scholarly journals Insulation Properties of Bricks with Waste Rubber and Plastic: A Review

2021 ◽  
Vol 1 (1) ◽  
pp. 20-27
Author(s):  
Asena KARSLIOĞLU
Keyword(s):  
Social Economic ◽  
Raw Materials ◽  
Carbon Dioxide Emission ◽  
High Energy ◽  
Sound Insulation ◽  
Waste Rubber ◽  
Environmental Damages ◽  
The World ◽  
Material Economy ◽  
High Energy Consumption

Traditional bricks are made of clay or cement. However, it has environmental deficiencies as causing high energy consumption and carbon dioxide emission. In addition, excessive and senseless use of non-renewable natural resources around the world causes social, economic and environmental damages. For these reasons, researchers have used several waste materials in brick production to contribute to sustainable development by optimizing environment-material-economy. In this study, the latest papers in the literature on the use of waste rubber (WR) and polyethylene terephthalate (PET) in brick production are presented. In particular, its thermal and sound insulation properties are examined. The literature review reveals the potential of the raw materials to be replaced by WR and PET when the manufactured bricks meet the standards.

scholarly journals Use of Steel and Polyolefin Fibres in the La Canda Tunnels: Applying MIVES for Assessing Sustainability Evaluation

2018 ◽  
Author(s):  
Marcos G. Alberti ◽  
Jaime C. Gálvez ◽  
Alejandro Enfedaque ◽  
Ana Carmona ◽  
Cristina Valverde ◽  
...  
Keyword(s):  
Value Function ◽  
Raw Materials ◽  
High Energy ◽  
Point Of View ◽  
Concrete Slabs ◽  
Function Concept ◽  
Sustainability Evaluation ◽  
Value Model ◽  
The Value Function ◽  
High Energy Consumption

Construction involves the use of significant quantities of raw materials and entails high-energy consumption. For the sake of choosing the most appropriate solution that considers environmental and sustainable concepts, tools such as the integrated value model for sustainable assessment (Modelo Integrado de Valor para una Evaluación Sostenible, MIVES) used in Spain, plays a key role in obtaining the best solution. MIVES is a multi-criteria decision-making method based on the value function concept and the seminars delivered by experts. Such tools, in order to show how they may work, require application to case studies. In this paper, two concrete slabs manufactured with differing reinforcement during the construction of the La Canda Tunnels are compared by means of MIVES. The two concrete slabs were reinforced with a conventional steel-mesh and with polyolefin fibres. The results showed that from the point of view of sustainability, the use of polyolefin fibres provided a significant advantage mainly due to the lower maintenance required.

scholarly journals Use of Steel and Polyolefin Fibres in the La Canda Tunnels: Applying MIVES for Assessing Sustainability Evaluation

2018 ◽  
Vol 10 (12) ◽  
pp. 4765 ◽  
Author(s):  
Marcos G. Alberti ◽  
Jaime C. Gálvez ◽  
Alejandro Enfedaque ◽  
Ana Carmona ◽  
Cristina Valverde ◽  
...  
Keyword(s):  
Value Function ◽  
Raw Materials ◽  
High Energy ◽  
Point Of View ◽  
Concrete Slabs ◽  
Function Concept ◽  
Sustainability Evaluation ◽  
Value Model ◽  
The Value Function ◽  
High Energy Consumption

Construction involves the use of significant quantities of raw materials and entails high-energy consumption. For the sake of choosing the most appropriate solution that considers environmental and sustainable concepts, tools such as the integrated value model for sustainable assessment (Modelo Integrado de Valor para una Evaluación Sostenible, MIVES) used in Spain, plays a key role in obtaining the best solution. MIVES is a multi-criteria decision-making method based on the value function concept and the seminars delivered by experts. Such tools, in order to show how they may work, require application to case studies. In this paper, two concrete slabs manufactured with differing reinforcements during the construction of the La Canda Tunnels are compared by means of MIVES. The two concrete slabs were reinforced with a conventional steel-mesh and with polyolefin fibres. This research was focussed on the main aspects affecting the construction. That is to say, the environmental, economic, and social factors were assessed by the method, being of special impact the issues related with maintenance of the structure. The results showed that from the point of view of sustainability, the use of polyolefin fibres provided a significant advantage, mainly due to the lower maintenance required.

Analysis of Injection Molding Machine's Energy Consumption Based on Two Different Hydraulic Circuits

2013 ◽  
Vol 365-366 ◽  
pp. 220-223
Author(s):  
Guan Nan Xi ◽  
Miao Sun ◽  
Jun Gao ◽  
Yi Dan Zhou
Keyword(s):  
Energy Consumption ◽  
Injection Molding ◽  
Hydraulic System ◽  
Servo System ◽  
High Energy ◽  
Molding Machine ◽  
The World ◽  
Hydraulic Servo ◽  
Hydraulic Servo System ◽  
High Energy Consumption

As is known to all, domestic productions of injection molding machine are huge and exported to all over the world. However, the production can only occupy the low-end markets because of its high-energy consumption and low molding precision. Besides the problems of mechanical components, the main reason led to such results lie in the its too backward hydraulic system. By comparing domestic traditional hydraulic system with foreign new hydraulic servo system, this paper focuses on the analysis of the characteristics of foreign new hydraulic servo system and verify the results by experiments based on the upper two different hydraulic system. Through this paper hopefully can it provide some practical directs to the design of domestic new hydraulic system.

