The removal of H2S in high performance biotrickling filters was investigated using a differential biotrickling filter. The differential biotrickling filter was designed to reach high gas velocities through a minature packed bed, in this case a single 4-cm open-pore polyurethane foam cube. External mass transfer was limiting below air velocities of 3000–4000 m h−1, with possible other parameters...

A 12-year-old boy presented with fever, suprapubic pain, swelling and watery discharge from the repaired wound site at the right upper thigh. He had a history of fall from a tree and sustained penetrating injury to right thigh by a sharp wooden twig two days back. Primary treatment and repair of the wound was done by a local physician. Though he was able to void, he subsequently developed supra...

bioaerosols are the most significant risk for exposed people leads to infectious diseases. this study was aimed at evaluation of physical and microscopic characteristics and submicron particulate filtration efficiency of surgical masks used in hospitals throughout iran. five types of domestic (zist filter, elhamteb and arman masks) and imported (blosom, face masks) surgical masks were tested se...

Therapeutic plasma exchange (TPE) or plasmapheresis involves the separation of plasma from whole blood. In so doing, plasma-borne humoral disease mediators are removed from the body. This can attenuate the course and severity of the underlying disease. Diseases that can be treated with TPE are classified into the following categories: (1) endocrinological, (2) neurological, (3) renal/rheumatolo...

Ex-situ biomethanation in a biotrickling filter is being developed as robust technology for the conversion of CO2 to CH4 using H2 generated from renewable power. The uses hydrogenotrophic methanogens biofilm catalyst and optimum supply nutrients imperative stable long-term operation. In this study, essential were highlighted along with systemic investigation nutrient methods. results showed tha...

INTRODUCTION The conversion of synthesis gas to methanol is practiced commercially in gas phase fixed bed reactors over a Cu/Zn/Al,O1 catalyst. However, because of the highly exothermic nature of the synthesis reactions, heat dissipation has been a bottleneck in the reactor design and process configuration. Moreover, coalderived synthesis gas, having a low H,/CO ratio, is not suitable for use i...

A 34-year-old female presented with right hypochondrial pain of 6 months following an uneventful open cholecystectomy about 5 years ago. A firm intra abdominal lump was felt in the right hypochondrium. Ultrasonography and computed tomography of the abdomen showed a large cystic lesion in relation to the porta hepatis. On exploration, a large cystic mass was found in relation to the undersurface...

Colfax, WA, operates an aerated lagoon to achieve compliance with its National Pollutant Discharge Elimination System (NPDES) permit, which currently requires biochemical oxygen demand (BOD) and total suspended solids (TSS) removal. However, ammonia removal may soon be required, and Colfax is considering a nitrifying trickling filter (NTF) that would allow them to also maintain the lagoons. To ...

In March last I tapped a Bhooteah, aged about 28, who was suffering from long-standing anasarca and ascites. His friends insisted on bringing him home at once, and as I knew he would never again face the trocar, which on this occasion he experience I rather unexpectedly, (the Bhooteahs are dreadful cowards) several strands of carbolised fine siik were introduced into the puncture, sufficiently ...