Treatment of aqueous per- and poly-fluoroalkyl substances: A review of biochar adsorbent preparation methods
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Treatment of aqueous per- and poly-fluoroalkyl substances : A review of biochar adsorbent preparation methods. / Behnami, Ali; Pourakbar, Mojtaba; Ayyar, Anand Sharadha Ravi; Lee, Ji Woong; Gagnon, Graham; Zoroufchi Benis, Khaled.
In: Chemosphere, Vol. 357, 142088, 2024.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Treatment of aqueous per- and poly-fluoroalkyl substances
T2 - A review of biochar adsorbent preparation methods
AU - Behnami, Ali
AU - Pourakbar, Mojtaba
AU - Ayyar, Anand Sharadha Ravi
AU - Lee, Ji Woong
AU - Gagnon, Graham
AU - Zoroufchi Benis, Khaled
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024
Y1 - 2024
N2 - Per- and poly-fluoroalkyl substances (PFAS) are synthetic chemicals widely used in everyday products, causing elevated concentrations in drinking water and posing a global challenge. While adsorption methods are commonly employed for PFAS removal, the substantial cost and environmental footprint of commercial adsorbents highlight the need for more cost-effective alternatives. Additionally, existing adsorbents exhibit limited effectiveness, particularly against diverse PFAS types, such as short-chain PFAS, necessitating modifications to enhance adsorption capacity. Biochar can be considered a cost-effective and eco-friendly alternative to conventional adsorbents. With abundant feedstocks and favorable physicochemical properties, biochar shows significant potential to be applied as an adsorbent for removing contaminants from water. Despite its effectiveness in adsorbing different inorganic and organic contaminants from water environments, some factors restrict its effective application for PFAS adsorption. These factors are related to the biochar properties, and characteristics of PFAS, as well as water chemistry. Therefore, some modifications have been introduced to overcome these limitations and improve biochar's adsorption capacity. This review explores the preparation conditions, including the pyrolysis process, activation, and modification techniques applied to biochar to enhance its adsorption capacity for different types of PFAS. It addresses critical questions about the adsorption performance of biochar and its composites, mechanisms governing PFAS adsorption, challenges, and future perspectives in this field. The surge in research on biochar for PFAS adsorption indicates a growing interest, making this timely review a valuable resource for future research and an in-depth exploration of biochar's potential in PFAS remediation.
AB - Per- and poly-fluoroalkyl substances (PFAS) are synthetic chemicals widely used in everyday products, causing elevated concentrations in drinking water and posing a global challenge. While adsorption methods are commonly employed for PFAS removal, the substantial cost and environmental footprint of commercial adsorbents highlight the need for more cost-effective alternatives. Additionally, existing adsorbents exhibit limited effectiveness, particularly against diverse PFAS types, such as short-chain PFAS, necessitating modifications to enhance adsorption capacity. Biochar can be considered a cost-effective and eco-friendly alternative to conventional adsorbents. With abundant feedstocks and favorable physicochemical properties, biochar shows significant potential to be applied as an adsorbent for removing contaminants from water. Despite its effectiveness in adsorbing different inorganic and organic contaminants from water environments, some factors restrict its effective application for PFAS adsorption. These factors are related to the biochar properties, and characteristics of PFAS, as well as water chemistry. Therefore, some modifications have been introduced to overcome these limitations and improve biochar's adsorption capacity. This review explores the preparation conditions, including the pyrolysis process, activation, and modification techniques applied to biochar to enhance its adsorption capacity for different types of PFAS. It addresses critical questions about the adsorption performance of biochar and its composites, mechanisms governing PFAS adsorption, challenges, and future perspectives in this field. The surge in research on biochar for PFAS adsorption indicates a growing interest, making this timely review a valuable resource for future research and an in-depth exploration of biochar's potential in PFAS remediation.
KW - Adsorption
KW - Biochar
KW - Biochar activation
KW - Biochar composites
KW - Per- and poly-fluoroalkyl substances
KW - PFAS
U2 - 10.1016/j.chemosphere.2024.142088
DO - 10.1016/j.chemosphere.2024.142088
M3 - Journal article
C2 - 38643842
AN - SCOPUS:85190866705
VL - 357
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
M1 - 142088
ER -
ID: 391314034