A slightly modified form of the branched pore model of Peel, Benedek and Crowe was successfully applied to describe the batch sorption kinetics of three metal ions—cadmium, copper and zinc—on bone char. In comparison with an analytical film-surface solution, the additional parameters of the branched pore model were observed to produce a significant improvement in correlating the experimental re...

Thirty strains of algae were examined for their biosorption abilities for the uptake of cadmium, lead, nickel and zinc from aqueous solutions. A wide range of adsorption capacities was observed between the different strains of algae and between the four metals. The cyanophyceae Lyngbya taylorii exhibited high uptake capacities for the four metals. It was confirmed by using instrumental analysis...

Serratia marcescens has been studied to show a higher degradation potential for organo-phosphorus pesticides. This property made it useful as bioremediation agent. The bacterial cell was bio-stimulated in luria beterni broth at selected experimental temperature ranging from 25 ºC – 40 ºC. highest biomass recorded 35 range 7.56 -8.10mg/ml single strength and double yeast extract beterni, respect...

Atsushi Kondo,† Hiroshi Noguchi,† Lucia Carlucci,‡ Davide M. Proserpio,‡ Gianfranco Ciani,‡ Hiroshi Kajiro,*,§ Tomonori Ohba,† Hirofumi Kanoh,*,† and Katsumi Kaneko† Graduate School of Science, Chiba UniVersity, Yayoi, Inage, Chiba 263-8522, Japan, Nippon Steel Corporation, Shintomi, Futtsu, Chiba 293-8511, Japan, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, UniVersità di...

A system for separation of zinc traces from large amounts of cadmium is proposed in this paper. It is based on the solid-phase extraction of the zinc in the form of thiocyanate complexes by the polyurethane foam. The following parameters were studied: effect of pH and of the thiocyanate concentration on the zinc extraction, shaking time required for quantitative extraction, amount of PU foam ne...

As part of a study of the effect of particle size on reactivity of hematite to aqueous metal ions, the sorption of Zn(II) on hematite nanoparticles and microparticles was examined over a wide range of Zn(II) concentrations using Zn K-edge EXAFS. When reacted with nanoparticles at pH 5.5 and low Zn(II) sorption densities (0.04 < Γ < 2.76 μmol/m), Zn(II) formed five-coordinated or a mixture of fo...

IRMOF-3 nano/microcrystals with controllable morphologies and sizes were successfully obtained by a simple solvothermal method. The shape evolution of IRMOF-3 crystals from cube to truncated cube, cuboctahedron, truncated octahedron and finally to octahedron was achieved by adjusting the amount of surfactant. The surfaces of the IRMOF-3 nano/microstructures are affected by the reaction temperat...