蓝藻生物炭的制备及对过硫酸盐的活化效能

doi:10.11934/j.issn.1673-4831.2017.12.011

Abstract

Abstract:

Biochar was prepared out of cyanobacteria and used as activator of persulfate in degrading Orange G. Effects of biochar preparation conditions on element composition, pore structure and persulfate activation performance of biochar were investigated. Orange G degradation process of the biochar-persulfate system and its influencing factors were studied. Results show that the biochar prepared out of H₃PO₄ treated cyanobacteria was higher in carbon content, less developed in pore structure and better in persulfate activation performance than that out of NaOH treated cyanobacteria. Higher pyrolysis temperature could improve activation performance of the biochar. The biochar obtained at 500℃ out of H₃PO₄ treated cyanobacteria (CHB500) exhibited excellent activation performance. CHB500/persulfate system could efficiently degrade or remove Orange G in solutions with pH varying in the range from 2.7 to 10.7 with radical and non-radical mechanisms playing a joint role.

Key words: cyanobacteria, biochar, persulfate, Orange G

CLC Number:

X703.1

SHI Chen-fei, LI Yu-meng, FENG Rui-jie, JIA Shu-min, XUE Rui-jie, WANG Guo-xiang. Preparation of Biochar From Cyanobacteria and Function of the Biochar for Persulfate Activation[J]. Journal of Ecology and Rural Environment, 2017, 33(12): 1140-1145.

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Preparation of Biochar From Cyanobacteria and Function of the Biochar for Persulfate Activation

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