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Topic Review
Advanced Oxidation Technologies
Advanced oxidation process (AOPs) based on sulfate radical (SO4●−) and singlet oxygen (1O2) has attracted a lot of attention because of its characteristics of rapid reaction, efficient treatment, safety and stability, and easy operation. SO4●− and 1O2 mainly comes from the activation reaction of peroxymonosulfate (PMS) or persulfate (PS), which represent the oxidation reactions involving radicals and non-radicals, respectively. The degradation effects of target pollutants will be different due to the type of oxidant, reaction system, activation methods, operating conditions, and other factors.
  • 793
  • 12 Oct 2022
Topic Review
Microplastics in Coastal Agglomerations
Microplastics are ubiquitously in various environments from the equator to the poles. Coastal agglomerations act as both a source and sink connecting the global microplastic cycles of oceans and continents. While the problem of microplastics is particularly severe and complex in the coastal zones, where both inland and marine pollution are concentrated, the present research aimed to provide hot topics and trend of coastal urban microplastic studies and to review the researches on microplastic pollution in the atmosphere and water bodies in coastal agglomerations in terms of characteristics, behavior and health threat of microplastics. The results of the bibliometric analysis showed an increase in the annual output of microplastic research. Research hot topics and clusters were analyzed using the VOSviewer. Characteristics of microplastics varied in abundance, size and polymer type in different environments and countries. Furthermore, coastal cities are taken as a system to sort out the input, output, and internal transmission pathways of microplastics. The health threat of microplastics to urban residents was briefly reviewed and the exposure and health risks of microplastics to infants and young children were of particular concern. Detailed and comprehensive studies on intervention and reduction in the transmission of microplastics between the atmosphere and water bodies, whether microplastics are harmful to infants and young children, and measures to reduce the risk of microplastic exposure are needed.
  • 793
  • 11 May 2023
Topic Review
Radio Atmospheric
A radio atmospheric signal or sferic (sometimes also spelled "spheric") is a broadband electromagnetic impulse that occurs as a result of natural atmospheric lightning discharges. Sferics may propagate from their lightning source without major attenuation in the Earth–ionosphere waveguide, and can be received thousands of kilometres from their source. On a time-domain plot, a sferic may appear as a single high-amplitude spike in the time-domain data. On a spectrogram, a sferic appears as a vertical stripe (reflecting its broadband and impulsive nature) that may extend from a few kHz to several tens of kHz, depending on atmospheric conditions. Sferics received from about 2,000 kilometres' distance or greater have their frequencies slightly offset in time, producing tweeks. When the electromagnetic energy from a sferic escapes the Earth-ionosphere waveguide and enters the magnetosphere, it becomes dispersed by the near-Earth plasma, forming a whistler signal. Because the source of the whistler is an impulse (i.e., the sferic), a whistler may be interpreted as the impulse response of the magnetosphere (for the conditions at that particular instant).
  • 789
  • 25 Nov 2022
Topic Review
Emission Convergence
Emission convergence is a fundamental ground for cooperative CO2 emission mitigation. 
  • 787
  • 24 Sep 2021
Topic Review
Action for Climate Empowerment (ACE)
Action for Climate Empowerment (ACE) is a term adopted by the United Nations Framework Convention on Climate Change (UNFCCC). It refers to Article 6 of the Convention’s original text (1992), focusing on six priority areas: education, training, public awareness, public participation, public access to information, and international cooperation on these issues. The implementation of all six areas has been identified as the pivotal factor for everyone to understand and participate in solving the complex challenges presented by climate change. The importance of ACE is reflected in other international frameworks such as the Sustainable Development Goals (SDGs, 2015); the Global Action Programme for Education for Sustainable Development (GAP on ESD, 2014); the Aarhus Convention (2011); and the Bali Guidelines (2010). ACE calls on governments to develop and implement educational and public awareness programmes, train scientific, technical and managerial personnel, foster access to information, and promote public participation in addressing climate change and its effects. It also urges countries to cooperate in this process, by exchanging good practices and lessons learned, and strengthening national institutions. This wide scope of activities is guided by specific objectives that, together, are seen as crucial for effectively implementing climate adaptation and mitigation actions, and for achieving the ultimate objective of the UNFCCC.
