醋糟对模拟废水中Pb^(2+)的吸附性能研究  

Adsorption Property of Vinegar Residue on Pb^(2+) in Simulated Wastewater

作　　者：徐清萍[1] 纵伟[1] 孟君[1] 

机构地区：[1]郑州轻工业学院食品与生物工程学院,郑州450002

出　　处：《中国调味品》2015年第11期23-27,共5页China Condiment

基　　金：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)

摘　　要：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。The adsorption property of vinegar residue on Pb^2＋ in simulated wastewater is studied for better application of vinegar residue.The effects of temperature,pH,adsorption time,initial Pb^2＋concentration,etc.,on the adsorption of Pb^2＋ are investigated.Results：The vinegar residue has a high adsorption rate on Pb^2＋ in a wide pH and temperature range.The adsorption rate of vinegar residue on Pb^2＋ is above 91% in pH 3-10 and at the temperature of 25-40 ℃.The adsorption of Pb^2＋ by vinegar residue is fast.The adsorption rate is higher than 94% when the initial Pb^2＋concentration is less than 64.84 mg/L and the amount of vinegar residue is 33.33 g/L.The adsorption rate is more than 92% when the amount of vinegar residue is 7 g/L.Na^＋ and K^＋ have little effect on the adsorption of Pb^2＋ by vinegar residue.Ca^2＋ and Mg^2＋ could significantly affect the adsorption of Pb^2＋ by vinegar residue when the concentration is more than 500 mg/L.Conclusion：The content of lead in solid-state fermented vinegar is influenced by vinegar residue.Heavy metal pollution should be prevented when vinegar residue is reused.Vinegar residue is a kind of safe natural product for Pb^2＋removal.

关 键 词：铅离子 醋糟 吸附 综合利用 废水处理 

分 类 号：TS201.1[轻工技术与工程—食品科学]