采用甘蔗渣分别成功制得草酸条件下的甘蔗渣基水热炭(OBC)和硫酸条件下的蔗渣基水热炭(SBC),研究草酸和硫酸2种酸性条件下甘蔗渣水热炭对模拟废水中的六价铬离子[Cr(Ⅵ)]的吸附效果。制得的OBC、SBC的BET比表面积分别为19.5767m2/g、20.086m2/g,总孔容分别为0.108316cm3/g、0.158686cm3/g,平均孔径分别为22.1316nm、31.6004nm,具有较好的孔隙结构。在Cr(Ⅵ)溶液pH＝2.0,浓度为50mg/L,SBC用量为0.7g,吸附时间为90min条件下,SBC对Cr(Ⅵ)的去除率最高达到99.8%,具有较好的去除效果。
Bagasse-based hydrothermal charcoal (OBC) under oxalic acid conditions and bagasse-based hydrothermal charcoal (SBC) under sulphuric acid conditions were successfully prepared from bagasse,and the water-carbon charcoal simulation of sugarcane bagasse under oxalic acid and sulfuric acid conditions was studied.The adsorption effect of six-membered ions [Cr(Ⅵ)] in wastewater.The prepared OBC and SBC had BET specific surface area of 19.5767m2/g and 20.086m2/g,respectively.The total pore volume were 0.108316cm3/g,0.158686cm3/g,and the average pore diameter were 22.1316nm and 31.6004nm,respectively.The pore structure was good.The chromium (ⅵ) solution had pH of 2.0,the concentration was 50mg/L,SBC dosage was 0.7g,and adsorption time of 90 minutes.The removal rate of chromium (vi) by SBC was up to 99.8%,which was better removal.
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基金资助
江西省科技支撑计划项目(20161BBF60060);江西省自然科学基金(20151BAB207009)
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