  • 786
  • 08 Nov 2022
Topic Review
Diazotrophs Makes Corals More Resistant to Heat Stress
During bleaching, corals expel millions of their symbionts, depriving the host from its main food source. One mechanism used by corals to resist bleaching consists in exploiting food sources other than autotrophy. Among the food sources available in the reefs, dinitrogen (N2)-fixing prokaryotes or planktonic diazotrophs (hereafter called ‘PD’) have the particularity to reduce atmospheric dinitrogen (N2) and release part of this nitrogen (diazotroph-derived nitrogen or DDN) in bioavailable form. The supply of PD allowed corals to maintain minimal chlorophyll concentration and symbiont density, sustaining photosynthetic efficiency and stimulating coral growth of up to 48% compared to unfed ones. By providing an alternative source of bioavailable nitrogen and carbon, this specific planktonic diazotroph feeding may have a profound potential for coral bleaching recovery. 
  • 781
  • 21 Apr 2022
Topic Review
CO2 Emissions in Asia–Pacific Region
Global warming has become the main concern in the current world; increased CO2 emissions are believed to be the main reason for this climate change. Therefore, the impacts of energy consumption, economic growth, financial development, and international trade on the CO2 emissions of 17 Asia–Pacific countries. Using unbalanced panel data for 61 years (1960–2020), the Driscoll and Kraay’s standard error and panel-corrected standard error (PCSE) models are employed to observe the effect of the studied variables on the CO2 emissions.
  • 781
  • 12 May 2022
Topic Review
Groundwater Numerical Models
Physically-based models are the most commonly used tools in quantitative groundwater flow and solute transport analysis and management. Traditionally, the conceptual or numerical models are applied to hydrological modelling in order to understand the physical processes characterising a particular system, or to develop predictive tools for detecting proper solutions to water distribution, landscape management, surface water–groundwater interaction, or impact of new groundwater withdrawals.  The need to address groundwater problems through alternative, relatively simpler modelling techniques pushed authors in different parts of the world to explore machine learning models.
  • 781
  • 15 Aug 2022
Topic Review
Application of Hydroxyapatite in Environmental Protection
Hydroxyapatite is, first of all, a natural occurring mineral. As such, the use of natural-derived hydroxyapatite (HAP) is encountered in several published works. The environmental application of such materials is briefly presented. 
  • 776
  • 20 Sep 2022
Topic Review
Influence of Digital Economy on Carbon Dioxide Emissions
Massive emissions of greenhouse gases, primarily carbon dioxide, are endangering not only sea level rise and extreme weather but also agricultural production and human life. Digital technologies such as big data, cloud computing, and artificial intelligence have been increasingly integrated into different commercial and social domains. The subsequent wave of the digital economy has become a massive force in transforming the traditional economic model, restructuring the global value chain, and promoting the economy’s green transformation. 
  • 776
  • 02 Jun 2023
Topic Review
Endocrine Disrupting Compounds
Endocrine disrupting compounds (EDCs) are contaminants with estrogenic or andro-genic activity that negatively impact human and animal communities.
  • 774
  • 24 Feb 2021
Topic Review
Single-Atom Metal Supported at Two-Dimensional MoS2
Due to increasing concerns about global warming and energy crisis, intensive efforts have been made to explore renewable and clean energy sources. Single-atom metals and two-dimensional (2D) nanomaterials have attracted extensive attention in the fields of energy and environment because of their unique electronic structures and excellent properties.
  • 774
  • 23 Oct 2023
Topic Review
Renewable Power and Heat for the Decarbonisation
Renewable energy (RE) solutions have been classified into technologies based on the use of renewable electricity and those used to produce heat for multiple industrial processes. Electrification will be key thanks to the gradual decrease in renewable power prices and the conversion of natural-gas-dependent processes. Industrial processes that are not eligible for electrification will still need a form of renewable heat. Among them, the following have been identified: concentrating solar power, heat pumps, and geothermal energy. These can supply a broad range of needed temperatures. Biomass will be a key element not only in the decarbonisation of conventional combustion systems but also as a biofuel feedstock. Biomethane and green hydrogen are considered essential. Biomethane can allow a straightforward transition from fossil-based natural gas to renewable gas. Green hydrogen production technologies will be required to increase their maturity and availability in Europe (EU). Energy Intensive Industries (EIIs)’ decarbonisation will occur through the progressive use of an energy mix that allows EU industrial sectors to remain competitive on a global scale. Each industrial sector will require specific renewable energy solutions, especially the top greenhouse gas-emitting industries. 
