挺水植物生物炭对硫丹的吸附及催化水解作用

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Abstract Six kinds of biochars derived from typically wetland plants were pyrolyzed under 550℃ without oxygen,the adsorption and catalytic hydrolysis behavior of these biochars towards endosulfan were investigated.The results showed that the ash contents were higher than other agricultural wastes,rangeing from 10.88% to 31.11%.The results of characterization suggested that the biochars had a mass of aromatic domains and pores on the surface of biochars.The pores were mainly mesopores and partly fragmented.All the biochars have high adsorption capacity toward endosulfan.The adsorption was mainly occurred on the surface of biochars which contained dense organic matter.Hydrophobic,diffusion and distribution effects played significant role in the process of adsorption.Under the conditions of neutral or alkali solutions,CAI-B,ACC-B and THD-B could efficiently remove endosulfan with uptake rates of 96.77% to 98.57%.Moreover,biochar could catalyze the hydrolysis of endosulfan with an increase of hydrolysis efficiency about 16.57%~72.57% under the condition of neutral solution.

Key words： biochar endosulfan catalytic hydrolysis aromatic functional group

Received: 23 August 2017

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	Articles by authors
	HE Qi
	CAO Feng-mei
	LU Shao-yong
	CHEN Fang-xin
	CAI Chun-lun

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HE Qi,CAO Feng-mei,LU Shao-yong等. Adsorption and catalytic hydrolysis of endosulfan on biochars derived from emergent plants[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 1126-1132.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/1126

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