Relevant bibliographies by topics / Bacteria. Flocculation

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Bacteria. Flocculation'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Bacteria. Flocculation"

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Ugbenyen, Anthony M., John J. Simonis, and Albertus K. Basson. "Screening for Bioflocculant-Producing Bacteria from the Marine Environment of Sodwana Bay, South Africa." Annals of Science and Technology 3, no. 1 (2018): 16–20. http://dx.doi.org/10.2478/ast-2018-0010.

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AbstractFlocculants are chemicals that mediate flocculation process, by aggregating colloids from suspension to form floc. Chemical flocculants are hazardous to the environment, which inform the search for safer and eco-friendly alternatives from microorganisms. Bacterial strains were isolated from water and sediment samples collected from Sodwana Bay, South Africa, and physiological properties of the bacterial strains were observed. Flocculation test using kaolin clay suspension was done on all isolates and the ones that showed flocculating activity were identified molecularly using 16 rRNA g
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Wang, Xin Xin, Liang Wu, Ping Zhou, et al. "Harvesting of Polycyclic Aromatic Hydrocarbons (PAHs)-Degrading Bacteria by Magnetic Flocculation." Applied Mechanics and Materials 665 (October 2014): 563–66. http://dx.doi.org/10.4028/www.scientific.net/amm.665.563.

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Magnetic flocculation was reported to be efficient to harvest microalgae. However, little is known about the recovery of PAHs-degrading bacteria from the culture by magnetic flocculation.Advenella kashmirensisstrain w13003, a PAHs-degrading bacterium, was harvested by magnetic flocculation using magnetite and polyferric sulphate (PFS) as flocculants. The results showed the treatment with magnetite and PFS showed high concentration factor with flocculation efficiency near 100%, which suggest magnetic flocculation could result in a high concentration factor without significantly loss of PAHs-deg
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Prombutara, P., and M. S. Allen. "Flocculation-Related Gene Identification by Whole-Genome Sequencing of Thauera aminoaromatica MZ1T Floc-Defective Mutants." Applied and Environmental Microbiology 82, no. 6 (2015): 1646–52. http://dx.doi.org/10.1128/aem.02917-15.

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ABSTRACTThauera aminoaromaticaMZ1T, a floc-forming bacterium isolated from an industrial activated-sludge wastewater treatment plant, overproduces exopolysaccharide (EPS), leading to viscous bulking. This phenomenon results in poor sludge settling and dewatering during the clarification process. To identify genes responsible for bacterial flocculation, a whole-genome phenotypic-sequencing technique was applied. Genomic DNA of MZ1T flocculation-deficient mutants was subjected to massively parallel sequencing. The resultant high-quality reads were assembled and compared to the reference genome o
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Okano, Chigusa, Koki Chiba, Eri Nasuno, Ken-ichi Iimura, and Norihiro Kato. "Complex Flocculation of Biofilm-forming Bacteria in the Presence of Flocculating Bacteria Isolated from Activated Sludge." Transactions of the Materials Research Society of Japan 42, no. 3 (2017): 77–80. http://dx.doi.org/10.14723/tmrsj.42.77.

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Yang, Ming Yan, Feng Han, Jia Tian, Chao Sun, Xia Cui, and Mei Rong Han. "Screening of a Microbial Flocculant Producing Silicate Bacteria MT5-2 and its Flocculating Activity." Advanced Materials Research 599 (November 2012): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amr.599.3.

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A microbial flocculant (MBF) producing silicate bacteria MT5-2 was isolated from different sources of samples by silicate selected medium. Its chemical composition, optimal flocculation conditions，flocculation characteristics and primary application were studied in this paper. The results showed that the flocculant was an extracellular polysaccharide, and its flocculation activity was mainly distributed in the fermentation broth. The optimal flocculation conditions were as follows: for the 100 mL kaolin suspension, flocculant dosage was 4mL, metal cation dosage was 1% of ZnCl2 3mL, pH 7.5. The
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Ogunlaja, A., B. J. Ibidunni, K. Oyende, and O. O. Ogunlaja. "Optimization of bioflocculant production by bacteria isolated from oil-polluted soil and fermented maize effluent." Ife Journal of Science 22, no. 2 (2020): 201–10. http://dx.doi.org/10.4314/ijs.v22i2.18.

