the objective of this study was to assess the adsorption potential of activated carbon (ac) asan adsorbent for the removal of murexide (mu) from aqueous solutions. the influence of variablesparameters including ph, amount of adsorbent, sieve size of adsorbent, temperature and contact timeon mu removal was studied. following optimization of variables, the relation between concentrations ofdye re...

We present a critique of the Halsey isotherm model (also known as Frenkel–Halsey–Hill), which is used by many researchers to interpret water contaminant adsorption data. first convert original for gas-phase form appropriate liquid-phase adsorption. call this version “genuine isotherm.” then show that currently in research bears only partial resemblance genuine isotherm. As such, we label former...

Abstract The present study aims at development of a mathematical model for the fixed-bed column adsorption that relates reactor parameters with breakthrough curve. Effects operating like bed height, flow rate, initial adsorbate concentration on were investigated by using various curves. arbitrary constants developed found to be dependent kinetics. proposed showed incredible results (Breakthroug...

Phosphate is one of the major causes of the water eutrophication, because it is often the limiting nutrient for primary production in fresh water and marine. The world health organization (WHO) especially established the committee for this, in order to research its origin cause of formation and make the countermeasure. Phosphate removal from wastewater has been widely investigated. Consequently...

v. dannon showed that spherical curves in e4 can be given by frenet-like equations, and he thengave an integral characterization for spherical curves in e4 . in this paper, lorentzian spherical timelike andspacelike curves in the space time 41 r are shown to be given by frenet-like equations of timelike andspacelike curves in the euclidean space e3 and the minkowski 3-space 31 r . thus, finding...

The aim of this study was to examine the removal ammonium ions from a synthetic model solution by using Na-zeolite-based geopolymers. Na-zeolite (=analcime) is residue mining industry. Three adsorbents were prepared different production steps and metakaolin as blending agent. These novel investigated in fixed-bed column system where effects flow rates with initial concentration 40 mg/L studied....