01161nas a2200205 4500008004100000022001400041245006400055210006400119260007300183300001200256490000800268520047000276653002100746653002000767653001800787653001400805100001600819700002200835856009800857 2005 eng d a1381-116900aCatalyzing Henry reactions in chloroaluminate ionic liquids0 aCatalyzing Henry reactions in chloroaluminate ionic liquids aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL a244-2480 v2353 a

Henry reactions can be accelerated in chloroaluminate room temperature ionic liquids. The choloroaluminates with higher compositions of organic species of the chloroaluminates prove to be more efficient rate promoters than the ones with lower organic species in catalyzing Henry reactions. involving both aliphatic and aromatic carbonyl compounds. The ionic liquids can be recycled five times to offer good yields. (c) 2005 Elsevier B.V. All rights reserved.

10achloroaluminates10aHenry reactions10aionic liquids10aRecycling1 aKumar, Anil1 aPawar, Sanjay, S. uhttps://library.ncl.res.in/content/catalyzing-henry-reactions-chloroaluminate-ionic-liquids-002789nas a2200265 4500008004100000022001400041245004700055210004700102260007300149300001200222490000700234520201400241653001502255653001002270653003302280653001302313653002502326653001902351653001402370653001002384100001802394700001402412700001702426856008002443 2006 eng d a0921-344900aPlastics materials flow analysis for India0 aPlastics materials flow analysis for India aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN a222-2440 v473 a

Forecasting material flows is essential for sound policy making on issues relating to waste management. This paper presents the results of the plastics materials flow analysis (MFA) for India. In the recent past, India has witnessed a substantial growth in the consumption of plastics and an increased production of plastic waste. Polyolefins account for the major share of 60% in the total plastics consumption in India. Packaging is the major plastics consuming sector, with 42% of the total consumption, followed by consumer products and the construction industry. The relationship observed between plastic consumption and the gross domestic product for several countries was used to estimate future plastics consumption (master curve). Elasticities of the individual material growth with respect to GDP were established for the past and for the next three decades estimated for India thereby assuming a development comparable with that of Western Europe. On this basis, the total plastics consumption is projected to grow by a factor of 6 between 2000 and 2030. The consumption of various end products is combined with their corresponding lifetimes to calculate the total waste quantities. The weighted average lifetime of plastics products was calculated as 8 years. Forty-seven percent of the total plastics waste generated is currently recycled in India; this is much higher than the share of recycling in most of the other countries. The recycling sector alone employs as many people as the plastics processing sector, which employs about eight times more people than the plastics manufacturing sector. Due to the increasing share of long-life products in the economy, and consequently in the volume of waste generated, the share of recycling will decrease to 35% over the next three decades. The total waste available for disposal (excluding recycling) will increase at least 10-fold up to the year 2030 from its current level of 1.3 million tonnes. (c) 2005 Elsevier B.V. All rights reserved.

10aemployment10aIndia10amaterial flow analysis (MFA)10aplastics10aplastics consumption10aplastics waste10aRecycling10areuse1 aMutha, N., H.1 aPatel, M.1 aPremnath, V. uhttps://library.ncl.res.in/content/plastics-materials-flow-analysis-india-002344nas a2200265 4500008004100000022001400041245014100055210006900196260007300265300001200338490000800350520135100358653002301709653002801732653002001760653001901780653001401799100002201813700002201835700002301857700002401880700002501904700002901929856012001958 2011 eng d a0926-337300aEfficiency and recycling capability of montmorillonite supported Fe-Ni bimetallic nanocomposites towards hexavalent chromium remediation0 aEfficiency and recycling capability of montmorillonite supported aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY a407-4140 v1043 a

The remediation of Cr(VI) from simulated water streams is investigated using Fe-Ni bimetallic nanoparticles (Fe-Ni NPs) and their nanocomposites prepared with montmorillonite (MMT) clay. These nanocomposites are characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) surface area analyses. XRD analysis revealed proper dispersion as well as intercalation of Fe-Ni NPs in the clay matrix. TEM of nanocomposites showed the presence of spherical particles having a size of 20-40 nm. Batch experiments with a 25 mg L(-1) Cr(VI) solution and 2 g L-1 Fe-Ni NPs exhibited complete reduction of Cr(VI) within 10 min that follows first order reaction kinetics. Amongst 25%, 50%, 75% in situ and loaded nanocomposites, 75% compositions possess better activity with enhanced reduction capacity below pH 4 due to generation of reactive H center dot species. XPS analysis of nanocomposites after Cr(VI) treatment suggested that reduction process occurs through Cr(111) formation followed by its subsequent reduction to Cr(0). Their potentiality towards reusage is established from the recycling experiments that revealed the order of efficiency as 75% in situ > Fe-Ni NPs > 75% loaded nanocomposites. (C) 2011 Elsevier B.V. All rights reserved.