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This study involved isolation of bioflocculant producing bacteria from soil and waste water. The isolates were tested for flocculation activities and those deemed fit were identified and the optimal environmental conditions for bioflocculant production were also determined. Samples were collected from oil-contaminated soil in Redeemer's University and fermented maize waste water. Microbial isolation was done using standardmicrobiological methods and identification was done using morphology, biochemical and molecular method with universal primer for 16SrRNA gene. Environmental conditions (pH, T
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Bello, Antonio Roberto Crystal, Dejanira de Franceschi Angelis, and Roberto Naves Domingos. "Ultrasound efficiency in relation to sodium hypochlorite and filtration adsorption in microbial elimination in a water treatment plant." Brazilian Archives of Biology and Technology 48, no. 5 (2005): 739–45. http://dx.doi.org/10.1590/s1516-89132005000600009.

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Processes like ultrasound, chlorination and filtration-adsorption were compared to eliminate microorganisms and to adjust established parameters of public drinking water. A mini water treatment plant (WTP-CB), in pilot scale, was projected and built to evaluate each process influence as: decontamination, coagulation-flocculation, sedimentation and filtration. Total and fecal coliforms, Escherichia coli and heterotrophic bacteria and physic/chemical parameters were quantified from water. Ultrasound, chlorination and filtration-adsorption were efficient to inactivate and/or eliminate bacteria. U
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Sicchierolli, S. M., E. M. Mamizuka, and A. M. Carmona-Ribeiro. "Bacteria Flocculation and Death by Cationic Vesicles." Langmuir 11, no. 8 (1995): 2991–95. http://dx.doi.org/10.1021/la00008a024.

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Peng, X., J. Sun, D. Iserentant, C. Michiels, and H. Verachtert. "Flocculation and coflocculation of bacteria by yeasts." Applied Microbiology and Biotechnology 55, no. 6 (2001): 777–81. http://dx.doi.org/10.1007/s002530000564.

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Haegeman, Bart, Claude Lobry, and Jérôme Harmand. "Modeling bacteria flocculation as density-dependent growth." AIChE Journal 53, no. 2 (2007): 535–39. http://dx.doi.org/10.1002/aic.11077.

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Dissertations / Theses on the topic "Bacteria. Flocculation"

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Strand, Sabina P. "Interactions between Chitosans and Bacteria : Flocculation and Adhesion." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Natural Sciences and Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-108.

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Vilinska, Annamaria. "Bacteria-sulfide mineral interactions with reference to flotation and flocculation." Licentiate thesis, Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1757/2007/68/.

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Oladele, Agunbiade M. "Studies on bioflocculants produced by three freshwater Actinomycetes (Streptomyces Sp.Gansen, Cellulomonas Sp,Bola and Brachybacterium Sp, UFH) isolated from Tyume river." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/6550.

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Several bacteria were isolated from the bottom sediments of Tyume River and investigated for bioflocculant production potentials. Kaolin clay suspension (4 g/l) was used to measure the flocculating activity and three of the positive isolates were identified by 16S rRNA gene nucleotide sequence analyses and the sequences deposited in GenBank as Streptomyces sp Gansen (accession number HQ537129), Brachybacterium sp UFH (accession number HQ537131.), and Cellulomonas sp Bola (accession number HQ537132). Streptomyces sp Gansen exhibited its maximum flocculating activity using lactose (85% activity)
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Robinson, Philip Mark. "A quantitative investigation into the factors affecting the flocculation of bacteria (Escherichia coli) with cationic polyacrylamide." Thesis, Teesside University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410864.

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Buttice, Audrey Lynn. "Aggregation of Sediment and Bacteria with Mucilage from the Opuntia ficus-indica Cactus." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4295.

