scholarly journals Towards Circular Economy Solutions for The Management of Rice Processing Residues to Bioenergy via Gasification

2019 ◽  
Vol 11 (22) ◽  
pp. 6433 ◽  
Author(s):  
Vaskalis ◽  
Skoulou ◽  
Stavropoulos ◽  
Zabaniotou
Keyword(s):  
Waste Management ◽  
Value Chain ◽  
Circular Economy ◽  
Economic Assessment ◽  
Stoichiometric Ratio ◽  
Industrial Symbiosis ◽  
Rice Husks ◽  
Experimental Proof ◽  
Custom Made ◽  
Rice Processing

A techno-economic assessment of two circular economy scenarios related to fluidized bed gasification-based systems for combined heat and power (CHP) generation, fueled with rice processing wastes, was conducted. In the first scenario, a gasification unit with 42,700 t/y rice husks capacity provided a waste management industrial symbiosis solution for five small rice-processing companies (SMEs), located at the same area. In the second scenario, a unit of 18,300 t/y rice husks capacity provided a waste management solution to only one rice processing company at the place of waste generation, as a custom-made solution. The first scenario of a cooperative industrial symbiosis approach is the most economically viable, with an annual revenue of 168 €/(t*y) of treated rice husks, a very good payout time (POT = 1.05), and return in investment (ROI = 0.72). The techno-economic assessment was based on experiments performed at a laboratory-scale gasification rig, and on technological configurations of the SMARt-CHP system, a decentralized bioenergy generation system developed at Aristotle University, Greece. The experimental proof of concept of rice husks gasification was studied at a temperature range of 700 to 900 °C, under an under-stoichiometric ratio of O2/N2 (10/90 v/v) as the gasification agent. Producer gas’s Lower Heating Value (LHV) maximized at 800 °C (10.9 MJ/Nm3), while the char’s Brunauer Emmet Teller (BET) surface reached a max of 146 m2/g at 900 °C. Recommendations were provided for a pretreatment of rice husks in order to minimize de-fluidization problems of the gasification system due to Si-rich ash. With the application of this model, simultaneous utilization and processing of waste flows from various rice value chain can be achieved towards improving environmental performance of the companies and producing energy and fertilizer by using waste as a fuel and resource with value.

scholarly journals Modelling Sustainable Industrial Symbiosis

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1172
Author(s):  
Hafiz Haq ◽  
Petri Välisuo ◽  
Seppo Niemi
Keyword(s):  
Life Cycle ◽  
Waste Management ◽  
Environmental Performance ◽  
Life Cycle Cost ◽  
Economic Assessment ◽  
Environmental Benefits ◽  
Industrial Symbiosis ◽  
Comprehensive Model ◽  
Network Connections

Industrial symbiosis networks conventionally provide economic and environmental benefits to participating industries. However, most studies have failed to quantify waste management solutions and identify network connections in addition to methodological variation of assessments. This study provides a comprehensive model to conduct sustainable study of industrial symbiosis, which includes identification of network connections, life cycle assessment of materials, economic assessment, and environmental performance using standard guidelines from the literature. Additionally, a case study of industrial symbiosis network from Sodankylä region of Finland is implemented. Results projected an estimated life cycle cost of €115.20 million. The symbiotic environment would save €6.42 million in waste management cost to the business participants in addition to the projected environmental impact of 0.95 million tonne of CO2, 339.80 tonne of CH4, and 18.20 tonne of N2O. The potential of further cost saving with presented optimal assessment in the current architecture is forecast at €0.63 million every year.

