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Hydrometallurgical extraction of zinc from wastes: optimization, feasibility and practical sustainable approach
Article
Full-text available
• Oct 2025
• Hafida Boutefnouchet
• Ranim Bouzina
• Benouis Bornia
• [...]
• Said Mechachti
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This research proposes a practical method for extracting zinc from leaching residues at ALZINC Ghazaouet - Tlemcen (Algeria), which can improve the yield of waste recovery during the wet treatment of zinc ore. The quality of the blende and calcine (grilled) in terms of elemental chemical composition was identified using X-ray fluorescence (XRF) and...
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Cost-Effective Walnut Shell Biosorbent for Efficient Cr(VI) Removal from Water: Batch Adsorption and Optimization Using RSM-BBD
Article
Full-text available
• Sep 2024
• Sep 2024
• Tobbi Ouafa
• Hattab Zhour
• Hafida Boutefnouchet
• [...]
• Ridha Djellabi
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The conversion or recycling of waste materials into usable products is a sustainable and ecologically benignstrategy, aligning with sustainable development and circular economy principles. This study presents astraightforward and cost-effective method for transforming walnut shells, commonly found in agricultural waste,into a biosorbent material hi...
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Sulfate Resistant Cement (SRC) is an alternative material to Portland cement designed to improve the performance of concrete in areas where sulfate attack may be expected. The sulfate resistance of Portland cement depends on its tricalcium aluminate (C3A) content. The latter must be at least less than 5% to avoid the formation of ‘secondary’ ettrin..
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