Pb(Ⅱ) and Zn(Ⅱ) biosorption by living B35 biomass: Kinetics, EDX,FTIR and simultaneous biodegradation studies
The biosorption of living B35 biomass (a mixture of various microorganisms) for Pb(II) and Zn(II) was studied.Parameters including biomass dosage, initial metal concentration, and contact time were investigated.The pseudo-second-order model is more suitable for describing the biosorption process of Pb(Ⅱ) and Zn(Ⅱ) by B35 than the pseudo-first-order model.EDX and FTIR were used to determine the interaction between the biosorbent and the heavy metals.The intensity of Na and Ca peak in the EDX spectra decreases after biosorption, suggesting that the ion exchange process is involved.The FTIR spectra indicate that the hydroxyl, amine, carboxyl and phosphate groups may play an important role in the biosorption by complexation process.The capability of B35 to simultaneously adsorb heavy metals and biodegrade m-cresol was confirmed by treating the synthetic complex wastewater.
B35 biomass Biosorption Kinetics EDX FTIR Biodegradation
Yanzhi Qu Qingqiang Meng Zhengfang Ye
Department of Environmental Engineering,Peking University,The Key Laboratory of Water and Sediment S Department of Environmental Engineering,Peking University,The Key Laboratory of Water and Sediment S
国内会议
国家水体污染控制与治理科技重大专项河流重金属污染控制技术交流会
长沙
英文
14-26
2012-02-19（万方平台首次上网日期，不代表论文的发表时间）