Olive oil and pig productions are important industries in Portugal that generate large volumes of wastewater with high organic load toxicity, raising environmental concerns. The principal objective this study is to energetically valorize these effluents—piggery effluent olive mill wastewater—through the anaerobic digestion biogas/methane production, by means complementarity concept. Several mix...

The existing recycling methods of PHA-based material are ineffective in terms increasing resource efficiency and the production high value end-of-life products. Therefore, this study, a novel approach acidogenic fermentation was proposed to recycle PHB-based composites reinforced with natural fibers such as cellulose, chitin, chitosan, orange waste, sawdust, soy protein, starch. inclusion sawdu...

Enrofloxacin (ENR) is one of the most commonly used antibiotics in pig farms. In this study, using fresh manure and corn straw powder as substrates, effects different concentrations ENR (2.5, 10, 20 mg/L) on anaerobic digestion completely mixed reactors were investigated. A relatively low concentration (2.5 increased methane production by 47.58% compared with control group. Among volatile fatty...

Microbial electrosynthesis (MES) is a promising technology to convert CO2 into value-added chemicals. Enhancing the interactions between biofilms and electrodes key of bioelectrochemical systems (BES). In this work, we studied conversion by MES in reactors equipped with novel gas diffusion (GDEs) modified polyaniline (PANI) polymer binary doped H2SO4 ammonium lauryl sulfate. The enhanced conduc...

In this review the developments made within area of needle-shaped Clark-type gas sensors are summarized. Emphasis will be on design and functioning sensors, but examples use in various environments also included. Microscale have been constructed for O2, N2O, NO, H2S CO2. The tip diameters often 10−70 μm, can considerably larger, O2 with tips down to < 2 μm. excellent long term stability conferr...

Abstract The effect of pH and extraction temperature on flux, recovery, mass transfer coefficient separation factor volatile fatty acids (VFAs) alcohols from synthetic solutions cheese whey fermentate was investigated using a silicone membrane contactor with water as extractant. allowed undissociated only, resulting in substantially higher recovery efficiencies at 3 than 5. Furthermore, the non...

To concurrently control root-knot nematodes and treat pig manure further clarify the mechanism of anaerobic digestion slurries on nematodes, optimal conditions for producing volatile fatty acids (VFAs) were studied, relationship between carboxyl group in fermentation mortality rate was also researched. When condition parameters set as initial pH=10.0, temperature 25 °C, total solid (TS) loading...

To explore whether or not the gossypol varied in cottonseed by-products affect rumen degradability and fermentation efficiency, an vitro cumulative gas production experiment was applied with mixed microorganism to compare characteristics of whole (WCS, n = 3 samples), meal (CSM, hull (CSH, 2 samples). The five-replicate per sample incubation time continuously lasted for 0.5, 1.5, 3, 6, 12, 24, ...

The mixing of slurry in an anaerobic digester (AD) is one many key parameters, which have a significant effect on specific biogas yield (BY) and volatile solid (VS) removal rate. determination the optimum regime very complex as it depends large number internal external factors such microbial community, rheology slurry, impeller design, intensity, intervals. novelty this study investigation lab-...