Cited by 710Adsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsThermochemical Biomass Conversion Processes

Removal of lead from water using biochars prepared from hydrothermal liquefaction of biomass

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Liu, Zhengang, Zhang, Fu-Shen·2009·Journal of Hazardous Materials

Abstract

Hydrothermal conversion of biomass into biofuel could produce a special type of biochar as byproduct. This biochar is quite different from biochar derived from high temperature pyrolysis. In the present study, two biochars, prepared from hydrothermal liquefaction of pinewood (P300) and rice husk (R300), were characterized and investigated for lead removal from aqueous solution. The results indicated that the biochars contained a large amount of oxygen-containing groups on the surface, which were quite effective for lead removal with capacities of 4.25 and 2.40 mg/g for P300 and R300, respectively. The adsorption equilibrium was achieved around 5h. Higher temperature favored the removal capacity implying that the adsorption was an endothermic process. The adsorption data at optimum solution pH 5 could be well described by Langmuir model and the adsorption process was well fitted by pseudo-second-order model. Moreover, it was found that the adsorption was mainly controlled by film diffusion. Thermodynamics analysis suggested that lead adsorption onto the biochars was physical endothermic process.

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Crossref · 10.1016/j.jhazmat.2009.01.085

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Authors
Liu, Z., & Zhang, F.-S.
Affiliations
Chinese Academy of Sciences (CN)
Corresponding author
Zhang, Fu-Shen
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2009-08
Volume
167
Issue
1-3
Pages
933-939
ISSN
0304-3894 (ISSN-L)
OpenAlex
W1985906925
Cited by
710
References
28
Citations by year
2026: 30 · 2025: 32 · 2024: 27 · 2023: 57 · 2022: 58 · 2021: 86 · 2020: 89 · 2019: 48 · 2018: 54 · 2017: 56 · 2016: 38 · 2015: 31 · 2014: 44 · 2013: 31 · 2012: 13
FWCI
9.65
Type
journal article
Language
en
Open access
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
  • Research Center for Eco-Environmental Sciences OpenIR (Chinese Academy of Sciences) (submittedVersion, cc-by-nc-nd)
Funders
National Key Research and Development Program of China (2008BAC32B03, 2007CB407303)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
Keywords
lead removal, biochar, hydrothermal liquefaction, biomass-derived biochar, pine forest, rice husk, heavy metal adsorption, oxygen-containing surface groups, adsorption kinetics, adsorption thermodynamics, film diffusion, Langmuir isotherm, pseudo-second-order kinetics, water treatment
MeSH terms
Adsorption, Energy-Generating Resources, Hot Temperature, Lead, Oryza, Thermodynamics, Water, Water Pollutants, Chemical, Wood, Water Purification, Biomass, Pinus

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