Improvement of biohydrogen production using a reduced pressure fermentation

Kisielewska, Marta; Dębowski, Marcin; Zieliński, Marcin

doi:10.1007/s00449-015-1434-3

Cited by 39 publications

(14 citation statements)

References 31 publications

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“…These results are taken as a reference for blends results. The first part of the study was regarded to the combustion of mixtures of diesel fuel with methanol, with the volume fraction 10,15,20,25,30,35, and 40%. In the second part of the study, researches are performed on engine powered by mixtures of biodiesel with methanol, with the volume fraction 10, 15, 20, 25, 30, 40, and 50%.…”

Section: Methodsmentioning

confidence: 99%

Experimental investigations on combustion, performance, and emission characteristics of stationary CI engine fueled with diesel–methanol and biodiesel–methanol blends

Jamrozik

Tutak

Pyrc

et al. 2017

Env Prog and Sustain Energy

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This article presents the experimental studies of the one‐cylinder, stationary diesel engine powered by blends of diesel and biodiesel with methanol. In the case of diesel–methanol mixture (DM) investigated, there is up to 40% of the alcohol content in the mixture, while in the case of biodiesel–methanol mixture (BM), the share of the alcohol was up to 50%. The normal combustion process achieved up to 30% of alcohol fraction. Further increase in the alcohol content led to a significant drop in cylinder pressure and the abnormal combustion process. The analysis of the test results showed that in both cases the alcohol content in the mixture should not exceed 30%. In case of DM blend, the increase in ITE by 13% and for BM by 11% compared to powering by diesel or biodiesel fuel. IMEP is kept on near the same level equal to 6.6 bar for DM and 5.8 bar for BM. For these mixtures, it was not exceeded the limited value of COVIMEP equal to 10. The increase in the methanol content up to 30% does not significantly affect changes in emissions of hydrocarbons (THC) and carbon dioxide (CO2), and reduces emission of carbon monoxide (CO). The increase in methanol fraction in blend up to 30% causes large decrease in CO emission (of about 60%) and it does not cause significant changes in hydrocarbon emissions THC and CO2. This methanol fraction causes the increase in NOx emission. The emission of NOx was increased by 68% for DM and by 35% for BM. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1151–1163, 2017

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Section: Methodsmentioning

confidence: 99%

Experimental investigations on combustion, performance, and emission characteristics of stationary CI engine fueled with diesel–methanol and biodiesel–methanol blends

Jamrozik

Tutak

Pyrc

et al. 2017

Env Prog and Sustain Energy

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“…In the literature it can be found studied on alternative combustion systems such as stratified combustion system which provides the possibility of burning ultra-poor mixture [6][7][8][9]. In recent years great attention is paid to the use of alternative fuels [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of diesel-biodiesel-ethanol blend on combustion, performance, and emissions characteristics on a direct injection diesel engine

et al. 2017

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The paper presents results of co-combustion of diesel-biodiesel-ethanol fuel blend in direct injection Diesel engine. Test was performed at constant rotational speed at three commonly used loads of this engine: 100%, 85%, and 70% of load. During the test hydrated ethanol was used at a concentration of 89% of alcohol. In this study, the ethanol fuel was added to diesel-biodiesel fuel blend with concentrations up to 50% with the increment of 5%. The biodiesel was used as an additive to prevent the stratification of ethanol and diesel blends. Thermodynamic parameters of engine were analyzed, and combustion process and exhaust emission were characterized. It turned out that with the increase in engine load is possible to utilize larger ethanol fraction in blend. With the increase of ethanol fuel in blend the increase in ignition delay (38.5% for full load) was observed, but burning duration decreased (49% for full load). The ethanol fuel share in blend generally causes the increase in NO x emission (42% for full load) due to higher oxygen content and higher in-cylinder temperatures. It turned out that, at full load the unrepeatability of indicated mean effective pressure was near the same up to 50% of ethanol fuel in blend (about 2%). In case of partial load at higher ethanol fuel fraction the increase in indicated mean effective pressure un-repeatability was observed.

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“…The procedure of detection of VFAs by gas chromatography (Bruker, 450‐GC) with a flame ionization detector (FID) is presented elsewhere . The volatile organic acids (FOS)/total anorganic carbon (TAC) ratio was determined with TitraLab AT1000 Series Titrator (Hach), which indicated the value between the FOS and the TAC contents of the sample.…”

Section: Methodsmentioning

confidence: 99%

Individual and Synergistic Effects of Metronidazole, Amoxicillin, and Ciprofloxacin on Methane Fermentation with Sewage Sludge

Rusanowska

Harnisz

Zieliński

et al. 2020

CLEAN Soil Air Water

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Methane fermentation is widely used to dispose of sewage sludge at wastewater treatment plants (WWTPs), due to production of renewable energy in the form of biogas. Antibiotics present in wastewater may accumulate in a sewage sludge. The aim of the present study is to investigate the impact of three antibiotics from different classes in three different doses on methane production from sewage sludge. For this purpose, metronidazole (MET), amoxicillin (AMO), and ciprofloxacin (CIP) are individually added to anaerobic reactors with sewage sludge collected from municipal WWTP. The antibiotics' highest concentration (1024 mg kg −1 of AMO; 512 mg kg −1 of MET and CIP) lowers methane production and methane content in biogas. MET exerts the most marked effect and lowers methane production to 36.8 ± 3.7 mL CH 4 kg −1 volatile solids. Tested antibiotics probably inhibit methanogenic archaea, which results in volatile fatty acids (VFAs) accumulation. Addition of MET results in accumulation of many kinds of VFAs with the highest concentration of acetic acid (17.52 ± 1.85 g L −1 ). The addition of of AMO results in accumulation of butyric acid only (253.00 ± 15.89 g L −1 ). However, addition of CIP results in accumulation of mainly acetic acid (7.58 ± 0.82 g L −1 ) and isovaleric acid (2.01 ± 0.41 g L −1 ). Next, synergistic effect of these antibiotics in a low concentration of 16 mg kg −1 of AMO, 8 mg kg −1 of MET, and 2 mg kg −1

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Improvement of biohydrogen production using a reduced pressure fermentation

Cited by 39 publications

References 31 publications

Experimental investigations on combustion, performance, and emission characteristics of stationary CI engine fueled with diesel–methanol and biodiesel–methanol blends

Experimental investigations on combustion, performance, and emission characteristics of stationary CI engine fueled with diesel–methanol and biodiesel–methanol blends

Effect of diesel-biodiesel-ethanol blend on combustion, performance, and emissions characteristics on a direct injection diesel engine

Individual and Synergistic Effects of Metronidazole, Amoxicillin, and Ciprofloxacin on Methane Fermentation with Sewage Sludge

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