Yunzile Dzhelil - Academia.edu (original) (raw)

Papers by Yunzile Dzhelil

DergiPark (Istanbul University), 2018

Trans Motauto World, 2017

The energy crisis and environmental contamination are two of the main problems of the 21st centur... more The energy crisis and environmental contamination are two of the main problems of the 21st century. Atmospheric contamination from transport is well-studied case of environmental impact and is associated with significant health consequences. The biofuels use is able to reduce both pollution emitted by transport (CO 2 and other damaging substances into the atmosphere, contributing to global warming) and the reduction of energy dependence on fossil fuels (gasoline, diesel, etc.). European Union requires their use to reach-10% by 2020. Object of our study is bioethanol, which has great potential to replace gasoline. It was discussed the environmental technique for analyzing and managing the production of bioethanol, aiming to explore all stages of the production chain. It includes a selection of feedstock, site of its cultivation and transport, area for the construction of biorefinery, technology for production and distribution.

Acta infologica, May 31, 2022

Applied Researches in Technics, Technologies and Education, 2017

The society today is facing important decisions on ways to reduce greenhouse gas emissions that r... more The society today is facing important decisions on ways to reduce greenhouse gas emissions that result mostly of the transport sector and the operation of thermal-energy systems. These lead to global warming and continuously reduce of the ledge and raw materials for fossil fuels. The use of renewable sources for generate energy is one approach to solving these problems. Such appropriate conclusion is the use of biofuels. They represent energy alternative to fossil fuels that lead to reduce greenhouse gas emissions. The biofuels are produced from renewable sources that lead to increase energy security. The Directive 2003/30 / EC is for the promotion of biofuels. It aims by 2020 the use of biofuels to increase to 10%. Design of optimal Biofuel Supply Chain cesures a competitive product on the market and achieve the objective of the Directive. Design of integrated biofuel Supply Chain on strategic, economic and environmental criteria leading to minimize the total cost of the chain and are seeking to have regulated environmental impacts throughout their life cycle. Depending on these criteria solve a set of optimal alternatives with corresponding strategic decisions. The presented work examines the stages of planning integrated SC strategic, economic and environmental criteria. Economic criteria determine the total annual costs. Environmental criteria determine the noxious atmospheric emissions over the entire life cycle. Integrated SC is planned for an extended time horizon.

Energies, Apr 17, 2021

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Chemical engineering transactions, Aug 1, 2018

This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would accoun... more This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would account for economic, environmental and social aspects of sustainability. A mixed integer linear programming model is proposed to design an optimal IBSC. The model uses the delivered feedstock cost, energy consumption, and GHG emissions as system performance criteria. The efficiency of proposed supply chain design model is proved on a Bulgarian case study for biofuel production as the biomass supply chain is considered. The obtained from the design results have shown that the optimal BG IBSC configuration for 2020 includes 7 bioethanol plants and 4 plants for solid waste utilization. To meet the consumption needs of biofuel by 2020, the hybrid bioethanol plants should use mostly as raw materials wheat straw and corn cobs, which are available.

DOAJ (DOAJ: Directory of Open Access Journals), Sep 1, 2022

Mathematical Modelling, 2017

This paper focuses on designing mathematical model a integrated bioethanol supply chain (IBSC) th... more This paper focuses on designing mathematical model a integrated bioethanol supply chain (IBSC) that will account for economic and environmental aspects of sustainability. A mixed integer linear programming model is proposed to design an optimal IBSC. Bioethanol production from renewable biomass has experienced increased interest in order to reduce Bulgarian dependence on imported oil and reduce carbon emissions. Concerns regarding cost efficiency and environmental problems result in significant challenges that hinder the increased bioethanol production from renewable biomass. The model considers key supply chain activities including biomass harvesting/processing and transportation. The model uses the delivered feedstock cost, energy consumption, and GHG emissions as system performance criteria. The utility of the supply chain simulation model is demonstrated by considering a biomass supply chain for a biofuel facility in Bulgarian scale. The results show that the model is a useful tool for supply chain management, including selection of the optimal bioethanol facility location, logistics design, inventory management, and information exchange.

