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2021-1-1 · Based on Table 3, at PFC conditions, it can be seen that the pH from 7.6 to 10.4 requires less amount of NaOH (approximately 9 ml of 1 N NaOH per 1 L of sample water) to balance than in optimal conditions of PAC flocculation. The amount of NaOH used …
Get PriceThis study focused on investigate on the performance of Poly Ferric Chloride (PFC) as a flocculant for flocculation process in tannery wastewater treatment due to its advantages which could apply ...
Get Price2021-1-28 · In their study, Galloux et al. pointed out that PTC is more efficient than ferric chloride, which is comparable to the results obtained from the current study (Galloux et al. 2015). Residual pH For PTC in optimum dosage (600 mg/L), the solution pH was reduced from 7 to 6.61, and for PFC in optimum dosage (800 mg/L), pH was reduced from 9 to 7.12 after the coagulation-flocculation process.
Get PricePreparation and performance of a high purity poly-aluminum chloride. ... 81.45% under optimal conditions (NaOH; 3 mol L−1, L S−1; 5/1, 75°C, 2 h), and sodium silicate modulus (nSiO2:nNa2O) is ...
Get PriceThe optimum coagulation pH range of PAFSiC 2.0/5 was 5.0-9.0, slightly wider than that of PAC (6.0-8.0). The process can be easily incorporated into high-purity graphite production plants, thereby ...
Get Price2019-5-25 · This is a two-part work on the chemistry of iron(III) as coagulant in the treatment of cork processing wastewater. The main aim of the first part was to determine the removal of organic matter as measured by reductions in chemical oxygen demand (COD), polyphenols (P), and aromatic compounds (A) that can be obtained using this physicochemical process. To this end, jar-test experiments were …
Get Price2021-5-10 · Impacts of ferric chloride, ferrous chloride and solid retention time on the methane-producing and physicochemical characterization in high-solids sludge anaerobic digestion Renew. Energy , 139 ( 2019 ) , pp. 1290 - 1298 , 10.1016/j.renene.2019.02.139
Get Price2021-2-1 · 1. Introduction. Poly ferric sulfate (PFS), the polymerized iron salts, can provide a variety of nucleic hydroxyl high-valence complex ions and hydrolyze to the highly cross-linked hydrophobic multinucleate and multichain-hydroxyl polymers after dissolving in aqueous phase, making it possess the high coagulation efficiency (Jiang et al., 1998; Zouboulis et al., 2008).
Get Price(1) Currently PEMFC is an expensive technology due to the high production cost of high purity hydrogen, and one research direction is to develop catalytic electrode materials which can function well in the presence of impurities; (2) the commonly used IEMs are not stable at high temperature PEMFC operation, so research is needed to develop low-cost membrane materials with excellent stability at high temperatures and high …
Get Price2018-12-12 · In this study, the Esterification wastewater was treated by three kinds of flocculants (poly aluminum chloride (PAC), polymeric ferric sulfate (PFS), poly aluminum ferric chloride (PAFC)), the influences of flocculent concentration, temperature and pH on …
Get PriceIn this study, the UV-Fenton process was used to treat a spent electroless nickel plating bath, and to recover high purity ferric phosphate which could be used as a raw material in lithium ferric ...
Get Price2019-1-20 · This study investigated the efficient removal of As(V) from contaminated water using enhanced coagulation by Fe-Mn bimetal nano-oxides in combination with poly-ferric chloride (PFC) and poly-aluminum chloride (PAC). The effects of coagulant dose, initial pH, initial As(V) concentration, Fe-Mn nano-oxide dose and flocs properties were investigated.
Get Price2020-11-3 · flocculants such as ferric chloride, polyaluminum chloride and poly-meric ferric sulfate (PFS), textile dyeing sludge has a large content of elements such as S, Cl, Fe, and Al (Zhang et al., 2017). The traditional Fe2+/H 2O 2 system is a commonly used advanced oxidation technology that has been investigated in several studies. For
Get Price2005-7-8 · This is a two-part work on the chemistry of iron(III) as coagulant in the treatment of cork processing wastewater. The main aim of the first part was to determine the removal of organic matter as measured by reductions in chemical oxygen demand (COD), polyphenols (P), and aromatic compounds (A) that can be obtained using this physicochemical process.