Digitalisation and intelligent robotics in value chain of circular economy oriented waste management – A review

2019 ◽  
Vol 95 ◽  
pp. 476-492 ◽  
Author(s):  
R. Sarc ◽  
A. Curtis ◽  
L. Kandlbauer ◽  
K. Khodier ◽  
K.E. Lorber ◽  
...  
Keyword(s):  
Waste Management ◽  
Value Chain ◽  
Circular Economy ◽  
Intelligent Robotics

scholarly journals Challenges in the management of data on extractive waste—the Polish case

2019 ◽  
Vol 33 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Joanna Kulczycka ◽  
Ewa Dziobek ◽  
Anita Szmiłyk
Keyword(s):  
Waste Management ◽  
Circular Economy ◽  
Extractive Industries ◽  
Industrial Symbiosis ◽  
Individual Group ◽  
Mining Company ◽  
The Public ◽  
Central Statistical ◽  
Central Statistical Office ◽  
Detailed Assessment

Abstract The study analysed the waste statistics of European Union (EU) countries with particular emphasis on waste from extractive industries. Assessment of the data available at EU level (Eurostat) and presented by individual countries showed that even with a number of EU regulations and guidance, there are no complete, consistent and integrated reports that monitor the implementation of measures and support for waste management. Based on the example of Poland, a detailed analysis of the environmental reports from each mining company (to the regional database) and a grouping of the data according to EU waste codes were conducted for the 2017 data. The results were then compared with the data provided by the Central Statistical Office. It has been shown that there is a need for the reporting to be improved in order to avoid inconsistencies and to be able to undertake a detailed assessment of the approach and activities carried out with regard to their impact on the environment and society. Based on the example of Poland, the collection of data based on the waste code at the level of each mining company can be recommended, and this should be made available to the public by individual group of wastes on one platform (e.g. Eurostat) which would be helpful for proper waste management and the creation of industrial symbiosis and a quicker transformation towards a circular economy.

scholarly journals Subsurface waste management in the conditions of circular economy

2020 ◽  
Vol 177 ◽  
pp. 05007
Author(s):  
Lyudmila Anatolyevna Mochalova ◽  
Olga Gennadievna Sokolova
Keyword(s):  
Waste Management ◽  
Circular Economy ◽  
Business Models ◽  
Raw Materials ◽  
Mineral Resources ◽  
Waste Minimization ◽  
Industrial Symbiosis ◽  
Material Flows ◽  
Integrated Development ◽  
Mining Enterprise

The article is devoted to the consideration of modern approaches to the subsurface waste management and the integrated development of the mineral resources base, the development of which requires consideration of the environmental, industrial, technological and economic aspects of this issue. The authors of the article note that it is advisable to use such modern management technologies as circular business models, 3R and 5R concepts, as well as logistics methods of waste management for the waste management of enterprises of the mineral resources sector. These technologies make it possible to form an eco-industrial symbiosis, the main object of which is a mining enterprise connected with other symbiosis objects by material flows. The authors are convinced that the successful functioning of eco-industrial symbiosis will lead to the maximum use of subsurface waste, minimization of their storage and disposal volumes, and, ultimately, will contribute to the integrated use of mineral raw materials.

scholarly journals The Sustainability of Waste Management Models in Circular Economies

2021 ◽  
Vol 13 (13) ◽  
pp. 7105
Author(s):  
Carmen Avilés-Palacios ◽  
Ana Rodríguez-Olalla
Keyword(s):  
Sustainable Development ◽  
Waste Management ◽  
Value Chain ◽  
Environmental Sustainability ◽  
Circular Economy ◽  
The Other ◽  
Raw Material ◽  
Linear Processes ◽  
Sustainable Solutions ◽  
Crucial Difference

