Littérature scientifique sur le sujet « PHB solvent extraction »
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Articles de revues sur le sujet "PHB solvent extraction"
Ibrahim, Mohammad H. A., et Alexander Steinbüchel. « Poly(3-Hydroxybutyrate) Production from Glycerol by Zobellella denitrificans MW1 via High-Cell-Density Fed-Batch Fermentation and Simplified Solvent Extraction ». Applied and Environmental Microbiology 75, no 19 (7 août 2009) : 6222–31. http://dx.doi.org/10.1128/aem.01162-09.
Texte intégralMontiel-Jarillo, Gabriela, Diego A. Morales-Urrea, Edgardo M. Contreras, Alex López-Córdoba, Edwin Yesid Gómez-Pachón, Julián Carrera et María Eugenia Suárez-Ojeda. « Improvement of the Polyhydroxyalkanoates Recovery from Mixed Microbial Cultures Using Sodium Hypochlorite Pre-Treatment Coupled with Solvent Extraction ». Polymers 14, no 19 (21 septembre 2022) : 3938. http://dx.doi.org/10.3390/polym14193938.
Texte intégralSamrot, Antony V., Sree K. Samanvitha, N. Shobana, Emilin R. Renitta, P. Senthilkumar, Suresh S. Kumar, S. Abirami et al. « The Synthesis, Characterization and Applications of Polyhydroxyalkanoates (PHAs) and PHA-Based Nanoparticles ». Polymers 13, no 19 (27 septembre 2021) : 3302. http://dx.doi.org/10.3390/polym13193302.
Texte intégralRocha, Marisa Cristina Guimarães, Nancy Isabel Alvarez Acevedo et Carlos Eduardo Nazareth de Oliveira. « Mechanical and Morphological Properties of PHB/Oil-Free Coffee Dregs (OFCD) Composites ». Materials Science Forum 1079 (26 décembre 2022) : 93–102. http://dx.doi.org/10.4028/p-k5hv1o.
Texte intégralFiorese, Mônica Lady, Filomena Freitas, Joana Pais, Ana Maria Ramos, Gláucia M. F. de Aragão et Maria A. M. Reis. « Recovery of polyhydroxybutyrate (PHB) from Cupriavidus necator biomass by solvent extraction with 1,2-propylene carbonate ». Engineering in Life Sciences 9, no 6 (décembre 2009) : 454–61. http://dx.doi.org/10.1002/elsc.200900034.
Texte intégralB, Viswapriya, Balamurugan V et Jayaprakash K. « ISOLATION OF SEAWEED ASSOCIATED BACTERIA'S AND THEIR PRODUCTION OF BIOPOLYMER BY SOLID-STATE FERMENTATION ». International journal of multidisciplinary advanced scientific research and innovation 1, no 7 (30 septembre 2021) : 134–41. http://dx.doi.org/10.53633/ijmasri.2021.1.7.04.
Texte intégralFilippi, Sara, Patrizia Cinelli, Andrea Mezzetta, Pietro Carlozzi et Maurizia Seggiani. « Extraction of Polyhydroxyalkanoates from Purple Non-Sulfur Bacteria by Non-Chlorinated Solvents ». Polymers 13, no 23 (28 novembre 2021) : 4163. http://dx.doi.org/10.3390/polym13234163.
Texte intégralMartínez-Herrera, Raul E., María E. Alemán-Huerta, Verónica Almaguer-Cantú, Walfred Rosas-Flores, Víctor J. Martínez-Gómez, Isela Quintero-Zapata, Gildardo Rivera et O. Miriam Rutiaga-Quiñones. « Efficient recovery of thermostable polyhydroxybutyrate (PHB) by a rapid and solvent-free extraction protocol assisted by ultrasound ». International Journal of Biological Macromolecules 164 (décembre 2020) : 771–82. http://dx.doi.org/10.1016/j.ijbiomac.2020.07.101.
Texte intégralde Oliveira Schmidt, Vanessa Kristine, Evelise Fonseca dos Santos, Débora de Oliveira, Marco Antônio Záchia Ayub, Karina Cesca, Paulo Roberto Dall Cortivo, Cristiano José de Andrade et Lilian Raquel Hickert. « Production of Polyhydroxyalkanoates by Bacillus megaterium : Prospecting on Rice Hull and Residual Glycerol Potential ». Biomass 2, no 4 (16 décembre 2022) : 412–25. http://dx.doi.org/10.3390/biomass2040026.
Texte intégralDunnivant, Frank M., et Alan W. Elzerman. « Determination of Polychlorinated Biphenyls in Sediments, Using Sonication Extraction and Capillary Column Gas Chromatography-Electron Capture Detection with Internal Standard Calibration ». Journal of AOAC INTERNATIONAL 71, no 3 (1 mai 1988) : 551–56. http://dx.doi.org/10.1093/jaoac/71.3.551.
