摘要
采用活性炭吸附耦合过氧化氢氧化法去除氟硅酸中的氯。通过单因素实验和正交实验研究固液比(活性炭与氟硅酸溶液质量比)、30%H_(2)O_(2)用量、温度以及吸附时间对氟硅酸溶液中氯离子去除的影响。结果表明:当固液比为1∶1.87,H_(2)O_(2)用量为4%,吸附时间为35 min,室温时,进行单级氧化吸附,氯离子去除率为55.83%。当固液比为1∶5,H_(2)O_(2)用量为3%,吸附时间为60 min,室温时,进行四级氧化吸附,氯离子去除率达83.43%。采用纯水清洗法进行活性炭再生,活性炭再生5次后,仍有较好的氯离子去除效果。
The chlorine in fluorosilicic acid was removed by activated carbon adsorption coupled with hydrogen peroxide oxidation.The effects of solid-liquid ratio(mass ratio of activated carbon to fluorosilicic acid solution),30%H_(2)O_(2)dosage,temperature and adsorption time on the removal of chloride ions in fluorosilicic acid solution were studied by single factor experiment and orthogonal experiment.The results showed that when the solid-liquid ratio was 1∶1.87,the amount of H_(2)O_(2)was 4%,the adsorption time was 35 min,and the single-stage oxidation adsorption was performed at room temperature,the chloride ion removal rate was 55.83%.When the solid-liquid ratio was 1∶5,the amount of H_(2)O_(2)was 3%,the adsorption time was 60 min,and the four-stage oxidation adsorption was performed at room temperature,the removal rate of chloride ions reached 83.43%.The activated carbon was regenerated by pure water cleaning method.After five times of regeneration,the activated carbon still had good chloride ion removal effect.
作者
李潇
隋岩峰
李白玉
朱静
刘松林
李天祥
LI Xiao;SUI Yanfeng;LI Baiyu;ZHU Jing;LIU Songlin;LI Tianxiang(School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;State Key Laboratory of Green and Efficient Development of Phosphorus Resources,Guiyang 550016,China;Wengfu Technology Research Institute,Guiyang 550016,China)
出处
《应用化工》
北大核心
2025年第8期2043-2048,2055,共7页
Applied Chemical Industry
基金
贵州省科学技术基金项目(黔科合支撑[2017]2317)。
关键词
活性炭
过氧化氢
氟硅酸
氯离子
再生
activated carbon
hydrogen peroxide
fluorosilicic acid
chloride ion
regeneration
