نتایج جستجو برای: chlorophenol

تعداد نتایج: 779  

Journal: :Acta crystallographica. Section B, Structural science 2005
Pamela A McGregor David R Allan Simon Parsons Colin R Pulham

The low-temperature and high-pressure crystal structures of cyclobutanol (C4H7OH) have been determined using single-crystal X-ray diffraction techniques. At temperatures below 220 K, cyclobutanol crystallizes in the Aba2 space group (Z' = 2) and its crystal structure is composed of pseudo-threefold hydrogen-bonded molecular catemers [assigned as C_2;2(4) in graph-set notation], which lie parall...

Journal: :Journal of hazardous materials 1999
J G Lin Y S Ma

In the present work, decomposition of o-chlorophenol (2-cp) was carried out using an ultrasonic process. The extent of 2-cp decomposition depends on several parameters such as ultrasound wave energy (ultrasonic amplitude), addition of hydrogen peroxide (H2O2), pH value (H+ concentration), ionic strength, and initial concentration of 2-cp. The experimental results showed that the decomposition o...

Journal: :The Analyst 2016
Deyu Fang Guanyue Gao Yuan Yu Jie Shen Jinfang Zhi

In this study, a new method for acute biotoxicity assessment was proposed by measuring the glucose consumption of microbes with a personal glucose meter (PGM). To obtain an ideal biotoxicity assessment performance, an appropriate microbe was selected first, and then the relevant parameters, such as temperature and microbial concentration were optimized. Under the optimized parameters, the acute...

2012
J. C. Ferrer F. Peiró J. R. Morante F. Briones

Related Articles Nano-lithography free formation of high density Ge-on-insulator network for epitaxial template Appl. Phys. Lett. 100, 092111 (2012) Thermal properties of the hybrid graphene-metal nano-micro-composites: Applications in thermal interface materials Appl. Phys. Lett. 100, 073113 (2012) Efficiently recyclable magnetic core-shell photocatalyst for photocatalytic oxidation of chlorop...

2012
S. K. DATIR

Flavones and chromanones are known to be biologically important compounds over 4000 chemically unique flavanoids have been identified in plant sources. These low-molecular-weight substances, found in all vascular plants, with an assortment of basic structure of phenyl benzopyrones (phenyl chromones). In the present work 2-hydroxy pyrimidine and 2-mercapto pyrimidine were prepared from phenol i....

2007
A. Bódalo J. L. Gómez J. Bastida M. F. Máximo

A comparative study of the two most widely used commercial peroxidases (E.C. 1.11.1.7) for removing 4-chlorophenol from aqueous industrial effluents is presented. Both the peroxidases tested, horseradish peroxidase (HRP) and soybean peroxidase (SBP), showed maximal removal efficiency in a neutral pH medium although they maintained more than 70 % of their activity in a pH range of between 6.0 an...

1999
Xiaojing Li Jerry W. Cubbage William S. Jenks

The TiO2-mediated photocatalytic degradation of 4-chlorocatechol is studied as a branch of the degradation of 4-chlorophenol. In addition to some basic kinetic studies, the identities of many of the cyclic and acyclic intermediates, verified in most cases with authentic samples, are reported. From 4-chlorocatechol, the major product is hydroxylation to form 5-chloro-1,2,4-benzenetriol. A small ...

Journal: :Bioresource technology 2009
Gulay Bayramoglu Ihsan Gursel Yagmur Tunali M Yakup Arica

The removal of phenol (Ph) and 2-chlorophenol (2-CPh) from aqueous solution by native and heat inactivated fungus Funalia trogii pellets were investigated. The effects of contact time, solid/liquid ratio, optimum pH and temperature on the phenols removal capacity by the pellets were established. The removal efficiency of phenols increased significantly with increasing biomass dose. The optimum ...

Journal: :Applied and environmental microbiology 1994
M H Smith S L Woods

Vitamin B(12), reduced by titanium (III) citrate to vitamin B(12s), catalyzes the reductive dechlorination of chlorophenols. Reductive dechlorination of pentachlorophenol and of all tetrachlorophenol and trichlorophenol isomers was observed. Reaction of various chlorophenols with vitamin B(12) favored reductive dechlorination at positions adjacent to another chlorinated carbon, but chlorines or...

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