The effectiveness of carbohydrate addition and the use of ultrasonication as a pretreatment for the mesophilic anaerobic digestion of saline aquacultural sludge was assessed. Analyses were conducted using an anaerobic sequencing batch reactor (ASBR), which included stopped gas production attributed to the saline inhibition. After increasing the C : N ratio, gas production was observed, and the ...

Single-chamber air-cathode microbial fuel cells (MFCs) were used to generate electricity from fermented primary sludge. Fermentation (30 °C, 9 days) decreased total suspended solids (26.1-16.5 g/L), volatile suspended solids (24.1-15.3g/L) and pH (5.7-4.5), and increased conductivity (2.4-4.7 mS/cm), soluble COD (2.66-15.5 g/L), and volatile fatty acids (1.9-10.1g/L). To lower the COD and incre...

We have observed coherent optical and acoustic phonon generation, which are strongly coupled to the charge-ordering sCOd transition in La1−xCaxMnO3 sx=0.5, 0.58d using femtosecond optical pump-probe spectroscopy. Coherent optical phonons, observed at low temperatures, disappear above the charge-ordering temperature TCO, while coherent acoustic phonons display the opposite behavior, disappearing...

Organic products generated from waste activated sludge hydrolysis and fermentation process could be used as supplementary carbon source for enhanced biological nutrient removal. However, accompanied with organics production, large amount of ammonia nitrogen (NH4+-N) and soluble orthophosphorus (SOP) released, which would be negative to the reutilization of sludge carbon source. In this study, b...

Snow cover is an important water source for vegetation growth in arid and semi-arid areas, grassland phenology provides valuable information on the response of terrestrial ecosystems to climate change. The Mongolian Plateau features both abundant snow resources typical ecosystems. In recent years, with intensification global change, has changed correspondingly, resulting effects growth. this st...

Performance of a rotating biological contactor (RBC) in treating municipal wastewater from primary sedimentation basin and anaerobically treated industrial effluent from an upflow anaerobic sludge blanket (UASB) reactor was investigated. The 280-L six-stage RBC pilot was operated at different organic loading rates and biodisc speeds. The overall removal efficiencies of soluble BOD decreased wit...

This study evaluated the hydrolysis and acidogenesis of food waste at different operating pHs (uncontrolled, 5.5, 6.5, 7.5, 8.5) in a leachate bed reactor (LBR) room temperature. LBR operation pH 6.5–8.5 resulted yield 718–729 g SCOD/kg VSadded, which was statistically (p ≤ 0.05) higher than that obtained 5.5 (577 VSadded) uncontrolled (462 VSadded). The rate 6.5 highest amongst all values. Sta...

The core objective of this analysis is to implement a combination alkaline (NaOH) and sonication pretreatment techniques produce energy-efficient biohydrogen from the marine macroalgae Chaetomorpha antennina. Anaerobic fermentation was implemented in control, sonic solubilization (SS) alkali (SAS) for 15 days. In production 40 mL H2/gCOD obtained. sonicator intensities varied 10% 90% period 1 h...