Microbial Degradation of Biowaste for Hydrogen Production

Asri, Ouahid El; Fadlaoui, Soufiane; Ramdani, Mohamed; Errochdi, Sanae

doi:10.1007/978-981-16-0518-5_17

Cited by 2 publications

(1 citation statement)

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“…These processes utilize a range of biowaste materials, converting them into hydrogen through complex biochemical reactions facilitated by microbial activity. Asri et al reported that dark fermentation achieved hydrogen yields of 2.83 mol H 2 •mol −1 glucose hexose, photofermentation produced up to 1.82 mol H 2 •mol −1 glucose substrate, and two-stage fermentation integrated both processes to enhance overall hydrogen yields to 3.50 mol H 2 •mol −1 glucose [39]. The anaerobic fermentation of food residue biomass has been shown to produce hydrogen at a concentration of up to 48.2% in biogas [40].…”

Section: Hydorgen Production From Household Biowastementioning

confidence: 99%

Hydrogen Production from Enzymatic Pretreated Organic Waste with Thermotoga neapolitana

Tix,

Moll,

Krafft

et al. 2024

Energies

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Biomass from various types of organic waste was tested for possible use in hydrogen production. The composition consisted of lignified samples, green waste, and kitchen scraps such as fruit and vegetable peels and leftover food. For this purpose, the enzymatic pretreatment of organic waste with a combination of five different hydrolytic enzymes (cellulase, amylase, glucoamylase, pectinase and xylase) was investigated to determine its ability to produce hydrogen (H2) with the hydrolyzate produced here. In course, the anaerobic rod-shaped bacterium T. neapolitana was used for H2 production. First, the enzymes were investigated using different substrates in preliminary experiments. Subsequently, hydrolyses were carried out using different types of organic waste. In the hydrolysis carried out here for 48 h, an increase in glucose concentration of 481% was measured for waste loads containing starch, corresponding to a glucose concentration at the end of hydrolysis of 7.5 g·L−1. In the subsequent set fermentation in serum bottles, a H2 yield of 1.26 mmol H2 was obtained in the overhead space when Terrific Broth Medium with glucose and yeast extract (TBGY medium) was used. When hydrolyzed organic waste was used, even a H2 yield of 1.37 mmol could be achieved in the overhead space. In addition, a dedicated reactor system for the anaerobic fermentation of T. neapolitana to produce H2 was developed. The bioreactor developed here can ferment anaerobically with a very low loss of produced gas. Here, after 24 h, a hydrogen concentration of 83% could be measured in the overhead space.

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Section: Hydorgen Production From Household Biowastementioning

confidence: 99%