Removal of selected anions by raw halloysite and smectite clay
نویسندگان
چکیده
منابع مشابه
Thermodynamics of nitroaromatic compound adsorption from water by smectite clay.
Nitroaromatic compounds enter the environment through their use as explosives, pesticides, solvents, and synthetic intermediates in the manufacturing of dyes, perfumes, and drugs. Recent studies have found that many nitroaromatic compounds are strongly retained by smectites, especially K+-saturated smectites. Sorption occurs when nitroaromatic compounds replace water associated with the clay an...
متن کاملEffective Removal of Lead Ions from Aqueous Solution Using Nano Illite/Smectite Clay: Isotherm, Kinetic, and Thermodynamic Modeling of Adsorption
Illite-smectite clay is a new mixed mineral of illite and montmorillonite. The ability of nano illite/smectite clay to remove Pb(II) from slightly polluted aqueous solutions has been investigated. The effects of pH, contact time, initial concentration of Pb(II), nano illite/smectite clay dosage, and temperature on the adsorption process were studied. The nano illite/smectite clay was characteri...
متن کاملFormation of metal clusters in halloysite clay nanotubes
We developed ceramic core-shell materials based on abundant halloysite clay nanotubes with enhanced heavy metal ions loading through Schiff base binding. These clay tubes are formed by rolling alumosilicate sheets and have diameter of c.50 nm, a lumen of 15 nm and length ~1 μm. This allowed for synthesis of metal nanoparticles at the selected position: (1) on the outer surface seeding 3-5 nm me...
متن کاملInfrared reflection absorption spectroscopy study of smectite clay monolayers
Infrared reflection absorption spectroscopy (IRRAS), also called infrared external reflection spectroscopy, is used for studying ultrathin hybrid clay films prepared by the Langmuir–Blodgett (LB) method. Infrared spectra of the hybrid films have been obtained at the air–water and air–solid (gold) interface. The presence of a smectite monolayer is observed when cationic surfactants are spread ov...
متن کاملGeochemical modulation of pesticide sorption on smectite clay.
Pesticide adsorption by soil clays can be dramatically influenced by the exchangeable cations present. Among the common exchangeable base cations in soils (Ca2+, Mg2+, K+, and Na+), K+-saturated clays frequently demonstrate the strongest affinity for pesticides. In the presence of multiple exchangeable cations in the system, we hypothesize that the magnitude of pesticide sorption to soil minera...
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ژورنال
عنوان ژورنال: Geology, Geophysics & Environment
سال: 2015
ISSN: 0138-0974
DOI: 10.7494/geol.2015.41.1.125