Study on Eco-Clothing with Multiple Style Transformation in the Background of Cyclic Economy

2013 ◽  
Vol 694-697 ◽  
pp. 3239-3242 ◽  
Author(s):  
Wei Zhen Wang ◽  
Shu Lian Yu ◽  
Qi Zhen Wang ◽  
Yu Bing Luan ◽  
Jing Zhen Wang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Energy Consumption ◽  
Raw Materials ◽  
Apparel Industry ◽  
High Energy ◽  
Environment Friendly ◽  
Clothing Style ◽  
Consumption Situation ◽  
High Energy Consumption

In view of high energy consumption situation in the apparel industry in the background of cyclic economy, the author conducts technical experiment for clothing style change according to transformation design of clothing structure elements, and establishes the environmental protection philosophy of enabling raw materials for one garment to satisfy the function of raw materials for two or more garments. This not only maximizes the energy efficiency of clothing materials, but also optimizes life cycle of products, and accordingly promotes the energy-saving and environment-friendly eco-civilization construction in the apparel industry.

scholarly journals Rational Use of Energy Raw Materials in the Context of Sustainable Development in the Slovak Republic

2019 ◽  
Vol 105 ◽  
pp. 04003
Author(s):  
Štefan Kuzevič ◽  
Marcela Bindzárová Gergeľová ◽  
Žofia Kuzevičová
Keyword(s):  
Sustainable Development ◽  
Energy Consumption ◽  
Environmental Protection ◽  
Social Economic ◽  
Slovak Republic ◽  
Raw Materials ◽  
Institutional Development ◽  
Rational Use ◽  
The World ◽  
Reduction Of Energy Consumption

The concept of sustainable development is an important topic in the global concept of the world. It is understood as the unification of social, economic, environmental and institutional development of society. A complicated complex of relationships is formed. The contribution is devoted to selected indicators monitored in Slovakia in the framework of sustainability dealing with the issue of connection and evaluation of environmental protection and exploitation and use of energy raw materials. An important factor is also the reduction of energy consumption, given the decreasing reserves of energy raw materials in Slovakia.

scholarly journals The Intersection of Potters and Environmental Sustainability - Pottery Glaze Cases

2019 ◽  
Vol 93 ◽  
pp. 02006
Author(s):  
Ching-Lin Lu ◽  
Tai-shen Huang ◽  
Fang-Lin
Keyword(s):  
Environmental Sustainability ◽  
Carbon Dioxide Emission ◽  
High Energy ◽  
High Carbon ◽  
Ceramic Art ◽  
The Impact ◽  
The Relationship ◽  
High Carbon Dioxide ◽  
High Energy Consumption ◽  
Manufacturing Stage

Ceramics is a comprehensive expression of art and science. The ultimate goal of artistic creators is to create new presentations based on specific materials and superb techniques. Beside the bright and vivid presentation of ceramic art, we cannot ignore the process of glazing and ceramic firing, which is a process of high energy consumption and high carbon dioxide emission. We use life cycle assessment to calculate the environmental impact of the production phase. The impact at the manufacturing stage is different for different firing approach. The amount of CO2 emission in material and processing phase of design-2 is much more than that of Design-1. We need qualitatively and quantitatively explored to complement the lack of knowledge on the relationship between art creation materials and the impact on the environment.

scholarly journals Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 439 ◽  
Author(s):  
Elzbieta Kusmierek
Keyword(s):  
Industrial Wastewater ◽  
Electrode Materials ◽  
Raw Materials ◽  
Sewage Treatment ◽  
High Energy ◽  
Inorganic Pollutants ◽  
Experimental Conditions ◽  
Treatment Processes ◽  
Photoelectrocatalytic Degradation ◽  
High Energy Consumption

Industrial sources of environmental pollution generate huge amounts of industrial wastewater containing various recalcitrant organic and inorganic pollutants that are hazardous to the environment. On the other hand, industrial wastewater can be regarded as a prospective source of fresh water, energy, and valuable raw materials. Conventional sewage treatment systems are often not efficient enough for the complete degradation of pollutants and they are characterized by high energy consumption. Moreover, the chemical energy that is stored in the wastewater is wasted. A solution to these problems is an application of photoelectrocatalytic treatment methods, especially when they are coupled with energy generation. The paper presents a general overview of the semiconductor materials applied as photoelectrodes in the treatment of various pollutants. The fundamentals of photoelectrocatalytic reactions and the mechanism of pollutants treatment as well as parameters affecting the treatment process are presented. Examples of different semiconductor photoelectrodes that are applied in treatment processes are described in order to present the strengths and weaknesses of the photoelectrocatalytic treatment of industrial wastewater. This overview is an addition to the existing knowledge with a particular focus on the main experimental conditions employed in the photoelectrocatalytic degradation of various pollutants with the application of semiconductor photoelectrodes.

