TY - JOUR
T1 - Recent advances in adsorption and coagulation for boron removal from wastewater
T2 - A comprehensive review
AU - Lin, Jui Yen
AU - Mahasti, Nicolaus N.N.
AU - Huang, Yao Hui
N1 - Funding Information:
The authors would like to thank the Ministry of Science and Technology, Taiwan for financially supporting this research under Contract No. MOST 108-2622-E-006-003-CC2 and 109-2622-E-006-028-CC2 .
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/4/5
Y1 - 2021/4/5
N2 - The anthropogenic emission of boron to river has become a serious problem that deteriorates the water quality and endangers the ecosystem. Although boron is a micronutrient, it is toxic to plants, animals and humans upon exposure. In this review, we first present the sources of the boron-containing streams and their composition, and then summarize the recent progress of boron removal methods based on adsorption and coagulation systematically. The boron-spiked streams are produced from coal-fired and geothermal power plants, the manufacturing and the activities of oil/gas excavation and mining. The adsorbents for boron removal are classified into the ones functionalized by chelating groups, the ones on the basis of clays or metal oxide. Three subgroups reside in the coagulation approach: electrocoagulation, chemical precipitation and chemical oxo-precipitation. The hybrid technology that combines membrane process and adsorption/coagulation was covered as well. To provide a comprehensive view of each method, we addressed the reaction mechanism, specified the strength and weakness and summarized the progress in the past 5 years. Ultimately, the prospective for future research and the possible improvement on applicability and recyclability were proposed.
AB - The anthropogenic emission of boron to river has become a serious problem that deteriorates the water quality and endangers the ecosystem. Although boron is a micronutrient, it is toxic to plants, animals and humans upon exposure. In this review, we first present the sources of the boron-containing streams and their composition, and then summarize the recent progress of boron removal methods based on adsorption and coagulation systematically. The boron-spiked streams are produced from coal-fired and geothermal power plants, the manufacturing and the activities of oil/gas excavation and mining. The adsorbents for boron removal are classified into the ones functionalized by chelating groups, the ones on the basis of clays or metal oxide. Three subgroups reside in the coagulation approach: electrocoagulation, chemical precipitation and chemical oxo-precipitation. The hybrid technology that combines membrane process and adsorption/coagulation was covered as well. To provide a comprehensive view of each method, we addressed the reaction mechanism, specified the strength and weakness and summarized the progress in the past 5 years. Ultimately, the prospective for future research and the possible improvement on applicability and recyclability were proposed.
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U2 - 10.1016/j.jhazmat.2020.124401
DO - 10.1016/j.jhazmat.2020.124401
M3 - Review article
C2 - 33280939
AN - SCOPUS:85097370029
SN - 0304-3894
VL - 407
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
M1 - 124401
ER -