Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues
Purpose The role of cocoa pod husk waste in soil cadmium contamination has been largely overlooked. Hence, this study aims to provide a strategy for the management of cocoa pod husk waste when representing a pollution menace for cocoa plantations.Method Cocoa pod husks waste was subjected to compost...
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| Format: | Article |
| Language: | English |
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OICC Press
2022-03-01
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| Series: | International Journal of Recycling of Organic Waste in Agriculture |
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| Online Access: | http://ijrowa.khuisf.ac.ir/article_686239_48c5e2fdd1ea04ec0e297d8c47a10009.pdf |
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| author | Diego Armando Pinzon-Nuñez Carlos Alberto Adarme-Duran Luz Vargas-Fiallo Nelson Rodriguez-Lopez Carlos Alberto Rios-Reyes |
| author_facet | Diego Armando Pinzon-Nuñez Carlos Alberto Adarme-Duran Luz Vargas-Fiallo Nelson Rodriguez-Lopez Carlos Alberto Rios-Reyes |
| author_sort | Diego Armando Pinzon-Nuñez |
| collection | DOAJ |
| description | Purpose The role of cocoa pod husk waste in soil cadmium contamination has been largely overlooked. Hence, this study aims to provide a strategy for the management of cocoa pod husk waste when representing a pollution menace for cocoa plantations.Method Cocoa pod husks waste was subjected to composting and pyrolysis for decreasing the heavy metal content. Biochar and compost were characterized using SEM-EDS, and FTIR-ATR. Macro and micronutrients (Mg, K, Zn, Fe, Cu, Zn, Mn, and Na), and Cd were measured by atomic absorption spectroscopy (AAS). Sorption experiments and soil incubation experiments for two months were also carried out looking for an application of CPH materials in Cd sorption and remediation.Results Pyrolysis showed more effectiveness for Cd reduction in cocoa pod husk waste (90%) than composting (66%), 700 ℃ was the optimal temperature. Equilibrium isotherm experiments showed maximum Cd adsorption of 21.58 mg g-1 for Bc700 in solution. Biochar showed a small reduction of available Cd in naturally contaminated soil. Both materials have the potential to be used as organic fertilizer because of their high nutrient contents.Conclusion Biochar is an alternative to compost for the management of post-harvest cocoa wastes contaminated with Cd. |
| format | Article |
| id | doaj-art-b27772e106d747f3ae1947af7849bfca |
| institution | Kabale University |
| issn | 2195-3228 2251-7715 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | OICC Press |
| record_format | Article |
| series | International Journal of Recycling of Organic Waste in Agriculture |
| spelling | doaj-art-b27772e106d747f3ae1947af7849bfca2025-02-03T00:39:24ZengOICC PressInternational Journal of Recycling of Organic Waste in Agriculture2195-32282251-77152022-03-0111110111510.30486/ijrowa.2021.1920124.1192686239Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residuesDiego Armando Pinzon-Nuñez0Carlos Alberto Adarme-Duran1Luz Vargas-Fiallo2Nelson Rodriguez-Lopez3Carlos Alberto Rios-Reyes4School of Geology, Universidad Industrial de Santander, Bucaramanga, ColombiaSchool of Chemistry, Universidad Industrial de Santander, Bucaramanga, ColombiaSchool of Chemistry, Universidad Industrial de Santander, Bucaramanga, ColombiaSchool of Biology, Universidad Industrial de Santander, Bucaramanga, ColombiaSchool of Geology, Universidad Industrial de Santander, Bucaramanga, ColombiaPurpose The role of cocoa pod husk waste in soil cadmium contamination has been largely overlooked. Hence, this study aims to provide a strategy for the management of cocoa pod husk waste when representing a pollution menace for cocoa plantations.Method Cocoa pod husks waste was subjected to composting and pyrolysis for decreasing the heavy metal content. Biochar and compost were characterized using SEM-EDS, and FTIR-ATR. Macro and micronutrients (Mg, K, Zn, Fe, Cu, Zn, Mn, and Na), and Cd were measured by atomic absorption spectroscopy (AAS). Sorption experiments and soil incubation experiments for two months were also carried out looking for an application of CPH materials in Cd sorption and remediation.Results Pyrolysis showed more effectiveness for Cd reduction in cocoa pod husk waste (90%) than composting (66%), 700 ℃ was the optimal temperature. Equilibrium isotherm experiments showed maximum Cd adsorption of 21.58 mg g-1 for Bc700 in solution. Biochar showed a small reduction of available Cd in naturally contaminated soil. Both materials have the potential to be used as organic fertilizer because of their high nutrient contents.Conclusion Biochar is an alternative to compost for the management of post-harvest cocoa wastes contaminated with Cd.http://ijrowa.khuisf.ac.ir/article_686239_48c5e2fdd1ea04ec0e297d8c47a10009.pdfbiomass valorizationpyrolysiscompostingsoil pollution: sustainable agriculture |
| spellingShingle | Diego Armando Pinzon-Nuñez Carlos Alberto Adarme-Duran Luz Vargas-Fiallo Nelson Rodriguez-Lopez Carlos Alberto Rios-Reyes Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues International Journal of Recycling of Organic Waste in Agriculture biomass valorization pyrolysis composting soil pollution: sustainable agriculture |
| title | Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues |
| title_full | Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues |
| title_fullStr | Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues |
| title_full_unstemmed | Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues |
| title_short | Biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues |
| title_sort | biochar as a waste management strategy for cadmium contaminated cocoa pod husk residues |
| topic | biomass valorization pyrolysis composting soil pollution: sustainable agriculture |
| url | http://ijrowa.khuisf.ac.ir/article_686239_48c5e2fdd1ea04ec0e297d8c47a10009.pdf |
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