cn101284693b natural organic polymer composite flocculant

CN101284693B - Natural organic polymer composite flocculant

The invention provides a natural macromolecule composite flocculant, which is composed of plant amylose made from degraded chitosan and oreocnide frutescens skin and/or Chuanghua

May 26, 2008 · The invention provides a natural macromolecule composite flocculant, which is composed of plant amylose made from degraded chitosan and oreocnide frutescens skin and/or Chuanghua nanmu skin, and can be used in such fields of cane juice clarification, syrup floating, decoloring, wastewater clarification, mineral dressing setting agent, the

Biopolymer-based flocculants: a review of recent technologies

A decade ago, Guibal et al. reviewed the use of chitosan for clay suspensions, organic suspensions, dyes, and humic acid solutions. 69 Another review of the flocculation performance of chitosan-based flocculants in suspensions of organic contaminants was written by Renault et al. 70 Since then, numerous bio/natural flocculants have been

A novel iron-based composite flocculant for enhanced

There are three categories of flocculants: (a) inorganic flocculants, for example aluminum sulfate(alum) or polyaluminum chloride (PAC); (b) organic synthetic high-polymer flocculants, such as poly-acrylamide and polyethylene imine, and (c) naturally occurring flocculants, including guar gum, CTS,sodium alginate and microbial flocculants [1, 2].

Comparison of Synthetic and Natural Organic Polymers as

Abstract:Performance of synthetic organic polymer (polyacrylamide) and natural organic polymers (pectin) as flocculant in coagulation-flocculation treatment will be assessed. Analysis of functional group of organic polymer was done by Fourier Transform Infrared Spectroscopy - Attenuated Total Reflectance (FTIR-ATR).

Water treatment flocculation: Which flocculation agent is best?

Results indicated that it achieve the best flocculation performance when the raw material mass ratio was 2:1:1, the dosage of the composite flocculant was 20 mg/L, and the removal efficiency of COD and turbidity with this composite flocculant reached 89.6% and 99.2%, respectively.

The use of natural organic flocculants for harvesting

The ability of three natural flocculants to flocculate and settle microalgal cultures was estimated by optical density measurements before and after settling at a wavelength of 750 nm. The flocculants were assayed in two different microalgal species, grown in municipal wastewater for 2, 4, 6 and 12 days. All three flocculants showed some

A kaolinite-based design of kaolin/TiO2–PAM composite

We prepared an efficient kaolin–TiO 2 –polyacrylamide (PAM) organic–inorganic composite flocculant; the synthesis process is simple and suitable for mass industrial production. First, the surface of kaolin was modified with titanium dioxide, and then the acrylamide monomer was initiated on the surface by a surface-initiated polymerization

Biopolymer-based flocculants: a review of recent technologies

This aggregation is different from that achieved by the manipulation of solids surface charges through adjusting pH, addition of salts, or very low molecular weight polymers, known as coagulation. 5 Since this review is concerned with polymers, we will include aggregation induced by charge neutralization (use of low molecular weight charged poly...

A novel iron-based composite flocculant for enhanced

Their purpose is to remove and neutralize charge density of particles with coagulation and then facilitate particle bounding through flocculation so that the larger aggregated particles easily separate from the water and settle to the bottle. Common applications include: Slurry Pond Management Wastewater solids dewatering

Application of coagulation/flocculation in oily wastewater

The invention discloses a composite flocculant for treating printing and dyeing wastewater, which is prepared from the following raw materials in parts by weight: 15-25 parts of activated carbon fiber, 4-11 parts of acrylamide, 2-9 parts of sodium carboxymethylcellulose, 5-17 parts of polyvinyl alcohol, 3-6 parts of a cross-linking agent, 0.003-0.006 part of an initiator, 3-5 parts of a

Water treatment flocculation: Which flocculation agent is best?

The ability of three natural flocculants to flocculate and settle microalgal cultures was estimated by optical density measurements before and after settling at a wavelength of 750 nm. The flocculants were assayed in two different microalgal species, grown in municipal wastewater for 2, 4, 6 and 12 days. All three flocculants showed some