A green biochar/iron oxide composite for methylene blue removal

Ping Zhang; David O'Connor; Yinan Wang; Lin Jiang; Tianxiang Xia; Liuwei Wang; Daniel C.W. Tsang; Yong Sik Ok; Deyi Hou

doi:10.1016/j.jhazmat.2019.121286

A green biochar/iron oxide composite for methylene blue removal

Ping Zhang, David O'Connor, Yinan Wang, Lin Jiang, Tianxiang Xia, Liuwei Wang, Daniel C.W. Tsang, Yong Sik Ok, Deyi Hou

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

383 Citations (Scopus)

Abstract

Adsorbents that effectively remove dye substances from industrial effluents are needed for the protection of human health and the natural environment. However, adsorbent manufacture is associated with secondary environmental impacts. In this study, a green biochar/iron oxide composite was produced using a facile approach involving banana peel extract and FeSO₄. The modified biochar's capacity to adsorb methylene blue (MB) was considerably enhanced (Langmuir Q_max of 862 mg/g for MB when C₀ = 500 mg/L, pH = 6.1, T =313 K) compared to the unmodified banana peel biochar, and exhibited good performance for a wide range of pH values (pH 2.05–9.21). The Langmuir isotherm model and pseudo second-order kinetic model accurately describe the adsorption process. The material properties and corresponding adsorption mechanisms were investigated by various experimental techniques. Enhanced MB adsorption by the biochar/iron oxide composite is attributed to increased electronic attraction to MB molecules, as evidenced by XPS analysis. High adsorption capacity was retained after 5 regeneration cycles. This study suggests that biochar can be modified by a green synthesis approach to produce biochar/iron oxide composite with good MB removal capacity.

Original language	English
Article number	121286
Journal	Journal of hazardous materials
Volume	384
DOIs	https://doi.org/10.1016/j.jhazmat.2019.121286
Publication status	Published - 2020 Feb 15

Bibliographical note

Funding Information:
This work was supported by China’s National Water Pollution Control and Treatment Science and Technology Major Project (Grant No. 2018ZX07109-003 ), and the National Key Research and Development Program of China (Grant No. 2018YFC1801300 ).

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Dye adsorption
Engineered biochar
Green synthesis
Methylene blue
Modified biochar

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

UN SDGs

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

Access to Document

10.1016/j.jhazmat.2019.121286

Cite this

@article{21ffbcdde3634a39834e709872df6c00,

title = "A green biochar/iron oxide composite for methylene blue removal",

abstract = "Adsorbents that effectively remove dye substances from industrial effluents are needed for the protection of human health and the natural environment. However, adsorbent manufacture is associated with secondary environmental impacts. In this study, a green biochar/iron oxide composite was produced using a facile approach involving banana peel extract and FeSO4. The modified biochar's capacity to adsorb methylene blue (MB) was considerably enhanced (Langmuir Qmax of 862 mg/g for MB when C0 = 500 mg/L, pH = 6.1, T =313 K) compared to the unmodified banana peel biochar, and exhibited good performance for a wide range of pH values (pH 2.05–9.21). The Langmuir isotherm model and pseudo second-order kinetic model accurately describe the adsorption process. The material properties and corresponding adsorption mechanisms were investigated by various experimental techniques. Enhanced MB adsorption by the biochar/iron oxide composite is attributed to increased electronic attraction to MB molecules, as evidenced by XPS analysis. High adsorption capacity was retained after 5 regeneration cycles. This study suggests that biochar can be modified by a green synthesis approach to produce biochar/iron oxide composite with good MB removal capacity.",

keywords = "Dye adsorption, Engineered biochar, Green synthesis, Methylene blue, Modified biochar",

author = "Ping Zhang and David O'Connor and Yinan Wang and Lin Jiang and Tianxiang Xia and Liuwei Wang and Tsang, {Daniel C.W.} and Ok, {Yong Sik} and Deyi Hou",

