Optimasi Kadar Awal, Waktu Kontak dan Berat Biomassa pada Proses Biosorpsi Cu2+ Menggunakan Cangkang Lorjuk

Abstract

Abstract Background: Kerang pisau (Solen vagina) shell has the potential to cause environmental pollution, but can be utilized as a biosorbent in the absorption of heavy metals, especially Cu because the shells generally contain CaCO3 and chitin. Several variables determine to influence the biosorption process: initial metal concentration, biosorbent mass, and contact time. Objective: To determine the effect of initial Cu (II) concentration, biosorbent mass, and contact time on the biosorption process through data on the percentage of efficiency and adsorption capacity. Methods: The biosorption process is carried out in a variety of parameters by entering the biosorbent and Cu (II) solution in the column, according to each variation that has been determined and filtered. Quantitative determination of Cu (II) levels on the biosorption results using an Atomic Absorption Spectrophotometer (AAS). Results: The biosorbent contained Cu (II) 0.0220 mg/g that used as a correction factor. The optimal initial concentration of Cu (II) is 100 mg/L with an efficiency percentage of (98.47 + 0.19)% and adsorption capacity (630.37 + 1.2)ug/g, while the optimal result for contact time is 120 minutes with an efficiency percentage of (90.78 + 0.25)%. The optimal biosorbent mass is 2 g based on percentage efficiency of (97.69 + 0.1)%. Conclusion: Kerang pisau (Solen vagina) can be used as an effective biosorbent for copper (Cu) adsorption from aqueous media. The best optimization results for the factors used in Cu (II) biosorption process are an initial concentration of 100 mg/L, 2 g biosorbent mass, and 120 minutes contact time. Keywords: kerang pisau (Solen vagina), biosorption, copper (Cu2+), AAS