"Precipitation (Chemical) - an overview". ScienceDirect. Retrieved 2020-11-28. "Chemical precipitation". Encyclopedia Britannica ... In case of an inorganic chemical reaction leading to precipitation, the chemical reagent causing the solid to form is called ... The physico-chemical process underlying digestion is called Ostwald ripening. While precipitation reactions can be used for ... In metallurgy, precipitation from a solid solution is also a way to strengthen alloys. Precipitation of ceramic phases in ...
... chemical precipitation and filtration for dissolved metals; carbon adsorption and biological oxidation for organic pollutants; ... Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. It is a ... Most ores are the chemical compound of the metal and other elements, such as oxygen (as an oxide), sulfur (as a sulfide), or ... The oxygen in the ore binds to carbon at high temperatures as the chemical potential energy of the bonds in carbon dioxide (CO2 ...
Some chemical treatment techniques include ozone and oxygen gas injection, chemical precipitation, membrane separation, ion ... Chemicals can reach into ground water through precipitation and runoff. New landfills are required to be lined with clay or ... Many chemicals undergo reactive decay or chemical change, especially over long periods of time in groundwater reservoirs. A ... As the health effects of most toxic chemicals arise after prolonged exposure, risk to health from chemicals is generally lower ...
Lambie, C. G.; Trikojus, V. M. (June 1937). "The preparation of a purified thyrotropic hormone by chemical precipitation". The ...
... or by chemical precipitation. Ores most amenable to leaching include the copper carbonates malachite and azurite, the oxide ... This causes the chemical precipitation and thus immobilization of major contaminants. Phase 4: Circulation of the liquid by ... Usually this is potable water or stock water (usually less than 500 ppm total dissolved solids), and while not all chemical ... Phase 3: as 2, with the addition of a reducing chemical (for example hydrogen sulfide (H2S) or sodium sulfide (Na2S). ...
These include dry ash handling, closed-loop ash recycling, chemical precipitation, biological treatment (such as an activated ... Typical treatment processes used in the industry are chemical precipitation, sedimentation and filtration.: 145 Textile mills, ... chemical precipitation, filtration), oils and grease removal, removal of biodegradable organics, removal of other organics, ... "Lithium enrichment optimization from Dead Sea end brine by chemical precipitation technique". Minerals Engineering. 170: 107038 ...
Otherwise it must first be removed by ion exchange, adsorption or chemical precipitation. A common form of antibiotic ... Mutation is often used, and is encouraged by introducing mutagens such as ultraviolet radiation, x-rays or certain chemicals. ...
During this time, two main processes were used; phosphates were removed from the wastewater by either chemical precipitation or ... Investigations of the chemical properties of Triclosan have revealed it has the potential to accumulate and persist in the ... "Cleaning Supplies and Household Chemicals." American Lung Association, 2020, www.lung.org/clean-air/at-home/indoor-air- ... Artificial fragrances can cause sensitivity, allergies, and rashes and some of these chemicals are known carcinogens and ...
Deposition: The material settles on a horizontal plane either through chemical or physical precipitation. Note: The secondary ... Weathering: the chemical or physical forces breaking apart the solid materials that are potentially transported. Erosion: The ... There must be repeated depositional events with changes in precipitation of materials over time. The thickness of graded beds ... Grades of the bedding material are determined by precipitation of solid components compared to the viscosity of the medium in ...
The graphene-sulfur nanocomposites were prepared with a combination of thermal and chemical precipitation. The Mg/S cell ... Two commercial chemicals, a magnesium amide and aluminum chloride were mixed in a solvent, the product can then be used ... Journal of the American Chemical Society. 137 (38): 12388-12393. doi:10.1021/jacs.5b07820. ISSN 0002-7863. PMID 26360783. Gao, ...
Chemical precipitation is a common process used to reduce heavy metals concentrations in wastewater. The dissolved metal ions ... Wang, Lawrence K.; Vaccari, David A.; Li, Yan; Shammas, Nazih K. (2005), "Chemical Precipitation", Physicochemical Treatment ... Different chemical procedures for the conversion into final products or the removal of pollutants are used for the safe ... The removal or destruction of microbial pathogens is essential, and commonly involves the use of reactive chemical agents such ...
It has been asserted that chemical precipitation methods result in the cubic zincblende form. Pigment production usually ... CS1: long volume value, Chemical articles with multiple compound IDs, Multiple chemicals in an infobox that need indexing, ... In the chemical bath deposition method, thin films of CdS have been prepared using thiourea as the source of sulfide anions and ... Cadmium sulfide can be prepared by the precipitation from soluble cadmium(II) salts with sulfide ion. This reaction has been ...
Processes could involve techniques for chemical reactions, precipitations, filtrations and dissolutions.: 150 Determination of ... Philadelphia, Pa.: Chemical Heritage Foundation. ISBN 978-0-941901-23-9. Braun, Robert Denton (2016). "Chemical analysis". ... American Chemical Society. September 25, 1941. p. NA. Drees, Julia C.; Wu, Alan H. B. (2013). "Chapter 5: Analytic techniques ... One of the first fully integrated instruments: 11 or "black boxes" used in modern chemical laboratories, it sold for $723 in ...
... and the precipitation that results when grown with the chemicals Tween 20 or Cremophor EL. The type strain is NCCPF 127130 ( ...
Chemical sedimentary rocks, including some carbonates, are deposited by precipitation of minerals from aqueous solution. These ... There are four primary types of sedimentary rocks: clastics, carbonates, evaporites, and chemical. Clastic rocks are composed ...
