نتایج جستجو برای: analcime
تعداد نتایج: 136 فیلتر نتایج به سال:
The north western part of volcano-sedimentary complex of Davazdah-Emam mountain in north of Central Iran is located about 135 km SE Tehran. The Eocene to Oligocene volcanic rocks and dikes of intermediate to mainly basic of complex under the influence of hydrothermal fluids, probably associated with the involvement of meteoric water, experienced different degrees of alteration. The alteration o...
The Kongsberg and Bamble lithotectonic domains of SE-Norway are known as classical Precambrian high-grade metamorphic terrains. area has undergone extensive metasomatism with formation albitites scapolite-rich rocks numbers previously economically important deposits including the Silver Modum Cobalt mines. We demonstrate here that central part domain (Kragerø area) locally developed low-grade m...
the capacity of natural zeolites to absorb anionic pollutants from water is limited. this limitation can be overcome by modifying the surface of the minerals with organic cations. in this research, natural zeolite, analcime was used for removing the nitrate and nitrite impurities from aqueous solutions. the surface of the zeolite was modified by tetramethylammonium and tetraethylammonium ions t...
In this study, organic amines were used to modify zeolite NaA and analcime synthesized using fly ash iron tailing slag as raw materials, respectively, the adsorption properties of modified zeolites toward CO2 determined. We found that when tetraethylenepentamine (TEPA) was used, had highest nitrogen content. The capacity for 4.02 mmol/g 1.16 temperature 70 °C flow rate 50 mL/min. According isot...
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