Possible mechanism of gallium bioleaching from gallium nitride (GAN) by Arthrobacter creatinolyticus: Role of amino acids/peptides/proteins bindings with gallium

Sirikan Maneesuwannarat; Pattrarat Teamkao; Alisa S. Vangnai; Mitsuo Yamashita; Paitip Thiravetyan

doi:10.1016/j.psep.2016.06.036

Possible mechanism of gallium bioleaching from gallium nitride (GAN) by Arthrobacter creatinolyticus: Role of amino acids/peptides/proteins bindings with gallium

Sirikan Maneesuwannarat, Pattrarat Teamkao, Alisa S. Vangnai, Mitsuo Yamashita, Paitip Thiravetyan

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The objectives of this work were to screen and characterize heterotrophic bacteria for gallium nitride (GaN) leaching; and to study the involved mechanism of bacterial leaching of Ga from GaN. Ga in the form of GaN has been extensively used as a semiconductor substrate material. The advantage of bioleaching for gallium recovery is the fact that it is a safer, environmentally-friendly method and includes energy-saving processes, which can leach metals at relatively low concentrations. Three bacterial isolates were isolated from cadmium-, and arsenic-contaminated soil in the presence of GaN. NKS4 showed the highest efficiency in Ga leaching at approximately 18% after 15 days, and the system pH was 9. The analysis of 16S rDNA sequences indicated that strain NKS4 was characterized and identified as Arthrobacter creatinolyticus (A. creatinolyticus). Further investigation revealed that the ability of Ga leaching from GaN by this bacterium involved amino acids. Fourier transform infrared spectroscopy (FTIR) was used to investigate the interaction of Ga and amino acids/peptides/proteins which were secreted from this bacteria.

Original language	English
Pages (from-to)	36-45
Number of pages	10
Journal	Process Safety and Environmental Protection
Volume	103
DOIs	https://doi.org/10.1016/j.psep.2016.06.036
Publication status	Published - 2016 Sep 1

Keywords

Arthrobacter creatinolyticus
Bioleaching
Electronic waste
Gallium nitride
Semiconductor

ASJC Scopus subject areas

Chemical Engineering(all)
Safety, Risk, Reliability and Quality
Environmental Engineering
Environmental Chemistry

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Possible mechanism of gallium bioleaching from gallium nitride (GAN) by Arthrobacter creatinolyticus : Role of amino acids/peptides/proteins bindings with gallium. / Maneesuwannarat, Sirikan; Teamkao, Pattrarat; Vangnai, Alisa S.; Yamashita, Mitsuo; Thiravetyan, Paitip.

In: Process Safety and Environmental Protection, Vol. 103, 01.09.2016, p. 36-45.

Research output: Contribution to journal › Article › peer-review

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abstract = "The objectives of this work were to screen and characterize heterotrophic bacteria for gallium nitride (GaN) leaching; and to study the involved mechanism of bacterial leaching of Ga from GaN. Ga in the form of GaN has been extensively used as a semiconductor substrate material. The advantage of bioleaching for gallium recovery is the fact that it is a safer, environmentally-friendly method and includes energy-saving processes, which can leach metals at relatively low concentrations. Three bacterial isolates were isolated from cadmium-, and arsenic-contaminated soil in the presence of GaN. NKS4 showed the highest efficiency in Ga leaching at approximately 18% after 15 days, and the system pH was 9. The analysis of 16S rDNA sequences indicated that strain NKS4 was characterized and identified as Arthrobacter creatinolyticus (A. creatinolyticus). Further investigation revealed that the ability of Ga leaching from GaN by this bacterium involved amino acids. Fourier transform infrared spectroscopy (FTIR) was used to investigate the interaction of Ga and amino acids/peptides/proteins which were secreted from this bacteria.",

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