Most Thanked Posts
-
Path of Exile is an action RPG developed by Grinding Gear Games... morePath of Exile is an action RPG developed by Grinding Gear Games and is considered by many to be the spiritual successor of Diablo II. POE has won many old-school ARPG fans by regularly updating content, fair business models, and in-depth and engaging gameplay. But POE trading andPOE Currencyis undoubtedly daunting for novices, and POECurrency.com offers a large number of POE Currency, including different outlets and links.MMOAH also has a different number of POE Currency packages, including POE Orbs, Exalted Orb, Chaos, Jeweler's Orb, Orb of Fusing and Orb of Regret. These usually include Worshiping Beads, Chaos Orbs, Sacred Orbs, Alchemy Orbs, Regrets, Pearls or Fusions, and their different combinations. Their website always provides the latest items, the transaction is convenient and safe, the details are cheap, and the delivery speed is breakneck! It is the advantage of its website and the reason their website has always attracted a large number of customers. less
-
Excellent! I thank you your blog post to this matter. It has... moreExcellent! I thank you your blog post to this matter. It has been insightful. my blog: maple syrup diet Fortune Rabbit Estratégia
-
Even nevertheless there are lots of decision methods with the... moreEven nevertheless there are lots of decision methods with the purpose of lookup used for non published numbers, but you would approximating rapid stately results to you possibly will look forward to in, you possibly will necessitate with the purpose of desire particular sort of swap telephone search company. joker123
-
Videography in Dubai is very popular for the travelers who... moreVideography in Dubai is very popular for the travelers who visit the place from outside world to explore the adventures hidden beneath the city. Following our expertise under the activities since last several years, we have gained mouth to mouth publicity along with milestone appearance in the world of internet as well. Accordingly, we prefer to get sighted by most of the renowned search engines whenever someone searches for best photographers in Dubai or best videographers in Dubai.
-
I think that on the Internet you can find everything you need.... moreI think that on the Internet you can find everything you need. There are many explaining articles and even videos. I often use this opportunity when in any game it is not entirely clear to me how the hero should act in this or that situation.
-
Equilibrium and kinetics of nitrous oxide, oxygen and nitrogen adsorption on activated carbon and carbon molecular sieveTo evaluate candidate adsorbents for the recovery of... moreEquilibrium and kinetics of nitrous oxide, oxygen and nitrogen adsorption on activated carbon and carbon molecular sieveTo evaluate candidate adsorbents for the recovery of nitrous oxide (N2O) from adipic acid off-gases, the equilibrium and kinetics of N2O and O2 adsorption on activated carbon pellets suppliersactivated carbon (AC) and of N2O, O2, and N2 adsorption on a carbon molecular sieve (CMS) were evaluated at 293, 308, and 323 K under pressures up to 1000 kPa using a high-pressure volumetric system. Adsorption amount of N2O on AC and CMS exceeded those of N2 and O2, and the adsorption isotherms for O2 and N2 were similar. The experimental N2O and O2 uptakes on AC and CMS were fitted to a non-isothermal adsorption model, whereas the model was ineffective for predicting N2 uptake on CMS. The isothermal dual-resistance model, considering surface barrier resistance and pore diffusion, adequately predicted N2 uptake on CMS. The rate of adsorption of N2O on AC was much lower than that of O2 and... less
Last post by robin jack - March 7, 2023
620 views
0 likes
-
