摘要
研究了用土茯苓粉末去除废水中Hg(Ⅱ)。在进行温度、溶液pH、初始Hg(Ⅱ)质量浓度及土茯苓用量对汞去除率的影响的单因素试验基础上,采用响应曲面分析法(RSM)中的中心组合Box-Behnken Design(BBD)法优化试验方案,建立了两两因素对Hg(Ⅱ)去除率的数学模型。结果表明:二次多项式回归方程对试验拟合度较高(C.V=4.8%<10%,r^2=0.9685),表明该模型可以准确描述试验实测值;在温度45℃、初始Hg(Ⅱ)质量浓度1.30 mg/L、pH=3.86、土茯苓用量4.9 g/L条件下,土茯苓对废水中Hg(Ⅱ)的去除率可达92.28%。
The removal of Hg(Ⅱ) in wastewater using smilax glabra roxb were studied.The effects of temperature,solution pH,initial Hg(Ⅱ) concentration and dosage of smilax glabra roxb on removing of Hg(Ⅱ) were examined.The optimal test parameters were determined according to the Box-Behnken Design(BBD) design in response surface method(RSM),the mathematical model for removal of Hg(Ⅱ) with two factors was established.The results show that the quadratic polynomial regression equation has a high fitting fit(C.V=4.8%<10%,r^2=0.968 5),which indicates that the model can be accurately used to describe the test measured values.Under the conditions of temperature of 45 ℃,initial Hg(Ⅱ) concentration of 1.30 mg/L,solution pH of 3.86,and smilax glabra roxb dosage of 4.9 g/L,the removal rate of Hg(Ⅱ) in wastewater can reach 92.28%.
作者
刘军
蒋安娜
傅金祥
董万里
代志会
LIU Jun;JIANG Anna;FU Jinxiang;DONG Wanli;DAI Zhihui(School of Municipal and Environmental Engineering,Shenyang Jianzhu Universtiy,Shenyang 110168,China)
出处
《湿法冶金》
CAS
北大核心
2019年第6期494-500,共7页
Hydrometallurgy of China
基金
国家水体污染控制与治理科技重大专项(2014ZX07202-011)
关键词
土茯苓
Hg(Ⅱ)
去除
BBD
优化
废水
smilax glabra roxb
Hg(Ⅱ)
removal
BBD
optimization
wastewater
作者简介
第一作者:刘军(1964-),女,硕士,教授,主要研究方向水处理技术及水质检测;通信作者:蒋安娜(1992-),女,硕士,主要研究方向水处理技术。E-mail:1356609366@qq.com。
