Application of Box–Behnken design for optimizing parameters of hexavalent chromium removal from aqueous solutions using Fe3O4 loaded on activated carbon prepared from alga: Kinetics and equilibrium study

2021 ◽  
Vol 42 ◽  
pp. 102113
Author(s):  
Shirin Afshin ◽  
Yousef Rashtbari ◽  
Mehdi Vosough ◽  
Abdollah Dargahi ◽  
Mehdi Fazlzadeh ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Chromium Removal ◽  
Box Behnken Design ◽  
Equilibrium Study

Hexavalent chromium removal from aqueous solutions using biogenic iron nanoparticles: Kinetics and equilibrium study

2021 ◽  
pp. 112477
Author(s):  
P. Prema ◽  
Van-Huy Nguyen ◽  
Karthikeyan Venkatachalam ◽  
J.M. Murugan ◽  
Hayssam M. Ali ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Iron Nanoparticles ◽  
Chromium Removal ◽  
Equilibrium Study ◽  
Biogenic Iron

Removal of nickel (II) ions from aqueous solutions using modified activated carbon: A kinetic and equilibrium study

2017 ◽  
Vol 39 (6) ◽  
pp. 862-873 ◽  
Author(s):  
Mahmoud O. Abd El-Magied ◽  
Ali M. A. Hassan ◽  
Hamdi M. H. Gad ◽  
Tarek F. Mohammaden ◽  
Mohamed A. M. Youssef
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Modified Activated Carbon ◽  
Equilibrium Study

Facile modification of activated carbon with highly dispersed nano-sized α-Fe2O3 for enhanced removal of hexavalent chromium from aqueous solutions

Chemosphere ◽  
2019 ◽  
Vol 224 ◽  
pp. 220-227 ◽  
Author(s):  
Bing Li ◽  
Weizhao Yin ◽  
Meng Xu ◽  
Xueyun Tan ◽  
Ping Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Highly Dispersed

scholarly journals Recent advances in hexavalent chromium removal from aqueous solutions by adsorptive methods

RSC Advances ◽  
2019 ◽  
Vol 9 (45) ◽  
pp. 26142-26164 ◽  
Author(s):  
Vusumzi E. Pakade ◽  
Nikita T. Tavengwa ◽  
Lawrence M. Madikizela
Keyword(s):  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Chromium Removal ◽  
Recent Advances

Despite the extensive existence of adsorbents for Cr(vi) removal from aqueous solutions, new adsorbents and modification of existing adsorbing materials are continuously sought after.

Hexavalent chromium removal from aqueous solutions by a novel powder prepared fromColocasia esculentaleaves

2016 ◽  
Vol 18 (8) ◽  
pp. 812-821 ◽  
Author(s):  
E. Nakkeeran ◽  
N. Saranya ◽  
M.S. Giri Nandagopal ◽  
A. Santhiagu ◽  
N. Selvaraju
Keyword(s):  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Chromium 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).

Core-Shell Bimagnetic Nanoadsorbents for Hexavalent Chromium Removal from Aqueous Solutions

2019 ◽  
Vol 362 ◽  
pp. 82-91 ◽  
Author(s):  
Alex Fabiano Cortez Campos ◽  
Helena Augusta Lisboa de Oliveira ◽  
Fabiana Narciso da Silva ◽  
Franciscarlos Gomes da Silva ◽  
Priscilla Coppola ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Core Shell ◽  
Chromium Removal
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