摘要
为了研究柠檬渣对污水中铬(Ⅵ)的吸收工艺,用10%的H2SO4对柠檬渣进行了改性,比较了改性柠檬渣与原柠檬渣的吸附性能,并利用单因素法,考察了吸附剂的量、反应时间、反应温度、溶液的pH和恒温振荡器的振速对吸附效果的影响。结果表明,改性柠檬渣的吸附性能要优于原柠檬渣;在一定条件下,改性柠檬渣与污水的适宜液固比为10 g/L;改性柠檬渣与原料柠檬渣的适宜反应时间为90 min;改性柠檬渣的反应温度为45℃;溶液的适宜pH为4;改性柠檬渣与原柠檬渣的恒温振荡器的振速分别取150 r/min和100 r/min。
To study the adsorption process of Cr（Ⅵ） in sewage, lemon slag was modified by 10% H2SO4, then the adsorp-tion capability of modified lemon slag and original lemon slag were compared. The effects of absorbent dosage, adsorption time, temperature, pH and oscillator vibration velocity were investigated by single factor method. The results showed that the adsorption properties of modified lemon slag were better than the original slag. Under certain conditions, the suitable ratio of solid to liquid （ m modified lemon slag to Vsewage ） was 10g/L. The best reaction time of the modified lemon slag and the original slag was both 90 min; and the oscillator vibration velocity was 150 r/min and 100 r/min,respectively. The best reac-tion temperature of the modified lemon slag was 45 ℃; and the pH of the liquor was 4.
出处
《湖北农业科学》
2015年第17期4177-4180,共4页
Hubei Agricultural Sciences
基金
2013年度四川省大学生创新创业训练计划项目(201310640012)
2013年四川省教育厅重点资助项目(13ZA0002)
