Removal of Cd(II) from aqueous solutions using plant-derived biochar: Kinetics, isotherm and characterization

Yan Yan Lam; Sam S.S.  Lau; Jonathan W.C.  Wong

doi:10.1016/j.biteb.2019.100323

Removal of Cd(II) from aqueous solutions using plant-derived biochar: Kinetics, isotherm and characterization

Yan Yan Lam, Sam S.S. Lau^*, Jonathan W.C. Wong

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

29 Citations (Scopus)

Abstract

As a carbon-rich, microporous solid produced from biomass pyrolysis, biochar derived from plant materials has been gaining research attention for their potential application as adsorbents in removal of toxic heavy metals. The study aimed to investigate the efficiency of biochars derived from oil seed rape (OSR), Miscanthus (MSP) and wheat (WSP) in the removal of Cd(II) in aqueous solution and compare the Cd(II) adsorption capacity of biochars produced at two pyrolysis temperatures of 550 °C and 700 °C. Batch Cd(II) adsorption experiments revealed that biochars derived from OSR and MSP that prepared at pyrolysis temperature of 550 °C performed better in Cd(II) removal than those at 700 °C. The pseudo-first kinetic model and the Sips isotherm model provided the best simulation of the kinetic and equilibrium data, respectively for all biochars tested. Desorption of Cd(II) from all biochars was achieved with nearly complete Cd(II) recovery using HNO₃ as the desorbing agent.

Original language	English
Article number	100323
Journal	Bioresource Technology Reports
Volume	8
DOIs	https://doi.org/10.1016/j.biteb.2019.100323
Publication status	Published - Dec 2019

Scopus Subject Areas

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

User-Defined Keywords

Adsorption
Biochar
Cadmium(II)
Desorption
Heavy metals
Water treatment

UN SDGs

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

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10.1016/j.biteb.2019.100323

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title = "Removal of Cd(II) from aqueous solutions using plant-derived biochar: Kinetics, isotherm and characterization",

abstract = "As a carbon-rich, microporous solid produced from biomass pyrolysis, biochar derived from plant materials has been gaining research attention for their potential application as adsorbents in removal of toxic heavy metals. The study aimed to investigate the efficiency of biochars derived from oil seed rape (OSR), Miscanthus (MSP) and wheat (WSP) in the removal of Cd(II) in aqueous solution and compare the Cd(II) adsorption capacity of biochars produced at two pyrolysis temperatures of 550 °C and 700 °C. Batch Cd(II) adsorption experiments revealed that biochars derived from OSR and MSP that prepared at pyrolysis temperature of 550 °C performed better in Cd(II) removal than those at 700 °C. The pseudo-first kinetic model and the Sips isotherm model provided the best simulation of the kinetic and equilibrium data, respectively for all biochars tested. Desorption of Cd(II) from all biochars was achieved with nearly complete Cd(II) recovery using HNO3 as the desorbing agent.",

keywords = "Adsorption, Biochar, Cadmium(II), Desorption, Heavy metals, Water treatment",

author = "Lam, {Yan Yan} and Lau, {Sam S.S.} and Wong, {Jonathan W.C.}",

note = "Funding Information: This research was supported by the Institutional Development Scheme funding of the Competitive Research Funding Exercise for Local Self-financing Degree Sector of the Hong Kong Research Grants Council (Project reference UGC/IDS23/15 ) to the School of Continuing Education of Hong Kong Baptist University , with Dr. Sam SS Lau as the Project Team Leader. Publisher copyright: {\textcopyright} 2019 Elsevier Ltd. All rights reserved. ",

year = "2019",

month = dec,

doi = "10.1016/j.biteb.2019.100323",

language = "English",

volume = "8",

journal = "Bioresource Technology Reports",

issn = "2589-014X",

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TY - JOUR

T1 - Removal of Cd(II) from aqueous solutions using plant-derived biochar

T2 - Kinetics, isotherm and characterization

AU - Lam, Yan Yan

AU - Lau, Sam S.S.

AU - Wong, Jonathan W.C.

N1 - Funding Information: This research was supported by the Institutional Development Scheme funding of the Competitive Research Funding Exercise for Local Self-financing Degree Sector of the Hong Kong Research Grants Council (Project reference UGC/IDS23/15 ) to the School of Continuing Education of Hong Kong Baptist University , with Dr. Sam SS Lau as the Project Team Leader. Publisher copyright: © 2019 Elsevier Ltd. All rights reserved.

PY - 2019/12

Y1 - 2019/12

N2 - As a carbon-rich, microporous solid produced from biomass pyrolysis, biochar derived from plant materials has been gaining research attention for their potential application as adsorbents in removal of toxic heavy metals. The study aimed to investigate the efficiency of biochars derived from oil seed rape (OSR), Miscanthus (MSP) and wheat (WSP) in the removal of Cd(II) in aqueous solution and compare the Cd(II) adsorption capacity of biochars produced at two pyrolysis temperatures of 550 °C and 700 °C. Batch Cd(II) adsorption experiments revealed that biochars derived from OSR and MSP that prepared at pyrolysis temperature of 550 °C performed better in Cd(II) removal than those at 700 °C. The pseudo-first kinetic model and the Sips isotherm model provided the best simulation of the kinetic and equilibrium data, respectively for all biochars tested. Desorption of Cd(II) from all biochars was achieved with nearly complete Cd(II) recovery using HNO3 as the desorbing agent.

AB - As a carbon-rich, microporous solid produced from biomass pyrolysis, biochar derived from plant materials has been gaining research attention for their potential application as adsorbents in removal of toxic heavy metals. The study aimed to investigate the efficiency of biochars derived from oil seed rape (OSR), Miscanthus (MSP) and wheat (WSP) in the removal of Cd(II) in aqueous solution and compare the Cd(II) adsorption capacity of biochars produced at two pyrolysis temperatures of 550 °C and 700 °C. Batch Cd(II) adsorption experiments revealed that biochars derived from OSR and MSP that prepared at pyrolysis temperature of 550 °C performed better in Cd(II) removal than those at 700 °C. The pseudo-first kinetic model and the Sips isotherm model provided the best simulation of the kinetic and equilibrium data, respectively for all biochars tested. Desorption of Cd(II) from all biochars was achieved with nearly complete Cd(II) recovery using HNO3 as the desorbing agent.

KW - Adsorption

KW - Biochar

KW - Cadmium(II)

KW - Desorption

KW - Heavy metals

KW - Water treatment

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U2 - 10.1016/j.biteb.2019.100323

DO - 10.1016/j.biteb.2019.100323

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SN - 2589-014X

VL - 8

JO - Bioresource Technology Reports

JF - Bioresource Technology Reports

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ER -

Removal of Cd(II) from aqueous solutions using plant-derived biochar: Kinetics, isotherm and characterization

Abstract

Scopus Subject Areas

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UN SDGs

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