نتایج جستجو برای: sepiolite
تعداد نتایج: 436 فیلتر نتایج به سال:
introduction: pollution of soil and water environment by release of heavy metals is of great concerns of the last decades. sorption of heavy metals by low cost materials is considered as an inexpensive and efficient method used for removal of heavy metals from soil-water systems. the presence of different ligands with various complexing abilities can change the sorption properties of heavy meta...
اثرات پستی و بلندی و آبیاری بر تکامل خاکها و تنوع کانیهای رسی در برخی از خاکهای گچی استان خوزستان
This study was done to evaluate the effect of topography, water table, and irrigation on gypsc soil development and clay mineral diversity in Ram-Hormuz Plain, Khuzestan Province. To localize, 10 profiles in this region that covered all purpose irrigation and topography situation were described. The results showed that the soils could be classified in Entisols, Inceptisols and Aridisols orders....
Mining, industrial and agricultural activities can result in considerable soil pollution by heavy metals (HMs). One of the methods to control this pollution is application of adsorbent minerals. The purpose of this study was to compare the effects of adsorbent minerals (bentonite, zeolite and sepiolite) on transfer of some heavy metals (i.e., Pb, Zn and Cd) from soil to tissues of sunflower (He...
Syntheses of analogues historical indigo and Maya blue pigments using an inquiry-based approach are presented. Derivatives were synthesized (in particular Tyrian purple) used as vat dyes for dyeing cotton or wool fabrics mixed with a sepiolite clay to create new hues colors blues green chemistry hydrothermal microwave synthesis. The allows very quick preparation analogue (typically 1 h) while i...
Constructed wetlands, as natural sewage treatment ecosystems, have been widely used in the fields of rural domestic and plant tailwater treatment. However, synchronous removal phosphorus most constructed wetlands is not ideal. This study aimed to prepare thermally modified sepiolites with high adsorption capacities design a wetland based on them. Thermal modification was adopted enhance capacit...
Acid and thermal treated sepiolite was organophilized by cationic exchange with several alkylammonium cations (octylammonium, hexadecylammonium, tetradecyltrimethylammonium, hexadecyltrimethylammonium). The adsorption capacity of BTEX from aqueous solutions evaluated through the isotherms performed in batch. results were analysed using three isotherm models: Freundlich, Langmuir Dubinin-Radushk...
Abstract Clay minerals are effective adsorbents used for the remediation of toxic heavy metals from wastewater due to their large surface areas and great cation-exchange capacities. In this study, removal lead ions aqueous solutions via adsorption was investigated using raw iron-modified Turkish sepiolite. The aim study examine effects modification environmental conditions on sorptive propertie...
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