نتایج جستجو برای: corrosiveness
تعداد نتایج: 103 فیلتر نتایج به سال:
Background and Aims: In this study we measured the quality, corrosiveness, Ryznar stability index, and heavy metal leakage in the drinking water distribution networks of Ahvaz. Materials and Methods : A total of 76 sampling sites were selected for this purpose the sites included inlet and outlet points in water treatment plants as well as consumers taps. We collected 456 samples in six stages a...
Efficient utilisation of renewable biomass resources, particularly lignocellulosic biomass, for the production of chemicals and fuels has attracted much attention in recent years. The catalytic conversion of cellulose, the main component of lignocellulosic biomass, selectively into a platform chemical such as glucose, 5-hydroxymethyl furfural (HMF), sorbitol or gluconic acid under mild conditio...
A rapid cyclic voltammetric method for studying the influence of cement factors on the corrosion of embedded iron and steel in hardened cement paste is described. The technique employs a “cement electrode” consisting of an iron or steel wire embedded in a miniature cylinder of hardened cement paste. The rapid cyclic voltammetric method is fast, reproducible, and provides information on the corr...
Serious cases of corrosion of metallic structures under both alternating current (ac) and cathodic protection (cp) have been reported. The objective of this research is to propose a mechanism by which ac affects the nano sized/structured surface films formed on metals under cp. A model will be proposed and experimentally validated, in order to relate the metal corrosiveness to its nano sized/st...
Backgrounds and Objectives: Due to having features such as toxicity, corrosiveness, ignitability, reactivity or other similar characteristics, hazardous wastes refer to the wastes that jeopardize man's health and environment. A study was required to identify the hazardous wastes in Tehran University of Medical Sciences (TUMS), since it plays an important role in the development of the country's...
The processes of metal corrosion in water-oil mixtures depending on the level water mineralization, reaction environment, and ratio between volumes oil aqueous solutions at temperatures 20 oC 80 were studied. It is shown that corrosiveness medium against metals becomes higher with increasing mineralization acidic content decreasing pH temperature. rate significantly reduced presence oil. Increa...
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