Study of precipitation, chemical variation and powder properties". Journal of Nuclear Materials. 99 (2-3): 135-147. Bibcode: ... doi:10.1016/0022-3115(81)90182-3. Kan-Sen, Chou; Ding-Yi, Lin; Mu-Chang, Shieh (May 1989). "Precipitation studies of ammonium ... doi:10.1016/0022-3115(89)90246-8. Mellah, A.; Chegrouche, S.; Barkat, M. (March 2007). "The precipitation of ammonium uranyl ... Mellah, A.; Chegrouche, S.; Barkat, M. (2007-03-01). "The precipitation of ammonium uranyl carbonate (AUC): Thermodynamic and ...
The chemical causes the precipitation of dissolved proteins, which is measured from the degree of turbidity. It is also used ... Articles containing unverified chemical infoboxes, Articles with short description, Short description matches Wikidata, ...
Some chemical treatment techniques include ozone and oxygen gas injection, chemical precipitation, membrane separation, ion ... This area, called the capillary fringe, is often highly contaminated, as it holds undissolved chemicals, chemicals that are ... Contaminants found in groundwater cover a broad range of physical, inorganic chemical, organic chemical, bacteriological, and ... Chemical precipitation is commonly used in wastewater treatment to remove hardness and heavy metals. In general, the process ...
Gustav Valentine Alsing, who was Danish and an acknowledged expert on chemical precipitation, designed the works. Construction ... The coke filters were not particularly successful, and were abandoned in favour of precipitation. Sludge from this process was ...
This disturbs the chemical balance and causes precipitation of the carbonates, which then creates sedimentary deposits. Since ... The precipitation of calcium carbonate, however, does not occur right at the springs of the rivers that flow into the Plitvice ... For the precipitation of carbonate chalk (calcium carbonate) the water needs to reach a certain mineral saturation level. At ... The area of a river, in which the formation of tufa occurs, is called precipitation area. Along the Korana river for example, ...
These includes processes like chemical precipitation, chemical disinfection, Advanced oxidation process (AOP), ion exchange, ... Chemical treatments utilizes the additive of chemicals to make industrial water suitable for use or discharge. ... Most petroleum refineries, chemical and petrochemical plants have onsite facilities to treat their wastewaters so that the ... Chemical additives to reduce these disadvantages may introduce toxicity to wastewater. Water cooling is commonly used for ...
Recently it has been demonstrated that microbially induced precipitation may be more important than physico-chemical ... 2009) showed with flume experiments that precipitation does not occur unless a biofilm is present, despite supersaturation. ... Since carbonate solubility decreases with increased pH, precipitation is induced. Supersaturation may be enhanced by factors ... fault-related CO 2 as the key control in precipitation". Terra Nova. 26 (1): 1-13. doi:10.1111/ter.12059. Forster, A.; Forster ...
For several years, Odén collected data on the chemicals contaminating the precipitation, lakes and land in Sweden; on 24 ... Acidification of precipitation). He wrote in the article that precipitation in Europe over a 20-year period had gradually ... He was a pioneer of publicizing the problems of acid precipitation in Europe. In 1986, he disappeared while working on a ... ISBN 978-1-4398-2645-4. Proceedings of the First International Symposium on Acid Precipitation and the Forest Ecosystem, May 12 ...
Chemical weathering includes dissolution of matter composing a rock and precipitation in the form of another mineral. Clay ... The most common mineral constituent of silt and sand is quartz, also called silica, which has the chemical name silicon dioxide ... Due to the large surface area available for chemical, electrostatic, and van der Waals interaction, the mechanical behavior of ... Weathering mechanisms are physical weathering, chemical weathering, and biological weathering Human activities such as ...
A study of the exact chemical components of the precipitation in the park has been carried out. The park possesses a large ... Galloway, James N.; William C. Keene (20 March 1996). "Processes controlling the composition of precipitation at a remote ...
This result occurs when chemical use is excessive or poorly timed with respect to high precipitation. The resulting ... Chemical use and handling. Following enactment of the U.S. Resource Conservation and Recovery Act (RCRA) in 1976, and later the ... Measurements can also be made in batch form by extracting a single water sample and conducting any number of chemical or ... ISBN 0-8225-4596-9 Wigley T.M.L & Jones P.D (1985). "Influences of precipitation changes and direct CO2 effects on streamflow ...
The primary removal methods include: (1) sorption and precipitation, (2) chemical reaction, and (3) reactions involving ... Sorption and precipitation are potentially reversible and may thus require removal of the reactive medium and gathered products ... Immobilization of the contaminant may occur through sorption to the barrier materials or precipitation from the dissolved state ... In: Tarr M. A. (ed.), Chemical Degradation Methods for Wastes and Pollutants; Environmental and Industrial Applications. ...
Further developments in alternative pre-tanning processes and precipitation recovery/re-use of chemicals continue to be ... Precipitation techniques and fluid-reuse has reduced the total amount of solid and water waste produced. High-exhaustion ... The hides are spun in a float of chemicals and dyes, mostly consisting of oils distilled from different tree barks and ... Tanneries process animal skins with the use of chemicals to alter the proteins and produce a durable and flexible product. ...
Bittern can also be used as a source of magnesium ions (Mg2+) for the precipitation of struvite, a useful fertilizer, from ... Chemical Engineering and Processing: Process Intensification. 47 (2): 215-221. doi:10.1016/j.cep.2007.02.012. ISSN 0255-2701. ... Bittern is commonly formed in salt ponds where the evaporation of water prompts the precipitation of halite. These salt ponds ... Ethanol is also used, but it exhibits a preference for potassium sulfate precipitation. The solution can furthermore be used in ...
He later admitted his mistake when it proved to be just the product of an inorganic chemical process (precipitation). In 1868 ... George Charles Wallich claimed that Bathybius was a product of chemical disintegration. In 1872 the Challenger expedition began ...