Academic literature on the topic 'Chlorine treated water'

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Journal articles on the topic "Chlorine treated water"

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Rodriguez, Rocio Aranda, Boniface Koudjonou, Brian Jay, Guy L. LeBel, and Frank M. Benoit. "Disinfection By-Products (DBPs) in Drinking Water from Eight Systems Using Chlorine Dioxide." Water Quality Research Journal 43, no. 1 (2008): 11–22. http://dx.doi.org/10.2166/wqrj.2008.003.

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Abstract A study was initiated to determine the presence of organic disinfection by-products (DBPs) in drinking water treated with chlorine dioxide (ClO2). One potential advantage for the use of ClO2 as a disinfectant is the reduced formation of organic DBPs. Generally, water treated with ClO2 produces chlorite and chlorate ions, but there is limited information regarding the presence of halogenated organic DBPs. Eight systems that use chlorine dioxide as part of the water disinfection process were investigated. All systems in this study applied chlorine as a primary or secondary disinfectant
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Gordon, Gilbert, Bregt Slootmaekers, Satoshi Tachiyashiki, and Delmer W. Wood. "Minimizing Chlorite Ion and Chlorate Ion in Water Treated With Chlorine Dioxide." Journal - American Water Works Association 82, no. 4 (1990): 160–65. http://dx.doi.org/10.1002/j.1551-8833.1990.tb06947.x.

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Ma, Kai, Jiankun Hu, Hongda Han, Lin Zhao, Rong Li, and Xiao Su. "Characters of chloramine decay in large looped water distribution system – the case of Tianjin, China." Water Supply 20, no. 4 (2020): 1474–83. http://dx.doi.org/10.2166/ws.2020.063.

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Abstract In the water distribution system of a large city, chloramine could experience rapid decay as residence time extends, which may further threaten drinking water safety. A correlation analysis was conducted between the total chlorine residual of four sites on the distribution system and the water quality of the corresponding water treatment plant with data from 2016 to 2018 for the city of Tianjin. The results showed that the total chlorine residuals of all sites were negatively correlated with the temperature of the treated water, while the total chlorine residual of pipeline water did
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Marchesi, Isabella, Greta Ferranti, Annalisa Bargellini, et al. "Monochloramine and chlorine dioxide for controlling Legionella pneumophila contamination: biocide levels and disinfection by-product formation in hospital water networks." Journal of Water and Health 11, no. 4 (2013): 738–47. http://dx.doi.org/10.2166/wh.2013.079.

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Legionella colonization in hospital hot water distribution networks was evaluated following 36 months of continuous treatment with monochloramine and compared with chlorine dioxide. Nitrite, nitrate, chlorite, chlorate, bromide, trihalomethanes and haloacetic acids as well as the biocide concentration at sampled points were measured. Only 8/84 samples treated with monochloramine were found contaminated and after the first 8 months of treatment no Legionella was isolated. Chlorine dioxide was associated with a strong reduction in Legionella contamination compared to pre-treatment, but differenc
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Qian, Yichao, Wei Wang, Xing-Fang Li, and Steve E. Hrudey. "Evaluation of approaches for consumers to eliminate chlorine off-flavors from drinking water at point-of-use." Water Supply 15, no. 1 (2014): 84–93. http://dx.doi.org/10.2166/ws.2014.088.

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Chlorine off-flavors of tap water have caused dissatisfaction and distrust from some consumers, placing pressure on operators concerning water disinfection. Evaluating practical approaches for eliminating chlorinous off-flavors by consumers at point-of-use while avoiding production of toxic byproducts is a practical concern. Three recognized dechlorination methods: ultraviolet (UV) irradiation, ascorbic acid (AA) and hydrogen peroxide (HP), were evaluated for chlorinated and chloraminated waters. AA is the most efficient for removing free chlorine and chloramine from water samples. Three new c
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Wati, Satiya, Bret S. Robinson, John Mieog, Judy Blackbeard, and Alexandra R. Keegan. "Chlorine inactivation of coxsackievirus B5 in recycled water destined for non-potable reuse." Journal of Water and Health 17, no. 1 (2018): 124–36. http://dx.doi.org/10.2166/wh.2018.393.

