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Topic Review
Sustainable Energy Strategies for Power Purchase Agreements
Renewable energy strategies for sustainable development perform as best practices and strategic insights necessary to support large scale organizations’ approach to sustainability. Power Purchase Agreements (PPAs) enhance the value of such initiatives. A renewable PPA contract delivers green energy efficiently to organizations that seek sustainability benefits. Consequently, various approaches that define PPAs are utilized to motivate both interested parties to participate in such deals.
  • 994
  • 30 Oct 2023
Topic Review
Hydrothermal Carbonization of Agricultural Biogas Production Process
In agricultural biogas plants, besides biogas, the by-product digestate is also produced. Due to its high moisture content and organic origin, it can successfully be applied in the hydrothermal carbonization process to avoid the fate of landfilling. The type of feedstock and the parameters of the hydrothermal conversion (HTC) process, such as temperature, pressure and residence time, affects the physical and chemical characteristics of hydrochar. Therefore, its possible application might be as a biofuel, fertilizer, soil improver, adsorber, or catalyst. 
  • 993
  • 01 Aug 2023
Topic Review
Sustainable-Big Data Analytics for the Smart Grid
The smart grid enables efficient communication between utilities and the end- users, and enhances the user experience by monitoring and controlling the energy transmission. The smart grid deals with an enormous amount of energy data, and the absence of proper techniques for data collection, processing, monitoring and decision-making ultimately makes the system ineffective.
  • 989
  • 21 Dec 2021
Topic Review
Municipal Solid Waste Landfill
Landfilling stands among the main elements in a solid waste management strategy even after the implementation of the 3Rs: reduce, recover, recycle. This is due to the fact that, in most cases, not all waste can be recovered and recycled. 
  • 989
  • 27 Apr 2023
Topic Review
Effects of Temperature/Water Types on Coronavirus Decay
The analysis of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) gene copy numbers in wastewater samples can provide quantitative information on Coronavirus Disease-19 (COVID-19) cases within a sewer catchment. However, many wastewater-based epidemiology (WBE) studies have neglected virus decay during the wastewater transportation process in sewers while back-calculating COVID-19 prevalence. Among various sewer condition parameters, wastewater temperature and dilution by fresh/saltwater infiltration may result in a significant change to the virus decay, in terms of both infectivity and Ribonucleic Acid (RNA). 
  • 982
  • 22 Mar 2023
Topic Review
Graphene Family Nanomaterials (GFN)-TiO2
TiO2 is a naturally occurring oxide of titanium with structural stability and corrosion resistance. Although TiO2 is typically considered to be of low toxicity, the development of TiO2 nanotechnologies has resulted in increased human and environmental exposure, putting TiO2 nanoparticles under toxicological scrutiny. The points of view on the intrinsic properties of TiO2, GFNs (pristine graphene, graphene oxide (GO), reduced GO, and graphene quantum dots (GQDs)), and GFN-TiO2 are presented. This entry also explains practical synthesis techniques along with perspective characteristics of these TiO2- and/or graphene-based materials. The enhancement of the photocatalytic activity by using GFN-TiO2 and its improved photocatalytic reactions for the treatment of organic, inorganic, and biological pollutants in water and air phases are reported. It is expected that this entry can provide insights into the key to optimizing the photocatalytic activity of GFN-TiO2 and possible directions for future development in these fields.
  • 980
  • 01 Dec 2021
Topic Review
Microbial Fuel Cells
The intensive energy requirement of conventional wastewater treatment for aeration demands an alternative technological option that requires less energy for its operation. Due to its cost-effectiveness, biological processes such as activated sludge have been widely used for wastewater treatment. However, this technique depends on the ability of bacterial population to maintain acceptable effluent quality. If the treatment is interfered with, the bacterial population respond to the varying influents. When this occurs, exceeding effluent limits lead to environmental damage and costly fines. Consequently, treatment facilities have to be overhauled, resulting in a loss of time and financial resources.
  • 978
  • 23 Dec 2022
Topic Review
Mosque Typo-Morphological Classification for Pattern Recognition
In the Muslim community, the congregation mosque, or masjid al-Jami in Arabic, is a place with expressive connotations. It is a place of worship and a place of gathering. Mosques are buildings that are intended to be acceptable for worship.
