NDLI: Degradation of reactive, acid and basic textile dyes in the presence of ultrasound and rare earths [Lanthanum and Praseodymium].

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Degradation of reactive, acid and basic textile dyes in the presence of ultrasound and rare earths [Lanthanum and Praseodymium].

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Degradation of reactive, acid and basic textile dyes in the presence of ultrasound and rare earths [Lanthanum and Praseodymium].

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Srivastava, Pankaj Goyal, Shikha Patnala, Prem Kishore
Description	Author Affiliation: Srivastava P ( Department of Chemistry, Dayalbagh Educational Institute, Agra 282 005, India. Electronic address: pankaj2@bsnl.in.); Goyal S ( Department of Chemistry, Dayalbagh Educational Institute, Agra 282 005, India.); Patnala PK ( Department of Chemistry, Dayalbagh Educational Institute, Agra 282 005, India.)
Abstract	Degradation of five textile dyes, namely Reactive Red 141 (RR 141), Reactive Blue 21 (RB 21), Acid Red 114 (AR 114), Acid Blue 113 (AB 113) and Basic Violet 16 (BV 16) in aqueous solution has been carried out with ultrasound (US) and in combination with rare earth ions (La(3+) and Pr(3+)). Kinetic analysis of the data showed a pseudo-first order degradation reaction for all the dyes. The rate constant (k), half life (t1/2) and the process efficiency (φ) for various processes in degradation of dyes under different experimental conditions have been calculated. The influence of concentrations of dyes (16-40mg/L), pH (5, 7 and 9) and rare earth ion concentration (4, 12 and 20mg/L) on the degradation of dyes have also been studied. The degradation percentage increased with increasing rare earth amount and decreased with increasing concentration of dyes. Both horn and bath type sonicators were used at 20kHz and 250W for degradation. The sonochemical degradation rate of dyes in the presence of rare earths was related to the type of chromophoric groups in the dye molecule. Degradation sequence of dyes was further examined through LCMS and Raman spectroscopic techniques, which confirmed the sonochemical degradation of dyes to non-toxic end products.
File Format	HTM / HTML
ISSN	13504177
Issue Number	6
Journal	Ultrasonics Sonochemistry
Volume Number	21
e-ISSN	18732828
Language	English
Publisher	Elsevier
Publisher Date	2014-11-01
Publisher Place	Netherlands
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Diagnostic Imaging
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Environmental Chemistry Acoustics and Ultrasonics Radiology, Nuclear Medicine and Imaging Chemical Engineering Inorganic Chemistry

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