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Soot is one of the products of incomplete combustion of hydrocarbon fuels. It has the property of adsorption of active and carcinogenic substances on the surface of soot particles. In this regard, in burner equipment of medium and small power, it is required to develop and implement effective environmental measures to reduce emissions of soot particles. In this paper, the fuel oil-water-air system at a wide temperature range (T500-3000K) was studied and the ratio of gas-liquid flows (water content in fuel oil 5-15) at the maximum entropy of the system and the formation of soot in flue gases wa ...More
The main objective of our study is to obtain a complex compound from natural adsorbents to purify wastewater with simultaneous sorption of chemical and microbiological substances contained therein, which contribute to disinfection and softening of water, increasing the degree of treated water saturation with calcium, magnesium salts and trace elements, while not requiring the use of sophisticated equipment. The technical result is to create a complex of adsorbents with the sorbing ability of chemical and microbiological pollution, disinfecting and softening water, enriching it with calcium ion ...More
Zarlık MAYMEKOV | Canarbek İZAKOV | Nurzat ŞAYKİYEVA | Mustafa DOLAZ | Mehmet KOBYA
В практических условиях одним из возможных решений проблемы очистки сероводородсодержащих промышленных сточных вод является электрохимическое окисление сульфидов. С учетом этих обстоятельств, в работе рассмотрена модельная система Fe–NaCl–Na2S–H2SO4–H2O, собрана экспериментальная установка и изучен процесс электрокоагуляции в широких пределах изменения температуры (288–308 К) водного раствора сероводорода. Выявлены оптимальные соотношения исходных компонентов в системе. Определены экспериментальные и расчетные водородные показатели раствора (pH). Осуществлено термодинамическое моделирование си ...More
Zarlık MAYMEKOV | Canarbek İZAKOV | Nurzat ŞAYKİYEVA | Mustafa DOLAZ | Mehmet KOBYA
Under practical conditions, one of the possible solutions to the problem of treatment of hydrogen-sulfide-containing industrial wastewater is the electrochemical oxidation of sulfides. In this work, the model system Fe-NaCl-Na2S-H2SO4-H2O is considered, an experimental setup is constructed, and the electrocoagulation process is studied in a wide (288-308 K) range of temperatures of an aqueous solution of hydrogen sulfide. The optimal ratios between the initial components in the system are determined. The experimental and calculated pH of the solution are found. The system is thermodynamically ...More
In this study, thermodynamic modelling of the process of thermal destruction of oil-contaminated soil of Ozenmunaigas JSC, which includes compounds such as carbon, silicon, aluminum, iron, calcium, magnesium, sodium, potassium, chromium, phosphorus, manganese, copper, titanium, molybdenum, nickel, vanadium, and water, was carried out. The physicochemical and thermodynamic parameters of the complex system were calculated at P0.1 MPa, T598-3000 K. The concentration distribution of components, particles, and condensed phases in the gas phase has been established. In the process of thermal destruc ...More
С целью прогнозирования и оценки величины углеродного следа в газовой фазе изучен процесс окисление мазута в избытке воздуха (альфа-фактор 1.3) в широких пределах изменения температуры (T 298–3000 К, Р 0.1 МПа). Рассчитаны равновесные термодинамические параметры (энтропия, энтальпия и внутренняя энергия) и определены концентрационные распределения С, S, N, O, H – содержащих компонентов и активных частиц в газовой фазе. На основе суммарного концентрационного распределения С, S, N, O, H – содержащих компонентов и активных частиц в газовой фазе рассчитано весовое содержание углерода. С учетом хим ...More
To predict and evaluate the carbon footprint in the gas phase, furnace fuel oil oxidation in excess air (alpha factor 1.3) was studied over a wide temperature (T 298–3000 K, P 0.1 MPa). Equilibrium thermodynamic parameters (entropy, enthalpy, and internal energy) and the concentration distributions of C-, S-, N-, O-, and H-containing components and active particles in the gas phase were determined. Based on the total concentration distribution of C-, S-, N-, O-, and H-containing components and active particles in the gas phase, the weight content of carbon was calculated. Taking into account t ...More
Nurzat ŞAYKİYEVA | Mustafa DOLAZ | Zarlık MAYMEKOV | Mehmet KOBYA
In this study, sulfide removal was carried out in the Electrocoagulation process under controlled and uncontrolled pH conditions. Under optimum conditions, electrocoagulation took place in less than 40 minutes at uncontrolled pH and less than 30 minutes at controlled pH to reduce the sulfite concentration of the effluent below 0.5 mg/L. The reaction rate constant and iron-sulfide molar ratio for sulfide removal were 14.09 x 10(-2) min(-1) and 0.97 mol/mol, respectively; under uncontrolled pH conditions, they were 22.88 x 10(-2) and 0.97 mol/mol at controlled pH. The mg sulfide removed per g Fe ...More
In the process of hydrometallurgical and pyrometallurgical production of antimony at the Kadamzhai antimony plant of the Kyrgyz Republic, large-tonnage waste was generated: tailing sand, matte, slag, off-balance ore, cakes, furnace fragments, and electrolytes in salt warehouses. The waste cake is poorly studied; accordingly, the elemental and phase compositions of antimony cake have not been established. In this regard, it was noted that antimony in the cake occurs in the form of calcium antimonate and antimony hydroxide. The content of antimony in the mine tailings cakes is from 3.53 to 4.4%, ...More
In this study, the influence of road salts on groundwater was investigated. The use of anti-ice reagents in winter requires certain precautions since the main chemical composition of the salts is chlorides. At the same time, the widely used sodium chloride does not form ion pairs in water, which means that it has a high migration ability and a weak sorption potential. In addition, the concentration of chloride salts in the components of the environment is so high (10-140 ppm). Therefore, the rapid assessment of the concentration of technogenic chlorine ion in water by pH is an urgent task. The ...More
Осуществлен учет бумажных отходов в отдельных образовательных структурных подразделениях Кыргызско-Турецкого университета «Манас» (инженерный и естественно-научный факультеты: 760 студентов и 90 человек - профессорско-преподавательский состав и административный персонал). Показано, что в течение шести месяцев текущего учебного года собрано 190 кг макулатурной бумаги, и в дальнейшем они возращены для повторного использования, после чего предусмотрен пиролиз при низких (773 К), средних (1073 К) и высоких (1173 К) температурах. Установлена химическая матрица макулатурной бумаги, которая состоит и ...More
В статье исследована система вода - кислород с целью оценки степени ее загрязненности и концентрационного распределения катионов и анионов в растворе. Результаты исследований позволили рассчитать термодинамические параметры системы, определить равновесный состав, рН и Еh ионную силу (I) раствора. Изменения температуры воды от 278 до 303 К при СО2 = 9 мг/л показали изменения концентраций отдельных катионов и анионов в водном растворе. Показано, что окислительный-восстановительный потенциал раствора с увеличением концентрации растворенного кислорода в воде от 3 до 20 мг/л при температуре 288,15 ...More