Recent papers have described new bioreactor designs. Most innovations addressed either oxygen transfer, shear induced by stirring, control of water activity in organic phase systems or waste biotreatment. Innovations made during the past year were reported in mainly three areas: bioreactor designs for increases in oxygen transfer and decreases in shear stress; bioreactors for two-phase reaction...

This study presents biotreatment of textile wastewaters using electrocoagulation and ozone processes. Ozonation process gave better results than electrocoagulation process. For electrocoagulation, optimum working conditions were found as follows: pH, 6.5; electrode type, iron electrode; current density, 20 mA/cm2; and reaction time, 15 min. Under these circumstances, values determined for elect...

The development of wastewater treatment industry has gradually entered the high-standard period and technology needs to be refined for different types wastewater. Traditional water quality indicators are not able explain new problems encountered in current process, especially potential removing pollutants via biological methods. This research proposed a method evaluating process by measuring ox...

Widespread application of chloronitrobenzenes as feedstocks for the production of industrial chemicals and pharmaceuticals has resulted in extensive environmental contamination with these toxic compounds, where they pose significant risks to the health of humans and wildlife. While biotreatment in general is an attractive solution for remediation, its effectiveness is limited with chloronitrobe...

Bark leachate is generated from sawmill operations such as log storage sites and contains polymeric tannins, carbohydrates, organic acids, phenolic and resin compounds. The present study was aimed at assessing the performance of a sequential anaerobic and aerobic treatment, for both chemical oxygen demand (COD) and phenol removal, under various combinations of operational conditions, in the con...

The objective of this study was to improve the mineralization metronidazole, a recalcitrant antibiotic by development new combined process coupling electro-Fenton and biological process. For biotreatment, various strategies were considered bioaugmentation, bioacclimatation biostimulation alone or combined. So, novelty strategy is combine advanced oxidation with conventional biotreatment activat...