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Flocculants are commonly used in industrial settings where solid-liquid separations are desired including industrial and municipal wastewater management and potable water production facilities. Conventional flocculants include inorganic metal salts and synthetic organic polymers. The cost, availability, and harmful effects of the non-biodegradable nature of these flocculants have led to the widespread study of natural flocculants. Current natural flocculants being studied include polysaccharides cultivated from microbial extracellular matrix products and plant based materials. In this study, t
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Krapf, Marie-Ève. "Agrégation de cellules bactériennes par des polymères cationiques (polyéthylèneimine) : influence de la masse moléculaire du polymère et de la présence/absence de surstructures exopolymériques bactériennes sur la déshydratation des boues biologiques." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0089/document.

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Après déshydration, les boues biologiques présentent en moyenne une siccité de 30%, ce qui pose d'importants problèmes environnementaux. Afin de comprendre les mécanismes physico-chimiques de rétention d'eau dans ces boues, nous les avons modélisées par une souche bactérienne pure présentant la particularité de produire ou non des surstructures, suivant sa température de culture. Les suspensions bactériennes ainsi obtenues ont été floculées par du polyéthylèneimine de différentes masses moléculaires. Des mesures de densité optique, mobilité électrophorétique, conductivité, pH, absorbance, gran
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Kajornatiyudh, Sittiporn. "Bacterial extracellular polymers and flocculation of activated sludges." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/52313.

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The extracellular polymers produced by bacteria play an important role in bacterial aggregation or bacterial flocculation in secondary waste treatment. The mechanisms responsible for this floc formation are thought to be polymer induced adsorption and interparticle bridging among bacterial cells or between bacterial cells and inorganic colloids. The efficiency of the processes following flocculation in the treatment line such as sedimentation, sludge thickening, and sludge dewatering depends on the extent of this bacterial flocculation. In this research, sludge samples from under various sub
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Koivuranta, E. (Elisa). "Optical monitoring of flocs and filaments in the activated sludge process." Doctoral thesis, Oulun yliopisto, 2016. http://urn.fi/urn:isbn:9789526211794.

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Abstract Flocculation plays a critical role in the activated sludge process, where flocs are removed by settling and where unsatisfactory flocculation is resulting in poor effluent quality. Control and operation of the process is also challenging as it is sensitive to external and internal disturbances. Furthermore, stricter environmental demands are also being placed on wastewater treatment and discharge quality thus solutions are needed to improve the current systems. A novel optical monitoring method employing a tube flow and a CCD camera was developed to characterize the flocs and filament
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Okaiyeto, Kunle. "Evaluation of flocculating potentials and charecterization of bioflocculants produced by three bacterial isolates from Algoa Bay, South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2633.

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Flocculation has been widely adopted as one of the most effective methods to remove colloidal particles in water or wastewater treatment. Synthetic flocculants are conventionally used because of their high flocculating efficiency and cost-effectiveness. However, they have been reported to have hazardous properties and implicated in some serious health problems including senile dementia and neuro-toxicity, as well as being recalcitrant in the environment. Consequently, efforts are being geared away from the use of synthetic flocculants in water and wastewater treatment. Hence, the need for safe
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Boltz, Joshua. "The Kinetics of Particulate Substrate Utilization by Bacterial Films." ScholarWorks@UNO, 2005. http://scholarworks.uno.edu/td/254.

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There is a need to develop a mathematical expression capable of describing the removal of particulate chemical oxygen demand (PCOD) from wastewaters in biological film systems. In this context, organic particles that are maintained in suspension (i.e., not removed during normal settling) are the focus of experimentation, modeling, and discussion. The goal of this research project is to study the kinetics of PCOD removal from wastewaters by bacterial films, or biofilms. To achieve this objective, a bench-scale rotating disc biofilm reactor (RDBR) was operated using methanol (dissolved
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Book chapters on the topic "Bacteria. Flocculation"

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Kasan, Nor Azman, Shaziela Mohamad Said, Nurarina Ayuni Ghazali, Nurul Fakriah Che Hashim, Zaharah Ibrahim, and Nakisah Mat Amin. "Application of Biofloc in Aquaculture: An Evaluation of Flocculating Activity of Selected Bacteria from Biofloc." In Beneficial Microorganisms in Agriculture, Aquaculture and Other Areas. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23183-9_8.