Texte intégralThèses sur le sujet "PHB solvent extraction"
MONGILI, BEATRICE. « Biotechnological approches for green-based bioplastic production ». Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2836776.
Texte intégralAzis, Muhammad Yudhistira. « Analyse des micropolluants organiques dans les sédiments et le biota (Perna viridis et Polymesoda erosa) de la baie de Jakarta et de la lagune de Segara Anakan, Indonésie ». Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4715.
Texte intégralEnvironmental problems can increase due to anthropogenic activities or natural phenomena. Indonesia is an archipelagic country that consists of many islands and coastal regions, where the growth of anthrophogenic and natural activities has exhibited severe environmental degradation in the past few decades. This study aims to explore (both qualitatively and quantitatively) the extent and sources of organic contaminants, i.e., n-alkanes in surface sediments; PAHs, PCBs and OCs in sediments and mussels, P. viridis from Jakarta Bay, North Jakarta, and P. erosa from the Segara Anakan Lagoon. Each protocol was continued with qualitative and quantitative analysis by GC-QQQ(triple-quadropole)/MS. Matrix interferences have been evaluated with proper samples with suitable yield of extraction and analysis. The n-alkanes, PAHs, PCBs and Organochlorin pesticides are detected in the highest levels in sediments, respectively 1935 µg/kg dw, 916 µg/kg dw, 116,49 µg/kg dw, and 16,70 µg/kg dw. In addition, the highest levels of PAHs (1739 µg/kg dw) and OCs levels (24,79 µg/kg dw) were found in biota. The source of hydrocarbons source, such the PAHs were generalelly petroleum source (transport utilization) although the pyrolytic are still present in sediments and biota. Environmental risk assessment from sediment quality guidelines (SQGs) were used to evaluate the probability risk in marine environments. Besides SQGs, sediments and mussels also in regard to the extent of the PAHs, PCBs and OCs (i.e. pp’-DDE) have been compared to other studies conducted at some polluted sites
O'Connell, Maureen. « Optimizing Solvent Extraction of PCBs from Soil ». Thesis, 2009. http://hdl.handle.net/10012/4529.
Texte intégralSilva, Carolina Belchior Calado da. « Recuperação de metais preciosos de placas de circuito impresso obsoletas através do processo de extracção por solventes ». Master's thesis, 2018. http://hdl.handle.net/10316/86460.
Texte intégralEste trabalho consistiu no desenvolvimento e otimização de uma metodologia hidrometalúrgica para a recuperação de metais presentes nas placas de circuito impresso (PCI) em fim de vida. Inicialmente, as PCI foram sujeitas a um tratamento físico/mecânico que possibilitou a sua fragmentação e consequente redução de tamanho utilizando equipamentos como guilhotinas para o corte e moinhos de lâminas para a redução a tamanhos inferiores a 2 mm.Procedeu-se em seguida à caracterização quantitativa dos metais, onde foram analisados individualmente quatro lotes, cada um com diferentes componentes associados às PCI, sendo que para cada um destes foi feita uma separação granulométrica em duas frações – oversize (> 0,707 mm) e undersize (< 0,707 mm). Verificou-se que o metal presente em maior quantidade é o cobre, sendo que este se encontra maioritariamente na fração oversize, com uma concentração máxima de 50 % (m/m). Os metais preciosos como o ouro e a prata encontram-se em quantidades promissoras na fração undersize, com cerca de 0,4 mgmetal/gresíduo e 0,2 mgmetal/gresíduo, respetivamente. Nesta caracterização química foram testados três métodos de digestão, o que se revelou mais eficiente para a digestão da maioria dos metais básicos (Cu, Fe, Zn, Ni, etc.) foi aquele que utilizou ácido fluorídrico como reagente principal. Quanto à digestão dos metais precisos, o método que se revelou mais adequado foi aquele que usou água-régia e peróxido de hidrogénio. Finalmente foram realizados ensaios de lixiviação para a extração do cobre e do ouro, utilizando dois estágios sequenciais. No primeiro estágio visando a recuperação seletiva do cobre, usaram-se como reagentes uma solução de amónia e peróxido de hidrogénio como agente oxidante, procurando conjugar elevados níveis de eficiência de extração assim como um baixo impacte ambiental. Foram otimizados dois parâmetros operatórios relevantes (razão líquido/sólido e a concentração de reagentes) com recurso a um planeamento fatorial a 3 níveis, tendo-se obtido um rendimento máximo de 100% para a extração do cobre, e uma seletividade de 77 % para uma razão L/S =5 e uma concentração máxima de reagente (72,4% (v/v)). No segundo estágio o objetivo foi a recuperação do ouro, recorrendo a um solvente orgânico (ácido acético) como reagente principal e ácido clorídrico, peróxido de hidrogénio e cloreto de sódio, com tempos de reação na ordem dos segundos/minutos. No entanto, os resultados relativos à extração do ouro foram inconclusivos.
