scholarly journals The Environmental Impact of Plastic Waste

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Boyu Jiang ◽  
Jiming Yu ◽  
Yihang Liu
Keyword(s):  
Evaluation Model ◽  
Environmental Safety ◽  
Multiple Regression Model ◽  
Maximum Amount ◽  
Plastic Waste ◽  
Safety Level ◽  
Global Consensus ◽  
Production Economic ◽  
The Impact ◽  
Disposable Plastic

The pollution caused by disposable plastic products is becoming more and more serious, and "plastic limit" has become a global consensus. This article mainly discusses the pollution problem from the following aspects:Integrate all relevant important indicators to establish a multiple regression model of the maximum amount of disposable plastic waste to estimate the maximum amount of disposable waste in the future without causing further damage to the environment;Establish an environmental safety level evaluation model and analyze the impact of plastic waste on environmental safety;Try to set the lowest level target that can be achieved by global waste at this stage, and conduct correlation analysis on the impact of humans, enterprises, and the environment;Select several countries based on their comprehensive strengths, conduct a comparative analysis of their plastic production, economic strength, and environment, and try to explore their responsibilities.

scholarly journals Recycling of Waste Plastic into Fine-Grained Concrete Without Strength Reduction

2021 ◽  
Vol 915 (1) ◽  
pp. 012002
Author(s):  
M Chekanovich ◽  
S Romanenko ◽  
Ya Andriievska
Keyword(s):  
Negative Impact ◽  
Concrete Strength ◽  
Environmental Safety ◽  
Plastic Waste ◽  
Point Of View ◽  
Partial Replacement ◽  
Fine Grained ◽  
Concrete Production ◽  
Research Findings ◽  
The Impact

Abstract The problem of recycling plastic waste is quite acute both in Ukraine and for most countries of the world. The use of plastic processing products can be considered an urgent problem of society from the point of view of environmental protection and environmental safety. Today, developments are underway in the field of using polymers in one of the largest sectors of production – the construction industry. In recent years, the scientific community has been actively studying the issue of using plastic waste in the manufacture of reinforced concrete structures, that is, partial replacement of the filler with plastic particles. At the same time, in the short term, sufficient resources of plastic waste will be provided, which will come in value for collection and recycling. The use of plastic in concrete production technology will not only reduce the negative impact of waste on the environment, but also develop concrete of more sustainable quality and lower cost. The aim of the study is determining the amount of plastic waste that can be utilized through introducing it into concrete mix without reducing the strength of the concrete. Here we have considered the issue of the impact of the degree of plastic grinding on concrete strength. The research findings show that the introduction of plastic in an amount up to 3.5% of the volume of concrete as a substitute for the aggregate does not reduce its compressive or flexural strength.

scholarly journals Research on plastic waste treatment

2020 ◽  
Vol 204 ◽  
pp. 01001
Author(s):  
Baolin Ye
Keyword(s):  
Risk Assessment ◽  
Waste Treatment ◽  
Environmental Safety ◽  
Plastic Waste ◽  
Assessment Model ◽  
Risk Assessment Model ◽  
Safety Level ◽  
Daily Lives ◽  
Safe Level ◽  
Environmentally Safe

Plastics are widely used in our daily lives, and our lives cannot do without plastics. This paper introduces the concepts of relative irreplaceable coefficient and absolute irreplaceable coefficient, discusses the extent to which plastic waste can be reduced to an environmentally safe level, and reversely applies a health risk assessment model to describe the environmental safety level, and compares this safety level as a warning line for the amount of plastic waste.

scholarly journals FORMATION OF CRITERIA AND INDICATORS FOR EVALUATION OF ECOLOGICAL SAFETY LEVEL OF REGIONS OF UKRAINE

2020 ◽  
pp. 40-52
Author(s):  
Svitlana LUTKOVSKA
Keyword(s):  
Methodological Approach ◽  
Information Matrix ◽  
Environmental Safety ◽  
Environmental Hazard ◽  
The State ◽  
Hazard Identification ◽  
Ecological Safety ◽  
Management Decisions ◽  
Safety Level ◽  
The Impact

This article discusses a methodological approach to the comparative assessment of the regions of the state in terms of environmental safety. A system of indicators characterizing the state of environmental safety in the regional dimension is proposed. It is proved that environmental risk assessment is considered the most promising approach to determining the degree of environmental hazard of the territory. The concept of such assessment in almost all countries of the world and international organizations is regarded as the main mechanism for the development and adoption of management decisions on environmental protection. In the analysis of the existing methodological developments it is established that the environmental hazard assessment is based on several basic approaches. The most commonly used are the indicator based on the system of selected indicators (or indicative method). It is established that the level of environmental safety is quite broad, since it requires consideration of all the components of this process: from the calculation of the level of environmental safety to the assessment of management decisions to overcome environmental risks and prevention. An integral indicator of the level of environmental safety of the regions is proposed, which is based on taking into account the degree of risk of occurrence of environmental losses. The toolkit of existing theoretical and methodological approaches to hazard identification was tested. It has been instrumentally demonstrated that the assessment of the level of environmental and natural-anthropogenic hazards is quite complex as it involves many aspects. Effective comparison of the regions of Ukraine with such a large amount of information is possible only in some socio-economic studies, because because of the variability of different indicators of the level of environmental load it is difficult to determine the impact of which is decisive. An appropriate system of indicators was developed when designing an instrumental framework for determining the level of environmental hazard. It includes indicators of socio-ecological and economic development of regions of Ukraine in dynamics, grouped by function. The system of aggregation of indicators of ecological safety of the region and information matrix of analysis of natural and anthropogenic safety of the region have been developed.

