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2015-9-7 · The synthesis of coagulants took place at room temperature by the application of two polymerization methods, according to a modified procedure proposed by Gao et al. [7], although with certain modifications, i.e. by applying the co-polymerization or the composite polymerization techniques both in different mixing order
Get PriceSynthesis and coagulation performance of composite poly-aluminum-ferric-silicate-chloride coagulants in water and wastewater. AbstractThe aim of this work was to study the combination of an inorganic pre-polymerized coagulant (polyaluminum chloride [PACl]) with ferric species and polysilicic acid in various mixing orders Al/Fe/Si and OH/Al molar ...
Get Price2012-8-21 · Coagulation experiments reveal that the PFS–CP composite reagent exhibits a superior coagulation performance, when compared to conventional coagulants. PDA analysis shows that the improvement of kinetic parameters with increasing CP/Fe ratio (especially in comparison with PFS) is attributed to the nature and properties of the cationic polymer.
Get PricePreparation, characterization and coagulation performance of a composite coagulant formed by the combination of polyferric sulfate (PFS) and Ce3+ Mei Liu , P. Zhu , …
Get Price2020-4-28 · Application of Composite Pre-Polymerized Coagulants for the Treatment of High-Strength Industrial Wastewaters Athanasia K. Tolkou and Anastasios I. Zouboulis * Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece; [email protected]
Get Price2011-6-1 · A poly-acrylamide co-polymer (Magnafloc LT-25, Ciba SC LTD, commercially available) was obtained and used as the organic additive for the synthesis of composite coagulants. The specific polyelectrolyte is commonly used as a flocculant aid in water …
Get Price2012-1-11 · Synthesis conditions are optimized by changing some factors to obtain sorbent with the controllable adsorption capacity, selectivity, hardness and toughness. Binding study demonstrated that the imprinted hybrid composites showed excellent affinity and high selectivity to oxytetracycline.
Get Price2018-6-22 · A novel inorganic–organic composite flocculant CTS-PFCS was successfully synthesized by the combination of chitosan and homemade PFCS. The potential use of chitosan as an organic additive for modifying inorganic polymers flocculant in the clarification of wastewater was demonstrated. © 2018 Society of Chemical Industry
Get Price2009-9-25 · The polymer flocculation efficiency was compared with that of polyaluminum chloride (PAC) and a composite flocculant based on polyaluminum chloride-epichlorohydrin-dimethylamine polyamine. The results showed that epichlorohydrin-dimethylamine polymer was effective over a pH range of 2-10 for the reactive and disperse dye removal (Reactive Brilliant Red and Disperse Yellow dyes).
Get PriceThe most effective coagulant obtained was also used for the treatment of tannery wastewater to evaluate their performance and it was observed that high turbidity removal was obtained at …
Get Price2020-4-28 · Al (III), Fe (III), and poly-silicic acid solution (pSi), whereas the coagulation e ciency of produced composite poly-aluminum–ferric–silicate–chloride is mainly a ected by the Al/Fe/Si ratio and the respective preparation (i.e., inorganic polymerization) techniques.
Get Price2012-8-21 · Coagulation experiments in low and high turbid model suspensions reveal that the PFS–CP reagents exhibit a superior coagulation performance, as compared to PFS + CP mixture, as well as to PFS and/or CP. The improved coagulation efficiency is due to the various interactive effects that occur within the composition of the composite coagulants.
Get PriceCoagulation performance results showed that the PATC-PDMDAAC had an organic and inorganic ratio of 0.15 and exhibited excellent removal efficiency at pH 9.0, dosage of 1.80 mg/L, sedimentation time of 40 min, and a stirring speed of 110 r/min. The optimal treatment efficiency reduced the turbidity to 0.56 NTU (Nephelometric Turbidity Unit).
Get Price156 International Journal of Environmental Engineering– IJEE Volume 2: Issue 2 [ISSN: 2374-1724] Publication Date: 30 October, 2015 is assigned to the asymmetric Si–O stretching vibrations of ...