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Abstract Currently guidelines for disinfection of water with free chlorine, while primarily developed for potable water, are often used for virus disinfection of nitrified recycled water of >1 NTU (Nephelometric Turbidity Unit). More information is needed on the disinfection efficacy of free chlorine for viruses in waters of varying turbidity and pH due to significant reuse of treated wastewater of varying quality. In this study, disinfection efficacy in nitrified/denitrified activated sludge treated wastewater was investigated for coxsackievirus B5 (CB5), an enterovirus known to be hig
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Li, Jun Wen, Zuobin Yu, Xinpei Cai, Ming Gao, and Fuhuan Chao. "Trihalomethanes formation in water treated with chlorine dioxide." Water Research 30, no. 10 (1996): 2371–76. http://dx.doi.org/10.1016/0043-1354(96)00146-7.

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Tsai, Lee-Shin, Robert Wilson, and Virginia Randall. "Mutagenicity of Poultry Chiller Water Treated with either Chlorine Dioxide or Chlorine." Journal of Agricultural and Food Chemistry 45, no. 6 (1997): 2267–72. http://dx.doi.org/10.1021/jf960926j.

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Cope, Jennifer R., Amy M. Kahler, Jake Causey, et al. "Response and remediation actions following the detection of Naegleria fowleri in two treated drinking water distribution systems, Louisiana, 2013–2014." Journal of Water and Health 17, no. 5 (2019): 777–87. http://dx.doi.org/10.2166/wh.2019.239.

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Abstract Naegleria fowleri causes the usually fatal disease primary amebic meningoencephalitis (PAM), typically in people who have been swimming in warm, untreated freshwater. Recently, some cases in the United States were associated with exposure to treated drinking water. In 2013, a case of PAM was reported for the first time in association with the exposure to water from a US treated drinking water system colonized with culturable N. fowleri. This system and another were found to have multiple areas with undetectable disinfectant residual levels. In response, the water distribution systems
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Park, Jae Min, and Wontae Lee. "Effect of Oxidant Addition on Water Quality and Microfiltration Performance during Water Reclamation." Journal of Korean Society of Environmental Engineers 42, no. 4 (2020): 210–17. http://dx.doi.org/10.4491/ksee.2020.42.4.210.

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Objective:This study investigated the effects of ozone, chlorine dioxide, and chlorine pretreatment on water quality and microfiltration characteristics in the water reclamation facility.Methods:Ozone (0.5-2.5 mg/L), chlorine dioxide (1-5 mg/L) and chlorine (1-5 mg/L) were injected as an pre-oxidizing agent, and membrane fouling and surface damage during microfiltration (PVDF) were assessed. Results and Discussion:The hydrophobic substances were decomposed as the dosages of ozone and chlorine injected increased. However, chlorine dioxide could not effectively decompose hydrophobic organic matt
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Dissertations / Theses on the topic "Chlorine treated water"

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Kassouf, Helene. "Formation of Trihalomethanes (THMs) as Disinfection by-Products (DBPs) when Treated Municipal Wastewater is Disinfected with Sodium Hypochlorite." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6522.

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Disinfection is an essential process in the treatment of municipal wastewater before the treated wastewater can be discharged to the environment. Hillsborough County's Northwest Regional Water Reclamation Facility (NWRWRF) in Tampa, Florida, currently uses ultraviolet (UV) light for disinfection. However, this method has proven expensive to implement and maintain, and may not be effective if the light transmission is poor. For these reasons, Hillsborough County is considering switching from UV light to sodium hypochlorite for disinfection. However, hypochlorite (chlorine) disinfection has disa
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Adedapo, Remilekun. "Disinfection By-Product Formation in Drinking Water Treated with Chlorine Following UV Photolysis & UV/H2O2." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/919.

