摘要
研究了CH-90阳离子交换树脂对PTA模拟废水及工业废水中Co^(2+)、Mn^(2+)的吸附性能,考察了不同pH、CH-90树脂的质量浓度、接触时间对树脂吸附性能的影响。结果表明,当pH=3.5、CH-90树脂的质量浓度为2.0g/L时,CH-90树脂对模拟废水中Co^(2+)、Mn^(2+)去除率达到最佳,最大吸附量分别为55.4、50.5mg/g,其吸附过程符合准二级动力学描述。而在工业废水中,由于有机物的大量存在及pH的影响,最合适的CH-90树脂的质量浓度为24g/L。吸附后的树脂在强酸中脱附,能够重复再生15次以上,降低树脂的使用成本。
The adsorption of Co^2＋ and Mn^2＋ in both simulated and industrial PTA wastewater by CH-90 cation exchange resin was investigated.Different parameters including the pH value,contact time and dosage on the adsorption performance were conducted.The optima adsorption capacity in simulated wastewater was obtained under the condition of pH=3.5 and 2 g/L dosage,and the maximum adsorption capacities were 55.4 mg/g,50.5 mg/g for Co（II）and Mn（II）respectively.While in industrial wastewater the optima dosage reached high up to 24 g/L likely due to the interference of concentrated COD and the unfavorable pH value.The adsorption kinetics data were analyzed which followed the pseudo-second-order kinetics model.It was shown that the CH-90 resin could be regenerated in strong acid solution and then reused for more than 15 times,which therefore greatly reduced the use-cost.
出处
《石油化工高等学校学报》
CAS
2017年第5期1-5,共5页
Journal of Petrochemical Universities
基金
国家重点基础研究发展计划青年科学家专题项目(2014CB748500)
上海市浦江人才计划项目(16PJD019)
关键词
Co2+
Mn2+
离子交换树脂
废水处理
Co^2＋
Mn^2＋
simulated
industrial PTA
wastewater
CH-90 cation exchange resin
investigated
