- Mon - Sat 8:00 - 18:00
- [email protected]
- 0086-21-58386256
Bauxites are deposits rich in aluminium and iron oxides/hydroxides, formed by the weathering of aluminosilicates rocks under warm and humid conditions. Due to their mineralogical composition, bauxites represent the primary source for aluminum and, subordinately, iron production. However, these sediments rich in Si and Al can be also used as raw material for …
Red mud (RM) and coal gangue (CG) are two kinds of industrial solid wastes. The former is produced in alumina production, and the latter is produced in coal mining and processing [17, 18].Generally, these industrial solid wastes can be regarded as raw materials for preparing zeolite [6].Moreover, there is a noticeable difference in that the n(Al:Si) of RM is …
Magnetic fly ash-based zeolites (MFZ) with good magnetic stability were in situ synthesized from fly ash (FA) modified by Fe3O4 after alkali fusion, hydrothermal treatment, and followed by reduction. The effects of the synthesis parameters of MFZ, such as the loading amount of Fe3O4, NaOH/FA ratio, and SiO2/Al2O3 molar ratio, were investigated as well as …
The zeolite 4 A powders were sustainably derived from clay-based waste contaminated with the spent lubricant oil.Then, the products were used to treat the wastewater discharged from a local zinc industry. The main challenge is removal of toxic organic components from the waste and conversion of obtained precursor to the zeolite structure, simultaneously.
The alkaline medium can dissolve iron and incorporate it into the zeolite matrix producing a different kind of zeolite [20]. A high iron content reduces the conversion efficiency [19], [20], [21]. To diminish the iron amount, the CFA is commonly pretreated by magnetic separation and acid treatments, [20], [22], [23].
A magnetic ZSM-5 zeolite with a core–shell type structure was synthesized, fully characterized and had its catalytic activity evaluated on the valorization of bio-derived furfuryl alcohol. ... A stable sustained production of GVL was achieved from the levulinic acid, with both high LA conversion (ca. 95%) and GVL yield (ca. 90%), for over at ...
CoFe 2 O 4 magnetic fluid (CMF) and zeolite 5A (Z 5) were prepared by reflux and hydrothermal synthesis, respectively.Then Z 5 was combined with different amounts of CMF to produce a magnetic zeolite 5A (MZ 5).MZ 5 was used to produce the magnetic copper type zeolite 5A (MCZ 5) by an ion-exchange method.Finally, an organic antibacterial agent was joined into the …
The kinetics of consolidation spent sorbent based on magnetic zeolite after adsorption saturation with cesium (∼23 wt %) under SPS conditions in the range of 700–950 °C was carried out. ... the unique industrial significance of SPS technology for the radionuclides-containing zeolites solidification to produce ceramics was also shown by ...
In this study, an operative technique was presented for the synthesis of the magnetically separable γ-Fe2O3@SiO2@ZIF8@Ag photocatalyst. The synthesized nanostructures were identified using various structural analyses, including XRD, EDX/SEM, FTIR, bandgap, and VSM. Their ability to remove norfloxacin (NOR) was then examined by studying …
Scheme 1 explains the enzyme immobilization steps including incorporation of Fe 3 O 4-NPs in to zeolite micropores with APTMS linker, activation of modified magnetic zeolite support by GA, enzyme immobilization on activated MAZE particles, and incorporation of MAZE particles into CMC composite. In brief, zeolite particles and Fe 3 O 4-NPs with a mass ratio of …
A novel and cost-effective approach was successfully developed for synthesizing high-performance zeolite 4A encapsulating magnetic particles (magnetic zeolite 4A) using kaolinite and red mud as raw materials via one-step combined activation-reduction and subsequent hydrothermal synthesis. The concurrent reduction of iron compounds in red mud …
The nanocomposite, zeolite/SnFe 2 O 4, was synthesized using a one-pot solvothermal technique.The synthesis process is detailed in Scheme 2.FeCl 2.4H 2 O (0.658 g) and SnCl 2 (0.314 g) were dissolved separately in 25 mL of ethylene glycol, while being stirred. The two solutions were then combined with a certain amount of zeolite (0.70 g) and stirred for …
A novel magnetic nano-zeolite (MNZ@MS) is successfully synthesized, characterized and applied to adsorp heavy metals from solution. In the synthesis of …
Fabrication of magnetic zeolite coated with carbon fiber using pyrolysis products from waste printed circuit boards. Author links open overlay panel Ruitong Gao a, Binyang Liu a, ... Besides, the production of pyrolysis products were enormous, which accounting for more than 30 percentage of WPCBs(Evangelopoulos et al., 2017; ...
