METHODS FOR MITIGATING THE NEGATIVE ENVIRONMENTAL IMPACT OF FUELS AND LUBRICANTS IN VEHICLE USE
Dang’ara District, Technical School No. 3,
Department of Business and Management
Production Training Master: Nabiyeva Xilolaxon Axrorjon qizi
Annotatsiya: Ushbu ilmiy maqolada avtomobil transporti vositalaridan foydalanish jarayonida yonilgʻi va moylash materiallarining (YMM) atrof-muhitga, xususan, tuproq, suv resurslari va atmosfera havosiga koʻrsatadigan salbiy ta’siri atroflicha tahlil qilingan. Tadqiqot davomida ishlatilgan motor va transmissiya moylarining kimyoviy tarkibi, ularning tarkibidagi ogʻir metallar va toksik birikmalarning ekotizimga kirib borish mexanizmlari oʻrganildi. Maqolada avtomobillarga texnik xizmat koʻrsatish maskanlarida hosil boʻladigan chiqindi moylarni yigʻish va utilizatsiya qilishning hozirgi holati tanqidiy koʻrib chiqilgan. Shuningdek, atrof-muhit ifloslanishini kamaytirish maqsadida biologik parchalanadigan moylash materiallarini joriy etish va chiqindi moylarni regeneratsiya qilish texnologiyalari samaradorligi asoslab berilgan.
Kalit so’zlar: avtomobil transporti, yonilgʻi-moylash materiallari, ekologik xavfsizlik, utilizatsiya, tuproq ifloslanishi, regeneratsiya, biologik moylar
Аннотация: В данной научной статье всесторонне проанализировано негативное воздействие топливно-смазочных материалов (ТСМ), используемых в процессе эксплуатации автомобильного транспорта, на окружающую среду, в частности на почву, водные ресурсы и атмосферный воздух. В ходе исследования изучены химический состав отработанных моторных и трансмиссионных масел, а также механизмы проникновения содержащихся в них тяжелых металлов и токсичных соединений в экосистему. В статье критически рассмотрено текущее состояние сбора и утилизации отработанных масел, образующихся на станциях технического обслуживания автомобилей. Кроме того, обоснована эффективность внедрения биологически разлагаемых смазочных материалов и технологий регенерации отработанных масел с целью снижения загрязнения окружающей среды.
Ключевые слова: автомобильный транспорт, топливно-смазочные материалы, экологическая безопасность, утилизация, загрязнение почвы, регенерация, биологические масла
Abstract: This scientific article provides a comprehensive analysis of the negative impact of fuel and lubricants (F&L) used in motor vehicle operation on the environment, particularly on soil, water resources, and atmospheric air. The study examines the chemical composition of used engine and transmission oils, as well as the mechanisms by which heavy metals and toxic compounds contained in them enter the ecosystem. The article critically reviews the current state of collection and disposal of waste oils generated at vehicle maintenance facilities. Furthermore, the effectiveness of introducing biodegradable lubricants and technologies for regenerating used oils is substantiated as a means of reducing environmental pollution.
Keywords: motor transport, fuel and lubricants, environmental safety, disposal, soil pollution, regeneration, biodegradable lubricants
INTRODUCTION
In the modern world, the rapid growth of motorization not only contributes to economic development but also causes significant environmental problems. During the use of automobiles, not only the gases produced by fuel combustion but also the direct leakage and improper disposal of lubricants (LMs) pose a serious threat to the environment. Globally, millions of tons of used engine and transmission oils are generated annually, yet only a fraction is properly recycled.
Fuel and lubricants are complex hydrocarbon mixtures to which various chemical additives are added to enhance operational properties. These additives contain phenols, sulfate compounds, and heavy metals, which become highly toxic when released into the environment. In particular, leaks occurring during vehicle maintenance or due to malfunctions degrade the fertile layer of soil and contaminate groundwater.
The aim of this study is to develop scientific and technical solutions to reduce the environmental impact of LMs used in automobiles and to analyze effective methods for managing waste oils. The relevance of the topic is directly related to ensuring ecological safety and the rational use of natural resources in the Republic of Uzbekistan.
RESEARCH METHODOLOGY
During the study, statistical data on the consumption of LMs and the generation of waste oils in automobile transport enterprises and service centers (SCs) were analyzed. The research methodology consisted of several stages.
In the first stage, the chemical composition of used engine oils was studied under laboratory conditions using chromatography. Changes in composition between new oils and oils after 10,000 km of operation were compared.
In the second stage, model experiments were conducted to determine the rate at which LMs penetrate the soil and their effect on microbiological activity. The kinetics of hydrocarbon degradation in the soil over time was calculated using the formula:
In the third stage, physical-chemical methods of waste oil processing, including vacuum distillation, adsorption purification, and coagulation, were comparatively analyzed. The study also considered foreign experiences in LM utilization (Germany, USA) and the possibility of adapting them to local conditions. Mathematical statistics methods were applied to process the data, ensuring the reliability of the results. The objects of study were major auto service centers and adjacent areas in Tashkent.
LITERATURE REVIEW
Automobile transport is an integral part of modern society and plays an important role in economic development. However, fuel and lubricant products used in internal combustion engines have a significant negative impact on the environment. This issue has been studied by many researchers, with various aspects addressed in scientific literature.
