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 ORCID: https://orcid.org/0000-0003-1082-652X 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


Abstract

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/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 18 Feb 2019 05:43
Last Modified: 04 Feb 2021 04:43
Uncontrolled Keywords: lignin, porous carbon, lanthanum(III), nanocomposite, phosphate
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objectives (2008): 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: https://doi.org/10.1021/acssuschemeng.8b04382
URI: http://eprints.usq.edu.au/id/eprint/35550

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