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peculiarities-of-crystallization-of-alumina-yttria-and-rare-earth-element-oxides-of-yttria-subgroup-in-an-optical-furnace

The peculiarities crystallization of alumina, https://hslabrasive.com yttria and the rare-earth element oxides of the yttria subgroup in an optical furnace have been studied. Direct evidence of oxygen dissolution during alumina melting in oxidizing atmosphere and its ejection during crystallization has been presented. The released oxygen was captured by the inside hollows of alumina ingots, and its quantity was controlled using gas chromatography. It was not less than 8 × 10−6 g in 1 g of…

effect-of-powdered-activated-carbon-addition-on-sludge-dewaterability-and-substrate-removal-in-landfill-leachate-treatment

The effect of powdered activated carbon (PAC)yongruida activated carbon powder addition on substrate removal and sludge dewaterability was investigated in the co-treatment of leachate and domestic wastewater in an activated sludge system. The ratio of leachate in the total wastewater varied from 5 to 25% on a volumetric basis. The inert COD in the leachate could be decreased to very low levels by PAC addition. The specific resistance to filtration (SRF) of the activated sludge peaked during the…

removal-of-chromium-crvi-by-low-cost-chemically-activated-carbon-materials-from-water

Low-cost, chemically activated carbonyongruida activated charcoal materials, Pellet-600 and PVA-300, were prepared at relatively low temperatures and show more effective removal efficiency of Cr(VI) from water than commercially available activated carbons tested. The Pellet-600 is a pelletized carbon material with high mesoporous volumes and surface area, and the PVA-300 is composed of a high surface area carbon coating on a fiberglass mat substrate. A much faster adsorption kinetics and a much…

isotherm-and-thermodynamic-studies-of-zn-ii-adsorption-on-lignite-and-coconut-shell-based-activated-carbon-fiber

The Zn (II) adsorption capacity of lignite and coconut shell-based activated carbon  coconut activated carbon goldfiber (ACF) was evaluated as a function of initial Zn (II) concentration, temperature and contact time in batch adsorption process in this study. Adsorption uptake increased with initial Zn (II) concentration and temperature. Optimal contact time for the adsorption of Zn (II) ions onto lignite and coconut shell-based ACF was found to be 50 min. Removal percentage decreased from 88.0%…

ammonium-aluminium-carbonate-hydroxide-nh4aloh2co3-as-an-alternative-route-for-alumina-preparation

Ammonium aluminium carbonate hydroxide NH4Al(OH)2CO3 as an alternative route for alumina preparation: Comparison with the classical boehmite precursorhslabrasive Ammonium aluminium carbonate hydroxide (AACH) is a promising alternative precursor for preparation of alumina with high purity and original textural properties. In this paper, both boehmite (classical alumina precursor) and AACH were precipitated in a stirred tank reactor with close process parameters. Preparation protocols were thus…

adverse-effects-of-inherent-cao-in-coconut-shell-derived-activated-carbon-on-its-performance-during-flue-gas-desulfurization

Activated carbon has been used commercially to remove SO2 from coal combustion flue gas. However, the role of inherent CaO in activated carbon is uncertain. In this study, the adverse effects of inherent CaO in the activated carbon derived from coconut shell (CSACcoconut shell activated carbon for gold mine on its desulfurization performance were systematically studied at the temperature range of 60-100 °C in a fixed-bed reactor. The solid sorbent samples were analyzed using scanning electron…

powdered-activated-carbon-coupled-with-enhanced-coagulation-for-natural-organic-matter-removal-and-disinfection-by-product-control

Powdered activated carbon coupled with enhanced coagulation for natural organic matter removal and disinfection by-product control: Application in a Western Australian water treatment plantpowdered activated carbon size The removal of organic precursors of disinfection by-products (DBPs), i.e. natural organic matter (NOM), prior to disinfection and distribution is considered as the most effective approach to minimise the formation of DBPs. This study investigated the impact of the addition of…

coupling-mechanism-of-activated-carbon-mixed-with-dust-for-flue-gas-desulfurization-and-denitrification

To clarify the effect of coking dust, sintering dust and fly ash on the activity of activated carbonlargest activated carbon manufacturers  for various industrial flue gas desulfurization and denitrification, the coupling mechanism of the mixed activated carbon and dust was investigated to provide theoretical reference for the stable operation. The results show that coking dust had 34% desulfurization efficiency and 10% denitrification efficiency; correspondingly, sintering dust and fly ash had…

original-carbon-based-honeycomb-monoliths-as-support-of-cu-or-mn-catalysts-for-low-temperature-scr-of-no-effects-of-preparation-variables

A series of catalysts consisting in Cu or Mn supported on lab-scale carbon-based honeycombhoneycomb active carbonmonoliths, which have been previously prepared following an original methodology, have been investigated in the low-temperature selective catalytic reduction of NO with NH3. Special attention has been paid to the effect of changing different preparative variables for the incorporation of the active phase: way of introducing the metal, concentration of the precursor solution and time…

natural-organic-matter-nom-and-pesticides-removal-using-a-combination-of-ion-exchange-resin-and-powdered-activated-carbon-pac

The combination of anion exchange resins (AERs) and powdered activated carbon (PAC) powdered activated carbon cost was studied to remove both natural organic matter (NOM) and pesticides. Experiments were conducted with high dissolved organic carbon (DOC) surface water (about 6.0 mg DOC/L) spiked with both atrazine and isoproturon. AERs, like MIEX® and IRA938®, showed up to 75% removal of DOC after 30 min contact time. The addition of PAC after treatment with these AERs only slightly decreased…

branched-pore-kinetic-model-analysis-of-geosmin-adsorption-on-super-powdered-activated-carbon

