scholarly journals Recent Developments of Hydrogel Based Solar Water Purification Technology

2022 ◽  
Author(s):  
Shudi Mao ◽  
Md Johir ◽  
Casey Onggowarsito ◽  
An Feng ◽  
Long Nghiem ◽  
...  

Water scarcity is a severe problem all over the world, however most current large-scale water purification technologies are energy-intensive and require high capital and maintenance costs. Recently, hydrogel-based solar water...

1995 ◽  
Vol 1995 (1) ◽  
pp. 855B-857
Author(s):  
M. R. Ouwerkerk ◽  
P. R. H. Verbeek ◽  
T. Schut

ABSTRACT Trailing suction hopper dredges maintain ports and their entrance channels around the world. Several of these dredges have already operated as oil spill cleanup vessels as a secondary assignment. Different types of available oil spill response systems were applied. Recent developments allow these dredges to use their own dredge pumps, making these vessels by far the largest capacity oil spill cleanup vessels available in the world. The add-on system requires no modifications of the vessel and a relatively low investment. Tests have documented very good performance.


Author(s):  
Amra Bratovcic

The main urgent problem of humanity is related to clean water availability. Shortage of drinking water in most parts of the world has been a growing concern in recent times. This chapter will consider emerging contaminants present in the aquatic environment. The commonly present concentrations are in the range from mg/L to ng/L in wastewater, surface water, ground water, and drinking water. The challenges in wastewater and drinking water purification are dependent on the origin of the water. Solar photocatalysis is a new promising technology for the water purification. With solar, photocatalysis is possible to reduce organic contaminants present in water by using the sunlight. This chapter addresses the fundamental reaction mechanism, different type of photocatalytic nanomaterials based on TiO2, and recent developments in the reactor design for solar photocatalytic water purification from lab scale-up to large-scale application.


AL-HIDAYAH ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 1-24
Author(s):  
Allah Ditta ◽  
Muhammad Amjad

Water is the precious blessing of Allah Almighty which is found everywhere in the world. Hence, its usefulness is neglected, and it is wasted unreasonably. Due to its excessive use and human activities, the water sources are becoming polluted too. The rivers, streams and watercourses are too polluted for human use. This situation created water scarcity in the world. Pakistan is also facing acute water deficiency and it will soon become a water stress country from water scarcity state. It demands appropriate measures to treat water as a precious wealth and to use it carefully so that coming generations will not have to face the music. One of those measures is to clean the wastewater so that water scarcity could be eliminated. This paper examines the wastewater treatment in Islamic perspective. In this research, the viewpoints of four Imams regarding water purification have been elaborated and suggestion have been enlightened in brief.


Author(s):  
Onur Tutulmaz

The recent developments bring US to a major natural gas and oil producer position. The attempts in last 20 years to bring new horizontal drilling and hydraulic fracturing technologies together have developed a success in shale gas and oil production in US; the production volumes has reached to a position to redefine the market. Last estimations are bringing more information about the shale capacities of the major basins of the world. However, the estimates are based on a wide range of assumptions and consequently their results vary in a large scale. In any case, these developments have crucial economic, political and geopolitical consequences on the energy market, petroleum producer and consumer countries and regions. Despite the wide range of ambiguity of the estimated size of the resources, the estimations show US and North America has one of the biggest potential, already turning technology into the giant production numbers. Some of the estimations allege so big numbers can even mean to a new world order. The asymmetric nature of the potential, can also be said, increases some of the expected impacts too. In this study, basically, we want to supply an initial solid and economical evaluation to this ambiguity. We are trying to shape a frame for the new energy potential and to put it in a place in the current practice of the world. Secondly, in this context, we are underlying here some of the possible economic and geopolitical consequences each of which can constitute a subject of deeper study.


2014 ◽  
Vol 3 (4) ◽  
pp. 15
Author(s):  
Onur TUTULMAZ

The recent developments bring US to a leading natural gas and oil producer position. The attempts in last 20 years to bring new horizontal drilling and hydraulic fracturing technologies together have developed a success in shale gas and oil production in US; the production volumes has reached to a position to redefine the market. Last estimations are bringing more information about the shale capacities of the major basins of the world. However, the estimates are based on a wide range of assumptions and consequently their results vary in a large scale. In any case, these developments have crucial economic, political and geopolitical consequences on the energy market, petroleum producer and consumer countries and regions. Despite the wide range of ambiguity of the estimated size of the resources, the estimations show US and North America has one of the biggest potential, already turning technology into the giant production numbers. Some of the estimations allege so big numbers can even mean to a new world order. The asymmetric nature of the potential, can also be said, increases some of the expected impacts too. In this study, basically, we want to supply an initial solid and economical evaluation to this ambiguity. We are trying to shape a frame for the new energy potential and to put it in a place in the current practice of the world. Secondly, in this context, we are underlying here some of the possible economic and geopolitical consequences each of which can constitute a subject of deeper study.


