Using etherification to modify pectin extracted from agricultural citrus byproducts, and applying it to remove highly concentration oil and Cr(VI) in simulated wastewater. Orthogonal experiment with factors of reacting time, dosage and pH indicated that modified pectin could treat oil and Cr(VI) with a ideal removal rate. The average removal rates for oil and Cr(VI) are 79% and 77% respectively. Central composite design (CCD) experiment with factors of poly-aluminum sulfate (PAC),zinc sulfate (ZnSO4), pH and microwave irradiation time showed that optimum removal rate for oil could reach 93.8% and 91.4% for Cr(VI) counterpart;using Binomial regression equation could adequately illustrate and predict the experiment results. 

Removal of oil and Cr(?) in wastewater by using modified pectin flocculants

246th National Meeting (2013)

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