Eco-friendly cost-effective approach for synthesis of ZnO nanoparticles and loaded on worn tire powdered activated carbon as a novel adsorbent to remove organic dyes from aqueous solutions: equilibrium, kinetic, regeneration and thermodynamic study

2021 ◽  
Vol 227 ◽  
pp. 391-403
Author(s):  
Shirin Afshin ◽  
Yousef Poureshgh ◽  
Yousef Rashtbari ◽  
Mehdi Fazlzadeh ◽  
Farshad Bahrami Asl ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Zno Nanoparticles ◽  
Organic Dyes ◽  
Cost Effective ◽  
Powdered Activated Carbon ◽  
Thermodynamic Study ◽  
Cost Effective Approach

scholarly journals Separation Cum Pre-Concentration Technique for Determination of Uranium in Sea, Brine and Ground Water at Nano to Sub nanogram Levels

2020 ◽  
pp. 302-312
Author(s):  
Leela Gopal ◽  
V. V. Hanuman ◽  
G. Chakrapani
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Ground Water ◽  
Contact Time ◽  
Sea Water ◽  
Cost Effective ◽  
Powdered Activated Carbon ◽  
Concentration Technique ◽  
Led Fluorimetry

Investigations were carried out for separation/pre concentration of uranium from aqueous solutions of different TDS using Powdered Activated Carbon (PAC). Parameters like amount of PAC, contact time, pH, volume of solutions and reagents for desorption were optimized. The sorption of uranium is more than 95% at pH 4-5 using 0.5 gram PAC with a contact time of 10 minutes.  The sorbed uranium on PAC is recovered using 0.8N HNO<sub>3</sub> and determined by LED Fluorimetry.  Method was successfully applied to ground water, sea water and brine water.  Methodology is simple, selective, cost effective with minimal skills. RSD of the method varies ± 6-14 %.

Mechanism and kinetic considerations of TOC removal from the powdered activated carbon ozonation of diclofenac aqueous solutions

2009 ◽  
Vol 169 (1-3) ◽  
pp. 532-538 ◽  
Author(s):  
Fernando J. Beltrán ◽  
J. Pablo Pocostales ◽  
Pedro M. Alvarez ◽  
Josefa Jaramillo
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Powdered Activated Carbon ◽  
Toc Removal

scholarly journals Sequestration of hexavalent chromium from aqueous solutions by activated carbon derived from Macadamia nutshells

2016 ◽  
Vol 75 (1) ◽  
pp. 196-206 ◽  
Author(s):  
V. E. Pakade ◽  
O. B. Nchoe ◽  
L. Hlungwane ◽  
N. T. Tavengwa
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Activated Carbons ◽  
Cost Effective ◽  
Sorption Process ◽  
Freundlich Model ◽  
Optimum Parameters ◽  
Effective Removal ◽  
Efficient Adsorbent

The purpose of this study was to investigate the feasibility of activated carbons prepared from Macadamia nutshells as an efficient adsorbent for the removal of hexavalent chromium (Cr(VI)) from aqueous solutions. The activated carbon was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), CHNS analyzer and Brunauer–Emmett–Teller (BET). For effective removal of Cr(VI), the optimum parameters found were pH 2, 120 min of contact time and 0.2 g of sorbent. The adsorption data fitted well into the Freundlich model, suggesting a multilayer sorption process. The results demonstrated that Macadamia activated carbon could be used as cost-effective biosorbent for the treatment of aqueous solutions contaminated by Cr(VI) with an adsorption capacity of 22.3 mg g−1. The mode of removal involved adsorption and reduction of Cr(VI) to Cr(III).

Thermodynamic study of triclosan adsorption from aqueous solutions on activated carbon

2019 ◽  
Vol 139 (2) ◽  
pp. 913-921 ◽  
Author(s):  
Valentina Bernal ◽  
Liliana Giraldo ◽  
Juan Carlos Moreno-Piraján
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Thermodynamic Study
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