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ABSTRACT As far back as the early 1900?s when it was discovered that water could be a mode of transmitting diseases, chlorine was used to disinfect water. In the 1970?s, the formation of disinfection by-products (DBPs) from the reaction of chlorine with natural organic matter was discovered. Since then there have been various studies on alternative disinfectants that could inactivate microorganisms and at the same time form less or no disinfection by-products. More recently the ultraviolet (UV) irradiation has been used to both disinfect and remove organic contaminants in drinki
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Chiang, Yao-ching, and 蔣耀慶. "The microorganism control of raw water disinfected by chlorine in processes of water treatment and distribution systems of treated drinking water." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/65105741003380717725.

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碩士<br>國立中山大學<br>環境工程研究所<br>98<br>In the process of traditional water treatment, the humic acid and fulvic acid can be oxidized by chlorination; besides, it also produces small molecular organic compounds at the same time. Coagulation, flocculation, and sedimentation can reduce the concentration of the Assimilable Organic Carbon (AOC) significantly. An example of Ping-Ding water treatment plant was performed with sampling twelve times monthly from December 2008 to November 2009, the strong influence of chlorine, and coagulation, flocculation on the AOC can be observed. Comparing to the removal
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Books on the topic "Chlorine treated water"

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Wood, Delmer W. Determination of disinfectant residuals in chlorine dioxide treated water using flow injection analysis. 1990.

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Weinberg, Howard S., Katherine Brophy, Lin Liang, et al. Relative Dominance of Haloacetic Acids and Trihalomethanes in Treated Drinking Water. American Water Works Association, 2002.

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Neligan, Patrick J., and Clifford S. Deutschman. Management of metabolic acidosis in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0256.

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Metabolic acidosis (MA) commonly complicates critical illness, usually manifesting as a fall in arterial pH (&lt;7.4) accompanied by a concomitant fall in serum bicarbonate concentration. Acidosis caused by unmeasured anions (UMA), can be distinguished from Hyperchloraemic acidosis by demonstrating a widening of the anion gap (AG). AG should be corrected for albumin and lactate. The base deficit (BD) calculates degree of metabolic acidosis and represents the amount of strong cation required to restore the pH to 7.4. Neither the AG nor the BD specify the cause of acidosis, and are unhelpful in
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Book chapters on the topic "Chlorine treated water"

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Cho, Cho, Thinzar Aye, Aung Khaing, and Takaomi Kobayashi. "Comparative Study of Cellulose Hydrogel Films Prepared from Various Biomass Wastes." In Cellulose [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99215.

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The conversion of biomass waste products to valuable products like cellulose hydrogel films is important in cell regeneration. In this study, the various biomass wastes: thanaka heartwood (TH), sugarcane bagasse (SB) and rice straw (RS) were used as cellulose resources. They were chemically treated using acid and alkali to obtain cellulose fibers. The yield percent of cellulose fibers depends on the nature of biomass materials. Scanning Electron Microscope (SEM), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) analyses showed that the amount of lignin and hemicellulose from these samples were successfully reduced by chemical treatment. Cellulose fibers were treated using the dimethylacetamide/lithium chloride (DMAc/LiCl) system to obtain cellulose hydrogel solutions. Following this, the cellulose hydrogel films were prepared employing the phase inversion method without cross-linker. These films were transparent and flexible. In the present study, water retainable property and viscoelasticity of cellulose hydrogel films were measured. Antimicrobial activity tests of cellulose solutions have been carried out to be utilized to hydrogel films for biomedical application.
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Li, Jie Jack, Chris Limberakis, and Derek A. Pflum. "Functional Group Manipulations." In Modern Organic Synthesis in the Laboratory. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195187984.003.0008.

