Articles de revues : « Bio-cleaning »

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Liu, Kesong, et Lei Jiang. « Bio-Inspired Self-Cleaning Surfaces ». Annual Review of Materials Research 42, n^o 1 (4 août 2012) : 231–63. http://dx.doi.org/10.1146/annurev-matsci-070511-155046.

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Schulze, Agnes, Daniel Breite, Yongkyum Kim, Martin Schmidt, Isabell Thomas, Marco Went, Kristina Fischer et Andrea Prager. « Bio-Inspired Polymer Membrane Surface Cleaning ». Polymers 9, n^o 12 (9 mars 2017) : 97. http://dx.doi.org/10.3390/polym9030097.

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Wasser, Lionel, Sara Dalle Vacche, Feyza Karasu, Luca Müller, Micaela Castellino, Alessandra Vitale, Roberta Bongiovanni et Yves Leterrier. « Bio-Inspired Fluorine-Free Self-Cleaning Polymer Coatings ». Coatings 8, n^o 12 (28 novembre 2018) : 436. http://dx.doi.org/10.3390/coatings8120436.

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Bio-inspired fluorine-free and self-cleaning polymer coatings were developed using a combination of self-assembly and UV-printing processes. Nasturtium and lotus leaves were selected as natural template surfaces. A UV-curable acrylate oligomer and three acrylated siloxane comonomers with different molecular weights were used. The spontaneous migration of the comonomers towards the polymer–air interface was found to be faster for comonomers with higher molecular weight, and enabled to create hydrophobic surfaces with a water contact angle (WCA) of 105°. The replication fidelity was limited for the nasturtium surface, due to a lack of replication of the sub-micron features. It was accurate for the lotus leaf surface whose hierarchical texture, comprising micropapillae and sub-micron crystalloids, was well reproduced in the acrylate/comonomer material. The WCA of synthetic replica of lotus increased from 144° to 152° with increasing creep time under pressure to 5 min prior to polymerization. In spite of a water sliding angle above 10°, the synthetic lotus surface was self-cleaning with water droplets when contaminated with hydrophobic pepper particles, provided that the droplets had some kinetic energy.

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Beyer, Florian, Judita Laurinonyte, Arie Zwijnenburg, Alfons J. M. Stams et Caroline M. Plugge. « Membrane Fouling and Chemical Cleaning in Three Full-Scale Reverse Osmosis Plants Producing Demineralized Water ». Journal of Engineering 2017 (2017) : 1–14. http://dx.doi.org/10.1155/2017/6356751.

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Membrane fouling and cleaning were studied in three reverse osmosis (RO) plants. Feed water was secondary wastewater effluent, river water, and surface water. Membrane autopsies were used for fouling characterization. Fouling layer measurements included total organic carbon (TOC), adenosine triphosphate, polysaccharides, proteins, and heterotrophic plate counts. In all locations, membrane and spacer fouling was (bio)organic. Plant chemical cleaning efficiencies were evaluated from full-scale operational data and cleaning trials in a laboratory setup. Standard cleaning procedures were compared to two cleaning procedures specifically adapted to treat (bio)organic fouling using commercial blend cleaners (mixtures of active substances). The three RO plants were impacted by irreversible foulants causing permanently decreased performance in normalized pressure drop and water permeability even after thorough chemical cleaning. The standard plant and adapted cleaning procedures reduced the TOC by 45% on average, with a maximum of ~80%. In general, around 20% higher biomass removal could be achieved with adapted procedure I compared to adapted procedure II. TOC measurements and SEM showed that none of cleaning procedures applied could remove foulants completely from the membrane elements. This study underlines the need for novel cleaning approaches targeting resistant foulants, as none of the procedures applied resulted in highly effective membrane regeneration.

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Nasri, Noor Shawal, Murtala Musa Ahmed, Amalina Nurhidayah Shamsu Kamar, Tee Yee Sing, Usman Dadum Hamza, Jibril Mohammed et Husna Mohd Zain. « Hydrophobic-Synthesis of Bio-Based Epoxy Substrate Using Methyl Ester and its Dust Deposition and Decontamination Effects ». Advanced Materials Research 1043 (octobre 2014) : 76–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1043.76.

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This research investigated the prospect of using bio-based substrates for dust decontamination purposes. Initially, bio-based novolac resin was prepared by condensation from the reaction between phenol, bio-oil phenolic fractions and formaldehyde in an acidic medium. The prepared novolac was later transformed to epoxide with epichlorohydrine and 30 percent sodium hydroxide solution. The epoxy formulation was later enhanced with varying amount of methyl ester (10 wt%, 20wt% and 30wt% ). The samples were characterised using various techniques such as FTIR, GC-MS, contact angle etc. Dust depositions and decontaminations tests were also conducted. The results indicated that the synthesized hydrophobic bio-based sample possed some dust cleaning characteristics which when fully enhanced would lead to the emergence of bio-based dust cleaning formulation will contribute immensely in mitigating the negative effect and toxicity of petroleum based products.

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Sun, Di, et Karl Böhringer. « Self-Cleaning : From Bio-Inspired Surface Modification to MEMS/Microfluidics System Integration ». Micromachines 10, n^o 2 (30 janvier 2019) : 101. http://dx.doi.org/10.3390/mi10020101.

