Abstract:The absorption effect of the palygorskite clay sludge (obtained from the sodium lignosulfonate wastewater) and acid-treated palygorskite (1mol/L HCL) was investigated, methylene blue in aqueous solution as an adsorbate. The structure and surface electricity-performance of two types of adsorbents were characterized by transmission electron microscopy (TEM), FT-IR spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XRD) and zeta potential. The results showed that the maximum adsorption capacities of palygorskite clay sludge and acid-treated palygorskite were 98.7mg/g and 97.50mg/g at 30℃, respectively. When the palygorskite clay sludge was selected as the adsorbent, the absorption process was spontaneous endothermic, the adsorption isotherms followed Langmuir equation, and the dynamic data fitted pseudo-second order kinetic model well.
高淑玲, 杨翠玲, 罗鑫圣, 周鹏鑫, 张哲. 坡缕石黏土污泥对水相中亚甲基蓝吸附研究[J]. 中国环境科学, 2014, 34(1): 78-84.
GAO Shu-Ling, YANG Cui-Ling, LUO Xin-Sheng, ZHOU Peng-Xin, ZHANG Zhe. Study on methylene-blue adsorption from water phase by palygorskite clay sludge. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(1): 78-84.