Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/51994
Title: Biomimetic Synthesis of Hybrid Materials for Potential Applications
Authors: RAMAKRISHNA MALLAMPATI
Keywords: Water treatment, adsorption, biopeel, nanoparticles, apple peel, metal oxides
Issue Date: 31-Jul-2009
Source: RAMAKRISHNA MALLAMPATI (2009-07-31). Biomimetic Synthesis of Hybrid Materials for Potential Applications. ScholarBank@NUS Repository.
Abstract: One of the common problems throughout the world that needs to be addressed immediately is availability of drinking water. Water is being contaminated by different pollutants such as pesticides, toxic heavy metal ions and dyes which create health problems in living organisms. Different water treatment techniques have been explored and used for water purification, but such methods cannot extract all pollutants, especially those new emerging ones, due to diversity in the chemical and physical properties of contaminants. In this work, a few adsorbents were prepared from readily available biomass. Biowaste materials such as fruit peels are used directly as adsorbents and as templates to prepare other hybrid materials and characterized using different analytical methods such as scanning electron microscopy (SEM), thermo gravimetric analysis (TGA), transmission electron microscopy (TEM) and X-ray diffraction analysis (powder XRD). Adsorption efficiency of each material was evaluated using batch adsorption studies. Langmuir and Freundlich isotherm models were used to validate the adsorption process. Kinetic studies were done to further understand the adsorption process. The biomass investigated in this thesis showed excellent extraction properties and further research need to be done to test them in large scale water purification methods. In addition, nanoparticles adsorbed on the biomembranes were used as catalysts for organic transformations. Overall, we have shown that biomembranes are useful templates for many applications.
URI: http://scholarbank.nus.edu.sg/handle/10635/51994
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
THESIS-RAMAKRISHNA MALLAMPATI.pdf8.03 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

137
checked on Jan 21, 2018

Download(s)

1,807
checked on Jan 21, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.