MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Carbon reduction sodium sulfate
Kinetics of sodium sulfate reduction in the solid state by carbon
1988年1月1日 With CO 2, the kinetics are product layer diffusion controlled The reduction rate is strongly retarded by CO 2 The reduction is catalyzed by TiO 2 and Fe 3 O 4 In the 2024年9月1日 The main sodium carbonation pathways for the precipitation of NaHCO 3 in the CCU process are soda ash carbonation, Solvay process, ammonia sodium sulfate Advancement in sodium carbonation pathways for sustainable 2015年9月18日 According to the stoichiometry of the reaction, 169 g of carbon are required to reduce 100 g of sulfate In practical glasswork it is recommended that coal amount of 6 – 8% Interaction in Sodium Sulfate – Carbon Mixtures as a Function of Carbon monoxide reduction of sodium sulfate mixed with sodium titanate The Canadian Journal of Chemical Engineering 1993, 71 (6) , 892900 https://doi/101002/cjce Catalytic Reduction of Sodium Sulfate ACS Publications
THE INSTITUTE OF PAPER CHEMISTRY
Sulfate reduction by carbon is catalyzed by sodium carbonate Reduction rates are about one order of magnitude lower in carbonatefree melts This is probably due to the relatively high 2024年11月2日 Herein, we demonstrate that even trace amounts of sulfate (SO 42−) residuals on Ru/TiO 2 can totally change the CO 2 reduction from methanation to reversewater gas Sulfate residuals on Ru catalysts switch CO2 reduction fromThe solid state reduction kinetics by carbon monoxide of sodium sulfate mixed with sodium titanate are studied in a thermogravimetric system at 670‐750°C It is found that the reduction Carbon monoxide reduction of sodium sulfate mixed with sodium 2020年1月12日 The successful carbothermal reduction of Na 2 SO 4 with porous carbon (ketjen black (KB) was proven via Xray diffraction (XRD) measurements of the resulting composites Na 2 S/C660, 760, 860, 960, Sodium Sulfide Cathodes Superseding Hard Carbon
Advancement in sodium carbonation pathways for sustainable carbon
2024年9月1日 Carbon capture and utilization (CCU) stands as a pioneering solution to counter greenhouse gas emissions linked to fossil fuel consumption Research in the utilization of CO 2 with sodiumrich sources, particularly industrial waste, for the synthesis of sodium bicarbonate (NaHCO 3) has made significant progressDespite the potential benefits, challenges such as 2015年9月18日 Not only a deficiency but also an excess of SO 3 in sulfate reduction creates difficulties in the implementation of the technology The ratios currently Min’ko, NI, Morozova, II Binaliev, IM Interaction in Sodium Sulfate – Carbon Mixtures as a Function of Their Dispersity Glass Ceram 72, 159–165 (2015 ) https Interaction in Sodium Sulfate – Carbon Mixtures as a Function of Key Points Sulfate reduction is a vital mechanism for bacteria and archaea living in oxygendepleted, sulfaterich environments Sulfate reducers may be organotrophic, using carbon compounds, such as lactate and pyruvate as 59C: Sulfate and Sulfur Reduction Biology LibreTexts2021年7月1日 This work innovatively found that Fe(II) activated sodium percarbonate (SPC) process could successfully degrade carbon tetrachloride (CT) in the environment of sodium dodecyl sulfate (SDS) CT degradation was remarkably accelerated to 872% at the optimum SPC/Fe(II)/CT molar ratio of 5/10/1 with the environment of 02 critical micelle concentration Mechanism of carbon tetrachloride reduction in Fe(II) activated
A simple approach through reduction of Na ScienceDirect
2024年11月15日 In recent years, H 2 reduction of Na 2 SO 4 to produce Na 2 S has been attracted research interest because carbon emissions can be reduced [[43], [44], [45]]He et al [43] investigated the effects of Na 2 S/Na 2 SO 4 ratio and reaction temperature on the reduction rate of Na 2 SO 4 in a dilutephase fluidized systemThis method aimed to increase the 2013年3月22日 the reduction of one sodium sulfate molecule requires 24 g carbon, ie, 169% Under production conditions much less carbon is used for sodium sulfate reduction for colorless glass (6 – 10%) This amount of sodium sulfate is sufficient the function of Role of sodium sulfate in glass technology Glass and Ceramics2018年12月1日 Gupta et al [22, 23] found that it was difficult to nucleate iron during the reduction of ilmenite with carbon, but this could be overcome by the use of a catalyst They also found that the addition of ferric chloride increased This indicates that the addition of sodium sulfate leads to a decrease in the melting point of the Carbothermic reduction of ilmenite concentrate in semimolten The solid state reduction kinetics by carbon monoxide of sodium sulfate mixed with sodium titanate are studied in a thermogravimetric system at 670750°C It is found that the reduction of this mixtuCarbon monoxide reduction of sodium sulfate mixed with sodium
