Bacterial community composition during steady-state, fermentative H2 production was compared across a range of organic loading rates (OLRs) of 0.5–19 g COD l 1 h 1 in a 2-l continuous flow reactor at 30 C. The varied OLRs were achieved with glucose concentrations of 2.5–10 g l 1 and hydraulic retention times of 1–10 h. The synthetic wastewater feed was amended with L-cysteine and maintained at ...

The wastewater generated from pharmaceutical industry generally contain high organic load and the treatment is primarily carried out using two major types of biological methods; aerobic and anaerobic. However, due to high strength, it is infeasible to treat some pharmaceutical wastewater using aerobic biological processes. As an alternative, an anaerobic process is preferred to remove high stre...

The effect of the absence of trace elements on the conversion of a mixture of volatile fatty acids by a distillery anaerobic granular sludge was investigated. Two UASB reactors were operated under identical operational conditions except for the influent trace metal concentrations, during 140 days. Experiments were carried out in three periods, where different organic loading rates (OLR) were ap...

Entrapment of methane-producing microorganisms between semi-permeable synthetic membranes in a multi-layer membrane bioreactor (MMBR) was studied and compared to the digestion capacity of a free-cell digester, using a hydraulic retention time of one day and organic loading rates (OLR) of 3.08, 6.16, and 8.16 g COD/L·day. The reactor was designed to retain bacterial cells with uprising plug flow...

Biokinetic parameters help to describe the rate of substrate utilization and biomass production or growth by microbial action, which is important design process performance optimization wastewater treatment. Although studies biokinetic aerobic granular sludge (AGS) systems have been increasing lately, significance for each value in terms maximum specific (μ<sub>max</sub>), concentra...

Increasing worldwide milk manufacturing and dairy processing resulted in producing more effluents, thus effective management of wastewater is now the most important issue. This study used a new design pilot plant-scale hybrid anaerobic labyrinth-flow bioreactor (AL-FB) to increase efficiency biodegradation biogas productivity improve microflora performance. In addition, effluent recirculation w...

The environmental pollution due to wastewater, especially domestic is becoming more serious. Thus, this study was performed assess the removal of pollutants by combination wetland technology, specifically constructed (CW), with Para grass (Brachiaria mutica) together adsorption red sludge. With an organic loading rate (OLR) 120 (kg COD/ha/day), treatment efficiency for wastewater in quite high ...

upflow anaerobic sludge blanket (uasb) reactors have been widely used for treatment of industrial wastewater. in this study, performance of a lab-scale up-flow anaerobic sludge blanket (uasb) reactor, treating a chemical synthesis-based pharmaceutical wastewater, was evaluated under different operating conditions. a (p.e) pipe with a diameter of 250 mm and total height of 120 cm and effective h...

The aim of this study was to investigate the impact biochar addition on mesophilic semi-continuous anaerobic digestion swine waste with a focus effects organic loading rate (OLR) biogas production, methane yield, total volatile fatty acids (TVFA), alkalinity, ammonium, solids (VS) removal efficiency and process stability. Four reactors, two amended (R1 R2) without as controls (R3 R4), were oper...

Multiple anodes can significantly enhance the treatment potential of constructed wetlands coupled with a microbial fuel cell (CW-MFC) system, which has not yet been explored. Thus, present study evaluates multi-anodes and single cathode-based CW-MFC at higher organic loading rates for performance bioelectricity generation. For this purpose, two identical but different materials, i.e., graphite ...