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Topic Review
Human Settlement Research on Climate Change Response
The RCHSCC (the research characteristics, stages and planning of carbon-oriented climate change response research in human settlements based on the literature related to research on carbon-oriented human settlements for climate change) predicts three major trends in the future—climate risk management, carbon technology upgrading and urban security and resilience—and offers three recommendations for governments and planners in terms of climate change adaptation and low-carbon and efficient development in human settlements.
  • 691
  • 01 Nov 2022
Topic Review
Economic Indicators in Water Sector for Circular Economy
Protection and sustainable management of water was indicated as one of the strategic tasks in the process of transformation towards a circular economy (CE) in the European Union (EU), therefore, the water and wastewater sector plays an important role in this process.
  • 685
  • 31 Dec 2021
Topic Review
Anaerobic Membrane Bioreactors for Wastewater Treatment
Anaerobic membrane bioreactor (AnMBR) technology is emerging as an alternative to conventional anaerobic treatment due to its complete biomass retention, short start-up time, high effluent quality, and small footprint.
  • 685
  • 30 Mar 2023
Topic Review
Towards Circular Economy for More Sustainable Apparel Consumption
The apparel industry causes environmental problems, particularly due to the shortening life cycle of garments and fast-fashion’s throw-away culture. The circular economy provides solutions to minimise and prevent these problems through innovative circular business models, which require changes in consumer behaviours. With the lens of environmental psychology, we analyse consumers’ willingness to acquire circular apparel considering four approaches on clothing life-cycle extension. We conducted an online questionnaire among Brazilian and Dutch consumers and tested if the Value-Belief-Norm (VBN) theory can explain the willingness of consumers to purchase circular apparel. Our results indicate that, overall, the variables from the VBN theory explain circular behaviour in the apparel industry and that the paths suggested by the model are supported by our analyses. Additionally, we tested and found that when all of the variables from the VBN theory were controlled for, materialistic values did not explain circular behaviours in the apparel industry among Brazilian respondents. However, they had a positive influence on some circular apparel behaviours among Dutch consumers. Overall, materialistic values did not play an important role in predicting willingness to consume circular clothing. Furthermore, the results suggest that the VBN theory predicts willingness to consume circular apparel better in the Netherlands compared to Brazil, suggesting that this behaviour may be perceived as more effortful for the Brazilian population. However, we highlight the need for future research.
  • 684
  • 12 Jan 2022
Topic Review
Fire Tracking Based on Satellite Videos
Fire tracking has become an attractive application of satellite remote sensing thanks to the characteristics of recent remote sensing images, such as high frequency, large range, and multi-spectrum. Additionally, the high-resolution images provide more information and high-time resolution data in forest fire monitoring, showing great potential in environment monitoring. In recent years, many researchers have concentrated on the activate fire detection based on single images, while a few pieces of literature tracked the fire and smoke based on multi-temporal detection or continuous detection. A vital component of fire tracking from remote sensors is the accurate estimation of the background temperature of an area in a fire’s absence, which helps identify and report fire activity.
  • 682
  • 29 Aug 2022
Topic Review
Graphene Applications in Microbial Fuel Cells
Microbial fuel cells are increasingly an object of interest due to the possibility of simultaneous electrical energy production and wastewater treatment, and connecting them with other technologies. In addition, this technology is used to recover different resources such as nutrients, e.g., nitrogen and phosphorus or critical metals, and for desalination and biodetection. One of the essential aspects on which intensive works are in progress is the material used to build electrodes. There has been considerable development in materials for electrodes used in microbial fuel cells. More and more often, scientists reach for materials based on the most recent achievements of technology, and one of them is graphene. This material is increasingly used in industry and science, including microbial fuel cells. Graphene is connected with other materials and modified in numerous ways, and it seems to be a perfect alternative for standard carbon or stainless steel electrodes.
  • 682
  • 20 Jan 2023
Topic Review
Rainwater Harvesting Systems
Rainwater harvesting (RWH) can be used to mitigate global water crises; however, they have been poorly received by communities because of the unsuitable quality of stored rainwater. Heterotrophic bacteria present in the water can degrade the water’s microbiological quality and create health issues. Moreover, exposure to visible light can affect both suspended and surface-attached heterotrophic bacteria, a phenomenon that is poorly investigated.
