Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste
Abstract Access to pure and clean water is an upcoming challenge globally due to increased pollution by household waste and industrial effluents, specifically artificial dyes, which are not biodegradable and pose toxicity. Low-cost, mass-producible, and efficient technologies, particularly in develo...
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Nature Portfolio
2025-08-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-14133-6 |
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| author | Ghenwa Kataya May Issa Adnan Badran David Cornu Mikhael Bechelany Salah Jellali Mejdi Jeguirim Akram Hijazi |
| author_facet | Ghenwa Kataya May Issa Adnan Badran David Cornu Mikhael Bechelany Salah Jellali Mejdi Jeguirim Akram Hijazi |
| author_sort | Ghenwa Kataya |
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| description | Abstract Access to pure and clean water is an upcoming challenge globally due to increased pollution by household waste and industrial effluents, specifically artificial dyes, which are not biodegradable and pose toxicity. Low-cost, mass-producible, and efficient technologies, particularly in developing environments, are highly needed. In this study, Kitchen waste derived biochar was prepared from orange peels (OP), potato peels (PP), banana peels (BP), and coffee residue (CR) via pyrolysis in a muffle furnace at 400 °C for 1 h. The prepared biochar was characterized by BET surface area analysis and Fourier Transform Infrared spectroscopy (FTIR). Low-cost kitchen waste derived biochar (KWDB)-sand composite filter material was developed as an eco-friendly adsorbent for the removal of a cationic Methylene Blue (MB) and an anionic dye Methyl Orange (MO) from aqueous solutions . Systematic research on contact time (0.5 to 24 h) and initial dye concentration (5–25 mg/L for MO and 10–180 mg/L for MB) was conducted. KWDB had extremely high and constant removal efficiency of a maximum of 99.5% for MB, while removal of MO was contact time dependent and had the following highest removal of 29% after 24 h. Higher initial dye concentration resulted in greater adsorption capacities. Langmuir isotherm analysis gave maximum adsorption capacities of 25.15 mg/g for MO and 30.40 mg/g for MB, which are greater than for most of the other biochars. Isotherm modeling further revealed that MO adsorption would be according to a multilayer, heterogeneous mode and MB adsorption according to a monolayer mode. This biochar-based filter is an efficient and scalable treatment system for water, particularly in situations with limited infrastructure, in which locally produced filters can be quickly implemented as part of inexpensive decentralized treatment systems. These findings confirm the design of biochar-enhanced filtration modules tailored for specific dye pollutants and environmental settings. |
| format | Article |
| id | doaj-art-b10edb9960ba4d27bfc77b82b72abca7 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-b10edb9960ba4d27bfc77b82b72abca72025-08-20T04:01:51ZengNature PortfolioScientific Reports2045-23222025-08-0115111410.1038/s41598-025-14133-6Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen wasteGhenwa Kataya0May Issa1Adnan Badran2David Cornu3Mikhael Bechelany4Salah Jellali5Mejdi Jeguirim6Akram Hijazi7Doctoral School of Science and Technology, Research Platform for Environmental Science (PRASE), Lebanese UniversityDepartment of Environment, Faculty of Agriculture and Veterinary Sciences, Lebanese UniversityDepartment of Nutrition, University of PetraInstitut Européen Des Membranes, IEM – UMR 5635, University of Montpellier, CNRS, ENSCMInstitut Européen Des Membranes, IEM – UMR 5635, University of Montpellier, CNRS, ENSCMCentre for Environmental Studies and Research, Sultan Qaboos UniversityThe Institute of Materials Science of Mulhouse (IS2M), University of Haute Alsace, University of Strasbourg, CNRS, UMR 7361Doctoral School of Science and Technology, Research Platform for Environmental Science (PRASE), Lebanese UniversityAbstract Access to pure and clean water is an upcoming challenge globally due to increased pollution by household waste and industrial effluents, specifically artificial dyes, which are not biodegradable and pose toxicity. Low-cost, mass-producible, and efficient technologies, particularly in developing environments, are highly needed. In this study, Kitchen waste derived biochar was prepared from orange peels (OP), potato peels (PP), banana peels (BP), and coffee residue (CR) via pyrolysis in a muffle furnace at 400 °C for 1 h. The prepared biochar was characterized by BET surface area analysis and Fourier Transform Infrared spectroscopy (FTIR). Low-cost kitchen waste derived biochar (KWDB)-sand composite filter material was developed as an eco-friendly adsorbent for the removal of a cationic Methylene Blue (MB) and an anionic dye Methyl Orange (MO) from aqueous solutions . Systematic research on contact time (0.5 to 24 h) and initial dye concentration (5–25 mg/L for MO and 10–180 mg/L for MB) was conducted. KWDB had extremely high and constant removal efficiency of a maximum of 99.5% for MB, while removal of MO was contact time dependent and had the following highest removal of 29% after 24 h. Higher initial dye concentration resulted in greater adsorption capacities. Langmuir isotherm analysis gave maximum adsorption capacities of 25.15 mg/g for MO and 30.40 mg/g for MB, which are greater than for most of the other biochars. Isotherm modeling further revealed that MO adsorption would be according to a multilayer, heterogeneous mode and MB adsorption according to a monolayer mode. This biochar-based filter is an efficient and scalable treatment system for water, particularly in situations with limited infrastructure, in which locally produced filters can be quickly implemented as part of inexpensive decentralized treatment systems. These findings confirm the design of biochar-enhanced filtration modules tailored for specific dye pollutants and environmental settings.https://doi.org/10.1038/s41598-025-14133-6Kitchen wastesBiocharDyeColumnAdsorption |
| spellingShingle | Ghenwa Kataya May Issa Adnan Badran David Cornu Mikhael Bechelany Salah Jellali Mejdi Jeguirim Akram Hijazi Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste Scientific Reports Kitchen wastes Biochar Dye Column Adsorption |
| title | Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste |
| title_full | Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste |
| title_fullStr | Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste |
| title_full_unstemmed | Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste |
| title_short | Dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste |
| title_sort | dynamic removal of methylene blue and methyl orange from water using biochar derived from kitchen waste |
| topic | Kitchen wastes Biochar Dye Column Adsorption |
| url | https://doi.org/10.1038/s41598-025-14133-6 |
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