Academic literature on the topic 'Chemical cleaning procedures'

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Journal articles on the topic "Chemical cleaning procedures"

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Beyer, Florian, Judita Laurinonyte, Arie Zwijnenburg, Alfons J. M. Stams, and 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
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Brepols, C., K. Drensla, A. Janot, M. Trimborn, and N. Engelhardt. "Strategies for chemical cleaning in large scale membrane bioreactors." Water Science and Technology 57, no. 3 (2008): 457–63. http://dx.doi.org/10.2166/wst.2008.112.

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Systematically testing alternative cleaning agents and cleaning procedures on a large scale municipal membrane bioreactor, the Erftverband optimized the cleaning strategies and refined the original cleaning procedures for the hollow fiber membranes in use. A time-consuming, intensive ex-situ membrane cleaning twice a year was initially the regular routine. By introducing the effective means of cleaning in place in use today, which employs several acidic and oxidative/alkaline cleaning steps, intensive membrane cleaning could be delayed for years. An overview and an assessment of various cleani
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Asshofi, Izza Ulumuddin Ahmad. "Efficient Use of Chemicals in Cleaning Rooms at Hatten Hotel Melaka." Jurnal Akademi Pariwisata Medan 12, no. 1 (2024): 24–35. https://doi.org/10.36983/japm.v12i1.609.

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The use of chemicals in room cleaning is an important aspect in the hospitality industry to ensure room cleanliness and the health of guests and room attendants. This final project examines the efficiency of chemical use in room cleaning with a focus on optimizing the quality of chemicals used and their application methods. The purpose of this final project is to explain efficiency and identify the use of chemicals that can reduce the waste of chemical use in room cleaning and describe the standard operating procedures for using chemicals at Hatten Hotel Melaka in cleaning rooms. This research
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WIRTANEN, GUN, ULRIKA HUSMARK, and TIINA MATTILA-SANDHOLM. "Microbial Evaluation of the Biotransfer Potential from Surfaces with Bacillus Biofilms after Rinsing and Cleaning Procedures in Closed Food-Processing Systems." Journal of Food Protection 59, no. 7 (1996): 727–33. http://dx.doi.org/10.4315/0362-028x-59.7.727.

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The biotransfer potential in food processing is defined as the ability of the microorganisms present on equipment surfaces both before and after cleaning procedures to contaminate products during processing. Growth of Bacillus biofilms was detectable on both stainless-steel and Teflon© surfaces after all the cleaning procedures. B. cereus and B. subtilis cells adhered more firmly to unsoiled than to soiled surfaces, whereas B. thuringiensis adhered most firmly to soiled surfaces. The results showed that the removal of biofilms from surfaces was more difficult from stainless steel because the m
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Cazzaniga, Ilaria, Marco Gargano, Claudia Invernizzi, et al. "A Multi-Analytical Non-Invasive Approach to Aqueous Cleaning Systems in Treatments on Bowed String Musical Instruments." Coatings 11, no. 2 (2021): 150. http://dx.doi.org/10.3390/coatings11020150.

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Restoration and conservation procedures for historical musical instruments involve several issues, also connected with their frequent being played. One of the most delicate procedures for their preservation is the cleaning of surfaces from soil and dirt which have accumulated over the years. In fact, when external particles reach the surface, a fraction of them can deposit on it. Moreover, the contact with the player can generate chemical-physical changes, rapidly warming and wetting the surfaces through sweat deposition. This work focused on the cleaning methods of surfaces of bowed string mu
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Angermann, Heike, Klaus Wolke, Christiane Gottschalk, et al. "Surface Charge and Interface State Density on Silicon Substrates after Ozone Based Wet-Chemical Oxidation and Hydrogen-Termination." Solid State Phenomena 195 (December 2012): 314–17. http://dx.doi.org/10.4028/www.scientific.net/ssp.195.314.

