Biochar derived from anaerobically digested sugar beet tailings: Characterization and phosphate removal potential
Abstract
Two biochars were produced from anaerobically digested and undigested sugar beet tailings through slow-pyrolysis at 600°C. The digested sugar beet tailing biochar (DSTC) and raw sugar beet tailing biochar (STC) yields were around 45.5% and 36.3% of initial dry weight, respectively. Compared to STC, DSTC had similar pH and surface functional groups, but higher surface area, and its surface was less negatively charged. SEM-EDS and XRD analyses showed that colloidal and nano-sized periclase (MgO) was presented on the surface of DSTC. Laboratory adsorption experiments were conducted to assess the phosphate removal ability of the two biochars, an activated carbon (AC), and three Fe-modified biochar/AC adsorbents. The DSTC showed the highest phosphate removal ability with a removal rate around 73%. Our results suggest that anaerobically digested sugar beet tailings can be used as feedstock materials to produce high quality biochars, which could be used as adsorbents to reclaim phosphate.
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Biochar is produced by thermal decomposition of a wide range of carbon-rich biomass materials including woody materials, agricultural residues such as sugarcane bagasse, livestock manure, and remnants after moderate temperature (350-700 °C) pyrolysis and carbonification of biomass in a reactor with little or no available air.
“Biochar has been considered as a potential surrogate for activated carbon and is produced by thermal decomposition (e.g., slow pyrolysis, fast pyrolysis, hydrothermal carbonization (HTC), flash carbonization, torrefaction and gasification) [93][94][95] of a wide range of carbon-rich biomass materials that includes woody materials, agricultural residues such as sugarcane bagasse, 96 livestock”
From Sustainable hybrid photocatalysts: titania immobilized on carbon materials derived from renewable and biodegradable resources (2016) · cites this paper as [96]
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- Authors
- Yao, Y., Gao, B., Inyang, M., Zimmerman, A. R., Cao, X., Pullammanappallil, P., & Yang, L.
- Affiliations
- University of Florida (US)
- Shanghai Jiao Tong University (CN)
- Corresponding author
- Gao, Bin
- ORCID
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2011-05
- Volume
- 102
- Issue
- 10
- Pages
- 6273-6278
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2090932718
- Cited by
- 608
- References
- 35
- Citations by year
- 2026: 20 · 2025: 34 · 2024: 34 · 2023: 41 · 2022: 38 · 2021: 63 · 2020: 51 · 2019: 55 · 2018: 43 · 2017: 57 · 2016: 56 · 2015: 38 · 2014: 27 · 2013: 29 · 2012: 15
- FWCI
- 50.28
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation
- U.S. Department of Agriculture
- Division of Chemical, Bioengineering, Environmental, and Transport Systems
- Topics
- Physical Sciences › Environmental Science › Waste Management and Disposal › Phosphorus and nutrient management
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Keywords
- biochar, anaerobic digestion, phosphate removal, phosphate adsorption, slow pyrolysis, periclase, magnesium oxide, surface functional groups, iron-modified biochar, activated carbon, agricultural waste valorization
- MeSH terms
- Adsorption, Anaerobiosis, Colloids, Hydrogen-Ion Concentration, Microscopy, Electron, Scanning, Phosphates, Surface Properties, X-Ray Diffraction, Beta vulgaris
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