Directions of Accounting Environmental Factors for Forecasting Formation of Agroecosystems

2020 ◽  
pp. 31-35
Author(s):  
L.Z. Khalishkhova ◽  
◽  
A. Kh. Temrokova ◽  
I.R. Guchapsheva ◽  
K.A. Bogаtyreva ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Comparative Analysis ◽  
Environmental Factors ◽  
Environmental Safety ◽  
Logical Analysis ◽  
Management Decisions ◽  
The Sustainable Development ◽  
The Impact

Ensuring the sustainable development of agroecosystems requires research into the justification of the impact of environmental factors on the formation of territorial agroecosystems and identifies ways to take them into account in order to justify management decisions and ensure environmental safety. The main goal of the research within the article is to identify the most significant environmental factors in predicting the formation of agroecosystems. Provisions are devoted to the study of the laws governing the functioning of agroecosystems in order to increase their stability. The methods of comparative analysis, generalization, abstraction, logical analysis are applied. A number of provisions are formulated regarding ways to account for the influence of factors on the formation of key elements of agroecosystems.

scholarly journals Overcapacity Risk of China’s Coal Power Industry: A Comprehensive Assessment and Driving Factors

2021 ◽  
Vol 13 (3) ◽  
pp. 1426
Author(s):  
Delu Wang ◽  
Xun Xue ◽  
Yadong Wang
Keyword(s):  
Evaluation Model ◽  
Supply And Demand ◽  
Correlation Effect ◽  
Power Industry ◽  
Environmental Benefits ◽  
Risk Level ◽  
Correlation Based Feature Selection ◽  
Coal Power ◽  
And Control ◽  
The Impact

The comprehensive and accurate monitoring of coal power overcapacity is the key link and an important foundation for the prevention and control of overcapacity. The previous research fails to fully consider the impact of the industry correlation effect; making it difficult to reflect the state of overcapacity accurately. In this paper; we comprehensively consider the fundamentals; supply; demand; economic and environmental performance of the coal power industry and its upstream; downstream; competitive; and complementary industries to construct an index system for assessing coal power overcapacity risk. Besides; a new evaluation model based on a correlation-based feature selection-association rules-data envelopment analysis (CFS-ARs-DEA) integrated algorithm is proposed by using a data-driven model. The results show that from 2008 to 2017; the risk of coal power overcapacity in China presented a cyclical feature of “decline-rise-decline”, and the risk level has remained high in recent years. In addition to the impact of supply and demand; the environmental benefits and fundamentals of related industries also have a significant impact on coal power overcapacity. Therefore; it is necessary to monitor and govern coal power overcapacity from the overall perspective of the industrial network, and coordinate the advancement of environmental protection and overcapacity control.

scholarly journals The Impact of Work Characteristics on Social Distancing: Implications at the Time of COVID-19

2021 ◽  
Vol 18 (10) ◽  
pp. 5074
Author(s):  
Keisuke Kokubun ◽  
Yoshinori Yamakawa
Keyword(s):  
Information Processing ◽  
Multiple Regression ◽  
Explanatory Power ◽  
Work Conditions ◽  
Multiple Regression Model ◽  
Social Characteristics ◽  
Work Characteristics ◽  
Social Distancing ◽  
Using Data ◽  
The Impact

The coronavirus disease (COVID-19) continues to spread globally. While social distancing has attracted attention as a measure to prevent the spread of infection, some occupations find it difficult to implement. Therefore, this study aims to investigate the relationship between work characteristics and social distancing using data available on O*NET, an occupational information site. A total of eight factors were extracted by performing an exploratory factor analysis: work conditions, supervisory work, information processing, response to aggression, specialization, autonomy, interaction outside the organization, and interdependence. A multiple regression analysis showed that interdependence, response to aggression, and interaction outside the organization, which are categorized as ”social characteristics,” and information processing and specialization, which are categorized as “knowledge characteristics,” were associated with physical proximity. Furthermore, we added customer, which represents contact with the customer, and remote working, which represents a small amount of outdoor activity, to our multiple regression model, and confirmed that they increased the explanatory power of the model. This suggests that those who work under interdependence, face aggression, and engage in outside activities, and/or have frequent contact with customers, little interaction outside the organization, and little information processing will have the most difficulty in maintaining social distancing.

scholarly journals The Impact of the Coexistence of Methane Hazard and Rock-Bursts on the Safety of Works in Underground Hard Coal Mines