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For more than 20 years, the application of ozone dissolved in pure deionised water (DIW-O3) has been investigated for wafer-cleaning and resist stripping applications in the semiconductor industry [, , ]. To reduce chemical consumption and disposal costs as well as to improve cleaning efficiency, DIW-O3 is used in semiconductor wet cleaning processes as an alternative to traditional sulphuric acid peroxide (H2SO4/H2O2) [] and RCA [] cleans. Silicon solar cell fabrication includes multiple wet cleaning steps involving large amounts of chemicals. In Si substrate manufacturing the wet-chemical ox
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Huda, Hairul, Renanto Handogo, Totok Ruki Biyanto, Wei Wu, and Vincentius Surya Kurnia Adi. "Oil Refinery Heat Exchanger Network Cleaning Scheduling Strategy with Unit Cleanability Consideration." ASEAN Journal of Chemical Engineering 20, no. 1 (2020): 31. http://dx.doi.org/10.22146/ajche.51880.

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Heat exchanger networks (HENs) play an important role in the chemical industries. Unfortunately, fouling is inevitable in heat exchangers operation. Therefore, the optimal cleaning procedure is required to restore heat exchangers' performance periodically. A systematic cleaning scheduling strategy for the heat exchanger network in an oil refinery is proposed in this work. There are 11 operating heat exchangers in an oil refinery to be reviewed. Different cleaning decision scenarios based on the overall heat transfer coefficient are explored for optimal cleaning schedule performance. The daily
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Gul, Aysegul, Jakub Hruza, and Fatma Yalcinkaya. "Fouling and Chemical Cleaning of Microfiltration Membranes: A Mini-Review." Polymers 13, no. 6 (2021): 846. http://dx.doi.org/10.3390/polym13060846.

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Membrane fouling is one of the main drawbacks encountered during the practical application of membrane separation processes. Cleaning of a membrane is important to reduce fouling and improve membrane performance. Accordingly, an effective cleaning method is currently of crucial importance for membrane separation processes in water treatment. To clean the fouling and improve the overall efficiency of membranes, deep research on the cleaning procedures is needed. So far, physical, chemical, or combination techniques have been used for membrane cleaning. In the current work, we critically reviewe
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Coraça-Huber, Débora C., Johann Hausdorfer, Manfred Fille, Magdalena Steidl, and Michael Nogler. "Effect of two cleaning processes for bone allografts on gentamicin impregnation and in vitro antibiotic release." Cell and Tissue Banking 14, no. 2 (2012): 221–29. https://doi.org/10.1007/s10561-012-9314-4.

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Bone allografts are a useful and sometimes indispensable tool for the surgeon to repair bone defects. Microbial contamination is a major reason for discarding allografts from bone banks. To improve the number of safe allografts, we suggest chemical cleaning of the grafts followed by antibiotic impregnation. Comparison of two chemical cleaning processes for bone allografts aiming for antibiotic impregnation and consequently delivery rates in vitro. Bone chips of 5–10 mm were prepared from human femoral heads. Two cleaning methods (cleaning A and cleaning B) based on solutions contain
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Grant, Donald, Dan Smith, Peter Palm, et al. "Design and Certification of High Purity Delivery Systems for Semiconductor Wafer Cleaning Chemicals." Journal of the IEST 37, no. 6 (1994): 32–40. http://dx.doi.org/10.17764/jiet.2.37.6.r62726744v254354.

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The wafer cleaning procedures used in new semiconductor manufacturing facilities require extremely high purity chemicals. Delivering chemicals of this quality requires careful management of the chemicals from their manufacturing site to the points of use (POUs) within the wafer fabrication facility (fab). Chemical management includes proper chemical production, transportation to the wafer fab and design and operation of the chemical delivery system within the fab. This paper describes the technology used to supply 15 different types of chemicals to more than 60 POUs in the TECH Semiconductor w
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Dissertations / Theses on the topic "Chemical cleaning procedures"

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Novak, Maria L. "Optimal Strategy to Develop Cleaning Procedures for Filling Machines Equipped with Clean-in-Place (CIP) Technology." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613747962470201.