Many studies identify harmful vehicle emissions, including carbon dioxide (CO₂), nitrogen oxides (NOx), and hydrocarbons, as major sources of air pollution. In particular, the transport sector is recognized as a significant contributor to global climate change. Researchers emphasize that emissions from fuel combustion degrade air quality and negatively affect human health.
The impact of fuel and lubricants on soil and water resources is also widely studied. Leaks of oil and fuel lead to the accumulation of heavy hydrocarbons in the soil, suppressing microbial activity and reducing soil fertility. Oil products entering water bodies damage aquatic ecosystems and decrease biodiversity.
Several studies propose alternative energy sources to reduce environmental problems. Electric vehicles, hybrid cars, and hydrogen-based technologies can significantly reduce harmful emissions. Additionally, the use of biofuels is considered a promising approach.
Modern literature also emphasizes improving engine technologies to increase fuel efficiency and reduce emissions. Catalytic converters, filtration systems, and the implementation of environmental standards are recognized as effective tools to reduce vehicle environmental impact.
The role of ecological management and government policies is also highlighted. Strict environmental regulations, fuel quality standards, and regular vehicle inspections help minimize harmful effects.
In summary, literature analysis shows that the environmental impact of fuel and lubricants in vehicles is multifaceted, requiring a comprehensive approach. Technological innovations, alternative energy sources, and effective environmental policies are essential in addressing this issue.
ANALYSIS AND RESULTS
The research results indicate that one liter of used engine oil can render one million liters of clean water unfit for drinking. Laboratory analyses revealed that used oils contain highly hazardous substances such as lead (Pb), cadmium (Cd), chromium (Cr), and benzo[a]pyrene at concentrations 15–20 times higher than permissible limits.
Soil samples around automobile service centers showed hydrocarbon contamination levels of 1,500–3,000 mg/kg at a depth of 0–20 cm, 10–15 times higher than background values. Such contamination reduces soil permeability and destroys beneficial microorganisms.
Experiments with regeneration technologies demonstrated that 75–80% of waste oil can be recovered through coagulation followed by adsorption purification. Recovered oils met 90% of the quality standards of base oils. Furthermore, biodegradable (plant oil-based) lubricants were studied. They degrade by 95–98% within 28 days, whereas conventional mineral oils only degrade by 15–20%.
Data suggest that if closed-loop oil collection systems are implemented in service centers, the amount of toxic substances released into the environment could decrease by an average of 450–500 tons per year in a single large district.
DISCUSSION
The study shows that mitigating the negative impact of LMs requires not only technical measures but also organizational and legal frameworks. Currently, the decentralized collection of waste oils leads to their disposal into sewer systems or open soil.
Key measures identified include:
Strengthening technical measures: Increase the hermetic sealing of vehicle lubrication systems and use modern filtration equipment to extend oil life and reduce waste.
Transition to biodegradable oils: Mandatory use of biodegradable lubricants in ecologically sensitive areas such as agriculture and forestry.
Develop utilization infrastructure: Install special reservoirs at service centers and establish centralized logistics for collecting waste oils.
Economically, regenerating waste oils consumes 2–3 times less energy than producing new oils, providing both environmental and financial benefits. Strengthening legislation against illegal disposal and offering tax incentives for recycling companies are also recommended. This comprehensive approach ensures environmental sustainability in the transport sector.
CONCLUSION
The study concluded that:
Used LMs are highly hazardous technogenic waste, with heavy metals and hydrocarbons causing long-term ecosystem damage.
Regeneration technologies allow for the recovery of waste oils, saving raw materials and reducing environmental pollution by up to 40%.
The adoption of biodegradable lubricants should be a key direction for sustainable transport.
The recommendations developed can improve ecological management in automobile transport enterprises. Future research will focus on studying the effectiveness of nanomaterials in waste oil recycling. Overall, establishing a modern system for managing LMs is crucial for achieving sustainable development goals.
FOYDALANILGAN ADABIYOTLAR ROʻYXATI
1. Oʻzbekiston Respublikasining ‘Tabiatni muhofaza qilish toʻgʻrisida’gi Qonuni, 1992.
2. Xidoyatov B.A. Avtomobillarning texnik ekspluatatsiyasi. Toshkent: ‘Voris-nashriyot’, 2012.
3. Qodirov S.M. Avtomobil dvigatellari. Toshkent: ‘Oʻqituvchi’, 2008.
4. Semenov V.V. Ekologicheskaya bezopasnost’ avtomobil’nogo transporta. Moskva: MADI, 2015.
5. Johnson, T. L. (2019). Environmental Impact of Lubricants. Journal of Sustainable Transport, 12(4), 45-58.
6. Miller, R. & Smith, A. (2021). Recycling of Used Motor Oils: Technologies and Prospects. Green Energy Review, 8(2), 112-125.
7. Azizov A.S. Yonilgʻi va moylash materiallari. Toshkent: TAYI, 2010.
8. International Organization for Standardization. ISO 14001:2015 Environmental management systems.
9. European Commission. (2020). Waste Oils Management in the EU.
10. Gʻulomov Sh.N. Ekologiya va atrof-muhit muhofazasi. Toshkent, 2018.