Macro approach analysis of dark biohydrogen production in the presence of zero valent powered Fe°

Camacho, Carlos Enrique Gomez; Romano, Francesco Ivan; Ruggeri, Bernardo

doi:10.1016/j.energy.2018.06.171

Cited by 22 publications

(5 citation statements)

References 46 publications

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“…Different pH conditions have been applied to S1 and S2 to maintain different microbiomes in each reactor. In S1, the set point is pH S1 = 5.5, which was set to prevent solventogenesis at pH < 5 [16], while the set point in S2 is pH S2 = 7, chosen to prevent the lowering of methanogen activity at pH< 6.5 [10]. The pH values are controlled by means of 405-DPAS-SC-K8S/225 and 9816 Viscolyt sensors made (Mettler Toledo) for S1 and S2, respectively, and by means of two control loop devices, which act on peristaltic pumps using 2 N NaOH solutions.…”

Section: Experimental Set-up Of the Tsad Systemmentioning

confidence: 99%

Continuous two-step anaerobic digestion (TSAD) of organic market waste: rationalising process parameters

Camacho

Ruggeri

Mangialardi

et al. 2019

Int J Energy Environ Eng

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Experimental tests on continuous two-stage anaerobic digestion (TSAD) were conducted, to assess its energetic performance, using organic market waste as a substrate. The systems were tested to ascertain the effects of external stressors, which allow the separation into two different microorganism consortia, that is, hydrogen-producing bacteria and hydrogen-consuming bacteria, to be maintained. Two bioreactors were run in series under different operational conditions, including pH, mixing rate, and initial inoculum, and three different decreasing hydraulic retention times were considered, with a fixed ratio of 1:10 in volume between the first bioreactor (hydrogen) and the second one (methane). The performance of the whole system was assessed over > 140 days to monitor the stability of the process, in terms of the reduction of the volatile solids and the energy productivity for each step. Each tested condition was scored using two parameters: efficiency and efficacy. The first corresponds to the fraction of recovered energy of the available (η) and the second (ξ) was used to compare the energy produced by the TSAD with that of one-step anaerobic digestion. The efficiency resulted to be (24-32)%, while the efficacy proved to be around 1.20. The share of energy, under the form of hydrogen, compared to the total energy recovery, was in the (8-12) % range. Finally, the oscillation behaviour of the quasi-steady-state condition was analysed in terms of the Fano factor to establish the most stable conditions.

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Section: Experimental Set-up Of the Tsad Systemmentioning

confidence: 99%

Continuous two-step anaerobic digestion (TSAD) of organic market waste: rationalising process parameters

Camacho

Ruggeri

Mangialardi

et al. 2019

Int J Energy Environ Eng

Self Cite

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“…In the automotive industry, adding 10-25% of H2 into CH4 will effectively enhance the performance of CH4fueled engines for automobiles [27]. Due to these advantages, hythane has been commercialized in the automobile sector for hythane-fuelled vehicles in the US, India and China [28] and has also received high attention from individual companies such as Volvo, Fiat, and Ashok Leyland [16]. Although the current usage of hythane in automobile sector helps to reduce GHG emission released in the atmosphere, as being said earlier the commercialized hythane used today are produced thermo-chemically based on fossil fuel (natural gas as a starting material) therefore making it unsustainable and the process is energy intensive.…”

Section: Introductionmentioning

confidence: 99%

Operational Conditions affecting Biohythane Production and its Kinetic Model: A Review

Mohd Kopli,

Hassim

2023

JEST

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Recently, the global carbon footprint issue is rising significantly due to fossil fuel demand. Biohythane, which is produced from anaerobic digestion is found as an alternative fuel to address this problem. Even though quite a number of reviews have been done before on biohythane production process, an in-depth review particularly on biohythane kinetic study is not available until now. Therefore, this review paper discusses the general anaerobic digestion process of biohythane production as well as its operating factors such as temperature, pH, and microbial population in improving the productivity. In addition, this paper also discusses kinetics modeling, which is commonly used in biohythane production to improve or analyse the effect, relationship, and function of the parameter, as well as to investigate the performance of biohythane during the process. These kinetic models provide a variety of functional goals depending on the experiment's objective, such as determining the kinetics of cell growth, describing the effect of different operating parameters on biohythane production, studying substrate utilisation and inhibition, and product formation. All models are classified in a table by their equation for further reference.

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“…[12][13][14] The corrosive nature of SRB is mainly due to the production of H 2 S gas, which is considered as a highly corrosive gas. 2,10,[15][16][17] It reacts with metal surfaces and is responsible for creating pits, holes and microscopic cracks by generating corrosive products such as FeS. 10 Although much work has been performed by several researchers in the past decades using various methodologies, it is a subject of great interest to understand the electrochemical complexity behind the bio-corrosion phenomenon, which arises due to the multiple and simultaneous reactions between the pipeline material and the surrounding environment (microorganisms).…”

Section: Introductionmentioning

confidence: 99%

Potential of dynamic bacterial communities in the bio-corrosion process: a proof study with surface morphology of metal coupons

2019

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Macro approach analysis of dark biohydrogen production in the presence of zero valent powered Fe°

Cited by 22 publications

References 46 publications

Continuous two-step anaerobic digestion (TSAD) of organic market waste: rationalising process parameters

Continuous two-step anaerobic digestion (TSAD) of organic market waste: rationalising process parameters

Operational Conditions affecting Biohythane Production and its Kinetic Model: A Review

Potential of dynamic bacterial communities in the bio-corrosion process: a proof study with surface morphology of metal coupons

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