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Books on the topic "Chemical cleaning procedures"

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1947-, Clayton John R., Risk Reduction Engineering Laboratory (U.S.), and Science Applications International Corporation, eds. Chemical shoreline cleaning agents: Evaluation of two laboratory procedures for estimating performance. Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1993.

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1947-, Clayton John R., Risk Reduction Engineering Laboratory (U.S.), Science Applications International Corporation, and United States. Environmental Protection Agency. Office of Research and Development., eds. Chemical shoreline cleaning agents: Evaluation of two laboratory procedures for estimating performance. Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1993.

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An atmospheric atomic oxygen source for cleaning smoke damaged art objects. National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Jacobson, David M., and Giles Humpston. Principles of Brazing. ASM International, 2005. http://dx.doi.org/10.31399/asm.tb.pb.9781627083515.

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Principles of Brazing serves as a problem-solving guide for anyone who works with brazing processes or designs component joints. It covers key brazing parameters such as surface energy and tension, wetting and contact angle, and filler spreading characteristics; design considerations including mechanical integrity and electrical and thermal conductivity; and practical concerns such as workholding, cleaning procedures, and process control. It discusses the metallurgy of brazing alloy systems; the effect of impurities, joining atmospheres, and chemical fluxes; and the role of materials in defini
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Book chapters on the topic "Chemical cleaning procedures"

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Mazzoli, Roberto, and Enrica Pessione. "Ancient Textile Deterioration and Restoration: Bio-Cleaning of an Egyptian Shroud Held in the Torino Museum." In Microorganisms in the Deterioration and Preservation of Cultural Heritage. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69411-1_9.

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AbstractAncient textiles are fragile and several factors can affect their integrity. In the present chapter, the main agents of deterioration of old and new textiles, namely physical-chemical (light, oxygen, heat, and humidity) and biological factors as well as human erroneous interventions will be explored. As far as the biological deterioration is considered, the effects of microbial growth, primary and secondary metabolites (acids, solvents, surfactants, pigments) and enzymes (lipases, proteases, and glycosidases) on textile strength and cleanliness will be described in details. The main fu
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Killcross, Martin. "Cleaning procedures and drying." In Chemical and Process Plant Commissioning Handbook. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-824049-6.00018-4.

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"Cleaning and Finishing." In Superalloys, 2nd ed. ASM International, 2002. http://dx.doi.org/10.31399/asm.tb.stg2.t61280203.

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Abstract Superalloys are susceptible to damage from a variety of surface contaminants. They may also require special surface finishes for subsequent processing steps such as coating applications. This chapter describes some of the cleaning and finishing procedures that have been developed for superalloys and how they work. It discusses the effect of metallic contaminants, tarnish, oxide, and scale and how they can be detected and removed. It also discusses chemical and mechanical surface finishing techniques and where they are used, and presents several application examples.
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Nayak, Jayato, and Sankha Chakrabortty. "Role of nanotechnology in environmental cleaning." In Clean Technologies Toward the Development of a Sustainable Environment and Future. IWA Publishing, 2023. http://dx.doi.org/10.2166/9781789063783_0263.

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Abstract Air, water, and soil pollution pose serious threats to ecosystem health and should be prioritized as a global issue of paramount importance. Emerging technologies such as ‘nanoremediation,’ which embraces the concept of nanotechnology through the development of nanoparticles (NPs), join established procedures such as thermal treatment, pump-and-treat, and chemical oxidation in the arsenal of remediation approaches. Nanoremediation is the process of using designed NPs to clean up polluted medium; it is more efficient and cost-effective than conventional approaches. Nanomaterials' uniqu
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Haikara, A., I. Virkajarvi, J. Kronlof, and E. Pajunen. "Microbiological contaminations in immobilized yeast bioreactors for primary fermentation." In European Brewery Convention. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780199636907.003.0052.