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 128
Author(s):  
Justyna Swolkień ◽  
Nikodem Szlązak
Keyword(s):  
Rock Burst ◽  
Methane Concentration ◽  
High Energy ◽  
Hard Coal ◽  
Coal Seams ◽  
Safety Level ◽  
Methane Drainage ◽  
Innovative Methods ◽  
Hard Coal Mining ◽  
The Impact

Several natural threats characterize hard coal mining in Poland. The coexistence of methane and rock-burst hazards lowers the safety level during exploration. The most dangerous are high-energy bumps, which might cause rock-burst. Additionally, created during exploitation, safety pillars, which protect openings, might be the reason for the formation of so-called gas traps. In this part, rock mass is usually not disturbed and methane in seams that form the safety pillars is not dangerous as long as they remain intact. Nevertheless, during a rock-burst, a sudden methane outflow can occur. Preventing the existing hazards increases mining costs, and employing inadequate measures threatens the employees’ lives and limbs. Using two longwalls as examples, the authors discuss the consequences of the two natural hazards’ coexistence. In the area of longwall H-4 in seam 409/4, a rock-burst caused a release of approximately 545,000 cubic meters of methane into the excavations, which tripled methane concentration compared to the values from the period preceding the burst. In the second longwall (IV in seam 703/1), a bump was followed by a rock-burst, which reduced the amount of air flowing through the excavation by 30 percent compared to the airflow before, and methane release rose by 60 percent. The analyses presented in this article justify that research is needed to create and implement innovative methods of methane drainage from coal seams to capture methane more effectively at the stage of mining.

scholarly journals SARS-CoV-2 pandemic-induced PPE and single-use plastic waste generation scenario

2021 ◽  
pp. 0734242X2098082
Author(s):  
Md. Sazzadul Haque ◽  
Shafkat Sharif ◽  
Aseer Masnoon ◽  
Ebne Rashid
Keyword(s):  
Plastic Waste ◽  
Personal Hygiene ◽  
Negative Effects ◽  
Effective Response ◽  
Policy Makers ◽  
Single Use ◽  
Polyethylene Bags ◽  
Policy Measures ◽  
Disposable Plastic ◽  
Do So

The SARS-CoV-2 pandemic has demonstrated both positive and negative effects on the environment. Major concerns over personal hygiene, mandated and ease in lockdown actions and slackening of some policy measures have led to a massive surge in the use of disposable personal protective equipment (PPE) and other single-use plastic items. This generated an enormous amount of plastic waste from both healthcare and household units, and will continue to do so for the foreseeable future. Apart from the healthcare workers, the general public have become accustomed to using PPE. These habits are threatening the land and marine environment with immense loads of plastic waste, due to improper disposal practices across the world, especially in developing nations. Contaminated PPE has already made its way to the oceans which will inevitably produce plastic particles alongside other pathogen-driven diseases. This study provided an estimation-based approach in quantifying the amount of contaminated plastic waste that can be expected daily from the massive usage of PPE (e.g. facemasks) because of the countrywide mandated regulations on PPE usage. The situation of Bangladesh has been analysed and projections revealed that a total of 3.4 billion pieces of single-use facemask, hand sanitizer bottles, hand gloves and disposable polyethylene bags will be produced monthly, which will give rise to 472.30 t of disposable plastic waste per day. The equations provided for the quantification of waste from used single-use plastic and PPE can be used for other countries for rough estimations. Then, the discussed recommendations will help concerned authorities and policy makers to design effective response plans. Sustainable plastic waste management for the current and post-pandemic period can be imagined and acted upon.

scholarly journals Comparative Study of a Life Cycle Assessment for Bio-Plastic Straws and Paper Straws: Malaysia’s Perspective

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1007
Author(s):  
Chun-Hung Moy ◽  
Lian-See Tan ◽  
Noor Fazliani Shoparwe ◽  
Azmi Mohd Shariff ◽  
Jully Tan
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Plastic Waste ◽  
Beverage Industry ◽  
Food And Beverage Industry ◽  
Food And Beverage ◽  
Acidification Potential ◽  
The Impact ◽  
Process Simulator ◽  
Insight Into

Plastics are used for various applications, including in the food and beverage industry, for the manufacturing of plastic utensils and straws. The higher utilization of plastic straws has indirectly resulted in the significant disposal of plastic waste, which has become a serious environmental issue. Alternatively, bio-plastic and paper straws have been introduced to reduce plastic waste. However, limited studies are available on the environmental assessment of drinking straws. Life cycle assessment (LCA) studies for bio-plastic and paper straws have not been comprehensively performed previously. Therefore, the impact of both bio-plastic and paper straws on the environment are quantified and compared in this study. Parameters, such as the global warming potential (GWP), acidification potential (AP) and eutrophication potential (EP), were evaluated. The input–output data of the bio-plastic and paper straws processes from a gate-to-grave analysis were obtained from the literature and generated using the SuperPro Designer V9 process simulator. The results show that bio-plastic straws, which are also known as polylactic acid (PLA) straws, had reduced environmental impacts compared to paper straws. The outcomes of this work provide an insight into the application of bio-plastic and paper straws in effectively reducing the impact on the environment and in promoting sustainability, especially from the perspective of Malaysia.

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