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Coagulation performance was evaluated by jar test on printing and dyeing wastewater and landscape water treatment, and the optimum conditions for the two tested water samples were investigated to be coagulant dosage of 70 and 210 mg/L, pH value of 8.0 and 9.0, and settling time of 15 and 20 min.
Get Price2020-6-29 · The turbidity and color removal rates could reach 97.79% and 98.07% at PSAS-CS dosage of 1.5 mL/L and the simulated water pH of 5–9. Furthermore, the flocculation efficiency of PSAS-CS was compared with PSAS, CS and the starch modified polyaluminum silicate at different dosage.
Get Price2016-2-11 · Considering the inferior coagulation performance and relatively higher residual iron at a Ti/Fe molar ratio of 1:5 and 1:6, the result was assigned to the strong hydrolysis of titanium ion. Excess H + lowered the pH of water sample, which had a negative effect on the coagulation performance. As a consequence, the Ti/Fe molar ratio between 1:9 and 1:7 was beneficial to the coagulation performance …
Get Price2020-4-1 · Poly(vinyl chloride) material (PVC) has been applied as a favorable polymer for fabrication of polymeric membranes filtration processes because of its cheapness (the PVC polymer price is only 10% of the price of polysulfone (PSF) or polyvinylidene fluoride (PVDF) polymers) and excellent physicochemical attributes (Xu and Xu, 2002; Zhang et al., 2009; Mei et al., 2011).
Get Price2002-6-15 · An ideal strategy for the surface modification of polymer membranes would have the following attributes: (1) a high degree of surface coverage with good long-term stability; (2) high membrane permeability; (3) coverage of the internal pore channels as well as the separation surface; (4) low materials and processing costs; (5) minimal impact on bulk membrane properties; and (6) …
Get Price2015-5-1 · In addition, an efficient method for the synthesis of SRNF TFC membranes consisting of PA top-layers on PI supports was developed. Phase inversion, crosslinking and monomer impregnation of the PI support were combined by adding amines to the aqueous coagulation bath of the support [20 •]. This promising method minimizes the use of materials and makes the SRNF TFC synthesis process …
Get Price2020-6-1 · In raw water treatment, PAC coagulants are very effective in the low and high turbidity water, which results in the rapid and better floc formation. Poly inorganic salts are used as a coagulant to remove the suspended solids from raw water for the treatment of potable water (Abo-El-Enein et al., 2009, Abo-El-Enein et al., 2011). It also helps in the removal of some metal impurities (e.g. Fe, Mn) …
Get Price2021-4-15 · The influence of low temperature on coagulation effects mainly included the following points: (1) Hydrolysis of inorganic salt coagulants is an endothermic reaction, thereby hydrolysis is difficult at a low temperature, especially for aluminum sulfate (He et al., 2011). (2) The lower the temperature, the higher the viscosity of water.
Get Price2019: 4.166. To calculate the five year Impact Factor, citations are counted in 2019 to the previous five years and divided by the source items published in the previous five years. Journal Citation Reports (Clarivate Analytics, 2020) Source Normalized Impact per Paper (SNIP): 1.068 ℹ.
Get Price2018-2-21 · In this paper, we report a novel composite of poly(AA-co-AM)/montmorillonite (MMT), which is used as an adsorbent for the removal of cationic dye MB (molecular structure is shown in Scheme 1a) in aqueous solutions. The composites were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), energy dispersive X-ray (EDX), and X-ray diffraction …
Get Price2021-4-13 · The electrochemical synthesis of hydrogen peroxide (H 2 O 2) using the oxygen reduction reaction (ORR) requires highly catalytic active, selective, and stable electrode materials to realize a green and efficient process.The present publication shows for the first time the application of a facile one-step bottom-up wet-spinning approach for the continuous fabrication of stable and flexible ...