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CBr4–Ph3P is very straightforward and widely used. Workup and purification can be messy at times because of the by-product, Ph3PO. To a mixture of the alcohol (0.800 g, 3.36 mmol) and carbon tetrabromide (1.337 g, 4.03 mmol) in CH2Cl2 at 0 ºC was added a solution of PPh3 (1.319 g, 5.03 mmol) in CH2Cl2 (3 mL). The reaction mixture was stirred at room temperature for 1 h, concentrated under reduced pressure, and purified by column chromatography to afford the bromide (0.941 g, 93% yield). Reference: Hu, T.-S.; Yu, Q.; Wu, Y.-L.; Wu, Y. J. Org. Chem. 2001, 66, 853–861. A two-step sequence consisting of mesylate formation followed by treatment with LiBr can also be used. This procedure involves two steps, but workup and purification are very straightforward. The bromide can be carried out to the next step without further purification in many cases. To a solution of 5-hydroxymethyl-1-methylcyclopentene (3.8 g, 34 mmol) in CH2 Cl2 (50 mL) at 0 ºC was added triethylamine (5.2 mL, 37 mmol) followed by methanesulfonyl chloride (2.9 mL, 37 mmol). The mixture was stirred at 0 ºC for 5 h and then water was added. The organic layer was separated and the aqueous layer was extracted with ether. The combined organic extracts were dried over MgSO4 and the solvent was removed under reduced pressure to give 6.4 g (98%) of (2-methylcyclopent-2- enyl)methyl methanesulfonate, which was used in the next step without further purification. A solution containing the mesylate (6.4 g, 34 mmol) in acetone (70 mL) was treated with lithium bromide (8.89 g, 102 mmol). The mixture was heated at reflux for 6 h, cooled to room temperature, diluted with water, extracted with ether, and the combined ethereal extracts were dried over MgSO4. Removal of the solvent under reduced pressure gave 4.6 g (78%) of 5-bromomethyl-1-methylcyclopentene, which was used in the next step without further purification.
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Conference papers on the topic "Chlorine treated water"

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Kaishentayev, Damir, and Berna Hascakir. "Pretreatment of Produced Waters Containing High Total Dissolved Solids." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206371-ms.

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Abstract There are mainly two types of solids in the oil field waters; Suspended Solids (SS) and Total Dissolved Solids (TDS). While it is easy to remove SS from water, removal of TDS requires the application of advance filtration techniques such as reverse osmosis or ultra-filtration. Because these techniques cannot handle high volumes of the oilfield waters with high TDS content, produced waters originated from hydraulic fracturing activities cannot be treated by using these advance technologies. Thus, in this study we concentrated on the pretreatment of these waters. We investigated the fea
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Wang, Xiaolin, Wolfgang Zimmermann, Kim Choon Ng, Lizhen Gao, and Ju¨rgen U. Keller. "Experimental Investigations of the Adsorption of NH3 on Silica Gel-Based Adsorbent." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72232.

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The silica gel-water working pair has been commonly used for commercial adsorption chillers due to the environmental benign refrigerant and low desorption temperature (less than 85°C). However, the application has been constrained due to the vacuum working condition and Ice point. This motivates researchers to investigate alternative working pairs. The silica gel-based adsorbents - ammonia working pairs have been found to be the most promising alternative. The isotherms and heats of adsorption of the working pair are essential to be investigated for designing the adsorption reactor and predict
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Kupwade-Patil, K., T. J. John, B. Mathew, H. Cardenas, and H. Hegab. "Diffusion Analysis of Chloride in Concrete Following Electrokinetic Nanoparticle Treatment." In ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-31153.

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Concrete is a highly porous material which is susceptible to the migration of highly deleterious species such as chlorides and sulfates. Various external sources including sea salt spray, direct sea water wetting, deicing salts and brine tanks harbor chlorides that can enter reinforced concrete. Chlorides diffuse into the capillary pores of concrete and come into contact with the rebar. When chloride concentration at the rebar exceeds a threshold level it breaks down the passive layer of oxide, leading to chloride induced corrosion. Application of electrokinetics using positively charged nanop
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Sohawon, Haris, and Hans Beushausen. "The effect of hydrophobic impregnation on chloride ingress into cracked concrete." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1963.