  • 771
  • 17 Jan 2023
Topic Review
Application of Non-Thermal Plasma over Zeolite-Based Materials
 Zeolite based materials are widely used as adsorbents and catalysts for purifying air pollutants (such as NO) and VOCs due to rich pore structure, regular pore distribution and numerous ion exchange sites. Heat treatment is a necessary procedure to remove impurities in pores and promote the uniform dispersion of metal active substances, and then zeolite based adsorbent/catalyst is used to purify nox/volatile organic compounds. However, the traditional thermal field treatment (i.e. high temperature calcination, high temperature purging, etc.) requires a lot of energy consumption. In contrast, non thermal plasma and other unconventional external field treatments show significant advantages of high efficiency, low energy consumption and low pollution, and are used to replace traditional heat treatment in many fields. 
  • 771
  • 01 Dec 2023
Topic Review
Ecotoxicological Impact of Bioplastics Biodegradation
The emergence of bioplastics presents a promising solution to the environmental impact of the plastics industry. Bioplastics are engineered to degrade in aquatic or soil environments. However, not all bioplastics are completely biodegradable, and some, like petrochemical-based plastics, may contribute to plastic pollution. The biodegradability of bioplastics is significantly different in different environmental conditions such as soil, marine, and composting environments. At the same time, bioplastics produced from natural resources contain a mixture of known and unknown materials and show 32% cytotoxicity, 42% oxidative stress, 67% baseline toxicity, and 23% antiandrogenicity in bioassays. The extensive biodegradation of bioplastics in soil can also change the soil nutrients, leading to eutrophication or stunted plant growth. However, many concerns have arisen, according to which bioplastics may not be an alternative option for global plastic pollution in the long run, and limited studies focus on this scenario. 
  • 770
  • 22 Dec 2023
Topic Review
Sustainability Monitoring with Robotic Accounting
The production of farm sustainability indicators is vital for all actors in the food chain. Robotic accounting could assist in the monitoring and compliance of farm performance, to assess the various aspects of sustainability. Robotic process automation (RPA) is aimed at the automatic execution of administrative tasks that reproduce the work that humans do, comparable to robotics in manufacturing.
  • 768
  • 30 Jun 2022
Topic Review
Traffic-Related PM Accumulation by Vegetation of Urban Forests
In terms of the process of air purification, a lot of attention has been devoted to trees and shrubs. Little attention has been paid to herbaceous vegetation from the lower forest layers. Urban forests are often located on the outskirts of cities and surround exit roads where there is heavy traffic, generating particulate matter (PM) pollution. 
  • 766
  • 14 Mar 2022
Topic Review
Effect of Packaging and Logo on Consumers’ Attention
Given the significance of packaging and logos, the type of form element that can attract consumers has become a crucial research topic. Attention and attraction signify the first stage of the attitude toward further consumption behavior and visual communication to understand the product or service, which is a cognitive stimulation and has a crucial effect on further purchase attitude.
  • 763
  • 21 Sep 2023
Topic Review
Environmental Sustainability in China
Countries encounter conflicting policy options in reaching fast development goals due to high resource use, rapid economic expansion, and environmental degradation.  The QQ regression outcomes showed that for all tails of a combination of GDP and CO2, the influence of GDP was positive. Furthermore, urbanization impacted CO2 emissions positively in the combination of quantiles of urbanization and CO2. Moreover, the effect of globalization on CO2 emissions was significant and positive for the majority of the tails. Lastly, in a majority of the quantiles, the effect of hydroelectricity consumption on CO2 emissions was negative.
  • 762
  • 22 Apr 2022
Topic Review
Practical Application of Temperature Indices in Horticulture
Temperature is the basic factor that differentiates vegetation around the world. All field experiments require the indication of the range of temperatures occurring in a given growing season. Temperature is an important factor determining fruit plant production, both in the growing season and in the winter dormant period. Various air temperature indicators were developed in a way that allowed the best possible description of adaptations of species, cultivars, and regions of adaptations to cultivation. They are based on experimentally obtained data and calculated optimal temperatures of growth and development of plants in particular development stages. In horticulture, the description of dependencies of the growth and development of plants on weather began to be accompanied with the development of simulation models.
  • 761
  • 22 May 2023
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