Get Price2021-2-14 · composite AEMs will contain a trimethylamine group responsible for higher permeability of anions, leading to higher acid recovery efficiency of the prepared composite AEMs. Previously, we reported the synthesis of polymeric AEMs by introducing different ion-exchange groups into the polymeric material for adsorption [37], diffusion dialysis [26 ...
Get Price2015-3-22 · Cationic polymer, hydroxy aluminum, and clay minerals are three flocculants with different action mechanisms and a more cost-efficient multiple flocculant can be prepared by compositing them through appropriate technology. All of attapulgite (ATP), clay minerals containing magnesium, aluminum, and silicate, are porous environmental mineral material with good absorbability and have found wide ...
Get Price2020-9-28 · IMPROVED PORPERTIES OF POLY(LACTIC ACID) WITH INCORPORATION OF CARBON HYBRID NANOSTRUCTURE Junseok Kim ABSTRACT Poly(lactic acid) is biodegradable polymer derived from renewable resources and non-toxic, which has become most interested polymer to substitute petroleum-based polymer. However, it has low glass
Get PriceHaze of films was analyzed by haze meter. Haze of 10/15 μm film was decreased from 7 to 4.4, while that of 20/15 μm film was also decreased from 10 to 7.9 when AF appeared on its surface. Both films can be a peelable PLA based lidding film product with low haze (< 10 %) and antifog performance (within 1 month).
Get Price2019-8-6 · The present paper is focused on the synthesis and optimization of a green PVA-co-poly(MAA) adsorbent by free radical polymerization using N,N′-methylene-bis-acrylamide and potassium persulphate as a cross-linker–initiator system. The surface morphology and structural properties were studied by the techniques such as FTIR, FESEM and XRD. The synthesized adsorbent was found to possess the ...
Get Price2020-10-20 · Thus, developing novel preparation route for high-performance Li 2 S is very important. An ideal Li 2 S cathode material should be small in particle diameter for the effective reduction of the charging barrier, and in the meanwhile, the cost must be low to obtain a competitive advantage over existing cathode materials, as shown in Figure 1b.Scientists have conducted extensive research on …
Get PriceThis review describes various techniques for synthesis of a wide variety of biogenic, synthetic, composite and modified forms of Hap for application in water defluoridation.
Get Price2018-2-21 · Preparation of poly(AA-co-AM)/MMT composite adsorbent. In this paper, a series of poly(AA-co-AM)/MMT composite was prepared by radical polymerization. The specific preparation method was as follows. First, 8 g of AA and 20 mL of distilled water were placed in a 100-mL beaker with mechanical stirring at room temperature.
Get Price2018-9-25 · Europe has over 175 companies and organizations involved in ... Talc-filled polypropylene composite has low specific gravity and combines excellent chemical resistance with low cost (Zihlif & Ragosta, 2003; ... Polymer nanocomposite synthesis The synthesis of polymer nanocomposites is an integral aspect of polymer nanotechnology. By inserting ...
Get Price2012-12-17 · polyester resin comes from their low cost and easy processing. Due to their stable structure, they display good mechanical properties and furthermore, unsaturated polyester resin has good thermal stability. However, the use of these materials is limited due to their poor fire performance. There are some solutions [63]. Survey of literature
Get PriceBetter performance in cold water. And because PAC does function so differently, there are many applications where it will provide finished water quality that the traditional coagulants can't achieve. GEO understands the relationships between basicity, alumina content and the way a PAC will perform.
Get Price2019-4-18 · neutralizing electric, the price is high, it is difficult to biodegradation exist the possibility of secondary pollution. In view of the merits and demerits of the two kinds of flocculants and complementarity on the performance and cost of the both, the research of inorganic-organic composite flocculants gradually becomes a hot spot.
Get Price2021-2-22 · Production of kenaf fiber reinforced poly-ethylene composite for ballistic protection. IJSER, 6(8), 1–7). It is reported that the ballistic panel vest of kenaf/HDPE depicts the ballistic/penetration resistance with three different shots of calibers, which is shown in Table 9. Alkaline mercerization treatment of kenaf natural fibers resulted ...
