Preparation and Study of a Composite Flocculant
A high flocculation performance composite flocculant was prepared with sodium alginate, polyaluminium ferric chloride and cationic polyacrylamide. And the composite flocculant was used in papermaking wastewater treatment. 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
In short, polyaluminum chloride plays various roles including adsorption, destabilization, adhesion, bridging, and furl flocculation. 3.5.3. Role of Polymer in CMHa. The molecular mass, molecular structure, shape, and groups of polymer can affect the activity of flocculant.
Synthesis, characterization and flocculation activity
Synthesis, characterization and flocculation activity of of the hybrid polymer for the treatment of 2.5 g L 鈭? kaolin suspension indicates that it had an excellent flocculation capacity and its flocculation efficiency B.T. Poh, M. MahalingamFlocculation activity of novel ferric chloride-polyacrylamide (FeCl 3-PAM) hybrid polymer.
In contrary, flocculation performance was greatly restricted in the presence of SO 4 2鈭? LBF was less pH sensitive and shear sensitive than polyacrylamide (PAM) due to the enhanced charge neutralization and bridging action. On the basis of that, LBF could be used as a promising flocculant in dye wastewater treatment.
Modeling and Optimization of New Flocculant Dosage and pH
values of the wastewater sample for the flocculation experiments were as follows: Turbidity 305 NTU, COD 368 mg/L, and pH 7.4. 2.5. Wastewater Flocculation The jar test used in our experiments was a programmable apparatus (TA6, Wuhan, China). It consisted of six paddles on a bench. The paddles were connected to each other by a gear mechanism,
A novel bioflocculant CBF with high flocculating activity, produced by mixed culture of Rhizobium radiobacter F2 and Bacillus sphaericus F6 from soil, was investigated with regard to its production and flocculation performance in Al(III) removal. The most preferred carbon source, nitrogen source and C/N ratio (w/w) for strains F2 and F6 to produce CBF were glucose, urea and 20, respectively.
Norhashimah Morad - IndTech
Publication. Selected Journal Papers. Khai Ern Lee, Tjoon Tow Teng, Norhashimah Morad, Beng Teik Poh, Mohanapriya Mahalingam.(2010).Flocculation activity of novel ferric chloride-polyacrylamide (FeCl3-PAM) hybrid polymer.
In this present work, a series of hydrolyzed polyacrylamide grafted carboxymethyl cellulose (CMC-g-HPAM) was prepared. The structure and solution properties of CMC-g-HPAM were characterized by FTIR, 1H-NMR, elemental analysis and zeta potential measurements. The graft copolymers were applied as flocculants to remove methylene blue (MB), a cationic dye, from aqueous solutions.
Preparation and Study of a Composite Flocculant
A high flocculation performance composite flocculant was prepared with sodium alginate, polyaluminium ferric chloride and cationic polyacrylamide. And the composite flocculant was used in papermaking wastewater treatment. 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
A novel bioflocculant CBF with high flocculating activity, produced by mixed culture of Rhizobium radiobacter F2 and Bacillus sphaericus F6 from soil, was investigated with regard to its production and flocculation performance in Al(III) removal. The most preferred carbon source, nitrogen source and C/N ratio (w/w) for strains F2 and F6 to produce CBF were glucose, urea and 20, respectively.
Norhashimah Morad - IndTech
Publication. Selected Journal Papers. Khai Ern Lee, Tjoon Tow Teng, Norhashimah Morad, Beng Teik Poh, Mohanapriya Mahalingam.(2010).Flocculation activity of novel ferric chloride-polyacrylamide (FeCl3-PAM) hybrid polymer.
Polyacrylamide is used to flocculate solids in a liquid. This process applies to water treatment, and processes like paper making and screen printing. Polyacrylamide can be supplied in a powder or liquid form, with the liquid form being sub-categorised as a solution and a white emulsion polymer.
- Does polyaluminium chlorides increase the concentration of aluminium dissolved in purified water?
- The analysis of the obtained results also showed that the concentration of aluminium dissolved in purified water increased with the content of monomer forms of aluminium (Al a) in the coagulant and was significantly lower after coagulation with polyaluminium chlorides than with non-prehydrolysed coagulants.
- Does polyaluminium chloride coagulate with non-prehydrolysed aluminium salts?
- Although the mechanism of coagulation with non-prehydrolysed and prehydrolysed aluminium salts is the same, the presence of polymeric forms of aluminium in polyaluminium chloride solutions makes them more stable in water, providing more effective removal of impurities and lower concentrations of aluminium remaining in the treated water.
- Does polyaluminium chloride coagulation reduce water pollution?
- The aim of this study was to evaluate the effectiveness of the coagulation process using highly polymerised polyaluminium chlorides in reducing the level of pollution of water in a mixture of groundwater and surface water.
- Can polycationic aluminium coagulants prolong hydrolysis time?
- When using non-prehydrolysed primary aluminium coagulants such as e.g., aluminium sulphate (VI), the formation of polycationic aluminium forms could prolong the hydrolysis time, which is only possible by acidification of the water before coagulation to pH < 6.0 [ 19 ].
