Robust and recyclable sodium carboxymethyl cellulose-ammonium phosphomolybdate composites for cesium removal from wastewater

Ningluo Zhang; Shangqing Chen; Jiayin Hu; Jian Shi; Yafei Guo; Tianlong Deng

doi:10.1039/c9ra09803h

Robust and recyclable sodium carboxymethyl cellulose-ammonium phosphomolybdate composites for cesium removal from wastewater

RSC Adv. 2020 Feb 7;10(11):6139-6145. doi: 10.1039/c9ra09803h.

Authors

Ningluo Zhang¹, Shangqing Chen¹, Jiayin Hu¹, Jian Shi¹, Yafei Guo¹, Tianlong Deng¹

Affiliation

¹ Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology Tianjin 300457 China hujiayin@tust.edu.cn tldeng@tust.edu.cn.

Abstract

A novel, facilely prepared, recyclable sodium carboxymethyl cellulose-ammonium phosphomolybdate composite (CMC-AMP) was synthesized by chemical cross-linking and used for Cs⁺ removal. The effects of adsorbent dosage, pH value, initial Cs⁺ concentration, contact time, temperature and competitive ions on adsorption were investigated. The results showed that CMC-AMP with good mechanical properties could effectively adsorb Cs⁺ in a wide pH range. In addition, the adsorption process of CMC-AMP was better fitted with the Lagergren first-second model and Langmuir isotherm model. Furthermore, CMC-AMP can be reused five times using ammonium chloride as the eluent without an obvious decrease in absorption activity. The results reveal that CMC-AMP can be used as a low cost and recyclable Cs⁺ adsorbent.