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

Research output: Contribution to journalArticle

180 Citations (Scopus)

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 languageEnglish
Pages (from-to)615-622
Number of pages8
JournalBioresource Technology
Volume143
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Fingerprint

Trichloroethylene
trichloroethylene
Needles
pyrolysis
Pyrolysis
adsorption
Adsorption
temperature
Temperature
Microporosity
functional group
sorption
surface area
porosity
Functional groups
Sorption
biochar
Water
water
removal

Keywords

  • Black carbon
  • Carbon sequestration
  • Charcoal
  • Slow pyrolysis
  • Waste management

ASJC Scopus subject areas

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

Cite this

Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures. / Ahmad, Mahtab; Lee, Sang Soo; Rajapaksha, Anushka Upamali; Vithanage, Meththika; Zhang, Ming; Cho, Ju Sik; Lee, Sung Eun; Ok, Yong Sik.

In: Bioresource Technology, Vol. 143, 01.01.2013, p. 615-622.

Research output: Contribution to journalArticle

Ahmad, Mahtab ; Lee, Sang Soo ; Rajapaksha, Anushka Upamali ; Vithanage, Meththika ; Zhang, Ming ; Cho, Ju Sik ; Lee, Sung Eun ; Ok, Yong Sik. / Trichloroethylene adsorption by pine needle biochars produced at various pyrolysis temperatures. In: Bioresource Technology. 2013 ; Vol. 143. pp. 615-622.
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AU - Zhang, Ming

AU - Cho, Ju Sik

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