Modeling adsorption kinetics of trichloroethylene onto biochars derived from soybean stover and peanut shell wastes

Mahtab Ahmad, Sang Soo Lee, Sang Eun Oh, Dinesh Mohan, Deok Hyun Moon, Young Han Lee, Yong Sik Ok

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Trichloroethylene (TCE) is one of the most hazardous organic pollutants in groundwater. Biochar produced from agricultural waste materials could serve as a novel carbonaceous adsorbent for removing organic contaminants from aqueous media. Biochars derived from pyrolysis of soybean stover at 300 °C and 700 °C (S-300 and S-700, respectively), and peanut shells at 300 °C and 700 °C (P-300 and P-700, respectively) were utilized as carbonaceous adsorbents to study batch aqueous TCE remediation kinetics. Different rate-based and diffusion-based kinetic models were adopted to understand the TCE adsorption mechanism on biochars. With an equilibrium time of 8-10 h, up to 69 % TCE was removed from water. Biochars produced at 700 °C were more effective than those produced at 300 °C. The P-700 and S-700 had lower molar H/C and O/C versus P-300 and S-300 resulting in high aromaticity and low polarity accompanying with high surface area and high adsorption capacity. The pseudo-second order and intraparticle diffusion models were well fitted to the kinetic data, thereby, indicating that chemisorption and pore diffusion were the dominating mechanisms of TCE adsorption onto biochars.

Original languageEnglish
Pages (from-to)8364-8373
Number of pages10
JournalEnvironmental Science and Pollution Research
Volume20
Issue number12
DOIs
Publication statusPublished - 2013 Apr 23
Externally publishedYes

Fingerprint

Trichloroethylene
trichloroethylene
Soybeans
Adsorption
soybean
shell
adsorption
kinetics
Carbonaceous adsorbents
Kinetics
modeling
Agricultural wastes
Organic pollutants
Groundwater
Chemisorption
Remediation
organic pollutant
pyrolysis
Pyrolysis
remediation

Keywords

  • Black carbon
  • Charcoal
  • Crop residue
  • Proximate analysis
  • Slow pyrolysis
  • Sorption dynamics

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Modeling adsorption kinetics of trichloroethylene onto biochars derived from soybean stover and peanut shell wastes. / Ahmad, Mahtab; Lee, Sang Soo; Oh, Sang Eun; Mohan, Dinesh; Moon, Deok Hyun; Lee, Young Han; Ok, Yong Sik.

In: Environmental Science and Pollution Research, Vol. 20, No. 12, 23.04.2013, p. 8364-8373.

Research output: Contribution to journalArticle

Ahmad, Mahtab ; Lee, Sang Soo ; Oh, Sang Eun ; Mohan, Dinesh ; Moon, Deok Hyun ; Lee, Young Han ; Ok, Yong Sik. / Modeling adsorption kinetics of trichloroethylene onto biochars derived from soybean stover and peanut shell wastes. In: Environmental Science and Pollution Research. 2013 ; Vol. 20, No. 12. pp. 8364-8373.
@article{50d3f74350f3424d9a001e0b27bfe340,
title = "Modeling adsorption kinetics of trichloroethylene onto biochars derived from soybean stover and peanut shell wastes",
abstract = "Trichloroethylene (TCE) is one of the most hazardous organic pollutants in groundwater. Biochar produced from agricultural waste materials could serve as a novel carbonaceous adsorbent for removing organic contaminants from aqueous media. Biochars derived from pyrolysis of soybean stover at 300 °C and 700 °C (S-300 and S-700, respectively), and peanut shells at 300 °C and 700 °C (P-300 and P-700, respectively) were utilized as carbonaceous adsorbents to study batch aqueous TCE remediation kinetics. Different rate-based and diffusion-based kinetic models were adopted to understand the TCE adsorption mechanism on biochars. With an equilibrium time of 8-10 h, up to 69 {\%} TCE was removed from water. Biochars produced at 700 °C were more effective than those produced at 300 °C. The P-700 and S-700 had lower molar H/C and O/C versus P-300 and S-300 resulting in high aromaticity and low polarity accompanying with high surface area and high adsorption capacity. The pseudo-second order and intraparticle diffusion models were well fitted to the kinetic data, thereby, indicating that chemisorption and pore diffusion were the dominating mechanisms of TCE adsorption onto biochars.",
keywords = "Black carbon, Charcoal, Crop residue, Proximate analysis, Slow pyrolysis, Sorption dynamics",
author = "Mahtab Ahmad and Lee, {Sang Soo} and Oh, {Sang Eun} and Dinesh Mohan and Moon, {Deok Hyun} and Lee, {Young Han} and Ok, {Yong Sik}",
year = "2013",
month = "4",
day = "23",
doi = "10.1007/s11356-013-1676-z",
language = "English",
volume = "20",
pages = "8364--8373",
journal = "Environmental Science and Pollution Research",
issn = "0944-1344",
publisher = "Springer Science + Business Media",
number = "12",

