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In this paper we studied the start-up of an underground digester with a useful volume of 4 m3 in Saharan medium. 320 kg of waste taken from Adrar city slaughterhouses were treated during 60 days. During this study, we followed several parameters evolution such as: pH, volatile fatty acid (VFA), the temperature inside the digester, chemical oxygen demand (COD), pressure and the volume of biogas produced...
This study was carried out to investigate the effects of granularities on anaerobic fermentation of corn stalk, three kinds of corn stalk granularities (9-18cm, 2-4cm and 0.6-2mm) were selected in this experiment. The main components of corn stalk fore-and-aft the anaerobic fermentation were measured, also the content of CH4 of biogas were detected. It was found that both the corn stalk's conversion...
Biogas is a renewable primary energy source. The aim of the current study was to quantify the effect of temperature and feedstock size on biogas production of water hyacinth used for phytoremediation of rural domestic wastewater using anaerobic digestion (AD) process on a batch scale. This experiment consisted of two factors: AD temperature (mesophilic, 35°C) and thermophilic (55°C) and feedstock...
Biogas production by stalk is a most effective way in solving energy problems. The addition of metal ions has great influence on anaerobic methane fermentation. In this paper, Plackett-Burman experimental design was used to screen metal ions playing a key role in biogas fermentation by cotton stalk from 9 metal ions usually involving in anaerobic fermentation. Ni2+ and Fe2+ showed obviously effects...
Urban sustainability is a subject of recent focus in North America, and Canada specifically. As our urban areas continue to grow and consume large quantities of energy and produce massive amounts of waste, we are faced with the challenge of how to manage this situation in a way which is both responsible and sustainable. One feasible urban waste-to-energy technology is anaerobic digestion. Anaerobic...
Climate change as well as the growing import dependency - especially of the European Union - afford stringent measures. The new energy strategy of the EU sets challenging goals particularly regarding the future share of renewable energies. Especially the electricity production from renewable energies is of special interest because questions concerning storage and system integration are more difficult...
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