Papers by Keyword: Environmental Pollution

Abstract: The increasing concentrations of heavy metals (HM) in the water bodies, primarily caused by the rapid use of fertilizers in farming and increasing industrialization, pose a serious threat to the deteriorating earth’s environment and human health. This pollution is dangerous to water-dwelling life forms and is also of concern because it is believed to be a carcinogen. To overcome these challenges, constant water quality analysis must be done. Out of all the remediation methods, the adsorption-based techniques are considered one of the most suitable means of addressing the problem of heavy metal toxicity in wastewater. The latest trends in the application of Functionalized Magnetic Nanomaterials (MNPs) attached to nanocomposites, including carbon-based materials like carbon nanotubes (CNTs), Graphene Oxide (GOx), and Graphene Quantum Dots (GQDs) and inorganic supports like Zeolites (ZLs) and Metal-Organic Frameworks (MOFs), demonstrate high efficiency in the extraction of heavy metals (HM). These nanocomposites possess a higher rate of active surface area and can adsorb properties, which make them reusable over multiple cycles of treatment in various forms of wastewater. This review will discuss the preparation method of engineering MNPs on CNTS and GOx and analyze modern materials' role in removing heavy metals. Besides, due to the observed effects of the substances on the biota, the study will highlight the need to conduct more research on the ecotoxicological effects of the materials and design suitable methods that can guarantee the effectiveness of the materials in promoting a sustainable environment.

Abstract: This paper delves into a comparative review of the actions of the Australian fashion industry in response to climate change. The focus of this review centres around major benchmark events in the Australian landscape of policies and regulations enactment, which shape the consumption of fashion in the country. This paper compares the interconnectedness or disconnected discourse of the fashion and textile industry’s trends, in response to climate change, within the Australian context. Climate change is set to catastrophically impact global food supplies and endanger human health by inducing heat-related mortality, cardiovascular diseases and mental health issues. In the next decade, it is expected to force millions of people into extreme poverty. The severity of climate change awareness has transpired the sustainability concept into a prime prerequisite for global business models. Fashion and textile businesses are quickly adapting to lower their environmental impact. However, this industry is still considered to be the second-most polluting sector globally. It contributes to greenhouse gas emissions via raw material extraction, production, and distribution processes. In addition, synthetic textiles impact the marine biosphere by releasing microplastic fragments. At the end of the product life cycle, most textiles are discarded in irreversible landfills. Australia is the second biggest consumer of textile, clothing and footwear products. Therefore, it is critical to compare the impact of the Australian fashion and textile industry and its response to the climate crisis.

Abstract: Natural clays, engineered Ag-nanoparticles (NP), TiO₂-NP, and exhausted coffee grounds were used to synthesize a nanocomposite 7NC using a Vertisol soil through a single-step by thermal method, to build a nanomaterial to degrade or filtrate pollutants from soils, water or air. The surface characteristics and the porosity of the composite were studied through nitrogen gas adsorption at liquid nitrogen temperature and application of the Brunauer–Emmett–Teller (BET) equation and the results indicated that the microporous composites ranged a surface area of 17.36 m² g^-1. X-ray diffraction showed crystalline structure and crystalline phase of the nanocomposites. HR-TEM-STEM results demonstrated that TiO₂-NP surrounded Ag-NP, and both were impregnated on natural soil nanoparticles. Oxidation states of the Ag-NP and TiO₂-NP were analyzed by X-ray photoelectron spectroscopy (XPS) The energy gap of nanocomposite 7NC was determined using the Kubelka-Munck model from Ultraviolet–visible diffuse reflectance (UV–Visible DRS) spectra. The photocatalytic activity of these nanocomposites was evaluated, and the results indicated that nanocomposite with Vertisol-soil-NP (7NC) degraded the harmful organic compound methylene blue (MB) while the antimicrobial activity and resistance against Escherichia coli and Staphylococcus aureus and the zone of inhibition (ZOI) also were analyzed. The nanocomposites Ag-NP/TiO₂-NP/natural-soil-NP/exhausted coffee-ground showed its for the development of an efficient material for environmental remediation with photocatalytic and antimicrobial activity.