This study is the first to use a new ZSM-5 zeolite-based composite decorated with iron oxide magnetic nanoparticles and modified with hexadecyltrimethylammonium bromide surfactant (i.e., HDTMA-ZSM ...
Zeolites were used as raw materials to produce magnetic metal-ceramic nanocomposites. ... One interesting alternative that has been subject of many studies is the incorporation of magnetic nanoparticles to zeolite crystals so that the formed composite can respond to an external magnetic field. In this review we have identified and organized the ...
A novel methodology is presented for the preparation of magnetic zeolite-based catalysts, allowing more efficient radiofrequency heating. These nanoreactors are tested in the …
A magnetic activated biochar-zeolite composite (MACZ) was produced and coated with polyethyleneglycol (PEG) and polyethylenimine (PEI) to produce (PMACZ) and enhance its electrostatic properties for the adsorption of 2 mu m and 15 mu m microplastics.
Three steps were employed to produce magnetic 4A-zeolite from red mud. The first step was based on reutilizing Al, Si and Fe components from red mud by using alkali fusion and acid leaching methods. Different mass ratios of red mud/NaOH were prepared, placed in a graphite crucible and calcined in a muffle furnace. ...
2005. In this research fly ash (FA) from Iran Ferrosilice Company was converted to zeolite A by hydrothermal procedure. The type and quality of produced zeolite depends on the composition of used FA, concentration of sodium hydroxide solution, and parameters such as temperature, reaction time and liquid/solid ratio.
However, the methane yield was not further improved when zeolite and magnetite were co-added, suggesting that co-adding zeolite and magnetite might not produce synergistic effects. Furthermore, the highest methane yield occurred in MZ group, which improved by 37.4% compared to that in CT group ( P < 0.05).
Subsequently, the product of the alkali fusion-synchronous reduction roasting process can next perform hydrothermal crystallization to produce magnetic zeolite A (MZA). …
nitrogen. The magnetic separation results showed that magnetic 4A zeolite exhibited fast response to external magnetic eld, and the saturation strength measured by VSM was 5.85 emu g−1, indicating the superparamagnetic properties of magnetic 4A zeolite. The removal rate of ammonia nitrogen by FSA-M-1 sample reached to 43.18%.
Two-dimensional Nuclear Magnetic Resonance. 1. Introduction. Lignin, available as a chemical asset, ... Using biomass templates could help reduce the overall cost of zeolite production, making hierarchical zeolites more economically viable for industrial applications; Secondly, the use of biomass templates during synthesis minimizes the need ...
Magnetic zeolite for drug adsorption and release. Magnetic nano/micro-particles have been prepared by incorporation of iron oxide Fe 3 O 4 (IO) nanoparticles into the CZ matrix to enhance their ...
Methane recovery from bio-wastes is one promising renewable energy to relieve the energy crisis faced around the world. Zeolite is one of attractive exogenous additives for promoting methane production from anaerobic digestion due to its potentials in regulating microorganism enrichment and anaerobic environment. However, the poor electron mediated …
Purified terephthalic acid (PTA) is widely used in industry as the main raw material for the production of polyester. However, the production process of PTA produces wastewater containing organic matter ... Magnetic zeolite is the combination of adsorption properties of zeolite with the magnetic properties of magnetic oxides which together ...
In an attempt to produce magnetic zeolite Al-ZSM-5, El-Din et al. synthesized Fe 3 O 4 nanoparticles from iron chloride solution containing nanozeolites, but the resulting materials consisted of a mixture of phases. Some methods involving the functionalization of the zeolites can help to improve some properties such as selectivity and reactivity.
Semantic Scholar extracted view of "Efficiency of Activated Natural Zeolite-Based Magnetic Composite (ANZ-Fe3O4) as A Novel Adsorbent for Removal of Cr(VI) from Wastewater" by Y. Neolaka et al. ... Indonesian Kesambi wood (Schleichera oleosa) activated with pyrolysis and H2SO4 combination methods to produce mesoporous activated carbon for …
Zeolite is a kind of good heavy metal absorbent, and the magnetic zeolite prepared based on zeolite has been used to the heavy metal in Adsorption water.The UV absorber of the magnetic zeolite that the people such as Yuan Mingliang deliver for 2009 on process engineering journal the 9th volume the 4th phase and to Pb 2+ absorption property in, adopt wet precipitation …