Fabrication and characterization of hydrophilic corn stalk biochar-supported nanoscale zero-valent iron composites for efficient metal removal

Fan Yang; Shuaishuai Zhang; Yuqing Sun; Kui Cheng; Jiangshan Li; Daniel C.W. Tsang

doi:10.1016/j.biortech.2018.06.029

Fabrication and characterization of hydrophilic corn stalk biochar-supported nanoscale zero-valent iron composites for efficient metal removal

Fan Yang
, Shuaishuai Zhang
, Yuqing Sun
, Kui Cheng
, Jiangshan Li
, Daniel C.W. Tsang

Research output: Journal article publication › Journal article › Academic research › peer-review

322 Citations (Scopus)

Abstract

Pyrolyzing low-cost agro-waste into biochar is a promising means for waste biomass utilization. This study engineers corn stalk-derived biochar with abundant hydrophilic functional groups as a support material for iron nanoparticles impregnation (nZVI-HCS). Surface chemistry and morphology of nZVI-HCS composites is characterized by SEM, TEM, TG, XRD, FTIR, XPS, and BET techniques, which helps to elucidate the mechanisms of Pb ²⁺, Cu ²⁺ and Zn ²⁺ removal from single and mixed-metal solutions in batch experiments. Equilibrium adsorption capacities can reach 195.1, 161.9 and 109.7 mg·g ⁻¹ for Pb ²⁺, Cu ²⁺ and Zn ²⁺ at neutral medium after 6-h process, respectively. The engineered biochar with hierarchical pores can impregnate iron nanoparticles, serve as an adsorbent, and enhance metal reduction/precipitation. Rapid removal and high performance can be maintained after five regeneration/reuse cycles. Multiple interaction mechanisms including adsorption, precipitation, reduction and complexation are responsible for metal removal by nZVI-HCS composites, which can be a novel biowaste-derived material for wastewater treatment.

Original language	English
Pages (from-to)	490-497
Number of pages	8
Journal	Bioresource Technology
Volume	265
DOIs	https://doi.org/10.1016/j.biortech.2018.06.029
Publication status	Published - 1 Oct 2018

Keywords

Engineered biochar
Iron-based nanomaterials
nZVI-carbon composites
Potentially toxic elements
Waste biomass valorization
Wastewater treatment

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.2018.06.029

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@article{dd1afb1158c2450da1036b1541a40271,

title = "Fabrication and characterization of hydrophilic corn stalk biochar-supported nanoscale zero-valent iron composites for efficient metal removal",

abstract = "Pyrolyzing low-cost agro-waste into biochar is a promising means for waste biomass utilization. This study engineers corn stalk-derived biochar with abundant hydrophilic functional groups as a support material for iron nanoparticles impregnation (nZVI-HCS). Surface chemistry and morphology of nZVI-HCS composites is characterized by SEM, TEM, TG, XRD, FTIR, XPS, and BET techniques, which helps to elucidate the mechanisms of Pb 2+, Cu 2+ and Zn 2+ removal from single and mixed-metal solutions in batch experiments. Equilibrium adsorption capacities can reach 195.1, 161.9 and 109.7 mg·g −1 for Pb 2+, Cu 2+ and Zn 2+ at neutral medium after 6-h process, respectively. The engineered biochar with hierarchical pores can impregnate iron nanoparticles, serve as an adsorbent, and enhance metal reduction/precipitation. Rapid removal and high performance can be maintained after five regeneration/reuse cycles. Multiple interaction mechanisms including adsorption, precipitation, reduction and complexation are responsible for metal removal by nZVI-HCS composites, which can be a novel biowaste-derived material for wastewater treatment. ",

keywords = "Engineered biochar, Iron-based nanomaterials, nZVI-carbon composites, Potentially toxic elements, Waste biomass valorization, Wastewater treatment",

author = "Fan Yang and Shuaishuai Zhang and Yuqing Sun and Kui Cheng and Jiangshan Li and Tsang, \{Daniel C.W.\}",

year = "2018",

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T1 - Fabrication and characterization of hydrophilic corn stalk biochar-supported nanoscale zero-valent iron composites for efficient metal removal

AU - Yang, Fan

AU - Zhang, Shuaishuai

AU - Sun, Yuqing

AU - Cheng, Kui

AU - Li, Jiangshan

AU - Tsang, Daniel C.W.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - Pyrolyzing low-cost agro-waste into biochar is a promising means for waste biomass utilization. This study engineers corn stalk-derived biochar with abundant hydrophilic functional groups as a support material for iron nanoparticles impregnation (nZVI-HCS). Surface chemistry and morphology of nZVI-HCS composites is characterized by SEM, TEM, TG, XRD, FTIR, XPS, and BET techniques, which helps to elucidate the mechanisms of Pb 2+, Cu 2+ and Zn 2+ removal from single and mixed-metal solutions in batch experiments. Equilibrium adsorption capacities can reach 195.1, 161.9 and 109.7 mg·g −1 for Pb 2+, Cu 2+ and Zn 2+ at neutral medium after 6-h process, respectively. The engineered biochar with hierarchical pores can impregnate iron nanoparticles, serve as an adsorbent, and enhance metal reduction/precipitation. Rapid removal and high performance can be maintained after five regeneration/reuse cycles. Multiple interaction mechanisms including adsorption, precipitation, reduction and complexation are responsible for metal removal by nZVI-HCS composites, which can be a novel biowaste-derived material for wastewater treatment.

AB - Pyrolyzing low-cost agro-waste into biochar is a promising means for waste biomass utilization. This study engineers corn stalk-derived biochar with abundant hydrophilic functional groups as a support material for iron nanoparticles impregnation (nZVI-HCS). Surface chemistry and morphology of nZVI-HCS composites is characterized by SEM, TEM, TG, XRD, FTIR, XPS, and BET techniques, which helps to elucidate the mechanisms of Pb 2+, Cu 2+ and Zn 2+ removal from single and mixed-metal solutions in batch experiments. Equilibrium adsorption capacities can reach 195.1, 161.9 and 109.7 mg·g −1 for Pb 2+, Cu 2+ and Zn 2+ at neutral medium after 6-h process, respectively. The engineered biochar with hierarchical pores can impregnate iron nanoparticles, serve as an adsorbent, and enhance metal reduction/precipitation. Rapid removal and high performance can be maintained after five regeneration/reuse cycles. Multiple interaction mechanisms including adsorption, precipitation, reduction and complexation are responsible for metal removal by nZVI-HCS composites, which can be a novel biowaste-derived material for wastewater treatment.

KW - Engineered biochar

KW - Iron-based nanomaterials

KW - nZVI-carbon composites

KW - Potentially toxic elements

KW - Waste biomass valorization

KW - Wastewater treatment

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U2 - 10.1016/j.biortech.2018.06.029

DO - 10.1016/j.biortech.2018.06.029

M3 - Journal article

SN - 0960-8524

VL - 265

SP - 490

EP - 497

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Fabrication and characterization of hydrophilic corn stalk biochar-supported nanoscale zero-valent iron composites for efficient metal removal

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

More information

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