  • 680
  • 29 Jul 2021
Topic Review
Product Recycling Desirability Model
Product Recycling Desirability Model (PRDM) was coined as a competent model for prioritizing product selection for recycling due to its successful application in several international cases, including those of the United States, the United Kingdom, the European Union, China, and India. The model’s critical parameters were: (i) the ease with which the product’s components could be disassembled for recycling, (ii) the readiness of the recycling technology in place to carry out the recycling operation; and (iii) the criticality of the materials contained in end-of-life products, which make them prime candidates for recycling.
  • 677
  • 13 May 2022
Topic Review
Daylight in Downtown Area of a Compact City
Daylight is of utmost importance and should be the main source of light in most areas dedicated to working and living. When considering the contemporary way of living, it can be easily discerned that most of human life is spent indoors, yet in a typical architectonic design approach, daylight is too often hardly of consequence. Hence daylight becomes a critical factor. Designers comply with the legal requirements of the solar hours required for areas subjected to constant use. Simultaneously for electrical engineers’ daylight is only an additional source of light valued only where energy efficiency is concerned. 
  • 676
  • 28 Mar 2022
Topic Review
Acid-Resistant Thin-Film Composite Nanofiltration Membrane
Membrane filtration technology has attracted extensive attention in academia and industry due to its advantages of eco-friendliness related to environmental protection and high efficiency. Polyamide thin-film composite nanofiltration (PA TFC NF) membranes have been widely used due to their high separation performance. Non-acid-resistant PA TFC NF membranes face tremendous challenges in an acidic environment. Novel and relatively acid-resistant polysulfonamide-based and triazine-based TFC NF membranes have been developed, but these have a serious trade-off in terms of permeability and selectivity. Hence, how to improve acid resistance of TFC NF membranes and their separation performance in acidic environments is a pivotal issue for the design and preparation of these membranes.
  • 671
  • 12 Jan 2023
Topic Review
Sustainable Supply Chain Management for a Circular Economy
Sustainable supply chain management (SSCM) can implement ecological innovations that would collaborate to preserve the environment. Even more broadly, the circular economy (CE) emerges as a component for sustainable development, as it involves activities such as repair, reuse, refurbishment, and recycling. Thus, we conducted an integrative review of the international articles that relate the SSCM with CE.
  • 669
  • 15 Dec 2021
Topic Review
Mountain Permafrost Hydrology
Mountain Permafrost Hydrology can be defined as “the geoscience that describes and predicts the occurrence, circulation, and distribution of the water within high and cold mountainous terrain”.
  • 669
  • 30 Jan 2022
Topic Review
Typhoon Tracking Based on Satellite Videos
Object tracking is a hot topic in computer vision and remote sensing, and it typically employs a bounding box that locks onto the region of interest (ROI) when only an initial state of the target (in a video frame) is available. The rapid development of remote sensing technologies provides a new methodology for weather observation and forecasting tasks using high-resolution visual data. A growing body of literature investigating the deep neural network-based cyclone track prediction from satellite imagery sequences has been published.
  • 669
  • 26 Aug 2022
Topic Review
End-of-Life Management of Lithium-Ion Batteries and Circular Economy
Electric vehicles, which are primarily powered by lithium-ion batteries, have gained much attention as the future of transportation for their environmental and economic benefits. However, the economy of lithium-ion battery management is quite linear. A circular economy with reusing and end-of-life recycling of lithium-ion batteries, would reduce the social and environmental costs associated with the mining of metals, decelerate the depletion of natural resources, and prevent the improper management that often accompanies disposal.
  • 669
  • 01 Dec 2022
Topic Review
Lignocellulosic Biomass as a Renewable Source
Lignocellulosic biomass is the primary structural component of plant matter and is mostly inedible, generally referring to organic materials such as wood, grass, and agricultural crop residues. Biomass is a plentiful and carbon-neutral renewable energy source that may be used to create platform chemicals and fuels, especially considering that up to 75% of initial energy can be converted into biofuels.
  • 667
  • 13 Oct 2022
Topic Review
Treatment Wetlands in Natural Swimming Ponds
Natural swimming ponds using treatment wetlands (TWs) as an element of treatment of swimming water are an ecologically beneficial alternative to conventional pools. Unlike conventional swimming pools, in natural swimming ponds, the water treatment avoids the use of chemical methods and is based on the phenomenon of water self-purification and the rhizofiltration capacity of repository macrophytes in TWs of the regeneration zone, as well as on typical physical filtering processes (e.g., straining, sedimentation, or flotation), physicochemical filtration (physical and chemical adsorption, mainly of phosphorus), and biological filtration (nitrification and denitrification). 