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&lt;p&gt;Premature concrete degradation due to rebar corrosion has many financial and social implications on a large scale. Direct costs relate to the repair and rehabilitation of existing structures to maintain serviceability while indirect costs include loss in productivity and reduced economic growth. Hydrophobic (silane) impregnation represents a cost-effective way to increase the durability of concrete structures in cases where insufficient design cover quality and depth have been achieved. The water repellent product lines the internal capillary pore structure and provides a water-repell
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Yue, Shangchao, Lejun Zhao, Xiuduo Wang, Qishan Wang, and Fenghua He. "The haloacetic acids formation potential in treated waters exposed to ozone and chlorine." In 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018). Atlantis Press, 2018. http://dx.doi.org/10.2991/iceesd-18.2018.84.

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Vaudey, Claire-Emilie, Sébastien Renou, Dennis Kelley, Chantal Cochaud, and Roger Serrano. "Cadarache LOR (Liquides Organiques Radioactifs) Treatment by a Solidification Process Using NOCHAR Polymers." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96298.

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In France, two options can be considered to handle the Very Low Level Waste (VLLW) and the Low Level Waste (LLW). The first one is the incineration at CENTRACO facility and the second one is the disposal at ANDRA sites. The waste acceptance in these two channels is dependent upon the adequacy between the waste characteristics (physical chemistry and radiological) and the channel specifications. If the waste characteristics and the channel specifications (presence of significant quantities of halogens, complexants agents, organic components… or/and high activity limits) are incompatible, an alt
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Baraka-Lokmane, Salima, Christian Hurtevent, Honggang Zhou, et al. "TOTAL's Experience on the Development and Implementation of a Scale Management Strategy in Central Graben Fields." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169757-ms.

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Abstract In Central Graben, North Sea, there is generally no free water production, most of the produced water is condensed water; however wells have been treated against scale build up at perforation level by performing acid washes using mainly acetic acid. Wells reacted differently after acid treatment: Some wells showed a significant productivity improvement, others showed good results but limited in time, some wells presented no gain after acid treatment and some other wells are scaling on a more aggressive basis after acidification. This paper shows that these behaviours are linked with t
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Rajamani, Sengoda Gounder. "Innovative ecological processes with recovery of chemicals and water for reuse in leather sector - an economical and sustainable approach." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.iii.15.

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The effluent discharged from conventional process in textile dyeing and tanneries are unable to meet some of the discharge parameters such as Total Dissolved Solids (TDS) in the existing physiochemical &amp; biological treatment units. In addition to TDS management the control of volatile solids in hazardous category sludge is also becoming a necessity. To overcome these challenges faced by tanneries in the world leather, improved cleaner production, segregation of saline soak liquor and separate treatment, modified chrome recovery system and recovery of chromium &amp; sodium chloride salt in
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Werkelin, Johan, Maria Zevenhoven, Bengt-Johan Skrifvars, and Mikko Hupa. "Chemical Forms of Ash-Forming Matter in Woody Fuels for FBC." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78128.

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The prediction of the ash behavior in combustion processes is enhanced by the determination of the ash-forming matter in the fuel. The scope of this work was to characterize Scandinavian wood fuels by studying the wood, bark and leaves from a spruce and an aspen. Chemical Fractionation, a step-wise leaching procedure that treat the fuel in water, ammonium acetate and hydrochloric acid, was used to determine the solubility of the ash elements. The resulting solutions were further analyzed on ionic species, which was coupled to the presence of salt compounds in the original biomass tissues. The
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Tota-Maharaj, Kiran. "Evaluating the Performance of Low-Energy Feed Forward Osmosis System for Desalination using Impaired and Saline Water Sources." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.091.

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Forward Osmosis (FO) is a natural process of treating water or wastewater due to the difference in osmotic pres-sures. FO is a membrane separation technology, applicable to food processing, industrial wastewater treatment and seawater or brackish water desalination. The phenomena of FO processes occur whereby water molecules are driven across a semi-permeable membrane by an osmotic pressure gradient that is generated from a higher concentrate draw solution. FO processes can recover potable water resources from wastewater streams through the flow of pure water from a lower concentrated feed sol
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