Simultaneous recovery and retention of fluoride resources using esterified cellulose filter papers loaded with environmentally friendly calcium and magnesium extracted from seawater

Kun Qin,Ci-Jing Hung, Yasi Liao, Chia-Ching Kuan,TsingHai Wang,Chung-Yu Guan,Ching-Lung Chen

Separation and Purification Technology（2023）

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摘要

•Mining seawater Ca2+ and Mg2+ for recovering F- was proposed.•This was achieved through the high affinity between carboxyl and Ca2+/Mg2+.•The CaF2/MgF2 colloids were recovered and retained by the filter papers.•Additional flocculation was avoided.

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关键词

Esterification, Cellulose filter paper, Circular economy, Green seawater mining, Fluoride reclamation

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