Publication

Removing solids suspended in an aqueous medium

Jutta Christine Wandrey
1985
Patents

Abstract

Suspended org. and inorg. solids are removed from aq. soln. by adding an improved water-sol. acryloguanamine copolymer flocculant with mol. wt. >2000 and contg. 0-1000 units each of acrylamide, vinyl guanamine, acrylic acid, trimerized acrylonitrile structure I, and acrylonitrile groups in an acid aq. soln. at pH > 2 and temp. above the f.p., optionally with inorg. flocculants. Thus, when the copolymeric flocculant was added at 5, 10, 12, 17, 21, 30, and 50 mg/L to a soln. contg. suspended solids 0.05-1.2 g/L, clarification was 90% in 10 min, 95 in 10, 97 in 10, 100 in 11, 100 in 10, 100 in 7, and 100% in 5 min, resp. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/13dd52b4-26ac-4bfc-bf4e-79111c2a0a06

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Jutta Christine Wandrey
1985
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/13dd52b4-26ac-4bfc-bf4e-79111c2a0a06

About this result

Related concepts (32)

Acrylic acid

Acrylic acid (IUPAC: propenoic acid) is an organic compound with the formula CH2=CHCOOH. It is the simplest unsaturated carboxylic acid, consisting of a vinyl group connected directly to a carboxylic acid terminus. This colorless liquid has a characteristic acrid or tart smell. It is miscible with water, alcohols, ethers, and chloroform. More than a million tons are produced annually. The word "acrylic" was coined in 1843, for a chemical derivative of acrolein, an acrid-smelling oil derived from glycerol.

Acid

An acid is a molecule or ion capable of either donating a proton (i.e. hydrogen ion, H+), known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid. The first category of acids are the proton donors, or Brønsted–Lowry acids. In the special case of aqueous solutions, proton donors form the hydronium ion H3O+ and are known as Arrhenius acids. Brønsted and Lowry generalized the Arrhenius theory to include non-aqueous solvents.

Sedimentation (water treatment)

Sedimentation is a physical water treatment process using gravity to remove suspended solids from water. Solid particles entrained by the turbulence of moving water may be removed naturally by sedimentation in the still water of lakes and oceans. Settling basins are ponds constructed for the purpose of removing entrained solids by sedimentation. Clarifiers are tanks built with mechanical means for continuous removal of solids being deposited by sedimentation. Clarification does not remove dissolved species.

Related publications (3)

Removing solids suspended in an aqueous medium

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