New mechanistic insight into rapid adsorption of pharmaceuticals from water utilizing activated biochar

Ali Maged; Pavani Dulanja Dissanayake; Xiao Yang; Charitha Pathirannahalage; Amit Bhatnagar; Yong Sik Ok

doi:10.1016/j.envres.2021.111693

New mechanistic insight into rapid adsorption of pharmaceuticals from water utilizing activated biochar

Ali Maged^*
, Pavani Dulanja Dissanayake
, Xiao Yang
, Charitha Pathirannahalage
, Amit Bhatnagar^*
, Yong Sik Ok^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

88 Citations (Scopus)

Abstract

The presence of emerging pollutants especially hazardous chemicals and pharmaceuticals in aquatic environments is a matter of grave concern to human health and the environment. In this study, coffee bean waste (CBW) was utilized to synthesize pristine (CBW₅₅₀) and activated (CBW₅₅₀^HPO) biochars for the elimination of diclofenac (DF) and levofloxacin (LEV) from water. A facile two-step approach was used to synthesize CBW₅₅₀^HPO using chemical pretreatment and pyrolysis under N₂ purging. BET results of CBW₅₅₀^HPO revealed that chemical pretreatment increased surface area by approximately 160 times compared to CBW₅₅₀. The calculated I_D/I_G ratio from Raman spectra confirmed that CBW₅₅₀^HPO had a high functionalized surface. Different operational parameters such as contact time, pH, adsorbent dose, ionic strength, and adsorbate concentration were studied and optimized. Maximum Langmuir adsorption capacity of CBW₅₅₀^HPO was found to be 61.17 and 110.70 mg/g for DF and LVX, respectively. Experimental results demonstrated that presence of NaCl in solution enhanced DF removal efficiency due to the salting-out effect. Electrostatic attraction, π−π bonding, and hydrophobic interaction were prominently responsible mechanisms for the adsorption of DF and LVX. Furthermore, continuous-flow mode studies confirmed that CBW₅₅₀^HPO can be successfully utilized in large-scale treatment applications.

Original language	English
Article number	111693
Journal	Environmental Research
Volume	202
DOIs	https://doi.org/10.1016/j.envres.2021.111693
Publication status	Published - 2021 Nov

Bibliographical note

Funding Information:
This work was supported by the Cooperative Research Program for Agriculture Science and Technology Development (Effects of plastic mulch wastes on crop productivity and agroenvironment, Project No. PJ01475801 ), Rural Development Administration , Republic of Korea and the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MSIT ) (No. 2021R1A2C2011734 ). Authors also thank Emma van Wijlen, Rijn Ijssel College, The Netherlands, for her kind assistance in some lab experiments.

Publisher Copyright:
© 2021 Elsevier Inc.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being
SDG 12 Responsible Consumption and Production

Keywords

Adsorption
Biochar
Diclofenac
Levofloxacin
Waste valorization
Water treatment

ASJC Scopus subject areas

Biochemistry
General Environmental Science

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10.1016/j.envres.2021.111693

Cite this

@article{4d69dc6185a7427092d086c791a7a18f,

title = "New mechanistic insight into rapid adsorption of pharmaceuticals from water utilizing activated biochar",

abstract = "The presence of emerging pollutants especially hazardous chemicals and pharmaceuticals in aquatic environments is a matter of grave concern to human health and the environment. In this study, coffee bean waste (CBW) was utilized to synthesize pristine (CBW550) and activated (CBW550HPO) biochars for the elimination of diclofenac (DF) and levofloxacin (LEV) from water. A facile two-step approach was used to synthesize CBW550HPO using chemical pretreatment and pyrolysis under N2 purging. BET results of CBW550HPO revealed that chemical pretreatment increased surface area by approximately 160 times compared to CBW550. The calculated ID/IG ratio from Raman spectra confirmed that CBW550HPO had a high functionalized surface. Different operational parameters such as contact time, pH, adsorbent dose, ionic strength, and adsorbate concentration were studied and optimized. Maximum Langmuir adsorption capacity of CBW550HPO was found to be 61.17 and 110.70 mg/g for DF and LVX, respectively. Experimental results demonstrated that presence of NaCl in solution enhanced DF removal efficiency due to the salting-out effect. Electrostatic attraction, π−π bonding, and hydrophobic interaction were prominently responsible mechanisms for the adsorption of DF and LVX. Furthermore, continuous-flow mode studies confirmed that CBW550HPO can be successfully utilized in large-scale treatment applications.",

keywords = "Adsorption, Biochar, Diclofenac, Levofloxacin, Waste valorization, Water treatment",

author = "Ali Maged and Dissanayake, \{Pavani Dulanja\} and Xiao Yang and Charitha Pathirannahalage and Amit Bhatnagar and Ok, \{Yong Sik\}",

