Tìm thấy 10+ kết quả cho từ khóa "Water purification"
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The Desalination and Water Purification Technology Roadmap (Roadmap), developed by the Bureau of Reclamation and Sandia National Laboratories, has identified desalination and water purification technologies as one component of the solution to the nation’s future water needs.
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The Roadmap’s focus is to present “broad research areas that are representative of the types of scientific and technical advances that will be necessary for desalination and water purification technologies to find wide acceptance” (USBR and SNL, 2003). Section 5.0 of the Roadmap, entitled “Next Steps,” positions the Roadmap at the upper end of a continuum of parallel activities to build additional water supplies through desalination and membrane-based water purification (Figure 4-1).
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Unbaked materials made from WS of the Thu Duc wa- ter purification plant, Vinh Tan fly ash, and the WG are introduced in this research.. The solution of the sodium silicate in water is called water glass or liquid glass. This is an open- access article distributed under the terms of the Creative Commons Attribution 4.0 International license.. The bonding and microstructure of the ma- terials had to be studied by Fourier infrared spec- troscopy (FTIR) and scanning electron microscope (SEM)..
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Xu et al. for water samples with lower than with higher bacteria concentrations, possibly due to the competitive ad- sorption of suspended solids and other organic compounds present in the water. Huang et al. The final application of this technology consists in the use of MNPs in a water outlet point where the contact time between the two phases is minimal.. One of the samples was subsequently coated with carbon..
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It is important to note that the starting source-water qualities and the product-water quality objectives for desalination are different from those of water purification by reuse/recycling, and these distinctions should receive greater emphasis in the Roadmap.. However, the Roadmap’s presentation of reuse and recycling technology needs would be improved if membrane performance was discussed in the context of various impaired source-water and product-water qualities.
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Locating the water purifi- cation system immediately above a sink, so that any vessel being filled can be placed in the sink, usually prevents this type of cata- strophe. If placement above a sink is not possible, locating the water purification system in a (relatively) high-traffic or well-used location in the lab can also minimize or eliminate the possibility of major spills, since someone is likely to notice a spill or leak..
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It is clear that acid chlorides as acylating agent are not preferred for this reaction because of problems due to their sensitivity to water purification, low yield of the acylation reaction when using them, and problems in providing a low- temperature acylation reaction. synthesis has several advantages over the acid chloride method: easy handling, very mild reaction conditions, high yield, no need for further purification of the acylating agent (thioester), and ambient temperature for the reaction
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In the late 1800‘s Ellen Richards, began work in the new field of ―sanitary science‖ which was concerned with waste removal, water purification and. red clover, high in protein content, is an extremely important leguminous hay and pasture plant of the eastern United States.. (A) like that of the Earth (B) the Earth‘s like that of (C) like the Earth of that (D) that of the Earth‘s like. Noise, in the technical sense, implies a random chaotic disturbance.
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In addition to naturally-occurring wetlands, humans are creating artificial ones for a number of purposes related to water management.(adsbygoogle=window.adsbygoogle||[]).push({})One of the main benefits of wetlands is that they can prevent floods. In cases of extremely heavy rainfall, wetlands can fill up and any additional water will start to run off.Wetlands can also play a part in water purification.
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A better understanding of the effect of operational parameters on the rate of metal uptake by the adsorbent is of primary importance for the successful development of adsorption-based water purification systems. In addition, it provides a method to understand the kinetics of the sorption process.
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Then 75 mL of bovine liver homogenate was used to perform purification of GR and the homogenate activity was measured from this homogenate after it was obtained.. The gel was washed with 400 mL of bidistilled water to remove foreign bodies and air, suspended in balancing buffer (50 mM K-phosphate/1 mM EDTA, 1 mM DTT, pH 7.3), and packed in the column (1 × 10 cm). All of the procedures were performed at 4 ◦ C..
