文档介绍：Treatment of dye wastewater by bentonite adsorption and catalysis
Yuqi Sun1, Jianfeng Ma2*, Dinglong Li2
1. Beijing City University, 2. Jiangsu Polytechnic University
Beisihuan Zhonglu, Haidian District, Changzhou, China 213164
Beijing, China 100083 *Corresponding to: Email: ******@zju.
Abstract-The methylene blue dye wastewater was treated effective adsorbents including the modified clays. The
by various amount of hydroxyl Fe modified bentonite, then, effectiveness of adsorption for dye removal from
the dye was oxidized by the bentonite with the Fe catalysis. wastewaters has made these low cost adsorbents an ideal
As a result the modified bentonite was regenerated and alternative to other expensive treatment options.
could be recycled in adsorption. Ultrasound and hydrogen Bentonite, a very rich clay mineral, consists of
peroxide have synergistic action on degradation of layers of two tetrahedral silica sheets sandwiching one
methylene blue for OH-Fe-bentonites’ regeneration. The octahedral alumina sheet. Recently, bentonite
adsorption of dye and the influencing factors had been modification has been focused on some modification
investigated, such as the amount of hydrogen peroxide and methods such as acid activation, anic anic
ferrous percentage of OH-Fe-bentonites. The results pillaring. It was found that all these modification
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