  • 666
  • 30 May 2023
Topic Review
Electronic Nose and Traditional Methods of Ammonia Detection
Ammonia (NH3) represents a perilous gas that poses a substantial hazard to both human well-being and the environment, particularly within agricultural regions. Agricultural activities constitute a primary source of ammonia emissions. Thus, effective monitoring and measurement of ammonia sources in agriculture are imperative for mitigating its adverse impact. However, not all existing ammonia detection methods are suitable for discerning the low concentrations typically encountered in agricultural ammonia volatilizing (ranging from 0.01 to 5 parts per million). Consequently, curtailing ammonia volatilization from farmland assumes paramount importance, with real-time monitoring serving as a crucial mechanism for assessing environmental contamination and minimizing agricultural ammonia losses. Deploying appropriate detection methodologies ensures that requisite measures are taken to safeguard human health and the environment from the deleterious repercussions of ammonia exposure.
  • 658
  • 09 Aug 2023
Topic Review
Enhancement of Anaerobic Digestion Process with Biochar
Anaerobic digestion (AD) process is usually limited by factors such as process inefficiencies from substrate-induced instability, poor quality digestate, and poor management of effluent and emissions. Biochar, which is a highly porous carbonaceous material produced from the pyrolysis of biomass is an affordable accelerant that can be used to improve the efficiency of the AD process. Biochar has large specific surface area (SSA), high porosity, and abundant surface functional groups which allows for adsorption and ion exchange thereby removes free ammonia and ions and curbs their deleterious effect on the AD process. The performance of biochar in the AD process usually depends on its properties which are a function of pyrolysis conditions and the type of feedstock used in its production. However, these conditions/properties are not well understood. Additionally, the various mechanisms through which biochar enhances the performance of anaerobic digestion process. Accordingly, this research provides valuable insights into the utilization of biochar as an accelerator to enhance the AD process, addressing crucial factors such as optimal pyrolysis conditions, biochar dosage, and feedstock selection. Additionally, it delves into the mechanisms through which biochar positively influences the AD process, particularly by influencing microbial communities, reducing VFA levels, and mitigating the negative effects of ammonia. The research also highlights areas for further research in applying biochar for anaerobic digestion.
  • 651
  • 24 May 2023
Topic Review
Nanoparticle Application in Biofuel Production
Biofuel, an inexhaustible fuel source, plays a pivotal role in the contemporary era by diminishing the dependence on non-renewable energy sources and facilitating the mitigation of CO2 emissions. Due to the many constraints in existing technology and the resulting increased costs, the production of biofuels on a large scale is a laborious process. The production of biofuels can be enhanced with intervention of nanotechnology, owing to the unique characteristics of these nanoparticles. These nanoparticles interact with the microorganisms and enzymes leading to the enhancement in biofuel production.
  • 640
  • 24 Nov 2023
Topic Review
Phytoremediation of Domestic Wastewater
A circular economy (CE) based strategy is essential to progress toward Sustainable Development Goals (SDG). CE is centered on the conversion of waste into meaningful products and resource efficiency with the objective of promoting resource reuse. This study presents the potential of CE approaches in the phytoremediation of wastewater and energy recovery using hydroponic tanks. The integration of phytoremediation with bioenergy, construction and lifespan of hydroponic tanks in phytoremediation of wastewater, selection of aquatic plants, and the expected challenges in the implementation of CE in phytoremediation of wastewater were discussed. It further elucidates a comprehensive circularity assessment methodology that would enable and support a strategic CE framework for phytoremediation techniques in wastewater treatment. Additionally, a complete view of the feedstock conversion process into valuable end products was discussed in this CE strategic study. The findings obtained provided insights into the relative growth rate of the plant-based biomass harvested from the phytoremediation of domestic wastewater. It also provided information on the economic and technical feasibility of wastewater phytoremediation using hydroponic tanks for simultaneous recovery of treated water and plants’ biomass to enable large-scale implementation. Furthermore, optimizing resource recovery and bioenergy generation, developing new approaches and solutions, and improving process stability would help encourage and enhance the adoption of the CE framework in the phytoremediation of domestic wastewater.
  • 638
  • 30 Jun 2022
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