BIOSORPSI KROM HEKSAVALEN MENGGUNAKAN MIKROALGA AMOBIL DALAM SISTEM KONTINYU

• Main Author: Taruna Utama, Teguh
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/32123
• Institution: Institut Teknologi Bandung

This study describes the biosorption of Cr (VI) using microalgae immobilized in a continuous system. Microalgae consortia are an alternative source of biosorbent which has the potential to remove heavy metals. Optimization of several parameters such as bed depth, flow rate and inlet concentration conducted to determine the biosorption performance in fixed bed column. Increasing bed depth biosorben generate higher removal percentage of Cr (VI) due to more active side the amount of the more active side for biosorption process. Increasing flow rate will reduce the performance of biosorption column due to channeling between beads of biosorbent. While increasing concentration of Cr (VI) will increase uptake value biosorben due to differences solute concentration in the adsorbent with solute sorbate as driving force of biosorption. The adsorption kinetics was analyzed using Adams-Bohart, Thomas, Yoon- Nelson, and Yan kinetic models. The experimental data were plotted to model and well described by Thomas and Yoon-Nelson Models. The maximum adsorption capacity was calculated with Thomas model, Cr(VI) can be removed by immobilized microalgae with maximum uptake value 5,95 mg/gram. For Yoon- Nelson model, a half-saturated adsorbent between Yoon-Nelson models with time experimental data is not much different that this model can describe half the saturated column properly. The data column also tested with BDST Model to know iso-removal of Cr (VI) with the BDST value is 0.31 mg/hours dan the sorption capacity is 105 mg/litre.