note = "Funding Information: This work was supported by the Cooperative Research Program for Agriculture Science and Technology Development (Effects of plastic mulch wastes on crop productivity and agroenvironment, Project No. PJ01475801 ), Rural Development Administration , Republic of Korea and the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MSIT ) (No. 2021R1A2C2011734 ). Authors also thank Emma van Wijlen, Rijn Ijssel College, The Netherlands, for her kind assistance in some lab experiments. Publisher Copyright: {\textcopyright} 2021 Elsevier Inc.",

year = "2021",

month = nov,

doi = "10.1016/j.envres.2021.111693",

language = "English",

volume = "202",

journal = "Environmental Research",

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T1 - New mechanistic insight into rapid adsorption of pharmaceuticals from water utilizing activated biochar

AU - Maged, Ali

AU - Dissanayake, Pavani Dulanja

AU - Yang, Xiao

AU - Pathirannahalage, Charitha

AU - Bhatnagar, Amit

AU - Ok, Yong Sik

N1 - Funding Information: This work was supported by the Cooperative Research Program for Agriculture Science and Technology Development (Effects of plastic mulch wastes on crop productivity and agroenvironment, Project No. PJ01475801 ), Rural Development Administration , Republic of Korea and the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MSIT ) (No. 2021R1A2C2011734 ). Authors also thank Emma van Wijlen, Rijn Ijssel College, The Netherlands, for her kind assistance in some lab experiments. Publisher Copyright: © 2021 Elsevier Inc.

PY - 2021/11

Y1 - 2021/11

N2 - The presence of emerging pollutants especially hazardous chemicals and pharmaceuticals in aquatic environments is a matter of grave concern to human health and the environment. In this study, coffee bean waste (CBW) was utilized to synthesize pristine (CBW550) and activated (CBW550HPO) biochars for the elimination of diclofenac (DF) and levofloxacin (LEV) from water. A facile two-step approach was used to synthesize CBW550HPO using chemical pretreatment and pyrolysis under N2 purging. BET results of CBW550HPO revealed that chemical pretreatment increased surface area by approximately 160 times compared to CBW550. The calculated ID/IG ratio from Raman spectra confirmed that CBW550HPO had a high functionalized surface. Different operational parameters such as contact time, pH, adsorbent dose, ionic strength, and adsorbate concentration were studied and optimized. Maximum Langmuir adsorption capacity of CBW550HPO was found to be 61.17 and 110.70 mg/g for DF and LVX, respectively. Experimental results demonstrated that presence of NaCl in solution enhanced DF removal efficiency due to the salting-out effect. Electrostatic attraction, π−π bonding, and hydrophobic interaction were prominently responsible mechanisms for the adsorption of DF and LVX. Furthermore, continuous-flow mode studies confirmed that CBW550HPO can be successfully utilized in large-scale treatment applications.

AB - The presence of emerging pollutants especially hazardous chemicals and pharmaceuticals in aquatic environments is a matter of grave concern to human health and the environment. In this study, coffee bean waste (CBW) was utilized to synthesize pristine (CBW550) and activated (CBW550HPO) biochars for the elimination of diclofenac (DF) and levofloxacin (LEV) from water. A facile two-step approach was used to synthesize CBW550HPO using chemical pretreatment and pyrolysis under N2 purging. BET results of CBW550HPO revealed that chemical pretreatment increased surface area by approximately 160 times compared to CBW550. The calculated ID/IG ratio from Raman spectra confirmed that CBW550HPO had a high functionalized surface. Different operational parameters such as contact time, pH, adsorbent dose, ionic strength, and adsorbate concentration were studied and optimized. Maximum Langmuir adsorption capacity of CBW550HPO was found to be 61.17 and 110.70 mg/g for DF and LVX, respectively. Experimental results demonstrated that presence of NaCl in solution enhanced DF removal efficiency due to the salting-out effect. Electrostatic attraction, π−π bonding, and hydrophobic interaction were prominently responsible mechanisms for the adsorption of DF and LVX. Furthermore, continuous-flow mode studies confirmed that CBW550HPO can be successfully utilized in large-scale treatment applications.

KW - Adsorption

KW - Biochar

KW - Diclofenac

KW - Levofloxacin

KW - Waste valorization

KW - Water treatment

UR - https://www.scopus.com/pages/publications/85110500299

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DO - 10.1016/j.envres.2021.111693

M3 - Article

C2 - 34270992

AN - SCOPUS:85110500299

SN - 0013-9351

VL - 202

JO - Environmental Research

JF - Environmental Research

M1 - 111693

ER -

New mechanistic insight into rapid adsorption of pharmaceuticals from water utilizing activated biochar

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

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