Results 111 to 120 of about 204,846 (290)

Pyrolysis Products as Soil Fertilizers: Screening of Potentially Hazardous Aromatic Compounds

open access: yesNova Biotechnologica et Chimica, 2016
This study investigated the concentrations of polycyclic aromatic hydrocarbons (PAHs) in pyrogenic carbonaceous materials (PCM) produced from three waste materials during slow pyrolysis at 400 and 500°C.
Frišták Vladimír   +4 more
doaj   +1 more source

Nutrient balance of a two-phase solid manure biogas plant [PDF]

open access: yes, 2005
So called "dry fermentation" prototype plants for anaerobic digestion of organic material containing 15-50 % total solids show added advantages compared to slurry digestion plants (Hoffman 2001): Less reactor volume, less process energy, less transport ...
Evers, Lars   +5 more
core  

Decision Support for the Construction of Farm-Scale Biogas Digesters in Developing Countries with Cold Seasons

open access: yesEnergies, 2013
Biogas production is a clean renewable energy source that can improve lives in developing countries. However, winter temperatures in some areas are too low to enable enough biogas production in small unheated digesters to meet the energy requirements of ...
Sven Gjedde Sommer, Charlotte Rennuit
doaj   +1 more source

Environmental Dynamics in Animal Waste Reclamation in the Scaling up of Livestock in Thailand [PDF]

open access: yes, 2012
Thailand has seen a scaling up of pig production in numbers and structure. Nonetheless, in-house separation and agricultural reclamation of pig solid waste are common practice.
GONZALEZ-SORIA, JAVIER
core  

Optimal Application of Biogas Slurry in Paddy Fields under the Dual Constraints of Agronomy and Environment in the Yangtze River Delta Region

open access: yesAgronomy
The production of huge amounts of biogas slurry during livestock breeding has resulted in pressing environmental issues. Although paddy fields can be potential sinks for the disposal of biogas slurry, the impacts of biogas slurry on rice production ...
Linlin Shi   +7 more
doaj   +1 more source

Effects of Three Biochars as Adsorbents on Soils Adsorbing Ammonium Nitrogen in Biogas Slurry

open access: yesJournal of Chemistry, 2017
The increasing concern of biogas slurry disposal and nitrogen loss in soils has brought back the interest in using biochar as an adsorbent of biogas slurry in soils. Three types of biochars, commercial activated carbon, pyrolysis productions derived from
Li-Li Wang   +4 more
doaj   +1 more source

Comparative Biogas Generation from Cow Rumen Waste and Human Fecal Slurry at Different Retention Times [PDF]

open access: yesJournal of Renewable Energy and Environment
The generation of biogas from cow rumen waste and human fecal slurry at different retention times was investigated. Microbial growth, pH, and the volume of biogas produced from the two substrates were monitored over a 60-day retention period ...
Ugochi Kemka   +5 more
doaj   +1 more source

Biogas on-farm: energy and material flow [PDF]

open access: yes, 2003
Objectives: European countries are committed to reduce CO2 emission originating from fossil fuels. On-farm produced biogas may replace energy produced from fossil fuels and so contribute to achieve the target. Up to now only in Germany a greater number
Schäfer, Winfried
core  

Biogas production from renewable lignocellulosic biomass

open access: yesInternational Journal of Environment, 2015
Effect of raw and biologically treated lignocellulosic biomass using cow dung slurry for biogas production is reported. Biomass is an energy source. Water containing biomass such as sewage sludge, cow dung slurry and lignocellulosic waste, has several ...
Venkatachalam Sundaresan Gnanambal   +1 more
doaj   +1 more source

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