Unlocking the potential of magnetic biochar in wastewater purification: a review on the removal of bisphenol A from aqueous solution
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Date
2024-03-23
Journal Title
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Volume Title
Publisher
Environ Monit Assess
Abstract
Bisphenol A (BPA) is an essential and
extensively utilized chemical compound with significant
environmental and public health risks. This
review critically assesses the current water purification
techniques for BPA removal, emphasizing the
efficacy of adsorption technology. Within this context,
we probe into the synthesis of magnetic biochar
(MBC) using co-precipitation, hydrothermal carbonization,
mechanical ball milling, and impregnation
pyrolysis as widely applied techniques. Our analysis
scrutinizes the strengths and drawbacks of these
techniques, with pyrolytic temperature emerging as
a critical variable influencing the physicochemical
properties and performance of MBC. We explored
various modification techniques including oxidation,
acid and alkaline modifications, element doping, surface
functional modification, nanomaterial loading,
and biological alteration, to overcome the drawbacks
of pristine MBC, which typically exhibits reduced
adsorption performance due to its magnetic medium.
These modifications enhance the physicochemical
properties of MBC, enabling it to efficiently adsorb
contaminants from water. MBC is efficient in the
removal of BPA from water. Magnetite and maghemite
iron oxides are commonly used in MBC production,
with MBC demonstrating effective BPA removal
fitting well with Freundlich and Langmuir models.
Notably, the pseudo-second-order model accurately mechanisms include pore filling, electrostatic attraction,
hydrophobic interactions, hydrogen bonding,
π-π interactions, and electron transfer surface interactions.
This review provides valuable insights into
BPA removal from water using MBC and suggests
future research directions for real-world water purification
applications.
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Citation
(12) Kamil Kayode Katibi, Khairul Faezah Md. Yunos, Rabaah Syahidah Azis, Raphael Terungwa Iwar, Suleiman Bashir Adamu, Abba Mohammed Umar and Kehinde Raheef Adebayo (2024). Unlocking the potential of magnetic biochar in wastewater purification: a review on the removal of Bisphenol A from aqueous solution. Environ. Monit. Assess., 196:492.