Bisphenol A synthesis – modeling of industrial reactor and catalyst deactivation

Prokop, Zdeněk; Hanková, Libuše; Jeřábek, Karel

doi:10.1016/j.reactfunctpolym.2004.02.013

Cited by 25 publications

(12 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this section, the SVM training method based on particle filters is evaluated through its application to a simulation of Bisphenol A (BPA) production process [18]. The results of the extended Kalman filter (EKF) [19] are presented for comparison.…”

Section: Simulation Resultsmentioning

confidence: 99%

A Learning Method of Support Vector Machine Based on Particle Filters

Cheng

Yang

2009

2009 Fifth International Conference on Natural Computation

View full text Add to dashboard Cite

Support vector machine (SVM) is a novel and popular technique for pattern classification and regression estimation. In the training process of SVM it is of great importance to determine a few tuning parameters to ensure the good performance of SVM. However, the widely used optimization methods such as Particle Swarm Optimization and Genetic Algorithm have the disadvantages of low convergent speed and limited overall searching ability. To solve this problem, this paper proposes an alternative approach whereby particle filters are used to estimate the key parameters in the training process of SVM. The SVM model built in this way is used to estimate process variables in the production of Bisphenol A. Simulations show the effectiveness of this method.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

A Learning Method of Support Vector Machine Based on Particle Filters

Cheng

Yang

2009

2009 Fifth International Conference on Natural Computation

View full text Add to dashboard Cite

show abstract

“…BFA, iki mol fenolün bir mol aseton ile düşük pH'da ve yüksek sıcaklıkta kondensasyonu ile elde edilmektedir. Genelde üretilen BFA %99-99.8 saflıkta olmaktadır [15]. BFA katı, fenolik kokulu, krem-beyaz renkte, kristal yapıdadır (Şekil 3).…”

Section: Bisfenol A'nın Genel öZellikleriunclassified

Endocrine Disruptive Chemicals: Nonylphenol and Bisphenol A

Zemheri

Uğuz

2018

Marmara Fen Bilimleri Dergisi

View full text Add to dashboard Cite

ÖzTeknoloji ve bilimin ilerlemesi, insan hayatını önemli ölçüde kolaylaştırmış ancak çeşitli olumsuzlukları da beraberinde getirmiştir. Çevrede mevcut olan kimyasallar canlılığı olumsuz yönde etkilemektedir. Bu maddeler gıda katkı maddeleri, kozmetik ve ilaç sanayide kullanılan kimyasallar, pestisitler, herbisitler, sigara dumanı ve alkoller gibi bileşiklerdir. Kirleticilerin canlıların sağlığı üzerindeki olası olumsuz etkileri giderek artmakta özellikle de canlıların endokrin sistemini etkilemektedir. Endokrin bozucu kimyasalların başında çoğu endüstride kullanılan nonilfenol (NF) ve bisfenol A (BFA) gibi bileşikler yer almaktadır. Genelde parçalanabilir olan bu maddeler arıtma tesislerinde uzaklaştırılabilmelerine rağmen, indirgenmiş konsantrasyonlarda atık sularla nehir ve çaylara (akarsulara) verilmektedir. Bu şekilde de biyolojik döngüye katılarak biyokütle tarafından depolanmaktadır. Ksenoöstrojenik olarak adlandırılan bu kimyasallar, endüstride ve evlerdeki çeşitli kullanımları yanında, deterjan, sabun ve temizlik maddelerinin ana bileşeni olarak da büyük önem taşımaktadır. Bu kimyasalların çoğu veya bunların parçalanma ürünleri mutajenik, östrojenik, toksik veya karsinojenik olabilmektedir. Ayrıca üreme ve gelişmede görev yapan östrojen, progesteron, androjen ve diğer hormonların metabolik faaliyetlerini, hormon reseptör bölgelerine bağlanarak hormon gibi davranarak veya doğal hormonun spesifik reseptör bölgesine bağlanmasını engelleyerek anti-hormonal etki gösterebildiğinden, endişelerin ortaya çıkmasına neden olmaktadır. Bu nedenle NF ve BFA'nın olası dolaylı veya direkt etkilerinin moleküler düzeyde incelenmesi önem arz etmekte ve önemli araştırma konuları arasında olduğu öngörülmektedir.Anahtar kelimeler: Endokrin bozucu kimyasallar, Nonilfenol, Bisfenol A, çevre, gen AbstractThe improvement of technology and science has facilitated human, but these brought various negative effects. The chemicals that exist in the environment affects the vitality negatively. These compounds are such as food additives, cosmetics and medicines used in industry, pesticides, herbicides, cigarette smoke and alcohols. The possible negative effects of pollutants on the health of living beings are increasing. These especially affect the endocrine system of living things. Endocrine disrupting chemical compounds are nonylphenol (NP) and bisphenol A (BPA) which are most commonly used in the industry. These degradable materials are removed at the treatment facility, but reduced concentrations of them are given to rivers and streams. In this way, they participate in the biological cycle and stored by the biomass. These chemicals are called xenoestrogens, and they have various usage at home and industry. In addition to these, they have great importance as the main component of detergents, soaps and cleaners. Most of them or their decomposition products may be mutagenic, estrogenic, toxic or carcinogenic. In addition, they could block the metabolic activities of estrogen, progesterone, androgen and other hormones by means of adherin...