note = "Funding Information: This work was supported by China{\textquoteright}s National Water Pollution Control and Treatment Science and Technology Major Project (Grant No. 2018ZX07109-003 ), and the National Key Research and Development Program of China (Grant No. 2018YFC1801300 ). Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = feb,

day = "15",

doi = "10.1016/j.jhazmat.2019.121286",

language = "English",

volume = "384",

journal = "Journal of hazardous materials",

issn = "0304-3894",

publisher = "Elsevier",

}

TY - JOUR

T1 - A green biochar/iron oxide composite for methylene blue removal

AU - Zhang, Ping

AU - O'Connor, David

AU - Wang, Yinan

AU - Jiang, Lin

AU - Xia, Tianxiang

AU - Wang, Liuwei

AU - Tsang, Daniel C.W.

AU - Ok, Yong Sik

AU - Hou, Deyi

N1 - Funding Information: This work was supported by China’s National Water Pollution Control and Treatment Science and Technology Major Project (Grant No. 2018ZX07109-003 ), and the National Key Research and Development Program of China (Grant No. 2018YFC1801300 ). Publisher Copyright: © 2019 Elsevier B.V.

PY - 2020/2/15

Y1 - 2020/2/15

N2 - Adsorbents that effectively remove dye substances from industrial effluents are needed for the protection of human health and the natural environment. However, adsorbent manufacture is associated with secondary environmental impacts. In this study, a green biochar/iron oxide composite was produced using a facile approach involving banana peel extract and FeSO4. The modified biochar's capacity to adsorb methylene blue (MB) was considerably enhanced (Langmuir Qmax of 862 mg/g for MB when C0 = 500 mg/L, pH = 6.1, T =313 K) compared to the unmodified banana peel biochar, and exhibited good performance for a wide range of pH values (pH 2.05–9.21). The Langmuir isotherm model and pseudo second-order kinetic model accurately describe the adsorption process. The material properties and corresponding adsorption mechanisms were investigated by various experimental techniques. Enhanced MB adsorption by the biochar/iron oxide composite is attributed to increased electronic attraction to MB molecules, as evidenced by XPS analysis. High adsorption capacity was retained after 5 regeneration cycles. This study suggests that biochar can be modified by a green synthesis approach to produce biochar/iron oxide composite with good MB removal capacity.

AB - Adsorbents that effectively remove dye substances from industrial effluents are needed for the protection of human health and the natural environment. However, adsorbent manufacture is associated with secondary environmental impacts. In this study, a green biochar/iron oxide composite was produced using a facile approach involving banana peel extract and FeSO4. The modified biochar's capacity to adsorb methylene blue (MB) was considerably enhanced (Langmuir Qmax of 862 mg/g for MB when C0 = 500 mg/L, pH = 6.1, T =313 K) compared to the unmodified banana peel biochar, and exhibited good performance for a wide range of pH values (pH 2.05–9.21). The Langmuir isotherm model and pseudo second-order kinetic model accurately describe the adsorption process. The material properties and corresponding adsorption mechanisms were investigated by various experimental techniques. Enhanced MB adsorption by the biochar/iron oxide composite is attributed to increased electronic attraction to MB molecules, as evidenced by XPS analysis. High adsorption capacity was retained after 5 regeneration cycles. This study suggests that biochar can be modified by a green synthesis approach to produce biochar/iron oxide composite with good MB removal capacity.

KW - Dye adsorption

KW - Engineered biochar

KW - Green synthesis

KW - Methylene blue

KW - Modified biochar

UR - http://www.scopus.com/inward/record.url?scp=85072782882&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2019.121286

DO - 10.1016/j.jhazmat.2019.121286

M3 - Article

C2 - 31586920

AN - SCOPUS:85072782882

SN - 0304-3894

VL - 384

JO - Journal of hazardous materials

JF - Journal of hazardous materials

M1 - 121286

ER -

A green biochar/iron oxide composite for methylene blue removal

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this