| 改性大豆皮吸附剂对Pb2+的生物吸附性能研究 |
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| 引用本文： | 李嘉,陈恩赞,苏海佳,谭天伟. 改性大豆皮吸附剂对Pb2+的生物吸附性能研究[J]. 中国化学工程学报, 2011, 19(2): 334-339 |
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| 作者姓名： | 李嘉 陈恩赞 苏海佳 谭天伟 |
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| 作者单位： | State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| 基金项目： | the National Natural Science Foundation of China，the National Basic Research Program of China，the National High Technology Research and Development Program of China，Chinese Universities Scientific Fund |
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| 摘 要： | Using soybean hull residue after the soluble dietary fiber being removed during the soybean processing industry as crude material,a novel absorbent,modified soybean hulls,is prepared.Its adsorption behavior for Pb2+ is studied.The adsorbent has a large and efficient adsorption capacity for Pb2+,up to 20% of the mass of dry ad-sorbent.Its maximum adsorption capacity for Pb2+ reaches 217 mg·g-1 at initial Pb2+ concentration of 2000 mg·L-1,which is twice that of yeast absorbent and threefold greater than that of chitosan absorbent.The adsorption ability is sensitive to pH value in the solution and the optimal pH for adsorption of Pb2+ is 7.0.In the presence of other metal ions (Ca2+,Mg2+ and Na+) in the solution,their effect on the adsorption capacity for Pb2+ is not obvious.After 5 cy-cles of adsorption,80% adsorption capacity of Pb2+ is maintained.Compared with various available commercial resins,the modified soybean hulls are a plentiful,inexpensive and effective medium for the capture of dissolved Pb2+ from waste streams.
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| 关 键 词： | biosorption Pb2+ soybean hulls desorption wastewater |
| 收稿时间： | 2010-04-20 |
| 修稿时间： | 2010-4-20 |
Biosorption of Pb2+ with Modified Soybean Hulls as Absorbent |
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| LI Jia,CHEN Enzan,SU Haijia,TAN Tianwei. Biosorption of Pb2+ with Modified Soybean Hulls as Absorbent[J]. Chinese Journal of Chemical Engineering, 2011, 19(2): 334-339 |
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| Authors: | LI Jia CHEN Enzan SU Haijia TAN Tianwei |
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| Affiliation: | State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Using soybean hull residue after the soluble dietary fiber being removed during the soybean processing industry as crude material, a novel absorbent, modified soybean hulls, is prepared. Its adsorption behavior for Pb2+ is studied. The adsorbent has a large and efficient adsorption capacity for Pb2+, up to 20% of the mass of dry adsorbent. Its maximum adsorption capacity for Pb2+ reaches 217 mg•g1 at initial Pb2+ concentration of 2000 mg•L1, which is twice that of yeast absorbent and threefold greater than that of chitosan absorbent. The adsorption ability is sensitive to pH value in the solution and the optimal pH for adsorption of Pb2+ is 7.0. In the presence of other metal ions (Ca2+, Mg2+ and Na+) in the solution, their effect on the adsorption capacity for Pb2+ is not obvious. After 5 cycles of adsorption, 80% adsorption capacity of Pb2+ is maintained. Compared with various available commercial resins, the modified soybean hulls are a plentiful, inexpensive and effective medium for the capture of dissolved Pb2+ from waste streams. |
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| Keywords: | biosorption Pb2+ soybean hulls desorption wastewater |
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