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Flocculants, or flocculating agents (also known as flocking agents), are chemicals that promote flocculation by causing colloids and other suspended particles in liquids to aggregate, forming a floc. Flocculants are used in water treatment processes to improve the sedimentation or filterability of small particles.
Agglomeration (except in polymer science) Coagulation (except in polymer science) Flocculation (except in polymer science) Process of contact and adhesion whereby dispersed molecules or particles are held together by weak physical interactions ultimately leading to phase separation by the formation of precipitates of larger than colloidal size.
This separation is achieved by addition of a flocculating or coagulating agent, which induce the aggregation of the suspended solids. The aggregates are normally separated by sedimentation, leading to sewage sludge. Commonly used flocculating agents in water treatment include multivalent metal ions (e.g., Fe 3+ or Al 3+), polyelectrolytes, or both.
Jar test for coagulation. The dose of the coagulant to be used can be determined via the jar test. [1] [5] The jar test involves exposing same volume samples of the water to be treated to different doses of the coagulant and then simultaneously mixing the samples at a constant rapid mixing time. [5]
This water-soluble polymer, which has very low toxicity, is widely used as thickener and flocculating agent. These functions are valuable in the purification of drinking water, corrosion inhibition, mineral extraction, and paper making. Polyacrylamide gels are routinely used in medicine and biochemistry for purification and assays. [6]
Pages in category "Lachrymatory agents" The following 56 pages are in this category, out of 56 total. This list may not reflect recent changes. A. Acetic anhydride;
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Pages in category "Chelating agents" The following 164 pages are in this category, out of 164 total. This list may not reflect recent changes. ...
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