Results 101 to 110 of about 38,310 (254)

Spontaneous formation of optically induced surface relief gratings [PDF]

open access: yes, 2009
A model based on Fick's law of diffusion as a phenomenological description of the molecular motion, and on the coupled mode theory, is developped to describe single-beam surface relief grating formation in azopolymers thin films. It allows to explain the
Bellini B   +8 more
core   +4 more sources

Synthesizing polyethersulphone membranes with hybrid iron/nickel nanoparticles for dyes removal: An efficient biogenesis approach

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Industrial wastewater contamination by azo dyes poses a significant environmental challenge. This study reports the green synthesis of bimetallic iron/nickel (Fe/Ni) nanoparticles using moringa leaf extract, which acted as both a reducing and capping agent, and their incorporation into polyethersulphone (PES) membranes to produce eco‐friendly ...
Qusay A. Almajras   +7 more
wiley   +1 more source

Catalytic role of surfactants on the decolorization of mixed Azo dyes effluents (MDE) through Fenton advanced oxidation process (AOP)

open access: yesDiscover Chemistry
The kinetic studies of the decolorization of mixed azo dyes containing dyeing effluent (MDE) was been studied in both aqueous and aqueous-surfactant systems.
Abu Mohammad Azmal Morshed   +5 more
doaj   +1 more source

Molecular approaches for bacterial azoreductases [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2013
Azo dyes are the dominant types of synthetic dyes, widely used in textiles, foods, leather, printing, tattooing, cosmetics, and pharmaceutical industries. Many microorganisms are able to decolorize azo dyes, and there is increasing interest in biological
Montira Leelakriangsak
doaj  

A contribution for the identification of the azo reductase activity in intact yeast cells [PDF]

open access: yes, 2004
Poster apresentado no International Congress on Yeasts (ICY) -Yeasts in Science and Biotechnology : The Quest for Sustainable Development", 11, Rio de Janeiro, Brasil, Agosto 2004.Azo dyes are synthetic organic colorants which are extensively used in ...
Cardoso, M. Helena   +5 more
core  

Improved conditions for the aerobic reductive decolourisation of azo dyes by Candida zeylanoides [PDF]

open access: yes, 2002
A number of anaerobic and aerobic bacterial species are known to decolourise azo dyes through the reduction of the azo bonds, forming the corresponding amines.
Campos, Ana M. F. Oliveira   +4 more
core   +1 more source

Unravelling the initiator‐only stage in alginate grafting: Radical‐induced depolymerization and its impact on acrylamide grafting efficiency

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Free‐radical grafting of natural polymers often assumes that initiators only create active sites before monomer addition. We tested this by exposing sodium alginate to potassium persulphate (KPS) under typical grafting conditions without monomer (acrylamide).
Gustavo P. Zago, João B. P. Soares
wiley   +1 more source

Intergration of control chart and pattern recognizer for bivariate quality control [PDF]

open access: yes, 2015
Monitoring and diagnosis of mean shifts in manufacturing processes become more challenging when involving two or more correlated variables. Unfortunately, most of the existing multivariate statistical process control schemes are only effective in rapid ...
Mohd Sohaimi, Nurul Adlihisam
core  

Biodegradation of bioaccessible textile azo dyes by Phanerochaete chrysosporium [PDF]

open access: yes, 2000
Azo dyes are important chemical pollutants of industrial origin. Textile azo dyes with bioaccessible groups for lignin degrading fungi, such as 2-methoxyphenol (guaiacol) and 2,6-dimethoxyphenol (syringol), were synthesised using different aminobenzoic
Ferreira, Isabel C. F. R.   +4 more
core   +1 more source

Natural South African iron‐rich sand as a functional catalyst in hybrid photocatalytic wet peroxide oxidation technology for the degradation of methyl orange dye pollutant

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
This research explored South African iron‐rich sand (SAIRS) as a natural catalyst for light‐mediated wet peroxide oxidation of methyl orange dye in wastewater and at an optimized of conditions of 3500 mg/L catalyst dose, 6 mM H2O2, and pH 2.5, SAIRS achieved 94% methyl orange degradation within 90 min under visible light.
Aaliyah Ebrahim   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy