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Coconut shell charcoal, 6-12 mesh, 8-16 mesh) to make 5 types of activated carbon purification net

Objective: To study the effect of activated carbon[url=https://www.coconutactivatedcarbon.com/]coconut activated charcoal[/url] on the purification of formaldehyde in the clean workshop return air purification device and its influencing factors. Methods: From May to June 2018, choosed 4 different commercial activated carbons (bamboo charcoal, 1-3 mm, 3-5 mm; coconut shell charcoal, 6-12 mesh, 8-16 mesh) to make 5 types of activated carbon purification net. In the simulated clean plant laboratory, the detection of occupational disease hazards was used to test the purification effect of different types of activated carbon purification nets on formaldehyde. Results: The purification effect of different types of activated carbon increased with the prolongation of purification time, and the difference was statistically significant (P<0.05) . Compared with other types of activated carbon, coconut shell charcoal (8-16 mesh, double layer) had the best purification effect, 15 min and 30 min purification efficiency was 58.72% and 85.20% respectively, and the difference was statistically significant (P<0.05) . The purification effect of double-layer coconut shell charcoal was better than single layer (P<0.05) . The purification effect of double-layer coconut shell charcoal (8-16 mesh) was better than double-layer coconut shell charcoal (6-12 mesh) , the difference was statistically significant (P<0.05) . Coconut shell charcoal (8-16 mesh, double layer) had better purification effect than bamboo charcoal (P<0.05) . [url=https://www.activated-carbon-pellets.com/]www.activated-carbon-pellets.com[/url] Conclusion: Different specific surface area, particle size, and thickness of activated carbon have a certain effect on the purification effect of formaldehyde, and its selection has a certain significance in improving the occupational health protection level in the clean plant, solving the safe use of return air and reducing energy consumption.

Diclofenac removal from water by photocatalysis- assisted filtration using activated carbon modified with N-doped TiO2

The aim of this study was to develop powdered and granular activated carbon modified with N doped TiO2, namely[url=https://www.yrdcarbon.com/products/activated-carbon/powdered-activated-carbon.html]powdered activated carbon water treatment[/url] PAC-TiO2N and respective, GAC-TiO2N by sol-gel method, starting from commercial activated carbon, for the removal from water of diclofenac (DCF), an emerging pollutant. The synthesized materials were characterized systematically and morphostructural, light absorption and electrical charge properties were determined. The sorption and photocatalytic capacities of both materials were determined by batch experiments based on the kinetic models and the effect of operational parameters. GAC-TiO2N was selected for further testing in fixed bed-column experiments envisaging its potential integration with real drinking water treatment technology. The GAC-TiO2N tested in UV irradiation-assisted fixed bed-column filtration for DCF removal exhibited a great potential for practical application, by testing in simulated coexisting DCF and humic acids (HAs) and real surface water spiked with DCF (Bega River, Timisoara city, Romania). About 80% removal efficiency was noticed for both DCF and HAs and about 70% of the organic matter was removed (expressed as total organic carbon- TOC indicator). UV irradiation during filtration allowed the activation of the [url=https://www.yrdcarbon.com/products/]activated carbon suppliers in india[/url]GAC-TiO2N filtration layer without TiO2 loss, which led to longer life-times due to the potential “self-cleaning” effect and its good stability.

Two sorbents - coconut shell charcoal (CSC) and styrene-divinylbenzene resin (XAD-2) - were evaluated while collecting substances

A novel dynamic approach is described to profile volatile organic compound (VOC) and semi-VOC (SVOC) emission during coffee roasting aimed at analysing components present in the roasting plume, and to monitor their evolution during the process. Two sorbents - coconut shell charcoal (CSC[url=https://www.coconutactivatedcarbon.com/]https://coconutactivatedcarbon.com[/url]and styrene-divinylbenzene resin (XAD-2) - were evaluated while collecting substances in four sequential time intervals (0-3, 3-6, 6-9 and 9-12 min). Extracted VOCs (<200 Da) and SVOCs were analysed by gas chromatography (GC), and comprehensive two-dimensional gas chromatography (GC × GC) with flame ionisation (FID) and time-of-flight mass spectrometry (TOFMS) detection. Results showed CSC extraction presented poor recovery of VOCs and SVOCs released during roasting. However, XAD-2 was able to collect both groups, including SVOCs of >400 Da. GC × GC resolved many co-eluting compounds observed in 1D GC and allowed chemical group type cluster analysis, revealing that many non-polar VOCs are observed within the 0-3 min interval, and that the release of polar and higher molar mass SVOCs were mostly found within the 3-6 min interval. [url=https://www.activated-carbon-pellets.com/]activated carbon pellets aquarium[/url]These group-type cluster analyses offer a broad spectrum chemical profile of the released substances. It may also reveal detailed insights into the roast process evolution over time.

The structure of ion beam sputtered amorphous alumina films and effects of Zn doping: High-resolution 27Al NMR

Amorphous[url=https://www.hslabrasive.com/products/fused-alumina/]fused alumina manufacturer in india[/url] aluminum oxide thin films have widespread technological applications, potentially including multilayer optical coatings in large-scale instruments such as the Laser Interferometric Gravitational Wave Observatory (LIGO). However, the short-range structures of such materials, especially when other components are added, are poorly known. Here we present high-field, high resolution 27Al MAS NMR data on thin film samples of Zn-doped amorphous alumina deposited by ion beam sputtering (IBS). Samples with about 1% and 10–20% Zn both contain mixtures of four-, five-, and six-coordinated Al. The former is dominated by the lower coordinations and is remarkably similar to that recently reported for pure amorphous alumina formed by very different methods of deposition. A common, initially high-energy, “liquid-like” state may be suggested. In contrast, the structure of an X-ray amorphous high Zn alumina film contains mostly six-coordinated Al, with short range order resembling that of crystalline α-Al2O3 and/or ZnAl2O4 spinel. [url=https://www.hslabrasive.com/]hsl abrasive refractory factory[/url]Here, the role of the dopant cation may be to speed up dynamics of local structural relaxation toward that of the equilibrium crystals.

Dissolving the high-cost with acidity: A happy encounter between fluidized struvite crystallization and wastewater from activated carbon manufacture

Production of wood-based[url=https://www.yrdcarbon.com/products/activated-carbon/]activated carbon bulk australia[/url]activated carbon (WAC) generates large volume of highly acidic and phosphate-rich wastewater. Currently, the routine treatment (i.e. lime precipitation) creates significant secondary pollution, leading to extra economic and environmental burdens. Here, by exploiting the strong acidity of WAC wastewater, we successfully demonstrate fluidized struvite crystallization as a low-cost treatment alternative. Based on a 12 m3/d on-site pilot-scale system, four different fluidized struvite crystallization scenarios are evaluated from technical, economic, and environmental perspectives. The results show that using MgO with MgCl2 supplement saves 42.8% of the reagent cost when treating phosphate-rich wastewater (i.e. P = 3125.2 mg/L), and also maintains ideal P removal rate and struvite product purity. Meanwhile, the internal circulation mode exhibits higher P recovery (99.2%) than the external mode (55.3%-89.3%), while also demonstrates superior economic and environmental benefit because of less chemical consumption. In addition, the struvite morphology can be turned between pellets with strong crushing strength (external mode) to powder (internal mode). By Life cycle cost (LCC) analysis, we find that, on a treatment scale of 500 m3/d, struvite-based technology saves up to 31.33 million Chinese Yuan (CYN) during a 20-year lifespan, with relative payback period of 2.60 year. [url=https://www.yrdcarbon.com/]yongruida active carbon[/url]The technical, economic, and environmental assessments confirm that the struvite technology is a promising alternative in solving the bottleneck of WAC wastewater treatment.

Pitch-Derived Activated Carbon Fibers for Emission Control of Low-Concentration Hydrocarbon

The unburned hydrocarbon (HC) emissions of automobiles are subject to strong regulations because they are known to be converted into fine dust, ozone, and photochemical smog. Pitch-based [url=https://www.yrdcarbon.com/]www.yrdcarbon.com[/url]activated carbon fibers (ACF) prepared by steam activation can be a good solution for HC removal. The structural characteristics of ACF were observed using X-ray diffraction. The pore characteristics were investigated using N2/77K adsorption isotherms. The butane working capacity (BWC) was determined according to ASTM D5228. From the results, the specific surface area and total pore volume of the ACF were determined to be 840-2630 m2/g and 0.33-1.34 cm3/g, respectively. The butane activity and butane retentivity of the ACF increased with increasing activation time and were observed to range between 15.78-57.33% and 4.19-11.47%, respectively. This indicates that n-butane adsorption capacity could be a function not only of the specific surface area or total pore volume but also of the sub-mesopore volume fraction in the range of 2.0-2.5 nm of adsorbents. The ACF exhibit enhanced BWC, and especially adsorption velocity, compared to commercial products (granules and pellets), with lower concentrations of n-butane due to a uniformly well-developed pore structure open directly to the outer surface.[url=https://www.yrdcarbon.com/products/activated-carbon/]activated carbon pellets bulk[/url]

Biochar derived from sugarcane bagasse, coconut shell, corncob

This study evaluates the use of engineered biochar as a heterogeneous solid acid catalyst for transesterification of algal oil derived from a native microalgal consortium. Biochar derived from sugarcane bagasse, [url=https://www.coconutactivatedcarbon.com/]yongruida coconut activated carbon[/url]coconut shell, corncob and peanut shell were evaluated for catalytic activity following surface modification. Peanut shell pyrolyzed at 400 °C with the sulfonic acid density of 0.837 mmol/g having 6.616 m2/g surface area was selected for efficient catalysis. The efficiency of transesterification was evaluated with 1-7 wt% catalyst loading, methanol: oil ratio of 6:1 to 30:1 at 55-85 °C over 2-8 h. Biodiesel yield of 94.91% was obtained with 5 wt% catalyst loading, MeOH: oil ratio of 20:1 at 65 °C after 4 h. Spectral analysis of algal biodiesel showed the presence of functional groups corresponding to esters.[url=https://www.activated-carbon-pellets.com/]bulk activated carbon suppliers[/url] GC-MS analysis revealed the prominent presence of palmitic and oleic acids, further advocating the suitability of the technology for commercial application.

Photocatalytic properties of mesoporous alumina containing Ni doped CdS nanostructures

A stable and visible light responsive photocatalyst, Ni doped CdS dispersed on mesoporous Al2O3, exhibits enhanced photocatalytic activity for methyl orange (MO) degradation compared to CdS-Al2O3, CdS and Ni doped CdS. A significant adsorption of MO is observed in mesoporous alumina[url=https://www.hslabrasive.com/]visit hslabrasive.com[/url]and the composite. Solid state MAS NMR studies suggest a strong interaction between CdS and Al2O3 in this new combination of heterostructured photocatalyst. This interaction between CdS and Al2O3 helps in a good dispersion of CdS on alumina, which in turn enhances the photocatalytic activity. In the composite, CdS shows wurtzite type structure where as Al2O3 (γ-Al2O3) shows cubic spinel structure. Ni doped CdS-Al2O3 nanocomposite shows improved visible light absorption compared to undoped CdS. Photoelectrochemical studies suggest that better separation of charge carriers occurs in 1Ni-CdS and 1Ni-85CA compared to CdS. The enhanced activity of Ni doped composite nanostructure is attributed to increased adsorption of MO in the composite, increased surface area, better separation of photogenerated charge carriers and improved visible light absorption. Total organic carbon analysis of the dye solution after irradiation indicates the mineralization of the dye during photocatalytic reaction.[url=https://www.hslabrasive.com/products/fused-alumina/]alumina fused[/url] Photodegradation in the presence of different quenchers suggests that e− plays a significant role in the degradation of methyl orange.

Coconut shell biochar (CSB) was modified by a solution of FeCl3

To remove NO3-N from water, [url=https://www.coconutactivatedcarbon.com/]coconut shell activated carbon sale[/url]coconut shell biochar (CSB) was modified by a solution of FeCl3, a solution of AlCl3 and a mixture solution of FeCl3 and AlCl3 respectively. The obtained modified biochar with the best effect of NO3-N adsorption was screened out to explore the adsorption behavior and mechanism of NO3-N removal by batch experiments and kinetics and thermodynamics and correlated characterization. The results indicated that the mixture solution of FeCl3- and AlCl3- modified CSB (Fe-Al/CSB) showed the best adsorption performance for NO3-N removal. Iron and aluminum elements existed on the surface of Fe-Al/CSB in the form of FeOOH, Fe2O3, Fe2+, and Al2O3 respectively. The adsorption process could reach equilibrium in 20 min. An acidic condition was favorable for NO3-N adsorption. The presence of coexisting anions was not conducive for NO3-N adsorption. The quasi-second-order model and Freundlich model could be well fitted in the adsorption process. The maximum adsorption capacity of Fe-Al/CSB fitted by the Langmuir model could reach 34.20 mg/g.[url=https://www.activated-carbon-pellets.com/]http://www.activated-carbon-pellets.com[/url] The adsorption of NO3-N by Fe-Al/CSB was an endothermic and spontaneous process. Ligand exchange and chemical redox reaction were the NO3-N adsorption mechanisms which led to NO3-N adsorption by Fe-Al/CSB.

Precursor suitability and pilot scale production of super activated carbon for greenhouse gas adsorption and fuel gas storage

Raw and calcined petroleum cokes of Indian origin were characterized and screened as a carbon precursor for the preparation of[url=https://www.wyactivatedcarbon.com/]activated carbon supplier[/url]activated carbon on medium and pilot scale by chemical activation method. Raw petroleum coke (RPC) was found more suitable precursor for preparation of activated carbon, whereas the enhanced graphitic arrangement limits the applicability of calcined petroleum coke. The suitability of petroleum coke as activated carbon precursor was correlated with its physical properties. Super activated carbon (SAC) obtained from RPC exhibited very high specific surface area (3578 m2 g−1) with ultra-microporosity ranges from 0.4 to 0.7 nm. The equilibrium adsorption of CO2, CH4, CO, and N2 measured on powder SAC at different temperatures evidenced its applicability for gas separation through high adsorption capacity and selectivity. SAC also showed the high fuel gas storage capacity, H2 (26.67 mmol g−1 at 77 K and 3000 kPa) and CH4 (10.87 mmol g−1 at 303 K and 3700 kPa) due to its high specific surface area and microporous textural property. The production of SAC was also demonstrated for pilot scale and examined for CH4 storage. The transformation of powder SAC into pellets using bentonite clay as a binder to provide better mechanical strength with enhanced CH4 adsorption (on a volume basis) made it viable for practical application.[url=https://www.wyactivatedcarbon.com/products/activated-carbon-pellets/]wanyang activated carbon pellets[/url]


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