldrich.com)
8 If the adsorption of the protein to the resin is of concern, the resin can be included in a dialysis buffer and the protein dialyzed. (sigmaaldrich.com)
The so called ELISA test was used to assess protein adsorption from single protein solution (FN, γ-globulin, HSA) and PPP solution. (ncl.edu.tw)
The lectures give insight in the research frontier and provide a theoretical background on experimental methods used for protein purification and investigations of protein properties/function and dynamics. (lu.se)
These methods are e.g. preparative methods, protein purification by ion- exchange/adsorption/affinity chromatography, criteria for purity, SDS-PAGE, iso- electric focusing, 2D electrophoresis, mass spectrometry, methods to study protein interactions, analysis of post-translational modifications, spectroscopy to analyse the dynamics and secondary structure of proteins and bioinformatics. (lu.se)
The student is trained in the use of important methods within protein purification and characterisation, including methods used for the study of properties and function and structural dynamics. (lu.se)
The lectures cover the theoretical and practical background for general studies within protein chemistry, including the methods experienced in the laboratory. (lu.se)

The present work deals with the preparation of ultrafiltration (UF) and microfiltration (MF) membranes with enhanced fouling resistant ability by using two different methods, liquid- induced phase separation (LIPS) and vapor-induced phase separation (VIPS), after in-situ modification of the PVDF solution using amphiphilic PS-b-PEGMA block copolymers as additive. (ncl.edu.tw)

Because of its excellent surface properties, which include excellent thermal stability and adsorption performance as well as surface activity, it can be used for catalysts as well as catalyst carriers for chemical reactions. (mis-asia.com)

Major uses for this process include purification and feed systems where contaminants are present at high concentration (bulk separations). (processengr.com)
His current research interests include ion binding and recognition in solution and solid state, adsorption at mineral surfaces, heavy elements separations, molten salt chemistry, and materials for energy applications. (ornl.gov)

4. Water and Aqueous Phase Adsorption in Metal-Organic Frameworks: From Experiments to Simulations. (routledge.com)
Techniques for extraction of organic compounds from environmental media or biological samples include absorption onto a polymer and extraction with an organic solvent. (cdc.gov)
A semi‒pilot-scale adsorption reactor was fabricated to remove a volatile organic compound (VOC) gases mixture (BTEX). (aaqr.org)
Soil organic matter plays a central role in several soil processes, including nutrient cycling, water retention, soil structure, and chemical adsorption. (usda.gov)
Recent improvements have made nuclear magnetic resonance (NMR) spectroscopy a prime method for studying organic matter chemistry. (usda.gov)
Results provide a process-level explanation for inaccuracies with the older method and illustrate the significance of using newer techniques when studying the chemical nature of soil organic matter. (usda.gov)
The list of advanced materials includes many organic/inorganic and natural/synthetic platforms with desired properties. (benthamscience.com)
Adsorption and Oxidation Techniques to Remove Organic Pollutants from Water. (ugm.ac.id)
Create a large school of organic chemists, which includes L. N. Nesmeyanov, B. A. Kazan, A. A. Balandin, H. I. Shuykin, A. F. Plate etc. (rin.ru)
Currently available projects include computational investigations of functional materials in a broad sense, including organic molecules, transition metal complexes and polymeric systems, nanostructured inorganic materials, as well as surfaces and interfaces. (lu.se)

Batch adsorption studies revealed that the maximum degradation achieved at optimum nano-composite concentration of 10 µg/mL, pH value of 5, PAHs concentration of 2 µg/mL and effective irradiation source being UV radiations in the case of both benzene and anthracene pollutants. (bvsalud.org)

Dr. Singh 's current research interest is in material modeling, self assembly, energy storage, wetting transition, nanotribology and selective adsorption. (routledge.com)

A separation step (e.g., distillation) to purify the product during adsorption and another one to recover the purge fluid may be required. (processengr.com)
When developing an HPLC method, the first step is always to consult the literature to ascertain whether the separation has been previously performed and if so, under what conditions - this will save time doing unnecessary experimental work. (pharmtech.com)
A method for esters of amino acids from their mixtures, formed by the hydrolysis of proteins, as well as methods of separation of reaction products. (rin.ru)

The adsorption of cesium ions in aqueous solution by TNS was investigated in this study. (iwaponline.com)

Hydrophobic interactions can cause biomolecules to aggregate, and also play a major role in biomolecular adsorption from water onto hydrophobic surfaces [ 11 , 12 ]. (omicsonline.org)
The work includes the development of theoretical and computational techniques for multiscale modeling, and applications of these methods to study a variety of biomolecular systems over a multitude of scales. (helsinki.fi)

Examples of research topics include biomembranes, membrane proteins, sugars, and DNA, and the interactions of these molecular complexes with drugs and other signaling molecules. (helsinki.fi)
Coverage includes membrane reactors and catalytic design (catalytic membrane reactors). (lu.se)

