Influence of pyrolysis temperature on lead immobilization by chemically modified coconut fiber-derived biochars in aqueous environments

Weidong Wu; Jianhong Li; Nabeel Khan Niazi; Karin Müller; Yingchao Chu; Lingling Zhang; Guodong Yuan; Kouping Lu; Zhaoliang Song; Hailong Wang

doi:10.1007/s11356-016-7428-0

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Influence of pyrolysis temperature on lead immobilization by chemically modified coconut fiber-derived biochars in aqueous environments

Journal article

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Influence of pyrolysis temperature on lead immobilization by chemically modified coconut fiber-derived biochars in aqueous environments

Weidong Wu, Jianhong Li, Nabeel Khan Niazi, Karin Müller, Yingchao Chu, Lingling Zhang, Guodong Yuan, Kouping Lu, Zhaoliang Song and Hailong Wang

Environmental science and pollution research international, Vol.23(22), pp.22890-22896

11/2016

DOI: https://doi.org/10.1007/s11356-016-7428-0

PMCID: PMC5101285

PMID: 27572693

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Abstract

Atmospheric Protection/Air Quality Control/Air Pollution

Biochar

Coconut fibers

Ecotoxicology

Environment

Environment, general

Environmental Chemistry

Environmental Health

FTIR

Functional group

Modified biochar

SEM

Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution

Wastewater treatment

Biochar has received widespread attention as an eco-friendly and efficient material for immobilization of toxic heavy metals in aqueous environments. In the present study, three types of coconut fiber-derived biochars were obtained by pyrolyzing at three temperatures, i.e., 300, 500, and 700 °C. In addition, nine types of biochars were prepared by chemical modification with ammonia, hydrogen peroxide, and nitric acid, respectively, which were used to investigate changes in physico-chemical properties by inter alia, Fourier transformation infrared spectrophotometry (FTIR), scanning electron microscope (SEM), and BET specific surface area analysis. Batch sorption experiments were carried out to determine the sorption capacity of the biochars for lead (Pb) in aqueous solutions. Results showed that the cation exchange capacity of biochar pyrolyzed at 300 °C and modified with nitric acid increased threefold compared to the control. Loosely corrugated carbon surface and uneven carbon surface of the biochar pyrolyzed at 300 °C were produced during ammonia and nitric acid modifications. Removal rate of Pb by the coconut biochar pyrolyzed at 300 °C and modified with ammonia was increased from 71.8 to 99.6 % compared to the untreated biochar in aqueous solutions containing 100 mg L−1 Pb. However, chemical modification did not enhance adsorption of Pb of the biochars pyrolyzed at higher temperatures (e.g., 500 or 700 °C), indicating that resistance of biochars to chemical treatment increased with pyrolysis temperature.

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Title: Influence of pyrolysis temperature on lead immobilization by chemically modified coconut fiber-derived biochars in aqueous environments
Creators: Weidong Wu - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province Zhejiang A & F University Lin’an Hangzhou 311300 China
Jianhong Li - Ministry of Education Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources Hainan University Haikou 570228 China
Nabeel Khan Niazi - MARUM and Department of Geosciences University of Bremen Bremen D-28359 Germany
Karin Müller - The New Zealand Institute for Plant & Food Research Limited Ruakura Research Centre Private Bag 3123 Hamilton 3240 New Zealand
Yingchao Chu - Ministry of Education Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources Hainan University Haikou 570228 China
Lingling Zhang - Ministry of Education Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources Hainan University Haikou 570228 China
Guodong Yuan - Guangdong Dazhong Agriculture Science Co. Ltd. Hongmei Town Dongguan City Guangdong 523169 China
Kouping Lu - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province Zhejiang A & F University Lin’an Hangzhou 311300 China
Zhaoliang Song - Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province Zhejiang A & F University Lin’an Hangzhou 311300 China
Hailong Wang - Guangdong Dazhong Agriculture Science Co. Ltd. Hongmei Town Dongguan City Guangdong 523169 China
Publication Details: Environmental science and pollution research international, Vol.23(22), pp.22890-22896
Publisher: Springer Berlin Heidelberg
Grant note: No. 21467007; No. 41271337 / the National Natural Science Foundation of China 21577131 / National Natural Science Foundation of China (http://dx.doi.org/10.13039/501100001809)
Identifiers: 991012951196902368
Copyright: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http:// creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Academic Unit: Faculty of Science and Engineering
Language: English
Resource Type: Journal article

Influence of pyrolysis temperature on lead immobilization by chemically modified coconut fiber-derived biochars in aqueous environments

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