30 research outputs found
Nanomaterials for Environmental Engineering and Energy Applications
No full textScience and technology in the global scenario are in the path of newer scientific regeneration and rejuvenation. Today is the age of nanomaterials and engineered nanomaterials. The vast scientific prowess of nanomaterials applications, the needs of energy and environmental sustainability, and the futuristic vision of environmental protection will all lead a long and visionary way in unraveling the scientific truth of nanotechnology and material science. The worldwide energy demand is progressing at a rapid pace, and according to the forecasts of the International Energy Agency, it is expected to rise by approximately 50% until 2030. Currently over 80% of the primary energy demand is covered by fossil fuels. Although their reserves will last for few decades, they will not be able supply the huge demand of the energy in the future. Also, nuclear energy covers a part of the global energy demand and has an unforeseen future. Here comes the importance of nanomaterials, engineered nanomaterials, and renewable energy. In this chapter, the author with lucid and cogent insight elucidates on the applications of nanomaterials for environmental engineering and energy applications with a clear vision towards furtherance of global science and engineering. The scientific directions in the field of energy and environmental sustainability are also discussed and described in details. The main hallmark of this chapter is the detailed discussion on the recent and significant research endeavor in the field of nanomaterials applications in environmental protection, water purification, industrial wastewater treatment, and groundwater remediation. The other cornerstones of this treatise in the application of nanomaterials and nanotechnology in the field of energy science and engineering. The challenges, the vision, and the targets of energy engineering, renewable energy, and energy sustainability are also the salient features of this well-researched treatise. Science and engineering of nanomaterials and nanotechnology will surely open up new vistas of scientific discernment and deep scientific foresight as global environmental remediation and global concerns of renewable energy assumes immense importance. The author deeply targets and elucidates on these scientific issues and scientific intricacies
Non-Faradaic Electrolysis : Concurrent Migration of Nitrogen and other Electroneutral Molecules during Electrolysis
No full textDepartment of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta-32
Manuscript received 18 April 1973; accepted 25 May 1973
Low current electrolysis of sufficiently dilute solutions was previously shown by the author to exhibit a number of non-Faradaic features. It is now reported that when such electrolysis is carried out in a cell arrangement wherein the electrolyte in the non-electrodic region is exposed to an atmosphere of some electroneutral molecules for example, nitrogen, argon, etc., another highly unexpected feature is observed in addition to the usual non-Faradaic anomalies. A considerable volume of nitrogen or argon migrates away from the non-electrodic region and gets liberated with the electrode gases. Besides, a non-stoichiometric mixture of hydrogen and oxygen of comparable volume is simultaneously liberated in the region from where the nitrogen or argon migrates out
Biobased Materials and the Vast Domain of Environmental Pollution Control–A Critical Overview
No full textThe world of chemical engineering, environmental engineering, and nanotechnology is in the utmost need for civilization progress. Depletion of fossil fuel sources and loss of ecological biodiversity are veritably challenging the vast scientific firmament. Petroleum engineering science and fossil fuel sources are today standing in the midst of vast scientific vision, engineering ingenuity, and verve. Environmental pollution and energy crisis are two vital issues confronting humankind today. Sustainable development is today in a state of great disaster. Renewable energy scenarios and energy sustainability are today the need of the hour. Thus there is a need for the application of bio-based materials. The author deeply unveils the scientific challenges in the field of biotechnology and biological engineering. The other areas of scientific research endeavor are the field of biofuels and their vast and varied applications. Environmental and energy sustainability as regards the application of biofuels are the other cornerstones of this paper. Conventional and nonconventional environmental engineering techniques will surely open up new knowledge dimensions and scientific vision in the global scientific order in decades to come. A deep scientific understanding in the field of advanced oxidation processes, ozonation, membrane science, and desalination science are the other areas of scientific regeneration. Every new area of green and environmental sustainability is discussed in this paper. Drinking water and industrial wastewater treatment and its deep scientific profundity will surely unravel the scientific intricacies in the field of environmental engineering, water process engineering, and chemical engineering. Today, a newer scientific imagination and scientific progeny are emerging as civilization moves forward. Thus, the author targets the areas of renewable energy and energy sustainability
Carbon Nanostructures, Nanomaterials and Energy Storage–A Critical Overview and the Visionary Future