Water treatment alternatives such as adsorption using agricultural residues are currently being studied to eliminate pollutants that cause eutrophication in water bodies, avoiding the alteration of aquatic ecosystems. (mdpi.com)

The purpose of this chapter is to describe the analytical methods that are available for detecting and/or measuring and monitoring 2,3-benzofuran in environmental media and in biological samples. (cdc.gov)
Methods for detection of 2,3-benzofuran in biological.materials are summarized in Table 6-1. (cdc.gov)
To confirm this popular use, ethanol extract from leaves of G. globosa L. was prepared by maceration and analyzed by some phytochemical and biological assays, including cardiovascular activity. (researchgate.net)

The pH of optimum adsorption was determined as 5. (hindawi.com)

To remove the purged fluid during the next adsorption cycle, the contaminant in the feed must be more selectively adsorbed than the displacement purge fluid. (processengr.com)

6. Lattice-Boltzmann Modeling of Adsorption Breakthrough in Packed Beds. (routledge.com)
The group of computational physics has in its use methods covering many time and length scales, starting from quantum mechanical calculations at atomic level and picosecond time scales and up to continuum modeling of materials and macroscopic times scales. (helsinki.fi)

As more research focuses on medical and diagnostic applications involving micro- and nanofluidic devices, the issue of non-specific adsorption of biomolecules at the channel surface is gaining increasing attention [ 5 - 7 ]. (omicsonline.org)
Encapsulation in self-assembled lipid structures has been shown to increase the stability of large biomolecules, including proteins and nucleic acids (NAs), which has many potential applications in the food and pharmaceutical industries. (lu.se)

Properties and synthesis methods. (globenewswire.com)
With the latest synthesis and functionalization methods, these advanced materials are becoming nanohybrid systems. (benthamscience.com)
Functional groups can be added to the porous framework through a post synthesis treatment, or included in the framework at the time of the synthesis itself. (aiche.org)
One of the disadvantages of the one-pot synthesis method is that high quality materials cannot be obtained using pure organosilica precursors, and often mixtures of pure silica and organosilica precursors are used. (aiche.org)

Because the concentration of uranyl ions in seawater is very low, adsorption agents used for this process must be particularly efficient. (chemistryviews.org)

Use this non-destructive method on most surfaces, including irregular surfaces such as air return grills. (skcinc.com)

Clark, Delphine, has differentiated two antigenic types of OMSK using agar precipitation and specific adsorption method (HI) (9). (cdc.gov)

The reduction in adsorption capacity was minimal after several adsorption and regeneration cycles. (ugm.ac.id)

The physical and chemical characteristics of the prepared PACs were investigated by BET adsorption, SEM, and FT-IR. (hindawi.com)
In this study, a rapid DNA extraction method (RDEM), recombinase aided amplification (RAA), and chemical heating packet (CHP) are integrated and termed as RRC platform for on-site detection of nucleic acid. (frontiersin.org)
Chemical methods are used to prepare Al2O3 for high purity. (mis-asia.com)

For deeper insights, Dr. Eneli Härk and her colleagues at HZB worked with small-angle X-ray scattering, a technique permitting to obtain information on various structural features on the nanometer scale including the mean pore size. (sciencedaily.com)
While these assumptions lead to relatively crude models, with in particular no consideration of the interconnectivity between pores, recent comparisons of the pore size distributions obtained with such methods to data derived from Small Angle X-ray Scattering [3] and average pore sizes determined by Nuclear Magnetic Resonance (NMR) [4] strengthens the confidence in this type of porosity characterisation. (cecam.org)

Adsorption Method for Sampling of Dioxins and Furans (AMESA) is an automatic system for continuous monitoring of emissions of dioxins and furans from industrial processes which require official approval in compliance with environmental regulations. (wikipedia.org)
Pseudo first-order model, pseudo second-order model, and intraparticle diffusion model were applied to describe the adsorption processes. (hindawi.com)
The preparation processes of PACs were primarily including carbonization and activation [ 21 ]. (hindawi.com)
Once suitable atomistic models have been generated, additional challenges come with the simulation of adsorption processes. (cecam.org)
Then the methods and processes of the production of these cylinders are reviewed. (magiran.com)

Methods for the determination of 2,3-benzofuran in environmental samples are summarized in Table 6-2. (cdc.gov)

8. Abiotic Removal with Adsorption and Photocatalytic Reaction. (routledge.com)
The following is a brief description of four commonly used methods for detergent removal that take advantage of the general properties of detergents: e.g., hydrophobicity, CMC, aggregation number, and the charge. (sigmaaldrich.com)
The removal rate and adsorption amount of Pb 2+ was measured on different molar ratio of 2-Hmim to 2, 2 '-bipyridine in ZO, including 1:1 (1:1 ZO) and 1:2 (1:2 ZO). (researchsquare.com)

Like pressure swing regeneration, this method is characterized by low capacities at high concentrations with a resulting short cycle time. (processengr.com)

The adsorption kinetic data were found to follow the pseudo second-order model. (hindawi.com)

