scholarly journals A Review of the Conceptualization and Operational Management of Seaport Microgrids on the Shore and Seaside

2021 ◽  
Author(s):  
Nur Najihah Abu Bakar ◽  
Josep M. Guerrero ◽  
Juan C.Vasquez ◽  
Najmeh Bazmohammadi ◽  
Yun Yu ◽  
...  
Keyword(s):  
Power System ◽  
Environmental Issues ◽  
Cost Effective ◽  
Innovative Technology ◽  
Future Research ◽  
Maritime Logistics ◽  
Research Directions ◽  
Load Demand ◽  
Future Research Directions ◽  
Heavy Loads

Seaports are well known as the medium that has evolved into the central link between sea and land for complex marine activities. The growth in maritime logistics especially necessitates a large volume of energy supply to maintain the operation of sea trade, resulting in an imbalance between the generation and demand sides. Future projections for three major concerns show an increase in load demand, cost of operation, and environmental issues. In order to overcome these problems, integrating microgrids as an innovative technology in the seaport power system appears to be a vital strategy. It is believed that microgrids enhance the seaport operation by providing sustainable, environmentally friendly, and cost-effective energy. Despite the fact that microgrids are well established and widely used in a variety of operations on land, their incorporation into the seaport is still limited. The involvement of a variety of heavy loads such as all-electric ships, cranes, cold ironing, and buildings infrastructure makes it a complicated arrangement task in several aspects, which necessitate further research and leave space for improvement. In this paper, an overview of the seaport microgrids in terms of their concepts, requirements, and operation management is presented. It provides the perspectives of integrating the microgrid concept into a seaport from both shore side and seaside as a smart initiative for the green ports vision. Future research directions are discussed towards the development of more efficient marine power system.

scholarly journals A Review of the Conceptualization and Operational Management of Seaport Microgrids on the Shore and Seaside

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7941
Author(s):  
Nur Najihah Abu Bakar ◽  
Josep M. Guerrero ◽  
Juan C. Vasquez ◽  
Najmeh Bazmohammadi ◽  
Yun Yu ◽  
...  
Keyword(s):  
Power System ◽  
Environmental Issues ◽  
Cost Effective ◽  
Innovative Technology ◽  
Future Research ◽  
Maritime Logistics ◽  
Research Directions ◽  
Load Demand ◽  
Future Research Directions ◽  
Heavy Loads

Seaports are well known as the medium that has evolved into the central link between sea and land for complex marine activities. The growth in maritime logistics particularly necessitates a large volume of energy supply in order to maintain the operation of sea trade, resulting in an imbalance between generation and demand sides. Future projections for three major concerns show an increase in load demand, cost of operation, and environmental issues. In order to overcome these problems, integrating microgrids as an innovative technology in the seaport power system appears to be a vital strategy. It is believed that microgrids enhance seaport operation by providing sustainable, environmentally friendly, and cost-effective energy. Although microgrids are well established and widely used in a variety of operations on land, their incorporation into the seaport is still limited. The involvement of a variety of heavy loads such as all-electric ships, cranes, cold ironing, and buildings infrastructure renders it a complicated arrangement task in several aspects, which necessitates further research and leaves space for improvement. In this paper, an overview of the seaport microgrids in terms of their concepts and operation management is presented. It provides the perspectives for integrating the microgrid concept into a seaport from both shore side and seaside as a smart initiative for the green port’s vision. Future research directions are discussed towards the development of a more efficient marine power system.

scholarly journals Recent advances in novel functional nanomaterials-based oil/water separation techniques

2021 ◽  
Vol 272 ◽  
pp. 02031
Author(s):  
Sen Li ◽  
Yunzhe Ji ◽  
Xiaojing Li ◽  
Xiaojie Wang
Keyword(s):  
Functional Materials ◽  
Environmental Issues ◽  
Future Research ◽  
Functional Nanomaterials ◽  
Water Separation ◽  
Research Directions ◽  
Efficient Treatment ◽  
Oil Water Separation ◽  
Future Research Directions ◽  
Oil Water

The increasing amount of oily wastewater discharges caused major challenges for current environmental issues, such as oil-water purification and separation [1-6]. Thus, the development of new functional materials for the efficient treatment of oil-water is imperative [7-11]. This paper reviewed the recently developed oil-water separation technologies, which were based on novel functional nanomaterials, and presented representative works in detail. Finally, the challenges and future research directions of this area were briefly discussed.

scholarly journals A Comprehensive Review of Water-Based Nanolubricants

Lubricants ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 89
Author(s):  
Afshana Morshed ◽  
Hui Wu ◽  
Zhengyi Jiang
Keyword(s):  
Friction And Wear ◽  
Green Manufacturing ◽  
Environmental Issues ◽  
Future Research ◽  
Testing Methods ◽  
Research Directions ◽  
Water Based ◽  
Different Types ◽  
Future Research Directions ◽  
Lubrication Mechanisms