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This review focuses on self-cleaning surfaces, from passive bio-inspired surface modification including superhydrophobic, superomniphobic, and superhydrophilic surfaces, to active micro-electro-mechanical systems (MEMS) and digital microfluidic systems. We describe models and designs for nature-inspired self-cleaning schemes as well as novel engineering approaches, and we discuss examples of how MEMS/microfluidic systems integrate with functional surfaces to dislodge dust or undesired liquid residues. Meanwhile, we also examine “waterless” surface cleaning systems including electrodynamic screens and gecko seta-inspired tapes. The paper summarizes the state of the art in self-cleaning surfaces, introduces available cleaning mechanisms, describes established fabrication processes and provides practical application examples.

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Mikheyev, O. M., O. V. Lapan et S. M. Madzhd. « БІОЛОГІЧНЕ ОЧИЩЕННЯ ВОДНИХ ОБ’ЄКТІВ ВІД 137Cs ». Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series : Biology 75, n^o 1 (23 juin 2019) : 68–73. http://dx.doi.org/10.25128/2078-2357.19.1.8.

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A mobile bio plateau design has been developed for water’s bodies purification from radionuclides. To construct bio plateau chemically inert floating material was used as the substrate granular foam on top of which the seeds of higher terrestrial plants were placed. Constructed bio plateau on the 9th day of incubation were placed into tanks with a solution of 137Cs to study the cleaning efficiency of terrestrial plants to the aquatic environment. Once a day, the solution of 137Cs was poured into Marinelli's vessel to determine the specific activity of the radionuclide using a gamma spectrometer. A comparative study of the cleaning efficiency of terrestrial plants of the aquatic environment on the example of 137Cs ions has been carried out. The results of mathematical modeling of the dynamics of accumulation of radioactive cesium in the “experimental reservoir – bio plateau” system was presented.

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Greenberg, Charles B., et Cory Steffek. « Bio-adhesion to thin films in relation to cleaning ». Thin Solid Films 484, n^o 1-2 (juillet 2005) : 324–27. http://dx.doi.org/10.1016/j.tsf.2005.03.008.

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Wang, Zheng, Shu Yao, Kun Song, Xinjian Gong, Sujuan Zhang, Sheng Gao et Zaijun Lu. « A bio-based benzoxazine surfactant from amino acids ». Green Chemistry 22, n^o 11 (2020) : 3481–88. http://dx.doi.org/10.1039/d0gc00218f.

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Lee, Kyung Mi, Byong Hyoek Lee et Chan Jung Park. « A Study on the Control of Bio-Aerosol for Prevention of Indoor Aerial Infection Using Antimicrobial Air Filter ». Applied Mechanics and Materials 284-287 (janvier 2013) : 1601–5. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1601.

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Some indoor bio-aerosols trigger allergic reactions, including hypersensitivity pneumonitis, allergic rhinitis, and various types of asthma. Moreover, human influenza virus is one of the bio-aerosols that causes significant morbidity and mortality every year worldwide. Although vaccination is the most effective way to address the risk of airborne infection, they are not always feasible, available and practiced. An air cleaning device is effective and efficient in removing indoor bio-aerosols and thereby controlling or eliminating these airborne biological contaminants. An antimicrobial filter is developed and its antimicrobial activities against influenza viruses are measured. An extract from Gingko Biloba L. and Sumac (Rhus Javanica L.) possesses antifungal, antibacterial, and antiviral activities thus this class of natural products is used as an antimicrobial agent in this study. An antimicrobial air filters were prepared by coating the natural agent on polypropylene filter media. The antimicrobial rates of the filter against new influenza (H1N1) virus and A/PuertoRico/8/34 (A/PR/8) virus were greater than 99.9999%. The antimicrobial filters were effective in controlling the bio-aerosols by inhibiting bacterial and viral survival on the filter, thereby preventing secondary contamination of filter from breeding of bio-aerosols. An air cleaning device equipped with the antimicrobial air filter was tested for the inhibition effect on viruses and no virus was detected at the outlet of the purifier. Although the antimicrobial filters are developed and tested only for the inactivation of virus in this study, the filter could be also effective in removing other types of bio-aerosols, such as bacteria, fungi, and allergens. The antimicrobial filter appears to be promising application in air cleaning and biological protection fields.

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Ghosh, Tanushree, Jiawei Chen, Aloke Kumar, Tian Tang et Cagri Ayranci. « Bio-cleaning improves the mechanical properties of lignin-based carbon fibers ». RSC Advances 10, n^o 39 (2020) : 22983–95. http://dx.doi.org/10.1039/d0ra03412f.

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Jagdheesh, R., M. Diaz et J. L. Ocaña. « Bio inspired self-cleaning ultrahydrophobic aluminium surface by laser processing ». RSC Advances 6, n^o 77 (2016) : 72933–41. http://dx.doi.org/10.1039/c6ra12236a.

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Ding, Yufan, Ana Teresa Caldeira, Catia Salvador, Sabrina Grassini, Emma Angelini et Nick Schiavon. « The inhibition of biodegradation on building limestone by plasma etching ». ACTA IMEKO 10, n^o 3 (30 septembre 2021) : 209. http://dx.doi.org/10.21014/acta_imeko.v10i3.1162.

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Plasma etching is an innovative technique that has been recently applied in the cleaning of soiled archaeological objects. This research investigated the use of low-pressure plasma etching in cleaning microbial contaminations on an oolitic limestone from an UNESCO World Heritage listed monument: the Batalha Monastery in Central Portugal. The cleaning effect was assessed by FTIR, SEM, optical microscope, and cell viability index measurement. Experimental work suggests that plasma discharge can cause rupture in the microbial cell structures and is helpful in removing microorganisms from the surface of the stone. At the macroscopic level, detachment of microbial crust was also observed in plasma etched bio-deteriorated limestone surfaces. Furthermore, plasma etching can inhibit the microbial growth by decomposing and eliminating the sugar-containing compounds on the limestones, thus eliminating a major nutrient supply for microbial metabolism and reproduction. Plasma etching can therefore be regarded as a fast and eco-friendly conservation tool for stone heritage architecture to prevent/reduce the onset of bio-colonization and biodegradation.

