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Cited by 306Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsCoagulation and Flocculation Studies

The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.

Biochar properties and lead(II) adsorption capacity depend on feedstock type, pyrolysis temperature, and steam activation

Kwak, Jin-Hyeob, Islam, Md Shahinoor, Wang, Siyuan, Messele, Selamawit Ashagre, Naeth, M. Anne, El-Din, Mohamed Gamal, Chang, Scott X.·2019·Chemosphere
DOI 10.1016/j.chemosphere.2019.05.128
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Abstract

Biochar is a promising material for facilitating the reclamation of oil sands process water (OSPW); however, how biochar properties can be optimized for metal removal from OSPW is not well studied. This study was conducted to determine relationships among feedstock type, pyrolysis condition, biochar property, and lead(II) adsorption capacity to demonstrate the potential use of biochar for metal removal from a synthetic OSPW. Sawdust, canola and wheat straw, and manure pellet were pyrolyzed at 300, 500, and 700 °C, with or without steam activation. Increasing pyrolysis temperature increased, with a few exceptions, biochar pH, surface area, and carbon content, but decreased hydrogen and oxygen contents and surface functional groups. Steam activation increased surface area but did not affect other properties. For non-steam-activated biochars, canola and wheat straw biochars produced at 700 °C had the highest lead(II) adsorption capacity (Q max_Pb), at 108 and 109 mg g-1, respectively. Increasing the pyrolysis temperature increased Q max_Pb due to increased biochar pH, ash content, and surface area by increasing precipitation, ion exchange, and inner-sphere complexation of lead(II). Steam activation increased lead(II) adsorption capacity for most biochars mainly due to the increased surface area, with the highest Q max_Pb at 195 mg g-1 for canola straw biochar pyrolyzed at 700 °C with steam activation. The adsorption with time followed a pseudo-second order kinetic model. The results of this study will help select most effective biochars that can be produced from locally available agricultural or forestry byproducts that are optimized for metal removal from synthetic OSPW.

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Research works printed but not linked: 2

  1. Byrne, 1995, Chapter 1: introductory overview
  2. Freundlich, 1906, Over the adsorption in solution, J. Phys. Chem., 57, 385

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Metadata

Authors
Kwak, J.-H., Islam, M. S., Wang, S., Messele, S. A., Naeth, M. A., El-Din, M. G., & Chang, S. X.
Affiliations
University of Alberta (CA)
Corresponding author
Chang, Scott X.
ORCID
Venue
Chemosphere
Publisher
Elsevier BV
Published
2019-09
Volume
231
Pages
393-404
ISSN
0045-6535 (ISSN-L)
DOI
10.1016/j.chemosphere.2019.05.128
OpenAlex
W2945650443
Cited by
306
References
62
Citations by year
2026: 27 · 2025: 35 · 2024: 50 · 2023: 51 · 2022: 54 · 2021: 47 · 2020: 35 · 2019: 7
FWCI
12.93
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • China Scholarship Council
  • Canada First Research Excellence Fund
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
Keywords
biochar, lead adsorption, oil sands process-affected water, pyrolysis temperature, steam activation, feedstock type, sawdust, canola straw, wheat straw, metal removal, pseudo-second-order kinetics, surface area, ion exchange, inner-sphere complexation, agricultural by-products
MeSH terms
Pyrolysis, Adsorption, Agriculture, Carbon, Charcoal, Lead, Manure, Models, Chemical, Steam, Temperature, Triticum, Wood, Oil and Gas Fields

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