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首页> 外文会议>2011 National Postgraduate Conference : Energy amp; sustainability: Exploring the Innovative Minds >Biosorption of heavy metals by potassium hydrogen phosphate and sodium oxalate modified lignocellulosic waste
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Biosorption of heavy metals by potassium hydrogen phosphate and sodium oxalate modified lignocellulosic waste

机译：磷酸氢钾和草酸钠改性木质纤维素废料对重金属的生物吸附

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摘要

Heavy metals are among the most toxic nuisances that pose a huge pressure on the environment. This in effect calls for for the development of a noble low cost and efficient technology for the removal of heavy metal from industrial effluents. In this particular research, lead (II) biosorption capacity of chemically modified lignocellulosic wastes (rice husk and sugarcane bagasse) has been studied. The two selected biosorbents are abundant and low cost biosorbents with promising potential to remove hazardous heavy metals from effluent streams. In the study, after executing rigorous investigation on the potential of several chemical modifiers, potassium hydrogen phosphate and sodium oxalate were found to be the best modifiers to improve the sorption capacity of rice husk and sugarcane bagasse. Besides, impact of particle size and pH has been studied. Characterization of the sorbent surfaces has been made before and after chemical modification and after sorption of heavy metals using furrier transform infra-red spectroscopy (FTIR). For the selected chemically modified sorbents of rice husk and sugarcane bagasse intensive study was performed on the sorption kinetics for varying metal and sorbent doses.
机译：重金属是最有害的有害物质，会对环境造成巨大压力。实际上，这要求开发一种高贵的低成本高效技术，以从工业废水中去除重金属。在这项特殊的研究中，已经研究了化学修饰的木质纤维素废料（稻壳和甘蔗渣）对铅（II）的生物吸附能力。两种选择的生物吸附剂是丰富的低成本生物吸附剂，具有从废水中去除有害重金属的潜力。在这项研究中，在对几种化学改性剂的潜力进行了严格的研究后，发现磷酸氢钾和草酸钠是提高稻壳和甘蔗渣吸附能力的最佳改性剂。此外，已经研究了粒径和pH的影响。在进行化学修饰之前和之后以及使用傅里叶变换红外光谱（FTIR）吸附重金属之后，已经对吸附剂表面进行了表征。对于选定的化学修饰的稻壳和甘蔗渣吸附剂，针对不同金属和吸附剂剂量的吸附动力学进行了深入研究。

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