Lignin-derived porous carbon loaded with La(OH)3 nanorods for highly efficient removal of phosphate

Liu, Xiaohuan and Zong, Enmin and Hu, Weijie and Song, Pingan and Wang, Jifu and Liu, Qingchun and Ma, Zhongqing and Fu, Shenyuan (2018) Lignin-derived porous carbon loaded with La(OH)3 nanorods for highly efficient removal of phosphate. ACS Sustainable Chemistry and Engineering, 7 (1). pp. 758-768. ISSN 2168-0485


Removing phosphate ions from eutrophic waters is of paramount importance; however, the design of low-cost, high-performance adsorbents for phosphorus removal has remained a huge challenge. Herein, we have demonstrated the fabrication of a low-cost, eco-friendly absorbent, LPC@La(OH)3, by loading lanthanum hydroxide nanorods within lignin-derived porous carbon for superfast and highly efficient phosphorus removal. As-prepared LPC@ La(OH)3 exhibits a high adsorption capacity of 60.24 mg PL−1 and a high lanthanum usage efficiency. Our results show an ultrafast removal of up to 99.5% phosphate in 10 min when the initial concentration is 2 mg P L−1. Moreover, LPC@La(OH)3 can efficiently reduce the phosphate concentration to meet the below U.S. Environmental Protection Agency limits (50 μgPL−1) for eutrophication prevention. More importantly, it shows a high phosphate absorption ability over the wide range of pH 3−7, in addition to a high adsorption selectivity toward phosphate and high stability during adsorption process. Both the chemical precipitation and the ligand exchange are mainly responsible for the phosphate removal by LPC@La(OH)3. As-designed lignin-derived, ecofriendly, high-performance LPC@ La(OH)3 shows enormous potential for the phosphate removal from both municipal wastewater and industrial effluents.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 18 Feb 2019 05:43
Last Modified: 20 Feb 2019 11:40
Uncontrolled Keywords: lignin, porous carbon, lanthanum(III), nanocomposite, phosphate
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8299 Other Plant Production and Plant Primary Products > 829999 Plant Production and Plant Primary Products not elsewhere classified
Identification Number or DOI: 10.1021/acssuschemeng.8b04382

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