| 软锰矿改性污泥活性炭对Cu~(2+)吸附特性的研究 |
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| 引用本文： | 汪莉,陈尧,蒋文举,雍晓蕾. 软锰矿改性污泥活性炭对Cu~(2+)吸附特性的研究[J]. 环境科学与技术, 2011, 34(11): 118-121,129. DOI: 10.3969/j.issn.1003-6504.2011.11.024 |
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| 作者姓名： | 汪莉 陈尧 蒋文举 雍晓蕾 |
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| 作者单位： | 1. 四川大学建筑与环境学院,四川成都,610065
2. 成都市排水有限责任公司,四川成都,610042 |
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| 基金项目： | 四川大学青年教师科研启动基金(2009SCU11041) |
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| 摘 要： | 文章对比研究了污泥活性炭(AC)和1%软锰矿改性的污泥活性炭(ACP)对溶液中Cu2+的吸附特性,考察了时间、pH值和吸附剂投加量等因素对吸附反应的影响。结果表明:室温下,180 min后Cu2+吸附达到平衡,pH=4.8时吸附效果最优;伪二阶动力学方程和Langmuir吸附等温方程能很好地拟合两种污泥活性炭的吸附反应。通过计算,室温下,改性前后的污泥活性炭Langmuir模型的饱和吸附量Qm分别是78.13 mg/g和94.34 mg/g。在初始浓度200 mg/L,pH=5,吸附剂投加量为2g/L时,1%软锰矿改性的污泥活性炭对Cu2+的最大吸附量为90.15 mg/g,比未改性时提高了23.33%。
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| 关 键 词： | 软锰矿 污泥活性炭 Cu2+吸附动力学 等温模型 |
Removal of Cu2+ from Aqueous Solution Using Sewage Sludge-based Activated Carbons with Pyrolusite Modification |
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| WANG Li,CHEN Yao,JIANG Wen-ju,YONG Xiao-lei. Removal of Cu2+ from Aqueous Solution Using Sewage Sludge-based Activated Carbons with Pyrolusite Modification[J]. Environmental Science and Technology, 2011, 34(11): 118-121,129. DOI: 10.3969/j.issn.1003-6504.2011.11.024 |
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| Authors: | WANG Li CHEN Yao JIANG Wen-ju YONG Xiao-lei |
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| Affiliation: | WANG Li1,CHEN Yao1*,JIANG Wen-ju2,YONG Xiao-lei2(1.School of Architecture and Environment,Sichuan University,Chengdu 610065,China,2.Chengdu Draining.Co.,L,Chengdu 610042,China) |
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| Abstract: | Adsorptive capacity of copper ion on sewage sludge-based activated carbon(AC) and sewage sludge-based activated carbon with 1% pyrolusite on modification(ACP) were studied.Impact of various parameters such as pH,contact time,adsorbent dose was evaluated.Results showed that equilibrium of copper adsorption was reached at 180min and the optimum pH value was 4.8.The adsorption kinetics was found to follow the pseudo-second order model and the adsorption isotherm followed Langmuir better than Freundlich model u... |
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| Keywords: | pyrolusite sewage sludge-based activated carbon Cu2 adsorption kinetics isotherm |
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