Kinetics of bacterial sulfate reduction in an activated sludge plant
2003年11月1日 1 Introduction Sulfatereducing bacteria (SRB) are functionally important in many anoxic environments, especially in sulfaterich marine and estuarine sediments, where they play a major role in the anaerobic degradation of organic matter []SRB may also contribute significantly to anaerobic carbon mineralization in lowsulfate environments such as freshwater 2012年8月1日 In this paper, we reported microbially catalyzed sulfate reduction with polarized electrode (− 400 mV vs Ag/AgCl) as the sole electron donorIn potentiostatic batch assays, sulfate was reduced to sulfide, at rates falling in the range of 670–1216 equiv/l dCyclic voltammetry tests revealed that the sulfatereducing biofilms could accept electrons from Sulfate reduction with electrons directly derived from electrodes The hydrogen reduction kinetics of solid sodium sulfate mixed with sodium titanate are studied in a thermogravimetric system The conversiontime curves of the hydrogen reduction are sigmoidal in shape and are well described by the nucleation and growth model up to about 60% conversionKinetics of hydrogen reduction of sodium sulfate mixed with sodium Sulfate reduction by carbon is catalyzed by sodium carbonate Reduction rates are about one order of magnitude lower in carbonatefree melts The reduction of sodium sulfate to sulfide can be written as: Na 2 SO4 + Na 2 S + 202 (1) The basic step in reduction is removal of oxygen from sulfur However, due to anTHE INSTITUTE OF PAPER CHEMISTRY
Hydrogen Reduction of Alkali Sulfate Industrial Engineering
This article is cited by 8 publications Ye Xiao, Vicente Montes, Josephine M Hill Sulphur retention and insitu preparation of metal sulphide catalysts during activation of petroleum cokeIn this work, the selective reduction of lateritic nickel ore was carried out using sodium sulfate, sodium carbonate, and sodium chloride as additives The 5 wt% of anthracite coal, which contains 6035% of fixed carbon and 19% of sulfur, was used as a reductantAdditives in Selective Reduction of Lateritic Nickel Ores: Sodium One of the principal reactions occurring in the kraft recovery process is the reduction of sodium sulfate to sodium sulfide with a reducing agent Carbon monoxide is one reducing agent present in the furnace The purpose of this project was to study the reaction Na/sub 2/SO/sub 4/ + 4CO > Na/sub 2/S + 4CO/sub 2/A kinetic study of sodium sulfate reduction by carbon monoxide used by SRB as their carbon source (Lebel et al, 1985, and Maree et al, 1986) Thus, the primary objective of this study was to investigate the feasibility of sulfate reduction in an upflow anaer obic sludge blanket (UASB) reactor using molasses as a carbon source Sulfate reduction at different COD:S and upflow velocities was investigatedBiological Sulfate Reduction Using Molasses as a Carbon Source
Additives in Selective Reduction of Lateritic Nickel Ores: Sodium
In this work, the selective reduction of lateritic nickel ore was carried out using sodium sulfate, sodium carbonate, and sodium chloride as additives The 5 wt% of anthracite coal, which contains 6035% of xed carbon and 19% of sulfur,Methods and apparatus pertaining to reduction of sodium sulfate to sodium sulfide include the feeding of sodium sulfate into a combustion chamber in which the sodium sulfate is exposed to a reducing atmosphere while at the same time being exposed also to a temperature above the melting point of sodium sulfide Thus, a liquid accumulates at the bottom of the combustion Reduction of sodium sulfate to sodium sulfide Google PatentsSodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na 2 SO 4 as well as