Send to

Choose Destination
See comment in PubMed Commons below
Bioresour Technol. 2009 Sep;100(18):4233-9. doi: 10.1016/j.biortech.2008.12.033. Epub 2009 May 5.

Optimization of flocculation conditions for kaolin suspension using the composite flocculant of MBFGA1 and PAC by response surface methodology.

Author information

College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.


The response surface methodology (RSM) was employed to study the treatment of kaolin suspension by the composite flocculant of MBFGA1 and PAC. And the two quadratic models of the five factors were established with the flocculating rate and floc size as the target responses. The optimal flocculating conditions are MBFGA1 99.75 mg/L, PAC 121 mg/L, pH 7.3, CaCl(2) 27 mg/L and the top speed of stir 163 rpm, respectively. That was obtained from the compromised results of two desirable responses, flocculating rate as 100% and floc size as 0.7 mm which were deduced from the frequency of responses. By means of Zeta potential measurement and experiment of flocculating process, it could be concluded that PAC has more capability on changing the potential of colloid and MBFGA1 is good at absorption and bridge effect. The composite of two kinds of predominance makes a significant sense on enhancing flocculating rate, reducing flocculent costs and decreasing secondary pollution.

[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center