Abstract:Для боротьби з корозією використовують корозійностійкі сплави, що вимагає великих затрат і не є достатньо надійним засобом, та інгібітори корозії, які потрібно постійно вдосконалювати для підвищення їх ефектив ності та зменшення собівартості. Оскільки корозія характеризується руйнуванням мате ріалу внаслідок взаємодії із навколишнім сере довищем, то одним із доцільних методів її мінімізації є використання інгібіторів. Тому актуальним завданням охорони навколишньо го середовища та економічного розвитку країни є… Show more
“…Thus, the development of methods for effective stabilization water treatment will reduce corrosion and scale formation in heat exchange equipment, as well as allows switching to closed systems of water consumption and rational use of water (Gomelya et al 2020. The development of scientific bases of resource-saving technologies will increase the level of ecological safety of objects, region and country.…”
The processes of desalination of weakly mineralized waters using a reverse osmosis membrane were studied. The operational efficiency of membranes is limited mainly by membrane contamination. It was shown that the preliminary mechanical water purification helps to increase the productivity and selectivity of the membrane. One of the main causes of membrane contamination is the formation of carbonate deposits on their surface. One way to prevent membrane contamination is to dose antiscalants. It was established that the use of hydrolyzed polyacrylonitrile (HPAN) and hydrolyzed polyacrylamide (HPAA) as a stabilizer of scale formation is effective for concentrates of reverse osmosis desalination of water.
“…Thus, the development of methods for effective stabilization water treatment will reduce corrosion and scale formation in heat exchange equipment, as well as allows switching to closed systems of water consumption and rational use of water (Gomelya et al 2020. The development of scientific bases of resource-saving technologies will increase the level of ecological safety of objects, region and country.…”
The processes of desalination of weakly mineralized waters using a reverse osmosis membrane were studied. The operational efficiency of membranes is limited mainly by membrane contamination. It was shown that the preliminary mechanical water purification helps to increase the productivity and selectivity of the membrane. One of the main causes of membrane contamination is the formation of carbonate deposits on their surface. One way to prevent membrane contamination is to dose antiscalants. It was established that the use of hydrolyzed polyacrylonitrile (HPAN) and hydrolyzed polyacrylamide (HPAA) as a stabilizer of scale formation is effective for concentrates of reverse osmosis desalination of water.
“…Metals remain the main structural material that is indispensable in a series of industrial synthetic substances production. There is an enhanced need to protect them against corrosion given the increase in the volume of metal production [1]. The corroded metal loses all of its mineral properties due to its degradation and returns to the form in which it originally existed as an ore by chemical combination with a non-metal such as oxygen, sulfur, etc.…”
This work aims to the identify level of hybrid nanocomposite coatings of a stainless steel alloy that is used in the manufacture of mineral reservoirs for the storage of oil products in the oil products distribution company (Opdc). Corrosion is one of modern society's most serious engineering problems where losses incurred due to it each year are estimated at billions of dollars. Technological options have to be exercised to protect against corrosion and an effort to combat these losses. To overcome this severe problem, several successful efforts have been made using corrosion inhibitors. Corrosion inhibitors are compounds used in low concentrations to prevent or slow down the corrosion process. The used metal (low carbon steel St-37) was coated with zinc phosphate as an initial layer, cellulose nitrate reinforced with MgO nanopowder by weight percentage (3 wt. %) as an intermediate layer, and epoxy resin reinforced with weight reinforcement percentage (2 wt. %) of particles (MgO+coke coal (1:1)) as a final layer. In addition, a cognitive scale was prepared from (hardness, adhesion strength, chemical corrosion test as well as electrochemical corrosion test. It was found the hardness increased with coated by an initial layer and the value of adhesion strength of triple coating layers was (232 Psi). Chemical and electrochemical corrosion tests have shown the efficiency of prepared coating layers in corrosion inhibiting and metal protection. The used inhibitors in the work are inexpensive materials that allow solving the problem of rational nature management by reducing corrosion and providing the transition to the use of environmentally safe efficient technologies
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