Modeling of Cd adsorption to goethite-bacteria composites
نویسندگان
چکیده
منابع مشابه
GOLD ADSORPTION ON GOETHITE AND HUMIC ACID COATED GOETHITE. Tosiani
Natural organic matter (NOM) in surficial or ground water exists as a variety of molecular sizes and complex mixture of polyfunctional organic compounds. Adsorption of these organic compounds onto inorganic colloids can alter the physicochemical properties of the solid. Although many classical adsorption models have been developed, little consideration has been given to desorption modeling, so ...
متن کاملCd(II) Sorption on Montmorillonite-Humic acid-Bacteria Composites
Soil components (e.g., clays, bacteria and humic substances) are known to produce mineral-organic composites in natural systems. Herein, batch sorption isotherms, isothermal titration calorimetry (ITC), and Cd K-edge EXAFS spectroscopy were applied to investigate the binding characteristics of Cd on montmorillonite(Mont)-humic acid(HA)-bacteria composites. Additive sorption and non-additive Cd(...
متن کاملAdsorption Isotherms and Hysteresis of Proton Adsorp- Tion by Goethite
Madrid, L. and De Arambarri, P., 1978. Adsorption isotherms and hysteresis of proton adsorption by goethite. Geoderma, 21: 199-208. The adsorption of H+ions by goethite is only partially reversible and the adsorption process is faster than desorption. The adsorptian isotherm shows two inflexion points at pH y,alues 7.5 and 9.5, which can be attributed to the existence of two ar more types of OH...
متن کاملOuter Sphere Adsorption of Pb(II)EDTA on Goethite*
FTIR and EXAFS spectroscopic measurements were performed on Pb(II)EDTA adsorbed on goethite as functions of pH (4-6), Pb(II)EDTA concentration (0.11 μM 72 μM), and ionic strength (16 μM 0.5M). FTIR measurements show no evidence for carboxylate-Fe(III) bonding or protonation of EDTA at Pb:EDTA = 1:1. Both FTIR and EXAFS measurements suggest that EDTA acts as a hexadentate ligand, with all four o...
متن کاملAdsorption deformation of microporous composites.
We study here the behavior of flexible adsorbent materials, or soft porous crystals, when used in practical applications as nanostructured composites such as core-shell particles or mixed matrix membranes. Based on simple models and the well-established laws of elasticity, we demonstrate how the presence of a binder results in an attenuation of the adsorption-induced stress and deformation. In ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemosphere
سال: 2018
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2017.11.100