Results 41 to 50 of about 980,324 (197)

Activated Carbon for Dyes Removal: Modeling and Understanding the Adsorption Process

open access: yesJournal of Chemistry, 2020
Batch adsorption experiments have been conducted to investigate the removal of methyl orange from aqueous solution by an activated carbon prepared from prickly pear seed cake by phosphoric acid activation.
Y. El maguana   +3 more
doaj   +1 more source

Kinetic, Isotherm and Thermodynamic Aspects of Zn2+ Biosorption by Spirulina platensis: Optimization of Process Variables by Response Surface Methodology

open access: yesLife, 2022
The aim of this study was to assess the efficiency of Spirulina platensis for removing Zn2+ ions from the aqueous solutions. The optimized conditions of 4.48 g/L algal dose, pH of 6.62 and initial zinc concentration of 29.72 mg/L obtained by response ...
Nada K. Alharbi   +5 more
doaj   +1 more source

Bosonic spin-1 SOPHY

open access: yesPhysics Letters B
In this work we study the canonical quantization of a second-order pseudo-Hermitian field theory for massive spin-1 bosons transforming under the (1, 0)⊕(0, 1) representation of the restricted Lorentz Group and satisfying the Klein-Gordon equation.
Armando De la C. Rangel-Pantoja   +2 more
doaj   +1 more source

Kinetic Approach for the Adsorption of Organophosphorous Pesticides from Aqueous Solution Using “Waste” Jute Fiber Carbon

open access: yesE-Journal of Chemistry, 2010
Chemically activated “Waste” Jute Fiber carbon has been effectively used for the removal of five organophosphorous pesticides (malathion, monocrotophos, methylparathion, phosphamidon and dimethoate) from aqueous solutions.
S. Senthilkumaar   +5 more
doaj   +1 more source

Application of a Mixed Order Model to Determine the Rate Adsorption of 1-Nitronaphthalene onto Activated Carbon

open access: yesApplied Environmental Research, 2019
This study investigated the adsorption kinetics of 1-nitronaphthalene solution (a polycyclic aromatic hydrocarbon, PAH) onto seven different masses of activated carbon.
Suntree Rincome
doaj   +7 more sources

Pseudo-monotonicity and degenerate elliptic operators of second order

open access: yesElectronic Journal of Differential Equations, 2002
Extending the theory of pseudo-monotone mappings in weighted Sobolev spaces, we prove some existence results for degenerate or singular elliptic equations generated by the second-order differential operator $$ Au(x)=-mathop{m div}a(x,u,abla u))+a_0(x,u ...
Youssef Akdim, Elhoussine Azroul
doaj  

Pseudo-Almost Automorphic Solutions to Some Second-Order Differential Equations

open access: yesCubo, 2011
In this paper we study and obtain the existence of pseudo-almost automorphic solutions to some classes of second-order abstract differential equations on a Hilbert space.
Toka Diagana, Ahmed Mohamed
doaj  

Removal of Pb (II) From Wastewater Using Henna; Optimization of Operational Conditions [PDF]

open access: yesIranian Journal of Chemical Engineering, 2018
At this work, removal of Pb (II) using Lawsonia inermis (Henna) was studied. In recent years, use of low price adsorbent is taken into consideration. Adsorption experiments were performed in batch system at ambient temperature (25℃).
M. Shafiee, A. Akbari, B. Ghiassimehr
doaj  

ZnO Nanoparticles for Photocatalytic Application in Alkali-Activated Materials

open access: yesMolecules, 2020
This paper reports an Alkali-Activated Materials (AAM) using two different precursors, metakaolin and a metallurgical slag with photocatalytic zinc oxide nanoparticles, as novel photocatalytic composites.
Hector R. Guzmán-Carrillo   +3 more
doaj   +1 more source

Plots of pseudo-first-order (a) and pseudo-second-order (b) kinetic models.

open access: yes, 2014
Plots of pseudo-first-order (a) and pseudo-second-order (b) kinetic models.
Meishan Pei (552001)   +5 more
core   +1 more source

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