several related hydratesAll forms are white solids that are highly soluble in water With an annual production of 6 million tonnes, the decahydrate is a major commodity chemical product It is mainly used as a filler in the manufacture of powdered home Sodium sulfate Wikipedia2018年3月1日 Microbial sulfur (or sulfate) reduction is governed by two possible pathways, ie, either assimilatory or dissimilatory process In the assimilatory reduction pathway, reduced sulfur is generally used for biosynthesis of amino acids and proteins, whereas in dissimilatory reduction, sulfate (or sulfur) is reduced to inorganic sulfide by obligatory anaerobic sulfate reducersDiversity of SulfurOxidizing and SulfurReducing Microbes in
Effects of adding different carbon sources on the microbial
2023年3月15日 Among all the tested carbon sources, faster sulfate reduction was observed using propionate, lactate, ethanol and formate, and the optimal C/S ratio was three times higher than the stoichiometric ratio The type of carbon source also influenced sulfate reduction by shaping the microbial community2022年12月1日 The acclimation of sulfatereducing bacteria (SRB) was performed to improve its adaptation in sulfaterich systems with high sodium sulfate as a solution for disposing of soil salinization The effects of pH, temperature, and carbon–sulfur ratio (CSR) on the activity and reduction efficiency (RE) of SRB were analyzed, and the influence of grouting times (GTs) on Improved sulfate reduction efficiency of sulfatereducing 2021年1月20日 Low carbon cementitious materials: Sodium sulfate activated ultrafine slag/fly ash blends at ambient temperature Author links open overlay panel Junjie the compressive strength of all mortars was increased over time, and the reduction ratio in compressive strength because of the addition of FA was decreased (Ahmad et al, 2020 Low carbon cementitious materials: Sodium sulfate activated Moreover, low sulfate concentrations in soils, peatlands, and rice paddy fields are not constraints for either high sulfate reduction rates or sulfate reducer diversity Except for the extensively studied Desulfovibrio and Desulfotomaculum , plenty of other important SRPs inhabit soils, including those with occurring aerobic conditions ( Fig 1 )Sulfatereducing bacteria unearthed: ecological functions of the
Sulfate reduction and its important role in organic carbon
2021年10月5日 The sulfate reduction process plays an important role in the early diagenesis of organic matter in the estuarine and coastal sediments In this study, the sulfate reduction rates (SRR) were determined by the 35 SO 4 2− radioactive tracer method, and the SO 4 2−, CH 4, Cl − of sediment porewater and total organic carbon (TOC), temperature, and redox potential 2013年9月10日 A high nickel grade ferronickel was produced from laterite ore using the selective reductionwet magnetic separation process, with the addition of sodium sulfate (Na 2 SO 4)The ferronickel concentrate assaying 987% Ni, with a nickel recovery of 9090% can be obtained, when laterite ore was reduced at 1200 °C for 50 min with the addition of 10 wt% Na Mechanism of sodium sulfate in promoting selective reduction of nickel 1988年1月1日 The kinetics of Na 2 SO 4 reduction in the solid state by CO is studied in a thermogravimetric system below 800°C The reduction is autocatalytic and can be described by an initiation, acceleration and deceleration period The initiation reaction is between CO and Na 2 SO 4Without CO 2 present, the deceleration period is described by solidsolid phase Kinetics of sodium sulfate reduction in the solid state by carbon 2019年4月15日 Anti–bacterial and anti–corrosion properties of sodium pyrithione (SPT) were studied using experimental methods and quantum chemical calculations SPT at 80 mg/L reduced planktonic and sessile sulfate reducing bacteria (SRB) on X80 carbon steel to undetectable levelsThe performance and mechanism of bifunctional biocide sodium
Ameliorating the sodium storage performance of hard carbon
