A comparative study on phosphate removal from water using Phragmites australis biochars loaded with different metal oxides | Zendy

Pengfei Wang | Zendy; Mengmeng Zhi | Zendy; Guannan Cui | Zendy; Zhaosheng Chu | Zendy; Shuhang Wang | Zendy

Open Access

A comparative study on phosphate removal from water using Phragmites australis biochars loaded with different metal oxides

Author(s) -

Pengfei Wang,

Mengmeng Zhi,

Guannan Cui,

Zhaosheng Chu,

Shuhang Wang

Publication year - 2021

Publication title -

royal society open science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.84

H-Index - 51

ISSN - 2054-5703

DOI - 10.1098/rsos.201789

Subject(s) - phragmites , phosphate , metal , environmental chemistry , environmental science , wetland , chemistry , ecology , materials science , biology , metallurgy , organic chemistry

Metal oxide-loaded biochars are a promising material to remove phosphate from polluted water to ultra-low concentrations. To facilitate preparing the metal oxide-loaded biochar with the best phosphate adsorption performance, five biochars loaded with Al, Ca, Fe, La and Mg oxides, respectively (Al-BC, Ca-BC, Fe-BC, La-BC and Mg-BC) were produced using Phragmites australis pretreated with 0.1 mol AlCl 3 , CaCl 2 , FeCl 3 , LaCl 3 and MgCl 2 , respectively, characterized, and phosphate adsorption kinetics and isotherms of the biochars were determined. The maximum phosphate adsorption capacities ( Q m ) of the biochars ranked as Al-BC (219.87 mg g −1 ) > Mg-BC (112.45 mg g −1 ) > Ca-BC (81.46 mg g −1 ) > Fe-BC (46.61 mg g −1 ) > La-BC (38.93 mg g −1 ). The time to reach the adsorption equilibrium ranked as La-BC (1 h) < Ca-BC (12 h) < Mg-BC (24 h) = Fe-BC (24 h)

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