  • 969
  • 25 Dec 2023
Topic Review
Microplastics and Microfibres Treatment
Microplastics (MPs), and specifically microfibres (MPFs), are ubiquitous in water bodies, including wastewater and drinking water. In this work, a thorough literature review on the occurrence and removal of MPs, and specifically MPFs in WWTPs and DWTPs, has been carried out. When the water is treated, an average microfiber removal efficiency over 70% is achieved in WWTPs and DWTPs.
  • 968
  • 05 Nov 2021
Topic Review
Bottom Ash Waste Management in Building Industry
MSWIBA development fits into the European Green Deal, Sustainable Development Goals (SDGs), and the Circular Economy (CE). The combustion of MSW in incineration plants generates more than 30% of secondary waste concerning the inlet stream. The main residue is MSW incineration bottom ash (MSWIBA), which accounts for ca. 90% of MSW incineration solid residues.
  • 964
  • 01 Jun 2022
Topic Review
Online Pipeline Characterisation on Autonomous Underwater Vehicles
Nowadays, more frequently, it is necessary to perform underwater operations such as surveying an area or inspecting and intervening on industrial infrastructures such as offshore oil and gas rigs or pipeline networks. The use of Autonomous Underwater Vehicles (AUV) has grown as a way to automate these tasks, reducing risks and execution time. One of the used sensing modalities is vision, providing RGB high-quality information in the mid to low range, making it appropriate for manipulation or detail inspection tasks. This research presents the use of a deep neural network to perform pixel-wise 3D segmentation of pipes and valves on underwater point clouds generated using a stereo pair of cameras. In addition, two novel algorithms are built to extract information from the detected instances, providing pipe vectors, gripping points, the position of structural elements such as elbows or connections, and valve type and orientation. The neural network and information algorithms are implemented on an AUV and executed in real-time, validating that the output information stream frame rate of 0.72 fps is high enough to perform manipulation tasks and to ensure full seabed coverage during inspection tasks. The used dataset, along with a trained model and the information algorithms, are provided to the scientific community.
  • 962
  • 11 Nov 2022
Topic Review
Biomaterials in 3D Printing
Additive manufacturing (AM), also known as 3D printing, encompasses a wide range of techniques for applications ranging from on-demand production to functional prototypes. 3D printing is mainly used in industrial sectors such as aerospace, automotive, medical, dental, construction, art and fashion. Fossil fuel-based materials, such as plastics and metals, as well as concrete, etc., are widely used to produce 3D-printed products. Innovative 3D technologies using new bio-based renewable materials have shown promising results for everyday applications, opening up new opportunities for sustainable 3D printing in the future.
  • 959
  • 02 Aug 2023
Topic Review
Membrane Bioreactor for Removal of Dyes
Access to clean water is crucial for human health and the advancement of society. However, the decline in water quality has become a serious global issue due to human activities. The United Nations introduced 17 Sustainable Development Goals (SDGs) with the aim of creating a sustainable future for all humankind. One of the most significant of these goals is “Clean Water and Sanitation for All”. However, the discharge of various contaminants into aquatic environments impedes progress towards achieving SDG6. Among industrial effluents, the textile and dye industries are considered to be major contributors to wastewater production. Dyestuffs, which are synthetic, complex aromatic compounds, and ionizing agents, are widely used as coloring agents in industries such as paper, textiles, food, dyeing, and cooking. Following the dyeing process, approximately 15% of the used dyes remain in the wastewater stream, making the colored wastewater effluent a major concern. Conventional wastewater treatment plants have difficulty in removing such chemicals, resulting in over 200,000 tons of dyes being discharged each year in the environment. The release of dyes results in water pollution with resistant compounds that are not easily broken down by natural degradation processes. Several methods have been established for treating dyes from water bodies, including physicochemical and biological approaches. Physicochemical methods, such as membrane filtration, adsorption, ion exchange, advanced oxidation processes (AOPs), and coagulation, have limitations in the removal of dyes due to high cost, inefficiency, and the potential for secondary pollution. In contrast, biological treatment methods, such as membrane bioreactors (MBRs), are cost-effective, safe, environmentally friendly, and efficient for removing dyes. Among the various biological treatment methods, MBRs are regarded as one of the most effective methods for treating wastewater. MBRs are a combination of units for biological degradation and physical filtration
  • 950
  • 21 Mar 2023
Topic Review
Fibrous Plant-Based Food Waste for Sorbing Heavy Metals
“Heavy metals” are associated with environmental pollution, food contamination, and toxicity and have adverse effects on terrestrial and aquatic ecosystems and animal and human health. Hazardous heavy metals and metalloids, such as arsenic (As), cadmium (Cd), chromium (Cr), lead (Pb), and mercury (Hg), and several essential heavy metals, such as copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), and zinc (Zn), above threshold levels, have been identified as priority contaminants and one of the key environmental issues of global concern due to their mobility in terrestrial and natural aquatic ecosystems and their carcinogenic nature. Use of inexpensive and abundantly available biosorbents generated from fibrous plant-based food-waste materials to remove heavy metals has garnered considerable research attention.
