PROGRESS IN HIGH EFFICIENCY UV LED RESEARCH FOR REAGENTLESS BIOAGENT DETECTION AND WATER PURIFICATION

2008 ◽  
pp. 437-443
Author(s):  
MEREDITH L. REED ◽  
GREGORY A. GARRETT ◽  
ANAND V. SAMPATH ◽  
PAUL H. SHEN ◽  
CHARLES J. COLLINS ◽  
...  
Keyword(s):  
Water Purification ◽  
High Efficiency ◽  
Uv Led

PROGRESS IN HIGH EFFICIENCY UV LED RESEARCH FOR REAGENTLESS BIOAGENT DETECTION AND WATER PURIFICATION

2008 ◽  
Vol 18 (01) ◽  
pp. 179-185 ◽  
Author(s):  
MEREDITH L. REED ◽  
GREGORY A. GARRETT ◽  
ANAND V. SAMPATH ◽  
PAUL H. SHEN ◽  
CHARLES J. COLLINS ◽  
...  
Keyword(s):  
Water Purification ◽  
High Efficiency ◽  
Time Resolved ◽  
Current Time ◽  
Light Emitting ◽  
Uv Led ◽  
Photoluminescence Studies ◽  
Ultraviolet Light Emitting Diodes ◽  
Time Resolved Photoluminescence

We present material and device characterization of 280 nm semiconductor ultraviolet light emitting diodes. These devices exhibit low series resistance, wavelength stability with increasing current, and have a half-life in excess of 570hrs, depending upon the injection current. Time-resolved photoluminescence studies of these materials prior to fabrication have been correlated with the device performance. We also discuss the potential for use in water purification.

Bio-inspired vertically aligned polyaniline nanofiber layers enabling extremely high-efficiency solar membrane distillation for water purification

2021 ◽  
Author(s):  
Yubing Peng ◽  
Yunjie Wang ◽  
Wenwei Li ◽  
Jian Jin
Keyword(s):  
Solar Energy ◽  
Water Purification ◽  
High Efficiency ◽  
Membrane Distillation ◽  
Water Efficiency ◽  
Microfiltration Membrane ◽  
Vertically Aligned ◽  
Polyaniline Nanofiber

A bio-inspired PANI nanofiber layer was fabricated on the surface of a hydrophobic PVDF microfiltration membrane for solar-driven distillation. This membrane possesses high solar energy-to-collected water efficiency for freshwater production under one sun irradiation.

Experimental estimation of the efficiency of removing residual amounts of antibiotics and steroid hormones from water with home water purification systems

2021 ◽  
pp. 9-15
Author(s):  
Ю.А. Ремизова ◽  
А.П. Голованова ◽  
Д.А. Рудакова ◽  
А.Г. Митилинеос
Keyword(s):  
Water Purification ◽  
High Efficiency ◽  
Tap Water ◽  
Pharmaceutical Compounds ◽  
Model Solution ◽  
Capital Costs ◽  
Water Purification System ◽  
Purification System ◽  
Household Water ◽  
Purification Methods

Для удаления остаточных количеств фармацевтических соединений, присутствующих в питьевой воде, на всех этапах водоподготовки могут применяться разнообразные способы очистки, основанные на различных физико-химических принципах. В работе приведены результаты экспериментального исследования эффективности удаления с помощью бытовой стационарной системы водоочистки остаточных количеств фармацевтических препаратов – антибиотика левомицетина (хлорамфеникола) и стероидного гормона эстрона – из модельного раствора, приготовленного на основе водопроводной воды с добавлением лекарственных препаратов. Показано, что бытовая система водоочистки обладает способностью существенно снижать остаточные концентрации фармацевтических препаратов левомицетина и эстрона на всем протяжении заявленного производителем ресурса. В секторе бытовой водоочистки установки адсорбционного типа по-прежнему остаются наиболее востребованным типом водоочистных систем, обеспечивающих высокую эффективность удаления различных загрязнителей при минимальных капитальных затратах. To remove residual amounts of pharmaceutical compounds present in drinking water, a variety of purification methods based on various physicochemical principles can be used at all stages of water treatment. The paper presents the results of an experimental study of the efficiency of removing residual concentrations of pharmaceuticals – laevomycetin antibiotic (chloramphenicol) and estrone steroid hormone – from a model solution prepared on the basis of tap water with the addition of drugs, using a home fixed water purification system. It is shown that the home water purification system provides for the significant reduction of residual concentrations of chloramphenicol and estrone throughout the service life declared by the manufacturer. In the household water purification sector, adsorption-type units are still the most in-demand type of water purification systems that provide for the high efficiency in removing various pollutants with minimal capital costs.

Suppression of phase separation of AlGaN during lateral growth and fabrication of high-efficiency UV-LED on optimized AlGaN

2002 ◽  
Vol 237-239 ◽  
pp. 951-955 ◽  
Author(s):  
Motoaki Iwaya ◽  
Shinji Terao ◽  
Tomoaki Sano ◽  
Tsutomu Ukai ◽  
Ryo Nakamura ◽  
...  
Keyword(s):  
Phase Separation ◽  
High Efficiency ◽  
Lateral Growth ◽  
Uv Led

scholarly journals The Biochar Derived from Carp for High‐Efficiency Solar Steam Generation and Water Purification (Global Challenges 1/2022)

2022 ◽  
Vol 6 (1) ◽  
pp. 2270011
Author(s):  
Hongtao Qiao ◽  
Baowei Zhao ◽  
Xidong Suo ◽  
Xiaoming Xie ◽  
Lifang Dang ◽  
...  
Keyword(s):  
Water Purification ◽  
High Efficiency ◽  
Steam Generation ◽  
Global Challenges ◽  
Solar Steam Generation

High-efficiency 350 nm-band quaternary InAlGaN-based UV-LED on GaN/sapphire template

2005 ◽  
Vol 2 (7) ◽  
pp. 2899-2902 ◽  
Author(s):  
Hideki Hirayama ◽  
Takashi Kyono ◽  
Katsushi Akita ◽  
Takao Nakamura ◽  
Koji Ishibashi
Keyword(s):  
High Efficiency ◽  
Uv Led

The Technology of High Efficiency Water Purification

2014 ◽  
Vol 1052 ◽  
pp. 574-577
Author(s):  
Wan Jun Fu
Keyword(s):  
Water Purification ◽  
Power Plants ◽  
High Efficiency ◽  
Oil Field ◽  
Water Filtration ◽  
Technical Equipment ◽  
Filtration Equipment ◽  
Reduction Efficiency ◽  
Equipment Development ◽  
Efficiency Comparison

A new promising water purification technology, soft fiber wadding filter, was introduced in this article. The technology has the advantages of energy saving and emission reduction efficiency greatly, is currently the most advanced water purification. This paper explains the structure of the technical equipment, tell the filtration principle, provides the filter parameters of practical efficiency, comparison. The technology is mainly used in power plants, metallurgy, chemical industry, oil field water treatment engineering, and achieved satisfactory results. Significance of the research on the model of water filtration equipment development and filtration theory is grearly.

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