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Abstract Microbiological purity in beer fermentation is a prerequisite, particularly in continuous fermentation. In contrast to secondary fermentation a wide range of micro-organisms was able to attach and grow in immobilized yeast bioreactors for primary fermentation. Wort bacteria with high specific growth rates were the most hazardous ones, producing off-flavours such as dimethyl sulphide. A Saccharomyces wild yeast caused both superattenuation and formation of phenolic off-flavours. Lactic acid bacteria were neither able to multiply nor to produce off-flavours. Aseptic treatment of wort an
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Prabhu, N., A. Archana, G. Someshwari, et al. "Myconanoremediation of various environmental toxicants: challenges and future perspectives." In Clean Technologies Toward the Development of a Sustainable Environment and Future. IWA Publishing, 2023. http://dx.doi.org/10.2166/9781789063783_0197.

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Abstract The application of nanotechnology in the area of environment has been studied extensively. With the rise in environmental challenges, one of biotechnology's primary concerns is the remediation of the environment. This technique can be called bioremediation and it works to decontaminate the environment by using microorganisms like fungi or their enzymes to break down hazardous compounds into non-hazardous ones. The combination of various particle and organism types, including fungi along with nanotechnology, can offer ecologically responsible alternatives for bioremediation. Nanopartic
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Khalid, Erum. "Green Synthesis of Nanoparticles and Their Application in Nanofiltration Membranes for Drinking Water Treatment." In Advances in Water Resources Science [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1007565.

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Nanotechnology, one of the fastest evolving fields, focuses on creating nanoparticles (NPs) smaller than 100 nm. The utilization of natural resources to generate nanoparticles, or “green synthesis,” is a scientific advance in nanotechnology that outperforms physical and chemical synthesis procedures. Its sustainability, low toxicity, high yield, and fewer side effects have proven its high-end benefits to humanity. Currently, nanoscience is extensive. An important application of nanotechnology is in water purification, critical for human health as 80% of diseases arise from bacterial contaminat
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Hao, Zhigang, Vivian Liu, Jake Salerno, Yu Wang, Mania Bankova, and Long Pan. "Liquid Extraction for Flavor and Fragrance Analyses in Consumer Products." In Recent Advances in Gas Chromatography [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.107107.

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Gas chromatography-mass spectrometry is a powerful tool to analyze flavor and fragrance from raw materials to the final commercial products. During the development of new technologies, most focuses have been given to novel columns, advanced detectors, and automation designs to leverage the instrument capabilities. The fundamental factors including polarity impact on sample homogenization and chemical interaction between analytes and extraction solvents are not equally emphasized during the sampling procedures. The current project focused on the liquid extraction procedures prior to GCMS analys
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Magee, Patrick, and Mark Tooley. "Cleaning and Sterilisation of Equipment." In The Physics, Clinical Measurement and Equipment of Anaesthetic Practice for the FRCA. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199595150.003.0034.

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Although a proportion of anaesthetic and surgical equipment is disposable nowadays, there is still a significant amount of cleaning and sterilisation required, and with the emergence of new organisms, the methods used have come under closer scrutiny. It is worth noting, in passing, that hand cleanliness of staff coming into contact with patients has also come under close scrutiny in recent years. Cleaning of equipment involves the physical removal of as much of the infectious agent as possible, usually using water and a detergent, and is an important precursor to disinfection or sterilisation.
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de Souza, Breno Estevam Silva, Eduardo Vinicius de Souza Silva, Eduarda Gomes Onofre de Araújo, et al. "GUIDED ENDODONTICS IN A TOOTH AFFECTED BY CALCIFIC." In Modern Dentistry: New Approaches and Technologies. Seven Editora, 2025. https://doi.org/10.56238/sevened2025.014-005.

