نتایج جستجو برای: ethylene oxide

تعداد نتایج: 201578  

Journal: :international journal of environmental research 2012
m. shakerkhatibi p. monajemi m.t. jafarzadeh s.a. mokhtari m.r. farshchian

the sequencing batch reactors were developed to treat the actual wastewater from ethyleneglycol/ethylene oxide producing industry. four identical reactors with total and effective liquid volumes of 9and 7 l were operated respectively in parallel. laboratory experiments were conducted with different organicloadings of 500, 1000, 1500 and 3000 g-cod/m3.day and the performance of the reactors was ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1996
fereydoon milani nejad siranoush sharzad a. bagher zadeh

oxidation of ethylene to ethylene oxide over silver catalyst and selenium modified catalyst has been studied by continuous flow and pulse techniques over the temperature range of 230-280 °c. the results are discussed in terms of reaction mechanisms proposed by others, rejecting mechanisms which involve peroxide formation. it has been shown that not only selectivity towards ethylene oxide produc...

Journal: :journal of particle science & technology 2015
mehrdad manteghain faeze tari behrooz bozorgi

this paper focused on a simple approach for synthesis of molybdenum oxide (moo3) nanoparticles and reports a facile route for synthesis of such nanoparticles, using microwave irradiation as a homogenous and powerful source of heating, using ethylene glycol as the solvent and heating medium. for more investigations, besides microwave heating, the obtained solutions were also treated by conventio...

ژورنال: سلامت کار ایران 2011
سلیمانی, اسماعیل, نقاب, مسعود,

  Background and Aims Ethylene oxide is used as a sterilizing agent in health care industries. The present study aimed to assess and recognize the nature of pulmonary reactions, if any, associated with occupational exposure to ethylene oxide and to investigate the prevalence of dermal, visual, neurologic, reproductive, hematologic, hepatic and renal disorders .   Methods  Forty exposed and 47 u...

2012
Rachana Devi

Ethylene Oxide was first reported in 1859 as being prepared from the reaction of potassium hydroxide on ethylene chlorohydrins. But nowadays it is mainly prepared by direct oxidation of ethylene with oxygen on silver based catalyst. In its final product stream along with ethylene oxide many other impurities like formaldehyde, acetaldehyde, unconverted ethylene, water and other inert gases are a...

Journal: :physical chemistry research 0
mohhamad mahdi heyhat assistance professor salimeh kimiagar islamic azad university- central tehran branch - tehran - iran narjes ghanbaryan sani gasem abad master student elnaz feyzi master student

graphene oxide was prepared using modified hummers method. stable ethylene-glycol nanofluids containing graphene oxide nanosheets were provided. nd: yag pulsed laser was applied to prepare reduced nanofluids. experimental results revealed that thermal conductivity of the nanofluids is increased with increasing the concentration of graphene oxide (go) in ethylene glycol. the enhancement ratio of...

A. Bagher Zadeh Fereydoon Milani Nejad Siranoush Sharzad

Oxidation of ethylene to ethylene oxide over silver catalyst and selenium modified catalyst has been studied by continuous flow and pulse techniques over the temperature range of 230-280 °C. The results are discussed in terms of reaction mechanisms proposed by others, rejecting mechanisms which involve peroxide formation. It has been shown that not only selectivity towards ethylene oxide pr...

Journal: :Journal of clinical pathology 1979
E H Gillespie J M Jackson G R Owen

Tests show that ethylene oxide penetrates and can sterilise long narrow tubes in a hospital ethylene oxide steriliser. Residual ethylene oxide levels in plastic tubing after sterilisation have been estimated. Although initially the levels were very high, storage for four days at room temperature reduced them to a safe level. If adequate controls of the sterilising process and storage are carrie...

Journal: :International journal of occupational medicine and environmental health 1999
W Wesołowski K Sitarek

Occupational exposure to ethylene oxide was assessed among the workers remaining in direct contact with ethylene oxide or with ethylene oxide-sterilized instruments in 13 hospitals located in the city of Lódź and its suburbs. Individual dosimetry and stationary sampling methods were employed. The samples collected from the occupational environment were analysed by gas chromatography with mass d...

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