TY - JOUR
T1 - Adsorption of gold from aqueous systems using microbial thermophilic proteins
AU - Kasmiarno, Laksmi Dewi
AU - Chang, Jo Shu
N1 - Publisher Copyright:
© 2020 Published by ITB Journal Publisher,.
PY - 2020
Y1 - 2020
N2 - A precious metal such as gold can be obtained from mining. Metals low concentrations at geothermal sites or in industrial waste are difficult to gausing the conventional mining process. Alternative approaches for recoverinmetals from dilute solutions have been developed, such as biosorption, i.adsorption using microorganisms or their derivatives. In this study, gold in aaqueous system was recovered via biosorption using proteins produced from aisolated thermophilic bacterial strain. Modified Thermus enhanced medium wused as the medium to improve protein production from the thermophilbacterial strain. The microbial proteins showed effective conditions for Au3+ ioadsorption. The optimum adsorption conditions for Au ions occurred at pH with an adsorption capacity of 482.0 mg/g protein. The metal ion adsorptiocapacity increased with increasing temperature. The adsorption isotherm wconducted at room temperature, because the Au ions could be well fitted by thFreundlich isotherm equation with qmax at 527.229 mg/g protein.
AB - A precious metal such as gold can be obtained from mining. Metals low concentrations at geothermal sites or in industrial waste are difficult to gausing the conventional mining process. Alternative approaches for recoverinmetals from dilute solutions have been developed, such as biosorption, i.adsorption using microorganisms or their derivatives. In this study, gold in aaqueous system was recovered via biosorption using proteins produced from aisolated thermophilic bacterial strain. Modified Thermus enhanced medium wused as the medium to improve protein production from the thermophilbacterial strain. The microbial proteins showed effective conditions for Au3+ ioadsorption. The optimum adsorption conditions for Au ions occurred at pH with an adsorption capacity of 482.0 mg/g protein. The metal ion adsorptiocapacity increased with increasing temperature. The adsorption isotherm wconducted at room temperature, because the Au ions could be well fitted by thFreundlich isotherm equation with qmax at 527.229 mg/g protein.
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U2 - 10.5614/j.eng.technol.sci.2020.52.1.9
DO - 10.5614/j.eng.technol.sci.2020.52.1.9
M3 - Article
AN - SCOPUS:85081175399
VL - 52
SP - 121
EP - 135
JO - Journal of Engineering and Technological Sciences
JF - Journal of Engineering and Technological Sciences
SN - 2337-5779
IS - 1
ER -