show abstract

“…Phenolic compounds are chemically defined as compounds containing hydroxylated aromatic rings, which comprise the hydroxy group attached directly to the phenyl, substituted phenyl, or other aryl groups. Bisphenol A (BPA) is a white crystal substance produced commercially by strong acid-catalyzed condensation of phenol and acetone under mild conditions of temperature and pressure [ 1 ]. Nowadays, BPA is a chemical compound abundantly used in the manufacture of many plastics, such as some plastic bottles, medical disposable devices, sport protective equipment, surface coatings, or daily used disposable products, for example, straws, cutlery, plates, or cups [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Acute Exposure to Bisphenol A Causes Oxidative Stress Induction with Mitochondrial Origin in Saccharomyces cerevisiae Cells

Ďurovcová

Goffa

Šestáková

et al. 2021

JoF

View full text Add to dashboard Cite

Bisphenol A (BPA) is a major component of the most commonly used plastic products, such as disposable plastics, Tetra Paks, cans, sport protective equipment, or medical devices. Due to the accumulation of excessive amounts of plastic waste and the subsequent release of BPA into the environment, BPA is classified as a pollutant that is undesirable in the environment. To date, the most interesting finding is the ability of BPA to act as an endocrine disrupting compound due to its binding to estrogen receptors (ERs), and adverse physiological effects on living organisms may result from this action. Since evidence of the potential pro-oxidizing effects of BPA has accumulated over the last years, herein, we focus on the detection of oxidative stress and its origin following BPA exposure using pulsed-field gel electrophoresis, flow cytometry, fluorescent microscopy, and Western blot analysis. Saccharomyces cerevisiae cells served as a model system, as these cells lack ERs allowing us to dissect the ER-dependent and -independent effects of BPA. Our data show that high concentrations of BPA affect cell survival and cause increased intracellular oxidation in yeast, which is primarily generated in the mitochondrion. However, an acute BPA exposure does not lead to significant oxidative damage to DNA or proteins.

show abstract

Bisphenol A synthesis – modeling of industrial reactor and catalyst deactivation

Cited by 25 publications

References 6 publications

A Learning Method of Support Vector Machine Based on Particle Filters

A Learning Method of Support Vector Machine Based on Particle Filters

Endocrine Disruptive Chemicals: Nonylphenol and Bisphenol A

Acute Exposure to Bisphenol A Causes Oxidative Stress Induction with Mitochondrial Origin in Saccharomyces cerevisiae Cells

Contact Info

Product

Resources

About