The water electrolysis appears as a sustainable solution for hydrogen production. proton exchange membrane electrolyzers (PEM-E) play an increasingly important role in the development of technology. Fast analysis PEM-E efficiency using mathematical approach is effective tool improvement these devices. This work presents closed-form single cell modelling. considers charge and mass transport bala...

background: electrocoagulation is a technique involving the electrolytic addition of coagulating metal ions directly from sacrificial electrodes. these ions coagulate with turbidity agents in the water, in a similar manner to the addition of coagulating chemicals such as alum and ferric chloride, and allow the easier removal of the pollutants. purpose of this study was to conduct experimental i...

Ozonation-biofiltration as an integrated process for low pressure membrane (LPM) pre-treatment appears quite promising. It has recently been demonstrated to successfully reduce membrane fouling and the combined process is able to produce high quality water, provide robustness, and produce water which consistently meets strict regulations. However, this integrated technology is neither commonly ...

The eff ect of pre-treatment on the permeation property of the Nafi on ionomer membrane has been evaluated. The membranes were subjected to diff erent pre-treatment procedures, viz treated with acid at room temperature, boiling with acid or boiling with water followed by cold acid. Diff erent characterization techniques were used to understand the changes. From UV-Visib...

conclusions intra-ophthalmic artery melphalan is an effective treatment for advanced cases of retinoblastoma, with a reasonable level of success. in the short follow up period of this study, it appears that the primary cases showed better results in the control of tumor. background the management of retinoblastoma remains a challenge to the multidisciplinary team, particularly as treatment affe...

The technique to fabricate nanofibrous mat by electro-spinning has been known for a long time. But the attempts to use the electospun nanofiber mats, also known as electro-spun nanofiber membranes (ENMs), for filtration purposes began only recently. Among many membrane filtration processes, air cleaning by the removal of dust particles has already been commercialized and the product has been in...