This work consisted in the development and optimization of a hydrometallurgical methodology for the recovery of metals present in end-of-life printed circuit boards (PCB). Initially, the PCB were submitted to a physical / mechanical treatment that allowed their fragmentation and consequent size reduction using equipment such as cutting guillotines and blade mills for its reduction to particle sizes smaller than 2 mm.The quantitative characterization of the metals was then carried out, where four batches, each with different components associated to the PCB, were individually analyzed, and for each of them a particle size separation was performed in two fractions – oversize (>0,0707 mm) and undersize(<0,707 mm). It has been found that the most present metal is copper, which is mostly found in the oversize fraction, with a maximum concentration of 50% (m / m). Precious metals such as gold and silver are also present in promising quantities in the undersize fraction, with about 0.4 mg metal / gresidue and 0.2 mg metal / waste, respectively.. In this chemical characterization, three digestion methods were tested, hydrofluoric acid proved to be the most effective reagent for the digestion of the majority of basic metals (Cu, Fe, Zn, Ni, etc.).As for the digestion of the precious metals, the most suitable method was the one that uses aqua-regia and hydrogen peroxide.Finally, leaching tests were carried out to extract copper and gold using two sequential stages. In the first stage for the selective recovery of copper, a solution of ammonia and hydrogen peroxide was used as the oxidizing agent, aiming to conjugate high levels of extraction efficiency as well as a low environmental impact. Two relevant operative parameters (liquid / solid ratio and reagent concentration) were optimized using factorial planning at 3 levels, yielding an optimal yield of 100% and a selectivity of 77% for a ratio L/S= 5 and a maximum concentration of reagent (72.4% v/v). At the statistical level, the two parameters did not reveal a significant contribution. In the second stage the objective was to recover the gold, using an organic solvent (acetic acid) as the main reactant and hydrochloric acid, hydrogen peroxide and sodium chloride, reaction times in the order of seconds / minutes. However, the gold extraction results were inconclusive.
Livres sur le sujet "PHB solvent extraction"
Blakemore, Robert John. The determination of change in PCB concentration by GC/MS with Soxhlet extraction : And GC/ECD with automated solvent extraction from Portsmouth Harbour sediment. Portsmouth : University of Portsmouth, School of Pharmacy and Biomedical Sciences, 1999.
Trouver le texte intégralChapitres de livres sur le sujet "PHB solvent extraction"
Reilly, T. R., S. Sundaresan et J. H. Highland. « Cleanup of PCB Contaminated Soils and Sludges by a Solvent Extraction Process : A Case Study ». Dans Studies in Environmental Science, 125–39. Elsevier, 1986. http://dx.doi.org/10.1016/s0166-1116(08)70935-x.
Texte intégralRapports d'organisations sur le sujet "PHB solvent extraction"
Bloom, G. A., A. J. Lucero, L. J. Koran et E. N. Turner. PCB extraction from ORNL tank WC-14 using a unique solvent. Office of Scientific and Technical Information (OSTI), septembre 1995. http://dx.doi.org/10.2172/114030.
Texte intégralPeters, T., et S. Fink. RESULTS OF ANALYTICAL SAMPLE CROSSCHECKS FOR NEXT GENERATION SOLVENT EXTRACTION SAMPLES ISOPAR L CONCENTRATION AND PH. Office of Scientific and Technical Information (OSTI), septembre 2011. http://dx.doi.org/10.2172/1026682.
Texte intégralSchmidt, A. J., G. S. Klinger et P. R. Bredt. Evaluation of Ion Exchange Materials in K Basin Floor Sludge and Potential Solvents for PCB Extraction from Ion Exchange Materials. Office of Scientific and Technical Information (OSTI), avril 1999. http://dx.doi.org/10.2172/5089.
Texte intégralSchmidt, Andrew J., George S. Klinger et Paul R. Bredt. Evaulation of Ion Exchange Materials in K Basin Floor Sludge and Potential Solvents for PCB Extractions from Ion Exchange Materials. Office of Scientific and Technical Information (OSTI), avril 1999. http://dx.doi.org/10.2172/15010561.
Texte intégralPeter, J. M., M. G. Gadd, C. Jiang et J. Reyes. Organic geochemistry and petrology of sedimentary exhalative Pb-Zn and polymetallic hyper-enriched black shale deposits in the Selwyn Basin, Yukon. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328017.
Texte intégralNaim, Michael, Gary R. Takeoka, Haim D. Rabinowitch et Ron G. Buttery. Identification of Impact Aroma Compounds in Tomato : Implications to New Hybrids with Improved Acceptance through Sensory, Chemical, Breeding and Agrotechnical Techniques. United States Department of Agriculture, octobre 2002. http://dx.doi.org/10.32747/2002.7585204.bard.
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