Get Price2009-8-1 · Currently, research is focused on the synthesis of new composite coagulants, which are constituted of both inorganic and organic materials. In this paper, the development of relevant reagents was investigated, by combining the inorganic pre-polymerised iron-based coagulant Polyferric Sulphate (PFS) with an organic, non-ionic polymer (Polyacrylamide, PAA) under different PAA/Fe (mg/l) and …
Get Price2021-4-15 · Removing oil from wastewater through coagulation is a physical and chemical method, including aggregation and flocculation two processes (Wen et al., 2018).The oil removal process is shown in Fig. 2.First of all, the coagulants can neutralize negative charges of oil particles and reduce the electrostatic repulsion of the electric double-layer.
Get PriceAbstract Inorganic/organic composite coagulants have received wide attention in recent years due to their outstanding properties in wastewater treatment. However, non-biodegradable synthetic polymers are largely applied as the organic components of these composites, leading to negative environmental impacts. To acquire efficient composite coagulant with less environmental risks, a novel ...
Get Price2018-6-22 · Decoloration performance and mechanism, stability and structure of flocculants were determined from experimental data, and the results indicated that chitosan and poly‐ferric cerium silicate (CTS‐PFCS) flocculant, a three‐dimensional chain‐net structure with bar‐like branches, was a complex compound rather than a simple mixture of raw ...
Get Price2012-1-1 · Energy Procedia 17 ( 2012 ) 1627 – 1634 1876-6102 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Hainan University. doi: 10.1016/j.egypro.2012.02.290 2012 International Conference on Future Electrical Power and Energy Systems Preparation of New Type Poly-silicate Coagulant and Its Coagulation Property Wanyou Zhang * , Ting Zhang, Lijuan Xi, …
Get PriceClay-brine process employing activated clay, NaCl, HCl, and HF as raw materials is the primarily advanced technology to synthesize cryolite in the present industrial grade. However, plenty of byproducts of fluorine-containing waste HCl at the concentration of about 10%~12% could not be utilized comprehensively and are even hazardous to the environment.
Get Price2009-8-1 · Currently, research is focused on the synthesis of new composite coagulants, which are constituted of both inorganic and organic materials. In this paper, the development of relevant reagents was investigated, by combining the inorganic pre-polymerised iron-based coagulant Polyferric Sulphate (PFS) with an organic, non-ionic polymer (Polyacrylamide, PAA) under different PAA/Fe (mg/l) and …
Get Price2017-5-2 · A novel magnetic composite coagulant, prepared from nano-Fe3O4 and poly-aluminum chloride, was introduced to pre-treat mature landfill leachate. The coagulation performance of the coagulant as well as its microstructural morphology was discussed. Coagulation experimental results revealed that the coagulation performance of the landfill leachate using the new coagulant was better …
Get Price2020-2-26 · Synthesis, characterization, and degradation test. According to reported methods [34,35,36,37], the synthesis of serial samples via direct melt polycondensation and their structure and performance ...
Get PriceSadaf Batool, Zakir Hussain, Muhammad Bilal Khan Niazi, Usman Liaqat and Muhammad Afzal, Biogenic synthesis of silver nanoparticles and evaluation of physical and antimicrobial properties of Ag/PVA/starch nanocomposites hydrogel membranes for wound dressing application, Journal of Drug Delivery Science and Technology, 10.1016/j.jddst.2019.05 ...
Get PriceClay-brine process employing activated clay, NaCl, HCl, and HF as raw materials is the primarily advanced technology to synthesize cryolite in the present industrial grade. However, plenty of byproducts of fluorine-containing waste HCl at the concentration of about 10%~12% could not be utilized comprehensively and are even hazardous to the environment.
Get Price2020-9-15 · Removal of strontium was studied by an efficient sustainable and environmentally friendly nanocomposite, prepared from thermally activated and chemically modified sawdust coated with graphene oxide nanoparticle. The adsorbent used in this study efficiently removed strontium from synthetic aqueous solution. Batch study and fixed-bed column study were performed for optimizing the …
Get Price2020-6-29 · A composite flocculant (PSAS-CS) consisted of cationic starch (CS) and polyaluminum silicate (PSAS) was prepared and used for the flocculation of simulated water samples. The morphology and structure of PSAS-CS were characterized by X-ray diffraction, scanning electron microscopy, and infrared spectroscopy. The effect of flocculation conditions such as the flocculant dosage and the …
Get Price1. Introduction Coagulation is one of the most common phenomena in nature and artificially enhanced water treatment systems. Coagulation is a process in which small particles are combined into larger aggregates (flocs) and dissolved organic matter is adsorbed onto particulate aggregates so that these impurities can be removed in the subsequent solid/liquid separation processes. 1 The mechanism ...
