Macroporous calcium alginate aerogel as sorbent for Pb2+ removal from water media. Issue 3 (September 2016)

• Record Type: Journal Article
• Authors: Wang, Zhuqing; Huang, Yaoge; Wang, Min; Wu, Genhua; Geng, Tongmou; Zhao, Yingguo; Wu, Aiguo
• Is Part Of: Journal of environmental chemical engineering. Volume 4:Issue 3(2016:Sep.)
• Page Start: 3185
• Page End: 3192
• Publication Date: 2016-09
• Subjects: Sorbent -- Lead ion -- Aerogel -- Alginate -- Adsorption; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2016.06.032
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: A low-cost and environmentally friendly calcium alginate aerogel (CAA) was prepared by freeze-drying method, characterized, and evaluated for removal of Pb 2+ from water. Experimental results indicate that the CAA shows high selectivity and adsorption capacity for Pb 2+ . Relative selectivity coefficients for Pb 2+ over other metal ions are all over 10. The CAA can also adsorb 96.4% of Pb 2+ in aqueous solution. The maximum adsorption capacity of CAA for Pb 2+ is 390.7 mg/g, which is higher than that of other reported adsorbents. Moreover, the CAA can be regenerated by simple acid treatment and used repeatedly without loss in performance.