Author
Sagar Pal
Other affiliations: Indian Institute of Technology Dhanbad, Indian Institute of Technology Kharagpur, Birla Institute of Technology, Mesra ...read more
Bio: Sagar Pal is an academic researcher from Indian Institutes of Technology. The author has contributed to research in topics: Flocculation & Copolymer. The author has an hindex of 40, co-authored 141 publications receiving 5271 citations. Previous affiliations of Sagar Pal include Indian Institute of Technology Dhanbad & Indian Institute of Technology Kharagpur.
Topics: Flocculation, Copolymer, Polyacrylamide, Nanocomposite, Adsorption
Papers published on a yearly basis
Papers
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TL;DR: The synthesis and characterization of a novel nanocomposite is reported that was developed as an efficient adsorbent for the removal of toxic methylene blue and methyl violet from aqueous solution, and is considered interesting materials for the uptake of, for instance, toxic dyes from wastewater.
Abstract: The synthesis and characterization of a novel nanocomposite is reported that was developed as an efficient adsorbent for the removal of toxic methylene blue (MB) and methyl violet (MV) from aqueous solution. The nanocomposite comprises hydrolyzed polyacrylamide grafted onto xanthan gum as well as incorporated nanosilica. The synthesis exploits the saponification of the grafted polyacrylamide and the in situ formation of nanoscale SiO2 by a sol–gel reaction, in which the biopolymer matrix promotes the silica polymerization and therefore acts as a novel template for nanosilica formation. The detailed investigation of the kinetics and the adsorption isotherms of MB and MV from aqueous solution showed that the dyes adsorb rapidly, in accordance with a pseudo-second-order kinetics and a Langmuir adsorption isotherm. The entropy driven process was furthermore found to strongly depend on the point of zero charge (pzc) of the adsorbent. The remarkably high adsorption capacity of dyes on the nanocomposites (effici...
435 citations
TL;DR: In this article, a series of cationic starches (Cat St) were developed by incorporating N-(3-Chloro-2-hydroxypropyl) trimethyl ammonium chloride (CHPTAC) onto the backbone of starch in presence of NaOH.
339 citations
TL;DR: The aim of this work is to study the feasibility of XG-g-PAM/SiO2 nanocomposite towards its potential application as high performance adsorbent for removal of Congo red (CR) dye from aqueous solution.
206 citations
TL;DR: In this article, a functionalized polymeric flocculants based on polyacrylamide grafted carboxymethylstarch (CMS-g-PAM) have been successfully synthesized via conventional method (using ceric ammonium nitrate as free radical initiator, in an inert atmosphere) as well as by using microwave irradiation (microwave initiated) synthesis.
168 citations
TL;DR: Xanthan gum (XG) and its graft co-polymer have been investigated as corrosion inhibitors for mild steel in 15% HCl using Gravimetric analysis, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods.
158 citations
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TL;DR: Further investigation and development of large-scale production and harvesting methods for biofuels and bioproducts are necessary, particularly with less studied but promising approaches such as those involving attached algal biofilm cultures.
1,226 citations
TL;DR: There is a focus on polymers for primary coagulation, their use as coagulant aids, in the recycling of filter backwash waters, and in sludge thickening.
1,194 citations
TL;DR: Progress towards controlled synthesis of alginate derivatives, and the properties and applications of these derivatives are reviewed.
1,182 citations
TL;DR: An overview of the development of different types of flocculants that were being investigated for treatment of industrial wastewater can be found in this paper, where the flocculation mechanism is discussed.
723 citations