01614nas a2200253 4500008004100000022001400041245006500055210006500120260011000185300001400295490000700309520072400316653003601040653002701076653001301103653002401116653002101140653002101161100001901182700001901201700001901220700001901239856010201258 2012 eng d a0376-471000aCarbon dioxide capture using amine functionalized silica gel0 aCarbon dioxide capture using amine functionalized silica gel aDR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIAbNATL INST SCIENCE COMMUNICATION-NISCAIRcSEP a1214-12220 v513 a

Commercially available silica gel is chemically modified for carbon dioxide capture. Calcinated silica gel of certain particle size functionalized with amine using two different methods, wet impregnation and grafting via silane chemistry has been employed as a porous media. The prepared material is characterized by Fourier transform infrared, scanning electron microscopy, energy dispersive analysis of X-rays, thermogravimetry and N-2 physisorption techniques. Gas uptake measurements have been carried out to ascertain the CO2 capture capacity of the amine functionalized material. The experiments have been carried out at moderate pressure and temperature range to ascertain its potential for easy scale up.

10aAmine functionalized silica gel10aCarbon dioxide capture10agrafting10aPoly(ethyleneimine)10aSilane chemistry10aWet impregnation1 aSakpal, Tushar1 aKumar, Asheesh1 aKamble, Sanjay1 aKumar, Rajnish uhttps://library.ncl.res.in/content/carbon-dioxide-capture-using-amine-functionalized-silica-gel-001932nas a2200181 4500008004100000022001400041245013900055210006900194260007100263300001400334490000700348520118800355100002201543700001901565700002001584700002701604856011901631 2016 eng d a0888-588500aChitosan-based lead ion-imprinted interpenetrating polymer network by simultaneous polymerization for selective extraction of lead(ii)0 aChitosanbased lead ionimprinted interpenetrating polymer network a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR a3668-36780 v553 a

In this study, we report the synthesis of a Pb(II) ion-imprinted interpenetrating polymer network (II-IPN) by simultaneous polymerization for selective extraction of Pb(II) from printed-circuit-board (PCB) recycling unit wastewater. Initially, a polymer network was synthesized by polymerization of methacrylic acid (monomer) and ethylene glycol dimethacrylate (cross-linker) and a second polymer network by chitosan (complexing monomer) and tetraethyl orthosilicate (cross-linker). The chemical structure and morphology of the II-IPN were analyzed using Fourier transform infrared, field-emission scanning electron microscopy, atomic force microscopy, and transmission electron microscopy. The interaction of the functionality in the II-IPN with Pb(II) through chelation was studied by X-ray photoelectron spectroscopy analysis. The maximum adsorption capacities for II-IPN and nonimprinted interpenetrating polymer network were 37.5 and 10.3 mg g(-1), respectively. The largest selectivity coefficient for Pb(II) in the presence of W(VI) was 161.58. The developed Pb(II) II-IPN was successfully employed for selective extraction of Pb(II) from PCB recycling unit wastewater.

1 aHande, Pankaj, E.1 aKamble, Sanjay1 aSamui, Asit, B.1 aKulkarni, Prashant, S. uhttps://library.ncl.res.in/content/chitosan-based-lead-ion-imprinted-interpenetrating-polymer-network-simultaneous02254nas a2200265 4500008004100000022001400041245012600055210006900181260000800250300001100258490000700269520136700276653002501643653002801668653001401696653001001710653001501720653002701735100002001762700002201782700001901804700001901823700001901842856012701861 2023 eng d a2213-292900aComparative evaluation of advanced oxidation processes (AOPs) for reducing SARS-CoV-2 viral load from campus sewage water0 aComparative evaluation of advanced oxidation processes AOPs for  cJUN a1096730 v113 a

Presence of SARS-CoV-2 in wastewater is a major concern as the wastewater meets rivers and other water bodies and is used by the population for various purposes. Hence it is very important to treat sewage water in an efficient manner in order to reduce the public health risk. In the present work, various advanced oxidation processes (AOPs) have been evaluated for disinfection of SARS-CoV-2 from sewage water collected from STP inlet of academic institutional residential. The sewage water was subjected to ten AOPs, which include Ozone (O3), Hydrodynamic cavitation (HC), Ultraviolet radiation (UV), and their hybrid combinations like HC/O3, HC/O3/ H2O2, HC/H2O2, O3/UV, UV/H2O2, UV/H2O2/O3, and O3/H2O2 to reduce SARS-CoV-2 viral load. Further, AOP treated sewage water was subjected to total nucleic acid isolation followed by RT-qPCR for viral load estimation. The sewage water treatment techniques were evaluated based on their viral concentration-reducing efficiency. It was found that ozone and ozone-coupled hybrid AOPs showed the most promising result with more than 98 % SARS-CoV-2 viral load reducing efficiency from sewage water. Interestingly, the best six AOPs used in this study significantly reduced both the SARS-CoV-2 and PMMoV (faecal indicator) viral load and improved water quality in terms of increasing DO and decreasing TOC.

10aAOPs and hybrid AOPs10aHydrodynamic cavitation10aOzonation10aPMMoV10aSARS-CoV-210aSewage water treatment1 aPramanik, Rinka1 aBodawar, Narendra1 aBrahme, Aashay1 aKamble, Sanjay1 aDharne, Mahesh uhttps://library.ncl.res.in/content/comparative-evaluation-advanced-oxidation-processes-aops-reducing-sars-cov-2-viral-load