Recent studies in environmental applications of ultrasoundA paper submitted to the Journal of Environmental Engineering and Science.

2009 ◽  
Vol 36 (11) ◽  
pp. 1849-1858 ◽  
Author(s):  
Thuy Duong Pham ◽  
Reena Amatya Shrestha ◽  
Jurate Virkutyte ◽  
Mika Sillanpää
Keyword(s):  
Environmental Analysis ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Environmental Engineering ◽  
Toxic Chemicals ◽  
Environmental Applications ◽  
Air Purification ◽  
Sediment Remediation ◽  
Environmental Technology ◽  
Sludge Treatment

As a young, new, and rapidly growing science, the applications of ultrasound in environmental technology hold a promising future. Compared with conventional methods, ultrasonication can bring several benefits such as environmentally friendly (no toxic chemicals are used or produced), low cost, and compact (allowing on-site treatment). Beside an overview on ultrasonic background, this paper summarizes main findings and innovations of recent studies that used ultrasound in environmental analysis, water and sludge treatment, soil and sediment remediation, and air purification.

scholarly journals Application and Development of an Environmentally Friendly Blast Hole Plug for Underground Coal Mines

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Donghui Yang ◽  
Yixin Zhao ◽  
Zhangxuan Ning ◽  
Zhaoheng Lv ◽  
Huafeng Luo
Keyword(s):  
Split Hopkinson Pressure Bar ◽  
Low Cost ◽  
Blast Hole ◽  
Environmentally Friendly ◽  
Test System ◽  
Industrial Test ◽  
Labor Intensity ◽  
Rock Blasting ◽  
Hopkinson Pressure Bar ◽  
The Impact

Drilling and blasting technology is one of the main methods for pressure relief in deep mining. The traditional method for blasting hole blockage with clay stemming has many problems, which include a large volume of transportation, excess loading time, and high labor intensity. An environmentally friendly blast hole plug was designed and developed. This method is cheap, closely blocks the hole, is quickly loaded, and is convenient for transportation. The impact test on the plug was carried out using an improved split Hopkinson pressure bar test system, and the industrial test was carried out in underground tunnel of coal mine. The tests results showed that, compared with clay stemming, the new method proposed in this paper could prolong the action time of the detonation gas, prevent premature detonation gas emissions, reduce the unit consumption of explosives, improve the utilization ratio, reduce the labor intensity of workers, and improve the effect of rock blasting with low cost of rock breaking.

LED Light Sources in Organic Synthesis: An Entry to A Novel Approach

2021 ◽  
Vol 18 ◽  
Author(s):  
Aparna Das
Keyword(s):  
Organic Compounds ◽  
Organic Synthesis ◽  
Photochemical Reaction ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Photochemical Reactions ◽  
Light Sources ◽  
Blue Led ◽  
Oxidation Reduction ◽  
Novel Approach

: In recent years, photocatalytic technology has shown great potential as a low-cost, environmentally friendly, and sustainable technology. Compared to other light sources in photochemical reaction, LEDs have advantages in terms of efficiency, power, compatibility, and environmentally-friendly nature. This review highlights the most recent advances in LED-induced photochemical reactions. The effect of white and blue LEDs in reactions such as oxidation, reduction, cycloaddition, isomerization, and sensitization is discussed in detail. No other reviews have been published on the importance of white and blue LED sources in the photocatalysis of organic compounds. Considering all the facts, this review is highly significant and timely.

scholarly journals Thermal, Economic and Environmental Analysis of a Low-Cost House in Alice, South Africa

2017 ◽  
Vol 9 (3) ◽  
pp. 425 ◽  
Author(s):  
Overen Kelvin ◽  
Meyer Edson ◽  
Makaka Golden
Keyword(s):  
South Africa ◽  
Environmental Analysis ◽  
Low Cost

scholarly journals Synthesis of Novel ZnO Having Cauliflower Morphology for Photocatalytic Degradation Study

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Dipak Nipane ◽  
S. R. Thakare ◽  
N. T. Khati
Keyword(s):  
Photocatalytic Degradation ◽  
Material Properties ◽  
Low Cost ◽  
Environmental Applications ◽  
Zno Nanowire ◽  
Excellent Performance ◽  
Degradation Study ◽  
Unique Material ◽  
Photocatalytic Applications

ZnO nanowire morphology has been widely studied due to its unique material properties and excellent performance in electronics, optics, and photonic. Recently, photocatalytic applications of ZnO nanowire are creating an increasing interest in the environmental applications. This paper presents a low-cost and ecofriendly synthesis of ZnO with cauliflower morphology and its effectiveness in photocatalysis.

A low cost, low energy, environmentally friendly process for producing high-purity boron carbide

2019 ◽  
Vol 45 (3) ◽  
pp. 3101-3110 ◽  
Author(s):  
Shuaibo Gao ◽  
Xin Li ◽  
Shuai Wang ◽  
Pengfei Xing ◽  
Jian kong ◽  
...  
Keyword(s):  
Boron Carbide ◽  
High Purity ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Low Energy ◽  
Environmentally Friendly Process

scholarly journals Environmental technology education in Portugal: analysis and perspectives

2000 ◽  
Vol 41 (2) ◽  
pp. 23-29 ◽  
Author(s):  
A.G. Brito ◽  
L.F. Melo ◽  
F. Santana
Keyword(s):  
Technology Education ◽  
Environmental Engineering ◽  
Current Status ◽  
Engineering Profession ◽  
Present Communication ◽  
Environmental Technology

The scope of the present communication is the current status of environmental engineering in Portugal. The different approaches concerning the environmental engineering courses available at undergraduate levels as well as some post-graduation studies are described. Furthermore, an analysis based on strengths, weakness, opportunities and trend issues regarding the environmental engineering profession in Portugal is presented.

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