A robust acid-resistant chelating polymer for enhanced stabilization of lead ions in fly ash-Reference-Cited by-同舟云学术

A robust acid-resistant chelating polymer for enhanced stabilization of lead ions in fly ash

Published:2024-05-23 Issue:1 Volume:18 Page:
ISSN:2661-801X
Container-title:BMC Chemistry
language:en
Short-container-title:BMC Chemistry

Author:

Wang Qi,Yan Huiyu,Yao Linyan,Guo Ying,Xiao Jianxi

Abstract

AbstractFly ash derived from municipal solid waste incinerators (MSWIs) harbors significant quantities of heavy metals with high leaching toxicity, resulting in detrimental environmental effects. Pb2+ in fly ash is the ion most likely to exceed permissible levels. However, chemical stabilization methods demonstrate poor efficacy in stabilizing Pb2+ under acidic conditions. Herein, we have developed a robust acid-resistant chelating polymer (25DTF) for enhanced stabilization of Pb2+ in fly ash. 25DTF was synthesized through the reaction of formaldehyde with 2,5-dithiourea. 25DTF exhibited remarkable chelation efficiency, nearing 100%, for Pb2+ in fly ash. 25DTF demonstrated exceptional chelation efficiency, surpassing 99.9%, when interacting with Pb2+ in fly ash at pH ≤ 7. Even under acidic conditions, 25DTF effectively prevented the secondary dissolution of Pb2+. Additionally, it indicated outstanding Pb2+ chelation efficiency across diverse regions of China. The 25DTF chelating agent shows considerable potential in alleviating metal ion contamination in soil, wastewater, and urban environmental management, thereby fostering advancements in environmental stewardship.

Funder

the National Natural Science Foundation of China

Natural Science Foundation of Gansu Province

Publisher

Springer Science and Business Media LLC

Link

https://link.springer.com/content/pdf/10.1186/s13065-024-01209-z.pdf

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