Get PriceThe microalga Haematococcus pluvialis Flotow is one of the natural sources of astaxanthin, a pigment widely used in salmon feed. This study was made to discover optimal conditions for biomass and astaxanthin production in H. pluvialis from Steptoe, Nevada (USA), …
Get Price2020-2-18 · High-poly-aluminum chloride sulfate (HPACS) coagulants with different [SO 4 2−]/[Al 3+] molar ratio (S) were prepared and proved to have high coagulation efficiency for the removal of humic acid and strong stability for storage and application.The results showed that the higher the SO 4 2− addition, the bigger the aluminum polymerization particles and the more the polymerization Al c ...
Get Price2018-10-10 · 1. Introduction. Functional foods are defined by the European Commission as “a food product that can only be considered functional if together with the basic nutritional impact it has beneficial effects on one or more function of the human organism thus either improving the general physical conditions or/and decreasing the risk of the evolution of disease” [].
Get Price2021-5-10 · Coastal freshwater forested wetlands are rapidly transitioning from forest to marsh, leaving behind many standing dead trees (snags) in areas often called ‘ghost forests’. Snags can act as conduits for soil produced greenhouse gases (GHG) and can also be sources as they decompose. Thus, snags have the potential to contribute GHGs to the atmosphere, but emissions are not well understood.
Get Price2018-12-12 · In this study, the Esterification wastewater was treated by three kinds of flocculants (poly aluminum chloride (PAC), polymeric ferric sulfate (PFS), poly aluminum ferric chloride (PAFC)), the influences of flocculent concentration, temperature and pH on …
Get Price2016-1-12 · Results. In this study, we developed a process for high-optical-purity d-lactate production using an engineered alkaliphilic Bacillus strain. First, the native l-lactate dehydrogenase gene (ldh) was knocked out, and the d-lactate dehydrogenase gene from Lactobacillus delbrueckii was introduced to construct a d-lactate producer.The key gene responsible for exopolysaccharide biosynthesis (epsD ...
Get Price2013-3-13 · Fluoride is a persistent and non-biodegradable pollutant that accumulates in soil, plants, wildlife and in human beings. Therefore, knowledge of its removal, using best technique with optimum efficiency is needed. The present survey highlights on efficacy of different materials for the removal of fluoride from water. The most important results of extensive studies on various key factors (pH ...
Get Price2006-5-3 · The physical properties of natural organic matter (NOM) flocs, such as size, growth rate, and strength, were investigated using a laser diffraction particle sizing device. Conditions were set such that varying carbon coagulant ratio and zeta potential could both be investigated. Results demonstrated a link between zeta potential and coagulation and flocculation performance, with the production ...
Get Price2019-12-4 · Response surface methodology (RSM) approach was used for optimization of the process parameters and identifying the optimal conditions for the removal of …
Get Price2018-6-28 · The objectives of this study were: (1) to evaluate chitosan flocculation performance in the harvesting of C. vulgaris biomass and determine its optimal dose, (2) to disclose the sedimentation properties of C. vulgaris biomass flocculated by chitosan, (3) to reveal the recyclability of the spent medium from flocculation to regrow microalgae and ...
Get Price2018-10-17 · Chemicals. Poly-aluminum chloride (Al 2 (OH) n Cl 6−n.YH 2 O, Al 2 O 3 = 30%wt, basicity = 65% and pH = 3) was used as a coagulant and anionic (A 300), cationic (C 270) and nonionic polymers, as the coagulant aids were provided from AquaTech Company, Switzerland.. Preparation of solution. In order to prepare a 10 percent clear solution for coagulant, 10 g of PAC was dissolved to 100 mL of ...
Get Price2021-3-16 · Groundwater treatment sludge is a Fe/Mn-rich waste generated in mass production in a groundwater treatment plant for potable water production. The conventional disposal of sludge, such as direct discharge into river/lake, sea, and landfill, is not environmentally sustainable. Herein, a novel method was proposed to effectively separate Fe/Al and recover Mn via a combined hydrochloric acid ...
Get PriceThe optimal conditions were as follows: Coagulant dosage of 871 mg/L, flocculent dosage of 22.3 mg/L and pH 8.35. The study of dairy effluents treatment by EC was carried out using aluminum electrodes. The analysis of the filtrates showed that the COD was reduced to 61% while the removal of phosphorus, nitrogen contents and turbidity were 89 ...
