in this trial, the effect of different levels of echum amoneum (ea) (0.3, 30, 300 or 3000 µl) on in vitro ruminal fermentation characteristics and methane production was assessed. the parameters studied were in vitro gas production (ivgp), methane production, ammonia (nh3-n) concentration, in vitro organic matter degradability (ivomde), partitioning factor (pf) (the ratio of substrate truly deg...

Biochemical methane potential (BMP) tests were conducted for investigating the effects of alfalfa-derived biochar (AF-BC) on anaerobic digestion (AD) dairy manure under various loading AF-BC (0–10 g/L). BMP performed at mesophilic temperature (37 °C) with addition AF-BC. Biogas and volumes concentrations, water quality parameters (i.e., COD (chemical oxygen demand)), volatile fatty acids (VFAs)...

Abstract Background Subclinical infection with bovine leukemia virus (BLV) in cows can cause economic losses milk and meat production many countries, as BLV-related negative effects. The volatile fatty acids (VFAs) microbiota present the digestive tracts of contribute to cow health. Here, we exploratorily investigated VFAs rumen gut respect subclinical BLV using housed at a single farm. Results...

Real-time bioprocess monitoring is crucial for efficient operation and effective control. Aiming to develop an online strategy facilitating optimization, fault detection decision-making during wastewater treatment in a photo-biological nutrient removal (photo-BNR) process, this study investigated the application of Raman spectroscopy quantification total organic content (TOC), volatile fatty ac...

Vinasse is a continuously resulting waste by bioethanol industry with high chemical oxygen demand (COD) concentration and large volume. Anaerobic digestion (AD) the best method to treat vinasse because it converts COD biogas, so biogas can support Indonesia's primary energy need. The goal of this study was effect Fe on AD process in treating vinasse. varied 0.06, 0.29, 0.64, 0.99 g/L. results s...

Abstract Orange peels (OPs) were valorized in a lab-scale biorefinery loop for the recovery of limonene and subsequent production volatile fatty acids (VFAs) activated carbon (AC). Solid/liquid extraction was optimized using n -hexane at 85 °C with an OPs-to-solvent ratio 2:1, allowing yield 1.20% w/w. Then, post-extraction OPs used both VFAs AC. For VFA production, hydraulic retention time (HR...

Sewage sludge represents an important resource for reuse in the wastewater treatment field. Hence, thermophilic anaerobic digestion (TAD) could be alternative technique to recover renewable resources from sludge. In TAD biodegradation process, volatile fatty acids (VFAs) are intermediate products of methanogenesis. However, higher formation and accumulation VFAs leads microbial stress, resultin...

Oxytetracycline (OTC) is a commonly used antibiotic in livestock farming for controlling intestinal and respiratory infections farm animals. However, the absorption of antibiotics by animals limited, most are excreted original form with manure, which will have an impact on environment. The removal from swine manure could generally be performed via anaerobic digestion (AD). In this study, effect...

Macroalgae biomass has been considered as a promising feedstock for biogas production. In order to improve the efficiency of anaerobic digestion (AD) of macroalgae, semi-continuous fermentation was conducted to examine the effects of organic loading rate (OLR) on biogas production from Macrocystis pyrifer. Results showed that, under OLRs of 1.37, 2.74, 4.12 and 6.85kgVSsubstrate/(m3·d), the ave...