Get Price2021-2-14 · Membranes 2021, 11, 133 3 of 17 for acid recovery application according to the best of our knowledge. The low acidity of trimethylamine (PKa = 9.81) permits the higher permeability of anions because they are dis- sociated from the functional groups [18,36].
Get Price2016-9-30 · Europe PMC is an archive of life sciences journal literature. The fluorinated polyacrylate latex were successfully prepared with semi- continuous seeded emulsion polymerization of butyl acrylate (BA), methyl methacrylate (MMA) and hexafluorobutyl methacrylate (HFMA) which was initiated with potassium persulfate (KPS) initiator and emulsified with the novel mixed surfactants of sodium lauryl ...
Get PriceChina National Knowledge Infrastructure --- Download Paper. Science-Engineering (A) Recent Updated Papers. • A study on the cause of weathering for ancient sandstone carvings in Sichuan. • An investigation of the disease of the Hongqingsi Grottoes and an elementary research for the prevention.
Get PriceEuropean Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties.
Get PriceThe composite precursors consisted of CaHP0 4 ·2H 2 0, Ca 4 (P0 4) 2 0, and poly[bis(sodium carboxylatophenoxy)phosphazene]. The results indicate that a synergistic relationship exists in the formation of a polyphosphazene network and hydroxyapatite (HAp) matrix phase during composite synthesis.
Get Price2021-7-5 · Poly aluminum ferric chloride-Product-Lvyuan chemical. Poly aluminum ferric chloride (PAFC) is a kind of new type of high efficient coagulant CHEMICAL SERVICE COMPANY VISION Be the world's preeminent producer of water treatment agent. MISSION Assure our clients the most reliable source and the . Get Price
Get PriceTo solve the problem of the price of PLA, it is necessary to start with the production of raw materials by improving the production efficiency of lactic acid and obtaining high-quality lactic acid at low cost. A further improvement in the production process of lactic acid is required due to the low-cost materials and high-performance ...
Get Price2020-9-28 · IMPROVED PORPERTIES OF POLY(LACTIC ACID) WITH INCORPORATION OF CARBON HYBRID NANOSTRUCTURE Junseok Kim ABSTRACT Poly(lactic acid) is biodegradable polymer derived from renewable resources and non-toxic, which has become most interested polymer to substitute petroleum-based polymer. However, it has low glass
Get Price2012-12-17 · polyester resin comes from their low cost and easy processing. Due to their stable structure, they display good mechanical properties and furthermore, unsaturated polyester resin has good thermal stability. However, the use of these materials is limited due to their poor fire performance. There are some solutions [63]. Survey of literature
Get Price2021-2-14 · composite AEMs will contain a trimethylamine group responsible for higher permeability of anions, leading to higher acid recovery efficiency of the prepared composite AEMs. Previously, we reported the synthesis of polymeric AEMs by introducing different ion-exchange groups into the polymeric material for adsorption [37], diffusion dialysis [26 ...
Get PriceThe purpose of this work is to remove Pb(II) from the aqueous solution using a type of hydrogel composite. A hydrogel composite consisting of waste linear low density polyethylene, acrylic acid, starch, and organo-montmorillonite was prepared through
Get Price2020-10-20 · Thus, developing novel preparation route for high-performance Li 2 S is very important. An ideal Li 2 S cathode material should be small in particle diameter for the effective reduction of the charging barrier, and in the meanwhile, the cost must be low to obtain a competitive advantage over existing cathode materials, as shown in Figure 1b.Scientists have conducted extensive research on …
Get Price2021-7-6 · Title:Facile Synthesis of Cu2O nanoparticle-loaded Carbon Nanotubes Composite Catalysts for Reduction of 4-Nitrophenol VOLUME: 16 ISSUE: 4 Author(s):Yao Feng, Ran Wang, Juanjuan Yin, Fangke Zhan, Kaiyue Chen, Tifeng Jiao*, Jingxin Zhou, Lexin Zhang and Qiuming Peng Affiliation:Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Heavy Metal Deep-Remediation in …
Get Price2021-1-26 · The price of advanced conductors is currently higher than that of conventional metal conductors; therefore, their performance should be considerably better to justify their use. Even with an expensive price tag, advance conductors have found a niche in aerospace and defense applications.