Adsorption performance of coconut shell activated carbon for the removal of chlorate from chlor-alkali brine streamhttps://www.coconutactivatedcarbon.com/ Activated carbon from... moreAdsorption performance of coconut shell activated carbon for the removal of chlorate from chlor-alkali brine streamhttps://www.coconutactivatedcarbon.com/ Activated carbon from coconut shell was used to investigate the adsorption of chlorate from a chlor-alkali plant's brine stream. The effect of pH, flowrate, chlorate and chloride concentration on the breakthrough curves were studied in small-scale column trials. The results obtained show enhanced adsorption at low flowrates, higher chlorate concentrations, and at a pH of 10. These studies show that introducing an activated carbon adsorption column just before the saturator would remove sufficient quantities of chlorate to allow more of the chlor-alkali plant's brine stream to be reused. From column dynamic studies, the Thomas model showed close approximation when the chlorate in the effluent was higher than breakthrough concentrations and there was close correlation at high influent concentration. The qo (maximum adsorption capacity) values were... less
Last post by Faith Thomas - July 5, 2023
527 views
0 likes
-
2-Methylisoborneol (MIB) and geosmin are naturally occurring compounds responsible for musty-earthy taste and odor in public drinking-water supplies, a severe problem faced by... more2-Methylisoborneol (MIB) and geosmin are naturally occurring compounds responsible for musty-earthy taste and odor in public drinking-water supplies, a severe problem faced by many utilities throughout the world. In this study, we investigated adsorptive removal of these compounds by superfine powdered activation carbon ( powdered activated carbon (pac)SPAC, particle size <1 μm) produced by novel micro-grinding of powdered activated carbon; we also discuss the optimization of carbon particle size to efficiently enhance the adsorptive removal. After grinding, the absorptive capacity remained unchanged for a 2007 carbon sample and was increased for a 2010 carbon sample; the capacity increase was quantitatively described by the shell adsorption model, in which MIB and geosmin adsorbed more in the exterior of a carbon particle than in the center. The extremely high uptake rates of MIB and geosmin by SPAC were simulated well by a combination of the branched-pore kinetic model and the shell adsorption... less
Last post by Faith Thomas - July 5, 2023
842 views
0 likes
-
Diels-Alder reaction is a useful method for modifying the surface of carbon materials. activated carbon pellets suppliersIn this work, we functionalized activated carbon with a... moreDiels-Alder reaction is a useful method for modifying the surface of carbon materials. activated carbon pellets suppliersIn this work, we functionalized activated carbon with a large number of carboxyl groups using the Diels-Alder reaction. Polyaromatic structure of activated carbon acted as a diene for addition of maleic anhydride (MA) that acted as a dienophile. Upon hydrolysis of the anhydride group in the adduct, vicinal carboxyl groups were formed. The formation of carboxyl groups by Diels-Alder reaction was proved by FTIR, solid-state 13C NMR, CO and CO2 evolution from TPD and Boehm titration. Titration results showed that the number of carboxyl groups increased from 0.09 mmol g−1 to 3.06 mmol g−1. DFT calculation showed that the concave site of the armchair edge on carbon surface was the most favorable for the Diels-Alder addition. The formation of exo-adduct was preferred with a reaction energy (ΔE) of −24 kJ mol−1. The synthesized catalyst was tested for acid-catalyzed... less
Last post by robin jack - March 7, 2023
627 views
0 likes
-
Single-step pyrolysis for producing magnetic activated carbon from tucumã (Astrocaryum aculeatum) seed and nickel(II) chloride and zinc(II) chloride. Application for removal of... moreSingle-step pyrolysis for producing magnetic activated carbon from tucumã (Astrocaryum aculeatum) seed and nickel(II) chloride and zinc(II) chloride. Application for removal of nicotinamide and propanolol
The present research describes the synthesis of new nanomagnetic chengde wanyang activated carbon factory activated carbon material with high magnetization, and high surface area prepared in a single pyrolysis step that is used for the carbonization, activation, and magnetization of the produced material. The pyrolysis step of tucumã seed was carried out in a conventional tubular oven at 600 °C under N2-flow. It was prepared three magnetic carbons MT-1.5, MT-2.0, MT-2.5, that corresponds to the proportion of biomass: ZnCl2 always 1:1 and varying the proportion of NiCl2 of 1.5, 2.0, and 2.5, respectively. These magnetic nanocomposites were characterized by Vibrating Sample Magnetometer (VSM), X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, hydrophobic/hydrophilic... less
