摘要
以氧化后的废纸为交联剂固定废弃农作物中的柿单宁,采用“以废治废”的方法吸附水中的铀(Ⅵ)。通过间歇法来考察柿单宁改性废纸(DAWP-PT)在不同pH、不同时间和不同转速下对铀(Ⅵ)的吸附量。结果表明,DAWP-PT对铀(Ⅵ)的吸附符合Langmuir和准二级动力学模型,为自发吸热熵增的吸附过程。DAWP-PT有望为含铀废水的治理提供一种全新的高效、无污染、低成本的吸附剂。
The oxidized waste paper was used as cross-linking agent to fix persimmon tannin in crops, and U(Ⅵ) in water was adsorbed by the method of “waste to waste”.The adsorption capacity of uranium(Ⅵ) on persimmon tannin modified by waste paper(DAWP-PT) at different pH value, adsorption time and rotation speed was investigated by intermittent method.The results show that adsorption of DAWP-PT on uranium(Ⅵ) conforms to Langmuir and quasi-second-order kinetic model, and it is an adsorption process with spontaneous endothermic entropy increase.DAWP-PT is expected to provide a new adsorbent with high efficiency, no pollution and low cost for the treatment of uranium-containing wastewater.
作者
赵毅
樊小磊
孙占学
ZHAO Yi;FAN Xiao-lei;SUN Zhan-xue(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China;School of Water Resource and Environmental Engineering,East China University of Technology,Nanchang 330013,China;Jiangxi Bureau of Geology,Nanchang 330001,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2023年第1期125-130,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(41362011,21201033)。
关键词
柿子单宁
废纸
铀(Ⅵ)
吸附
persimmon tannin
waste paper
U(Ⅵ)
adsorption