Get PriceThe report provides detailed insight into the performance of the top five companies in the world. The analysis highlights the companies that are performing the best among the peer group, and in which areas, and therefore clarifies leading performance standards and the strengths and weaknesses of …
Get Price2021-3-11 · In this study, the authors found that the low surface area of composite compared to single bentonite caused less removal of Hg 0 . Also, a composite, synthesized from acid-activated bentonite and natural palygorskite via polymerization reaction between N,N’ -methylenebisacrylamide and acrylic acid, was used for the adsorption of ammonia [ 92 ].
Get PriceProgress in polymers and polymer composites used as efficient materials for EMI shielding J. Kruželák, A. Kvasničáková, K. Hložeková and I. Hudec, Nanoscale Adv., 2021, 3, 123 DOI: 10.1039/D0NA00760A This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from ...
Get PriceBenefits for applicants. 24 months fellowship at the UCT Prague (MSCA-IF concept) full-time contract for two years with possibility of extension. monthly salary of 3000 EUR + consumables. support of excellent mentors & professional administration. possibility to establish own independent research group.
Get PriceMeanwhile, the tensile strength and breaking elongation are 44 MPa and 8.1%, respectively. According to detailed characterization results, SWCNT with low filling are uniformly dispersed and show a certain orientation in PVDF-HFP after surface modification, which is the key to improve the composite performance.
Get Price2021-2-22 · Production of kenaf fiber reinforced poly-ethylene composite for ballistic protection. IJSER, 6(8), 1–7). It is reported that the ballistic panel vest of kenaf/HDPE depicts the ballistic/penetration resistance with three different shots of calibers, which is shown in Table 9. Alkaline mercerization treatment of kenaf natural fibers resulted ...
Get PriceEuropean Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties.
Get PriceINTRODUCTION. Poly(vinylidene fluorine) (PVDF) is a semi-crystalline polymer. The main macromolecular straight chain of PVDF is surrounded by fluorine and hydrogen atoms (–CH 2-CF 2 –). Its crystalline structure and spatial arrangement of CH 2 and CF 2 groups along the polymer chain result in excellent mechanical stability (Lui et al., 2011b).The high electronegativity of fluorine atoms ...
Get PriceMore than 96.9% of the COD removal was achieved under optimal conditions, with a post-oxidation coagulation stage accounting for about 30% of the removal, thus confirming the collaborative role of oxidation and coagulation in the overall treatment. A low-velocity gradient of 8.0 s−1 for a short mixing time of 10 min resulted in optimum post ...
Get PriceDevices and applications at the micro- and nanoscale. Yolk–shell NiS 2 /CuS hollow microspheres as an extraordinary kinetically pseudocapacitive nanoreactor for sodium-ion batteries manifest superb Na +-storage capability, including an ultrahigh ICE of 94.0%, remarkable specific capacity of 410.9 mA h g −1 after 750 cycles at 2.0 A g −1, excellent rate capability, and prolonged ...
Get Price2021-3-11 · In this study, the authors found that the low surface area of composite compared to single bentonite caused less removal of Hg 0 . Also, a composite, synthesized from acid-activated bentonite and natural palygorskite via polymerization reaction between N,N’ -methylenebisacrylamide and acrylic acid, was used for the adsorption of ammonia [ 92 ].
