摘要
利用海藻酸钠和氯化钙的凝胶化,包埋制备有机凹凸棒土颗粒(GOAT)吸附剂,通过批量实验考察了制备的吸附剂对水中亚甲基蓝(MB)、刚果红(CR)的吸附行为。实验结果表明,GOAT对MB和CR的吸附行为都更符合准二级吸附动力学方程,吸附等温线符合Langumir方程。吸附量的大小与溶液的初始p H值有关,且增加盐浓度,GOAT的吸附能力增加。
In this paper,the granule organo-attapulgite adsorbent（ GOAT） was prepared by the sol-gel transition property of sodium alginate and calcium chloride. The adsorption of methylene blue（ MB） and Congo red（ CR） from aqueous solution onto GOAT was investigated using batch experiment. The results revealed that adsorption of MB and CR to GOAT fitted well with the pseudo-second order kinetics equation,adsorption isotherm fitted better with the Langmuir model. The initial p H value of the solution had significant impact on the amount of adsorption,and the adsorption capacity of the modified sawdust increased with the increase of salt concentration.
出处
《工业安全与环保》
北大核心
2016年第12期59-62,共4页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(21507060
51308284)
关键词
凹凸棒土颗粒
吸附
亚甲基蓝
刚果红
granular organo-attapulgite
adsorption
methylene blue
Congo red