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DNA was then purified by 11 different purification reagents following the manufacturer’s instructions except for the final elution volume (16 μl). The ChIP DNA Clean &. 1 DNA purification reagents vary in their ability to recover low amounts of DNA from de-crosslinked chromatin. a Recovered DNA amount by different DNA purification reagents from de-crosslinked chromatin. Zy, ChIP DNA Clean &. b Interference of PCR amplification by purified eluent of purification reagents..
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Hence the toluene:ethyl acetate ratios of 9:1 and 4:1 could be the most suitable solvent ratio for purification of Pg from S. marcescens M10 culture extract using silica gel column chromatography.. Purification of Pg by silica gel column. and balanced with toluene:ethyl acetate (9:1) solvent system. 0.2 g crude Pg was dissolved in 2 - 3 mL of toluene:ethyl acetate (9:1) solvent, loaded onto the column and fractions were eluted by ethyl acetate:toluene solvent at a flow rate of 25 mL/hour.
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Purification and characterization of recombinant Bacillus stearothermophilus subtilisin. Purification and characterization of a fibrinolytic enzyme produced from Bacillus sp. Biochemical characterization of a thrombin like enzyme and a fibrinolytic serine protease from snake (Agkistrodon saxatilis) venom. Purification and characterization of a thermostable alkaline protease from alkalophilic Bacillus pumilus. Clevage of structure proteins during the assembly of the head of bacteriophage T4.
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There are similar studies involving purification of PON3 enzyme in the literature. We did not encounter any study regarding this technique for PON1 purification in the literature. Thus, we purified the rhPON1 from the inclusion bodies by a single step procedure that is simple and efficient. After purification 0.045 mg/mL protein in soluble fraction and 0.108 mg/mL protein from inclusion bodies were obtained.
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Camacho NA, Aguilar OG (2003) Production, purification, and characterization of a low- molecular-mass xylanase from Aspergillus sp. Do TT, Quyen DT (2010) Purification and properties of a thermoactive xylanase from Aspergillus oryzae DSM1863. Middle-East J Sci Res Do TT, Quyen DT, Dam TH (2012 ) Purification and characterization of an acid- stable and organic solvent-tolerant xylanase from Aspergillus awamori VTCC-F312.
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These novel cyclotriphosphazene compounds had solubility in water and good solubility in water-miscible solvents.. Purification of the compounds was carried out on silica gel-filled columns with defined eluents. 2-Azido-1-ethanol [35], BODIPY 3 [36], and trimeric compound 1 (P 3 N 3 -(O-CH 2 -CH 2 -O-CH 2 -CH 2 -O- CH 3 ) 5 Cl) [37] were prepared and purified according to the literature procedures.. Synthesis of compound 2. NaH (46 mg, 3 mmol) in 20 mL of THF was added to the flask slowly..
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Table.1 Purification of DBW-17 wheat variety Purification. Table.2 Purification of HD-2894 wheat variety Purification. Table.3 Purification of HUW-234 wheat variety Purification. Fig.1 Protein profile of selected four wheat varieties. Lane 2 – Protein extract from DBW-17. Lane 3 - Protein extract from HD-2894. Lane 4 - Protein extract from HUW 234. Lane 5 – Protein extract from LOK 1}. Fig.2 SDS-PAGE of selected four wheat varieties.
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In the following section the concept of the pilot surface water treatment plant (PSWTP) is described.. An overview of the applied purification process of the surface water is given in the Fig. Project: Treatment Plant Hoa Anh, Vietnam. A list of all components of the PSWTP is given with their labelling and technical specifications in Tab. 2 of the ap- pendix. A plain view of the PSWTP is shown in Fig. The pressure of raw water is increased by pump P-1a(I) situated inside the treatment plant..
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Key words: Thermophilic, esterase, Geobacillus sp., purification, pH stability. 2,3 Although esterases are responsible for hydrolysis reactions in the presence of water, they also catalyze several types of biotransformations in anhydrous solvents.