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      Agricultural Waste Can Solve Environmental Problems in Democratic Republic of the Congo : The Use of Agricultural Waste Translated title: Les Déchets Agricoles Peuvent Résoudre les Problèmes Environnementaux en République Démocratique du Congo : L'utilisation des Déchets Agricoles

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      Adsorption, Hexavalent chromium, Mining companies, Sugar beet pulp, Wastewater
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            Abstract

            The industrial mining factories in Democratic Republic of the Congo (D.R.C.) discharge effluents containing hexavalent chromium and this situation can be very harmful to the environment. So the hexavalent chromium contained in wastewater should be removed in order to prevent environmental problems. Therefore, the present work aims to investigate the use of sugar beet pulp available in D.R.C. for the removal of hexavalent chromium from wastewater. Variables studied were chromium initial concentration (10–50mg/L), pH (2–9), solid/liquid ratio (0.25/100–3/100), and contact time (30–180min). All the experiments were performed at room temperature and average results were reported. The highest percent removals for 10 ppm concentration (90.53%) and 50 ppm concentration (76.34%) were achieved at the following conditions: pH 2, contact time 90 min, and solid/liquid ratios of 2 g/100mL and 3 g/100mL respectively

            Les usines minières industrielles en République Démocratique du Congo (R.D.C.) rejettent des effluents contenant du chrome hexavalent et cette situation peut être très nocive pour l'environnement. Ainsi, le chrome hexavalent contenu dans les eaux usées doit être éliminé afin de prévenir les problèmes environnementaux. Par conséquent, le présent travail vise à étudier l'utilisation de la pulpe de betterave à sucre disponible en R.D.C. pour l'élimination du chrome hexavalent des eaux usées. Les variables étudiées étaient la concentration initiale de chrome (10–50mg/L), le pH (2–9), le rapport solide/liquide (0,25/100–3/100) et le temps de contact (30–180min). Toutes les expériences ont été réalisées à température ambiante et les résultats moyens ont été rapportés. Les pourcentages d'élimination les plus élevés pour une concentration de 10 ppm (90,53 %) et une concentration de 50 ppm (76,34 %) ont été obtenus dans les conditions suivantes : pH 2, temps de contact de 90 min et rapports solide/liquide de 2 g/100 ml et 3 g/100 ml respectivement

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            ScienceOpen Posters
            ScienceOpen
            24 September 2022
            Affiliations
            [1 ] Department of Chemical Engineering, Faculty of Engineering, Alexandria University, Alexandria, Egypt
            Author notes
            Author information
            https://orcid.org/0000-0002-0094-7873
            Article
            10.14293/S2199-1006.1.SOR-.PPCE5KK.v1
            c18c68e7-b8c8-4e32-95b4-b909f875231a

            This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .

            History
            : 24 September 2022

            The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
            Earth & Environmental sciences,Chemistry,Engineering
            Sugar beet pulp,Mining companies,Adsorption,Hexavalent chromium,Wastewater

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