Wastewater Treatment by Polymeric Microspheres: A Review

Jiwon Lee, Rajkumar Patel

Research output: Contribution to journalReview articlepeer-review

Abstract

This review addresses polymer microspheres used as adsorbent for wastewater treatment.
The removal of various pollutants (including dyes, heavy metal ions, and organic pollutants) is a
prominent issue, as they can cause severe health problems. Porous microspheres can provide large
specific area and active sites for adsorption or photo degradation. Enhancement in performance is
achieved by various modifications, such as the introduction of nanoparticles, magnetic particles,
and ZIF‐8. Some microspheres were synthesized from synthetic polymers such as vinylic polymer
and polydopamine (PDA) through a facile fabrication process. Natural polymers (such as cellulose,
alginate, and chitosan) that are biodegradable and eco‐friendly are also used. The adsorbents used
in industrial application require high adsorption capacity, thermal stability, and recyclability. Batch
adsorption experiments were conducted to investigate the optimal conditions, influence of related
factors, and adsorption capacities. Insights regarding the adsorption mechanisms were given from
the kinetic model, isotherm model, and various characterization methods. The recyclability is investigated
through regeneration ratio, or their maintenance of their capability through repeated adsorption‐
desorption cycles. The high potential of polymer microsphere for the removal of pollutants
from wastewater is shown through the high adsorption capacities, environmentally friendliness,
and high stability.
Original languageEnglish
Article number1890
JournalPolymers
Volume14
Publication statusPublished - 2022 May 5

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