Get PriceBetter performance in cold water. And because PAC does function so differently, there are many applications where it will provide finished water quality that the traditional coagulants can't achieve. GEO understands the relationships between basicity, alumina content and the way a PAC will perform.
Get Price2013-3-22 · where p c is the percolation threshold, p is the filler content, and t is the critical exponent. As shown in Table 1, the fit of electrical conductivity to Equation 1 yields a percolation threshold as low as 0.31 vol.% (Figure 3).Such a percolation threshold is lower than that of the graphene/PVDF composite prepared by direct blending chemically/thermally reduced GO sheets with polymers [34, 35].
Get PriceBenefits for applicants. 24 months fellowship at the UCT Prague (MSCA-IF concept) full-time contract for two years with possibility of extension. monthly salary of 3000 EUR + consumables. support of excellent mentors & professional administration. possibility to establish own independent research group.
Get PriceEuropean Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties.
Get Price2018-4-1 · De Vries sees PEKK as more amenable for AFP, “because the process window is wider. You have to be at 385-390°C for PEEK — so processing at 360°C is not ideal. However, with PEKK, processing is quite good even at 355°C. So not only is your lower boundary lower, but you get just a little more time before the material sets so the total time ...
Get Price2021-6-14 · Title:Synthesis Procedure and Industrial Applications of NaY Zeolite for Various Processes: A Review VOLUME: 17 ISSUE: 7 Author(s):Mahjoobeh Hajitabar Firouzjaee and Majid Taghizadeh* Affiliation:Chemical Engineering Department, Babol Noshirvani University of Technology, P.O. Box 484, 4714871167 Babol, Chemical Engineering Department, Babol Noshirvani University of Technology, …
Get PriceDevices and applications at the micro- and nanoscale. Yolk–shell NiS 2 /CuS hollow microspheres as an extraordinary kinetically pseudocapacitive nanoreactor for sodium-ion batteries manifest superb Na +-storage capability, including an ultrahigh ICE of 94.0%, remarkable specific capacity of 410.9 mA h g −1 after 750 cycles at 2.0 A g −1, excellent rate capability, and prolonged ...
Get Price2019-5-24 · Sonochemistry, or the application of power ultrasound to chemical processes, is a technology that has undergone very intensive research and development in the last 15−20 years, with respect to both its range of application and the methods employed for its implementation at industrial manufacturing scales. In a series of two papers, the authors review progress of the application of …
Get PriceMeanwhile, the tensile strength and breaking elongation are 44 MPa and 8.1%, respectively. According to detailed characterization results, SWCNT with low filling are uniformly dispersed and show a certain orientation in PVDF-HFP after surface modification, which is the key to improve the composite performance.
Get Price2021-6-15 · Synthesis of silica using the sol-gel process utilizes the reaction of silicon alkoxides as a precursor with water or ethanol as a solvent. The reaction takes place in the presence of a suitable catalyst with acidic or basic conditions. The simplest and most commonly used silica precursors are tetramethoxysilane (TMOS) and TEOS.
Get PriceTypical applications of high-performance fibers are composite reinforcement, ropes and cables, and antiballistic clothing. As a group, these fibers represent successful technical developments, but they have proved less commercially attractive than once believed for a variety of reasons. The spinning process can be described as follows.
Get PriceThe report provides detailed insight into the performance of the top five companies in the world. The analysis highlights the companies that are performing the best among the peer group, and in which areas, and therefore clarifies leading performance standards and the strengths and weaknesses of …
Get Price2018-5-4 · Membrane fouling has been recognized as a serious barrier in microfiltration and ultrafiltration of secondary effluent. Feed pre-treatment is a frequent use for fouling extenuation. Numerous techniques have been employed to monitor membrane fouling. These include: Pre-treatment of the feedwater, modification of membrane properties, optimization of module configuration and operating conditions ...
