Cited by 58Adsorption and biosorption for pollutant removalHeavy metals in environmentEnvironmental remediation with nanomaterials

Potential of Punica granatum biochar to adsorb Cu(II) in soil

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Cao, Qinying, Huang, Zhihong, Liu, Shuguang, Wu, Yiping·2019·Scientific Reports

Abstract

Biochar as a promising adsorbent to remove heavy metals has attracted much attention globally. One of the potential adsorbents is biochar derived from punica granatum peels, a growing but often wasted resource in tropical countries. However, the immobilization capacity of punica granatum peel biochar is not known. This study investigated the physicochemical properties of punica granatum peel boichars pyrolyzed at 300 °C and 600 °C (referred as BC300 and BC600), and the efficiency and mechanisms of Cu(II) adsorption of five types of material treatments: BC300, BC600, soil only, and soils with biochar amendment BC300 and BC600, respectively, at the rate of 1% of the soil by weight. The results show that BC300 had higher yield, volatile matter content and organic carbon content, and larger pore diameter, but less ash content, surface area, pH, and cation exchange capacity than BC600. The Cu(II) adsorption capacity onto biochars and soils with biochar were greatly influenced by initial ion concentration and contact time. The Cu(II) adsorption capacity of biochar, independent of pyrolysis temperature, was around 52 mg g−1. The adsorption capacity of the soil amended with biochar nearly doubled (29.85 mg g−1) compared to that of the original soil (14.99 mg g−1), indicating superb synergetic adsorption capacity of the biochar-amended soils. The adsorption isotherms showed monolayer adsorption of Cu(II) on biochar, and co-existence of monolayer and multilayer adsorption in soils with or without biochar amendment. Results also suggest that the adsorption process is spontaneous and endothermic, and the rate-limiting phase of the sorption process is primarily chemical. This study demonstrates punica granatum peel biochar has a great potential as an adsorbent for Cu(II) removal in soil.

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  • TPW, PPW and BPW may be used as soil amendment.

    “soil amendment [[17], [18], [19]]”

    From Tangerine, banana and pomegranate peels valorisation for sustainable environment: A review (2021) · cites this paper as [17]

    The Experimental design section describes adding pomegranate-peel biochar to soil, and Chemical characterization reports changes in the amended soil’s properties. This supports the possibility of using that biochar as a soil amendment, but the paper does not establish the same use for TPW or BPW, or for unprocessed PPW. (LLM, conf=0.85)

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Authors
Cao, Q., Huang, Z., Liu, S., & Wu, Y.
Affiliations
  • Central South University of Forestry and Technology (CN)
  • Xi'an Jiaotong University (CN)
Corresponding author
Huang, Zhihong
Venue
Scientific Reports
Published
2019-07-31
Volume
9
Issue
1
Pages
11116-11116
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2965264667
Cited by
58
References
108
Citations by year
2026: 6 · 2025: 11 · 2024: 10 · 2023: 8 · 2022: 10 · 2021: 6 · 2020: 7
FWCI
2.08
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Open fund project of the innovation platform of Hunan Provincial Department of Education, No. 17K108
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
biochar, copper(II) adsorption, heavy metal removal, soil amendment, pyrolysis temperature, biochar physicochemical properties, adsorption isotherms, chemisorption, fruit waste valorization
MeSH terms
Pomegranate, Adsorption, Carbon, Cations, Charcoal, Copper, Soil, Soil Pollutants, Metals, Heavy

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