花生壳的改性及其对酸性品红的吸附  

Modification of peanut shells and its adsorption to acid fuchsin

作　　者：胡巧开[1,2] 庄艳笑 陈芳[3] 

机构地区：[1]湖北师范学院城市与环境学院,湖北黄石435002 [2]污染物分析与资源化技术湖北省重点实验室,湖北黄石435002 [3]湖北师范学院化学化工学院,湖北黄石435002

出　　处：《印染助剂》2016年第2期41-46,共6页Textile Auxiliaries

基　　金：污染物分析与源资化技术湖北省重点实验室开放基金项目(KL2013G04)

摘　　要：研究了花生壳的改性及改性花生壳对酸性品红的吸附。结果表明,花生壳的最佳改性条件为:室温下,花生壳与0.04 mol/L高锰酸钾的固液比为1∶5,改性30 min;改性花生壳的最佳吸附条件为:室温下,于100 m L酸性品红质量浓度为30 mg/L、p H=2的水样中,投加90 mesh筛下改性花生壳0.7 g,吸附60 min。该条件下,酸性品红的脱色率为93.10%,稀释倍数为40倍,低于《污水综合排放标准》(GB 8978-1996)中的一级标准;从实际应用的角度出发,投加量为0.5 g/100 m L时,脱色率达到79.66%,稀释倍数为60倍,达到《污水综合排放标准》(GB 8978-1996)中二级排放标准;改性花生壳对酸性品红的吸附与Freundlich相关方程的拟合程度很高。The modification of peanut shells and the adsorption of acid fuchsin on modified peanut shells were investigated. The results showed that the optimum modification conditions were as follows： the solid-liquid ratio of peanut shells and 0.04 mol/L potassium permanganate was 1∶5, and the modification time was 30 min. The optimum adsorption conditions of modified peanut shells were as follows： 0.7 g modified peanut shells selected with size of 90 mesh were dispersed in 100 m L of acid fuchsin solution with concentration of30 mg/L at p H=2 for 60 min. The highest acid fuchsin decolorization rate was 93.10% under such conditions.The residual fuchsin solution in the suspension was calculated as dilution multiples of 40 times, which was lower than the class A of ＂integrated wastewater discharge standard＂（GB 8978-1996）. From the practical application, when the concentration of peanut shells was 0.5 g/100 m L, decolorization rate was 79.66%, and the residual fuchsin solution in the suspension was calculated as dilution multiples of 60 times, which was up to the class B of ＂integrated wastewater discharge standard＂（GB 8978-1996）. Isothermal adsorption experiments showed that the kinetic for adsorption of acid fuchsin on modified peanut shells correlated well with Freundlich equation.

关 键 词：花生壳 改性 酸性品红 吸附 

分 类 号：TQ610.9[化学工程—精细化工] X788[环境科学与工程—环境工程]