Facile One-Pot Synthesis of Sustainable Carboxymethyl Chitosan – Sewage Sludge Biochar for Effective Heavy Metal Chelation and Regeneration

Jerosha Ifthikar; Xiang Jiao; Audrey Ngambia; Ting Wang; Aimal Khan; Ali Jawad; Qiang Xue; Lei Liu; Zhuqi Chen

doi:10.1016/j.biortech.2018.04.053

Facile One-Pot Synthesis of Sustainable Carboxymethyl Chitosan – Sewage Sludge Biochar for Effective Heavy Metal Chelation and Regeneration

Jerosha Ifthikar, Xiang Jiao, Audrey Ngambia, Ting Wang, Aimal Khan, Ali Jawad, Qiang Xue, Lei Liu, Zhuqi Chen

Research output: Journal Publication › Article › peer-review

122 Citations (Scopus)

Abstract

In this paper, sewage sludge, a solid waste from wastewater treatment plant, which eagerly requires proper treatment was reused as solid support in the form of sewage sludge biochar, then modified with carboxymethyl chitosan to form a bio-adsorbent. Further, carboxymethyl chitosan coating on sewage sludge biochar improved carboxymethyl chitosan's stability in water. The prepared bio-adsorbent revealed a shorter equilibrium time (<60 min) for Pb(II) adsorption and a superior capacity of 594.17 mg g⁻¹ for Hg(II) adsorption, which are so far the best recorded performance achieved for chitosan based adsorbents. Additionally, the adsorbent was highly selective for heavy metal ions and it also presented a good stability and reusability for industrial applications. These outcomes demonstrate waste valorization through a green, facile and one-pot approach that turns the solid waste of sewage sludge into biochar adsorbent with propitious applications in the elimination of heavy metal ions from wastewater.

Original language	English
Pages (from-to)	22-31
Number of pages	10
Journal	Bioresource Technology
Volume	262
DOIs	https://doi.org/10.1016/j.biortech.2018.04.053
Publication status	Published - Aug 2018
Externally published	Yes

Keywords

Adsorption
Carboxymethyl chitosan
Lead
Mercury
Sewage sludge biochar

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

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

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10.1016/j.biortech.2018.04.053

Cite this

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title = "Facile One-Pot Synthesis of Sustainable Carboxymethyl Chitosan – Sewage Sludge Biochar for Effective Heavy Metal Chelation and Regeneration",

abstract = "In this paper, sewage sludge, a solid waste from wastewater treatment plant, which eagerly requires proper treatment was reused as solid support in the form of sewage sludge biochar, then modified with carboxymethyl chitosan to form a bio-adsorbent. Further, carboxymethyl chitosan coating on sewage sludge biochar improved carboxymethyl chitosan's stability in water. The prepared bio-adsorbent revealed a shorter equilibrium time (<60 min) for Pb(II) adsorption and a superior capacity of 594.17 mg g−1 for Hg(II) adsorption, which are so far the best recorded performance achieved for chitosan based adsorbents. Additionally, the adsorbent was highly selective for heavy metal ions and it also presented a good stability and reusability for industrial applications. These outcomes demonstrate waste valorization through a green, facile and one-pot approach that turns the solid waste of sewage sludge into biochar adsorbent with propitious applications in the elimination of heavy metal ions from wastewater.",

keywords = "Adsorption, Carboxymethyl chitosan, Lead, Mercury, Sewage sludge biochar",

author = "Jerosha Ifthikar and Xiang Jiao and Audrey Ngambia and Ting Wang and Aimal Khan and Ali Jawad and Qiang Xue and Lei Liu and Zhuqi Chen",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = aug,

doi = "10.1016/j.biortech.2018.04.053",

language = "English",

volume = "262",

pages = "22--31",

journal = "Bioresource Technology",

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T1 - Facile One-Pot Synthesis of Sustainable Carboxymethyl Chitosan – Sewage Sludge Biochar for Effective Heavy Metal Chelation and Regeneration

AU - Ifthikar, Jerosha

AU - Jiao, Xiang

AU - Ngambia, Audrey

AU - Wang, Ting

AU - Khan, Aimal

AU - Jawad, Ali

AU - Xue, Qiang

AU - Liu, Lei

AU - Chen, Zhuqi

PY - 2018/8

Y1 - 2018/8

N2 - In this paper, sewage sludge, a solid waste from wastewater treatment plant, which eagerly requires proper treatment was reused as solid support in the form of sewage sludge biochar, then modified with carboxymethyl chitosan to form a bio-adsorbent. Further, carboxymethyl chitosan coating on sewage sludge biochar improved carboxymethyl chitosan's stability in water. The prepared bio-adsorbent revealed a shorter equilibrium time (<60 min) for Pb(II) adsorption and a superior capacity of 594.17 mg g−1 for Hg(II) adsorption, which are so far the best recorded performance achieved for chitosan based adsorbents. Additionally, the adsorbent was highly selective for heavy metal ions and it also presented a good stability and reusability for industrial applications. These outcomes demonstrate waste valorization through a green, facile and one-pot approach that turns the solid waste of sewage sludge into biochar adsorbent with propitious applications in the elimination of heavy metal ions from wastewater.

AB - In this paper, sewage sludge, a solid waste from wastewater treatment plant, which eagerly requires proper treatment was reused as solid support in the form of sewage sludge biochar, then modified with carboxymethyl chitosan to form a bio-adsorbent. Further, carboxymethyl chitosan coating on sewage sludge biochar improved carboxymethyl chitosan's stability in water. The prepared bio-adsorbent revealed a shorter equilibrium time (<60 min) for Pb(II) adsorption and a superior capacity of 594.17 mg g−1 for Hg(II) adsorption, which are so far the best recorded performance achieved for chitosan based adsorbents. Additionally, the adsorbent was highly selective for heavy metal ions and it also presented a good stability and reusability for industrial applications. These outcomes demonstrate waste valorization through a green, facile and one-pot approach that turns the solid waste of sewage sludge into biochar adsorbent with propitious applications in the elimination of heavy metal ions from wastewater.

KW - Adsorption

KW - Carboxymethyl chitosan

KW - Lead

KW - Mercury

KW - Sewage sludge biochar

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U2 - 10.1016/j.biortech.2018.04.053

DO - 10.1016/j.biortech.2018.04.053

M3 - Article

C2 - 29689437

AN - SCOPUS:85046138682

SN - 0960-8524

VL - 262

SP - 22

EP - 31

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Facile One-Pot Synthesis of Sustainable Carboxymethyl Chitosan – Sewage Sludge Biochar for Effective Heavy Metal Chelation and Regeneration

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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