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 Price2021-7-11 · The situation of the synthesis methods of energetic borides (nitrogen-rich boron esters, poly (azole)borates, nitroboranes, nitrogen-rich borazines and azide boron compounds) is reviewed. The research focus and development trend of various boron compounds are analyzed, and the potential application prospect in the propellant is investigated.
Get Price2019-5-2 · A prototype LiFePO 4 /Li battery with the PEO−LiPFSDI composite electrolyte shows excellent cycling performance with a high reversible capacity of 148 mAh g −1 at a rate of 0.1 C and 135 mAh g −1 at 0.2 C (70 °C), and maintains 100 stable cycles for over 1500 hours.
Get Price(6) Zhonglian Yang, Baoyu Gao*, Yan Wang, Xinxin Liu, Qinyan Yue, Synthesis and application of polyferric chloride-poly (epichlorohydrin-dimethylamine) composites using different crosslinkers, Chemical Engineering Journal, 2012, 213: 8-15 （ SCI 收录）
Get Price2020-6-29 · A composite flocculant (PSAS-CS) consisted of cationic starch (CS) and polyaluminum silicate (PSAS) was prepared and used for the flocculation of simulated water samples. The morphology and structure of PSAS-CS were characterized by X-ray diffraction, scanning electron microscopy, and infrared spectroscopy. The effect of flocculation conditions such as the flocculant dosage and the …
Get Price1. Introduction Coagulation is one of the most common phenomena in nature and artificially enhanced water treatment systems. Coagulation is a process in which small particles are combined into larger aggregates (flocs) and dissolved organic matter is adsorbed onto particulate aggregates so that these impurities can be removed in the subsequent solid/liquid separation processes. 1 The mechanism ...
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 Price2011-10-26 · Mohammad Ali Semsarzadeh, Maral Ghahramani, Synthesis and morphology of polyacrylate-poly(dimethyl siloxane) block copolymers for membrane application, Macromolecular Research, 10.1007/s13233-015-3112-3, 23, 10, (898-908), (2015).
Get Price2021-7-11 · The situation of the synthesis methods of energetic borides (nitrogen-rich boron esters, poly (azole)borates, nitroboranes, nitrogen-rich borazines and azide boron compounds) is reviewed. The research focus and development trend of various boron compounds are analyzed, and the potential application prospect in the propellant is investigated.
Get Price2020-12-1 · The use of DNDs in various industry branches is driven by the need to crucially improve the performance characteristics of composite materials. With the existing level of development of the synthesis and understanding of application prospects of DNDs, they are now considered among the most advantageous carbon nanomaterials for nanotechnologies.
Get Price2020-2-5 · Carbon dots (CDs) are of particular interest in numerous applications. However, their efficiency for heavy metal removal from wastewater was not yet reported. Herein, we rationally synthesized CDs from petroleum coke waste via hydrothermal treatment in the presence of ammonia. This drove the formation of outstanding photoluminescent, water-soluble, biocompatible, and high …
Get PriceOver the past few decades, with the development of science and technology, the field of biomedicine has rapidly developed, especially with respect to biomedical materials. Low toxicity and good biocompatibility have always been key targets in the development and application of biomedical materials. As a degradable and environmentally friendly polymer, polylactic acid, also known as polylactide ...
Get PriceNatural organic matter (NOM) is easily soluble in surface water and difficult to be removed thoroughly. In this paper, polyaluminum chloride-polyacrylamide (PAC-PAM), as a new water treatment material, was proposed to solve this problem by coagulation treatment. The performance, mechanism and kinetic process of NOM removal were investigated systematically.
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
Get Price2020-12-1 · The use of DNDs in various industry branches is driven by the need to crucially improve the performance characteristics of composite materials. With the existing level of development of the synthesis and understanding of application prospects of DNDs, they are now considered among the most advantageous carbon nanomaterials for nanotechnologies.
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 ultrasound ...