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Endodontic treatment is a procedure that involves a series of techniques, including mechanical instrumentation, chemical debridement, and obturation of the root canal system, with the aim of maintaining and/or restoring the health of the affected tooth and surrounding tissues. Among the challenges faced in endodontic practice, pulp calcification is a relevant condition, characterized by the deposition of calcified tissue on the walls of the pulp tissue, resulting in partial or total obliteration of the root canal. This study aimed to report a case involving treatment with Guided Endodontics of
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Conference papers on the topic "Chemical cleaning procedures"

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MacDonald, S. "Preoperational Chemical Cleaning of Heat Recovery Steam Generators." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03582.

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Abstract Combined-cycle power generation has become very popular for utilities wishing to increase their power production capacity. Compared to conventional coal-fired units, combined-cycle plants are less expensive, easier to install, have a higher efficiency, and, at the time of this study, are less subject to environmental regulations. An integral component of a combined-cycle unit is the heat recovery steam generator (HRSG). Although heat fluxes in an HRSG are typically lower than in a standard boiler,1 water chemistry issues are just as critical. One topic of extensive discussion among po
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DeLong, E. W. "Boiler Chemical Cleaning Experience at Northern Indiana Public Service Company." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85180.

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Abstract The electric utility industry operates several different types of steam generators under various operating conditions. During normal operations, deposits build up in the steam generators which are removed periodically by chemical cleaning. These deposits are a result of condenser in-leakage, boiler water chemistry excursions, inadequate boiler storage procedures, the amount of air inleakage, and the number of boiler start-ups. Failure to remove these deposits results in boiler tube overheat and failure. Each type of utility boiler is cleaned in a slightly different manner. Drum type b
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Ramírez, M., and A. Viloria. "A Methodology for the Evaluation of Chemical Treatments Used in Cleaning of Refinery Components and Equipments." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03650.

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Abstract To evaluate, at laboratory scale, different chemical treatments commonly used in cleaning of refinery components and equipment, a methodology was developed. This method consisted in exposing deposit samples to the cleaning solutions by periods corresponding to those used in real cleaning procedures, and then quantify the weight loss of such specimens. This was related to the performance of treatments studied. In addition to the efficiency as cleaning products, corrosivity of these chemical treatments was measured through weight loss tests.
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Lindert, Andreas, and William G. Johnston. "New Low Toxicity Corrosion Inhibitors for Industrial Cleaning Operations." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99107.

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Abstract Inhibitors are routinely employed in chemical cleaning solvents used for removing scale from electrical power plants and industrial equipment since these cleaning solvents are corrosive to metal surfaces. This paper discusses the development of three new inhibitors developed for use in hydrochloric acid, ammoniated EDTA or Citric acid chemical cleaning solutions. Synthesis procedures used in the production of Mannich derivatives employed in the inhibitors were optimized for maximum corrosion resistance and reduced toxicity. All auxiliary ingredients used in the formulation of final in
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Selby, K. Anthony, and Robert T. Hess. "The Use of Polymers for On-Line Cleaning of Building Water Systems." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96524.

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Abstract The cooling or heating piping systems in commercial or institutional buildings are frequently fouled by the accumulation of deposits containing organic material, silt and/or iron oxide. A conventional off-line chemical cleaning with an acid or other strong solvent is a very complex and expensive process in these facilities. They are not designed for such cleaning procedures, are typically occupied most of the time and the piping is enclosed within walls. A slow on-line cleaning over a long period of time has been found to be effective in several applications. Such a cleaning uses high
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Bozeka, C. G., and F. J. Pocock. "Waterside Corrosion Control in Industrial Boilers." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85249.