Energies, 2021

This study proposes a multi-objective approach for the optimal design of a sustainable Integrated... more This study proposes a multi-objective approach for the optimal design of a sustainable Integrated Biodiesel/Diesel Supply Chain (IBDSC) based on first- (sunflower and rapeseed) and second-generation (waste cooking oil and animal fat) feedstocks with solid waste use. It includes mixed-integer linear programming (MILP) models of the economic, environmental and social impact of IBDSC, and respective criteria defined in terms of costs. The purpose is to obtain the optimal number, sizes and locations of bio-refineries and solid waste plants; the areas and amounts of feedstocks needed for biodiesel production; and the transportation mode. The approach is applied on a real case study in which the territory of Bulgaria with its 27 districts is considered. Optimization problems are formulated for a 5-year period using either environmental or economic criteria and the remainder are defined as constraints. The obtained results show that in the case of the economic criterion, 14% of the agricul...

Chemical Engineering Transactions, 2020

This study proposes an optimization model for strategic design of a sustainable Integrated Biodie... more This study proposes an optimization model for strategic design of a sustainable Integrated Biodiesel/diesel Supply Chain (IBSC) using 1st & 2nd generations (1G & 2G) bioresources for biodiesel production such as sunflower and rapeseed; and waste cooking oil (WCO) and animal fats. The optimization model is formulated in terms of MILP providing all aspects of the sustainability – economic, environmental and social. The model takes into account key supply chain activities such as infrastructure compatibility, the demand distribution, the size and location of biorefineries for biodiesel production and the available biomass and carbon taxes. The economic and environmental performance of IBSC is assessed by the costs for IBSC design and Green House Gas (GHG) emissions of pollutants associated with its operation. As a social criterion, the number of expected new jobs associated with IBSC design and operation has been used. The approach is implemented on a Bulgarian scale with corresponding...

In the last decade has seen a reduction in the quantities of fossil raw materials for the product... more In the last decade has seen a reduction in the quantities of fossil raw materials for the production of conventional fuels, which in turn is accompanied by deepening environmental problems. There is a tendency to increase production of biofuels and increasing quantities of waste produced. They are classified as productive (technological) and operational (for utilization of biofuels and their values). This research work focuses on creating tools for supply chains (SC), describing the optimal management of production and operational waste. Developed are tools that includes a mathematical model and its optimization for production and use of biofuels on the following criteria: production technology, spatial distribution logistics and production units and environmental pollution with waste fuel gases containing mostly of CO 2 . Building SC also aims to provide the necessary quantities of fuels for heating and transport systems as well as their optimization environmentally friendly aspect.

Chemical engineering transactions, 2018

This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would accoun... more This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would account for economic, environmental and social aspects of sustainability. A mixed integer linear programming model is proposed to design an optimal IBSC. The model uses the delivered feedstock cost, energy consumption, and GHG emissions as system performance criteria. The efficiency of proposed supply chain design model is proved on a Bulgarian case study for biofuel production as the biomass supply chain is considered. The obtained from the design results have shown that the optimal BG IBSC configuration for 2020 includes 7 bioethanol plants and 4 plants for solid waste utilization. To meet the consumption needs of biofuel by 2020, the hybrid bioethanol plants should use mostly as raw materials wheat straw and corn cobs, which are available.

The energy crisis and environmental contamination are two of the main problems of the 21st centur... more The energy crisis and environmental contamination are two of the main problems of the 21st century. Atmospheric contamination from transport is well-studied case of environmental impact and is associated with significant health consequences. The biofuels use is able to reduce both pollution emitted by transport (CO 2 and other damaging substances into the atmosphere, contributing to global warming) and the reduction of energy dependence on fossil fuels (gasoline, diesel, etc.). European Union requires their use to reach - 10% by 2020. Object of our study is bioethanol, which has great potential to replace gasoline. It was discussed the environmental technique for analyzing and managing the production of bioethanol, aiming to explore all stages of the production chain. It includes a selection of feedstock, site of its cultivation and transport, area for the construction of biorefinery, technology for production and distribution.

Springer eBooks, Dec 9, 2021

The production of dairy products is related to water and energy costs and generation of large amo... more The production of dairy products is related to water and energy costs and generation of large amounts of greenhouse gas (GHG) emissions and wastewater. This has a direct bearing on the reduction of natural resources, the negative impact on the environment as well as the rise of social concerns due to increased product costs, pollution, etc. Full sustainability of this type of systems can be achieved by optimizing all activities across the chain of raw materials, through production to customers while considering all aspects of sustainability - environmental, economic and social. The study proposes a multi-objective modelling approach for optimal design of three-echelon supply chain (SC) for production of dairy products according to different recipes where all aspects of sustainability are taken into consideration. The approach was implemented on a real case study from Bulgaria. Four mix integer nonlinear programming (MINLP) optimization models were defined without and with social imp...

