Yuvaraja
@vcet.ac.in
Assistant Professor Department of Civil Engineering
Velammal College of Engineering and Technology
RESEARCH INTERESTS
Green Concrete
Eco Friendly Constructions
Industrial Waste Management
Structural Behaviour of R.C Structures
Earthquake Studies on Structural Design
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
<p>The packed bed column study investigated the removal of toxic metal ions (Cr, Pb &amp; Zn) using rice husk coated with iron oxide nanoparticles as an adsorbent material. The chemical fusion process prepared the nanomaterial adsorbent, and iron oxide capping provides stability to the prepared nano adsorbent. The characteristics of prepared nano adsorbents and their stability were examined by SEM/EDX, VSM, XRD, Zeta Potential, TGA &amp; DTA methods. Breakthrough curves confirm the ability to obtain the maximum adsorption under operating conditions of 5, 7.5 &amp; 10 - cm bed heights, 100, 200 &amp; 300 – mg/L of metal ion concentrations and 5, 7.5 &amp; 10 – mL/min of inflow rate of the solutions into the column. The ANOVA &amp; CCD analysis confirms the linearity of actual and predicted values of the amount of adsorption process. Thomas and BDST model studies show the best fit to the regression values for obtaining earlier breakthroughs in the fixed bed column. At the pH of 2.0, the maximum amount of heavy metals adsorption was observed. The maximum desorption rate of the column and adsorbent material was obtained by adding 0.3 N of H2SO4 at 40 minutes average time for all the three metal ions.</p>
S. Suresh Pungaiah, Kuldip Kumar Sahu, R. Yuvaraja, G. Jayahari Prabhu, R. Raja Sudharsan, P. Thamizhvalavan, and Kiran Ramaswamy
Hindawi Limited
The stir casting process produces boron nitride (B4N) and fly ash-based LM6 metal matrix composites. This hybrid composite was fabricated by varying fly ash from 3% to 15% with an increase of 3%. While the other reinforcement B4N concentration was kept constant as 3%. The morphology of the metal matrix composite is analysed using a light optical microscope. The microstructure analysis shows the uniform distribution of hybrid reinforcement throughout the matrix, and only a few clusters are found in the matrix alloyed with 15% B2N. Both pure and reinforced matrices are evaluated for the mechanical properties’ evaluation. The result shows an increment in hardness from 70.4 VHN to 96.2 VHN. Similarly, the tensile strength of the composite material is improved from 151 MPa to 192 MPa. The reason for improving strength and hardness is the uniform distribution of hybrid reinforcement in the LM6 matrix.