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Abstract This paper describes water conditioning for industrial boilers. It includes recommended operating water quality limits for reliable operation. The various, current feedwater and boiler water treatment methods are discussed, along with chemical cleaning procedures. Illustrated examples of tube deposition and their effects are included along with analyses of typical waterside deposits.
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Langhals, Tom, Gene Heitmeyer, Ryan Smith, and Chad Sellman. "Decision Making Process for Applying Military Coatings (Carc-Chemical Agent Resistant Coating, Epoxies, Urethanes, and Others)." In SSPC 2011. SSPC, 2011. https://doi.org/10.5006/s2011-00031.

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This a basic profile to help in making a decision if getting into the Military coating business is good for you. Its purpose is to enhance ones thought process and learning techniques regarding some of the following considerations before taking that leap: Are you already applying liquid paint and/or powder coatings?The experience of your personnel.Is documentation and written procedures part of your norm?Do you have a quality system in place (ISO or TS certified)?Are you aware of your areas environmental regulations?Type of equipment needed.Do you have abrasive and/or chemical cleaning availab
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Langhals, Tom, Gene Heitmeyer, Ryan Smith, and Chad Sellman. "Decision Making Process for Applying Military Coatings (CARC-Chemical Agent Resistant Coating, Epoxies, Urethanes, and Others." In Paint and Coatings Expo (PACE) 2010. SSPC, 2010. https://doi.org/10.5006/s2010-00026.

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This a basic profile to help in making a decision if getting into the Military coating business is good for you. Its purpose is to enhance ones thought process and learning techniques regarding some of the following considerations before taking that leap: Are you already applying liquid paint and/or powder coatings?The experience of your personnel.Is documentation and written procedures part of your norm?Do you have a quality system in place (ISO or TS certified)?Are you aware of your areas environmental regulations?Type of equipment needed.Do you have abrasive and/or chemical cleaning availab
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Hendrix, David E. "The Influence of Water Cycle Chemistry in the Failure of Waterwall Tubes in a High Pressure Boiler Due to Hydrogen Attack." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95613.

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Abstract This paper describes three case histories concerning the similar failures of waterwall tubes in two 1800 psig (12 MPa) boilers from hydrogen attack. The paper discusses the laboratory failure analyses conducted, the effects of previous "window" repairs and boiler water chemistry on the failures, the repair procedures developed for replacement tube sections to minimize future hydrogen-attack failures, and the inspection techniques used to detect hydrogen damage in unfailed tubes. Specific corrosion mechanisms and circumstances leading to the hydrogen attack failures are proposed, and t
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Hansen, Greg. "‘Clearing the Hurdles’ - A Look at the South Valley Sewer District, Jordan Basin WRF Membrane Basins Rehabilitation Project." In Coatings+ 2019. SSPC, 2019. https://doi.org/10.5006/s2019-00023.

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The South Valley Sewer District, located outside of Salt Lake City, Utah, experienced severe degradation of the concrete substrate the Membrane Basins at the Jordan Basin WRF. The Bowen Collins & Associates designed facility initially opened for service in July of 2012. By 2017 the facility was showing significant effects of concrete deterioration from chemical attack, caused by citric acid and sodium hypochlorite used as a part of the cleaning procedures in the membrane basins. This paper explains the background that led to the rehabilitation required; the team work employed by the engine
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Reports on the topic "Chemical cleaning procedures"

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Torrijos, Ivan Dario Pinerez, Tina Puntervold, Skule Strand, Panagiotis Aslanidis, Ingebret Fjelde, and Aleksandr Mamonov. Core restoration: A guide for improved wettability assessments. University of Stavanger, 2021. http://dx.doi.org/10.31265/usps.198.

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The initial wetting of a reservoir sets a limit for the EOR potential during water-based recovery operations and “Smart Water” injection. For this reason, an improved understanding of the factors influencing the wetting can help to control and better forecast oil production during water-based floods. To preserve and reproduce the original reservoir wettability is a challenging task and wrong cleaning and core restoration procedures can lead to incorrect wettability estimations and thus induce serious errors when evaluating the initial wettability of a reservoir system or its EOR potential by w
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