醋糟对模拟废水中Pb2+的吸附性能研究Adsorption Property of Vinegar Residue on Pb2+ in Simulated Wastewater
徐清萍,纵伟,孟君
摘要(Abstract)：
研究醋糟在模拟废水中吸附Pb2+的性能。考察温度、pH值、吸附时间、吸附剂用量和初始Pb2+浓度等对醋糟吸附Pb2+的影响。结果:醋糟在较广泛pH范围3~10,温度25~40℃时,对低浓度废水中的Pb2+具有较高吸附率,醋糟对Pb2+的吸附率达到91%以上。醋糟对Pb2+的吸附为快速吸附,在初始Pb2+浓度低于64.84mg/L、醋糟用量33.33g/L时吸附率达到94%以上。醋糟用量在7g/L时,吸附率达到92%以上。Na+,K+对醋糟吸附Pb2+的影响较小,Ca2+,Mg2+在浓度大于500mg/L时,会对醋糟吸附Pb2+造成一定影响。结论:醋糟对固态发酵醋产品铅含量控制有一定影响;醋糟的再利用需防止重金属污染;醋糟可作为低浓度含铅废水的潜在吸附剂。
关键词(KeyWords)： 铅离子;醋糟;吸附;综合利用;废水处理
基金项目(Foundation): 河南省高等学校青年骨干教师资助计划(2010GGJS-112);; 河南省重点科技攻关项目(112102110125)
作者(Author): 徐清萍,纵伟,孟君
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