Applied Researches in Technics, Technologies and Education

The society today is facing important decisions on ways to reduce greenhouse gas emissions that r... more The society today is facing important decisions on ways to reduce greenhouse gas emissions that result mostly of the transport sector and the operation of thermal-energy systems. These lead to global warming and continuously reduce of the ledge and raw materials for fossil fuels. The use of renewable sources for generate energy is one approach to solving these problems. Such appropriate conclusion is the use of biofuels. They represent energy alternative to fossil fuels that lead to reduce greenhouse gas emissions. The biofuels are produced from renewable sources that lead to increase energy security. The Directive 2003/30 / EC is for the promotion of biofuels. It aims by 2020 the use of biofuels to increase to 10%. Design of optimal Biofuel Supply Chain cesures a competitive product on the market and achieve the objective of the Directive. Design of integrated biofuel Supply Chain on strategic, economic and environmental criteria leading to minimize the total cost of the chain and are seeking to have regulated environmental impacts throughout their life cycle. Depending on these criteria solve a set of optimal alternatives with corresponding strategic decisions. The presented work examines the stages of planning integrated SC strategic, economic and environmental criteria. Economic criteria determine the total annual costs. Environmental criteria determine the noxious atmospheric emissions over the entire life cycle. Integrated SC is planned for an extended time horizon.

International Conference on Technics, Technologies and Education

In this work, a multi-parameter, multi-criteria parameter optimization of the mathematical model ... more In this work, a multi-parameter, multi-criteria parameter optimization of the mathematical model we have developed is performed. The use of reasonable parameter limits, determined through extensive statistical observations and analyses, enables the generation of optimal technological and logistical solutions for the use of biodiesel. Based on the selection of suitable oil-containing raw materials and such wastes, it allows the construction of optimum technological-logistical chains, providing the necessary amount of biodiesel in a certain territorial unit.

DergiPark (Istanbul University), 2018

Trans Motauto World, 2017

The energy crisis and environmental contamination are two of the main problems of the 21st centur... more The energy crisis and environmental contamination are two of the main problems of the 21st century. Atmospheric contamination from transport is well-studied case of environmental impact and is associated with significant health consequences. The biofuels use is able to reduce both pollution emitted by transport (CO 2 and other damaging substances into the atmosphere, contributing to global warming) and the reduction of energy dependence on fossil fuels (gasoline, diesel, etc.). European Union requires their use to reach-10% by 2020. Object of our study is bioethanol, which has great potential to replace gasoline. It was discussed the environmental technique for analyzing and managing the production of bioethanol, aiming to explore all stages of the production chain. It includes a selection of feedstock, site of its cultivation and transport, area for the construction of biorefinery, technology for production and distribution.

Acta infologica, May 31, 2022

Applied Researches in Technics, Technologies and Education, 2017

The society today is facing important decisions on ways to reduce greenhouse gas emissions that r... more The society today is facing important decisions on ways to reduce greenhouse gas emissions that result mostly of the transport sector and the operation of thermal-energy systems. These lead to global warming and continuously reduce of the ledge and raw materials for fossil fuels. The use of renewable sources for generate energy is one approach to solving these problems. Such appropriate conclusion is the use of biofuels. They represent energy alternative to fossil fuels that lead to reduce greenhouse gas emissions. The biofuels are produced from renewable sources that lead to increase energy security. The Directive 2003/30 / EC is for the promotion of biofuels. It aims by 2020 the use of biofuels to increase to 10%. Design of optimal Biofuel Supply Chain cesures a competitive product on the market and achieve the objective of the Directive. Design of integrated biofuel Supply Chain on strategic, economic and environmental criteria leading to minimize the total cost of the chain and are seeking to have regulated environmental impacts throughout their life cycle. Depending on these criteria solve a set of optimal alternatives with corresponding strategic decisions. The presented work examines the stages of planning integrated SC strategic, economic and environmental criteria. Economic criteria determine the total annual costs. Environmental criteria determine the noxious atmospheric emissions over the entire life cycle. Integrated SC is planned for an extended time horizon.

