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Preparation of fluoride adsorbent by resource utilization of carbide slag from industrial waste

  • Yuanchuan Ren
  • , Jia Tong
  • , Guangfei Qu
  • , Ping Ning
  • , Nanqi Ren
  • , Chaoneng Zhang
  • , Fenghui Wu
  • , Yuyi Yang
  • , Xiuping Chen
  • , Zuolian Wang
  • , Yan Hu
  • , Jun Wang
  • , Ping Lu
  • Kunming University of Science and Technology
  • National Regional Engineering Research Center-NCW
  • School of Environment, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A high performance fluoride adsorbent was prepared for the removal of fluoride from industrial wastewater by calcination and polyacrylic acid impregnation. Through batch experiments, the removal capacity of the adsorbent for fluorine and the influence of key factors (calcination temperature, dosage of polyacrylic acid, pH, initial fluorine concentration and dosage of adsorbent) on the efficiency of the adsorbent for fluoride removal was investigated. The maximum adsorption capacity and removal of efficiency were 98.61 mg/g and 98.7%, respectively. The adsorption kinetics and isotherm studies showed that the pseudo second order model and Langmuir isotherm model fitted this adsorption process better. Moreover, the mechanism of F- removal by CS, C-CS, PAA@C-CS were further analyzed by SEM, EDS, XRD and FTIR. F- in wastewater were found to be adsorbed on the surface of adsorbent through electrostatic interaction, ion exchange and surface coordination. Recovery is achieved by desorption of the adsorbent material by NaOH (0.1 M). As a highly resourced and eco-friendly adsorbent for removal of F- from industrial wastewater, PAA@C-CS has a promising application for controlling industrial water pollution.

Original languageEnglish
Article number108632
JournalJournal of Environmental Chemical Engineering
Volume10
Issue number6
DOIs
StatePublished - Dec 2022
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 12 - Responsible Consumption and Production
    SDG 12 Responsible Consumption and Production
  2. SDG 13 - Climate Action
    SDG 13 Climate Action

Keywords

  • Adsorption
  • Fluoride
  • Industrial solid waste
  • Industrial waste water
  • Resource utilization

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