No full textThe world of science, engineering and technology of carbon nanotubes are today in the avenues of scientific regeneration and scientific ingenuity. In a similar way, environmental protection science stands in the crucial juncture of deep scientific introspection. Rapid industrialization, advances in manufacturing, global climate change, global warming and population growth are devastating the environment and human health. Nanotechnology today is a forerunner towards a greater scientific emancipation of the science of sustainability. Environmental or green sustainability is the utmost need of the hour. In this paper, the authors deeply elucidate advancements in the field of carbon nanotubes applications in environmental engineering. Also, carbon nanotube applications and energy storage are the other hallmarks of this treatise. Water purification, drinking water treatment and industrial wastewater treatment are the immediate needs of civilization today. Millions of people around the world are without pure drinking water and proper sanitation. Arsenic and heavy metal groundwater contamination in many developing and developed nations around the world are destroying the vast scientific fabric. The author unfolds the scientific intricacies and the scientific truth in the application of nanotechnology in industrial wastewater treatment. Nanotechnology and nano-engineering are the true vision and the scientific ingenuities of modern civilization. This is a comprehensive investigation in the field of industrial wastewater treatment and management. Also, the interface of industrial wastewater treatment and the application of nanomaterials are deeply elucidated in this treatise. Provision of basic human needs such as food, water, shelter, human habitat, education and sustainability comes under United Nations Sustainable Development Goals. Energy and environmental sustainability will go a long and visionary way in the true emancipation of science, technology and engineering globally. This treatise will unravel and unfold the limitations, the challenges and the scientific barriers in the application of carbon nanotubes in environmental remediation and water and wastewater treatment. The authors also pointedly focuses on the conventional and non-conventional environmental engineering techniques in arsenic and heavy metal removal from drinking water and groundwater. A newer visionary era will emerge in the field of environmental engineering, nanotechnology and chemical engineering as man and mankind surge ahead. The author also focuses on energy engineering applications of carbon nanotubes and the vast domain of nanotechnology. The pursuit and the triumph of the domain of water and environmental remediation are deeply elucidated in this paper
Green Sustainability and Arsenic Groundwater Remediation in Developing countries—A Far-Reaching Review
No full textThe world of science and technology of environmental engineering and environmental protection are on the path of newer scientific regeneration and deep scientific understanding. Water and wastewater treatment in the global scenario today stands in the middle of deep scientific introspection, comprehension and vision. Arsenic and heavy metal groundwater contamination are burning and vexing global issues and are destroying the vast scientific and engineering landscape. Sustainability whether it is energy, environmental or socio-economic is the utmost need of the hour. In this article, the author deeply elucidates and describes the application of green or environmental sustainability in the mitigation of arsenic contamination of groundwater in developing countries particularly. The authors also stress upon the various arsenic remediation technologies and the immense scientific vision behind it. Scientific cadence, deep scientific and knowledge prowess and scientific understanding in the field of environmental engineering will surely lead a visionary way in the true unraveling of the scientific intricacies and the scientific difficulties in the application of green and environmental sustainability in water remediation and environmental protection globally. This treatise deeply discusses these issues with vast scientific vision, scientific understanding and scientific ingenuity
Small bowel obstruction secondary to primary enterolith: A rare and delayed complication of radiation enteritis
No full text
Towards A Competitive Manufacturing Sector
No full textThe Indian manufacturing sector has grown at an impressive average rate of 9.5 per cent annually since 2003-04. Its sustained growth is crucial for generating employment opportunities needed to absorb the rapidly expanding workforce. In this context, this paper reviews the current state of the sector and focuses on determinants of its competitiveness. The paper finds that Indian manufacturing sector exhibits a great deal of regional variation and a marked dualism between the organized and the unorganized segments in terms of both productivity and wage levels. The level of labour absorption in the organized manufacturing sector has been weak as reflected in the declining labour intensity in this sector. This does not augur well for achieving inclusive growth. We also find that although there have been significant changes in the composition of exports in the last 20 years; India is still a very small player at the global level, especially in knowledge intensive and advanced technology products. Finally, the paper explores Indias potential for transforming itself into a hub of mass manufacturing. We find that the main constraints in doing so have been the low level of R&D, relative lack of skilled personnel and relatively low FDI levels.manufacturing, competitiveness, mass manufacturing
