Dr. Y. Rajesh

Title: Adsorption Characteristics of Activated Carbon for the Recovery of Ni (II) and Pd(II) from Synthetic Electroless Plating Solutions.
 
Thesis Supervisor: Prof. R. Uppaluri
 
Abstract:
 
The Ph.D. thesis is summarized in four major areas of research that were undertaken to serve as a guideline for the Pd (II) recovery from synthetic electroless plating solutions:
  1. Preparation, characterization and batch adsorption characteristics of plant waste biomass based adsorbents for Ni (II) adsorption from aqueous solutions.  The adsorbents were prepared using phosphoric acid activation method. For comparative purpose, Ni (II) adsorption studies were conducted with synthetic electroless plating solutions and commercial activated carbon adsorbent.
  2. Preparation, characterization and batch adsorption characteristics of laboratory fabricated and commercial activated carbon adsorbents for the Pd (II) recovery from synthetic ELP solutions. The laboratory fabricated AC adsorbent was achieved using optimal combinations of sintering temperature (600 - 900 C) and acid to bamboo ratio (4:1 by weight).
  3. Continuous Pd (II) adsorption and desorption characteristics using commercial activated carbon adsorbent beads and aqueous/synthetic ELP solutions.
  4. Preparation, characterization and batch adsorption studies of chitosan-commercial activated carbon composite adsorbents or the Pd (II) recovery from synthetic electroless plating solutions. The prepared adsorbents correspond to impregnated and cross-linked chitosan activated carbon composite adsorbents.
 
Publications:
 
  1. Yennam Rajesh, Pujari Murali and Uppaluri Ramgopal,  "Equilibrium and Kinetic studies of Ni (II) adsorption using Pineapple and Bamboo Stem based adsorbents" Separation Science and Technology, 49:4, 533-544.
  2. Yennam Rajesh, Gummalla Namrata and Uppaluri Ramgopal, "Ni (II) adsorption characteristics of commercial activated carbon from synthetic electroless plating solutions", Desalination and Water Treatment, (Accepted).