High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge

Shih Hsin Ho; Yi di Chen; Zhong kai Yang; Dillirani Nagarajan; Jo Shu Chang; Nan qi Ren

doi:10.1016/j.biortech.2017.08.025

High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge

Shih Hsin Ho
, Yi di Chen
, Zhong kai Yang
, Dillirani Nagarajan
, Jo Shu Chang
, Nan qi Ren^*

^*Corresponding author for this work

Harbin Institute of Technology
National Cheng Kung University
National Taiwan University

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

294 Scopus citations

Abstract

The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400 °C to 800 °C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb²⁺ from aqueous solutions efficiently with an adsorption capacity of 51.20 mg/g. The Pb²⁺ adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively. Analysis of the characteristics of biochar before and after metal treatment suggests that electrostatic attraction, precipitation, surface complexation and ion exchange are the possible Pb²⁺ removal mechanisms. This study demonstrates a successful example of waste refinery by converting anaerobic digestion sludge to feasible heavy metal adsorbents to implement the concept of circular economy.

Original language	English
Pages (from-to)	142-149
Number of pages	8
Journal	Bioresource Technology
Volume	246
DOIs	https://doi.org/10.1016/j.biortech.2017.08.025
State	Published - Dec 2017

UN SDGs

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

SDG 7 Affordable and Clean Energy
SDG 8 Decent Work and Economic Growth
SDG 12 Responsible Consumption and Production

Keywords

Anaerobic digestion sludge
Biochar
Heavy metals removal

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10.1016/j.biortech.2017.08.025

Cite this

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title = "High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge",

abstract = "The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400 °C to 800 °C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb2+ from aqueous solutions efficiently with an adsorption capacity of 51.20 mg/g. The Pb2+ adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively. Analysis of the characteristics of biochar before and after metal treatment suggests that electrostatic attraction, precipitation, surface complexation and ion exchange are the possible Pb2+ removal mechanisms. This study demonstrates a successful example of waste refinery by converting anaerobic digestion sludge to feasible heavy metal adsorbents to implement the concept of circular economy.",

keywords = "Anaerobic digestion sludge, Biochar, Heavy metals removal",

author = "Ho, \{Shih Hsin\} and Chen, \{Yi di\} and Yang, \{Zhong kai\} and Dillirani Nagarajan and Chang, \{Jo Shu\} and Ren, \{Nan qi\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = dec,

doi = "10.1016/j.biortech.2017.08.025",

language = "英语",

volume = "246",

pages = "142--149",

journal = "Bioresource Technology",

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T1 - High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge

AU - Ho, Shih Hsin

AU - Chen, Yi di

AU - Yang, Zhong kai

AU - Nagarajan, Dillirani

AU - Chang, Jo Shu

AU - Ren, Nan qi

PY - 2017/12

Y1 - 2017/12

N2 - The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400 °C to 800 °C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb2+ from aqueous solutions efficiently with an adsorption capacity of 51.20 mg/g. The Pb2+ adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively. Analysis of the characteristics of biochar before and after metal treatment suggests that electrostatic attraction, precipitation, surface complexation and ion exchange are the possible Pb2+ removal mechanisms. This study demonstrates a successful example of waste refinery by converting anaerobic digestion sludge to feasible heavy metal adsorbents to implement the concept of circular economy.

AB - The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400 °C to 800 °C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb2+ from aqueous solutions efficiently with an adsorption capacity of 51.20 mg/g. The Pb2+ adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively. Analysis of the characteristics of biochar before and after metal treatment suggests that electrostatic attraction, precipitation, surface complexation and ion exchange are the possible Pb2+ removal mechanisms. This study demonstrates a successful example of waste refinery by converting anaerobic digestion sludge to feasible heavy metal adsorbents to implement the concept of circular economy.

KW - Anaerobic digestion sludge

KW - Biochar

KW - Heavy metals removal

UR - https://www.scopus.com/pages/publications/85028310042

U2 - 10.1016/j.biortech.2017.08.025

DO - 10.1016/j.biortech.2017.08.025

M3 - 文章

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AN - SCOPUS:85028310042

SN - 0960-8524

VL - 246

SP - 142

EP - 149

JO - Bioresource Technology

JF - Bioresource Technology

ER -

High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge

Abstract

UN SDGs

Keywords

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