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Vukomanović, Marija, Vojka Žunič, Mojca Otoničar, Urška Repnik, Boris Turk, Srečo Davor Škapin et Danilo Suvorov. « Hydroxyapatite/platinum bio-photocatalyst : a biomaterial approach to self-cleaning ». Journal of Materials Chemistry 22, n^o 21 (2012) : 10571. http://dx.doi.org/10.1039/c2jm00136e.

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Cardellicchio, Francesco, Sabino Aurelio Bufo, Stefania Mirela Mang, Ippolito Camele, Anna Maria Salvi et Laura Scrano. « The Bio-Patina on a Hypogeum Wall of the Matera-Sassi Rupestrian Church “San Pietro Barisano” before and after Treatment with Glycoalkaloids ». Molecules 28, n^o 1 (31 décembre 2022) : 330. http://dx.doi.org/10.3390/molecules28010330.

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The investigation focused on the deterioration of the walls in the hypogeum of “San Pietro Barisano” rupestrian church, located in the Matera-Sassi (Southern Italy), one of the UNESCO World Heritage sites. The study evaluated the biocide activity of a mixture of natural glycoalkaloids (GAs) extracted from the unripe fruit of Solanum nigrum and applied to clean a hypogeum wall surface in the church affected by bio-patinas. The analyzed bio-patina, collected before treatment and, at pre-established times, after treatment, showed changes in chemical composition detected by XPS, accompanied by visible discoloration and biological activity variation. The biocidal action of the glycoalkaloids mixture, directly employed on the wall surface, was effective after about four weeks for most bio-patina colonizers but not for the fungal species that can migrate and survive in the porosities of the calcarenite. Consequently, the cleaning procedure requires the integration of fungicidal actions, combined with the consolidation of the surfaces, to obtain complete bioremediation and avoid subsequent biological recolonization. SEM images and associated microanalysis of pretreated bio-patina have revealed the biocalcogenity of some autochthonous microorganisms, thus preluding to their eventual isolation and reintroduction on the wall surface to act as consolidants once the bio-cleaning phase has been completed.

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Visser, Claas Willem, Philipp Erhard Frommhold, Sander Wildeman, Robert Mettin, Detlef Lohse et Chao Sun. « Dynamics of high-speed micro-drop impact : numerical simulations and experiments at frame-to-frame times below 100 ns ». Soft Matter 11, n^o 9 (2015) : 1708–22. http://dx.doi.org/10.1039/c4sm02474e.

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Technologies including (3D-) (bio-)printing, diesel engines, laser-induced forward transfer, and spray cleaning require optimization and therefore understanding of micrometer-sized droplets impacting at velocities beyond 10 m s⁻¹.

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Bose, Abhishek, et Korok Bhattacharjee. « BIO-ALGAL GAS CLEANING PLANT FOR TREATMENT OF BLAST FURNACE WASTEWATER ». MATTER : International Journal of Science and Technology 1, n^o 2 (25 mai 2017) : 15–29. http://dx.doi.org/10.20319/mijst.2015.12.1529.

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Xue, Lili, Xili Lu, Huan Wei, Ping Long, Jina Xu et Yufeng Zheng. « Bio-inspired self-cleaning PAAS hydrogel released coating for marine antifouling ». Journal of Colloid and Interface Science 421 (mai 2014) : 178–83. http://dx.doi.org/10.1016/j.jcis.2013.12.063.

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Kjellberg, S., A. Jayaratne, E. Cadan, N. Sukumaran, J. Vreeburg et J. Verberk. « The resuspension potential method : Yarra Valley water's novel approach to routine mains cleaning ». Water Supply 9, n^o 5 (1 décembre 2009) : 549–56. http://dx.doi.org/10.2166/ws.2009.456.

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Routine cleaning of water mains is frequently employed by water utilities around the world as a means of managing common water quality issues. When employed correctly, water mains cleaning can be effective in removing loosely deposited sediments and bio-films that cause water discolouration, coliform regrowth and unpalatable tastes and odours. Despite its long history in the water industry, water supply practitioners continue to use highly subjective mechanisms to identify when, where and how much to spend on their mains cleaning programs. This paper discusses the benefits of using the Resuspension Potential Method, an objective means of planning and implementing mains cleaning, to achieve an optimum outcome for both the water company and its customers. Since 2005, Yarra Valley Water has undertaken Resuspension Potential Method measurements in 13 of its water quality zones to gain a better understanding of sediment accumulation rate in the zones over time. Ultimately the information will be used for more effective planning and proactive implementation of the mains cleaning programme.

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Samaei, Mohammad Reza, Seyed Bagher Mortazavi, Bita Bakhshi, Ahmad Jonidi Jafari, Narges Shamsedini, Hamid Mehrazmay et Mohammad Ansarizadeh. « Investigating the effects of combined bio-enhancement and bio-stimulation on the cleaning of hexadecane-contaminated soils ». Journal of Environmental Chemical Engineering 10, n^o 1 (février 2022) : 106914. http://dx.doi.org/10.1016/j.jece.2021.106914.

