CD Skripsi
Biosorpsi Kromium (Cr) Pada Limbah Cair Industri Elektroplating Menggunakan Biomassa Ragi Roti (Saccharomyces Cerevisiae)
Electroplating industry is one of industry that produce waste water containing heavy metals. Among the heavy metals contained in the waste water is Chromium (Cr) which have a high toxicity. One technology that can be applied to set aside Cr in wastewater is by biosorption method using biomass derived from baker's yeast (Saccharomyces cerevisiae). This study aimed to study the ability of biomass yeast (Saccharomyces cerevisiae) in designated Cr in weight variation biosorbent is 0.25; 0.5 and 0.75 grams, 80 mesh size; 100 and 140 and the contact time 1; 2; 3 and 4 hours. The results showed the highest removal efficiency of Cr occurs in biosorbent weight of 0.75 grams in a size of 80 mesh and a contact time of 4 hours with an efficiency of 54.7%. Biosorption process showed that type of adsorption isotherms obtained are assumed Langmuir isotherm formed layer is a single layer (monolayer) with R2 values of 0.8819 and 3.3258 values adsorption capacity that is mg Cr / gr biosorbent. The results of SEM analysis showed the presence of differences in morphology on the surface of the sample before and after biosorption process.
Keywords: biosorption, Saccharomyces Cerevisiae, Cr, mesh size, contact time, heavy metals
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