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Charity Aghariagbonse Osagiede and Felix Aibuedefe Aisien. Rubber Seed Shell Biochar Sulphonation: A Process Optimization and Conditions’ Effect Analysis. JETE [Internet]. 2020 Jun. 13 [cited 2025 Apr. 14];4(2). Available from: https://journals.nipes.org/index.php/jete/article/view/517