Sorption of mercury (II) and atrazine by biochar, modified biochars and biochar based activated carbon in aqueous solution
Abstract
Corn straw biochar (BC) was used as a precursor to produce Na2S modified biochar (BS), KOH modified biochar (BK) and activated carbon (AC). Experiments were conducted to compare the sorption capacity of these sorbents for aqueous Hg (II) and atrazine existed alone or as a mixture. In comparison to BC, the sorption capacity of BS, BK and AC for single Hg (II) increased by 76.95%, 32.12% and 41.72%, while that for atrazine increased by 38.66%, 46.39% and 47 times, respectively. When Hg (II) and atrazine coexisted in an aqueous solution, competitive sorption was observed on all these sorbents. Sulfur impregnation was an efficient way to enhance the Hg (II) removal due to the formation of HgS precipitate, and oxygen-containing functional groups on the sorbents also contributed to Hg (II) sorption. Activated carbon was the best sorbent for atrazine removal because of its extremely high specific surface area.
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Tan et al. (2016) adsorption capacities of atrazine by biochar, Na2S modified biochar (BS), and KOH modified biochar (BK) were 1.94 mg/g, 2.69 mg/g, and 2.84 mg/g, respectively.
“Furthermore, Tan etal. (2016) revealed the adsorption capacities of atrazine by BC, Na2S modified BC (BS), and KOH modified BC (BK) were 1.94mg/g, 2.69mg/g, and 2.84mg/g, respectively.”
From Review of organic and inorganic pollutants removal by biochar and biochar-based composites (2021) · cites this paper as Tan et al. (2016)
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- Authors
- Tan, G., Sun, W., Xu, Y., Wang, H., & Xu, N.
- Affiliations
- Peking University (CN)
- Institute of Agricultural Resources and Regional Planning (CN)
- Corresponding author
- Xu, Yaru
- Xu, Nan
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2016-07
- Volume
- 211
- Pages
- 727-735
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2314554170
- Cited by
- 388
- References
- 36
- Citations by year
- 2026: 21 · 2025: 40 · 2024: 36 · 2023: 44 · 2022: 55 · 2021: 48 · 2020: 48 · 2019: 44 · 2018: 32 · 2017: 15 · 2016: 5
- FWCI
- 18.94
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation
- National Natural Science Foundation of China
- 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 › Mechanical Engineering › Industrial Gas Emission Control
- Keywords
- biochar, corn straw biochar, potassium hydroxide modification, activated carbon, competitive adsorption, oxygen-containing functional groups, herbicide removal, heavy metal removal, aqueous solutions
- MeSH terms
- Adsorption, Atrazine, Charcoal, Mercury, Solutions, Water Purification
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