Results 281 to 290 of about 211,120 (337)

Dissociation of phenols and phenolate salts and homocomplexation in the corresponding phenol–phenolate systems in benzonitrile

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1985
The acidities of 12 substituted phenols (pKBNa relative to the pKBNa of HClO4) and the formation constants of the corresponding homocomplexes, KAHA, in benzonitrile have been determined from e.m.f. measurements. Comparison with previous results reveals that the stability of homocomplexes increases in aprotic solvents in the order acetonitrile ...
Józef Magoński, Zenon Pawlak, Frank Strohbusch   +2 more
openaire   +2 more sources

Phenol and substituted phenols AOPs remediation

Journal of Hazardous Materials, 2005
The oxidation of phenol and two substituted species (4-nitrophenol and 4-chlorophenol) has been carried out by means of the O3, UV-vis, O3+UV-vis, TiO2+UV-vis, O(3)+UV-vis+TiO2 and O3+TiO2 systems. From UV-vis experiments, the quantum yield of these organics has been calculated (0.018, 0.005 and 0.017 mol per Einstein for phenol, 4-nitrophenol and 4 ...
Fernando J. Beltrán, F. Javier Rivas, Maria Carbajo, Olga Gimeno   +3 more
openaire   +3 more sources

Phenol Peeling and the History of Phenol Peeling

Clinics in Plastic Surgery, 1998
Historically, phenol peeling has been embraced by plastic surgeons as the method of choice for improving the appearance of coarse facial rhytides. The principal advantage of phenol peeling is its predictability: it requires no pretreatment regime. This article details the technical aspects of phenol peeling, its uses and limitations, as well as methods
openaire   +5 more sources

Microbial Degradation of Phenol and Phenolic Compounds

2021
Phenol and phenolic compounds play an essential role in various modern-day industries. However, due to the toxic and recalcitrant nature of phenolic compounds, these compounds have a detrimental effect on the environment and aquatic life. In the recent past, different physicochemical methods have been employed by various researchers for phenol ...
Milan Malhotra, Sanjay Singh, Divya Gupta, Jeetendra Sahani   +3 more
openaire   +2 more sources

Catalytic ethoxylation of phenol and phenol derivatives

Reaction Kinetics and Catalysis Letters, 1980
The kinetics of catalytic mono- and polyethoxylation of phenol, p-cumyl-phenol and p-isooctylphenol have been studied in the presence of strongly basic anion exchanger Wofatit SBW in hydroxy form. The influence of substituents on the rate has been investigated and the mechanism of the reaction is discussed.
S. V. Kotov, K. M. Markov, R. S. Boeva
openaire   +2 more sources

BIODEGRADATION OF PHENOLS BY MICROALGAE

Biotechnology Letters, 2002
Two green microalgae, Ankistrodesmus braunii and Scenedesmus quadricauda, degraded phenols (each tested at 400 mg ml−1) selected from olive-oil mill wastewaters, within 5 days, with a removal greater than 70%. Green algae may, therefore, represent an alternative to other biological treatment used for the biodegradation of phenol-containing wastewaters.
POLLIO, ANTONINO, PINTO, GABRIELE, PREVITERA, LUCIO, TEMUSSI F.   +3 more
openaire   +7 more sources

Kinetics of Ozonation of Phenol and Substituted Phenols

Industrial & Engineering Chemistry Research, 2019
In the treatment of wastewaters contaminated with phenol and substituted phenols, an intermediate chemical step of partial oxidation is often employed to facilitate the ensuing biodegradation process. Ozonation is a candidate technique for partial oxidation of phenolics.
R.N. Patil, Jyeshtharaj B. Joshi, Jyeshtharaj B. Joshi, Ghanshyam S. Bhosale, Prakash D. Vaidya   +4 more
openaire   +2 more sources

PHENOL–DIENONE REARRANGEMENT IN THE REACTIONS OF PHENOLS [PDF]

Russian Chemical Reviews, 1963
CONTENTS I. Introduction 75 II. Effect of structure of phenol on ease of formation of dienone compounds 75 III. Halogenation of phenol. Tribromophenol bromide 78 IV. Halogenation of alkylphenols 79 V. Reactivity of quinohalide compounds. Problem of methylenequinone 82 VI. Nitration of phenols 84 VII. Alkylation of phenols 85 VIII. Formation of dienones
A A Volod'kin, V V Ershov, G N Bogdanov
openaire   +1 more source

The metabolism of phenol and substituted phenols in zebra fish

Xenobiotica, 1987
1. The metabolism of five phenols in zebra fish was studied after uptake from the medium. The results showed no qualitative differences to other Cyprinid fish species, only the oxidation rate seemed to be lower. 2. Phenyl glucuronide, phenyl sulphate, and quinol sulphate were identified as metabolites of phenol. 3.
T. Kasokat, Roland Nagel, Klaus Urich
openaire   +3 more sources