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Francavilla, Matteo, Luciano Beneduce, Giuseppe Gatta, Enzo Montoneri, Massimo Monteleone et Davide Mainero. « Waste cleaning waste : Ammonia abatement in bio-waste anaerobic digestion by soluble substances isolated from bio-waste compost ». Biochemical Engineering Journal 116 (décembre 2016) : 75–84. http://dx.doi.org/10.1016/j.bej.2016.02.015.

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V, Soni. « The Potential of Biosurfactants in the Pharmaceutical Industry : A Review ». Bioequivalence & ; Bioavailability International Journal 6, n^o 2 (15 juillet 2022) : 1–15. http://dx.doi.org/10.23880/beba-16000176.

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Surface-active substances known as "bio-based surfactants" come from a variety of sources, including plants, animals, microorganisms, marine life, synthetics, and semi-synthetics. Bio-based surfactants have a variety of uses, including in food, personal care, pharmaceutical, and industrial formulations as well as in agricultural and oil field chemicals and institutional and industrial cleaning. Nowadays, there is a significant demand for bio-based surfactants on the market as a result of the strict environmental rules that governments across the globe have placed on the use of toxins in detergents and growing environmental concerns among consumers. Due to their low toxicity and biodegradability, bio-based surfactants are acknowledged as a more environmentally friendly alternative to traditional petrochemical-based surfactants. Additional research going on for the creation of innovative biodegradable surfactants as a result, either by biological processes or from renewable resources (bio-catalysis or fermentation are included). Many such varieties, their properties, clinical assessment of surfactant formulations, use of bio-based surfactants, industrial state-of-the-art, and prospective markets for bio-based surfactants manufacturing are discussed in this paper.

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Pokorna, Dana, Jose M. Carceller, Ladislav Paclik et Jana Zabranska. « Biogas Cleaning by Hydrogen Sulfide Scrubbing and Bio-oxidation of Captured Sulfides ». Energy & ; Fuels 29, n^o 7 (10 avril 2015) : 4058–65. http://dx.doi.org/10.1021/ef502804j.

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Nyström, Daniel, Josefina Lindqvist, Emma Östmark, Per Antoni, Anna Carlmark, Anders Hult et Eva Malmström. « Superhydrophobic and Self-Cleaning Bio-Fiber Surfaces via ATRP and Subsequent Postfunctionalization ». ACS Applied Materials & ; Interfaces 1, n^o 4 (24 mars 2009) : 816–23. http://dx.doi.org/10.1021/am800235e.

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Catel-Ferreira, Manuella, Hédia Tnani, Claire Hellio, Pascal Cosette et Laurent Lebrun. « Antiviral effects of polyphenols : Development of bio-based cleaning wipes and filters ». Journal of Virological Methods 212 (février 2015) : 1–7. http://dx.doi.org/10.1016/j.jviromet.2014.10.008.

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Valentini, Federica, Alessia Diamanti et Giuseppe Palleschi. « New bio-cleaning strategies on porous building materials affected by biodeterioration event ». Applied Surface Science 256, n^o 22 (septembre 2010) : 6550–63. http://dx.doi.org/10.1016/j.apsusc.2010.04.046.

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Tiago, Gonçalo, Maria Beatriz Cristóvão, Ana Paula Marques, Rosa Huertas, Ivan Merino-Garcia, Vanessa Jorge Pereira, João Goulão Crespo et Svetlozar Velizarov. « A Study on Biofouling and Cleaning of Anion Exchange Membranes for Reverse Electrodialysis ». Membranes 12, n^o 7 (8 juillet 2022) : 697. http://dx.doi.org/10.3390/membranes12070697.

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This study covers the modification, (bio)fouling characterization, use, and cleaning of commercial heterogeneous anion exchange membranes (AEMs) to evaluate their feasibility for reverse electrodialysis (RED) applications. A surface modification with poly (acrylic) acid resulted in an improved monovalent perm-selectivity (decreased sulfate membrane transport rate). Moreover, we evaluated the (bio)fouling potential of the membrane using sodium dodecyl sulfate (SDS), sodium dodecyl benzenesulfonate (SDBS), and Aeromonas hydrophila as model organic foulants and a biofoulant, respectively. A detailed characterization of the AEMs (water contact angle, ion exchange capacity (IEC), scanning electron microscopy (SEM), cyclic voltammetry (CV), and Fourier Transform Infrared (FTIR) spectra) was carried out, verifying that the presence of such foulants reduces IEC and the maximum current obtained by CV. However, only SDS and SDBS affected the contact angle values. Cleaning of the biofouled membranes using a sodium hypochlorite aqueous solution allows for (partially) recovering their initial properties. Furthermore, this work includes a fouling characterization using real surface and sea water matrixes, confirming the presence of several types of fouling microorganisms in natural streams. A lower adhesion of microorganisms (measured in terms of total bacteria counts) was observed for the modified membranes compared to the unmodified ones. Finally, we propose a cleaning strategy to mitigate biofouling in AEMs that could be easily applied in RED systems for an enhanced long-term process performance.

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Alisi, Chiara, Donata Magrini, Silvia Vettori, Barbara Salvadori, Marina Vincenti, Daniela Manna, Monica Bietti et Anna Rosa Sprocati. « Sustainable Restoration Guided by Scientific and Archival Investigations : The Bio-Cleaning of Lorenzo Duke of Urbino’s Sarcophagus, a Michelangelo’s Masterpiece in the Medici Chapels ». Heritage 5, n^o 4 (8 novembre 2022) : 3359–73. http://dx.doi.org/10.3390/heritage5040172.

