نتایج جستجو برای: contact time

تعداد نتایج: 2021711  

ژورنال: طلوع بهداشت یزد 2015
احرامپوش, محمد حسن, علی بیگی, امیر ناصر, ملکوتیان, محمد,

Introduction: Carbon nano tubes are products which have the ability to remove some contaminants from aqueous solutions and wastewater. The efficiency of these products depends on different factors such as PH, concentration, contact, mixing time, etc. in this research the efficiency of oxidized multi- walled carbon nanotubes is studied. Methods: The study is Experimental. The multi-walled carbon...

The present study was carried out to investigate the potential of carboxylate group functionalized Multi-walled carbon nanotubes (MWCNT−COOH) adsorbent for the removal of Methyl orange (MO) textile dye from aqueous solutions. The effects of pH, shaking time and temperature on adsorption capacity were studied; the contact time to obtain equilibrium at 298 ˚K was fixed at 25 min. The effect of te...

Journal: :jentashapir journal of health research 0
mansooreh dehghani department of environmental health, research center for health sciences, school of health, shiraz university of medical sciences, shiraz, ir iran samaneh shahsavani department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, ir iran; department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, ir iran. tel: +98-9385322369, fax: +98-7137260225 narges shamsedini department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, ir iran mohammad reza javaheri department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, ir iran

conclusions it was shown that the removal efficiency of nitrate was directly proportional to the amount of chaff, temperature, and contact time but inversely to the ph. this study showed that nitrate removal by chaff is a promising technique. results the result of this study revealed that chaff as an absorbent could remove nitrate from solutions, and the efficiency of adsorption increased as co...

Ali Jafari, Ali Mirza-Heidari Bahram Kamarehei Gholamreza Goudarzi, Hassan Basiri, Heshmatollah Nourmoradi Mehdi Jourvand Mohammad Javad Mohammadi Sedigheh Saeedi, Seyed Mohammad Daryanoosh, Shahram Sadeghi Yusef Omidi-Khaniabadi,

In this batch study, montmorillonite was modified by a cationic surfactant [hexadecyltrimethylammonium bromide (HDTMA-MMT)] and used as sorbent to remove bromocresol green (BCG) from aqueous solutions. The effect of several factors such as surfactant loading rate onto the clay, contact time, pH, adsorbent dosage, dye concentration, and ion strength were investigated on the sorption. The equilib...

A superhydrophobic aluminum surface was fabricated through an enhanced low-cost approach and the effects of several relevant factors on static contact angle and sliding angle were investigated. First, the operating parameters including the etching time as well as the reaction time and temperature were varied. Next, the so-called chemical factors including three different fatty acids and five di...

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