This page has only limited features, please log in for full access.

Unclaimed
Monika Duhan
Department of Applied Chemistry, Delhi Technological University, Delhi 110042, India

Basic Info

Basic Info is private.

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

Dr. Monika Duhan. I have done my Ph.D in Chemistry from Delhi Technological University, Applied Chemistry Department, Delhi. I have completed M.Sc. in 2011 from MDU, Rohtak and B.Sc in 2009 from KUK. I have published total five research papers and one Book Chapter.

Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 31 December 2020 in Journal of Composites Science
Reads 0
Downloads 0

The textile sector is one of the major culprits of water pollution, and demands immediate attention. The coloured textile effluent, loaded with toxic dyes, when mixed with waterbodies, may harm aquatic life, plants, animals, and humans. Although polyaniline in its different forms was utilised for the adsorption of different dyes, the pure nano-fibrous form of polyaniline, i.e., PANI nanofibers, have reportedly not been used for the removal of dyes from wastewater. The present study aimed to employ nano-structured polyaniline, in the form of polyaniline nanofibers (base; PNB—polyaniline nanofiber base) for the elimination of methylene blue (cationic dye; MB) dye from its solution. The polyaniline nanofiber base (PNB) was synthesised by an interfacial polymerisation technique using ammonium persulphate as the oxidant and toluene as the organic solvent, and was characterised by FTIR, SEM, BET, HRTEM and XRD techniques. The HRTEM and SEM results showed that the average size of the synthesised polyaniline nanofiber base (PNB) was about 60 nm. BET revealed the enhanced surface area of polyaniline nanofiber base (PNB), i.e., 48 m2g−1 in comparison to that of conventionally synthesised polyaniline, which is only 14 m2g−1. The electric conductivity of the polyaniline nanofiber base (PNB) was reportedly lesser (2.3 × 10−2 S/cm) than the salt form of the polyaniline, measured by four probe technique. The batch-wise adsorption of MB was conducted onto the polyaniline nanofiber base (PNB), and the influence of the preliminary dye concentration, duration of contact and polyaniline nanofiber base (PNB) dose, etc., were studied. The equilibrium values of these parameters are reported as 6 mg/L, 60 min and 2 g/L, respectively. The results revealed the 91% sorption of dye onto the polyaniline nanofiber base (PNB). The experimental data were best-fitted to Pseudo-second order (R2 = 0.99) and followed Freundlich isotherm model (R2 = 0.97). On desorption, about 86% of the absorbed dye was recovered and the regenerated adsorbent could be used efficiently for three more cycles.

ACS Style

Monika Duhan; Raminder Kaur. Nano-Structured Polyaniline as a Potential Adsorbent for Methylene Blue Dye Removal from Effluent. Journal of Composites Science 2020, 5, 7 .

AMA Style

Monika Duhan, Raminder Kaur. Nano-Structured Polyaniline as a Potential Adsorbent for Methylene Blue Dye Removal from Effluent. Journal of Composites Science. 2020; 5 (1):7.

Chicago/Turabian Style

Monika Duhan; Raminder Kaur. 2020. "Nano-Structured Polyaniline as a Potential Adsorbent for Methylene Blue Dye Removal from Effluent." Journal of Composites Science 5, no. 1: 7.

Articles
Published: 01 April 2019 in Environmental Technology
Reads 0
Downloads 0

The present study reports the adsorptive removal of methyl orange from its aqueous solution by the utilization of polyaniline (PANI) nanofibers. PANI nanofibers were synthesized by conventional interfacial polymerisation method using ammonium persulphate (APS) as oxidant in an acidic medium. The average diameter of the synthesised PANI nanofibers was found to be 60 ± 5 nm as detected by HRTEM and SEM techniques. The synthesized PANI nanofibers were characterised by FTIR, XRD, UV-VIS spectroscopy, BET, ZETA potential and Four-probe conductivity techniques and were further used for the adsorption of methyl orange (MO) dye from its aqueous solution, using batch mode experiments. Due to their positively charged backbone, PANI nanofibers are found to be suitable for the adsorption of anionic dyes such as MO. The BET surface area of the synthesized polyaniline nanofibers was found to be 48.83m2g-1 (higher than conventionally synthesized polyaniline). The influence of important adsorption parameters i.e. initial dye concentration, pH and duration of contact were also studied and the equilibrium values of these parameters are noted to be 7 mg L-1 , pH ∼7 and 80 minutes respectively. The experimental data was found to be best fitted to the Pseudo-second order model (R2=0.99). The Freundlich isotherm was found to be best fitted for the adsorption of Methyl orange onto PANI nanofibers with R2=0.91.

ACS Style

Monika Duhan; Raminder Kaur. Adsorptive removal of methyl orange with polyaniline nanofibers: an unconventional adsorbent for water treatment. Environmental Technology 2019, 41, 1 -14.

AMA Style

Monika Duhan, Raminder Kaur. Adsorptive removal of methyl orange with polyaniline nanofibers: an unconventional adsorbent for water treatment. Environmental Technology. 2019; 41 (23):1-14.

Chicago/Turabian Style

Monika Duhan; Raminder Kaur. 2019. "Adsorptive removal of methyl orange with polyaniline nanofibers: an unconventional adsorbent for water treatment." Environmental Technology 41, no. 23: 1-14.