Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment
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 entrapp...
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2020-06-01
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doaj-cb72d4f2be674685a3b6e17c84dc7f462020-11-25T03:04:45ZengMDPI AGInternational Journal of Environmental Research and Public Health1661-78271660-46012020-06-01174411441110.3390/ijerph17124411Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater TreatmentSeungjoon Chung0Jeongyun Choi1Jinwook Chung2R&D Center, Samsung Engineering Co., Ltd., Suwon 16523, KoreaR&D Center, Samsung Engineering Co., Ltd., Suwon 16523, KoreaR&D Center, Samsung Engineering Co., Ltd., Suwon 16523, KoreaThis 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.https://www.mdpi.com/1660-4601/17/12/4411differential scanning calorimetry (DSC)electronics wastewaterimmobilized cellspolymerizationtetramethyl ammonium hydroxide (TMAH) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Seungjoon Chung Jeongyun Choi Jinwook Chung |
spellingShingle |
Seungjoon Chung Jeongyun Choi Jinwook Chung 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 differential scanning calorimetry (DSC) electronics wastewater immobilized cells polymerization tetramethyl ammonium hydroxide (TMAH) |
author_facet |
Seungjoon Chung Jeongyun Choi Jinwook Chung |
author_sort |
Seungjoon Chung |
title |
Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment |
title_short |
Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment |
title_full |
Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment |
title_fullStr |
Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment |
title_full_unstemmed |
Development of Novel Method for Immobilizing TMAH-Degrading Microbe into Pellet and Characterization Tool, for Verifying Its Robustness in Electronics Wastewater Treatment |
title_sort |
development of novel method for immobilizing tmah-degrading microbe into pellet and characterization tool, for verifying its robustness in electronics wastewater treatment |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1661-7827 1660-4601 |
publishDate |
2020-06-01 |
description |
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. |
topic |
differential scanning calorimetry (DSC) electronics wastewater immobilized cells polymerization tetramethyl ammonium hydroxide (TMAH) |
url |
https://www.mdpi.com/1660-4601/17/12/4411 |
work_keys_str_mv |
AT seungjoonchung developmentofnovelmethodforimmobilizingtmahdegradingmicrobeintopelletandcharacterizationtoolforverifyingitsrobustnessinelectronicswastewatertreatment AT jeongyunchoi developmentofnovelmethodforimmobilizingtmahdegradingmicrobeintopelletandcharacterizationtoolforverifyingitsrobustnessinelectronicswastewatertreatment AT jinwookchung developmentofnovelmethodforimmobilizingtmahdegradingmicrobeintopelletandcharacterizationtoolforverifyingitsrobustnessinelectronicswastewatertreatment |
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