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The masterpiece this work deals with is the tomb of Lorenzo de’ Medici, Duke of Urbino, completed by Michelangelo around 1533 in the New Sacristy of Medici chapel in Florence. Sacristy underwent an extensive restoration (2013–2020) and Lorenzo’s sarcophagus was addressed in the last phase (2019–2020). The unique history and the mediocre state of conservation of the marble may be related to body decomposition processes that, according to the documentary research, required a scientific approach to tailor an appropriate intervention. The sarcophagus underwent a bio-cleaning procedure, using bacteria belonging to the ENEA-MIRRI (Microbial Resource Research Infrastructure Italian Node) collection. Spectroscopic analysis (FTIR in ATR and in TR—total reflection—mode and XRF) and microscopic analyses allowed a correct diagnosis of the composition of the coherent deposits, guiding the selection of appropriate bacterial strains. Deposits were composed of gypsum, calcium oxalate, calcium phosphates and proteins. Following a laboratory screening and a preliminary test on-site, the three strains, Serratia ficaria SH7, Pseudomonas stutzeri CONC11 and Rhodococcus sp. ZCONT, immobilised in an appropriate supportant gel, were selected by the quality of cleaning obtained. Two applications of the micro-packs, containing each individual strain, were able to remove the centuries-old deposits within 48 h. The bio-cleaning was selective, gradual and respectful of the marble, in accordance with the restorers’ opinion and reflecting the principles of sustainability.

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Passaretti, Arianna, Luana Cuvillier, Giorgia Sciutto, Elodie Guilminot et Edith Joseph. « Biologically Derived Gels for the Cleaning of Historical and Artistic Metal Heritage ». Applied Sciences 11, n^o 8 (10 avril 2021) : 3405. http://dx.doi.org/10.3390/app11083405.

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In the general global rise of attention and research to seek greener attitudes, the field of cultural heritage (CH) makes no exception. In the last decades, an increasing number of sustainable and biologically based solutions have been proposed for the protection and care of artworks. Additionally, the safety of the target artwork and the operator must be kept as core goals. Within this scenario, new products and treatments should be explored and implemented in the common conservation praxes. Therefore, this review addressing metal heritage is aimed to report biologically derived gel formulations already proposed for this specific area as reliable tools for cleaning. Promising bio-gel-based protocols, still to be implemented in metal conservation, are also presented to promote their investigation by stakeholders in metal conservation. After an opening overview on the common practices for cleaning metallic surfaces in CH, the focus will be moved onto the potentialities of gel-alternatives and in particular of ones with a biological origin. In more detail, we displayed water-gels (i.e., hydrogels) and solvent-gels (i.e., organogels) together with particular attention to bio-solvents. The discussion is closed in light of the state-of-the-art and future perspectives.

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Grynevych, N. « ОСОБЛИВОСТІ ВИКОРИСТАННЯ БІОФІЛЬТРІВ З РІЗНИМИ ТИПАМИ НАПОВНЮВАЧА В УСТАНОВКАХ ЗАМКНУТОГО ВОДОПОСТАЧАННЯ В АКВАКУЛЬТУРІ ». Scientific Messenger of LNU of Veterinary Medicine and Biotechnology 18, n^o 3(70) (4 septembre 2016) : 57–62. http://dx.doi.org/10.15421/nvlvet7013.

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The review of literature sources that reflect the peculiarities of closed water systems (RAS) in aquaculture using bio filters with different types of filler for water cleaning. Deals with the importance of mechanical and biological filtration for RAS. Biochemical and microbiological processes inside the bio filters with movable and immovable fillers were deliberated. The attention on the need to maintain the viability of denitrification bio filters microflora. The basic factors that influence the efficiency of industrial enterprises with growing rainbow trout. The necessity of daily monitoring of water quality in RAS to prevent epizootic and nitrite poisoning grown fish. It is noted that veterinary measures in accordance with established diagnosis should be carried out in such a way that by helping one body (rainbow trout), does not affect the other (bio filters of the filtration filler). The conclusion about the need for more detailed study of the composition, physiological characteristics and biofilters role as a concomitant body during the growing aquaculture objects.

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الهجرسى, عبير. « Bio-Cleaning by Desulfovibrio vulgaris bacteria for black gypsum crust of archaeological stone ». مجلة مرکز حضارات البحر المتوسط 2, n^o 1 (1 janvier 2018) : 5–21. http://dx.doi.org/10.21608/midcul.2018.225069.

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André, Rute, Filipe Natalio, Muhammad Nawaz Tahir, Rüdiger Berger et Wolfgang Tremel. « Self-cleaning antimicrobial surfaces by bio-enabled growth of SnO2 coatings on glass ». Nanoscale 5, n^o 8 (2013) : 3447. http://dx.doi.org/10.1039/c3nr00007a.

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Aghajani, Mehdi, Ahmad Rahimpour, Hossein Amani et Mohammad J. Taherzadeh. « Rhamnolipid as new bio-agent for cleaning of ultrafiltration membrane fouled by whey ». Engineering in Life Sciences 18, n^o 5 (5 février 2018) : 272–80. http://dx.doi.org/10.1002/elsc.201700070.

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Bosch-Roig, Pilar, Hugo Allegue et Ignacio Bosch. « Granite Pavement Nitrate Desalination : Traditional Methods vs. Biocleaning Methods ». Sustainability 11, n^o 15 (5 août 2019) : 4227. http://dx.doi.org/10.3390/su11154227.