Get PriceWhereas 100 mg of ferrous sulfate iron/day are sufficient for an optimal oral compensation iron therapy and to produce initial hemoglobin regeneration rates of about 0.26 g/100 ml/day, 400 to 1000 mg of ferric iron/day are necessary for the same therapeutic effect because of the poor bioavailability of ferric iron.
Get Price2021-3-16 · Groundwater treatment sludge is a Fe/Mn-rich waste generated in mass production in a groundwater treatment plant for potable water production. The conventional disposal of sludge, such as direct discharge into river/lake, sea, and landfill, is not environmentally sustainable. Herein, a novel method was proposed to effectively separate Fe/Al and recover Mn via a combined hydrochloric acid ...
Get Price2020-12-10 · Signal-to-noise ratio analysis showed the optimal spherical integrity (F1) achieved when the above parameters were designed as 0.1, 2.5 wt%, 6 wt%, 8 cm, 30 mL/h, 150 rpm, 0.25 mm and 2 h ...
Get PriceInternational Conference on Chemical and Material Engineering (ICCME) is an annual conference organized by Universitas Diponegoro, Indonesia. The theme of ICCME 2020 is 'Role of Chemical and Material Engineering in Ensuring Food, Water and Energy for Sustainable Development Goals (SDGs)'. The event is designed to emphasize advances and new ...
Get Price2020-9-15 · Chemical electro-osmosis with an injected saline solution can be described as an efficient method for adjusting the soil microstructure and improving soil conductivity, and the effect of electro-osmotic consolidation on soft foundations can also be improved by this novel technology in regard to foundation treatment. To better study the electro-osmotic characteristics of soft clay from Taizhou ...
Get Price2018-12-24 · The formation of amide bonds is one of the most valuable transformations in organic synthesis. Beckmann rearrangement is a well-known method for producing secondary amides from ketoximes. This study demonstrates the rapid synthesis of ketoximes and amides in microdroplets. Many factors are found to affect the yield, such as microdroplet generation devices, temperature, catalysts, …
Get Price2014-1-29 · D-2,3-butanediol has many industrial applications such as chiral reagents, solvents, anti-freeze agents, and low freezing point fuels. Traditional D-2,3-butanediol producing microorganisms, such as Klebsiella pneumonia and K. xoytoca, are pathogenic and not capable of producing D- 2,3-butanediol at high optical purity. Bacillus licheniformis is a potential 2,3-butanediol producer but the wild ...
Get Price2018-11-5 · The potential benefits of biofuels depend on the environmental impacts of biomass production. High-diversity mixtures of grassland species grown on abandoned agricultural lands have been proposed ...
Get Price2019-5-6 · processes Article Screening and Optimization of Demulsifiers and Flocculants Based on ASP Flooding-Produced Water Bin Huang 1,*, Jie Wang 1, Wei Zhang 3, Cheng Fu 1,2,*, Ying Wang 4 and Xiangbin Liu 5 1 Key Laboratory of Enhanced Oil Recovery, Ministry of Education, College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China; [email protected]
Get Price2021-2-1 · As is well-known, endo-1,4-β-xylanase and β-xylosidase are the rate-limiting enzymes in the degradation of xylan (the major hemicellulosic component), main functions of which are cleavaging xylan to release xylooligosaccharides (XOS) and xylose that these two compounds have important application value in fuel, food, and other industries. This study focuses on enzymatic hydrolysis of poplar ...
Get Price2021-6-3 · In addition to traditional inorganic coagulants and synthetic flocculants including polyaluminium chloride, ferric chloride, and polyacrylamide derivatives 11,21,22,23, natural polymeric ...
Get PriceIn this study, the optimized growth conditions of MTB AMB-1 were investigated for enhancing both bacterial growth and production of BMs. The results showed that the optimal conditions of culture are an oxygen concentration of 4.0%, a pH value of 7.0, 20 μmol/L of ferrous sulfate, 800 mg/L of sodium nitrate, and 200 mg/L of succinic acid.
