Techno-economic analysis of dark fermentative hydrogen production from molasses in a continuous mixed immobilized sludge reactor

Han, Wei; Liu, Zhixiang; Fang, Jun; Huang, Jingang; Zhao, Hongting; Li, Yongfeng

doi:10.1016/j.jclepro.2016.04.055

Cited by 74 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hydrogen production cost is estimated at 32.68 EUR/kg. Interestingly, this value is close to the estimated cost of hydrogen produced by a single-step process employing dark fermentation as mentioned in [16]. Figure 7a illustrates the structure of hydrogen production costs.…”

Section: Process Performance and Plant Characteristicssupporting

confidence: 78%

See 1 more Smart Citation

Evaluation of the Two-Stage Fermentative Hydrogen Production from Sugar Beet Molasses

et al. 2019

View full text Add to dashboard Cite

Fermentative hydrogen production from molasses—a renewable by-product of beet-sugar processing—was considered. Technical and economic evaluations were performed of a stand-alone production plant employing a two-step fermentation process (dark thermophilic fermentation and photofermentation) followed by an adsorption-based upgrading of the produced hydrogen gas. Using a state-of-the-art knowledge base and a mathematical model composed of mass and energy balances, as well as economic relationships, the process was simulated and equipment data were estimated, the hydrogen cost was calculated and a sensibility analysis was carried out. Due to high capital, operating and labor costs, hydrogen production cost was estimated at a rather high level of 32.68 EUR/kg, while the energy output in produced hydrogen was determined as 68% more than the combined input of the thermal and electric energy needed for plant operation. As the room for improvement of plant performance is limited, a perspective on the cost competitiveness of large-scale hydrogen production from fossil sources is unclear.

show abstract

Section: Process Performance and Plant Characteristicssupporting

confidence: 78%

“…Research on fermentative hydrogen production from molasses was later continued dealing separately with dark fermentation [13,14] and photofermentation [15]. Economic analysis of hydrogen production from molasses by mesophilic dark fermentation was performed assuming a rather small energy output of 0.008-0.04 MW [16].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Two-Stage Fermentative Hydrogen Production from Sugar Beet Molasses

et al. 2019

View full text Add to dashboard Cite

show abstract

“…They do not use a life cycle approach, but analyze certain hand-picked qualitative and quantitative indicators; such an approach is more open to subjectivity compared to more standardized approaches, like Life Cycle Assessment (LCA). Additionally, life cycle cost assessments mainly concentrate on one field of technology, e.g., electrochemical [8], solar [9] or fermentative hydrogen production [10]. Regarding LCA, a variety of studies about hydrogen supply are available.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Supply Chains for Mobility—Environmental and Economic Assessment

Wulf

Kaltschmitt

2018

Sustainability

View full text Add to dashboard Cite

Hydrogen mobility is one option for reducing local emissions, avoiding greenhouse gas (GHG) emissions, and moving away from a mainly oil-based transport system towards a diversification of energy sources. As hydrogen production can be based on a broad variety of technologies already existing or under development, a comprehensive assessment of the different supply chains is necessary regarding not only costs but also diverse environmental impacts. Therefore, in this paper, a broad variety of hydrogen production technologies using different energy sources, renewable and fossil, are exemplarily assessed with the help of a Life Cycle Assessment and a cost assessment for Germany. As environmental impacts, along with the impact category Climate change, five more advanced impact categories are assessed. The results show that from an environmental point of view, PEM and alkaline electrolysis are characterized by the lowest results in five out of six impact categories. Supply chains using fossil fuels, in contrast, have the lowest supply costs; this is true, e.g., for steam methane reforming. Solar powered hydrogen production shows low impacts during hydrogen production but high impacts for transport and distribution to Germany. There is no single supply chain that is the most promising for every aspect assessed here. Either costs have to be lowered further or supply chains with selected environmental impacts have to be modified.

show abstract

“…Enriched ammonia-tolerant methanogenic cultures have been used before as bioaugmentation inocula in batch reactors with high ammonia levels (Wilson et al, 2013). However, these enriched cultures were never assessed as bioaugmentation inocula in continuous anaerobic reactors where the washout of the inoculated microorganisms poses a big challenge (Han et al, 2016;Sivagurunathan et al, 2015;Westerholm et al, 2016).…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Effects of added enzymes on sorted, unsorted and sorted-out barley: A model study on realtime viscosity and process potentials using rapid visco analyser

Shetty

Zhuang

Olsen

et al. 2017

Journal of Cereal Science

View full text Add to dashboard Cite

Many ammonia-rich biomass sources, such as manures and protein-rich substrates, are potential inhibitors of the anaerobic digestion (AD) process. It was previously demonstrated that bioaugmentation of Methanoculleus bourgensis MS2T in an ammonia inhibited process in a continuous stirred tank reactor (CSTR), resulted in up to 90 % recovery of the methane production compared to the uninhibited production. However, cultivation of pure strains has practical difficulties due to the need of special growth media and sterile conditions. In contrast, acclimatized enriched cultures have minor sterility requirements. In the current study, an enriched ammonia-tolerant methanogenic culture was bioaugmented in a CSTR reactor operating under ammonia-induced, inhibited-steady-state. The results demonstrated that bioaugmentation, completely counteracted the ammonia toxicity effect. This indicates that a commercial application of bioaugmentation could improve up to 36 % the methane production, the greenhouse gas reduction efficiency and the gross revenue of ammonia inhibited full scale biogas reactors. 16S rRNA gene sequencing showed that bioaugmentation changed the microbial composition of the reactors resulting in higher bacterial and lower archaeal community diversity. The bioaugmented reactor showed a fourfold increase of the abundance of the bioaugmented methanogens compared to the control reactor. This indicates that ammonia-tolerant methanogens established well in the ammonia-inhibited reactor and dominated over the domestic methanogenic population. Finally, this study showed that the enriched culture alleviated ammonia toxicity 25 % more efficiently than the previously used pure culture.

show abstract

Techno-economic analysis of dark fermentative hydrogen production from molasses in a continuous mixed immobilized sludge reactor

Cited by 74 publications

References 28 publications

Evaluation of the Two-Stage Fermentative Hydrogen Production from Sugar Beet Molasses

Evaluation of the Two-Stage Fermentative Hydrogen Production from Sugar Beet Molasses

Hydrogen Supply Chains for Mobility—Environmental and Economic Assessment

Effects of added enzymes on sorted, unsorted and sorted-out barley: A model study on realtime viscosity and process potentials using rapid visco analyser

Contact Info

Product

Resources

About