10aCr(VI) remediation10aIron-nickel bimetallics10aMontmorillonite10aNanocomposites10aRecycling1 aKadu, Brijesh, S.1 aSathe, Yogesh, D.1 aIngle, Abhijit, B.1 aChikate, Rajeev, C.1 aPatil, Kashinath, R.1 aRode, Chandrashekhar, V. uhttps://library.ncl.res.in/content/efficiency-and-recycling-capability-montmorillonite-supported-fe-ni-bimetallic-001955nas a2200253 4500008004100000022001400041245007600055210006900131260000800200300001100208490000800219520119600227653001401423653001701437653002601454653001401480100002501494700001801519700002801537700001901565700002501584700002001609856007201629 2022 eng d a1385-894700aVitrimers based on bio-derived chemicals: overview and future prospects0 aVitrimers based on bioderived chemicals overview and future pros cAPR a1332610 v4333 aThe perspective of using recyclable and biobased materials in the vitrimeric concept is attractive, in view of the regulatory guidelines and pressing need to reduce CO2-emissions. The expansion of viable bio-based polymeric materials is gaining increased attention to achieve sustainable development goals. Although durability, cost, and performance still limit their real life applications, these limitations can be overcome through state-of-the-art bio-vitrimeric materials displaying thermoset like mechanical and thermal properties as well as thermoplastic like malleable and thus recyclable properties. Bio-derived chemicals based vitrimers can be of advantage, where material design is made from scratch, allowing to plan material properties in line with their future life cycle from the very beginning. This article emphasizes the current needs of vitrimers based on bio-derived chemicals, including their recycling, reprocessing, and self-healing properties, along with their advantages and potential obstacles from todays’ perspective. The article also identifies potential bio-derivatives as attractive building blocks for vitrimers because of their potential for sustainability.10aRecycling10aSelf-healing10aSustainable materials10aVitrimers1 aKrishnakumar, Balaji1 aPucci, Andrea1 aWadgaonkar, Prakash, P.1 aKumar, Indresh1 aBinder, Wolfgang, H.1 aRana, Sravendra uhttps://www.sciencedirect.com/science/article/pii/S138589472104836102655nas a2200229 4500008004100000022001400041245017700055210006900232260000800301300001100309490000800320520179500328653002002123653002702143653001402170653001402184653003002198100002902228700001702257700002302274856012802297 2025 eng d a0959-652600aRecycling textile dyeing effluent through ozonation: an environmentally sustainable approach for reducing freshwater and chemical consumption and lowering operational costs0 aRecycling textile dyeing effluent through ozonation an environme cJUN a1456410 v5103 a

Dyeing operations in textile industries require large quantities of freshwater, which creates handling challenges and generates wastewater with high organic load that is difficult to treat and incurs high treatment costs. Minimizing freshwater consumption is essential for adopting sustainable practices. A limited number of studies are available in the literature exploring the possibility of recycling dyeing effluent through ozonation as an ecofriendly approach. Therefore, in the present work, the recycling of effluents obtained after dyeing with Reactive Red 198 (RR198) and Reactive Blue 21 (RB21) dyes through ozonation treatment has been studied. Nearly complete decolourization with COD removal efficiency of 32 % was obtained for both dye effluents after 15 min of ozonation. The qualities of recycled dyed fabrics were compared to fresh water-dyed fabrics through spectrophotometric analysis and colour fastness tests. These qualities for both dyed fabrics with recycled effluent were found to be either in excellent or good category after each recycle. Comparative analysis of freshwater and chemical requirements, along with cost savings, was conducted over four dyeing attempts. The study revealed significant savings with recycled effluent dyeing including 60 % reduction in fresh water usage and 75 % in salt consumption compared to conventional freshwater dyeing. Thus, recycling textile dyeing effluent through ozonation treatment was found to be a resource efficient approach. This approach not only significantly reduces wastewater volumes but also freshwater demand without compromising the colour-related qualities of dyed fabrics. Additionally, it minimizes operational expenses, thereby, supporting textile industry's shift toward sustainable practices.

10aChemical saving10aFreshwater consumption10aOzonation10aRecycling10aTextile industry effluent1 aDeogaonkar-Baride, Smita1 aKoli, Mitesh1 aGhuge, Santosh, P. uhttps://library.ncl.res.in/content/recycling-textile-dyeing-effluent-through-ozonation-environmentally-sustainable-approach02092nas a2200229 4500008004100000022001400041245009700055210006900152260000900221300001200230490000700242520133000249653002101579653002301600653001501623653001401638653002501652100002001677700001901697700002101716856012501737 2025 eng d a1060-132500aWaste polyethylene to long-chain unsaturated esters and alcohols via alkene cross-metathesis0 aWaste polyethylene to longchain unsaturated esters and alcohols  cAUG  a660-6680 v623 a

The conversion of waste polyethylene into valuable long-chain functional molecules offers a contemporary solution to the global plastic waste challenge. This study presents a two-step catalytic approach, comprising of polyethylene (PE) dehydrogenation followed by cross-metathesis with renewable resource-derived functional olefins, catalyzed by the Grubbs-II catalyst (G-II). A dehydrogenated polyethylene (DHP) was subjected to a tandem catalytic cross-alkene metathesis with functional olefins under mild conditions to achieve approximately 36% conversion of DHP into valuable long-chain building blocks with controlled product distribution. Comprehensive characterization of intermediates and products was performed using NMR, GC, GC-MS, GPC, and DSC. In the alkene cross-metathesis with methyl-10-undecenoate, the product distribution consisted of 23% lower alkenes (C8-C14), 40% unsaturated long-chain mono-esters (C12-C18), and 37% unsaturated di-esters. In the case of 10-undecen-1-ol, the distribution included 20% lower alkenes (C8-C11), 32% unsaturated long-chain (C12-C18) mono-alcohols, and 48% unsaturated di-alcohols. This strategy opens up new opportunities for converting waste polyethylene into high-value chemical intermediates, enabling resource recovery and delivering environmental benefits.

10adepolymerization10afunctional olefins10aMetathesis10aRecycling10aValue-added products1 aKhopade, K., V.1 aBodkhe, D., V.1 aChikkali, S., H. uhttps://library.ncl.res.in/content/waste-polyethylene-long-chain-unsaturated-esters-and-alcohols-alkene-cross-metathesis