title: Sequestration of dyes from artificially prepared textile effluent using RSM-CCD optimized hybrid backbone based adsorbent-kinetic and equilibrium studies.
abstract: Present work reports the synthesis of semi-Interpenetrating Network Polymer (semi-IPN) using Gelatin-Gum xanthan hybrid backbone and polyvinyl alcohol in presence of l-tartaric acid and ammonium persulphate as the crosslinker-initiator system. Reaction parameters were optimized with Response Surface Methodology (RSM) in order to maximize the percent gel fraction of the synthesized sample. Polyvinyl alcohol, l-Tartaric acid, ammonium persulphate, reaction temperature, time and pH of the reaction medium were found to make an impact on the percentage gel fraction obtained. Incorporation of polyvinyl alcohol chains onto hybrid backbone and crosslinking between the different polymer chains were confirmed through techniques like FTIR, SEM-EDX and XRD. Semi-IPN was found to be very efficient in the removal of cationic dyes rhodamine-B (70%) and auramine-O (63%) from a mixture with an adsorbent dose of 700 mg, initial concentration of rhodamine-B 6 mgL-1and auramine-O 26 mgL-1, at an time interval of 22-25 h and 30 °C temp. Further to determine the nature of adsorption Langmuir and Freundlich adsorption isotherm models were studied and it was found that Langmuir adsorption isotherm was the best fit model for the removal of mixture of dyes. Kinetic studies for the sorption of dyes favored the reaction mechanism to occur via a pseudo second order pathway with R2value about 0.99.
authors.affiliation: Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India. Electronic address: sukriti.chemistry@gmail.com.
authors.lastname: Sukriti
authors.affiliation: Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India. Electronic address: jitenders.14.cy@nitj.ac.in.
authors.forename: Jitender
authors.initials: J
authors.lastname: Sharma
authors.affiliation: Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India. Electronic address: amrit.chem55@gmail.com.
authors.forename: Amritpal Singh
authors.initials: AS
authors.lastname: Chadha
authors.affiliation: Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India. Electronic address: vaishalipruthi@gmail.com.
authors.forename: Vaishali
authors.initials: V
authors.lastname: Pruthi
authors.affiliation: Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India. Electronic address: prerna.anand.15@gmail.com.
authors.forename: Prerna
authors.initials: P
authors.lastname: Anand
authors.affiliation: Department of Chemistry, D.A.V College, Jalandhar, Punjab, India. Electronic address: jaspreetbhatia81@gmail.com.
authors.forename: Jaspreet
authors.initials: J
authors.lastname: Bhatia
authors.affiliation: Research and Development Laboratory, Department of Chemistry, Dr B.R. Ambedkar National Institute of Technology, Jalandhar, Punjab, India. Electronic address: kaithbs@nitj.ac.in.
authors.forename: B S
authors.initials: BS
authors.lastname: Kaith
mesh_terms: D000327:Adsorption; D001576:Benzophenoneidum / Q000737:chemistry / Q000302:isolation & purification; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification*; D005780:Gelatin / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011135:Polysaccharides, Bacterial / Q000737:chemistry; D011142:Polyvinyl Alcohol / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry / Q000302:isolation & purification; D017550:Spectroscopy, Fourier Transform Infrared; D013644:Tartrates / Q000737:chemistry; D013696:Temperature; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D011108:Polymers; D011135:Polysaccharides, Bacterial; D012235:Rhodamines; D013644:Tartrates; D014874:Water Pollutants, Chemical; D001576:Benzophenoneidum; D005780:Gelatin; D011142:Polyvinyl Alcohol; C029773:rhodamine B; C002563:xanthan gum; C029768:tartaric acid
keywords: Adsorption isotherms; Cationic dyes; Gum xanthan-Gelatin hybrid back bone; RSM; Semi-IPN; Sorption kinetics