Goethite promoted anaerobic digestion of algal biomass in continuous stirring-tank reactors

Yue, Zhengbo; Ma, Ding; Wang, Jin; Tan, Juan; Peng, Shuchuan; Chen, Tianhu

doi:10.1016/j.fuel.2015.07.059

Cited by 32 publications

(15 citation statements)

References 25 publications

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“…03‐0249 respectively, which indicated that the added magnetite was partly transformed into goethite during operation. Goethite, as a kind of semi‐conductor, could enhance anaerobic biodegradation and methanogenesis by assisting DIET . Thus, both the added magnetite and the generated goethite in the Fe 3 O 4 /AS system might have positive effects on DIET.…”

Section: Resultsmentioning

confidence: 99%

Submicron magnetite‐enhanced tribromophenol removal and methanogenesis under microaerobic condition

Yang

Wang

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND: To accelerate direct interspecies electron transfer (DIET), magnetite is supplemented in anaerobic activated sludge (AS). However, it is usually reduced by dissimilatory iron reducing bacteria (DIRB). Therefore, an AS system supplemented with submicron magnetite particles (Fe 3 O 4 /AS) in an up-flow microaerobic sludge reactor was established, aiming to remove tribromophenol (TBP) efficiently and alleviate the magnetite dissolution.RESULTS: Under microaerobic condition (DO, 0.6 mg L −1 ), the efficiencies of removal of COD, TBP, and methane production in Fe 3 O 4 /AS system were, respectively, 14.3%, 16.7%, and 27.2% higher than those of the AS system. Correspondingly, the dehydrogenase (DHA) and Coenzyme F 420 (CoF 420 ) activities were separately 1.38-fold and 1.41-fold enhanced. The enhanced biodegradation was via potential DIET, as visualized by microbes and magnetite particles, Geobacter enrichment and c-type cytochromes (c-Cyts) increasement. Notably, magnetite majorly maintained an intact structure. In effluents, the Fe(II) concentrations were maintained at less than 10 mg L −1 under microaerobic conditions, far less than the amount under anaerobic conditions, which might be due to the in situ redox cycle of Fe(III)-reduction and Fe(II)-reoxidation. CONCLUSION: Significant enhancements in removal efficiencies of TBP and COD and methanogenesis were demonstrated in a Fe3 O 4 /AS system, indicating intrinsically faster electron transfer via electrical conduction. Putative oxidation of dissolved Fe(II) in situ occurred in microaerobic environments, which could protect magnetite in the system without extra magnetite supplementation. Industry increase of COD (1000-2000 mg L −1 ) and TBP (5-20 mg L −1 ) at 0.6 mg L −1 DO concentration. Anaerobic, microaerobic and aerobic conditions were introduced to evaluate the effect on TBP and COD removal and methanogenesis by different DO concentrations J Chem Technol Biotechnol 2019; 94: 730-738

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Section: Resultsmentioning

confidence: 99%

Submicron magnetite‐enhanced tribromophenol removal and methanogenesis under microaerobic condition

Yang

Wang

et al. 2018

J of Chemical Tech & Biotech

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“…the previous research, goethite has been reported to enhance the transformation of VFA and didn't influence the degradation efficiency of solid substrate (Ma et al, 2015;Yue et al, 2015). In the current work, both VFAs and glucose degradation process were promoted.…”

Section: Short Communicationmentioning

confidence: 92%

“…The continuous experiments could provide more information compared to the batch tests. The latter mostly reported the effects on the methanogenic step Tan et al, 2015;Yue et al, 2015). The results only confirmed that goethite could facilitate the methane production in the CSTRs and happened at a certain OLR level.…”

Section: Short Communicationmentioning

confidence: 94%

“…Methane, volatile fatty acids (VFAs), and carbohydrate were determined according to the procedure reported by Yue et al (2015). HCl-extractable Fe was determined by the ferrozine method (Fredrickson et al, 1998).…”

Section: Methodsmentioning

confidence: 99%

“…It was suggested that direct interspecies electron transfer (DIET) mediated by the conductive material played an important role. Goethite was one of the natural mineral products which was abundant in the world and had been confirmed to have the ability of promoting the anaerobic digestion of organic solid biomass (Ma, Wang, Shi, Chen, & Yue, 2015;Tan et al, 2015;Yue et al, 2015). Most of the experiments were performed in batch model and have not been explored in the anaerobic treatment of wastewater in the continuous operation reactors.…”

Section: Introductionmentioning

confidence: 99%

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Impact of goethite dosed continuous stirred tank reactor on continuous methane production at different organic loading rates

Wan

Peng

Zhang

et al. 2019

Water Environment Research

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Iron oxides facilitated anaerobic digestion process has been attracted more and more attention in the renewable energy production area. In the current study, goethite was added into the continuous stirred tank reactor with glucose as the substrate. Effect of the influent organic loading rate (OLR) on the reactor performances was explored. Results showed that goethite promoted the methane production significantly (p < 0.05) when OLR was changed between 1.20 and 1.80 g glucose L−1 day−1. Compared to the control reactor, addition of goethite improved the methane production by13.4%–22.9%. The iron reduction rate had a positive correlation with the methane production rate. Microbial community analysis results showed that OLRs influenced the dominant methanogenic species in the both reactors. Methanothrix, Methanobacterium, Methanosarcina, and Methanocella were dominant under various OLR levels. Practitioner points Goethite could promote the methanogenic process of glucose in the CSTRs under certain levels of OLRs. Iron reduction rate had a positive correlation with the methane production rate. OLRs influenced the dominant methanogenic species in the goethite‐dosed reactors.

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Biogas Production from Organic Waste: Recent Progress and Perspectives

Atelge

Krisa

Kumar

et al. 2018

Waste Biomass Valor

191

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Goethite promoted anaerobic digestion of algal biomass in continuous stirring-tank reactors

Cited by 32 publications

References 25 publications

Submicron magnetite‐enhanced tribromophenol removal and methanogenesis under microaerobic condition

Submicron magnetite‐enhanced tribromophenol removal and methanogenesis under microaerobic condition

Impact of goethite dosed continuous stirred tank reactor on continuous methane production at different organic loading rates

Biogas Production from Organic Waste: Recent Progress and Perspectives

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