نتایج جستجو برای: air/sulphur dioxide flow rate 0.15 – 0.4 m3/s and sulphur dioxide concentration in inlet air 100ppm.

تعداد نتایج: 21874090  

Journal: :نشریه دانشکده فنی 0
علی اصغر حمیدی اصغر صدیق زاده منیره طاهرخانی علیرضا کمیزی

in this investigation, the performance of a tower for absorption of sulphur dioxide gas into calcium carbonate solution has been studied. the trays had no downcomer and the tower itself was a scaled down pilot from industrial equipment. the industrial scale tower was used for clean up of 110000 m3/hr gas using 40 m3/hr alkaline solution. the study was composed of two parts. in the first section...

Ali Asghar Hamidi Ali Reza Kamizi Asghar Sedighzadeh Monireh Taherkhani

In this investigation, the performance of a tower for absorption of sulphur dioxide gas into calcium carbonate solution has been studied. The trays had no downcomer and the tower itself was a scaled down pilot from industrial equipment. The industrial scale tower was used for clean up of 110000 m3/hr gas using 40 m3/hr alkaline solution. The study was composed of two parts. In the first section...

Journal: :health scope 0
mohammad javad mohammadi student research committee, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, clinical research development center, razi teaching hospital, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9355439707, fax: +98-6113361544 gholamreza goudarzi department of environmental health engineering, school of public health, clinical research development center, razi teaching hospital, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; environmental technologies research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran sahar geravandi department of nursing, islamic azad university, tehran medical sciences branch, tehran, ir iran; clinical research development center, razi teaching hospital, ahvaz jundishapur university of medical sciences, ahvaz, ir iran ahmad reza yari department of environmental health, school of health, research center for environmental pollutants, qom university of medical sciences, qom, ir iran bashir ghalani department of industrial engineering, islamic azad university, ahvaz, ir iran saeed shirali department of laboratory sciences, school of paramedical sciences, hyperlipidemia research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

conclusions results of this study showed that the screen3 software is one of the popular models for estimating the distribution of air pollutants. nitrogen dioxide emissions are highly regulated in most industrialized regions. decreased emissions from fuel combustion, the use of scrubbers and filters that absorb pollution can be very useful for reduction and control of nitrogen dioxide emission...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

The study provides a statistical trend analysis of different air pollutants using Mann-Kendall and Sen’s slope estimator approach on past pollutants statistics from air quality index station of Varanasi, India. Further, using autoregressive integrated moving average model, future values of air pollutant levels are predicted. Carbon monoxide, nitrogen dioxide, sulphur dioxide, particu...

ژورنال: سلامت کار ایران 2017

Background and aims: The emission of sulfur dioxide in air has hazardous effects on human health and environment. In this research the use of surfactants with sodium bicarbonate and limestone for the removal of sulfur dioxide was studied. Methods: A packed scrubber was used and the effect of absorbents (limestone or sodium bicarbonate), the kind and concentration of surfactants were assessed...

ژورنال: سلامت کار ایران 2018

    Background and aims: With the increasing air pollution to volatile organic compounds, in critical demand of a new environmentally, friendly technologies to remove these contaminants from the air stream is of interest to everyone. Photocatalytic processes, including processes, are considered, radiation may be in the future as a new and promising technology used for the removal ...

Carbon dioxide capture is a key issue in climate change mitigation. For decades the removal of carbon dioxide has been an essential step in many industrial processing operations such as the synthesis of ammonia, natural gas purification, and oil refining. In this study, a rotating packed bed has been designed for absorption of carbon dioxide from an air stream. The rotating packed bed is a comp...

Journal: :Journal of environmental biology 2008
A K Dwivedi B D Tripathi Shashi

Present study deals with the relationship between ambient air sulphurdioxide and sulphate content in leaf of selected tropical plant species, Ficus religiosa. The study reveals a positive correlation between ambient air sulphur dioxide and sulphate in the leaves. Two way ANOVA finds the obtained values to be highly significant (p < 0.001). Amount of sulphate in leaves shows positive correlation...

Journal: :iranian journal of toxicology 0
برهان منصوری borhan mansouri young researchers club, kermanshah branch, islamic azad university, kermanshah, iran. امیرحسین حمیدیان amir hossein hamidian department of environment, faculty of natural resources, university of tehran, karaj, iran.

background: today, air pollution is one of the major problems in large cities including isfahan. methods: the objective of this study was to investigate the variations of ozone (o3), carbon monoxide (co), nitric oxide (no), nitrogen dioxide (no2), nitrogen oxides (nox), sulphur dioxide (so2), and particulate matter (pm10) concentrations in different months at three stations and also to explore ...

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