نتایج جستجو برای: pumice powder
تعداد نتایج: 47653 فیلتر نتایج به سال:
In this work, removal of C. I. Acid Red 14 was investigated by Pumice stone as a low cost adsorbent. Various parameters such as initial dye solution, contact time and pH were studied. Removal of dye were increased by increasing of contact time and initial dye solution and deceased by increasing of pH. Three isotherm models were studied. Linear and non-linear regression analyses were used fo...
Damavand is a large dormant stratovolcano in the Alborz Mountains of northern Iran located in one of the most populous provinces, which could be adversely affected by tephra fall from Damavand. The youngest known eruption is a lava flow on the western flanks with an age of 7.3 ka. The volcanic products are predominantly porphyritic trachyandesite. Three major young pumice deposits, named here a...
Lack of knowledge on soil geotechnical properties can cause many problems in the construction and maintenance of irrigation and drainage networks. In general, all of unconventional soils such as gypsiferous soils can cause some problems to irrigation canals. Some studies have been conducted on a variety of problematic soils, but still there is a need for more research activities and field studi...
Abstract In this study, pumice from different regions of Turkey (Diyarbakir, Southeast and Bitlis, East Turkey) has been supplied used as supporting material for nanoscale zero-valent iron (nFe 0 ). Native Bitlis (NBP)-supported (BP-nFe ) native Diyarbakir (NDP)-supported zero-value (DP-nFe were synthesized under the same conditions. (NDP, NBP) pumice-supported nFe BP-nFe adsorbents morphologic...
Background and Objective: Chemical dyes used in the textile wastewater besides having harmful effect on the environment, have carcinogenic and mutagenic effects. Methylene blue has harmful effect on living organisms in short period of exposure. The goal of this study was optimization of the catalytic ozonation process by pumice modified by magnesium nitrate in removal of methylene blue dye ba...
Pumice quarried by LAVA MINING AND QUARRYING SA from Yali Island, Dodecanese, is used in domestic and foreign markets mainly as concrete lightweight aggregate, masonry unit constituents, road substrate, loose soil stabilization. It a porous natural volcanic rock with low density, thermal noise transmission, the highest strength among all or artificial materials of mineral origin. Nowadays, pumi...
In this paper, the adsorption of Congo red dye from an aqueous solution using chitosan-coated pumice (CCP) has been studied. The abundant natural Irind mine (Republic Armenia) was successfully activated by acid activation method and modified with chitosan. adsorbent applied as a low-cost, environmentally-friendly for removal solution. samples were characterized Fourier-transform infrared spectr...
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