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Adsorption of deoxyribonucleic acid (DNA) by willow wood biochars produced at different pyrolysis temperatures

Wang, Congying; Wang, Tao LU ; Li, Wenbin; Yan, Jifeng; Li, Zengbo; Ahmad, Riaz; Herath, Saman K and Zhu, Na (2014) In Biology and Fertility of Soils 50(1). p.87-94
Abstract
Adsorption of DNA by biochars was investigated in the present study. Biochars were produced from air-dried willow wood chips at 300, 400, 500, and 600 A degrees C under limited oxygen supply. The resulting products, referred to as BC300, BC400, BC500, and BC600, respectively, were characterized for their elemental composition, cation exchange capacity (CEC), specific surface areas (SSA), and microporosity. According to a Langmuir isotherm, maximum DNA adsorption capacity of biochars was ranked as BC500 > BC600 > BC400 > BC300. Increasing solution pH (from 4.0 to 9.0) faintly decreased DNA adsorption onto biochars. The addition of Na+, Mg2+, and Ca2+ slightly increased the adsorption of DNA, and the effect decreased by increasing... (More)
Adsorption of DNA by biochars was investigated in the present study. Biochars were produced from air-dried willow wood chips at 300, 400, 500, and 600 A degrees C under limited oxygen supply. The resulting products, referred to as BC300, BC400, BC500, and BC600, respectively, were characterized for their elemental composition, cation exchange capacity (CEC), specific surface areas (SSA), and microporosity. According to a Langmuir isotherm, maximum DNA adsorption capacity of biochars was ranked as BC500 > BC600 > BC400 > BC300. Increasing solution pH (from 4.0 to 9.0) faintly decreased DNA adsorption onto biochars. The addition of Na+, Mg2+, and Ca2+ slightly increased the adsorption of DNA, and the effect decreased by increasing the pyrolysis temperature of biochars, indicating that electrostatic interaction was not the main driving force for DNA adsorption onto those biochars. Correlation analysis showed that SSA and micropore surface area were the main factors influencing DNA adsorption on biochars. (Less)
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type
Contribution to journal
publication status
published
subject
in
Biology and Fertility of Soils
volume
50
issue
1
pages
87 - 94
publisher
Springer
external identifiers
  • scopus:84891555405
ISSN
0178-2762
DOI
10.1007/s00374-013-0836-0
language
English
LU publication?
yes
id
e916f0e8-bf0f-442d-bbde-abed9abbc8ef (old id 8034242)
date added to LUP
2015-10-02 15:01:54
date last changed
2017-09-03 03:16:13
@article{e916f0e8-bf0f-442d-bbde-abed9abbc8ef,
  abstract     = {Adsorption of DNA by biochars was investigated in the present study. Biochars were produced from air-dried willow wood chips at 300, 400, 500, and 600 A degrees C under limited oxygen supply. The resulting products, referred to as BC300, BC400, BC500, and BC600, respectively, were characterized for their elemental composition, cation exchange capacity (CEC), specific surface areas (SSA), and microporosity. According to a Langmuir isotherm, maximum DNA adsorption capacity of biochars was ranked as BC500 > BC600 > BC400 > BC300. Increasing solution pH (from 4.0 to 9.0) faintly decreased DNA adsorption onto biochars. The addition of Na+, Mg2+, and Ca2+ slightly increased the adsorption of DNA, and the effect decreased by increasing the pyrolysis temperature of biochars, indicating that electrostatic interaction was not the main driving force for DNA adsorption onto those biochars. Correlation analysis showed that SSA and micropore surface area were the main factors influencing DNA adsorption on biochars.},
  author       = {Wang, Congying and Wang, Tao and Li, Wenbin and Yan, Jifeng and Li, Zengbo and Ahmad, Riaz and Herath, Saman K and Zhu, Na},
  issn         = {0178-2762},
  language     = {eng},
  number       = {1},
  pages        = {87--94},
  publisher    = {Springer},
  series       = {Biology and Fertility of Soils},
  title        = {Adsorption of deoxyribonucleic acid (DNA) by willow wood biochars produced at different pyrolysis temperatures},
  url          = {http://dx.doi.org/10.1007/s00374-013-0836-0},
  volume       = {50},
  year         = {2014},
}