Organic Waste Recycling

160 Organic waste recycling: technology and management accumulation of volatile fatty acids. Such an accumulation may occur when ...

Biofuels production 161 4.3.4 Loadings This term can be expressed as organic loading {kg COD or volatile solids (VS)/m^3 -day} a ...

162 Organic waste recycling: technology and management 4.3.5 Presence of toxic compounds For anaerobic digestion of organic wast ...

Biofuels production 163 Table 4.5 Inhibitors of biomethanation (U.S. EPA 1979) Parameters Inhibiting concentration (mg/L) Volati ...

164 Organic waste recycling: technology and management Semi-continuous operation This involves feeding of the digester on a more ...

Biofuels production 165 equal to the mean cell residence time (șc) in the digester. To provide longer șc in the digesters, attac ...

166 Organic waste recycling: technology and management gas pressure in the dome of between 1 and 1.5 m of water. The high pressu ...

Biofuels production 167 Figure 4.7 Low-cost biogas digester (note a unique mixing device) Table 4.6 Characteristics of raw mater ...

168 Organic waste recycling: technology and management pH 7.4 7.4 7.4 Total Kjeldahl nitrogen (mg/L) 890 900 880 Chemical oxygen ...

Biofuels production 169 heterogenous substrate comprising of nightsoil, chopped and sun-dried water hyacinth and rice straw (Pol ...

170 Organic waste recycling: technology and management Figure 4.8 Mean daily biogas production at hydraulic retention times of 3 ...

Biofuels production 171 Plug-flow digester (Horizontal displacement digesters) This type of digester consists of a long trench c ...

172 Organic waste recycling: technology and management (b) Figure 4.9 (a) Schematic of floating gas holder digester. (b) A float ...

Biofuels production 173 Gas pressure High: up to 1000 mm water column Varying according to gas use Automatic release of excessiv ...

174 Organic waste recycling: technology and management Similar to the plug-flow digester is the 'bag digester' which is commonly ...

Biofuels production 175 Figure 4.12 Fixed-dome digester with separate gas holder Separate gas holder digester This kind of syste ...

176 Organic waste recycling: technology and management Table 4.11 Design criteria and performance data of dispersed growth bioga ...

Biofuels production 177 (b) Figure 4.13 (a) Schematic diagram of anaerobic digester at Huay Kwang, Bangkok, Thailand. (b) Anaero ...

178 Organic waste recycling: technology and management porosity of some packing media used for anaerobic filters. The waste flow ...

Biofuels production 179 Figure 4.15 Packing media for anaerobic filters: (a) pall ring; (b) crossflow media; (c) tubular media T ...