2021 ◽  
Vol 12 (5) ◽  
pp. 5821-5835

Currently, most advanced technologies employ nanomaterials due to the modern tailor-made properties these materials exhibit compared to their bulk counterparts. Nanomaterials have attracted researchers around the globe in the last few decades due to their unusual properties due to the presence of a greater number of carriers at the surface, which affects the chemical and physical properties of these materials. Ensuring pure drinking water for domestic purposes is the biggest challenge in current times. Industrialization is increasing with time due to human needs. The extensive use of fertilizers to enhance agricultural productivity has hazardous effects on the ecosystem. Water pollution will significantly impact living beings on the land and aquatic beings, followed by terrestrial, aerial flora, and fauna. In a world full of technologies, there are many methods to purify water (water filters, RO purifiers, etc.). Still, nanotechnology plays a vital part in purifying water on a large scale. Nanotechnology methods came up with new materials and analytical techniques that can treat the by-products that are toxic to the environment. Heterogeneous photocatalysis used with metal oxide nanostructures causes no harm to the ecosystem. Nanomembranes and Nanostructures will play an active role by acting as a trap for many Nano pollutants. This review presents nano cellulose, nanocarbon tubes, and nanomembranes used in water purification and analytical techniques by addressing the current economic water purification techniques.


2020 ◽  
Vol 10 (2) ◽  
pp. 103-106
Author(s):  
ASTEMIR ZHURTOV ◽  

Cruel and inhumane acts that harm human life and health, as well as humiliate the dignity, are prohibited in most countries of the world, and Russia is no exception in this issue. The article presents an analysis of the institution of responsibility for torture in the Russian Federation. The author comes to the conclusion that the current criminal law of Russia superficially and fragmentally regulates liability for torture, in connection with which the author formulated the proposals to define such act as an independent crime. In the frame of modern globalization, the world community pays special attention to the protection of human rights, in connection with which large-scale international standards have been created a long time ago. The Universal Declaration of Human Rights and other international acts enshrine prohibitions of cruel and inhumane acts that harm human life and health, as well as degrade the dignity.Considering the historical experience of the past, these standards focus on the prohibition of any kind of torture, regardless of the purpose of their implementation.


2016 ◽  
pp. 501-504
Author(s):  
Sergey Gudoshnikov

Beet pulp remaining after the extraction of sugar from beet is a good source of highly digestible fibre and energy used for animal feeding. Beet pulp is mostly used domestically but about 15% of global dried beet pulp production is exported to the world market. Although pulp have only little value as compared to sugar, sales of it abroad help generate additional income for the sugar industry with relatively low overheads. In contrast to sugar where import markets are protected by tariffs and non-tariff barriers while export volumes can be heavily regulated by governments, these restrictions are much less extensive for beet pulp trade. This article reviews recent developments in the world trade in beet pulp. The context of the article is based on the ISO study “World Trade of Molasses and Beet Pulp” MECAS(16)06.


2017 ◽  
Vol 40 (3) ◽  
pp. 295-310
Author(s):  
Sabine Wilke

Every late spring since 1951, the Wiener Festwochen bring performers from around the world to Vienna for an opportunity to share recent developments in performance styles and present them to a Viennese public that seems to be increasingly open to experimentation. These festival weeks solidify a specific form of Viennese self-understanding and self-representation as a culture that is rooted in performance. This essay seeks to link two recent Austrian performances—one of them was part of the Wiener Festwochen in 2016, the other was staged in downtown Linz during the past few years—to this Austrian and specifically Viennese culture of performance by reading them as contemporary articulations of a tradition of radical performance art that can be traced back to the Viennese Actionism of the sixties and later feminist articulations in the seventies and eighties. They play on the dramatic effect of these actions, specifically their joy in cruelty, chaos, and orgiastic intoxication, by staging regressions and thus making visible what has been dammed up and repressed in contemporary society.1 Just as their historical models, these two performances merge the performing and the fine arts and they highlight provocative, controversial, and, at times, violent content. But they do it in an interspecies context that adds an entire layer of complexity to the project of societal and cultural critique.


2021 ◽  
Vol 06 ◽  
Author(s):  
Ayekpam Chandralekha Devi ◽  
G. K. Hamsavi ◽  
Simran Sahota ◽  
Rochak Mittal ◽  
Hrishikesh A. Tavanandi ◽  
...  

Abstract: Algae (both micro and macro) have gained huge attention in the recent past for their high commercial value products. They are the source of various biomolecules of commercial applications ranging from nutraceuticals to fuels. Phycobiliproteins are one such high value low volume compounds which are mainly obtained from micro and macro algae. In order to tap the bioresource, a significant amount of work has been carried out for large scale production of algal biomass. However, work on downstream processing aspects of phycobiliproteins (PBPs) from algae is scarce, especially in case of macroalgae. There are several difficulties in cell wall disruption of both micro and macro algae because of their cell wall structure and compositions. At the same time, there are several challenges in the purification of phycobiliproteins. The current review article focuses on the recent developments in downstream processing of phycobiliproteins (mainly phycocyanins and phycoerythrins) from micro and macroalgae. The current status, the recent advancements and potential technologies (that are under development) are summarised in this review article besides providing future directions for the present research area.


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