Super-powdered activated carbon (S-PAC) powdered activated carbon cost  is activated carbon of much finer particle size than powdered activated carbon (PAC). Geosmin is a naturally occurring taste and odor compound that impairs aesthetic quality in drinking water. Experiments on geosmin adsorption on S-PAC and PAC were conducted, and the results using adsorption kinetic models were analyzed. PAC pulverization, which produced the S-PAC, did not change geosmin adsorption capacity, and geosmin…

honeycomb-like-nitrogen-and-sulfur-dual-doped-hierarchical-porous-biomass-carbon-bifunctional-interlayer-for-advanced-lithium-sulfur-batteries

The nitrogen and sulfur dual-doped hierarchical porous biomass carbon honeycomb active carbon(NSHPC) is prepared by a simple and environment-friendly one-step method and employed as flexible interlayer for lithium-sulfur batteries (LSBs). The composition analysis and structure characteristic of NSHPC sample are measured by X-ray powder diffraction, scanning electron microscopy and Raman spectra. The electrochemical performances are measured by galvanotactic charge/discharge (GCD) and…

renewable-phenols-production-by-catalytic-microwave-pyrolysis-of-douglas-fir-sawdust-pellets-with-activated-carbon-catalysts

Renewable phenols production by catalytic microwave pyrolysis of Douglas fir sawdust pellets with activated carbon catalysts4mm air purification activated carbon pellets The effects of different activated carbon (AC) catalysts based on various carbon sources on products yield and chemical compositions of upgraded pyrolysis oils were investigated using microwave pyrolysis of Douglas fir sawdust pellets. Results showed that high amounts of phenols were obtained (74.61% and 74.77% in the upgraded…

three-dimensional-honeycomb-like-porous-carbon-strutted-nickel-phosphide-grown-by-analogous-gel-blowing-for-aqueous-asymmetric-supercapacitor

Hierarchically porous structures are attracting marvelous concern in energy storage system, due to their excellent electrons and ions transport properties that spring from the high-pitched surface area and opulent porosity.chengde wanyang activated carbon factory However, the existing scientific methods for synthesizing hierarchically porous materials usually require a template-assisted procedure, which is elaborate, time consuming and not attainable for mass production. Herein, a nickel nitrate…

adsorption-and-photocatalysis-kinetics-of-herbicide-onto-titanium-oxide-and-powdered-activated-carbon

The adsorption and photocatalysis kinetics of metsulfuron-methyl (MM) onto titanium oxide (TiO2) and powdered activated carbon (PAC)  www.powdered-activated-carbon.com were studied at varying adsorbent amount and MM concentration. The overall mass transfer in adsorption was estimated from concentration decay curves obtained in the batch adsorber. The maximum adsorption capacity decreased with increasing adsorbent amount in TiO2 adsorption. The adsorption isotherms of MM could be plotted using…

optimal-isotherm-parameters-for-phenol-adsorption-from-aqueous-solutions-onto-coconut-shell-based-activated-carbon-1

Optimal isotherm parameters for phenol adsorption from aqueous solutions onto coconut shell based activated carbon: Error analysis of linear and non-linear methods wholesale activated carbon pelletsRemoval of phenolic pollutants from wastewaters has become mandatory due to stringent environmental regulations and adverse effects on aquatic marine environment. Adsorption process which is most effective process to remove pollutants, hinders its applications in diverse field due to high cost of…

performance-enhancement-with-powdered-activated-carbon-pac-addition-in-a-membrane-bioreactor-mbr-treating-distillery-effluent

This work investigated the effect of powdered activated carbon (PAC) powdered carbon for sale addition on the operation of a membrane bioreactor (MBR) treating sugarcane molasses based distillery wastewater (spentwash). The 8 L reactor was equipped with a submerged 30 μm nylon mesh filter with 0.05 m2 filtration area. Detailed characterization of the commercial wood charcoal based PAC was performed before using it in the MBR. The MBR was operated over 200 days at organic loading rates (OLRs)…

honeycomb-monoliths-of-activated-carbons-for-effluent-gas-purification

During the incineration of urban waste incomplete mineralisation of some organic species can give rise to effluents contaminated with VOCs, furans and dioxins. www.wyactivatedcarbon.com These units produce large volumes of gas to be treated, but with low contents of these toxic species, for which the pressure drop caused by passing through a conventional pellet adsorption bed can be considerable. Another solution is to spray activated carbon powder into the contaminated effluent gas, although…

optimal-isotherm-parameters-for-phenol-adsorption-from-aqueous-solutions-onto-coconut-shell-based-activated-carbon

Optimal isotherm parameters for phenol adsorption from aqueous solutions onto coconut shell based activated carbon: Error analysis of linear and non-linear methodshttps://www.coconutactivatedcarbon.com Removal of phenolic pollutants from wastewaters has become mandatory due to stringent environmental regulations and adverse effects on aquatic marine environment. Adsorption process which is most effective process to remove pollutants, hinders its applications in diverse field due to high cost of…

artemisia-vulgaris-derived-mesoporous-honeycomb-shaped-activated-carbon-for-ibuprofen-adsorption

The purpose of the present work was to synthesize a novel mesoporous activated carbonwww.wyactivatedcarbon.comfrom an invasive weed to investigate its potential application for removal of the emerging organic contaminants in waters. The worldwide highly consumable non-steroidal anti-inflammatory drug (NSAID); ibuprofen (Ibu), was chosen for the study due to its toxicity and global occurrence in waters. Keeping this in mind, Artemisia vulgaris (common name: Mugwort) leaves were processed by…

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