Flocculating Properties of the Novel Bioflocculant Poly(γ-Glutamic Acid) and its Use in Jean Dyeing Wastewater Treatment

Abstract:

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We studied a novel bioflocculant poly(γ-glutamic acid) (PGA). With the addition of 4mg/L PGA (Mw=9×105Da) and 12 Mm CaCl2, the optimal temperature for flocculation performance of PGA in the kaolin suspension was about 30°C, giving the highest flocculating activity of 98%, respectively. Studies of the flocculating properties revealed that it was stable at 30-90°C and pH 7-11. With treatment of jean dyeing wastewater flocculation, PGA showed that the color, COD, NH3-N, alkalinity and hardness removal ratios were 90%, 91.7%, 73.3%, 65 % and 86 %, respectively. Bioflocculant PGA may find possible application as an alternative for textile dyeing industry and environmental bioremediation.

Info:

Periodical:

Advanced Materials Research (Volumes 183-185)

Edited by:

Yanguo Shi and Jinlong Zuo

Pages:

125-129

DOI:

10.4028/www.scientific.net/AMR.183-185.125

Citation:

G. Yang et al., "Flocculating Properties of the Novel Bioflocculant Poly(γ-Glutamic Acid) and its Use in Jean Dyeing Wastewater Treatment", Advanced Materials Research, Vols. 183-185, pp. 125-129, 2011

Online since:

January 2011

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Price:

$35.00

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