Volumetric mass transfer coefficients (kLa), and gas holdups (εG) were studied for the oxygen transfer into organic slurries.
NutMatch was applied to four different crop rotations subjected to four fertiliser strategies differing in the use of the organic fertilisers cattle slurry, pig slurry or compost, next to mineral fertiliser.
Under the EEG 2014, higher reference prices apply for biogas plants based primarily on organic waste or slurry (§ 45 and 46 EEG 2014); the EEG 2017 maintains comparatively high administered remuneration rates for small slurry-based biogas plants (§ 44 EEG 2017).
Bacterial and fungal growths were highly dependent on pH and labile organic C. Pig slurry supported the highest microbial growth: applied alone stimulated fungal growth, whereas applied with MW stimulated bacterial growth.
A simple and fast method for the multi-elemental determination of 18 inorganic constituents (P, S, Cl, K, Ca, Ti, Cr, V, Mn, Fe, Ni, Cu, Zn, Br, Rb, Sr, Ba and Pb) in organic fertilizers employing slurry sampling and total reflection X-ray fluorescence (TXRF) is presented.
Sediment was homogenised to slurry (organic matter content, 6.98±0.52%) and distributed between aquaria (70×80×20 cm, n = 15; see Figure S1 in Supporting Information).
The arrangement of the photocatalyst components was tested for degradation of model organics in a slurry and a recirculating thin film photoreactor.
The average organic P in the slurry for both diets with aeration was about 17·4% higher than that in the same slurry without aeration.
TGA and DSC results confirmed that all the organic components in the slurry were completely decomposed at temperatures below 600 °C.
Two tillage treatments (CT, conventional tillage; NT, no-tillage) and three rates of N fertilization (0; 75 kg N ha−1, applied at top-dressing; 150 kg N ha−1, applied at pre-sowing and at top-dressing at equal rate), with two types of fertilizers (ammonium-based mineral fertilizer and organic fertilizer with pig slurry), were compared in a randomized block design with three replications.
