磷酸
吸附
离子强度
吸热过程
稻草
化学
活性炭
碳纤维
朗缪尔吸附模型
多孔性
化学工程
四环素
水溶液
核化学
无机化学
材料科学
有机化学
生物化学
复合数
复合材料
工程类
抗生素
作者
Qi‐Liang Yang,Pingxiao Wu,Juan Liu,Saeed Rehman,Zubair Ahmed,Bo Ruan,Nengwu Zhu
标识
DOI:10.1016/j.envres.2019.108899
摘要
In this work, corn straw (CS) based porous carbon was prepared by one-step phosphoric acid (H3PO4) low temperature activation. The impregnation ratios (H3PO4/CS, g/g) played an important role in the pore development. ACS300-1 engineered at 300 °C and the impregnation ratio of 1.0 showed the maximal specific surface area of 463.89 m2/g with total pore volume of 0.387 cm3/g, attaining a high tetracycline (TC) uptake of 227.3 mg/g. The adsorption of TC onto ACS300-1 was found tolerant with wide pH (2.0-10.0) and high ionic strength (0 - 0.5 M). The adsorption data can be fitted well by the pseudo-second order kinetic model and Langmuir isotherm model. The endothermic and spontaneous properties of the adsorption system was implied by Thermodynamic study. The findings of the current work conclude that one-step H3PO4 activation is a green and promising method for corn straw based porous carbon that may be found with great potentials in antibiotic containing wastewater treatment.
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