Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures

Mahtab Ahmad; Sang Soo Lee; Anushka Upamali Rajapaksha; Meththika Vithanage; Ming Zhang; Ju Sik Cho; Sung Eun Lee; Yong Sik Ok

doi:10.1016/j.biortech.2013.06.033

Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures

Mahtab Ahmad
, Sang Soo Lee
, Anushka Upamali Rajapaksha
, Meththika Vithanage
, Ming Zhang
, Ju Sik Cho
, Sung Eun Lee
, Yong Sik Ok

School of Applied Bioscience

Kangwon National University
University of Arid Agriculture Rawalpindi
Institute of Fundamental Studies Kandy
China Jiliang University
Sunchon National University

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

371 Scopus citations

Abstract

In this study, pine needles were converted to biochar (BC) at different pyrolysis temperatures of 300, 500, and 700°C to sorb trichloroethylene (TCE), and the changes in BC properties with each temperature were evaluated. Pyrolysis temperature showed a pronounced effect on BC properties. Decreases in molar H/C and O/C ratios resulted from removing O- and H-containing functional groups with increasing temperature, and produced high aromaticity and low polarity BCs. BCs produced at higher temperature showed greater TCE removal efficiency from water due to their high surface area, micro-porosity, and carbonized extent. The performance of various BCs for TCE removal was assessed by the Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich adsorption models, among which the Temkin and Dubinin-Radushkevich models best described TCE adsorption onto various BCs, indicating prevailing sorption mechanism as pore-filling.

Original language	English
Pages (from-to)	615-622
Number of pages	8
Journal	Bioresource Technology
Volume	143
DOIs	https://doi.org/10.1016/j.biortech.2013.06.033
State	Published - Sep 2013

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Black carbon
Carbon sequestration
Charcoal
Slow pyrolysis
Waste management

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10.1016/j.biortech.2013.06.033

Cite this

@article{dba2baa161c046258fd4c9f15d2ab3e9,

title = "Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures",

abstract = "In this study, pine needles were converted to biochar (BC) at different pyrolysis temperatures of 300, 500, and 700°C to sorb trichloroethylene (TCE), and the changes in BC properties with each temperature were evaluated. Pyrolysis temperature showed a pronounced effect on BC properties. Decreases in molar H/C and O/C ratios resulted from removing O- and H-containing functional groups with increasing temperature, and produced high aromaticity and low polarity BCs. BCs produced at higher temperature showed greater TCE removal efficiency from water due to their high surface area, micro-porosity, and carbonized extent. The performance of various BCs for TCE removal was assessed by the Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich adsorption models, among which the Temkin and Dubinin-Radushkevich models best described TCE adsorption onto various BCs, indicating prevailing sorption mechanism as pore-filling.",

keywords = "Black carbon, Carbon sequestration, Charcoal, Slow pyrolysis, Waste management",

author = "Mahtab Ahmad and Lee, \{Sang Soo\} and Rajapaksha, \{Anushka Upamali\} and Meththika Vithanage and Ming Zhang and Cho, \{Ju Sik\} and Lee, \{Sung Eun\} and Ok, \{Yong Sik\}",

year = "2013",

month = sep,

doi = "10.1016/j.biortech.2013.06.033",

language = "English",

volume = "143",

pages = "615--622",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures

AU - Ahmad, Mahtab

AU - Lee, Sang Soo

AU - Rajapaksha, Anushka Upamali

AU - Vithanage, Meththika

AU - Zhang, Ming

AU - Cho, Ju Sik

AU - Lee, Sung Eun

AU - Ok, Yong Sik

PY - 2013/9

Y1 - 2013/9

N2 - In this study, pine needles were converted to biochar (BC) at different pyrolysis temperatures of 300, 500, and 700°C to sorb trichloroethylene (TCE), and the changes in BC properties with each temperature were evaluated. Pyrolysis temperature showed a pronounced effect on BC properties. Decreases in molar H/C and O/C ratios resulted from removing O- and H-containing functional groups with increasing temperature, and produced high aromaticity and low polarity BCs. BCs produced at higher temperature showed greater TCE removal efficiency from water due to their high surface area, micro-porosity, and carbonized extent. The performance of various BCs for TCE removal was assessed by the Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich adsorption models, among which the Temkin and Dubinin-Radushkevich models best described TCE adsorption onto various BCs, indicating prevailing sorption mechanism as pore-filling.

AB - In this study, pine needles were converted to biochar (BC) at different pyrolysis temperatures of 300, 500, and 700°C to sorb trichloroethylene (TCE), and the changes in BC properties with each temperature were evaluated. Pyrolysis temperature showed a pronounced effect on BC properties. Decreases in molar H/C and O/C ratios resulted from removing O- and H-containing functional groups with increasing temperature, and produced high aromaticity and low polarity BCs. BCs produced at higher temperature showed greater TCE removal efficiency from water due to their high surface area, micro-porosity, and carbonized extent. The performance of various BCs for TCE removal was assessed by the Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich adsorption models, among which the Temkin and Dubinin-Radushkevich models best described TCE adsorption onto various BCs, indicating prevailing sorption mechanism as pore-filling.

KW - Black carbon

KW - Carbon sequestration

KW - Charcoal

KW - Slow pyrolysis

KW - Waste management

UR - https://www.scopus.com/pages/publications/84880308166

U2 - 10.1016/j.biortech.2013.06.033

DO - 10.1016/j.biortech.2013.06.033

M3 - Article

AN - SCOPUS:84880308166

SN - 0960-8524

VL - 143

SP - 615

EP - 622

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures

Abstract

UN SDGs

Keywords

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