by Anil Kumar and Omprakash Sahu
Original Research
Toxics metals have been excessively released into the environment due to rapid industrialization and have created a major global concern. Cadmium, zinc, copper, nickel, lead, mercury and chromium are often detected in industrial wastewaters. Various methods available in literature but due economical point view are facing difficulties to be adopted. Some alternative methods like adsorption material bagasse, rice husk, wheat husk sawdust etc, are more popular due to efficiency as well as cost of treatment. In present study bagasse from sugarcane industry were used to remove the toxic metal from waste. Batch studies were performed to evaluate the adsorption process, and it was found that the bagasse was found to adsorb 96.4% of Cadmium (II) and 93.8% of iron (II). The rate of adsorption follows pseudo-second-order kinetics before attaining equilibrium. The desorption studies suggested that the desorption of Cadmium (II) and iron (II) was the most difficult and the desorption was zero. This work proved that bagasse can be used as an efficient adsorbent material for removal of heavy metals from water and wastewater.levofloxacin 250mg
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World Journal of Chemical Education. 2013, 1(1), 17-20. DOI: 10.12691/wjce-1-1-5
Pub. Date: December 22, 2013
20940 Views8515 Downloads36 Likes5 Citations
by Toratane Munegumi
Original Research
The strength of an acid is generally discussed as a unique feature of the acid itself according to its chemical structure. Strong acids have a lower pKa value, and weak acids have a higher one. In the classrooms of high schools and universities, we sometimes use the technical terms “strong acid” and “weak acid”. However, there are some acids for which it is very difficult to say, from their pKa values, whether they are strong or weak. This research addresses the distinction between strong acids and weak acids, in a restricted initial concentration of acids, to provide a clear distinction between strong acids and weak acids.husband cheated wife
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World Journal of Chemical Education. 2013, 1(1), 12-16. DOI: 10.12691/wjce-1-1-4
Pub. Date: November 29, 2013
52292 Views15006 Downloads35 Likes4 Citations
by Mala Das Sharma
Original Research
A simple and cost-effective bench-top gas generator for its use in the laboratory classes is designed and fabricated. The set-up is meant for generation of hydrogen sulfide gas and is in use by the students at the chemistry laboratory of our college for the past eight years. However, other gases like carbon dioxide, hydrogen and acetylene can also be produced using the same set-up. This article describes the design and fabrication of the bench-top set up with special reference to generation of hydrogen sulfide gas. The new set-up is easy to use and requires few chemicals.cipro 250mg
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World Journal of Chemical Education. 2013, 1(1), 9-11. DOI: 10.12691/wjce-1-1-3
Pub. Date: October 06, 2013
18585 Views6838 Downloads35 Likes1 Citations
by Arijit Das, Suman Adhikari, Bijaya Paul, R. Sanjeev and V. Jagannadham
Original Research
Prediction of aromatic and anti-aromatic behavior of organic compounds is a vitally important tool for students of chemistry at graduate and post-graduate level for solving different kinds of problems regarding reactivity, stability and acidic properties etc. In this manuscript we try to present a simple and innovative method for easy identification of aromatic and anti-aromatic behavior of organic compounds from their non-aromatic nature excluding Huckel’s rule of aromaticity.why does my boyfriend cheat
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World Journal of Chemical Education. 2013, 1(1), 6-8. DOI: 10.12691/wjce-1-1-2
Pub. Date: September 12, 2013
26251 Views7408 Downloads39 Likes
by R. Sanjeev, V. Jagannadham and R. Veda Vrath
Review Article
Our mission has perceivedand still continuing exceptionalachievement on ‘Transforming chemistry research in to chemistry teaching’. In this course of events we have been able to publish several articles in the area of chemical education. In continuation of this,the present article using a total of 38 amines isone of our successful aftermaths of the importance of nucleophilic solvation of ammonium bond (≡N+-H in protonated amines.We have explained the significance of nucleophilicsolvation of ammonium bond in protonated aminesin a simple and lucid way using Taft linear polar free energy correlations of pKa’sin aqueous solution and dipole moments in gas phase, in benzene, in cyclohexaneand of pure liquids of several primary, secondary and tertiary amines as a function of Taft polar substituent constants. Our performed Taft correlations showed that the solvation of ammonium bond in protonated aminesthrough ≡N+-H bond is worth understanding in terms of steric hindrance which is absent in gas phase, in benzeneand in cyclohexane as it imparts its substance in biology.free malayalam hot sex stories
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World Journal of Chemical Education. 2013, 1(1), 1-5. DOI: 10.12691/wjce-1-1-1
Pub. Date: September 04, 2013
20942 Views8665 Downloads33 Likes