نتایج جستجو برای: hybrid of phenol formaldehyde

تعداد نتایج: 21197151  

Journal: :Bioscience, biotechnology, and biochemistry 2005
San-Chin Tsai Li-Duan Tsai Yaw-Kuen Li

An isolated yeast strain was grown aerobically on phenol as a sole carbon source up to 24 mM; the rate of degradation of phenol at 30 degrees C was greater than other microorganisms at the comparable phenol concentrations. This microorganism was further identified and is designated Candida albicans TL3. The catabolic activity of C. albicans TL3 for degradation of phenol was evaluated with the K...

Journal: :E-polymers 2023

Abstract This article proposes the preparation and microwave thermal cured (MTC) epoxy-modified phenolic fibers for first time. Epoxy-modified thermoplastic resin was prepared in acidic condition using phenol, formaldehyde, epichlorohydrin as reactants, then underwent additive reaction with formaldehyde to obtain thermosetting resin, which converted into nascent through wet spinning. Finally, w...

2012
Bekir Cihad Bal İbrahim Bektaş

In this study, the impact bending strengths and specific impact bending strengths were determined for solid wood and laminated veneer lumber (LVL) produced from eucalyptus (Eucalyptus grandis W. Hill ex Maiden), poplar (Populus x euramericana I-214), and beech (Fagus orientalis L.) woods using urea formaldehyde (UF), melamine urea formaldehyde (MUF), and phenol formaldehyde (PF) adhesives. The ...

2008
C. Indu Nair K. Jayachandran Shankar Shashidhar

The use of microbial catalysts in the biodegradation of organic compounds has advanced significantly during the past three decades. It has been found that large numbers of microbes co-exist in almost all natural environments, particularly in soils. Many natural and synthetic organic chemicals are readily biodegradable in natural environment. Biodegradation of materials involve initial proximity...

2014

The present study analyses the potential of acid treated chitosan for simultaneous co-adsorptive removal of phenol and cyanide from a binary waste water solution. The effects of parameters like pH, temperature, initial concentration, adsorbent dose, and adsorbent size were studied. At an optimum pH of 8, temperature of 300C, initial phenol and cyanide concentration of 200 mg/L and 20 mg/L respe...

2011
Sasi Sigawi Olha Demkiv Galina Gayda Yeshayahu Nitzan Mykhaylo Gonchar Marina Nisnevitch

Formaldehyde (FA) is a very toxic pollutant. FA in indoor air has a negative effect on human health and should be removed by ventilation or by conversion to non-toxic products. The formaldehyde dehydrogenase (FdDH), a NADand glutathione-dependent enzyme from recombinant methylotrophic yeast Hansenula polymorpha, was tested for its ability to oxidize airborne FA. A continuous fluidized bed biore...

2011
Lihong Hu Hui Pan Yonghong Zhou Meng Zhang

Lignin is readily available as a by-product from the pulp and paper industry. It is considered to be a promising substitute for phenol in phenol-formaldehyde (PF) resin synthesis, given the increasing concerns of the shortage of fossil resources and the environmental impact from petroleum-based products. One hurdle that prevents the commercial utilization of lignin is its low reactivity due to ...

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