Get PriceWe report a facile and environmentally friendly solid-state method to prepare mesoporous wollastonite (calcium silicate, CaSiO 3) based composite adsorbent from chicken eggshells and SiO 2 powder as starting materials for food dyes removal, i.e. brilliant blue. The CaSiO 3 particles were prepared using CaCO 3 /SiO 2 molar ratio of 1:5 and 2:5 and calcined at 1100°C.
Get Price2021-2-11 · The combined organic phases were dried over MgSO 4, and the solvent was removed under reduced pressure; subsequently, the product was isolated in high purity by distillation under reduced pressure in typical yields of 60–70%. AzGA was identified as a colorless liquid.
Get Price2011-11-15 · In this study, an inorganic polymer coagulant, polyferric chloride (PFC) was used in a low dissolved organic carbon (DOC) and high alkalinity surface water treatment. The influence of coagulation pH on removal efficiency, floc growth, strength, re-growth capability and fractal dimension was examined.
Get Price2013-3-13 · Fluoride is a persistent and non-biodegradable pollutant that accumulates in soil, plants, wildlife and in human beings. Therefore, knowledge of its removal, using best technique with optimum efficiency is needed. The present survey highlights on efficacy of different materials for the removal of fluoride from water. The most important results of extensive studies on various key factors (pH ...
Get Price2019-8-8 · To study the effects of additives, AMIM was added at 1 wt% and 3 wt% to the solutions during the stirring process. PVDF fibre membranes were electrospun with a spinneret–collector distance of 15 cm with a range of voltage and spinning rates in order to determine the optimal spinning conditions …
Get Price2017-10-1 · This study presents the autonomy of an Electric Vehicle that utilizes four different types of batteries: Lithium Ion (Li-Ion), Molten Salt (Na-NiCl 2), Nickel Metal Hydride (Ni-MH) and Lithium Sulphur (Li-S), all of them having the same electric energy storage capacity. The novelty of this scientific work is the implementation of four different ...
Get Price2018-5-15 · The aim of this study was to find the best conditions to radiolabel VH-13 with technetium-99m to avoid the potential formation of aggregates during the radiolabeling process. Methods: VH-13 contains a poly-His tag in C-terminal position that is a specific site suitable for labeling with Tc-99m using the tricarbonyl method.
Get PricePretreatment. Myat et al. conducted a testing study to evaluate the pretreatment of oxidation and coagulation on ceramic microfiltration (CMF) and subsequently reverse osmosis (RO) in an advanced treatment train for water reuse.The use of coagulation with either ozone (O 3) or ultraviolet hydrogen peroxide (UV/H 2 O 2) and coagulation with poly aluminum chloride helped to sustain a high flux ...
Get Price2020-3-6 · The ability to grow safe, fresh food to supplement packaged foods of astronauts in space has been an important goal for NASA. Food crops grown in space experience different environmental conditions than plants grown on Earth (e.g., reduced gravity, elevated radiation levels). To study the effects of space conditions, red romaine lettuce, Lactuca sativa cv ‘Outredgeous,’ plants were grown ...
Get Price2019-8-19 · Acute kidney injury (AKI) in patients with septic shock is associated with high mortality, but the appropriate timing for initiating continuous renal replacement therapy (CRRT) is controversial.
Get Price2019-12-31 · In recent years, the addition of nanometer materials to concrete materials has attracted a group of increasing number of scholars’ research interests, and nano-SiO 2 is one of the research hotspots. In this paper, we briefly introduce the influence of nano-SiO 2 on setting time, slump, shrinkage, durability and mechanical properties of concrete. In addition, this review also includes the ...
Get PriceApproach: In this study, the effectiveness of aluminum sulfate and ferric chloride was evaluated at different pH values and coagulant dosage to find optimal operational conditions for low to high turbidity waters. The influence of lime, as a coagulant aid, on coagulation process was also studied.
