Open AccessEfficient removal of Cr(VI) from wastewater using magnetically separable poly(m-phenylenediamine) particles
Author(s) -
Z W Chen,
Zhenhuan Zhou,
Kun You,
Zha Zhong,
J Zhang,
Q L Li
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/344/1/012126
Subject(s) - adsorption , hexavalent chromium , chromium , polymer , polymerization , wastewater , materials science , nuclear chemistry , chemistry , chemical engineering , metallurgy , organic chemistry , waste management , engineering
The magnetic polymer adsorbent Fe 3 O 4 @poly (m-phenylenediamine) (Fe 3 O 4 @PmPD) was formed at room temperature (25°C) by chemical oxidative polymerization using Fe 3 O 4 and m -phenylenediamine (mPD). The effects of the Na 2 CO 3 concentration and Fe 3 O 4 mass used in the synthesis on the adsorption capacity were studied. The effects of contact time, initial concentration and temperature on adsorption were individually analyzed. The equilibrium data were evaluated by kinetic and thermodynamic models. The highest adsorption capacity of the material was 654.4 mg/g at room temperature and pH=2. Finally, the recyclability of the materials was tested by cycling experiments. The material could be recycled and retained 73.18% of its initial adsorption capacity after 5 cycles. The magnetic polymer material exhibits excellent hexavalent chromium removal capacity and broad application prospects in the treatment of chromium-containing wastewater.