The circular economy (CE) is considered a key economic model to meet the challenge of sustainable development. Strenous efforts are focused on the transformation of waste into resources that can be reintroduced into the economic system through proper management. In this way, the linear and waste-producing value chain problems are solved, making them circular, and more sustainable solutions are proposed in those chains already benefiting from circular processes, so that waste generation and waste are reduced on the one hand, and on the other, the non-efficient consumption of resources decreases. In the face of this current tide, there is another option that proposes a certain nuance, based on the premise that, although circular systems promote sustainability, it does not mean that they are in themselves sustainable, given that, in the first place, the effects of CE on sustainable development are not fully known and, on the other hand, the CE model includes the flow of materials, with only scant consideration of the flow of non-material resources (water, soil and energy). This paper aims to contrast both currents from an empirical viewpoint. To achieve this, a sustainability analysis of the circular waste management systems measured through a sustainability indicator, the carbon footprint (CF), as a main sustainable indicator in climate change action, is carried out. A crucial difference between circular models that promote waste management and those that do not is found in the collective systems of extended producer responsibility (or CPR). One of the most efficient recycling processes in Europe, waste tire management, has been chosen. Thus, the aim is to verify the sense of including environmental sustainability indicators, as CF, in the process of these systems. A sustainability management model (SBA) applies to End-of Life tire collection systems (ELT). This model is based on the accumulation of environmental impacts through the activities that generate them. To be transparent, this study requires a publicly recognized CF, so the study is focused on SIGNUS, the main Spanish waste tires CPR. The results achieved allow us to conclude that CF is much lower using CPR than non-linear processes. Despite the role that CPR have in the management and use of waste as secondary raw material, it is a priority to focus efforts on their redesign in order to reduce waste. In terms of circular economy, all actions are necessary in order to achieve system efficiencies, even when externalities occur in this process.

scholarly journals Industrial symbiosis in circular economy

2021 ◽  
Vol 2021 (4) ◽  
pp. 44-50
Author(s):  
Natalya Yur'evna Titova
Keyword(s):  
Value Chain ◽  
Circular Economy ◽  
Negative Impact ◽  
Industrial Symbiosis ◽  
Low Carbon ◽  
Industrial Enterprises ◽  
Use Of Resources ◽  
Negative Effect ◽  
Symbiosis Model ◽  
Industrial Value Chain

In Russian Federation the questions of transformation of the current linear model of economy into the low-carbon model having the least negative impact on the environment are very urgent. Among the ways to realize the required transition scientists recognize the introduction of the concept of circular economy, as well as the organization of a system of interaction between industrial enterprises on the basis of the principles of industrial symbiosis. The scope of application of the industrial symbiosis model in the circular economy remains insufficiently studied in the scientific environment, which actualizes its solution. There has been defined the hierarchy of conceptual and categorical apparatus of industrial symbiosis in the circular economy. Integration of the companies on the basis of using the model of industrial symbiosis takes place due to the combination of environmental and economic interests of its participants by forming the industrial value chain. Symbiotic links involve the rational use of resources, which leads to the less intensive production processes and, consequently, to the reduced carbon emissions. Obtaining a synergistic effect is an incentive that encourages industrial structures to form symbiotic links. There has been stated the growth of transaction costs, which can be designated as a negative effect of the industrial symbiosis model. The directions for reducing this influence are proposed: improving the pricing model for industrial waste, taking into account territorial proximity and the need for industry associations and unions to participate in finding partners. The concept of industrial symbiosis is considered and clarified, which includes the principles, purpose and effects to characterize this term. The conclusion about the role of industrial symbiosis in the circular economy has been made.

scholarly journals Advances on the Implementation of Circular Economy Techniques in Rural Areas in Colombia under a Sustainable Development Framework

2021 ◽  
Vol 13 (7) ◽  
pp. 3816
Author(s):  
Javier Rodrigo-Ilarri ◽  
Camilo-A. Vargas-Terranova ◽  
María-Elena Rodrigo-Clavero ◽  
Paula-A. Bustos-Castro
Keyword(s):  
Sustainable Development ◽  
Waste Management ◽  
Circular Economy ◽  
Rural Areas ◽  
Development Framework ◽  
Starting Point ◽  
Management Plans ◽  
Good Starting Point ◽  
Depressed Regions ◽  
First Time

