Biosorption of chromium from aqueous solution and electroplating wastewater using mixture of Candida lipolytica and dewatered sewage sludge

被引：91

作者：

Ye, Jinshao ^{[1
,2
]}

Yin, Hua ^{[1
]}

Mai, Bixian ^{[2
]}

Peng, Hui ^{[1
]}

Qin, Huaming ^{[1
]}

He, Baoyan ^{[1
]}

Zhang, Na ^{[1
]}

机构：

[1] Jinan Univ, Dept Environm Engn, Guangzhou 510632, Guangdong, Peoples R China

[2] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Candida lipolytica; Chromium; Sewage sludge; Biosorption; Heavy metal; COCONUT COIR PITH; HEAVY-METALS; HEXAVALENT CHROMIUM; ACTIVATED-SLUDGE; ASPERGILLUS-NIGER; CR(VI) SORPTION; REMOVAL; BIOMASS; EQUILIBRIUM; PLANT;

D O I：

10.1016/j.biortech.2010.01.014

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this study, the objective was to investigate Cr removal from aqueous solutions, as well as Cr, Cu, Ni and Zn from electroplating wastewaters by the mixture of Candida lipolytica and sewage sludge. The bioreduction ratios of Cr(VI) and the removal ratios of total Cr showed that initial pH, biosorbent dosage and contact time were the important parameters for Cr biosorption. The range of optimal pH for the mixture (15) was wider than C. lipolytica (1-4) and sewage sludge (2-4), respectively. Biosorption and bioreduction potentials of living C lipolytica were better than those of cell wall and cytoplasm. Bonded hydroxyl group, CH2 asymmetric stretch, amide I, amide II, amide III, secondary amide, pyridine(I)beta(C-H) and pyridine(II)beta(C-H) were detected in the biosorbent and they were the functional groups for binding Cr. The effect of Cu and Zn in combination was significant on the removal of total Cr and the bioreduction of Cr(VI). (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3893 / 3902

页数：10

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