Energies, Apr 17, 2021

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Chemical engineering transactions, Aug 1, 2018

This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would accoun... more This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would account for economic, environmental and social aspects of sustainability. A mixed integer linear programming model is proposed to design an optimal IBSC. The model uses the delivered feedstock cost, energy consumption, and GHG emissions as system performance criteria. The efficiency of proposed supply chain design model is proved on a Bulgarian case study for biofuel production as the biomass supply chain is considered. The obtained from the design results have shown that the optimal BG IBSC configuration for 2020 includes 7 bioethanol plants and 4 plants for solid waste utilization. To meet the consumption needs of biofuel by 2020, the hybrid bioethanol plants should use mostly as raw materials wheat straw and corn cobs, which are available.

DOAJ (DOAJ: Directory of Open Access Journals), Sep 1, 2022

Mathematical Modelling, 2017

This paper focuses on designing mathematical model a integrated bioethanol supply chain (IBSC) th... more This paper focuses on designing mathematical model a integrated bioethanol supply chain (IBSC) that will account for economic and environmental aspects of sustainability. A mixed integer linear programming model is proposed to design an optimal IBSC. Bioethanol production from renewable biomass has experienced increased interest in order to reduce Bulgarian dependence on imported oil and reduce carbon emissions. Concerns regarding cost efficiency and environmental problems result in significant challenges that hinder the increased bioethanol production from renewable biomass. The model considers key supply chain activities including biomass harvesting/processing and transportation. The model uses the delivered feedstock cost, energy consumption, and GHG emissions as system performance criteria. The utility of the supply chain simulation model is demonstrated by considering a biomass supply chain for a biofuel facility in Bulgarian scale. The results show that the model is a useful tool for supply chain management, including selection of the optimal bioethanol facility location, logistics design, inventory management, and information exchange.

Energies, 2021

This study proposes a multi-objective approach for the optimal design of a sustainable Integrated... more This study proposes a multi-objective approach for the optimal design of a sustainable Integrated Biodiesel/Diesel Supply Chain (IBDSC) based on first- (sunflower and rapeseed) and second-generation (waste cooking oil and animal fat) feedstocks with solid waste use. It includes mixed-integer linear programming (MILP) models of the economic, environmental and social impact of IBDSC, and respective criteria defined in terms of costs. The purpose is to obtain the optimal number, sizes and locations of bio-refineries and solid waste plants; the areas and amounts of feedstocks needed for biodiesel production; and the transportation mode. The approach is applied on a real case study in which the territory of Bulgaria with its 27 districts is considered. Optimization problems are formulated for a 5-year period using either environmental or economic criteria and the remainder are defined as constraints. The obtained results show that in the case of the economic criterion, 14% of the agricul...

Chemical Engineering Transactions, 2020

This study proposes an optimization model for strategic design of a sustainable Integrated Biodie... more This study proposes an optimization model for strategic design of a sustainable Integrated Biodiesel/diesel Supply Chain (IBSC) using 1st & 2nd generations (1G & 2G) bioresources for biodiesel production such as sunflower and rapeseed; and waste cooking oil (WCO) and animal fats. The optimization model is formulated in terms of MILP providing all aspects of the sustainability – economic, environmental and social. The model takes into account key supply chain activities such as infrastructure compatibility, the demand distribution, the size and location of biorefineries for biodiesel production and the available biomass and carbon taxes. The economic and environmental performance of IBSC is assessed by the costs for IBSC design and Green House Gas (GHG) emissions of pollutants associated with its operation. As a social criterion, the number of expected new jobs associated with IBSC design and operation has been used. The approach is implemented on a Bulgarian scale with corresponding...

In the last decade has seen a reduction in the quantities of fossil raw materials for the product... more In the last decade has seen a reduction in the quantities of fossil raw materials for the production of conventional fuels, which in turn is accompanied by deepening environmental problems. There is a tendency to increase production of biofuels and increasing quantities of waste produced. They are classified as productive (technological) and operational (for utilization of biofuels and their values). This research work focuses on creating tools for supply chains (SC), describing the optimal management of production and operational waste. Developed are tools that includes a mathematical model and its optimization for production and use of biofuels on the following criteria: production technology, spatial distribution logistics and production units and environmental pollution with waste fuel gases containing mostly of CO 2 . Building SC also aims to provide the necessary quantities of fuels for heating and transport systems as well as their optimization environmentally friendly aspect.