For the first time in the scientific literature, this research shows an analysis of the implementation of circular economy techniques under sustainable development framework in six municipalities with a depressed economy in Colombia. The analysis is based on solid waste data production at a local scale, the valuation of the waste for subsequent recycling, and the identification and quantification of the variables associated with the treatment and final disposal of waste, in accordance with the Colombian regulatory framework. Waste generation data are obtained considering three different scenarios, in which a comparison between the simulated values and those established in the management plans are compared. Important differences have been identified between the waste management programs of each municipality, specifically regarding the components of waste collection, transportation and disposal, participation of environmental reclaimers, and potential use of materials. These differences are fundamentally associated with the different administrative processes considered for each individual municipality. This research is a good starting point for the development of waste management models based on circular economy techniques, through the subsequent implementation of an office tool in depressed regions such as those studied.

scholarly journals Making Resilient Decisions for Sustainable Circularity of Fashion

2021 ◽  
Author(s):  
Celinda Palm ◽  
Sarah E. Cornell ◽  
Tiina Häyhä
Keyword(s):  
Value Chain ◽  
Circular Economy ◽  
Ecological Impacts ◽  
Ecological System ◽  
Fashion Industry ◽  
State Response ◽  
Social Ecological ◽  
Industry Value Chain ◽  
The Many ◽  
Sustainability Challenges

AbstractThe fashion and textiles industry, and policymakers at all levels, are showing an increased interest in the concept of circular economy as a way to decrease business risks and negative environmental impacts. However, focus is placed mainly on the material ‘stuff’ of textile fashion and its biophysical harms. The current material focus has several shortcomings, because fashion is a social-ecological system and cannot be understood merely by addressing its environmental dimensions. In this paper, we rethink the fashion system from a critical social-ecological perspective. The driver-state-response framework shows social drivers and ecological impacts as an adaptive social-ecological system, exposing how these interacting aspects need to be addressed for sustainable and resilient implementation of circular economy. We show how current responses to global sustainability challenges have so far fallen short. Our overall aim is to expand possibilities for reframing responses that better reflect the complex links between the global fashion system, culture and creativity and the dynamics of the living planet. We argue that reducing planetary pressure from the global fashion and textiles industry requires greater recognition of the system’s social drivers with more emphasis on the many cross-scale links between social and ecological dimensions. Resilient decisions aiming for sustainable circularity of the fashion industry must therefore pay attention to social activities beyond the industry value chain, not just material flows within it.

scholarly journals How Far Away Are World Economies from Circularity: Assessing the Capacity of Circular Economy Policy Packages in the Operation of Raw Materials and Industrial Wastes

2021 ◽  
Vol 13 (8) ◽  
pp. 4394
Author(s):  
Margarita Ignatyeva ◽  
Vera Yurak ◽  
Alexey Dushin ◽  
Vladimir Strovsky ◽  
Sergey Zavyalov ◽  
...  
Keyword(s):  
The Netherlands ◽  
Waste Management ◽  
South Korea ◽  
Circular Economy ◽  
Raw Materials ◽  
Industrial Wastes ◽  
New Guidelines ◽  
The 1960S ◽  
Degree Level ◽  
The Eu

Nowadays, circular economy (CE) is on the agenda, however, this concept of closed supply chains originated in the 1960s. The current growing quantity of studies in this area accounts for different discourses except the holistic one, which mixes both approaches—contextual and operating (contextual approach utilizes the thorough examination of the CE theory, stricture of the policy, etc.; the operating one uses any kind of statistical data)—to assess the capacity of circular economy regulatory policy packages (CERPP) in operating raw materials and industrial wastes. This article demonstrates new guidelines for assessing the degree level of capacity (DLC) of CERPPs in the operation of raw materials and industrial wastes by utilizing the apparatus of the fuzzy set theory. It scrupulously surveys current CERPPs in three regions: the EU overall, Finland and Russia; and assesses for eight regions—the EU overall, Finland, Russia, China, Greece, France, the Netherlands and South Korea—the DLC of CERPPs in operating raw materials and industrial wastes. The results show that EU is the best in CE policy and its CERPP is 3R. The following are South Korea and China with the same type of CERPP. Finland, France and the Netherlands have worse results than EU with the type of CERPP called “integrated waste management” because of the absence of a waste hierarchy (reduce, recover, recycle). Russia closes the list with the type of CERPP “basic waste management”.

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