2024年11月1日 Hard carbon anodes have emerged as promising candidates for sodiumion batteries due to their inherent advantages Nevertheless, the surface imperfections in these materials often culminate in irreversible electrolyte consumption, fostering the development of a heterogeneous and fragile solid electrolyte interface (SEI), thereby compromising the initial This study investigates the reactions of Na2SO4 and its effects on iron and nickel reduction in the roasting of a highiron and lownickel laterite ore through gas composition, Xray diffraction, and scanning electron microscope analyses Results showed that a reduction reaction of Na2SO4 to SO2 was performed with roasting up to 600°C However, no clear influence on iron and nickel Effects of Na2SO4 on iron and nickel reduction in a highiron and 2024年9月1日 Carbon capture and utilization (CCU) stands as a pioneering solution to counter greenhouse gas emissions linked to fossil fuel consumption Research in the utilization of CO 2 with sodiumrich sources, particularly industrial waste, for the synthesis of sodium bicarbonate (NaHCO 3) has made significant progressDespite the potential benefits, challenges such as Advancement in sodium carbonation pathways for sustainable carbon 2015年9月18日 Not only a deficiency but also an excess of SO 3 in sulfate reduction creates difficulties in the implementation of the technology The ratios currently Min’ko, NI, Morozova, II Binaliev, IM Interaction in Sodium Sulfate – Carbon Mixtures as a Function of Their Dispersity Glass Ceram 72, 159–165 (2015 ) https Interaction in Sodium Sulfate – Carbon Mixtures as a Function of
59C: Sulfate and Sulfur Reduction Biology LibreTexts
Key Points Sulfate reduction is a vital mechanism for bacteria and archaea living in oxygendepleted, sulfaterich environments Sulfate reducers may be organotrophic, using carbon compounds, such as lactate and pyruvate as 2021年7月1日 This work innovatively found that Fe(II) activated sodium percarbonate (SPC) process could successfully degrade carbon tetrachloride (CT) in the environment of sodium dodecyl sulfate (SDS) CT degradation was remarkably accelerated to 872% at the optimum SPC/Fe(II)/CT molar ratio of 5/10/1 with the environment of 02 critical micelle concentration Mechanism of carbon tetrachloride reduction in Fe(II) activated 2024年11月15日 In recent years, H 2 reduction of Na 2 SO 4 to produce Na 2 S has been attracted research interest because carbon emissions can be reduced [[43], [44], [45]]He et al [43] investigated the effects of Na 2 S/Na 2 SO 4 ratio and reaction temperature on the reduction rate of Na 2 SO 4 in a dilutephase fluidized systemThis method aimed to increase the A simple approach through reduction of Na ScienceDirect2013年3月22日 the reduction of one sodium sulfate molecule requires 24 g carbon, ie, 169% Under production conditions much less carbon is used for sodium sulfate reduction for colorless glass (6 – 10%) This amount of sodium sulfate is sufficient the function of Role of sodium sulfate in glass technology Glass and Ceramics
Carbothermic reduction of ilmenite concentrate in semimolten
2018年12月1日 Gupta et al [22, 23] found that it was difficult to nucleate iron during the reduction of ilmenite with carbon, but this could be overcome by the use of a catalyst They also found that the addition of ferric chloride increased This indicates that the addition of sodium sulfate leads to a decrease in the melting point of the The solid state reduction kinetics by carbon monoxide of sodium sulfate mixed with sodium titanate are studied in a thermogravimetric system at 670750°C It is found that the reduction of this mixtuCarbon monoxide reduction of sodium sulfate mixed with sodium 2003年11月1日 1 Introduction Sulfatereducing bacteria (SRB) are functionally important in many anoxic environments, especially in sulfaterich marine and estuarine sediments, where they play a major role in the anaerobic degradation of organic matter []SRB may also contribute significantly to anaerobic carbon mineralization in lowsulfate environments such as freshwater Kinetics of bacterial sulfate reduction in an activated sludge plant2012年8月1日 In this paper, we reported microbially catalyzed sulfate reduction with polarized electrode (− 400 mV vs Ag/AgCl) as the sole electron donorIn potentiostatic batch assays, sulfate was reduced to sulfide, at rates falling in the range of 670–1216 equiv/l dCyclic voltammetry tests revealed that the sulfatereducing biofilms could accept electrons from Sulfate reduction with electrons directly derived from electrodes