Loading...
Search for:
respiratory-diseases
0.005 seconds
Removal of airborne hexavalent chromium mist using chitosan gel beads as a new control approach
, Article International Journal of Environmental Science and Technology ; Volume 3, Issue 3 , 2006 , Pages 305-313 ; 17351472 (ISSN) ; Golbabaei, F ; Hamedi, J ; Nourijelyani, K ; Shahtaheri, S. J ; Moosavi, S. R ; Sharif University of Technology
CEERS
2006
Abstract
Airborne hexavalent chromium is a known human respiratory carcinogen and allergen. Many workers are exposed to hexavalent chromium in various processes which chromium electroplating plants are the most common. In this study, the feasibility of a new control approach to remove this pollutant using chitosan beads as a biosorbent was investigated. Hexavalent chromium sorption was studied relative to pH, pollution concentration, sorbent concentration, temperature, and air velocity using one factor at a time approach and Taguchi experimental design. Polluted air with different chromium mist concentrations (10-5000 μg/m3) was contacted to chitosan beads (3.3-20 g/L), floating in distilled water...
Numerical Study of SARS-CoV-2 Virus Dispersion in Hospital Wards
, M.Sc. Thesis Sharif University of Technology ; Abdekhodaie, Mohammad Jafar (Supervisor)
Abstract
The ongoing Covid-19 pandemic has driven our attention to a simulation of virus dispersion to complete our understanding of airborne transmission. A myriad of studies have shown that respiratory diseases such as MERS, SARS, and COVID-19 can be transmitted by virus-laden droplets released during coughs, sneezing, and normal breathing. To mitigate and prevent the spread of such infectious diseases, investigation of the transmission routes is of great importance. This study has been fueled to harness the CFD tool to simulate the virus-laden droplets dispersion in hospitals inwards. Because of the limitations intertwined with experimental works such as the risk of infection of experimenters, and...