You're using an outdated browser. Please upgrade to a modern browser for the best experience.
Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort by:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Topic Review
Technology, Policy, and Market Trends of NGV Batteries
In recent years, with the rapid spread of next-generation vehicles (NGVs), China, Japan, and South Korea (CJK) have been leading the development of vehicle batteries. For NGV batteries, higher energy density, higher safety, and longer lifespan are important issues in the future. Along with the construction of recycling and reuse systems, it is expected that the vehicle battery market will further expand in countries around the world in respect to their own characteristics of specific development strategies and policy trends.
  • 2.2K
  • 19 Oct 2022
Topic Review
Photocathode Materials
Photoelectrochemical water splitting is a promising approach to sustainable hydrogen production with no carbon emissions. Hydrogen being a future fuel to coming human generations is of utmost importance. The photocathodes in a photoelectrochemical (PEC) water-splitting cell are essential for the direct evolution of hydrogen. Among the known photocathodes, Cu-based p-type semiconducting materials are the most promising photo-absorber materials owing to their low-cost, low toxicity, natural abundance, suitable band-gaps, and favorable band edges for reduction. 
  • 2.2K
  • 08 Nov 2022
Topic Review
Zero Liquid Discharge System for the Tannery Industry
The tannery industry is characterized by the consumption of a large quantity of water, around 30–40 m3 for processing 1000 kg of hide or skin. This amount becomes wastewater, containing about 300 kg of different chemicals, mainly refractory organic compounds, with high chemical oxygen demand (COD), total dissolved salts (TDS), chromium, and evolution of toxic gases, such as ammonia and sulfides, etc. The remaining tanning chemicals are released as effluent having high resistance against biological degradation, becoming a serious environmental issue. The Zero Liquid Discharge (ZLD) system serves to ensure zero water emission, as well as treatment facilities by recycling, recovery, and reuse of the treated wastewater using advanced cleanup technology. The international scenario shows the implementation of ZLD thanks to pressure from regulatory agencies. The ZLD system consists of a pre-treatment system with conventional physicochemical treatment, tertiary treatment, softening of the treated effluent, reverse osmosis (RO) treatment for desalination, and thermal evaporation of the saline reject from RO to separate the salts. By adopting this system, water consumption is reduced. Moreover, ZLD also becomes effective in disaster mitigation in areas where the tannery industry is a strong economic actor. 
  • 2.2K
  • 27 Jun 2022
Topic Review
Organic Amendments for Mitigation of Plants' Salinity Stress
To reduce excess soil salinity, plant scientists are employing techniques such as sub-soiling, mixing sand, seed bed preparation, and salt scraping, as well as modern agronomic practices, hydrophilic polymer, gypsum, sulfur acids, green manuring, humic substance, farm yard manures, irrigation system, and salt-tolerant crops. Different organic amendments such as the application of vermi-compost (VC), vermi-wash (VW), biochar (BC), plant growth promoting rhizobacteria (PGPR), and bio-fertilizers (BF) are being used widely to ameliorate the negative consequences of soil salinity. The organic amendments mitigate salt stress via a wide range of mechanisms, including the regulation of ionic homeostasis, antioxidant enzyme activities, and the reduction of oxidative damage. Several studies described that PGPR and BC relieved the negative effects of salinity by increasing the photosynthetic rate, antioxidant enzyme functions, secondary metabolites accumulation, and decreasing ROS in plants. Organic amendments such as VC and VW include a variety of plant growth-regulating components such as micro and macro elements, vitamins, enzymes, and hormones that have been shown to reduce the harmful effects of salts on plants. 
  • 2.1K
  • 03 Nov 2022
Topic Review
Impact of the Pandemic and War on Energy
The COVID-19 pandemic and Russia’s war on Ukraine have impacted the global economy, including the energy sector. The pandemic caused drastic fluctuations in energy demand, oil price shocks, disruptions in energy supply chains, and hampered energy investments, while the war left the world with energy price hikes and energy security challenges. The long-term impacts of these crises on low-carbon energy transitions and mitigation of climate change are still uncertain but are slowly emerging. Both crises initially appeared as opportunities for low-carbon energy transitions: the pandemic by showing the extent of lifestyle and behavioral change in a short period and the role of science-based policy advice, and the war by highlighting the need for greater energy diversification and reliance on local, renewable energy sources. However, the early evidence suggests that policymaking worldwide is focused on short-term, seemingly quicker solutions, such as supporting the incumbent energy industry in the post-pandemic era to save the economy and looking for new fossil fuel supply routes for enhancing energy security following the war. As such, the fossil fuel industry may emerge even stronger after these energy crises creating new lock-ins. This implies that the public sentiment against dependency on fossil fuels may end as a lost opportunity to translate into actions toward climate-friendly energy transitions, without ambitious plans for phasing out such fuels altogether. 