Last post by Faith Thomas - July 5, 2023
774 views
0 likes
-
Performance of mesoporous adsorbent resin and powdered activated carbon in mitigating ultrafiltration membrane fouling caused by algal extracellular organic matterThis paper... morePerformance of mesoporous adsorbent resin and powdered activated carbon in mitigating ultrafiltration membrane fouling caused by algal extracellular organic matterThis paper focused on the control of ultrafiltration (UF) membrane fouling caused by extracellular organic matter (EOM) extracted from Microcystis aeruginosa through pretreatment with mesoporous adsorbent resin (MAR) and powdered activated carbon (PAC) powdered activated carbon water treatment. The influence of MAR and PAC pretreatments on characteristics of EOM was investigated using molecular weight (MW) fractionation, DAX-8/XAD-4 resin fractionation and fluorescence excitation-emission matrix (EEM) spectroscopy. The results suggested that MAR mainly removed high-MW (> 100 kDa) fraction of EOM, while PAC primarily adsorbed low-MW (< 1 kDa) fraction. Both MAR and PAC adsorption removed more hydrophobic fraction than hydrophilic fraction. UF experiments were carried out to evaluate the efficacies of MAR and PAC pretreatments in EOM... less
Last post by robin jack - March 7, 2023
694 views
0 likes
-
Surface modification of coconut shell activated carbon for efficient solid-phase extraction of N-nitrosodimethylamine from water
A practical and cheap methodology in modifying... moreSurface modification of coconut shell activated carbon for efficient solid-phase extraction of N-nitrosodimethylamine from water
A practical and cheap methodology in modifying commercial coconut shell activated carbon for solid-phase extraction of N-nitrosodimethylamine in water was developed through an understanding of activated carbon surface chemistry.yongruida coconut carbon In comparison with commercial activated carbon, extraction recoveries by activated carbon treated with sulfuric acid decreased by 50%, while those of activated carbon heated at 800°C improved by more than 100%. Acid treatment increased the oxygen content on the carbon's surface. In contrast, heat treatment decreased the surface oxygen content, resulting in a more hydrophobic surface, which favoured adsorption and extraction of N-nitrosodimethylamine. The influence of different activated carbon sizes, amount of modified activated carbon, and pH on the N-nitrosodimethylamine recoveries was assessed and compared with the... less
Last post by Faith Thomas - July 5, 2023
620 views
0 likes
-
The cost-effective and energy-efficient removal of organic micropollutants (MPs) from water and wastewater is challenging. The objective of this research was to evaluate the... moreThe cost-effective and energy-efficient removal of organic micropollutants (MPs) from water and wastewater is challenging. The objective of this research was to evaluate the performance of porous β-cyclodextrin polymers (P-CDP) as adsorbents of MPs in aquatic matrixes. Adsorption kinetics and MP removal were measured in batch and flow-through experiments for a mixture of 83 MPs at environmentally relevant concentrations (1 μg L-1) and across gradients of pH, ionic strength, and natural organic matter (NOM) concentrations. Performance was benchmarked against a coconut-shell activated carbon yongruida coconut carbon (CCAC). Data reveal pseudo-second-order rate constants for most MPs ranging between 1.5 and 40 g mg-1 min-1 for CCAC and 30 and 40000 g mg-1 min-1 for P-CDP. The extent of MP removal demonstrates slower but more uniform uptake on CCAC and faster but more selective uptake on P-CDP. Increasing ionic strength and the presence of NOM had a negative effect on the adsorption of MPs to CCAC... less
Last post by robin jack - March 7, 2023
513 views
0 likes
-