Abstract: Globally, the concrete industry consumes large quantities of natural resources, which are becoming insufficient to meet the increasing demands. Cement and aggregates are major constituents of concrete. Utilisation of waste materials in concrete instead of raw materials reduces environmental pollution. Ground-granulated blast-furnace slag (GGBS) is a by-product of steel industry. It has cementatious property. Recycled aggregates are obtained from demolishing waste. By using recycled concrete aggregate and GGBS in concrete we can reduce environmental problem to some extent. This experimental study evaluate the effective utilisation of GGBS and recycled aggregate in concrete. In this study GGBS is used as partial replacement for cement and recycled aggregate as partial replacement for coarse aggregate.

Abstract: The automotive industry is an important pillar industry of the national economy and plays an important role in the national economic and social development. With China's sustained and rapid economic development and urbanization accelerate, the future demand for a longer period of time the car will maintain the growth momentum, the resulting that energy shortage and environmental pollution problems will become more prominent. The emergence of new energy vehicles, can effectively alleviate the energy and environmental pressures, and to promote the sustainable development of the automobile industry, how to solve large-scale electric vehicle charging is a key factor, This paper analyzed the environmental impact from the vehicle, the number of charging stations and the distribution of key technical aspects, drawn to promote new energy vehicle technology innovation and rapid development, to maintain stable economic growth and improve people's living standards have an important strategic meaningful conclusions.

Abstract: In the foundry industry, the main solid waste is the foundry waste sand, casting cupola dust and slag, which causes environmental pollution and becomes a bottleneck restricting the development of the foundry industry. The main components of the foundry waste sand and slag generated by casting are siliceous and calcareous granular materials, which meet the needs of engineering construction materials, they have a broad application prospect. In this paper, the investigation and analysis of the foundry waste sand and slag have been carried on about the research and application in the engineering construction, which provide reference and basis for the application of foundry waste sand and slag in the engineering.

Abstract: The creative city takes the lead either in economy or culture. In recent years, China continuously proposes the test point for creative city and expends the exchange between economic development and culture. However, the environmental pollution has always been the major problem with economic development. There are numerous researches and explorations on the environmental pollution, left behind by creative city. The paper uses analytic network process (ANP) makes a comprehensive assessment on the environmental pollution of the creative cities of Shenzhen, Guangzhou and Nanjing. Firstly, summarize the factors that affect environmental pollution, using analytic network process; secondly, start evaluation from atmosphere pollution, water contamination, soil heavy metal pollution, which make up the environmental pollution system; establish digital format for environment indicator system, create hypermatrix model and work out the corresponded conclusion.

Abstract: The long term dynamic relation between economic growth and environment pollution is analyzed by using co-integration analysis and granger causality test, generalized impulse response function and variance decomposition method in Jiangsu Province based on the VAR model, and the related data of Environment pollution and GDP indices are from 1982 to 2012. The results indicate that economic growth to environmental pollution is positive and persistent, but that of environmental policy is negative and weak. This conclusion can provide a great reference value for promoting sustainable economic development and formulating relevant environmental policy for Jiangsu Province. the existence of Kuznets inverted U shaped curve for economic growth and environmental pollution depends on the data from different regions and different indexes measuring the levels of environmental pollution.

Abstract: Based on detailed investigation and research of rural life energy consumption situation in Beijing, conclusion is made that the current coal-dominated energy consumption pattern has caused environmental pollution and even health hazards. At the same time, low energy efficiency also leads to energy waste. To optimize rural energy consumption structure and improve regional air quality, measures of energy utilization according to local conditions and a balanced energy mix should be taken. Thus realize reduction and substitution of coal.

Abstract: The paper evaluates the relationship between economic growth and environmental pollution of Anhui province using the data from 1990 to 2012. The indicators for the evaluation included emission of industrial waste water (EIWW), emission of industrial waste gas (EIWG), emission of industrial solid waste (EISW) and GDP per capita (GDPPC). The results show that the relationship between economic growth and environmental pollution of Anhui province is different from Environmental Kuznets curve. There is a U-shaped plus inverted U-shaped curve between EIWW and GDPPC. EIWG and EISW keep increasing monotonically. The turning points of EIWG and EISW both apparently less than that of developed countries. Our study then predicts that EIWG and EISW begin to decrease when the GDPPC reaches 3421Yuan and 5189Yuan (The price of 1978) respectively. Our study reveals the importance of increasing environmental protection expense and strengthening the construction of environmental policy.