Applying nanomaterials and nanotechnology in lubrication has become increasingly popular and important to further reduce the friction and wear in engineering applications. To achieve green manufacturing and its sustainable development, water-based nanolubricants are emerging as promising alternatives to the traditional oil-containing lubricants that inevitably pose environmental issues when burnt and discharged. This review presents an overview of recent advances in water-based nanolubricants, starting from the preparation of the lubricants using different types of nanoadditives, followed by the techniques to evaluate and enhance their dispersion stability, and the commonly used tribo-testing methods. The lubrication mechanisms and models are discussed with special attention given to the roles of the nanoadditives. Finally, the applications of water-based nanolubricants in metal rolling are summarised, and the outlook for future research directions is proposed.

scholarly journals A Comprehensive Survey on Spectrum Sensing in Cognitive Radio Networks: Recent Advances, New Challenges, and Future Research Directions

Sensors ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 126 ◽  
Author(s):  
Youness Arjoune ◽  
Naima Kaabouch
Keyword(s):  
Cognitive Radio ◽  
Spectrum Sensing ◽  
Dynamic Spectrum Access ◽  
Radio Spectrum ◽  
Innovative Technology ◽  
Future Research ◽  
Research Directions ◽  
Wideband Spectrum Sensing ◽  
Recent Advances ◽  
Future Research Directions

Cognitive radio technology has the potential to address the shortage of available radio spectrum by enabling dynamic spectrum access. Since its introduction, researchers have been working on enabling this innovative technology in managing the radio spectrum. As a result, this research field has been progressing at a rapid pace and significant advances have been made. To help researchers stay abreast of these advances, surveys and tutorial papers are strongly needed. Therefore, in this paper, we aimed to provide an in-depth survey on the most recent advances in spectrum sensing, covering its development from its inception to its current state and beyond. In addition, we highlight the efficiency and limitations of both narrowband and wideband spectrum sensing techniques as well as the challenges involved in their implementation. TV white spaces are also discussed in this paper as the first real application of cognitive radio. Last but by no means least, we discuss future research directions. This survey paper was designed in a way to help new researchers in the field to become familiar with the concepts of spectrum sensing, compressive sensing, and machine learning, all of which are the enabling technologies of the future networks, yet to help researchers further improve the efficiently of spectrum sensing.

scholarly journals Reductive Defluorination and Mechanochemical Decomposition of Per- and Polyfluoroalkyl Substances (PFASs): From Present Knowledge to Future Remediation Concepts

2020 ◽  
Vol 17 (19) ◽  
pp. 7242
Author(s):  
Philipp Roesch ◽  
Christian Vogel ◽  
Franz-Georg Simon
Keyword(s):  
Cost Effective ◽  
Future Research ◽  
Research Directions ◽  
Decomposition Reactions ◽  
Sustainable Technologies ◽  
The Past ◽  
Remediation Strategies ◽  
Future Research Directions ◽  
Polyfluoroalkyl Substances

Over the past two decades, per- and polyfluoroalkyl substances (PFASs) have emerged as worldwide environmental contaminants, calling out for sophisticated treatment, decomposition and remediation strategies. In order to mineralize PFAS pollutants, the incineration of contaminated material is a state-of-the-art process, but more cost-effective and sustainable technologies are inevitable for the future. Within this review, various methods for the reductive defluorination of PFASs were inspected. In addition to this, the role of mechanochemistry is highlighted with regard to its major potential in reductive defluorination reactions and degradation of pollutants. In order to get a comprehensive understanding of the involved reactions, their mechanistic pathways are pointed out. Comparisons between existing PFAS decomposition reactions and reductive approaches are discussed in detail, regarding their applicability in possible remediation processes. This article provides a solid overview of the most recent research methods and offers guidelines for future research directions.

scholarly journals Cyber Physical Power System (CPPS): A review on measures and optimization methods of system resilience

2021 ◽  
Author(s):  
Gongyu Wu ◽  
Zhaojun S. Li
Keyword(s):  
Power System ◽  
Large Scale ◽  
Critical Infrastructure ◽  
Optimization Methods ◽  
Future Research ◽  
Research Directions ◽  
Critical Nodes ◽  
Future Research Directions ◽  
System Resilience ◽  
Assessment Measures

AbstractThe Cyber-Physical Power System (CPPS) is one of the most critical infrastructure systems in a country because a stable and secure power supply is a key foundation for national and social development. In recent years, resilience has become a major topic in preventing and mitigating the risks caused by large-scale blackouts of CPPSs. Accordingly, the concept and significance of CPPS resilience are at first explained from the engineering perspective in this study. Then, a review of representative quantitative assessment measures of CPPS resilience applied in the existing literature is provided. On the basis of these assessment measures, the optimization methods of CPPS resilience are reviewed from three perspectives, which are mainly focused on the current research, namely, optimizing the recovery sequence of components, identifying and protecting critical nodes, and enhancing the coupling patterns between physical and cyber networks. The recent advances in modeling methods for cascading failures within the CPPS, which is the theoretical foundation for the resilience assessment and optimization research of CPPSs, are also presented. Lastly, the challenges and future research directions for resilience optimizing of CPPSs are discussed.

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