The aim of this study is to investigate the effect of moisture on adsorption efficiency of hydrogen sulfide (H(2)S) by impregnated activated carbon (IAC).chengde wanyang activated... moreThe aim of this study is to investigate the effect of moisture on adsorption efficiency of hydrogen sulfide (H(2)S) by impregnated activated carbon (IAC).chengde wanyang activated carbon factory Copper(II) nitrate was used as an impregnant. Two humidification conditions of IAC, pre-moistened and gas stream containing moisture, were studied. The experimental results revealed that the copper species onto the IAC was suggested to be Cu(OH)(2) that deposited on activated carbon during the impregnation process. The adsorption mechanism of H(2)S by copper impregnated IAC was proposed, involving physic-sorption and chemical reactions. Moreover, the H(2)S breakthrough capacity decreased with increasing the relative humidity of gas stream. The causes were attributed to three points as follow: the competition adsorption occurred between moisture and H(2)S;wanyang carbon pellets the copper(II) species reduced to copper(I) species leading to IAC deactivation; and the rate of chemical reaction restrained by moisture. less
Last post by Faith Thomas - July 5, 2023
598 views
0 likes
-
Chinese traditional medicine wastewater, rich in macromolecule and easy to foam in aerobic biodegradation such as Glycosides, was treated by two identical bench-scale aerobic... moreChinese traditional medicine wastewater, rich in macromolecule and easy to foam in aerobic biodegradation such as Glycosides, was treated by two identical bench-scale aerobic submerged membrane bioreactors (SMBRs) operated in parallel under the same feed, equipped with the same electronic control backwashing device. One was used as the control SMBR (CSMBR) while the other was dosed with powdered activated carbon powdered activated carbon water treatment(PAC) (PAC-amended SMBR, PSMBR). The backwashing interval was 5 min. One suction period was about 90 min by adjusting preestablished backwashing vacuum and pump frequency. The average flux of CSMBR during a steady periodic state of 24 d (576 h) was 5.87 L/h with average hydraulic residence time (HRT) of 5.97 h and that of PSMBR during a steady periodic state of 30 d (720 h) was 5.85 L/h with average HRT of 5.99 h. The average total chemical oxygen demand (COD) removal efficiency of CSMBR was 89.29% with average organic loading rate (OLR) at 4.16 kg... less
Last post by robin jack - March 7, 2023
570 views
0 likes
-
Simultaneous removal and oxidation of arsenic from water by δ-MnO2 modified activated carbonyongruida active carbon The ubiquitous arsenic in groundwater poses a great risk to... moreSimultaneous removal and oxidation of arsenic from water by δ-MnO2 modified activated carbonyongruida active carbon The ubiquitous arsenic in groundwater poses a great risk to human health due to its environmental toxicity and carcinogenicity. In the present work, a new adsorbent, δ-MnO2 modified activated carbon, was prepared, and its performance for the uptake of arsenate and arsenite species from aqueous solutions was investigated by batch experiments. Various techniques, including FESEM-EDX, p-XRD, XPS and BET surface area analysis, were employed to characterize the properties of the adsorbent and the arsenic adsorption mechanisms. The results showed that δ-MnO2 covered on the surface and padded in the pores of the activated carbon. Adsorption kinetic studies revealed that approximately 90.1% and 76.8% of As(III) and As(V), respectively, were removed by the adsorbent in the first 9 hr, and adsorption achieved equilibrium within 48 hr. The maximum adsorption capacities of As(V) and As(III)... less
Last post by robin jack - March 7, 2023
538 views
0 likes
-
hsl abrasive refractory factoryStrengthening mechanisms of silicate glass by the inclusion of alumina particles of different volume fractions and different particle sizes are... morehsl abrasive refractory factoryStrengthening mechanisms of silicate glass by the inclusion of alumina particles of different volume fractions and different particle sizes are reported. The formulas of three responsible strengthening mechanisms, based on inclusion/crack interactions and interfacial elemental diffusion, were deduced; these include crack deflection, crack bridging and interdiffusion. The strength of the glass/alumina composites increased with inclusion fraction, but followed strengthening mechanisms that varied with alumina particle size. Crack deflection and bridging mechanisms dominated in strengthening for the glass/alumina (at mean particle size of 6 μm) composites while interdiffusion mechanism played a major role in the glass/alumina (at mean particle size of 1 μm) composites. The theoretical deduction of strengthening mechanisms depending on the particle size of alumina inclusions was demonstrated by the experimental strength data and fracture surface characteristics of the... less
