TY - JOUR
T1 - Engineered macroalgal and microalgal adsorbents
T2 - Synthesis routes and adsorptive performance on hazardous water contaminants
AU - Lee, Xin Jiat
AU - Ong, Hwai Chyuan
AU - Ooi, Jecksin
AU - Yu, Kai Ling
AU - Tham, Thing Chai
AU - Chen, Wei Hsin
AU - Ok, Yong Sik
N1 - Funding Information:
The authors wish to extend their appreciation to the Post Doctoral Research Fellowship and Department of Mechanical Engineering, Faculty of Engineering, University of Malaya , for providing their support in this research work. This research is also supported in part by the Higher Education Sprout Project , Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/2/5
Y1 - 2022/2/5
N2 - Colourants, micropollutants and heavy metals are regarded as the most notorious hazardous contaminants found in rivers, oceans and sewage treatment plants, with detrimental impacts on human health and environment. In recent development, algal biomass showed great potential for the synthesis of engineered algal adsorbents suitable for the adsorptive management of various pollutants. This review presents comprehensive investigations on the engineered synthesis routes focusing mainly on mechanical, thermochemical and activation processes to produce algal adsorbents. The adsorptive performances of engineered algal adsorbents are assessed in accordance with different categories of hazardous pollutants as well as in terms of their experimental and modelled adsorption capacities. Due to the unique physicochemical properties of macroalgae and microalgae in their adsorbent forms, the adsorption of hazardous pollutants was found to be highly effective, which involved different mechanisms such as physisorption, chemisorption, ion-exchange, complexation and others depending on the types of pollutants. Overall, both macroalgae and microalgae not only can be tailored into different forms of adsorbents based on the applications, their adsorption capacities are also far more superior compared to the conventional adsorbents.
AB - Colourants, micropollutants and heavy metals are regarded as the most notorious hazardous contaminants found in rivers, oceans and sewage treatment plants, with detrimental impacts on human health and environment. In recent development, algal biomass showed great potential for the synthesis of engineered algal adsorbents suitable for the adsorptive management of various pollutants. This review presents comprehensive investigations on the engineered synthesis routes focusing mainly on mechanical, thermochemical and activation processes to produce algal adsorbents. The adsorptive performances of engineered algal adsorbents are assessed in accordance with different categories of hazardous pollutants as well as in terms of their experimental and modelled adsorption capacities. Due to the unique physicochemical properties of macroalgae and microalgae in their adsorbent forms, the adsorption of hazardous pollutants was found to be highly effective, which involved different mechanisms such as physisorption, chemisorption, ion-exchange, complexation and others depending on the types of pollutants. Overall, both macroalgae and microalgae not only can be tailored into different forms of adsorbents based on the applications, their adsorption capacities are also far more superior compared to the conventional adsorbents.
KW - Algal biomass
KW - Engineered adsorbent
KW - Environmental sustainability
KW - Liquid adsorption
KW - Water and wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=85114492011&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2021.126921
DO - 10.1016/j.jhazmat.2021.126921
M3 - Article
C2 - 34523506
AN - SCOPUS:85114492011
SN - 0304-3894
VL - 423
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - Part A
M1 - 126921
ER -