Get Price2021-6-6 · 高宝玉，男，博士，山东大学特聘教授、二级岗位教授，博士生导师，泰山学者特聘专家，享受国务院政府特殊津贴，山东省有突出贡献的中青年专家，山东省优秀科技工作者，济南“泉城学者”，济南专业技术拔尖人才，注册环保工程师。
Get PriceOver the past few decades, with the development of science and technology, the field of biomedicine has rapidly developed, especially with respect to biomedical materials. Low toxicity and good biocompatibility have always been key targets in the development and application of biomedical materials. As a degradable and environmentally friendly polymer, polylactic acid, also known as polylactide ...
Get Price2018-2-1 · 姓名：郑怀礼 出生年月：1957年4月技术职务：二级教授，博士生导师，，国务院政府特殊津贴专家行政职务：电子邮箱：[email protected]，[email protected]联系电话：13896131029；17783111902； QQ：532477294通信地址：重庆市沙坪坝区 ...
Get Price2016-6-6 · Here we report the synthesis of novel surface active polymers using cyclic esters (D,L-lactide) and temperature sensitive polyols (D-sorbitol) as renewable building blocks. We highlight the modification of chain length and degree of branching to provide a route to tailoring the properties and application performance of these new compounds.
Get Price2019-5-25 · Fouling behavior of thin-film composite (TFC) membranes synthesized on sulfonated polyphenylenesulfone (sPPSU) hollow fiber substrates was investigated for separating oil–water emulsions under forward osmosis (FO). The water and salt reverse fluxes of the TFC-FO hollow fiber membranes were found to be stable for a period of 28 days when deionized (DI) water was used as …
Get Price2020-9-9 · Moreover, there is no study reported in the literature on the performance prediction of composite amine mixed matrix membranes. Therefore, the amine composite mixed matrix membrane is developed and characterized for high-pressure application up to 30 bar. The permeance and ideal selectivity of the synthesized MMMs were investigated.
Get Price2020-3-10 · [14] Jianfeng Li, Jianguo Li, Xinyuan Liu, Zhiping Du, Fangqin Cheng*, Effect of silicon content on preparation and coagulation performance of poly-silicic-metal coagulants derived from coal gangue for coking wastewater treatment, Separation and Purification
Get Price2019-9-26 · Effect of non-solvent additives on the morphology and separation performance of poly(m-phenylene isophthalamide) (PMIA) hollow fiber nanofiltration membrane. Desalination, 365:293-307. 3. Tao Wang, Ye Li, Changwei Zhao*. 2015. Synthesis and Properties of
Get Price2020-2-5 · Carbon dots (CDs) are of particular interest in numerous applications. However, their efficiency for heavy metal removal from wastewater was not yet reported. Herein, we rationally synthesized CDs from petroleum coke waste via hydrothermal treatment in the presence of ammonia. This drove the formation of outstanding photoluminescent, water-soluble, biocompatible, and high …
Get Price2018-2-1 · 姓名：郑怀礼 出生年月：1957年4月技术职务：二级教授，博士生导师，，国务院政府特殊津贴专家行政职务：电子邮箱：[email protected]，[email protected]联系电话：13896131029；17783111902； QQ：532477294通信地址：重庆市沙坪坝区 ...
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 Price2021-3-30 · With the advantages in biocompatibility, antimicrobial ability, and comparative facile synthesis technology, poly-L-lysine (PLL) has received considerable attention in recent years. Different arrangement forms and structures of the backbone endow lysine-based polymers with versatile applications, especially for ε-poly-L-lysine (EPL) and lysine-based dendrimer (LBD) compounds.
Get PriceApplication of the CSA solution in coagulation of C membrane resulted in a decrease in the thickness of the membrane obtained by about 35% compared to pure PAN membranes. Based on the observed changes, it may be concluded that the coagulation of PAN/PANI membranes in an acid solution leads to the formation of water-soluble polyaniline salt.
Get Price2019-9-26 · Effect of non-solvent additives on the morphology and separation performance of poly(m-phenylene isophthalamide) (PMIA) hollow fiber nanofiltration membrane. Desalination, 365:293-307. 3. Tao Wang, Ye Li, Changwei Zhao*. 2015. Synthesis and Properties of
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 Price2021-3-24 · For each technique discussed, we analyse the composite properties and application-specific performance arising from the morphology and dispersion of …
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