نتایج جستجو برای: electrocoagulation

تعداد نتایج: 2170  

Journal: :jundishapur journal of health sciences 0
mansooreh dehghani department of environmental health, research center for health sciences, school of health, shiraz university of medical sciences, shiraz, ir iran; mansooreh dehghani, department of environmental health, research center for health sciences, school of health, shiraz university of medical sciences, shiraz, ir iran. tel: +98-9164490350, fax: +98-7137260225 mehdi hoseini department of environmental health engineering, student research committee, school of health, shiraz university of medical sciences, shiraz, ir iran mohammad-kazem fathi fath-aabaadi department of environmental health engineering, student research committee, school of health, shiraz university of medical sciences, shiraz, ir iran zahra elhamiyan department of environmental health engineering, student research committee, school of health, shiraz university of medical sciences, shiraz, ir iran narges shamsedini department of environmental health engineering, student research committee, school of health, shiraz university of medical sciences, shiraz, ir iran masoud ghanbarian department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran

conclusions in conclusion, the electrocoagulation process can be used for removing nitrate from water resources because of high efficiency, simplicity, and relatively low cost. results results of the present study showed that the removal efficiency was increased from 27% to 86% as ph increased from 3 to 11 at the optimal condition of 30 v and 75 min operation time. moreover, by increasing the r...

2012
Edris Bazrafshan Ferdos Kord Mostafapour Mehdi Farzadkia Kamal Aldin Ownagh Amir Hossein Mahvi

Slaughterhouse wastewater contains various and high amounts of organic matter (e.g., proteins, blood, fat and lard). In order to produce an effluent suitable for stream discharge, chemical coagulation and electrocoagulation techniques have been particularly explored at the laboratory pilot scale for organic compounds removal from slaughterhouse effluent. The purpose of this work was to investig...

Journal: :Gut 1991
J D Harrison D L Morris

The value of the bipolar electrocoagulator in the haemostasis of bleeding ulcers is controversial. We have therefore investigated the effect of different coagulation times on vessel weld strength achieved by the bipolar device. Welds were then made in vessels of known diameter using a standard 10F endoscopic haemostatic probe at coagulation times of two and 20 seconds. The intravascular tempera...

Journal: :Journal of environmental management 2009
Mohammad M Emamjomeh Muttucumaru Sivakumar

Long-term consumption of water containing excessive fluoride can lead to fluorosis of the teeth and bones. Electrocoagulation (EC) is an electrochemical technique, in which a variety of unwanted dissolved particles and suspended matter can be effectively removed from an aqueous solution by electrolysis. Continuous flow experiments with monopolar aluminium electrodes for fluoride removal were un...

Journal: :Journal of research in health sciences 2008
Ar Rahmani

BACKGROUND Electrocoagulation is a technique involving the electrolytic addition of coagulating metal ions directly from sacrificial electrodes. These ions coagulate with turbidity agents in the water, in a similar manner to the addition of coagulating chemicals such as alum and ferric chloride, and allow the easier removal of the pollutants. Purpose of this study was to conduct experimental in...

2013
Eugenia P. Ramirez

There are two major ways to treat wastewater; it is either through chemical or non-chemical treatment. Both improve water quality, but do not make water safe for domestic use. Most firms or companies use coagulation treatment or chemical treatment. But the problem for this treatment is the selection of the best chemical to be used; it is expensive and frequent dosage adjustments are required to...

2011
Hideyuki Watanabe Uma Maheswari Rajagopalan Yu Nakamichi Kei M. Igarashi Violeta Dimitrova Madjarova Hirofumi Kadono Manabu Tanifuji

Here, we report in vivo 3-D visualization of the layered organization of a rat olfactory bulb (OB) by a swept source optical coherence tomography (SS-OCT). The SS-OCT operates at a wavelength of 1334 nm with respective theoretical depth and lateral resolutions of 6.7 μm and 15.4 μm in air and hence it is possible to get a 3D structural map of OB in vivo at the micron level resolution with milli...

2014
Thirugnanasambandham Karichappan Sivakumar Venkatachalam Prakash Maran Jeganathan

BACKGROUND Discharge of grey wastewater into the ecological system causes the negative impact effect on receiving water bodies. METHODS In this present study, electrocoagulation process (EC) was investigated to treat grey wastewater under different operating conditions such as initial pH (4-8), current density (10-30 mA/cm2), electrode distance (4-6 cm) and electrolysis time (5-25 min) by usi...

Journal: :Journal of hazardous materials 2011
Subramanyan Vasudevan Jothinathan Lakshmi Ganapathy Sozhan

In practice, direct current (DC) is used in an electrocoagulation processes. In this case, an impermeable oxide layer may form on the cathode as well as corrosion formation on the anode due to oxidation. This prevents the effective current transfer between the anode and cathode, so the efficiency of electrocoagulation processes declines. These disadvantages of DC have been diminished by adoptin...

2013
Xiangyi Zheng Yiwei Lin Bin Chen Xianyong Zhou Xiaofeng Zhou Yuehong Shen Liping Xie

BACKGROUND Arteriovesical fistulas are extremely rare. Only eleven cases were previously reported in the literature. They can occur iatrogenically, traumatically or spontaneously. CASE PRESENTATION We report an unusual case of a 62-year-old woman with arteriovesical fistula that developed fatal hematuria after transurethral electrocoagulation. Computed tomography (CT) and selective angiograph...

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