摘要
以KMnO4改性玉米芯为吸附剂来吸附溶液中的铀,并与未改性玉米芯的吸附能力进行比较。考察了玉米芯用量、溶液pH值、铀初始质量浓度以及吸附时间等因素对铀吸附效果的影响。实验结果表明,当溶液pH=5.5、改性玉米芯用量为0.12 g、未改性玉米芯用量为0.2 g、铀初始质量浓度为30 mg/L、接触时间为2.5 h时,改性玉米芯对铀的去除率为93.54%,未改性玉米芯对铀的去除率为59.68%,改性玉米芯对铀的吸附效果明显优于未改性玉米芯。
The corncob modified with KMnO4 was used to adsorb uranium from aqueous solution, the adsorption capacity on uranium was compared with unmodified corncob. The influences of contact time, solution pH, adsorbent concentration and initial uranium concentration were investigated. The optimal conditions were found to be 2.5 h of contact time,pH=5.5,30 mg/L of initial uranium concentration, 0.12 g of modified corncob and 0.2 g of unmodified corncob in 100 mL solution,the removal rates reached 93.54% and 59.68%, respectively. The modified corncob had better adsorption capacity on uranium than unmodified corncob.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第7期2429-2432,共4页
Chinese Journal of Environmental Engineering
基金
国防科工局核能开发项目(科工二司[2011]524号)
国家自然科学基金资助项目(11205030
41201500)
核资源与环境省部共建国家重点实验室培育基地项目(101111)
放射性地质勘探与技术国防重点学科实验室项目(2011RGET06
RGET1220)
关键词
高锰酸钾
改性
玉米芯
铀
吸附
potassium permanganate
moditication
corncob
uranium
adsorption
