Piringer, Gerhard

Official Name
Piringer, Gerhard
Main Affiliation
Akademische Titel
DI, Ph.D.
Email
gerhard.piringer@hochschule-burgenland.at
ORCID
Scopus Author ID
23095387800
Status
staff

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Now showing 1 - 10 of 42
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    Corn stover for biogas production: Effect of steam explosion pretreatment on the gas yields and on the biodegradation kinetics of the primary structural compounds
    (Elsevier, 2017)
    Lizasoain, Javier 
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    Trulea, Adrian 
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    Gittinger, Johannes 
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    Kral, Iris 
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    This study evaluated the effect of steam explosion on the chemical composition and biomethane potential of corn stover using temperatures ranging between 140 and 220°C and pretreatment times ranging between 2 and 15min. Biodegradation kinetics during the anaerobic digestion of untreated and corn stover, pretreated at two different intensities, 140°C for 5min and 180°C for 5min, were studied in tandem. Results showed that pretreatment at 160°C for 2min improved the methane yield by 22%. Harsher pretreatment conditions led to lower hemicellulose contents and methane yields, as well as higher lignin contents, which may be due to the formation of pseudo-lignin. The biodegradation kinetics trial demonstrated that steam explosion enhances the degradation of structural carbohydrates and acid insoluble lignin.
      1Scopus© Citations 103  85
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    Scopus© Citations 2  3
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    Exergie Trafos zum Heizen und Klimatisieren durch Fernwärme
    (2024-10)
    Schittl, Florian
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    Kührer, Alexander
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    Schauer, Raphael
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    Beckmann, Georg 
      27
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    Carbon Foodprint - Fernkältebereitstellung mittels Kompressionskältemaschinen
    (2023-06-14)
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    Weber, Rosa
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    Schauer, Raphael
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      27
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    Environmental impact evaluation of wear protection materials
    (Elsevier BV, 2025-01)
    Rojacz, Harald
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    Maierhofer, D.
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    Scopus© Citations 15  26
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      28
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    Effects of the Antibiotics Chlortetracycline and Enrofloxacin on the Anaerobic Digestion in Continuous Experiments
    (Springer, 2014)
    Bauer, Alexander 
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    Lizasoain, Javier 
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    Nettmann, Edith 
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    Bergmann, Ingo 
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    Mundt, Kerstin 
    Significant quantities of antibiotics are used in modern livestock husbandry and are found in livestock waste. Such waste has been reported to exert inhibitory effects if used as a substrate in biogas facilities. The goal of this study is to analyze the inhibitory effect of the antibiotics chlortetracycline (CTC) and enrofloxacin (EFX) on biogas production with pig slurry. Antibiotic concentrations up to 8,000 mg kg−1 dry matter (DM) pig slurry were added in continuous fermentation tests. Impacts on methane production and on the microbial community structure were analyzed. The results clearly show that chlortetracycline and enrofloxacin negatively affect biogas production. Higher concentrations of antibiotics led to lower methane production. The addition of 200 mg kg−1 DM of CTC or EFX reduced the specific methane yields up to 49 and 44 %, respectively. The microbial community did not show any changes at this concentration. When chlortetracycline was added at a concentration of 8,000 mg kg−1 DM, the biodiversity changed slightly compared to the control without antibiotics.
      1Scopus© Citations 26  92
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    Linked system assessment to support sustainable energy supplies “LiSA”
    (VILNIUS TECH, 2023-10-23)
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    Schauer, Raphael
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    Sabo, Elena
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    The globally agreed climate targets require an expansion of renewable energies within the entire supply system. To support this a well-developed set of methods is needed to assess technical, environmental, social, and economic impacts. These methods must cover the entire life cycle and should enable an efficient and target-oriented assessment of energy technologies and systems. The Josef-Ressel (JR) centre LiSA (established 1st January 2022) will address this need. It will develop assessment methods focusing on thermal energy conversion systems embedded in a renewables-rich energy landscape.
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    Effects of working depth and wheel slip on fuel consumption of selected tillage implements
    (International Commission of Agricultural Engineering, 2014)
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    Rising fossil fuel prices are leading to an increasing awareness of energy efficiency in plant production. Tillage in particular can consume large amounts of fuel. For four tillage implements (reversible mouldboard plough, short disc harrow, universal-cultivator, subsoiler), this study quantifies the effect of different working depths on fuel consumption, wheel slip, field capacity and specific energy consumption. A four-wheel drive tractor (92 kW) was equipped with a data-acquisition system for engine speed, vehicle speed, wheel speed and fuel consumption. Fuel consumption was measured in the fuel system with an integrated high-precision flow-meter. The results show that the area-specific fuel consumption increased linearly with working depth for both the mouldboard plough and the short disc harrow, but disproportionately for the subsoiler. Wheel slip was found to increase fuel consumption and decrease field capacity performance at all depths. The influence of the engine speed was shown in a separate experiment with a universal-cultivator. Increasing the engine speed from 1,513 r min-1 to 2,042 r min-1 results in an increase of 80% for the fuel consumption rate (L/h) and 35% for the area-specific fuel consumption (L/ha). Future measurement of drawbar pull will allow a more detailed analysis of the energy efficiency losses at the engine, the transmission, and at the wheel/soil interface.
      1  79