Increasing 2 -Bio- (H2 and CH4) production from food waste by combining two-stage anaerobic digestion and electrodialysis for continuous volatile fatty acids removal

Hassan, Gamal K.; Jones, Rhys Jon; Massanet‐Nicolau, Jaime; Dinsdale, Richard M.; Abo-Aly, M.M.; El‐Gohary, Fatma A.; Guwy, Alan J.

doi:10.1016/j.wasman.2021.05.006

Cited by 24 publications

(9 citation statements)

References 29 publications

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“…The low hydrogen production was attributed to acidification caused by substrate overloading 28 . The highest cumulative hydrogen production obtained in this study was 102.79 mL g −1 VS, within the range of 17.30–217.97 mL g −1 VS recorded in recent studies 29‐32 …”

Section: Resultssupporting

confidence: 71%

Optimization of food‐to‐microorganism ratio and addition of Tween 80 to enhance biohythane production via two‐stage anaerobic digestion of food waste

Chen

Song

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDFood waste (FW) is easily acidified to produce acid inhibition, which limits the treatment efficiency of anaerobic digestion (AD). To improve the AD efficiency of FW, two‐stage anaerobic digestion (TSAD) technique was used to test the effect of food‐to‐microorganism (F/M) ratio on hydrogen production and the effect of Tween 80 addition on methane production. Changes in volatile fatty acids during FW TSAD were analyzed. Furthermore, the energy recovery of different TSAD conditions was compared.RESULTSUnder the condition of F/M = 10, hydrogen production of FW was the highest (102.79 mL g−1 volatile solids (VS)). In the methanogenesis stage of FW, the methane production of different conditions was 351.97–407.11 mL g−1 VS. Kinetic analysis showed that the hydrogen production could be increased by appropriately increasing the F/M ratios, and the time required to reach 90% methane production (t90) in the methanogenesis stage could be shortened by adding Tween 80. Analysis of energy recovery showed that the energy yield of TSAD was 13.01–15.68 kJ g−1 VS, and the average daily energy recovery of hydrogen production stage F/M = 10, methane production stage with 0.1% Tween 80 (A‐10 and M‐10 T) were the highest at t90, which was 9.23 and 4.60 kJ d−1.CONCLUSIONF/M ratio affects hydrogen production, and a suitable F/M ratio can improve the hydrogen production of the TSAD of FW. The addition of Tween 80 can shorten the t90 of the methanogenesis stage. Analysis of energy recovery calculation showed that A‐10 + M‐10 T was more economically rational for TSAD. © 2023 Society of Chemical Industry.

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Section: Resultssupporting

confidence: 71%

Optimization of food‐to‐microorganism ratio and addition of Tween 80 to enhance biohythane production via two‐stage anaerobic digestion of food waste

Chen

Song

et al. 2023

J of Chemical Tech & Biotech

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“…Hassan et al. [14] increased biohydrogen yields to 33.68 mL mg −1 using conventional electrodialysis while higher external voltage was used rather than our work. Furthermore, in our system, 50 mL cathodic hydrogen ( Fig.…”

Section: Methods Validationmentioning

confidence: 85%

Increased biological and cathodic hydrogen production using a novel integrated thermophilic fermenter and dual anion exchange membrane bioelectrochemical system

et al. 2022

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“…Jones et al [184] utilised proton exchange membranes to remove hydrogen and electrodialysis to remove VFAs from a sucrose reactor to effectively enhance hydrogen yields by a factor of 3.75. In Hassan et al's work [185], the in situ recovery of VFAs from a food waste reactor almost doubled hydrogen yields and increased VFA concentration from 1.9 to 4.7 g/L. Further studies operating electrodialysis on reactors fed with grass waste [87] and food waste [145] were also effective in enhancing VFAs yield.…”

Section: Undesired By-products and Inhibitorsmentioning

confidence: 93%

Intensification of Acidogenic Fermentation for the Production of Biohydrogen and Volatile Fatty Acids—A Perspective

et al. 2022

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Utilising ‘wastes’ as ‘resources’ is key to a circular economy. While there are multiple routes to waste valorisation, anaerobic digestion (AD)—a biochemical means to breakdown organic wastes in the absence of oxygen—is favoured due to its capacity to handle a variety of feedstocks. Traditional AD focuses on the production of biogas and fertiliser as products; however, such low-value products combined with longer residence times and slow kinetics have paved the way to explore alternative product platforms. The intermediate steps in conventional AD—acidogenesis and acetogenesis—have the capability to produce biohydrogen and volatile fatty acids (VFA) which are gaining increased attention due to the higher energy density (than biogas) and higher market value, respectively. This review hence focusses specifically on the production of biohydrogen and VFAs from organic wastes. With the revived interest in these products, a critical analysis of recent literature is needed to establish the current status. Therefore, intensification strategies in this area involving three main streams: substrate pre-treatment, digestion parameters and product recovery are discussed in detail based on literature reported in the last decade. The techno-economic aspects and future pointers are clearly highlighted to drive research forward in relevant areas.

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Increasing 2 -Bio- (H2 and CH4) production from food waste by combining two-stage anaerobic digestion and electrodialysis for continuous volatile fatty acids removal

Cited by 24 publications

References 29 publications

Optimization of food‐to‐microorganism ratio and addition of Tween 80 to enhance biohythane production via two‐stage anaerobic digestion of food waste

Optimization of food‐to‐microorganism ratio and addition of Tween 80 to enhance biohythane production via two‐stage anaerobic digestion of food waste

Increased biological and cathodic hydrogen production using a novel integrated thermophilic fermenter and dual anion exchange membrane bioelectrochemical system

Intensification of Acidogenic Fermentation for the Production of Biohydrogen and Volatile Fatty Acids—A Perspective

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