New insight on Fe-bioavailability: Bio-uptake, utilization and induce in optimizing methane production in anaerobic digestion

Zhang, Tengyu; Zhang, Pengshuai; Hu, Zhaoyan; Qi, Qiuxian; He, Yiliang; Zhang, Jingxin

doi:10.1016/j.cej.2022.136099

Cited by 22 publications

(7 citation statements)

References 46 publications

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“…Furthermore, the utilization of Fe played an important role in the early evolution of respiration . The effect of Fe bioavailability on the population dynamics of anaerobic digesting bacteria supports the idea that cells can enhance enzymatic activity through enhanced Fe bioavailability . The effect of Fe utilization on the enhanced energy conservation value of AD by EB microbial has not been reported in any pathway.…”

Section: Introductionmentioning

confidence: 80%

“…Both functional abundance and species abundance are derived from gene set abundance. The cell activity and membrane potential were measured by the flow cytometry approach (described in previous reports), , details are given in the Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

“…The bioavailability of the metal carbonate (F3) and sulfide (F4) components and the residual component (F5) is not bioavailable (detection as previously reported). 1 The Fe content in the enzyme was determined by ICP-MS (Fachbereich Chemie, Philipps-Universitat, Marburg, Germany). 1 2.2.4.…”

Section: Determination Of Fe Bioavailabilitymentioning

confidence: 99%

“…10 The effect of Fe bioavailability on the population dynamics of anaerobic digesting bacteria supports the idea that cells can enhance enzymatic activity through enhanced Fe bioavailability. 1 The effect of Fe utilization on the enhanced energy conservation value of AD by EB microbial has not been reported in any pathway. EB appears to be the optimal solution to improve energy and resource conversion efficiency; however, EB is only captured in low-energy substrates for the purpose of maintaining the thermodynamic limit of life respiration.…”

Section: Introductionmentioning

confidence: 98%

“…Anaerobic digestion (AD) is a highly anticipated pathway for the conversion of organic matter resources, in which microorganisms progressively break down organic matter into high-value products and clean fuels such as volatile fatty acids (VFAs), hydrogen and methane. 1 Multiple AD substrates pose different challenges to microorganisms, and in some redox reactions that require overcoming high-potential barriers, anaerobic microorganisms have three modes of energy coupling to replenish ATP, namely, ATP hydrolysis, reverse electron transfer, and electronic bifurcation (EB). 2 Among them, EB is a respiratory mode that maximizes energy conservation and drives the bifurcation of electron transfer by directly coupling the excitation energy in flavin/quinone-based enzyme complexes.…”

Section: Introductionmentioning

confidence: 99%

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Electronic Bifurcation: A New Perspective on Fe Bio-Utilization in Anaerobic Digestion of Lactate

Zhang

et al. 2023

Environ. Sci. Technol.

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Anaerobic microorganisms use flavin/quinone-based electronic bifurcation (EB) to gain a survival advantage at the thermodynamic limits. However, the contribution of EB to microscopic energy and productivity in the anaerobic digestion (AD) system is unknown. This study demonstrates for the first time that under limited substrate conditions, Fe-driven EB in AD leads to a 40% increase in specific methane production and contributes to 25% ATP accumulation, by analyzing the concentration of EB enzymes such as Etf−Ldh, HdrA 2 B 2 C 2 , and Fd, NADH and actual Gibbs free-energy changes. Differential pulse voltammetry and electron respiratory chain inhibition experiments detected that iron enhanced electron transport in EB by accelerating the activity of flavin, Fe−S clusters, and quinone groups. Other microbial and enzyme genes with EB potential closely related to iron transport have also been found in metagenomes. The potential of EB to accumulate energy and enhance productivity in AD systems was investigated, and metabolic pathways were proposed in the study.

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Section: Introductionmentioning

confidence: 80%

Section: Methodsmentioning

confidence: 99%

Section: Determination Of Fe Bioavailabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Electronic Bifurcation: A New Perspective on Fe Bio-Utilization in Anaerobic Digestion of Lactate

Zhang

et al. 2023

Environ. Sci. Technol.

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A machine learning assisted prediction of potential biochar and its applications in anaerobic digestion for valuable chemicals and energy recovery from organic waste

Zhang,

Zhang

et al. 2024

Carb Neutrality

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The utilization of biochar derived from biomass residue to enhance anaerobic digestion (AD) for bioenergy recovery offers a sustainable approach to advance sustainable energy and mitigate climate change. However, conducting comprehensive research on the optimal conditions for AD experiments with biochar addition poses a challenge due to diverse experimental objectives. Machine learning (ML) has demonstrated its effectiveness in addressing this issue. Therefore, it is essential to provide an overview of current ML-optimized energy recovery processes for biochar-enhanced AD in order to facilitate a more systematic utilization of ML tools. This review comprehensively examines the material and energy flow of biochar preparation and its impact on AD is comprehension reviewed to optimize biochar-enhanced bioenergy recovery from a production process perspective. Specifically, it summarizes the application of the ML techniques, based on artificial intelligence, for predicting biochar yield and properties of biomass residues, as well as their utilization in AD. Overall, this review offers a comprehensive analysis to address the current challenges in biochar utilization and sustainable energy recovery. In future research, it is crucial to tackle the challenges that hinder the implementation of biochar in pilot-scale reactors. It is recommended to further investigate the correlation between the physicochemical properties of biochar and the bioenergy recovery process. Additionally, enhancing the role of ML throughout the entire biochar-enhanced bioenergy recovery process holds promise for achieving economically and environmentally optimized bioenergy recovery efficiency. Graphical Abstract

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Biological nitrogen removal mechanisms during anaerobic digestion of swine manure: Effects of biogas circulation and activated carbon addition

Hou

Liu

et al. 2023

Bioresource Technology

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New insight on Fe-bioavailability: Bio-uptake, utilization and induce in optimizing methane production in anaerobic digestion

Cited by 22 publications

References 46 publications

Electronic Bifurcation: A New Perspective on Fe Bio-Utilization in Anaerobic Digestion of Lactate

Electronic Bifurcation: A New Perspective on Fe Bio-Utilization in Anaerobic Digestion of Lactate

A machine learning assisted prediction of potential biochar and its applications in anaerobic digestion for valuable chemicals and energy recovery from organic waste

Biological nitrogen removal mechanisms during anaerobic digestion of swine manure: Effects of biogas circulation and activated carbon addition

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