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Rastogi, Rupali. "Water Purification Using Different Chemical Treatment." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6111-8.ch019.

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Water from surface sources is often contaminated by microbes, whereas groundwater is normally safer, but even groundwater can be contaminated by harmful chemicals from human activities or from the natural environment. The purification process of water may reduce the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, fungi, and a range of dissolved and particulate material derived from the surfaces. Water purification is the process of removing undesirable chemicals, materials, and biological contaminants from contaminated water. Most water is purified for human consumption (drinking water), but water purification may also be designed for a variety of other purposes, such as medical, pharmacology, chemical, and industrial applications. In general, the methods used include physical processes such as filtration and sedimentation, biological processes such as slow sand filters or activated sludge, chemical processes such as flocculation and chlorination, and the use of electromagnetic radiation such as ultraviolet light.
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Harrison, Roger G., Paul W. Todd, Scott R. Rudge, and Demetri P. Petrides. "Sedimentation." In Bioseparations Science and Engineering. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780195391817.003.0008.

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Sedimentation is the movement of particles or macromolecules in an inertial field. Its applications in separation technology are extremely widespread. Extremes of applications range from the settling due to gravity of tons of solid waste and bacteria in wastewater treatment plants to the centrifugation of a few microliters of blood to determine packed blood cell volume (“hematocrit”) in the clinical laboratory. Accelerations range from 1 × g in flocculation tanks to 100,000 × g in ultracentrifuges for measuring the sedimentation rates of macromolecules. In bioprocessing, the most frequent applications of sedimentation include the clarification of broths and lysates, the collection of cells and inclusion bodies, and the separation of fluids having different densities. Unit operations in sedimentation include settling tanks and tubular centrifuges for batch processing, continuous centrifuges such as disk centrifuges, and less frequently used unit operations such as field-flow fractionators and inclined settlers. Bench scale centrifuges that accommodate small samples can be found in most research laboratories and are frequently applied to the processing of bench scale cell cultures and enzyme preparations. Certain high-speed ultracentrifuges are used as analytical tools for the estimation of molecular weights and diffusion coefficients. The chapter begins with a description of the basic principles of sedimentation, followed by methods of characterizing laboratory and larger-scale centrifuges. Two important production centrifuges, the tubular bowl centrifuge and the disk-stack centrifuge, are analyzed in detail to give the basis for scale-up. Ultracentrifuges, important for analytical and preparative work, are then analyzed. The effect of flocculation of particles on sedimentation is presented, and sedimentation of particles at low accelerations is discussed. The chapter concludes with a description of centrifugal elutriation.
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Tuinier, R., and C. G. de Kruif. "DEPLETION FLOCCULATION OF CASEIN MICELLES INDUCED BY THE EPS OF A LACTIC ACID BACTERIUM." In Gums and Stabilisers for the Food Industry 9. Elsevier, 1998. http://dx.doi.org/10.1533/9781845698362.3.222.

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Conference papers on the topic "Bacteria. Flocculation"

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Kyoichi, Okamoto, Toyama Takeshi, and Komoriya Tomoe. "Development on Most Suitable Removal Method of Radioactive Cesium Adsorbed on Ocean Sludge by Using Fine Bubble and Activating Microorganisms." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62581.

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Fukushima nuclear accident of March 11, 2011, soil and water had been contaminated by radioactive cesium. Moreover, radioactive cesium was found in the ocean sludge in Tokyo Bay flowing from rivers. Cesium which is adsorbed to the sludge cannot be easily removed. One of the authors developed decomposition and purification system, a circulation-type system by fine bubbles, that is, by creating aerobic state, aerobic bacteria are activated resulting to decomposition and purification of ocean sludge. Based on the hypothesis that radioactive cesium is adsorbed on the surface of the sludge depositi
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