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| 酵母融合菌对Cr的吸附性能及机理分析 | |
| 引用本文： | 周艾平,尹华,叶锦韶,彭辉,何宝燕,张娜.酵母融合菌对Cr的吸附性能及机理分析[J].环境科学与技术,2011,34(6):37-42. |
| 作者姓名： | 周艾平 尹华 叶锦韶 彭辉 何宝燕 张娜 |
| 作者单位： | 1. 暨南大学环境工程系,广东广州510632;广东省高校水土环境毒害性污染物防治与生物修复重点实验室,广东广州510632 2. 暨南大学应用化学系,广东广州510632;广东省高校水土环境毒害性污染物防治与生物修复重点实验室,广东广州510632 3. 暨南大学应用化学系,广东广州,510632 |
| 基金项目： | 国家水体污染控制与治理重大科技专项(2008ZX07211-003); 广东省科技计划项目(2008B030302038); 番禺区科技局科技计划项目(2009-Z-64-1) |
| 摘 要： | 研究了酵母融合菌R32对Cr的吸附性能及机理.结果表明,该菌对Cr(Ⅵ)有着很好的吸附效果,最佳吸附条件为pH≤3,投菌量为l0g/L(含水率(78±2)%),吸附温度30～35℃,Cr(Ⅵ)的初始浓度≤20mg/L.当Cr(Ⅵ)的初始浓度为10mg/L时,总铬及Cr(Ⅵ)的去除率达93.7%和96.5%,总铬的残留浓... |
| 关 键 词： | Cr 吸附 动力学 机理 |
Biosorption Performance and Mechanism of Cr by Yeast Fusion Strain |
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| ZHOU Ai-ping,YIN Hua,YE Jin-shao,PENG Hui,HE Bao-yan,ZHANG Na.Biosorption Performance and Mechanism of Cr by Yeast Fusion Strain[J].Environmental Science and Technology,2011,34(6):37-42. | |
| Authors: | ZHOU Ai-ping YIN Hua YE Jin-shao PENG Hui HE Bao-yan ZHANG Na |
| Institution: | ZHOU Ai-ping1,2,YIN Hua1,2*,YE Jin-shao1,PENG Hui3,HE Bao-yan1,ZHANG Na1,2(1.Department of Environmental Engineering,Jinan University,Guangzhou 510632,China,2.Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation,Department of Education of Guangdong Province,3.Department of Applied Chemistry,China) |
| Abstract: | Biosorption and mechanism of Cr by yeast fusion R32 were investigated.Experimental results showed that R32 has a perfect effect on the removal of hexavalent chromium,with the optimum condition as pH less than 3,yeast dosage 10 g/L with water content of(78±2)%,temperature 30~35 ℃ and initial concentration of Cr(Ⅵ) less than 20 mg/L.When initial concentration of Cr(Ⅵ) was 10mg/L,the removal rate of total Cr and Cr(Ⅵ) were 93.7% and 96.5% respectively,and residual concentrations of total Cr and Cr(Ⅵ) were less than 1 mg/L and 0.5 mg/L individually,which met Integrated Wastewater Discharge Standard of GB8978-1996.Configuration and final concentrations of Cr(Ⅲ) in solution varied with pH greatly.Coexistence of Cr(Ⅲ) and Cr(Ⅵ) did not affect the reduction and removal of Cr(Ⅵ),with adsorption process following Lagergren pseudo second-order kinetic regression models preferably.FTIR and SEM analysis revealed that there were such functional groups as-OH,-NH2,-PO2-and-CONH-involved in biosorption,and clear pleats on cell surface was observed. |
| Keywords: | Cr biosorption kinetics mechanism |
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