The solution pH played a significant role in the adsorption process of Cs (I). (iwaponline.com)
In the journal Angewandte Chemie , American researchers have now introduced a process by which they can produce tailored, highly effective adsorption agents to do this job. (chemistryviews.org)
This new process puts materials with tailored adsorption and surface properties within reach. (chemistryviews.org)
Introduction: The surface of dental implants is an important factor for osseointegration process and different methods of surface treatment have been described. (bvsalud.org)

The CO2PERATE project (2.6 million euro) is funded by the Agentschap Innoveren en Ondernemen (VLAIO), and supported by Catalisti, the spearhead cluster for chemistry and plastics. (uantwerpen.be)
The course is included in the main fields of Chemistry and Molecular Biology at the Faculty of Science. (lu.se)

The adsorption of aniline and parachloro-aniline was found to be quite rapid owing to its non-porous nature. (ugm.ac.id)

The state-of-the-art research advances of OTA biodetoxification by degradation, adsorption, or enzymes are reviewed in the present paper. (frontiersin.org)
A large number of microorganisms with good OTA degradation and/or adsorption ability, as well as some OTA degradation enzymes isolated or cloned from microorganisms and animal pancreas, have great application prospects in food and feed industries. (frontiersin.org)

The intent is not to provide an exhaustive list of analytical methods that could be used to detect and quantify 2,3-benzofuran. (cdc.gov)
This article presents a simple and systematic approach to HPLC method development, beginning with sample preparation and finishing with practical analytical method validation. (pharmtech.com)
This completely new Third Edition of the Mark Encyclopedia of Polymer Science and Technology brings the state-of-the-art to the twenty-first century, with coverage of nanotechnology, new imaging and analytical techniques, new methods of controlled polymer architecture, biomimetics, and more. (lu.se)

A broad spectrum of characterisation, modification and growth methods is used for a large variety of materials. (helsinki.fi)

Heavy metals (HMS) are the most common pollutants in sewage [ 1 ], including lead (Pb), cadmium (Cd), mercury (Hg), chromium (Cr), and arsenic (As). (researchsquare.com)

With regard to amplification, polymerase chain reaction (PCR) is the most popular method. (frontiersin.org)

We developed a general framework to study the adsorption dynamics of light species on interstellar ices. (rsc.org)
We plan to use our method to study a variety of adsorbates, including radicals and charged species. (rsc.org)

The resulting ACs were used for the adsorption of Cu(II) from aqueous solutions in the batch mode and yielded a superior adsorption capacity of 139.08 mg/g. (hindawi.com)

The interior surface area of nanocarbon materials is usually investigated by adsorption of gas. (sciencedaily.com)
However, the second half includes introducing various advanced materials in the techniques mentioned above. (benthamscience.com)
Immobilization of proteins onto nanostructures of gold and other materials is pursued by adsorption or by covalent linkage to self-assembled monolayers. (umsl.edu)

A cooling step then returns the bed to its adsorption temperature. (processengr.com)
Many times this method is used in conjunction with the temperature swing and pressure swing methods. (processengr.com)

1. Theory, Molecular/Mesoscopic Simulations, and Experimental Techniques of Aqueous Phase Adsorption. (routledge.com)
An important part of the experimental studies is an ongoing improvement of methods. (lu.se)
The course covers the basics, principles and limitations for the most common methods for multivariate statistics (analysis of variance, principal component analysis and partial least squares regression), experimental design (super-saturated and factorial designs) and method validation with a focus on practical use. (lu.se)
The course is focused on experimental investigations of proteins in the form of practicals and includes a short project. (lu.se)

Some of the most popular polymeric adsorbents include clay, zeolites (aluminosilicates often used in dietary supplements), and nanometal oxides. (lakeside-equipment.com)

Evaluation of different methods to calculated reduction potentials for heme proteins. (lu.se)

Organisms2

Chemicals and Drugs42

Analytical, Diagnostic and Therapeutic Techniques and Equipment8

Phenomena and Processes12

Disciplines and Occupations1

Technology, Industry, Agriculture11

Health Care4

Isotherm4

Langmuir3

Adsorbent10

Catalysis3

Aspects of adsorption2

Desorption7

Isotherms2

Behavior1

Carbon8

Carbons5

Wastewater treatment2

Electrochemical1

Selectivity1

Characterization2

Widely2

Nanoparticles4

Metal ions2

Kinetic studies1

Protein9

Vapor1

Thermal1

Separations2

Organic10

Benzene1

Selective1

Separation3

Aqueous solution1

Biomolecular2

Membrane2

Residues1

Biological3

Optimum1

Contaminant1

Modeling2

Biomolecules2

Synthesis4

Concentration1

Surfaces1

Precipitation1

Regeneration cycles1

Chemical3

Pore size2

Processes5

Determination1

Removal3

Capacities1

Pseudo second-order1

Process4

Chemistry2

Porous1

Degradation2

Analytical3

Characterisation1

Pollutants1

Reaction1

Species2

Batch1

Materials3

Temperature2

Experimental4

Adsorbents include1

Reduction1