}

TY - JOUR

T1 - Modeling adsorption kinetics of trichloroethylene onto biochars derived from soybean stover and peanut shell wastes

AU - Ahmad, Mahtab

AU - Lee, Sang Soo

AU - Oh, Sang Eun

AU - Mohan, Dinesh

AU - Moon, Deok Hyun

AU - Lee, Young Han

AU - Ok, Yong Sik

PY - 2013/4/23

Y1 - 2013/4/23

N2 - Trichloroethylene (TCE) is one of the most hazardous organic pollutants in groundwater. Biochar produced from agricultural waste materials could serve as a novel carbonaceous adsorbent for removing organic contaminants from aqueous media. Biochars derived from pyrolysis of soybean stover at 300 °C and 700 °C (S-300 and S-700, respectively), and peanut shells at 300 °C and 700 °C (P-300 and P-700, respectively) were utilized as carbonaceous adsorbents to study batch aqueous TCE remediation kinetics. Different rate-based and diffusion-based kinetic models were adopted to understand the TCE adsorption mechanism on biochars. With an equilibrium time of 8-10 h, up to 69 % TCE was removed from water. Biochars produced at 700 °C were more effective than those produced at 300 °C. The P-700 and S-700 had lower molar H/C and O/C versus P-300 and S-300 resulting in high aromaticity and low polarity accompanying with high surface area and high adsorption capacity. The pseudo-second order and intraparticle diffusion models were well fitted to the kinetic data, thereby, indicating that chemisorption and pore diffusion were the dominating mechanisms of TCE adsorption onto biochars.

AB - Trichloroethylene (TCE) is one of the most hazardous organic pollutants in groundwater. Biochar produced from agricultural waste materials could serve as a novel carbonaceous adsorbent for removing organic contaminants from aqueous media. Biochars derived from pyrolysis of soybean stover at 300 °C and 700 °C (S-300 and S-700, respectively), and peanut shells at 300 °C and 700 °C (P-300 and P-700, respectively) were utilized as carbonaceous adsorbents to study batch aqueous TCE remediation kinetics. Different rate-based and diffusion-based kinetic models were adopted to understand the TCE adsorption mechanism on biochars. With an equilibrium time of 8-10 h, up to 69 % TCE was removed from water. Biochars produced at 700 °C were more effective than those produced at 300 °C. The P-700 and S-700 had lower molar H/C and O/C versus P-300 and S-300 resulting in high aromaticity and low polarity accompanying with high surface area and high adsorption capacity. The pseudo-second order and intraparticle diffusion models were well fitted to the kinetic data, thereby, indicating that chemisorption and pore diffusion were the dominating mechanisms of TCE adsorption onto biochars.

KW - Black carbon

KW - Charcoal

KW - Crop residue

KW - Proximate analysis

KW - Slow pyrolysis

KW - Sorption dynamics

UR - http://www.scopus.com/inward/record.url?scp=84891149397&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891149397&partnerID=8YFLogxK

U2 - 10.1007/s11356-013-1676-z

DO - 10.1007/s11356-013-1676-z

M3 - Article

C2 - 23608978

AN - SCOPUS:84891149397

VL - 20

SP - 8364

EP - 8373

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

IS - 12

ER -