  • 2.1K
  • 06 Sep 2022
Topic Review
Heat Management Strategies for an Induction Motor
Induction motors have gained a renewed interest due to this new shift from conventional power sources to electric power. These motors are known for their high commencing torque, adequate speed control, and reasonable overload capacity. However, induction motors have an innate thermal issue wherein their lifespan and performance are strongly temperature dependent. Hence, it is highly essential to focus on the thermal management aspect of these motors to ensure reliability and enhance performance. This research suggests an integrated approach with two or more cooling strategies and help to serve members of the scientific community, manufacturers or motors users who are interested in the thermal management of induction motors
  • 2.1K
  • 15 Nov 2022
Topic Review
Geosynthetics in Sustainable Engineering Solutions
Geosynthetics have proven to provide sustainable solutions for geotechnical and geoenvironmental problems when used with natural materials.
  • 2.1K
  • 03 Dec 2021
Topic Review
Microbial Enzyme Applied to Plastic Depolymerization
The accumulation of synthetic plastic waste in the environment has become a global concern. Microbial enzymes (purified or as whole-cell biocatalysts) represent emerging biotechnological tools for waste circularity; they can depolymerize materials into reusable building blocks, but their contribution must be considered within the context of present waste management practices. 
  • 2.1K
  • 28 Feb 2023
Topic Review
Solar Water Heating Systems
Solar water heating system (SWHS) is known as a common application of solar energy where the received radiation is changed into heat and then transferred into a circulated medium, mostly water and air. By this means, electric water heaters are substituted by SWHS to support space heating and domestic hot water (DHW).
  • 2.1K
  • 28 Jan 2022
Topic Review
Role of Basalt Geochemistry in CO2 Storage
The geochemistry of basalt plays a crucial role in the storage of CO2, as it possesses natural properties that enable the capture and sequestration of CO2. Basalt exhibits a remarkable ability to react with CO2 and form stable carbonate minerals, a process known as mineral carbonation or carbon sequestration.
  • 2.1K
  • 06 Sep 2023
Topic Review
Biodiesel Production from Fish Waste
Biofuels including biodiesel, bioethanol, biobutanol, biohydrogen, etc., are generated from different biological sources, and their waste which stands as the best alternative in the present scenario. Specifically, the utilization of biological wastes as raw materials for the production of biofuels is considered as best waste management practice. To date, most of the biodiesel production research has been carried out with plant, algal, and microbial samples, or their waste. It is a well-known fact that diesel can also be produced from specific oily fish and their waste using different methods. In addition, fish waste constitutes a major quantity compared to other food waste which is a serious concern. Furthermore, the disposal of fish waste shows an impact on both the environment and the economy. Hence, the development of protocols for the efficient production of biodiesel from fish waste is the ultimate goal. 
  • 2.1K
  • 26 Sep 2023
Topic Review
Development of Slope Treatment Technologies
In light of growing concerns regarding climate change and the finite availability of natural resources, it is imperative that modern slope treatment practices align with the principles of sustainable development. The attainment of environmentally sound, economically viable, and socially equitable infrastructure necessitates a holistic and long-term perspective on the impacts and tradeoffs associated with projects. Life cycle assessment (LCA) has emerged as a standardized framework for comprehensively evaluating the environmental impact of products, processes, and technologies throughout their entire life cycle. By quantifying resource use, emissions, and other environmental issues associated with a system from raw material extraction to its disposal, LCA aims to prevent the shifting of problems among assessment boundaries or phases. Against the backdrop of global energy conservation and carbon reduction efforts, LCA research has found widespread application in fields such as the chemical industry, civil engineering, agriculture, material science, and biological science. However, despite the rapid proliferation of LCA studies across many industries, its application in geotechnical engineering domains like slope treatment has remained limited.
  • 2.0K
  • 16 Jan 2024
Topic Review
Life Cycle Assessment of Embodied Carbon in Buildings
The environment demands a reduction in greenhouse gas (GHG) emissions, as building and construction are responsible for more than 40% of the energy consumed worldwide and 30% of the world’s GHG emissions. Many countries have aligned themselves with the Paris agreement, following its target of achieving net zero carbon emissions, although some governments are focused on the operational energy efficiency part of the equation instead of the whole equation. Building embodied carbon assessments can be compared to the more widely used and standardized life cycle assessment approach in terms of methodology (LCA), which focuses on quantifying carbon emissions throughout a building’s life cycle.
  • 2.0K
  • 02 Dec 2022
Topic Review
Integrated Microbial Fuel Cell System
Microbial fuel cell is an exclusive treatment for the management of contaminated water and energy production based on microbe–electrode interaction. Although the technology has developed significantly in recent years, it is still far from being employed in the practical field. Scalability problems, including external and internal resistance, size challenges, and cathode problems, are the reasons for its confined efficiency. MFCs appear to have the potential to be integrated into other processes, such as sediment MFCs (SMFCs), desalination cells (DS), membrane biofilters, and constructed wetlands (CWs).