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High levels of nitrate contamination of granite stone are a major problem, affecting large surfaces of many historical monuments, particularly in the north-west of Spain. This study showed a comparison between different traditional and biotechnological desalination methods in order to evaluate the most appropriate cleaning treatment for nitrate desalination of granite. Three types of traditional desalination methods (with cellulose and/or sepiolite) were compared with two types of bacterial denitrifying treatments that used Pseudomonas stutzeri (with cotton wool or with agar 2% as delivery systems). The in-situ tests were carried in the Cristo Chapel of Stª Mª de Conxo in Santiago de Compostela (Spain), which has a high nitrate salt content in its granite pavement. Conductivity and nitrate content measurements, biological monitoring and digital image analysis were performed to determinate the efficacy of each method. The findings showed that both techniques succeeded in reducing salt content, but bio-desalination was the more effective method tested. This work contributes to the practical implementation of BTCH (Biocleaning Technologies for Cultural Heritage) for the bio-desalination of granite surfaces, and to the evaluation of the use of non-destructive cleaning techniques based on digital imaging.

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Smith, Edward, Q. Zhang, B. Farrand, V. Kokol et Jin Song Shen. « The Development of a Bio-Scouring Process for Raw Wool Using Protease ». Advanced Materials Research 441 (janvier 2012) : 10–15. http://dx.doi.org/10.4028/www.scientific.net/amr.441.10.

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The use of protease in the raw wool scouring process was investigated. Both native protease and an enlarged protease prepared by chemical modification were used. It was demonstrated that enzymatic treatment with protease in the scouring process (bio-scouring) can achieve cleaning of the fibre and modification of the cuticle layer leading to shrink-resistance. A reduction of lipid content was found and led to an improvement in dyeability of the fibre.

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Pandey, Garima. « Prospects of Nanobioremediation in Environmental Cleanup ». Oriental Journal of Chemistry 34, n^o 6 (13 décembre 2018) : 2838–50. http://dx.doi.org/10.13005/ojc/340622.

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This century is struggling with the issue of environment friendly management of the pollutants which are contaminating the environment. One of an ecofriendly and economically feasible method is the bioremediation of pollutants using bio nanoparticles. Nanobioremediation is a highly studied and explored area of remediation of contaminants using nanotechnology. Nanoparticles used for bioremediation are biologically synthesized from plant extracts, fungi and bacteria. These biogenic nanoparticles when applied to environmental contaminants had shown very promising results. Based on the various studies the bioremediation of pollutants using biosynthetic nanoparticles is emerging as a very promising and sustainable method of environment cleanup. This review focuses on the synthesis of bio-nanoparticles and their use in cleaning the environment.

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Cao, Yang, Meng Zhou et Heqing Fu. « Fluorine‐Free Bio‐Based Multifunctional Superhydrophobic Hyperbranched Self‐Cleaning Coating for Oil‐Water Separation ». Macromolecular Materials and Engineering 307, n^o 1 (9 novembre 2021) : 2100508. http://dx.doi.org/10.1002/mame.202100508.

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Zheng, Shunli, Daniel Angel Bellido-Aguilar, Xinghua Wu, Xuejun Zhan, Yinjuan Huang, Xianting Zeng, Qichun Zhang et Zhong Chen. « Durable Waterborne Hydrophobic Bio-Epoxy Coating with Improved Anti-Icing and Self-Cleaning Performance ». ACS Sustainable Chemistry & ; Engineering 7, n^o 1 (12 décembre 2018) : 641–49. http://dx.doi.org/10.1021/acssuschemeng.8b04203.

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Dinh Le, Truong-Son, Jianing An, Yi Huang, Quoc Vo, Jeeranan Boonruangkan, Tuan Tran, Seung-Woo Kim, Gengzhi Sun et Young-Jin Kim. « Ultrasensitive Anti-Interference Voice Recognition by Bio-Inspired Skin-Attachable Self-Cleaning Acoustic Sensors ». ACS Nano 13, n^o 11 (5 novembre 2019) : 13293–303. http://dx.doi.org/10.1021/acsnano.9b06354.

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Vischetti, C., E. Monaci, L. Coppola, M. Marinozzi et C. Casucci. « Evaluation of BiomassBed system in bio-cleaning water contaminated by fungicides applied in vineyard ». International Journal of Environmental Analytical Chemistry 92, n^o 8 (11 novembre 2011) : 949–62. http://dx.doi.org/10.1080/03067319.2011.609934.

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Wang, Feiyue, Hui Liu et Long Yan. « Comparative Study of Fire Resistance and Char Formation of Intumescent Fire-Retardant Coatings Reinforced with Three Types of Shell Bio-Fillers ». Polymers 13, n^o 24 (10 décembre 2021) : 4333. http://dx.doi.org/10.3390/polym13244333.

