| 农林废弃物生物吸附剂去除废水中Cu~(2+)的研究 |
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| 引用本文： | 张玮,詹燕.农林废弃物生物吸附剂去除废水中Cu~(2+)的研究[J].河南农业科学,2012,41(9):78-80. |
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| 作者姓名： | 张玮 詹燕 |
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| 作者单位： | 武汉生物工程学院化学与环境工程系,湖北武汉,430415 |
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| 基金项目： | 武汉市教育局资助项目(2009K097) |
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| 摘 要： | 为了解农林废弃物对重金属的吸附效果,以苹果皮、瓜子壳、茶叶渣和梧桐树叶4种农林废弃物为原料,考察了其对水溶液中Cu2+的吸附能力。用室内模拟的方式,通过静态吸附试验,考察了pH值、吸附剂用量、吸附时间、改性处理4个因素对吸附效果的影响。结果表明:4种农林废弃物对Cu2+的吸附可在60～80min内完成,最佳投加量均为2g/L。pH值对吸附效果的影响较大,最佳pH值为5或6。经改性处理后的4种农林废弃物对Cu2+均有较高的吸附能力,其吸附能力依次为:梧桐树叶>瓜子壳>苹果皮>茶叶渣。可见,化学改性可增强吸附能力,农林废弃物作为一种廉价的吸附剂可以用于生产实践。
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| 关 键 词： | 农林废弃物 改性 Cu2+ 吸附 |
Study on the Effect of Biosorbent of Agricultural and Forestry Waste to Adsorb Copper Ion from Wastewater |
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| ZHANG Wei
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ZHAN Yan.Study on the Effect of Biosorbent of Agricultural and Forestry Waste to Adsorb Copper Ion from Wastewater[J].Journal of Henan Agricultural Sciences,2012,41(9):78-80. |
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| Authors: | ZHANG Wei ZHAN Yan |
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| Institution: | (Chemical and Environmental Engineering,Wuhan Bioengineering Institute,Wuhan 430415,China) |
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| Abstract: | In order to understand the adsorption ability of agricultural and forestry waste,four materials including apple peel,melon seeds shell,residues of tea and leaves of the phoenix tree were collected to test their ability to adsorb copper ion from wastewater.The influencing factors of pH,contact time,adsorbent dosage and modified method were investigated by static adsorption test in the laboratory.The results indicated that the equilibrium could be achieved within 60 to 80 min.Adsorption ability to Copper ion of four kinds of biosorbents was significantly affected by the pH in the wastewater.The best pH range was 5-6 in this experiment.All of the four biosorbents modified had strong capacity to adsorb copper ion,and the order of the adsorption capacity was the leaves of the phoenix tree>melon seeds shell>apple peel>residues of tea.The biosorbents modified can improve their adsorption capacity to Copper ion.Agricultural and forestry waste as a low-cost adsorbent can be used in production practice. |
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| Keywords: | agricultural and forestry waste modification copper ion adsorption |
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