International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 12 | Dec 2024
p-ISSN: 2395-0072
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Adsorption of Cadmium Ions from Aqueous Solution Using Mno2 and Tio2 Monoliths Smt. Seema .S. Jadhav*1,Vilas Kulakarni*2, Smt.Akshata Kushtagi*3 *1
Sr. Gr. Lecturer Department Of Civil Engineering, Government Polytechnic Bilagi, Karnataka, India. *2 Lecturer Dept. Of Civil Engineering, Government Polytechnic Bilagi, Karnataka, India. *3 Lecturer Department Of Civil Engineering, Government Polytechnic Vijayapur, Karnataka, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Till now, the excessive release of Cd2+ ions in
oxide as noano adsoebants have shown better results as a very good adsorbents.[3]
water became a foremost concern by way of threatening human health seriously. Therefore, for removal of heavy metal ions from waste water, adsorbent with high efficacy and lowcost technologies is most needed to alleviate the situation. In this work, robust, synthesized Metal-oxide monoliths (MnO2 and TiO2) by nanocasting process and their performance as an adsorbent for removal of heavy metal ( Cd2+) ions from aqueous water was successfully evaluated. The adsorption data shows better fit at pH 6.5, metal ion concentration of 30mg/l and contact time of 47.5 minutes. The maximum adsorption efficacy of Cd2+ ions by monoliths was found to be 94.5% and 90.92 % respectively.
1.1 NANOTECHNOLOGY AND NANOMATERIALS Nanotechnology is the use of nano science, which is the study of nano scale constituents that demonstrate remarkable functionality, properties and phenomena due to the effect of small sizes. Nanotechnology depends on the operation, control, and settlement of particles & atoms to shape things, constructions, segments, gadgets, and frameworks at the nano scale. Some of the capable water treatment methods/tools presented by nanotechnology are Nano-sorbents (Adsorption),Nano-filtration (Membranes and membrane processes), Photocatalysis [4].
Key Words: Titanium di-oxide (TiO2 ), Manganese dioxide (MnO2 ), Cadmium, adsorption, Monolith, dosage.
Metal Oxide Based Nano materials: Nano sized metaloxide have extraordinary properties, with great removal capacity and selectivity to heavy metals. So, they offer promising capable adsorbents for heavy metals. Metaloxides nano constituents comprises of nano sized zinc oxide, iron oxide, titanium oxide, manganese oxide, zirconium oxide and aluminum oxide etc.[5]
1.INTRODUCTION In Asia around 4.4 billion i.e.60% of the world population lives, 1.2 billion in Africa (16%), 738 million i.e. 10% in Europe, the Caribbean and Latin America(634 million) 9%, and remaining 5%(358 million)in Northern America and 39 million Oceania. One and half billion from China & one billion in India are the 2 major nations of the globe signifying 19% and 18% of the world’s population. WHO-World Health Organization in 2015 reported that 663 million (9%) of the globe’s residents have no access to pure drinking water. 48% sub-Saharan Africa region population will have no access to pure water, 20% (134 million) people of Southern Asia being the 2nd highest. The rural areas population mainly affect without access to fresh drinking water &sanitation. [1].
Manganese Oxides Based Nano materials: Nano crystalline manganese oxide with large surface area shows excellent adsorption capacity.[6]
Titanium Oxides Based Nano materials: Titanium oxide,
degrades the organic impurities and hence used for the heavy metal removal.[7].
Advantages
The presence of heavy metals like zinc, mercury, nickel, arsenic, chromium,cadmium in waste water is increasing day by day due to growth of industry and human activities, e.g., mining, use of batteries, use of bio reactors etc. Cadmium( is one such heavy metal which results from such activities.[2] The maximal permissible limit for cd(cadmium) is 0.003mg/L. The above concentration is the threshold limit for the maintenance of an ecological equilibrium and public health. Study concentrates in removal of Cd from waste water with the process of adsorption. R emoval of cadmium from waste water by using titanium di-oxide and manganese
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The advantages of using Nanotechnology in wastewater treatment are: Cost saving on materials and less waste on raw material, i.e. Huge number of sample testing done on a lowest scale, hence raw material usage will be more effective. Use of catalysts (Nano scale chemical reagents) enhances rate of chemical reaction.[8] Cleaner, mpore effective industrial practices.
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