Hydrolyzed wheat straw was converted into carboxylic acids and biohydrogen using digesting bacteria. The fermentations were carried out using both free and membrane-encased thermophilic bacteria (55°C) at various OLRs (4.42-17.95g COD/L.d), in semi-continuous conditions using one or two bioreactors in a series. The highest production of biohydrogen and acetic acid was achieved at an OLR of 4.42...

one of the most important concerns in tehran municipal landfill is the production of leachate and its potential for water resources pollution, this study was undertaken to examine feasibility of biological and physico/chemical treating of high-strength landfill leachate that was collected from tehran municipal landfill. average cod of the leachate in aerobic submerged membrane bioreactor is 680...

Cell Culture Bioreactors Basic Types of Bioreactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Stirred Tank (Well Mixed) vs. Tubular Reactor (Plug Flow) . . . . . . . . . . . . . . . . . 3 Segregated Bioreactors (Dead Zone Present) Compartmentalized Bioreactors . . 4 Implication When Growth or Reaction Occurs in the Reactor . . . . . ....

Millions of tonnes plastic litter end up annually in the environment causing damage to ecosystem. There are currently no standards regulating amount microplastic wastewater, and question is, should there be? Answering this requires an understanding damages causes its removal potential from wastewater. This paper examines cost-effectiveness three wastewater treatment (activated sludge, rapid san...

Enzyme surface concentration and permeate stream obtained in the membrane module with a dynamically formed biocatalyst layer were determined experimentally using two different, polymeric membranes. Correlations were formulated to calculate these values. It was found that their variability range was so big that when controlling the transmembrane pressure and turbulence of a retentate stream, the...

Biofiltration for volatile organic compound control in waste gas streams is best operated at steady contaminant loadings. To provide long-term stable operation of a biofilter under adverse contaminant feeding conditions, an integrated bioreactor system with a gas separation membrane module installed after a biofilter was proposed for styrene treatment. Styrene was treated effectively, with aver...

An osmotic membrane bioreactor-reverse osmosis (OMBR-RO) hybrid system integrated with periodic microfiltration (MF) extraction was evaluated for simultaneous phosphorus and clean water recovery from raw sewage. In this hybrid system, the forward osmosis membrane effectively retained inorganic salts and phosphate in the bioreactor, while the MF membrane periodically bled them out for phosphorus...

A pilot scale membrane bioreactor hybrid system (MBR-HS) was evaluated for municipal wastewater treatment. This novel system comprised of a granular activated carbon-sponge fluidized bed bioreactor (GACS-FBBR) followed by a submerge membrane bioreactor (MBR) with the capacity of 2 L/min. The results indicated that the MBR-HS could effectively remove 90% DOC and 95% NH₄-N. PO₄-P removal efficien...

Know days, pollution made by the wastewater in rivers and other water body’s is one of the main concerns of environmental engineers. Membrane bioreactors are one of the earliest methods for treating swage and also to produce water that is acceptable for reuse purposes. The term membrane bioreactor expresses a combination of activated sludge and membrane separation processes. The need to process...