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Open AccessArticle

Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment

R&D Center, Samsung Engineering Co., Ltd., Suwon 16523, Korea
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Int. J. Environ. Res. Public Health 2020, 17(12), 4411; https://doi.org/10.3390/ijerph17124411
Received: 21 May 2020 / Revised: 16 June 2020 / Accepted: 17 June 2020 / Published: 19 June 2020
(This article belongs to the Section Environmental Science and Engineering)
This study describes an immobilization method of enriched microorganism, for robustly degrading organic compounds, including tetramethyl ammonium hydroxide (TMAH) in electronics wastewater without an increase of total organic carbon (TOC) in effluent. The enriched TMAH degrading bacteria was entrapped inside the pellets through polymerization. Polymerization conditions were optimized in terms of long-term TOC leak tests of pellet. Among several methods, a differential scanning calorimetry (DSC) analysis was found to be effective for the hands-on evaluation of stability in pellet. Stable pellets showed less than 10 J/g of curing heat by DSC analysis. This method is suitable for the optimization of polymerization conditions and controlling the quality of pellets. The removal efficiency of TMAH was over 95% and effluent concentration of TOC was below 100 ppb. The viability test results revealed that entrapped microorganisms were actively survived after five months of operations. This immobilization method is strongly suggested as a new strategy for the wastewater reuse process in low-strength electronics wastewater. View Full-Text
Keywords: differential scanning calorimetry (DSC); electronics wastewater; immobilized cells; polymerization; tetramethyl ammonium hydroxide (TMAH) differential scanning calorimetry (DSC); electronics wastewater; immobilized cells; polymerization; tetramethyl ammonium hydroxide (TMAH)
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MDPI and ACS Style

Chung, S.; Choi, J.; Chung, J. Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment. Int. J. Environ. Res. Public Health 2020, 17, 4411. https://doi.org/10.3390/ijerph17124411

AMA Style

Chung S, Choi J, Chung J. Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment. International Journal of Environmental Research and Public Health. 2020; 17(12):4411. https://doi.org/10.3390/ijerph17124411

Chicago/Turabian Style

Chung, Seungjoon; Choi, Jeongyun; Chung, Jinwook. 2020. "Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment" Int. J. Environ. Res. Public Health 17, no. 12: 4411. https://doi.org/10.3390/ijerph17124411

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