Improved anaerobic degradation of purified terephthalic acid wastewater by adding nanoparticles or co-substrates to facilitate the electron transfer process

Li, Heng; Zhang, Weidong; Xia, Dong; Ye, Lingfen; Ma, Wende; Li, Haiyan; Li, Qingbiao; Wang, Qianqian

doi:10.1039/d1en01037a

Cited by 3 publications

(5 citation statements)

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“…Thus, the utilization of g‐C 3 N 4 for anaerobic methanogenesis is a safer choice than using TiO 2 . Moreover, our previous research has demonstrated the effective promotion of TA degradation by adding a small quantity of nano‐TiO 2 particles (5 g/L) at the start of operation in laboratory‐scale up‐flow anaerobic sludge blanket (UASB) reactors 9 . This finding suggests that the observed rate enhancement in batch treatment systems can be achieved in continuous flow reactions as well.…”

Section: Resultsmentioning

confidence: 85%

“…Moreover, our previous research has demonstrated the effective promotion of TA degradation by adding a small quantity of nano-TiO 2 particles (5 g/L) at the start of operation in laboratory-scale up-flow anaerobic sludge blanket (UASB) reactors. 9 This finding suggests that the observed rate enhancement in batch treatment systems can be achieved in continuous flow reactions as well. Considering the superior performance of g-C 3 N 4 compared to TiO 2 , it is expected that using g-C 3 N 4 as the exogenous material in UASB reactor systems may lead to even higher TA degradation performance.…”

Section: Impact Of Different Semiconductor Materials On Ta Degradationmentioning

confidence: 89%

“…The factual effects of the introduction of g‐C 3 N 4 into an anaerobic system have not been investigated, and how the g‐C 3 N 4 will impact the anaerobic methanogenesis deserves to be carefully explored. The common problems of using metal‐based exogenous materials are their tendency to release metal ions and cause high concentrations of metal ions in the wastewater 9 . Comparatively, g‐C 3 N 4 displays excellent structural stability and contains only non‐metal C and N elements, making it an environmentally‐friendly exogenous material for anaerobic wastewater degradation.…”

Section: Introductionmentioning

confidence: 99%

“…Our previous study revealed that nano TiO 2 particles exhibited a comparable effect to nano Fe 3 O 4 particles in a continuous flow reactor for the anaerobic treatment of TA wastewater. 9 Consequently, semiconducting materials may hold great potential in promoting anaerobicrelated processes, potentially outperforming the frequently reported TiO 2 particles.…”

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confidence: 99%

“…The common problems of using metal-based exogenous materials are their tendency to release metal ions and cause high concentrations of metal ions in the wastewater. 9 Comparatively, g-C 3 N 4 displays excellent structural stability and contains only non-metal C and N elements, making it an environmentally-friendly exogenous material for anaerobic wastewater degradation. Additionally, there is a lack of research on elucidating the correlation between the properties of different semiconductors and the functionalities that promote the anaerobic methanogenesis process.…”

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confidence: 99%

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Effect of semiconductor materials on anaerobic methanogenesis of terephthalic acid: Promotion and inhibition mechanisms

Xia,

Ye,

Huang

et al. 2023

AIChE Journal

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The treatment of purified terephthalic acid wastewaters via anaerobic methods poses a significant challenge due to the slow degradation rate and extended reaction time required for the most recalcitrant terephthalic acid (TA). To address this challenge, this study investigated the efficacy of various semiconductors in promoting TA degradation and determined their respective functional roles. Results showed that the addition of g‐C3N4 increased methane production by 28.38%, indicating its potential as a replacement for TiO2 in TA degradation. The improvement was attributed to the intensified direct interspecies electron transfer (DIET) process, facilitated by microorganisms that directly utilize conductive TiO2/g‐C3N4 as intermediaries to accelerate the electron transfer rate. The unfavorable methanogenesis performances of CeO2 and Fe2O3 were accredited to agglomeration phenomena and toxic effects. This study provides insights into the roles of exogenous materials in promoting or limiting the DIET process, and offers an environmentally friendly and highly‐effective strategy for treating industrial purified‐terephthalic acid wastewater.

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Section: Resultsmentioning

confidence: 85%

Section: Impact Of Different Semiconductor Materials On Ta Degradationmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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