Year: 2025
Type: article
Abstract: This research evaluated the effec veness of cocoa husk (Theobroma cacao L.) as a bioadsorbent for removing heavy metals from an auto service lubricant wastewater.To produce flour par cles with sizes of 850 µm and 1 mm, cocoa husks were dehydrated, ground and sieved.Pb and Al levels in the effluent were ini ally 0.017 ppm and 1.016 ppm, correspondingly.Four different treatments, each with a different par cle diameter (850 µm and 1 mm) and dosage of cocoa husk (10 and 15 g), were evaluated using a Completely Randomized Design (CRD) with a 2 2 factorial arrangement.These tests were carried out with a pH of 4 and a 6-hour exposure period.The ability of each treatment to extract Pb and Al from the wastewater was remarkable.The greatest removal effec veness, however, was shown by treatment T2, which used 15 g of 850 µm cocoa husk flour and reduced the concentra on of Pb by 94.12% and the concentra on of Al by 46.49%.These results indicate cocoa husk flour's significant poten al as a bioadsorbent for the efficient treatment of wastewater polluted with heavy metals.
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7140898648
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