A novel approach for the synthesis of hydrogel nanoparticles and a removal study of reactive dyes from industrial effluent

RSC Advances ◽  
2016 ◽  
Vol 6 (26) ◽  
pp. 21577-21589 ◽  
Author(s):  
Viran P. Mahida ◽  
Manish P. Patel
Keyword(s):  
Allyl Bromide ◽  
Industrial Effluent ◽  
Allyl Chloride ◽  
Reactive Dyes ◽  
Hydrogel Nanoparticles ◽  
Novel Approach ◽  
Isonipecotic Acid

A novel amphoteric monomer, N,N-diallyl carboxypiperidinium bromide (DACPB), has been synthesized by the stepwise condensation of isonipecotic acid to an ester and then with allyl chloride and allyl bromide.

Novel approach for selective recovery of gold, copper, and iron as marketable product from industrial effluent

Gold Bulletin ◽  
2020 ◽  
Vol 53 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Rekha Panda ◽  
Om Shankar Dinkar ◽  
Manis Kumar Jha ◽  
Devendra Deo Pathak
Keyword(s):  
Industrial Effluent ◽  
Selective Recovery ◽  
Novel Approach

scholarly journals Electrochemical Degradation of Reactive Dyes in Textile Industrial Wastewater by Modified Electrodes

2021 ◽  
Author(s):  
Getasew Yehuala Gezahegn
Keyword(s):  
Reaction Time ◽  
Industrial Wastewater ◽  
Electrolyte Concentration ◽  
Industrial Effluent ◽  
Reactive Dyes ◽  
Oxalic Acid Solution ◽  
Color Removal ◽  
Dominant Factor ◽  
Electrochemical Degradation ◽  
Design Expert

Abstract This research was formulated to introduce an electrochemical degradation for the degradation of reactive dyes of the textile industrial wastewater applying a full factorial experimental design. Electrochemical degradation is a green process which immensely reduces the chemical consumption of the wastewater leaving no impurities. Three factors with three-levels were used i.e. the NaCl electrolyte concentrations of 2, 4.5, 5.8 g/L, pH 4.2, 5.8, and 6.9, and reaction time 12.4, 15.5, and 20 min. The experiment was expected to generate 27 runs but due to the Design Expert 12, the number of experimental runs became 20. DC power supply of 14.6 V was used for the electrochemical degradation system whereas chemicals such as nitric acid (400 g/L), sulphuric acid (1.5 mg/L), and oxalic acid solution (100 g/L) were used for surface modification of the electrodes. The textile industrial wastewater was characterized based on the standard method of APHA. Dye, COD, BOD5, and pH of the textile industrial effluent were found to be 0.35 ± 1.00 Abs., 1,711.55 ± 2.00 mg/L, 450.00 ± 3.00 mg/L, and pH of 6.63 ± 0.30, respectively. The maximum color removal was 94.89% at the optimum experimental condition after the results validated by design expert 12. These optimum conditions were the electrolyte concentration 5.1 g/L, pH 6.5, and reaction time 17 min, whereas the minimum color removal of 63.0% was recorded. The regression analysis of the color removal (R2 = 0.95) depicts that electrolyte concentration was the dominant factor for the electrochemical degradation.

Synthesis of a novel brominated vinylic fatty acid with antileishmanial activity that effectively inhibits the Leishmania topoisomerase IB enzyme mediated by halogen bond formation

2019 ◽  
Vol 91 (8) ◽  
pp. 1405-1416
Author(s):  
Néstor M. Carballeira ◽  
Denisse Alequín ◽  
Leilani M. Lotti Diaz ◽  
Victorio Jauregui Matos ◽  
Leonardo L. G. Ferreira ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Allyl Bromide ◽  
Halogen Bond ◽  
Allyl Chloride ◽  
Phosphate Binding ◽  
Dna Topoisomerase ◽  
Synthetic Compounds ◽  
Topoisomerase Ib ◽  
Independent Mechanism ◽  
Palladium Catalyzed

AbstractMany marine derived fatty acids, mainly from sponges, possess vinylic halogenated moieties (bromine or iodine) but their assessment as antileishmanial candidates remains elusive. In this work, we undertook the first total synthesis of a novel series of 2-allyl-3-halo-2-nonadecenoic acids, which preferentially inhibit theLeishmaniaDNA topoisomerase IB enzyme (LTopIB) over the human topoisomerase IB enzyme (hTopIB). The synthesis of 2-allyl-3-bromo-2E-nonadecenoic acid (1a) and 2-allyl-3-chloro-2E-nonadecenoic acid (2a) was achieved through a palladium catalyzed haloallylation of 2-nonadecynoic acid (2-NDA) using either allyl bromide or allyl chloride in the presence of PdCl2(PhCN)2in 57–83 % overall yields. Among the new halogenated synthetic compounds,1awas the most inhibitory ofLTopIB with an EC50 = 7 μM, while the shorter chain analogs 2-allyl-3-bromo-2E-dodecenoic acid (1b) and 2-allyl-3-chloro-2E-dodecenoic acid (2b), synthesized from 2-dodecynoic acid, were not inhibitory ofLTopIB (EC50 > 100 μM) resulting in the overall order of inhibition1a > 2-NDA > 2a > > 1b ≅ 2b. The acids1aand2ainhibitLTopIB by a Gimatecan-independent mechanism. The enhancedLTopIB inhibition of1awas computationally rationalized in terms of a halogen bond between the bromine in1aand a DNA phosphate (binding energy = − 4.85 kcal/mol). Acid1aalso displayed preferential cytotoxicity towardsLeishmania infantumamastigotes (EC50 = 2.5 μM) overL. infantumpromastigotes (EC50 > 25 μM).

Metalltrifluorphosphin-Komplexe. XXXIX / Metaltrifluorophosphine Complexes. XXXIX

1973 ◽  
Vol 28 (1-2) ◽  
pp. 34-37 ◽  
Author(s):  
Thomas Kruck ◽  
Lothar Knoll
Keyword(s):  
Uv Irradiation ◽  
Mass Spectra ◽  
Allyl Bromide ◽  
Allyl Chloride ◽  
Analogous Reaction ◽  
H Nmr

The UV-irradiation of solutions of allyl jodide and allyl bromide, respectively, and Fe (PF3)5 yields π-allyl-tris(trifluorophosphine)-iron halides, π-C3H5Fe(PF3)3X (X = J, Br). Otherwise, the analogous reaction with allyl chloride yields the diene complexe π-hexa-1.3-diene-tris(trifluorophosphine)-iron (O), π-C6H10Fe(PF3)3. The compounds are characterised by their IR-,1H-NMR-and mass spectra.

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