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Three types of shell bio-fillers, including eggshell (CES), conch shell (CHS) and clamshell (CMS), were prepared by cleaning, ultrasonication and pulverizing processes of biowastes, and then applied to intumescent fire-retardant coatings. The effects of shell bio-fillers with different polymorphs on the fire resistance and char-forming of intumescent fire-retardant coatings were investigated by cone calorimeter test, fire protection tests, smoke density test, thermogravimetric analysis (TG), and the fire resistance and char-forming mechanism of bio-fillers in intumescent fire-retardant coatings were proposed. The results show that three kinds of bio-fillers exert an excellent synergistic effect on enhancing the fire resistance and char-forming properties of the intumescent fire-retardant coatings, while clamshell has the best synergistic efficiency among the bio-fillers. Especially, IFRC-CMS coating containing 3 wt% clamshell shows the best fire protection performance and lowest smoke production and heat release, which offers an equilibrium backside temperature of 134.6 °C at 900 s, a flame-spread rating of 14.4, and a smoke density rating value of 22.8%. The synergistic efficiency of bio-fillers in the intumescent coatings depends on the polymorphs of CaCO3 in bio-fillers, and aragonite CaCO3 shows a higher synergistic efficiency compared to calcite CaCO3 and the mixture of aragonite and calcite CaCO3. The CMS composed of aragonite shows the best synergistic effect, CHS composed of aragonite and calcite comes second, and CES composed of calcite has the weakest synergistic effect.

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Abbott, S. J., et P. H. Gaskell. « Mass production of bio-inspired structured surfaces ». Proceedings of the Institution of Mechanical Engineers, Part C : Journal of Mechanical Engineering Science 221, n^o 10 (30 septembre 2007) : 1181–91. http://dx.doi.org/10.1243/09544062jmes540.

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Bio-inspired surface structures offer significant commercial potential for the creation of antireflective, self-cleaning and drag reducing surfaces, as well as new types of adhesive systems. The current article explores how the current understanding of the basic science of the biological structures occurring on the surface of moth eyes, leaves, sharkskin, and the feet of reptiles can be transferred to functional man-made materials, some of the drawbacks of which are shown to offer a long-term challenge to engineers. Explored also is the related topic of how such surfaces can be mass-produced, encompassing the important areas of current surface replication techniques and the associated acquisition of good master structures.

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Sailah, Illah, Erliza Hambali et Fadilla Eka Aulyana. « Formulation of Biodegreaser Made from Palm Oil Methyl Ester Sulfonate Surfactant with Oxalic Acid Additive ». International Journal of Oil Palm 4, n^o 2 (15 décembre 2021) : 39–45. http://dx.doi.org/10.35876/ijop.v4i2.62.

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The development of bio degreaser made from palm oil surfactant aims to substitute bio degreaser made from petroleum surfactant which is less environmentally friendly. The development was carried out by formulating palm methyl ester sulfonate (MES) surfactant with oxalic acid as metal or non-metal cleaning agent. The purpose of this study was to obtain the best concentration of oxalic acid in the bio degreaser formulation. The concentrations of oxalic acid tested were 7, 8, and 9%. The best concentration of oxalic acid was determined based on the results of characteristic tests and detergency tests, namely 7% oxalic acid concentration. The resulting bio degreaser product has a pH of 1.6; viscosity 1.39 cp; specific gravity of 1.012; surface tension 32 dyne/cm and detergency power 84%. Furthermore, the resulting bio degreaser was added with Diethanolamioda (DEA) surfactant. The purpose of adding DEA surfactant is to increase the pH and lower the surface tension. The formulation results showed an increase in pH from 1.6 to 3.2 and a decrease in surface tension from 31.97 dyne/cm to 28.70 dyne/cm. In addition, there was an increase in viscosity from 1.39 cp to 1.62 cp and specific gravity from 1.012 to 1.018.

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Sailah, Illah, Erliza Hambali et Fadilla Eka Aulyana. « Formulation of Biodegreaser Made from Palm Oil Methyl Ester Sulfonate Surfactant with Oxalic Acid Additive ». International Journal of Oil Palm 2, n^o 2 (15 décembre 2021) : 39–45. http://dx.doi.org/10.35876/ijop.v2i2.62.

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The development of bio degreaser made from palm oil surfactant aims to substitute bio degreaser made from petroleum surfactant which is less environmentally friendly. The development was carried out by formulating palm methyl ester sulfonate (MES) surfactant with oxalic acid as metal or non-metal cleaning agent. The purpose of this study was to obtain the best concentration of oxalic acid in the bio degreaser formulation. The concentrations of oxalic acid tested were 7, 8, and 9%. The best concentration of oxalic acid was determined based on the results of characteristic tests and detergency tests, namely 7% oxalic acid concentration. The resulting bio degreaser product has a pH of 1.6; viscosity 1.39 cp; specific gravity of 1.012; surface tension 32 dyne/cm and detergency power 84%. Furthermore, the resulting bio degreaser was added with Diethanolamioda (DEA) surfactant. The purpose of adding DEA surfactant is to increase the pH and lower the surface tension. The formulation results showed an increase in pH from 1.6 to 3.2 and a decrease in surface tension from 31.97 dyne/cm to 28.70 dyne/cm. In addition, there was an increase in viscosity from 1.39 cp to 1.62 cp and specific gravity from 1.012 to 1.018.

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Wahyuni, Ni Putu Diah, et C. Dewi Hartati. « TRADISI SEMBAHYANG CIOKO (鬼節Guǐ Jié) DI PAN KHO BIO, BOGOR CIOKO (鬼節Guǐ Jié) TRADITION IN PAN KHU BIO, BOGOR ». Bambuti 2, n^o 2 (28 juin 2021) : 1–12. http://dx.doi.org/10.53744/bambuti.v2i2.14.