Last post by robin jack - March 7, 2023
1,321 views
0 likes
-
Benzene, toluene and xylene (BTX) belong to an important group of aromatic volatile organic compounds (VOCs) that are usually emitted from various sources. BTX play a vital role... moreBenzene, toluene and xylene (BTX) belong to an important group of aromatic volatile organic compounds (VOCs) that are usually emitted from various sources. BTX play a vital role in the tropospheric chemistry as well as pose health hazard to human beings. Thus, an investigation of ambient benzene, toluene and xylene (BTX) was conducted at urban and rural sites of Gorakhpur for a span of one year in order to ascertain the contamination levels. The sampling of BTX was performed by using a low-flow SKC Model 220 sampling pump equipped with activated coconut shell charcoalhttps://coconutactivatedcarbon.com tubes with a flow rate of 250 ml/min for 20-24 h. The analysis was in accordance with NIOSH method 1501. The efficiency of pump was checked weekly using regulated rotameters with an accuracy of ±1%. The samples were extracted with CS2 with occasional agitation and analyzed by GC-FID. The total BTX concentration ranged from 3.4 μg m-3 to 45.4 μg m-3 with mean value 30.95 μg m-3 and median 24.8 μg... less
Last post by robin jack - March 7, 2023
826 views
0 likes
-
Simultaneous removal and oxidation of arsenic from water by δ-MnO2 modified activated carbon
The ubiquitous arsenic in groundwater poses a great risk to human health due to its... moreSimultaneous removal and oxidation of arsenic from water by δ-MnO2 modified activated carbon
The ubiquitous arsenic in groundwater poses a great risk to human health due to its environmental toxicity and carcinogenicity. In the present work, a new adsorbent, δ-MnO2 modified activated carbon,yongruida active carbon was prepared, and its performance for the uptake of arsenate and arsenite species from aqueous solutions was investigated by batch experiments. Various techniques, including FESEM-EDX, p-XRD, XPS and BET surface area analysis, were employed to characterize the properties of the adsorbent and the arsenic adsorption mechanisms. The results showed that δ-MnO2 covered on the surface and padded in the pores of the activated carbon. Adsorption kinetic studies revealed that approximately 90.1% and 76.8% of As(III) and As(V), respectively, were removed by the adsorbent in the first 9 hr, and adsorption achieved equilibrium within 48 hr. The maximum adsorption capacities of As(V) and As(III)... less
Last post by robin jack - July 6, 2023
866 views
0 likes
-
Research and industrialization progress of recovering alumina from fly ash: A concise review
Fly ash, a by-product of high temperature combustion of coal in coal-fired power... moreResearch and industrialization progress of recovering alumina from fly ash: A concise review
Fly ash, a by-product of high temperature combustion of coal in coal-fired power plants, is one of the most complex and largest amount of industrial solid wastes generated in China. Its improper disposal has become an environmental problem. Now it is widely realized that fly ash should be considered as a useful and potential mineral resource. Fly ash is rich in alumina, fused alumina manufacturer in indiamaking it a potential substitute for bauxite. With the diminishing reserves of bauxite resources, as well as the increasing demand for alumina, recovery of alumina from fly ash has attracted extensive attention world-wide. The present review describes, firstly, the generation and physicochemical properties of high alumina fly ash found in northern China and then focuses on the various alumina recovery technologies, the advantages and disadvantages of these processes, and in particular, the latest industrial... less
Last post by robin jack - March 7, 2023
738 views
0 likes
Forum Statistics
Topics
9477
Posts
49179
Total Users
45087
Active Users
5050
Share
