| 菜籽秆预处理废液再生木质素对镉铅离子的吸附性能 |
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| 引用本文： | 杜若愚,刘伟,许滨滨,王小平,贺有周,郑旭煦.菜籽秆预处理废液再生木质素对镉铅离子的吸附性能[J].化工学报,2015,66(9):3726-3732. |
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| 作者姓名： | 杜若愚 刘伟 许滨滨 王小平 贺有周 郑旭煦 |
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| 作者单位： | 重庆工商大学催化与功能有机分子重庆市重点实验室, 环境与资源学院, 重庆 400067 |
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| 基金项目： | 重庆工商大学青年博士基金项目(1352016)。 |
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| 摘 要： | 采用有机酸法处理菜籽秆并从预处理废液中再生酸不溶性木质素固体,之后对模拟废液中的镉、铅离子进行吸附实验。探讨了木质素再生策略、结晶度、比表面积与基团组成对重金属离子吸附效果的影响。实验结果表明:该类再生木质素能有效地吸附模拟废液中的Cd2+、Pb2+离子,其功能基团组成是影响吸附效果的关键因素。此外,两种木质素吸附剂吸附Cd2+离子的能力均强于吸附Pb2+离子的能力。
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| 关 键 词： | 重金属 污染 吸附 平衡 木质素 生物精炼 |
| 收稿时间： | 2015-06-04 |
| 修稿时间： | 2015-06-14 |
Adsorption of cadmium and lead ions onto regenerated lignin from pretreatment liquid of rapeseed stalk |
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| DU Ruoyu,LIU Wei,XU Binbin,WANG Xiaoping,HE Youzhou,ZHENG Xuxu.Adsorption of cadmium and lead ions onto regenerated lignin from pretreatment liquid of rapeseed stalk[J].Journal of Chemical Industry and Engineering(China),2015,66(9):3726-3732. |
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| Authors: | DU Ruoyu LIU Wei XU Binbin WANG Xiaoping HE Youzhou ZHENG Xuxu |
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| Affiliation: | Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resource, Chongqing Technology and Business University, Chongqing 400067, China |
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| Abstract: | Acid-insoluble lignin solids were regenerated from the organic-acid pretreatment waste liquor of rapeseed stalk and were used for the adsorption of cadmium and lead ions from the artificial waste liquor. The influence of regeneration strategy, crystallinity, surface area and functional group content on the adsorption efficiency were studied in this paper. The results indicated that these two types regenerated lignins can effectively adsorb Cd2+, Pb2+ ions from artificial waste liquor and the content of functional group plays an key factor. In addition, the adsorbability of both two types of lignins is larger for Cd2+ ions than for Pb2+ ions. |
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| Keywords: | heavy metal pollution adsorption equilibrium lignin biorefinery |
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