2010 Volume 4 Issue 7
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Li Jiayuan, Wu Yanyu, Zhou Shaoqi. Application of response surface methodology (RSM) to optimize coagulation treatment of cassava starch wastewater[J]. Chinese Journal of Environmental Engineering, 2010, 4(7): 1555-1560.
Citation: Li Jiayuan, Wu Yanyu, Zhou Shaoqi. Application of response surface methodology (RSM) to optimize coagulation treatment of cassava starch wastewater[J]. Chinese Journal of Environmental Engineering, 2010, 4(7): 1555-1560.
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Application of response surface methodology (RSM) to optimize coagulation treatment of cassava starch wastewater

  • 1.

    School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004,China

  • 2.

    School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006,China

  • Received Date: 02/02/2010
    Accepted Date: 08/01/2010
    Fund Project:
  • The removal efficiencies for chemical oxygen demand (COD)， turbidity using a new polymer flocculent polymeric aluminum zinc chloride (PAZC) were compared with those obtained using polyaluminum chloride (PAC) as a conventional coagulant. Central composite design (CCD) and response surface method (RSM) were applied to optimize the operating variables viz. pH and coagulant dosage. Quadratic models developed for the two responses (COD and turbidity) studied and the contour plot overlaying critical response contours (65% COD removal, 90% turbidity removal and 90% SS removal) indicated the optimum conditions to be PAZC dosage of 6.5 mg/L at pH 7.7 and PAC dosage of 19.2 mg/L at pH 7.8. The experimental data and model predictions agreed well.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Application of response surface methodology (RSM) to optimize coagulation treatment of cassava starch wastewater

  • Received Date: 02/02/2010
  • Accepted Date: 08/01/2010
Fund Project:

Abstract: The removal efficiencies for chemical oxygen demand (COD)， turbidity using a new polymer flocculent polymeric aluminum zinc chloride (PAZC) were compared with those obtained using polyaluminum chloride (PAC) as a conventional coagulant. Central composite design (CCD) and response surface method (RSM) were applied to optimize the operating variables viz. pH and coagulant dosage. Quadratic models developed for the two responses (COD and turbidity) studied and the contour plot overlaying critical response contours (65% COD removal, 90% turbidity removal and 90% SS removal) indicated the optimum conditions to be PAZC dosage of 6.5 mg/L at pH 7.7 and PAC dosage of 19.2 mg/L at pH 7.8. The experimental data and model predictions agreed well.

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