Selectively enriched mixed sulfate-reducing bacteria for acrylamide biodegradation

Tahir, Khurram; Miran, Waheed; Jang, Jiseon; Shahzad, Asif; Moztahida, Mokrema; Jeon, Hee Jung; Kim, B.; Lim, Seong‐Rin

doi:10.1007/s13762-020-02819-5

Cited by 1 publication

(3 citation statements)

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“…This is because AM is the only substrate in the systems at the early stage of the reaction, and the ammonification of AM is the key step in the mineralization of AM. First, microorganisms need to convert AM into acrylic or acrylate through ammonification 15 . Then, the acrylic or acrylate is gradually converted to carbon dioxide and methane through syntrophic metabolism between different microorganisms 29 .…”

Section: Resultsmentioning

confidence: 99%

“…First, microorganisms need to convert AM into acrylic or acrylate through ammonification. 15 Then, the acrylic or acrylate is gradually converted to carbon dioxide and methane through syntrophic metabolism between different microorganisms. 29 In addition, conductive particles provide attachment sites for extracellular enzymes and microorganisms, which strengthens the syntrophic metabolism between different microorganisms.…”

Section: Resultsmentioning

confidence: 99%

“…Tahir et al reported the degradation of AM by sulfate-reducing bacteria. 15 The above research studies focused on degradation of AM by a single strain and indicated that the degradation products of AM were acrylate and ammonium. There are few reports on the treatment of AM by anaerobic activated sludge.…”

Section: Introductionmentioning

confidence: 99%

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Iron/carbon conductive materials for enhancing anaerobic treatment of synthetic acrylamide wastewater

Wan

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Most studies have focused on the degradation of acrylamide (AM) by a single strain. There are relatively few studies on the treatment of AM by anaerobic activated sludge. Previous studies have shown that conductive particles can change the mode of electron transport between anaerobic microorganisms. Therefore, this study compared the enhancement effect of three different particles (Fe 3 O 4 , granular activated carbon (GAC), graphite) on the treatment of synthetic AM wastewater by anaerobic activated sludge under different temperature conditions (30, 25, 20 °C) and particle dose (2, 6 g L −1 ). RESULTS:The results showed that 6 g L −1 GAC improved the removal rate of chemical oxygen demand (COD) and AM by 22.95% and 19% compared with the control group at 30 °C, respectively, indicating that the addition of GAC contributes to the degradation of AM and improves COD removal rate. Results of high-performance liquid chromatography (HPLC) showed that the activated sludge with GAC obviously promoted the degradation of AM. Besides, a large amount of propionic acid was detected in all experimental groups during the reaction, and the activated sludge with GAC promoted degradation of propionic acid.CONCLUSION: Anaerobic activated sludge supplemented with sufficient GAC can not only absorb and degrade AM synchronously but also accelerate the conversion of intermediates, such as acrylic and propionic acids. Based on the results of HPLC and liquid chromatography-mass spectrometry, a possible method of degradation of AM by anaerobic activated sludge was proposed.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%