As (v) Removal from Waste Water Using Class F Fly Ash as an Adsorbent
Journal Title: International journal of Emerging Trends in Science and Technology - Year 2015, Vol 2, Issue 7
Abstract
Arsenic occurs in both organic and inorganic forms in snatural waters but organic arsenic is of little importance as it goes through biotransformation and detoxifies through methylation. Inorganic arsenic occurs in -3, 0, +3, and +5 oxidation states in aquatic systems. Inorganic species of arsenic [As(III) and As(V)] represent a potential threat to the environment, human health, and animal health due to their carcinogenic and other effects. The fly ash carbons occur in the residual coal ash as a result of the incomplete combustion process. Due to the increasing applications of activated carbons, fly ash carbon may take a special place amongst the carbon materials that are produced as a major co-product in the pyrolysis of different starting materials for the production of liquids and gases. Fly ash collected from Kota thermal power plant(Rajasthan) was found to be class F fly ash as amount of SiO2> 60%. Batch methods were used in this study to investigate arsenic adsorption using a clean, washed ash. ashStock solutions of As(V) were prepared by dissolving sodium salt heptahydrate of arsenic (Na2HAsO4⋅7H2O) . Experimental results indicated that pH had a significant effect on arsenic adsorption. Experimental equilibrium data of arsenic adsorption onto fly ash agglomerates can be fitted by Freundlich and Langmuir isotherm, while kinetics follows a pseudo second order model. The negative values of ΔG o and ΔH o indicated that adsorption was spontaneous and exothermic process. The developed adsorption system is useful and can be used for the removal arsenic from contaminated water.
Authors and Affiliations
Kanchan Deep Chaudhary
Keywords
Related Articles
- EP ID EP241048
- DOI -
- Views 90
- Downloads 0
Sensor Based Bridge Condition Monitoring System Using GSM
In this paper, a new bridge health monitoring system is suggested. Basically, in this project we are going to monitor the parameters of the bridge which will help us to maintain the bridge and detect the faults in it. Th...
Characterization of Nanocrystalline Nickel Doped Titanium -Dioxide, Synthesized by Co Precipitation Method.
The recent trend in the field of semiconducting technology is the fabrication of nanoscaled semiconductor devices which have diversified applications in various fields of science and technology. In the present study thre...
Effect of Sporlac on Protein Content of Silkworm Bombyx Mori L
Silk production basically depends on the Bombyxmori L. larval protein metabolism which in turn needs more energy generating events, spinning requires more muscular activity and silk is being produced by the silk gland. T...
Hacking in Social Media and Some Guidelines to Avoid It
Hacking in social media means to get private information of user without his permission. In this work, an attempt has been made to show you that what mistakes are generally done by users. So that hacker takes advantages...
A New Digital Encryption Scheme: Sub areas Exchange Encryption Approach
In today’s data communication world info has become a lot of valuable; thence its security is very important and plays a vital role. To produce such security we tend to propose a brand new secret writing mechanism that o...