摘要
研究了8-羟基喹啉螯合树脂(PS-HQ)对溶液中Cr6+的吸附特性,研究内容包括pH、吸附温度等对吸附的影响。结果表明:PS-HQ能有效地除去水溶液中的Cr6+。在pH3.0~6.0的HAc-NaAc缓冲体系中,PS-HQ对溶液中的Cr6+均有较大的吸附能力,最佳的吸附酸度为pH4.0;吸附温度升高,吸附量增大,说明吸附是吸热过程;Freundlich和Langmuir等温吸附模型能较好地描述吸附过程;用硝酸、去离子水对吸附后的树脂进行再生试验,树脂的吸附能力可恢复到原来的93%~96%以上。8-羟基喹啉螯合树脂可作为理想的除Cr6+吸附的材料。
In this paper, The adsorption characteristic of the chelating resin containing 8-Hydroxyquinaldine （PS-HQ）for Cr^6＋ was studied in aqueous solution.The studied parameters include pH,adsorption temperature.The results showed that PS-HQ could effectively remove chromium from aqueous solution.It had high adsorption ability for Cr^6＋ from aqueous solution.The PS-HQ showed high adsorption ability for chromium at a wide pH range （pH3.0～6.0）,the optima adsorption acidity of PS-HQ for Cr^6＋ is pH 4.0 in HAc-NaAc medium.Adsorption increased with increases in adsorption temperatures.It means that the sorption process is an endothermic process.The adsorption behavior of PS-HQ for Cr^6＋obeys the Freundlich and Langmuir isotherm model.After adsorption the resin can be regenerated with nitrate acid and demonized water,the regeneration ratio reach upwards of 93 ～96%. PS-HQ is the better absorptive material removing Cr^6＋ from aqueous solution,reach upwards of 93%～96%.PS-HQ is the better absorptive material removing Cr^6＋ from aqueous solution.
出处
《昆明冶金高等专科学校学报》
CAS
2014年第3期85-88,共4页
Journal of Kunming Metallurgy College
