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Valorization of cassava peelings into biochar: Physical and chemical characterizations of biochar prepared for agricultural purposes
Open accessAbstract
The sustainable management of waste generated by human activities is now a global concern. The valorization of waste by pyrolysis is a recycling method aiming at obtaining a biochar which can contribute to improve the fertility of soils and to limit the use of chemical fertilizers. It is in this perspective that the present study aims to valorize cassava peelings into biochar. Slow pyrolysis was applied for biochar production using an artisanal oven at 400 °C and the obtained biochar was characterized. FTIR analysis revealed that cassava peelings biochar consists of hydrophilic surface functional groups (mainly -OH and -COOH). EDX analysis showed that the biochar is mainly composed of carbon (78.65%), oxygen (18.65%), phosphorus (0.26%), potassium (1.91%), calcium (0.30%), magnesium (0.13%), silicon (0.10%), and nitrogen (1.14%), was determined by Kjeldahl method. SEM micrographs revealed that the biochar has a rough and porous surface. The BET surface area and BJH average pore diameter of the biochar are 341.11 m2/g and 1.44 nm, respectively. X-ray diffraction showed that the biochar is amorphous and consists largely of calcite (CaCO3). C/N ratios of 68.51; O/C of 0.23 and H/Corg of 0.03 were also obtained. These results show that the biochar produced has acceptable qualities and can be used as a soil amendment.
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“As in our case, a comparison of the results reported by other authors regarding biochar obtained from PR and CP clearly indicates that, although the PR biochar does contain pores, its porosity tends to be much lower than the CP biochar.”
From Production of Biochar from Plantain Rachis and Cassava Peel Towards Sustainable Management of Caribbean Agricultural Waste (2025) · cites this paper as [29]
In the citing paper
“In a related study, I. Maman Hamissou et al. investigated the synthesis of biochar from CP pyrolyzed at 400 ◦ C. Their analysis revealed an average pore diameter of 1.44 nm, with a total pore volume of 0.8 cm 3 /g as determined by the BJH method [29].”
From Production of Biochar from Plantain Rachis and Cassava Peel Towards Sustainable Management of Caribbean Agricultural Waste (2025) · cites this paper as [29]
In the citing paper
“Furthermore, the nitrogen adsorption/desorption analysis conducted by these authors demonstrated the simultaneous presence of micropores and mesopores in their samples.”
From Production of Biochar from Plantain Rachis and Cassava Peel Towards Sustainable Management of Caribbean Agricultural Waste (2025) · cites this paper as [29]
In the citing paper
“The porous morphology of CP biochar has also been reported by other authors [28,29].”
From Production of Biochar from Plantain Rachis and Cassava Peel Towards Sustainable Management of Caribbean Agricultural Waste (2025) · cites this paper as [29]
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Metadata
- Authors
- Hamissou, I. G. M., Appiah, K. E. K., Sylvie, K. A. T., Ousmaila, S. M., Casimir, B. Y., & Benjamin, Y. K.
- Affiliations
- Institut National Polytechnique Félix Houphouët-Boigny (CI)
- Venue
- Scientific African
- Publisher
- Elsevier BV
- Published
- 2023-07
- Volume
- 20
- Pages
- e01737
- ISSN
- 2468-2276 (ISSN-L)
- OpenAlex
- W4378594147
- Cited by
- 20
- References
- 38
- Citations by year
- 2026: 2 · 2025: 8 · 2024: 9 · 2023: 1
- FWCI
- 1.58
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Scientific African (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Union Europeenne
- Agence Française de Développement
- Topics
- Physical Sciences › Energy › Fuel Technology › Thermochemical Biomass Conversion Processes
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- cassava peeling, biochar, slow pyrolysis, agricultural waste valorization, soil amendment, biochar physicochemical properties, surface functional groups, porous carbon, C/N ratio, calcite
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