Evaluation of Cadmium Removal in an Aqueous Solution by Biosorption in a Batch System with Banana, Peanut, and Orange Husks

• DOI: 10.3390/environments12040097
• Publication Date: 2025-03-21T13:09:07Z
• Authors: Dayana Odette Ari...; Sergio Arturo Gam...; Gabriela Roa-Morales; Alfredo Rafael Vi...; Alejandro Parada-...; Patricia Balderas...
• Keywords: Biosorption; Husk

At present, the amount of heavy metals in some aquifers exceeds limits established by standards, especially developing countries. Cadmium is present high concentrations aquifers; contact with cadmium can lead to adverse health effects. Adsorption one most efficient and low-cost methods currently used separate from water systems. In order obtain a sustainable metal adsorption system, abundant, low-cost, biodegradable, easy-to-treat organic waste compounds were sought. Three biosorbents chosen: orange, peanut, banana peel, which, due their functional groups, attract positive ions form bond that allows them be absorbed separated aqueous solution. The presence groups such as -OH, -CO, -COO−, -N-H found main responsible for biosorption (FTIR). Square wave voltammetry was analyze an It systems best capacities untreated peanut peel (284.2 mg/g), orange (275.5 treated (229.21 mg/g). Treatment peels uptake not recommended.