Chemical engineering transactions, 2018

This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would accoun... more This paper focuses on design of Integrated Bioethanol Supply Chain (IBSC) model that would account for economic, environmental and social aspects of sustainability. A mixed integer linear programming model is proposed to design an optimal IBSC. The model uses the delivered feedstock cost, energy consumption, and GHG emissions as system performance criteria. The efficiency of proposed supply chain design model is proved on a Bulgarian case study for biofuel production as the biomass supply chain is considered. The obtained from the design results have shown that the optimal BG IBSC configuration for 2020 includes 7 bioethanol plants and 4 plants for solid waste utilization. To meet the consumption needs of biofuel by 2020, the hybrid bioethanol plants should use mostly as raw materials wheat straw and corn cobs, which are available.

The energy crisis and environmental contamination are two of the main problems of the 21st centur... more The energy crisis and environmental contamination are two of the main problems of the 21st century. Atmospheric contamination from transport is well-studied case of environmental impact and is associated with significant health consequences. The biofuels use is able to reduce both pollution emitted by transport (CO 2 and other damaging substances into the atmosphere, contributing to global warming) and the reduction of energy dependence on fossil fuels (gasoline, diesel, etc.). European Union requires their use to reach - 10% by 2020. Object of our study is bioethanol, which has great potential to replace gasoline. It was discussed the environmental technique for analyzing and managing the production of bioethanol, aiming to explore all stages of the production chain. It includes a selection of feedstock, site of its cultivation and transport, area for the construction of biorefinery, technology for production and distribution.

Springer eBooks, Dec 9, 2021

The production of dairy products is related to water and energy costs and generation of large amo... more The production of dairy products is related to water and energy costs and generation of large amounts of greenhouse gas (GHG) emissions and wastewater. This has a direct bearing on the reduction of natural resources, the negative impact on the environment as well as the rise of social concerns due to increased product costs, pollution, etc. Full sustainability of this type of systems can be achieved by optimizing all activities across the chain of raw materials, through production to customers while considering all aspects of sustainability - environmental, economic and social. The study proposes a multi-objective modelling approach for optimal design of three-echelon supply chain (SC) for production of dairy products according to different recipes where all aspects of sustainability are taken into consideration. The approach was implemented on a real case study from Bulgaria. Four mix integer nonlinear programming (MINLP) optimization models were defined without and with social imp...

Applied Researches in Technics, Technologies and Education

The society today is facing important decisions on ways to reduce greenhouse gas emissions that r... more The society today is facing important decisions on ways to reduce greenhouse gas emissions that result mostly of the transport sector and the operation of thermal-energy systems. These lead to global warming and continuously reduce of the ledge and raw materials for fossil fuels. The use of renewable sources for generate energy is one approach to solving these problems. Such appropriate conclusion is the use of biofuels. They represent energy alternative to fossil fuels that lead to reduce greenhouse gas emissions. The biofuels are produced from renewable sources that lead to increase energy security. The Directive 2003/30 / EC is for the promotion of biofuels. It aims by 2020 the use of biofuels to increase to 10%. Design of optimal Biofuel Supply Chain cesures a competitive product on the market and achieve the objective of the Directive. Design of integrated biofuel Supply Chain on strategic, economic and environmental criteria leading to minimize the total cost of the chain and are seeking to have regulated environmental impacts throughout their life cycle. Depending on these criteria solve a set of optimal alternatives with corresponding strategic decisions. The presented work examines the stages of planning integrated SC strategic, economic and environmental criteria. Economic criteria determine the total annual costs. Environmental criteria determine the noxious atmospheric emissions over the entire life cycle. Integrated SC is planned for an extended time horizon.

International Conference on Technics, Technologies and Education

In this work, a multi-parameter, multi-criteria parameter optimization of the mathematical model ... more In this work, a multi-parameter, multi-criteria parameter optimization of the mathematical model we have developed is performed. The use of reasonable parameter limits, determined through extensive statistical observations and analyses, enables the generation of optimal technological and logistical solutions for the use of biodiesel. Based on the selection of suitable oil-containing raw materials and such wastes, it allows the construction of optimum technological-logistical chains, providing the necessary amount of biodiesel in a certain territorial unit.