Sustainable Preparation of Fe(OH)3 and α-Fe2O3 Nanoparticles Employing Acacia Catechu Extract for Efficient Removal of Chromium (VI) from Aqueous Solution

2021 ◽  
pp. 100593
Author(s):  
Amrit Kaur ◽  
Harjinder Singh ◽  
Tejwant Singh Kang ◽  
Sukhprit Singh
Keyword(s):  
Aqueous Solution ◽  
Fe2o3 Nanoparticles ◽  
Efficient Removal ◽  
Chromium Vi ◽  
Acacia Catechu

Green synthesis of poly(pyrrole methane)-based adsorbent for efficient removal of chromium(VI) from aqueous solution

2021 ◽  
Vol 293 ◽  
pp. 126197 ◽  
Author(s):  
Yajun Ji ◽  
Feiya Xu ◽  
Panli Zhang ◽  
Yuanyi Xu ◽  
Gaili Zhang
Keyword(s):  
Aqueous Solution ◽  
Green Synthesis ◽  
Efficient Removal ◽  
Chromium Vi

Efficient removal of Chromium(VI) from aqueous solution using chitosan grafted graphene oxide (CS-GO) nanocomposite

2019 ◽  
Vol 121 ◽  
pp. 285-292 ◽  
Author(s):  
Melvin S. Samuel ◽  
Jayanta Bhattacharya ◽  
Sankalp Raj ◽  
Needhidasan Santhanam ◽  
Hemant Singh ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Efficient Removal ◽  
Chromium Vi

High efficient removal of chromium(VI) using glycine doped polypyrrole adsorbent from aqueous solution

2012 ◽  
Vol 198-199 ◽  
pp. 536-546 ◽  
Author(s):  
Niladri Ballav ◽  
Arjun Maity ◽  
Shivani B. Mishra
Keyword(s):  
Aqueous Solution ◽  
Efficient Removal ◽  
Chromium Vi ◽  
High Efficient

Studying dispersed and rheological properties of hydrocarbon-containing acid emulsions and their efficiency in removing asphalt-resin-paraffin deposits

2020 ◽  
pp. 128-139
Author(s):  
M. Yu. Shumakher ◽  
V. V. Konovalov ◽  
A. P. Melnikov
Keyword(s):  
Aqueous Solution ◽  
Hydrochloric Acid ◽  
Rheological Properties ◽  
Reaction Rate ◽  
Experimental Studies ◽  
Efficient Removal ◽  
Reservoir Properties ◽  
Hydrocarbon Solvents ◽  
Formation Zone ◽  
Effect Of The Composition

Currently, the treatment of the bottomhole formation zone with acidic compositions is one of the most common methods to intensify the oil inflow. The use of various modified acid compositions increases the efficiency of acid treatments on the bottomhole formation zone. Acid compositions, including those containing hydrocarbon solvents, which contribute to more efficient removal of organic colmatants, affect the reaction rate of the reagent with the rock and processing equipment, change the reservoir properties, etc.The article presents the results of experimental studies, which are aimed at establishing the effect of the composition of hydrocarbon-containing acidic emulsions consisting of an aqueous solution of hydrochloric acid, toluene and Neonol AF 9-10 on their dispersed and rheological properties, as well as their efficiency in removing paraffin deposits.

Breakthrough analysis for hexavalent chromium removal from drinking water in a fixed bed column

2009 ◽  
Vol 9 (6) ◽  
pp. 661-670 ◽  
Author(s):  
S. P. Dubey ◽  
K. Gopal
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium ◽  
Fixed Bed ◽  
Entropy Change ◽  
Spectroscopic Technique ◽  
Fixed Bed Column ◽  
Chromium Vi ◽  
Fixed Bed Adsorption ◽  
Optimal Column ◽  
Eucalyptus Bark

The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were found to be 1.39 kJ mol−1 K−1, 1.08 kJ mol−1 and −3.85 kJ mol−1, respectively. Different chromium concentrations were used for the fixed bed adsorption studies. The pre- and post-treated adsorbents were characterized using a FTIR spectroscopic technique. It was concluded that Eucalyptus bark carbon column could be used effectively for removal of hexavalent chromium from aqueous solution at optimal column conditions. This study showed that this biological material is potential adsorbent of Cr(VI) from water.

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