  • 950
  • 01 Jun 2023
Topic Review
Recent Advances of Perovskite Solar Cells
Perovskite solar cells (PSC) have been identified as a game-changer in the world of photovoltaics. This is owing to their rapid development in performance efficiency, increasing from 3.5% to 25.8% in a decade. Further advantages of PSCs include low fabrication costs and high tunability compared to conventional silicon-based solar cells. 
  • 923
  • 05 Aug 2022
Topic Review
High-Solids Anaerobic Digestion
The increasing global population and urbanization have led to a pressing need for effective solutions to manage the organic fraction of municipal solid waste (OFMSW). High-solids anaerobic digestion (HS-AD) has garnered attention as a sustainable technology that offers reduced water demand and energy consumption, and an increased biogas production rate. 
  • 922
  • 28 Sep 2023
Topic Review
Modeling of Two-Phase Volumetric Expanders
Two-phase expansion is the process where a fluid undergoes a pressure drop through or in the liquid–vapor dome. Due to the volume increase in volumetric expanders, a pressure drop occurs in the fluid resulting in flashing phenomena occurring. These phenomena have been studied before in other processes such as two-phase flows or static flash. However, this has not been extensively studied in volumetric expanders and is mostly neglected.
  • 904
  • 28 Jul 2022
Topic Review
Circular Design Strategy for Bio-Based Food Packaging Preproduction
The success factor of the industrial transition to circularity is that this new economy model is regenerative by design. The Circular Design Guide prepared by the Ellen MacArthur Foundation in cooperation with IDEO distinguishes six circular design strategies: Two circular design strategies are directly applicable in food packaging: smart material choice, considering a product’s end-of-life treatment in the choice of materials and inputs (for example, durable, biodegradable, recycled or recyclable materials) and closed loop or take back, referring to collections of old or used products and recovering the value of the materials by recycling or reusing them to make new products. The smart material choice circular design strategy (the choice of packaging material), which is applied in the preproduction life cycle stage, directly correlates with all circular re-strategies: firstly, packaging material savings (reduce) could be achieved if optimal material properties and minimum material usage were applied.
  • 898
  • 08 Jun 2022
Biography
Rajesh Jesudoss Hynes Navasingh
Dr. N.Rajesh Jesudoss Hynes graduated in Mechanical Engineering from Government College of Engineering, Tirunelveli in 2000. He obtained his Masters in Production Engineering from Indian Institute of Technology, Delhi. In 2014, he was awarded Ph.D degree for his research thesis on Friction Welding of dissimilar materials by Anna University, Chennai. Currently, he is with Faculty of Mechanical E
  • 896
  • 18 Oct 2023
Topic Review
Water Treatment Using Functional Composites
Due to its low cost, biosorption technology has been extensively carried out to treat heavy metal-laden wastewater using biosorbents. The studies on heavy metal biosorption mechanisms and the simulation of mathematical modeling on the biosorption process have enhanced scientific understanding about the binding between target metal cations and the functional group on different surfaces of biomasses as a biosorbent.
  • 885
  • 21 Feb 2023
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