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Cioko as one of the ceremonial traditions in Chinese culture has a meaning as a sense of devotion to the ancestors for the Chinese community. They believe that in this world humans do not live alone and their ancestors can still witness from a different realm. Prayers are performed to remember the ancestors and so that the ancestors are calm in their nature. This prayer also aims to ask for protection from their ancestors. Similarly, the Chinese in Bogor held the Cioko ceremony at a temple in Bogor, namely Pan Khu Bio. In addition to the Chinese community who held the Cioko celebration, the people who lived around Pan Kho Bio also helped during Cioko. Starting from preparation, helping decorate the temple to cleaning the temple after Cioko finished. Despite differences in beliefs, residents help each other at the temple and form a social bond.

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Ruginescu, Robert, Madalin Enache, Octavian Popescu, Ioana Gomoiu, Roxana Cojoc, Costin Batrinescu-Moteau, Gabriel Maria, Maria Dumbravician et Simona Neagu. « Characterization of Some Salt-Tolerant Bacterial Hydrolases with Potential Utility in Cultural Heritage Bio-Cleaning ». Microorganisms 10, n^o 3 (17 mars 2022) : 644. http://dx.doi.org/10.3390/microorganisms10030644.

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Salt-tolerant enzymes produced by halophilic and halotolerant microorganisms have been proposed to be used in various applications that involve high saline conditions. Considering their biotechnological significance and the current need for more efficient producers of such catalysts, the present study aimed to evaluate the extracellular proteolytic, esterolytic, cellulolytic and xylanolytic activities of some halotolerant strains, and to characterize their functional parameters. A total of 21 bacterial and fungal strains belonging to the genera Bacillus, Virgibacillus, Salinivibrio, Salinicoccus, Psychrobacter, Nocardiopsis, Penicillium, Aspergillus, and Emericellopsis were assayed by quantitative methods. Among them, the members of the Bacillus genus exhibited the highest catalytic activities. The exoenzymes produced by three selected Bacillus strains were active over wide ranges of salinity, temperature and pH. Proteases were active at 20–80 °C, pH 6–10, and 0–1 M NaCl, while esterases showed good catalytic activities at 20–80 °C, pH 7.5–10, and 0–4 M NaCl. Cellulases and xylanases were active at 20–80 °C, pH 5–10, and 0–5 M NaCl. Due to such properties, these hydrolases could be used in a newly proposed application, namely to clean aged consolidants and organic deposits accumulated over time from the surfaces of salt-loaded wall paintings.

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Lu, Ruiyang, Yucong Yu, Gafurov Adkhamjon, Wenli Gong, Xiaoqing Sun et Lin Liu. « Bio-inspired cotton fabric with superhydrophobicity for high-efficiency self-cleaning and oil/water separation ». Cellulose 27, n^o 12 (10 juin 2020) : 7283–96. http://dx.doi.org/10.1007/s10570-020-03281-9.

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Jung, Jong-Hyeon, Young-Soo Lee, Kyung-Seun Yoo, Hyung-Keun Lee, Kwang-Joong Oh et Byung-Hyun Shon. « Reactivity of bio-sorbent prepared by waste shells of shellfish in acid gas cleaning reaction ». Korean Journal of Chemical Engineering 22, n^o 4 (juillet 2005) : 566–68. http://dx.doi.org/10.1007/bf02706644.

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Du, Zhao, Feng Ying Fu, Ai Ling Ren et Ding Chao Zhang. « Evaluation of VOCs Purification System from Wastewater in a Shijiazhuang Bio-Pharmaceutical Factory ». Applied Mechanics and Materials 361-363 (août 2013) : 809–13. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.809.

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The characteristics and purification effect of wastewater VOCs from a shijiazhuang bio-pharmaceutical factory were studied throμg h summa canister , preconcentration system and meteorological chromatography - mass spectrometry (GC - MS) . The VOCs are classified according to the functional groups, boiling point, molecular weight and carbon number, and its characteristics and treatment process were discussed based on total emissions, kinds, alkaline cleaning efficiency, biological efficiency and total efficiency. The results show that the largest concentrations of VOCs is the sulfur-containing compounds, boiling point of 81 ~ 110 °C and molecular weight of 20 ~ 50, which has better treatment effect, and efficiencies are above 99%.

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Jaouhar, Samira, Abdelhakim El Ouali Lalami, Khadija Ouarrak, Jawad Bouzid, Mohammed Maoulouaa et Khadija Bekhti. « Bio contamination of surfaces and medical devices in controlled environment areas at a hospital in Morocco ». E3S Web of Conferences 319 (2021) : 01080. http://dx.doi.org/10.1051/e3sconf/202131901080.

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The hospital environment, especially medical devices and surfaces, represents a secondary reservoir for pathogens. This work aims to evaluate the microbiological quality of surfaces and medical equipment of controlled environment services (burn unit, operating room, and sterilization service) at a hospital in Meknes (center of Morocco). This study was carried out for three months (September-December of 2017). A total of 63 samples were taken by swabbing technique from different surfaces and medical equipment after bio-cleaning. Identification was performed according to conventional bacteriological methods and by microscopic observation for fungi. The study showed that 68% of the surface was contaminated. The operating room recorded a rate of 93% of contamination (p-value <0.01), 83% for sterilization service, and 47% for burn unit. A percentage of 67% of the isolates were identified as Gram-positive bacteria against 32% Gram-negative bacteria (p-value <0.05). Bacterial identification showed Coagulase-negative Staphylococci (45%), Enterobacter cloacae (14%), Micrococcus sp (10%), Klebsiella pneumoniae, peptostreptococcus sp and Pseudomonas fluorescens (7% for each one), Escherichia coli, and Methicillin-resistant Staphylococcus aureus (5% for each one). These results require corrective action represented by rigorous cleaning and disinfection procedures.

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