Produção de um novo material adsorvente a partir de resíduos agroindustriais e comparação com adsorvente comercial para remoção de contaminantes emergentes

Abstract

An adsorbent was developed from agro-industrial waste derived from the shells of Moringa oleifera Lam seeds, using the biochar process, as it is a sustainable, low-cost and easy-to-operate process. The main objective of this study was to compare a commercial activated carbon with a biosorbent developed from agro-industrial waste using the biochar method. For comparison purposes, a commercial adsorbent, babassu coconut activated carbon, was used. Both materials were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, zeta potential and N2 physisorption, where their morphologies, chemical compositions and textural analyses that prove the adsorption capacity of each material were presented; a cost study was evaluated, since the production of the materials occurred; for both studies, the equilibrium study of the materials was analyzed using the following contaminants, metformin, diuron, methylene blue and lead. Aiming to study the use of agro-industrial waste as a new adsorbent material and an average removal for all contaminants around 97 - 99%. Thus, the new adsorbent developed has many interactions with the contaminants studied and allows its use on a large scale, since its production cost was low.