scholarly journals DEVELOPMENT OF CIRCULAR ECONOMY MODEL: THE CASE OF CHINA

2021 ◽  
Vol 20 (Issue Vol 20, No 2 (2021)) ◽  
pp. 280-302
Author(s):  
Demin ZHONG
Keyword(s):  
Economic Development ◽  
Circular Economy ◽  
Economic Model ◽  
High Energy ◽  
Pilot Projects ◽  
Economy Model ◽  
The Public ◽  
Chinese Model ◽  
The World ◽  
High Energy Consumption

In today’s world, resource shortages and environmental problems have gradually become insurmountable obstacles to the economic development of all countries in the world, which is also particularly true for China. The traditional economic model of high energy consumption and high emissions can no longer meet the needs of current economic development. Therefore, the strong vitality of the economic model is particularly important. The author has determined the significance of circular economy to sustainable development of China. The evolution of China’s circular economy has been analysed, while the strengths and weakness of the Chinese model have been highlighted. The paper substantiates directions for future development of circular economy in China in the context of innovations, regulatory support, recycling, pilot projects of «waste-less city», and partnerships between the authorities, entrepreneurs and the public.

MANUFACTURING GASEOUS PRODUCTS BY PYROLYSIS MICROALGAE BIOMASS

2019 ◽  
pp. 23-34
Author(s):  
N. I. Chernova ◽  
S. V. Kiseleva ◽  
O. M. Larina ◽  
G. A. Sytchev
Keyword(s):  
Raw Materials ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Initial Mass ◽  
Solid Residue ◽  
Algae Biomass ◽  
Gaseous Products ◽  
Microalgae Biomass ◽  
Pyrolysis Liquid ◽  
Pyrolysis Gases

Algae biomass is considered as an alternative raw material for the production of biofuels. The search for new types of raw materials, including high-energy types of microalgae, remains relevant, since the share of motor fuels in the structure of the global fuel and energy balance remains consistently high (about 35%), and the price of oil is characterized by high volatility. The authors have considered the advantages of microalgae as sources of raw materials for fuel production. Biochemical and thermochemical conversion are proposed as technologies for their processing. This paper presents the results of the study of the pyrolysis of the biomass of clonal culture of blue-green microalgae / cyanobacteriumArthrospira platensis rsemsu 1/02-Pfrom the collection of the Research Laboratory of Renewable Energy Sources of the Lomonosov Moscow State University. An experiment to study the process of pyrolysis of microalgae biomass was carried out at the experimental facility of the Institute of High Temperatures RAS in pure nitrogen grade 6.0 to create an oxygen-free environment with a linear heating rate of 10 ºС / min from room temperature to 1000 ºС. The whole process of pyrolysis proceeded in the field of endothermy. The specific amounts of solid residue, pyrolysis liquid and gaseous products were experimentally determined. As a result of the pyrolysis of microalgae biomass weighing 15 g, the following products were obtained: 1) coal has the mass of the solid residue is 2.68 g, or 17.7% of the initial mass of the microalgae (while 9.3% of the initial mass of the microalgae remained in the reactor); 2) pyrolysis liquid – weight 3.3 g, or 21.9% of the initial weight; 3) non-condensable pyrolysis gases – weight 1.15 l. The specific volumetric gas yield (the amount of gas released from 1 kg of the starting material) was 0.076 Nm3/ kg. The analysis of the composition and specific volume yield of non-condensable pyrolysis gases formed in the process of pyrolysis, depending on temperature. It is shown that with increasing temperature, the proportion of highcalorie components of the gas mixture (hydrogen, methane and carbon monoxide) increases. The calorific value of the mixture of these gases has been estimated.

PERSPECTIVE DEVELOPMENT OF WORLD PRODUCTION OF FEEDS FOR AQUACULTURE: ALTERNATIVE SOURCES OF RAW MATERIALS

2017 ◽  
pp. 67-78
Author(s):  
Lina Yurievna Lagutkina
Keyword(s):  
Raw Materials ◽  
Limiting Factors ◽  
Current Status ◽  
Feed Production ◽  
The World ◽  
Market Trends ◽  
Alternative Sources ◽  
World Industry ◽  
First Time ◽  
A Current

The author of the article discloses the prospects of development of the world feed production for aquaculture based on the analysis of key innovative technological and market trends. The author specifies that shortage, high cost, low ecological compatibility of traditional raw materials - fish flour - are among major limiting factors in the development of production of feeds for aquaculture. This fact, in turn, limits sustainable development of aquaculture both in Russia, and in the world in general. The article presents the overview of a current status of the world industry of feed production in aquaculture, where the regional situation is studied, as well. For the first time, there is given the outlook of innovative technologies in feed production based on the alternative sources of protein (on the example of projects of leading aquabiotechnological companies) which will determine industry’s objectives for the mid-term perspective.

Sign in / Sign up

Export Citation Format

Share Document