Get Price2020-5-22 · The objective of this study was to determine the effects of supplementing Cu on growth performance, Cu metabolism and Cu-related enzyme activities of weanling pigs fed diets with two different Cu sources, and to estimate optimal Cu requirements and relative bioavailability from these two sources for pigs. Weanling pigs were allocated to 14 treatments arranged factorially, including 6 added …
Get Price2013-2-5 · The idea of biological phosphorus removal is to create conditions in secondary treatment that result in the microorganisms absorbing excess phosphorus. This phosphorus is removed from the flow when the activated sludge is wasted. If a sidestream is high in phosphorus, the sidestream can be treated. Metal salts can be added to these sidestreams
Get Price2018-2-9 · date, the effects of different drying conditions as well as types of extraction solvents on the total phenolic content and antioxidant properties of watermelon rind from red- and yellow-fleshed varieties has been rarely reported. Therefore, the present study aim to determine the effect of three various drying condition (hot-air oven drying at 40
Get Price2018-6-28 · The objectives of this study were: (1) to evaluate chitosan flocculation performance in the harvesting of C. vulgaris biomass and determine its optimal dose, (2) to disclose the sedimentation properties of C. vulgaris biomass flocculated by chitosan, (3) to reveal the recyclability of the spent medium from flocculation to regrow microalgae and ...
Get Price2017-1-18 · The optimal conditions obtained were 60 min of milling in case of dry ball milling while 10 repeated milling operations were required in case of wet disk milling. Maximum glucose (89.4%) and xylose (54.3%) were obtained with conventional ball milling method as compared to 78.5% glucose and 41.5% xylose with wet disk milling method.
Get Price2016-11-22 · Cliffed coasts erode when attacked by energetic waves. Cliff retreat threatens coastal assets and livelihoods. Understanding rates of past erosion is vital to quantifying these risks, particularly when confronted with expected increases in storminess and sea level, and given continued human occupation and engineering of coastal regions. Historical observations of cliff retreat span 150 y at ...
Get Price2012-9-1 · 2.2. Preparation of experimental culture and osteogenic medium. The conventional culture medium used in the following experiments was L-DMEM (Gibco BRL, Cargo number 11885084), which is composed of various amino acids, vitamins, inorganic salts (including 3.7 g/L sodium bicarbonate), glucose, pyruvic acid, and so on, as can be seen in Table 1.The conventional culture medium was …
Get Price2011-12-19 · Lowest Purity. 1. A.C.S. A chemical grade of highest purity and meets or exceeds purity standards set by American Chemical Society (ACS). 2. Reagent High purity generally equal to A.C.S. grade and suitable for use in many laboratory and analytical applications. 3. U.S.P. A chemical grade of sufficient purity to meet or exceed requirements of ...
Get PriceOriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and chemistry letters. Oriental Journal of Chemistry is abstracted and indexed in ...
Get Price2014-7-30 · The optimal synthesis condition achieves a BET surface area and total acid amount up to 349.6 m 2 /g and 1.389 mmol/g， respectively. Due to the high BET surface area and abundant mesopores， the as-prepared ASA-supported Pd catalyst exhibits high
Get PriceCitrus contains a range of highly beneficial bioactive compounds, such as polyphenols, carotenoids, and vitamins that show antimicrobial and antioxidant properties and help in building the body's immune system. On consumption or processing,
Get Price2020-11-20 · This study evaluated the potential of biochar impregnated with Fe3+ or Ca2+, or mixed with Polonite®, as a filter material for removal of phosphate (PO4-P) from wastewater in onsite wastewater treatment systems (OWTS). Four treatments with biochar were investigated: unimpregnated biochar (UBC), biochar impregnated with iron Fe3+ (FBC), biochar impregnated with calcium oxide (CBC), …
Get PriceThe study revealed that China and the USA with a contribution of 1339 articles (28.70%) and 593 articles (12.71%), respectively, dominated research in this field. This clearly demonstrates the growing research in fuel cell and their use as alternate energy source.
Get Price2.2 Preparation of DA and polyester. About 10 g of SO was added into a three-necked flask with 5 ml of acetate buffer. Then, 20 ml of acetone and ethanol with a ratio of 1:1 was added to the flask. By titration with 0.1 n KOH aqueous solution, the total fatty acid generated in the mixture was determined.
Get PriceTam, Aaron (2018) Optimal Design and Control of Residential Airconditioning Equipment With Integrated Thermal Storage . Tang, Jialiang (2018) Development of High-Capacity Anodes for Advanced Li-/Na-Ion Rechargeable Batteries . Tang, Kaile (2018) Comprehensive Study of Flow and Chemical Reactions in a Submerged Lance Copper Smelting Furnace
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