  • 2.0K
  • 25 Nov 2021
Topic Review
Seaweed Polysaccharides in Agriculture
The seaweed-based biostimulants available in the market are proven to achieve better results than synthetic commercial fertilizers in plant growth parameters. There are many compounds present in seaweeds that are responsible for the plant bioactivities. Seaweed polysaccharides, such as agar, alginate, and carrageenan, make up most of the seaweed biomass and are proven to achieve excellent results in agricultural crops (in poly- and oligosaccharides formula). These types of compounds are reported to improve seed germination and plant vigor, increase the uptake of soil nutrients, and protect plants against several abiotic and biotic stresses such as salinity, drought, temperature, and pathogens. 
  • 2.0K
  • 15 Jun 2023
Topic Review
Light-Based Removal of Emerging Contaminants
Contaminants of emerging concern (CECs) are currently an unregulated class of contaminants with increasing global presence and awareness. However, the management of CECs in water bodies is particularly challenging due to the difficulty in detection and their recalcitrant degradation by conventional means. Light-based oxidation processes are viable options for such application. Light-driven oxidation processes use light as an irradiation source to generate oxidative species for the degradation of emerging contaminants. The key few technologies available are discussed in the review article: photo/Fenton, photocatalysis, photolysis, UV/Ozone. Herein, a cost–benefit analysis on various light-based processes was conducted to access the suitability for CECs degradation. It was found that the UV/Ozone process might not be suitable due to the complication with pH adjustments and limited light wavelength. It was found that EEO values were in this sequence: UV only > UV/combination > photocatalyst > UV/O3 > UV/Fenton > solar/Fenton. The solar/Fenton process has the least computed EEO < 5 kWh m−3 and great potential for further development. Newer innovations such as solar/catalyst can also be explored with potentially lower EEO values. Light-based processes could also be used to detect  CECs in surface water. Hence forming the 2 pronged approach for CEC management.
  • 2.0K
  • 06 Sep 2021
Topic Review
Factors of Consumer Attitudes towards Organic Food Products
Globally, organic food production and consumption have significantly increased, driven largely by perceived positive impacts on consumer health, the environment, and sustainable development. In emerging economies, consumers often lack trust in institutions which are responsible for ensuring food safety and quality. Certification is the most influential factor in consumers’ attitudes towards organic food products. In addition, actors involved in the organic food system should make an effort to better communicate the health, environmental, and social benefits associated with the consumption of organic food products to consumers, given that health and environmental issues significantly influence consumers’ attitudes towards organic food products. A joint effort should be made to increase awareness and knowledge of the provision of other positive externalities of organic farming, including other sustainability aspects related to animal welfare, rural development, local origin, and respect for human rights. This indicates that there is potential for growth of the organic market considering that most consumers have concerns about food safety, health, and the environment.
  • 2.0K
  • 13 Jun 2022
Topic Review
Soil Remediation Strategy
Although soil is a valuable and non-renewable ecological system, it has always been subject to widespread degradation due to anthropic activities. The most severe risks are point source and diffuse soil pollution. The remediation of contaminated soils and sites is, therefore, a significant step in the protection of the environment and living organisms, and must be included in the broader multidisciplinary scenario of strategic green transition.
  • 1.9K
  • 15 Feb 2022
Topic Review
Biochar in Remediation of Organic Pollutants in Water
Biochar is a biological material for environmental remediation due to its low-cost precursor (waste), low toxicity, and diversity of active sites, along with their facile tailoring techniques. Due to its versatility, biochar has been employed as an adsorbent, catalyst (for activating hydrogen peroxide, ozone, persulfate), and photocatalyst. Biochar could also be applied in remediation of organic pollutants in water.
  • 1.9K
  • 23 Feb 2022
Topic Review
A Thermo-Catalytic Pyrolysis of Polystyrene Waste Review
Global polystyrene (PS) production has been influenced by the lightness and heat resistance this material offers in different applications, such as construction and packaging. However, population growth and the lack of PS recycling lead to a large waste generation, affecting the environment. Pyrolysis has been recognized as an effective recycling method, converting PS waste into valuable products in the chemical industry. The conversion of PS into a liquid with high aromatic content (84.75% of styrene) can be achieved by pyrolysis. In addition, PS favors the production of liquid fuel when subjected to co-pyrolysis with biomass, improving its properties such as viscosity and energy content. 
  • 1.9K
  • 12 Apr 2023
  • Page
  • of
  • 26
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of COVID-19
Encyclopedia of Engineering
Encyclopedia of Social Sciences
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Academic Video Service
Feedback