نتایج جستجو برای: biogas production

تعداد نتایج: 607277  

2016
Petar Sabev Varbanov Peng-Yen Liew Jun-Yow Yong Jiří Jaromír Klemeš Hon Loong Lam Martin Miltner Aleksander Makaruk Michael Harasek

The upgrading of biogas for the production of biomethane to be injected to the natural gas grid has gained significant importance in recent years. It is often considered to be superior to the production of electricity and district heat with internal combustion engines mainly because of better energy utilisation, higher flexibility and beneficial economic prospects. Biogas upgrading is commonly ...

2012

The purpose of this research is to study the effect of Fe concentration as a trace metal on the quality and quantity of biogas produced from the fermentation of palm oil mill effluent (POME). Raw POME as feed was obtained from one of the palm oil mills belong to PTPN IV, other materials used were hydrochloric acid, sodium bicarbonate, and trace metals. Observed variables were volume of biogas, ...

2015
Yongjun Wei Haokui Zhou Jun Zhang Lei Zhang Alei Geng Fanghua Liu Guoping Zhao Shengyue Wang Zhihua Zhou Xing Yan Lorenzo Brusetti

Diverse cellulolytic bacteria are essential for maintaining high lignocellulose degradation ability in biogas digesters. However, little was known about functional genes and gene clusters of dominant cellulolytic bacteria in biogas digesters. This is the foundation to understand lignocellulose degradation mechanisms of biogas digesters and apply these gene resource for optimizing biofuel produc...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2015
M M Nakazawa W R S Silva Júnior M T Kato S Gavazza L Florencio

In this study, we evaluated the use of an up-flow anaerobic sludge blanket (UASB) reactor to treat crude glycerol obtained from cottonseed biodiesel production. The laboratory-scale UASB reactor (7.0 L) was operated at ambient temperature of 26.5°C with chemical oxygen demand (COD) concentrations between 0.5 and 8.0 g/L. The volatile fatty acid contents, pH, inorganic salt contents and biogas p...

2010
Zsolt Barta Kati Reczey Guido Zacchi

BACKGROUND Replacing the energy-intensive evaporation of stillage by anaerobic digestion is one way of decreasing the energy demand of the lignocellulosic biomass to the ethanol process. The biogas can be upgraded and sold as transportation fuel, injected directly into the gas grid or be incinerated on-site for combined heat and power generation. A techno-economic evaluation of the spruce-to-et...

2011
E. Nordell M. Karlsson

A common way to store digestate from anaerobic digesters is in open air lagoons. The aim of this study was to investigate whether cooling of digestate before transfer to the storage prevents methane production. Furthermore, if methanogenesis is not prevented, to determine the potential maximum methane slip from an open air lagoon, supplied with heat exchanged digestate from a mesophilic co-dige...

Journal: :Water research 2007
Manfred Lübken Marc Wichern Markus Schlattmann Andreas Gronauer Harald Horn

Knowledge of the net energy production of anaerobic fermenters is important for reliable modelling of the efficiency of anaerobic digestion processes. By using the Anaerobic Digestion Model No. 1 (ADM1) the simulation of biogas production and composition is possible. This paper shows the application and modification of ADM1 to simulate energy production of the digestion of cattle manure and ren...

2008
Yanfeng He Yunzhi Pang Yanping Liu Xiujin Li Kuisheng Wang

The biogas yield of rice straw during anaerobic digestion can be substantially increased through solid-state sodium hydroxide (NaOH) pretreatment. This study was conducted to explore the mechanisms of biogas yield enhancement. The chemical compositions of the pretreated rice straw were first analyzed. Fourier transform infrared (FTIR), hydrogen-1 nuclear magnetic resonance spectroscopy (1H NMR)...

2016
Rajan Sharma Shailey Singhal Avanish K Tiwari

Lignocelluloses are often a major or sometimes the sole components of different waste streams from various industries, forestry, agriculture and municipalities. Hydrolysis of these materials is the first step for either digestion to biogas (methane) or fermentation to ethanol. However, enzymatic hydrolysis of lignocelluloses with no pre-treatment is usually not so effective because of high stab...

2017
Martyna Wojcieszak Adam Pyzik Krzysztof Poszytek Pawel S. Krawczyk Adam Sobczak Leszek Lipinski Otton Roubinek Jacek Palige Aleksandra Sklodowska Lukasz Drewniak

A well-balanced microbial consortium is crucial for efficient biogas production. In turn, one of a major factor that influence on the structure of anaerobic digestion (AD) consortium is a source of microorganisms which are used as an inoculum. This study evaluated the influence of inoculum sources (with various origin) on adaptation of a biogas community and the efficiency of the biomethanizati...

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