Get Price2018-4-1 · De Vries sees PEKK as more amenable for AFP, “because the process window is wider. You have to be at 385-390°C for PEEK — so processing at 360°C is not ideal. However, with PEKK, processing is quite good even at 355°C. So not only is your lower boundary lower, but you get just a little more time before the material sets so the total time ...
Get Price2019-5-26 · Since ancient times, human being has tried to find a way for cleaning clothes, house floor, agricultural tools and so on. In the present work, we briefly describe the history of detergents and the way that they developed. In addition we write about the components of powdered and liquid detergents and the components we produce and use in our detergents.
Get PriceThe isocyanate is commonly referred to in North America as the 'A-side' or just the 'iso'. The blend of polyols and other additives is commonly referred to as the 'B-side' or as the 'poly'. This mixture might also be called a 'resin' or 'resin blend'. In Europe the meanings for 'A-side' and 'B-side' are reversed.
Get PricePerformance—Performance barriers are mostly related to reduced discharge power at low temperature and loss of power due to use and aging. Safety—Actual lithium-ion battery technology is not intrinsically safe. Short circuit, overcharge, over-discharge, crush, and high temperature can lead to thermal runaway, fire, and explosion.
Get Price2021-7-9 · Asia-Pacific has been the dominant polyamide market in 2016 with increased usage in various end segment markets. China was the leading consumer for both domestically produced and imported primary form of polyamide in the global market importing worth US 542.1mn followed by Germany with the worth of US 390.3.
Get Price2018-12-24 · Preface. The 5 th International Conference on Process Engineering and Advanced Materials (ICPEAM 2018) is biannual event organized by Chemical Engineering Department of Universiti Teknologi PETRONAS, under the banner of World Engineering, Science & Technology Congress (ESTCON 2018) that was successfully held in Kuala Lumpur, Malaysia in August 13-14, 2018.
Get Price2018-9-25 · Europe has over 175 companies and organizations involved in ... Talc-filled polypropylene composite has low specific gravity and combines excellent chemical resistance with low cost (Zihlif & Ragosta, 2003; ... Polymer nanocomposite synthesis The synthesis of polymer nanocomposites is an integral aspect of polymer nanotechnology. By inserting ...
Get Price2018-4-13 · Villi-structured polyaniline sheets (VPASs) were synthesized by the organic single-crystal surface-induced polymerization (OCSP) method using sodium decanesulfonate as a template. Aniline hydrochloride is used as a monomer instead of aniline to improve the electrostatic interaction between monomers and hydrated crystals, which reveals that the mechanism of OCSP occurs from the …
Get PriceHollow particle is a promising material with the special properties of low densities, thermal insulation and distinct optical activity. Due to their potential promising applications in the fields of drug delivery, catalysis and optics, a great effort has been devoted to develop new preparation methods which are collected and reviewed in this paper.
Get Price2006-11-16 · Carbon nanotube salts prepared by treating single-wall carbon nanotubes (SWNTs) with lithium in liquid ammonia react with ω-bromocarboxylic acids to yield sidewall-derivatized SWNTs. These can be reacted with amine-terminated polyethyleneglycol (PEG) chains (e.g., H2N−mPEG−OMe, MW = 5000 Da) to yield water-soluble PEGylated SWNTs. Short nanotubes (average length ∼ 60 nm) …
Get Price2020-2-5 · Using natural carbon resources, for low cost and ecofriendly synthesis of CDs, is becoming one of the trends of CDs research. Particularly, petroleum coke, which is produced in hundreds of tons as a byproduct during the oil refining process in many oil states (Additional file 1: Tables S1, S2), has a relatively low price . Thus, one can take ...
Get Price2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and …
Get Price2006-8-14 · Molecules in the reaction mixture, temperature and reaction time control the crystal growth. The advantage of this procedure is the total surface control during every stage of the particle growth. Disadvantage is mostly price and scalability of the process. Mostly liquid phase synthesis leads to a dispersion of Nanoparticles.
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