Adsorption of Organic Acids on Weakly Basic ion Exchanger: Equilibria.

Adsorption of Organic Acids on Blast Furnace Sludge

This paper describes the adsorption of two organic (acetic and citric) acids on the blast furnace sludge, a representative by-product of the steelmaking industry. By PIXE, XRD, BET and SEM methods, it was shown that blast furnace sludge is a complex heterogeneous material with a specific surface area of s = 31.46 m g, composed mainly of amorphous phase (w = 76.2 %), calcite (w = 9.9 %), magneti...

Adsorption of Basic Organic Colorants from an Aqua Binary Mixture by Diatomite

D iatomite is an inexpensive natural mineral. It can be used as an adsorbent to remove organic and inorganic pollutants from the waste waters without further improvement. In this research, the adsorption of two different basic colorants including Basic Yellow 28 (BY28) and Malachite Green (MG) by diatomite has been investigated in an aqua binary mixture and the effects of different parameters h...

Adsorption and Desorption Reactions Involving Phosphate and Organic Acids

Ion Adsorption in Weakly Charged Membranes . Effects on Salt Flux and Membrane Potential

Ion transport across weakly charged membranes with surface charge due to ion adsorption is analyzed and particular attention is paid to the caw of Langmuir-type adsorption. Coupling between electrodiffusion of ions and their adsorption to the membrane matrix results ina number of intereating nonlinear phenomena. The steady-state transport equations lead to a firat-order differential equation th...

Organic ion transport during seven decades. The amino acids.

The amino acids are ions of various charge combinations, and one can argue that historically they were the first ions for which the ongoing problem of membrane transport was presented; also that among transported ions these may undergo a highly detailed molecular recognition. Furthermore, the distribution of charge on the amino acid molecule determines by what route or routes it is conducted ac...