نتایج جستجو برای: modified activated carbon

تعداد نتایج: 727793  

Journal: :environmental studies of persian gulf 2015
mehrorang ghaedi mohamad nickoosiar jahromi mohamad sajedi hassan mousavi

this study focus on the preparation of two supports including activated carbon derived from medlar and palladium nanoparticles loaded on activated carbon (pd-np-ac). subsequently, both adsorbent modified with a novel schiff base chelating agent and their potential applicability for determination of trace amounts of metal ions from aqueous solution has been investigated. the method is based on c...

Journal: :journal of agricultural science and technology 2015
r. rostamian m. heidarpour s. f. mousavi m. afyuni

biochar and activated carbon, as carbon-rich porous materials, have wide environmental applications. in the present research, rice husk (rh) was used for preparation of biochar at 400, 600, and 800 °c under simple pyrolysis, physically-activated carbon with water steam, chemically-activated carbon with potassium hydroxide (koh), and physiochemically-activated carbon with koh and steam. physical...

Journal: :journal of physical & theoretical chemistry 2012
s. javad hosseini h. aghaie m. ghaedi

carbon activated powdered was prepared from activated carbon derived from olive stone. then byusing the surface methodology, many parameters such as ph, furnace temperature (t), acid ratio,time of activation that affect on the qualities prepared activated carbon produced and its efficiencywere investigated. in addition, the adsorption of congo red onto the activated olive stone carbonactive was...

A Feizizadeh, H Abdollahzadeh, M* Fazlzadeh, Sh Afshin, Y Rashtbari, Y* Poureshgh,

Background & objective: The presence of natural organic matter in water sources creates various problems, especially in common water treatment process. These compounds cause unfavorable taste and odor in water and are among the most important precursors of water disinfection by-products. This study was carried out to evaluate the efficiency of activated carbon (AC) and activated carbon modified...

Background and Aim: Activated carbon is a most common adsorbent. By emerging of new technologies, the activated carbon production methods need to be improved. The aim of this study was producing powdered activated carbon from Peganum Harmala seed under ultrasound waves for activation and its application for chromium removal from aqueous solutions. Materials and Methods: This experimental stu...

اعظم, کمال, تبریزی, اکرم, جعفری زاوه, مصطفی, شیرخانلو, حمید, قاسم خانی, مهدی, گلبابایی, فریده,

Introduction: Volatile organic compounds such as xylene are one of the main air pollutants. Adsorption method are of the most common methods used in the control of volatile organic compounds. The aim of this study was to investigate the xylene removal from air through nano activated carbon adsorbent in comparison with NIOSH approved carbon adsorbent.   Material and Method: Xylene adsorption...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2003
sayed mahdi golabi mirzazadeh jalil

a thin film of epinephrine (ep) was electrochemically deposited on the surface of glassy carbon electrode previously activated in nahco3 solution. the cyclic voltammograms of the modified electrode indicate that the surface confined ep are strongly dependent on the solution ph, as expected for quinone/hydroquinone functionalities. the ep-modified glassy carbon electrode exhibited catalytic acti...

Ah Karimi M. Reza. Shishehbore Mohammad Saber Tehrani Mohammad. A. Shirgholami Navid Nasirizadeh

A new hydroxylamine sensor has been fabricated by immobilizing oxadiazol denvative at the surface ol aglassy carbon electrode (GCE) modified by multi-wall carbon nanotube (MIVCNT). The adsorbed thin Illms oroxadiazol derivative on the MWCNT modified GCE show a pair of peaks with surface confined characierisnus.The oxadiazol derivative MWCNI (OMWCNT) modified GCE shows highly catalytic activity ...

Journal: :international journal of environmental research 0

semi-aerobic leachate is characterized by organic matter (cod, bod) which is relatively low in concentration and difficult to biodegrade. in conventional treatment systems, the low biodegradability is attributed to partial stabilization of leachate at the landfill. biological treatment of leachate in malaysia is not well established and any important data for the treatment process is not availa...

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