TITLE:
Summary on Adsorption and Photocatalysis for Pollutant Remediation: Mini Review
AUTHORS:
Buzuayehu Abebe, H. C. Ananda Murthy, Enyew Amare
KEYWORDS:
Adsorption, Photo Catalysis, Isotherms, Kinetics, Pollutants
JOURNAL NAME:
Journal of Encapsulation and Adsorption Sciences,
Vol.8 No.4,
December
5,
2018
ABSTRACT: Adsorption and photo catalysis are the most popular methods applied for
the reduction of amount of pollutants that enter water bodies. The main challenge
in the process of adsorption is the demonstration of the experimental data
obtained from sorption processes. For many decades most of the researchers used
adsorption and kinetic of adsorption as a repetitive work to describe the
adsorption data by using common models such as, Langmuir and Freundlich
for adsorption isotherms; PFO and PSO models for kinetics. This has been
done without careful evaluation of the characteristics of adsorption process.
It has been well understood that adsorption does not degrade the pollutant to
eco-friendly products and photo catalysis will not degrade without adsorption
of the pollutant on the catalyst. Therefore, understanding the detailed
mechanism of adsorption, as well as, photo catalysis has been presented in this
paper. During photo catalysis: modification towards suppression of
electron-hole recombination, improving visible light response, preventing
agglomeration, controlling the shape, size, morphology, etc. are the most
important steps. This mini review also widely discusses the key points behind
adsorption and photo catalysis.