The research explores the possibilities of biogas extraction from aquaculture waste. Samples fish-farming pool sludge were taken a fish farm, which is located in Krāslava district, Kalnieši rural municipality. Prior to experimental fermentation and biogas, samples analyzed order determine their moisture organic matter content (OMC). For purpose increasing OMC available for fermentation, was mix...

Food security depends on sustainable phosphorus (P) fertilisers, which at present are mostly supplied from a finite rock phosphate source. Phosphate (PO43−) and ammonium (NH4+) in dairy processing wastewater can be recovered as struvite (Mg + NH4+ PO43− 6H20), nutrient rich mineral for fertiliser application. The objectives of this study were to (1) quantify the effects of, pH, temperature Mg: ...

Background and purpose: In a recent century, the amount of construction waste has increased significantly. Although the building industry has a considerable role in the development of a society, it is regarded as an environmentally destructive. Source reduction is the highest goal in the waste management hierarchy and is in priority. It also has economic benefits by reducing costs associated wi...

In presented work, long-term operation of a laboratory anaerobic reactor processing food waste is discussed. Food waste is potentially well available municipal bio waste with light biodegradability and with year-long production mostly in big cities. About 200 days of laboratory work were focused on characterization of tested food waste quality as well as on feasibility of biogas production from...