Synthesis of Zeolite-X from Waste Porcelain Using Alkali Fusion

2010 ◽  
pp. 305-314
Author(s):  
Takaaki Wajima ◽  
Yasuyuki Ikegami
Keyword(s):  
Zeolite X ◽  
Alkali Fusion

scholarly journals Conversion of Waste Sandstone Cake into Crystalline Zeolite X Using Alkali Fusion

2010 ◽  
Vol 51 (5) ◽  
pp. 849-854 ◽  
Author(s):  
Takaaki Wajima ◽  
Kenzo Munakata ◽  
Yasuyuki Ikegami
Keyword(s):  
Zeolite X ◽  
Alkali Fusion

Synthesis of Zeolite from Blast Furnace Slag Using Alkali Fusion with Addition of EDTA

2014 ◽  
Vol 1044-1045 ◽  
pp. 124-127 ◽  
Author(s):  
Takaaki Wajima
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Zeolite A ◽  
Zeolite X ◽  
Alkali Fusion ◽  
Furnace Slag ◽  
Zeolitic Materials ◽  
Ethylenediamine Tetraacetate

A large amount of blast furnace slag, a by-product of the iron-making process, is generated annually. We attempted to convert blast furnace slag (BFS) into zeolitic materials using alkali fusion with ethylenediamine tetraacetate dihydrate (EDTA) chelation. Without addition of EDTA, a mixture of hydroxysodalite and calcite was synthesized. With EDTA addition, Ca2+ ions were trapped by chelation in solution during agitation, then the chelation was promoted by heating at synthesis, and zeolite-A, zeolite-X and hydroxysodalite were synthesized.

Synthesis of X- and A-Type Zeolites from Waste Stone Powder and Aluminium Dross Using Alkali Fusion

2021 ◽  
Vol 1023 ◽  
pp. 97-102
Author(s):  
Takaaki Wajima
Keyword(s):  
Room Temperature ◽  
Exchange Capacity ◽  
Industrial Wastes ◽  
Zeolite X ◽  
Effective Utilization ◽  
Aluminum Dross ◽  
Alkali Fusion ◽  
Aluminium Dross ◽  
Main Components ◽  
Zeolites A And X

Zeolites A and X, well-known as practical materials, were successfully synthesized with high cation exchange capacity (CEC) using two industrial wastes, waste crushed stone powder and aluminum dross, by alkali fusion treatment. Waste stone powder and aluminum dross are industrial wastes, and effective utilization of these wastes has been highly expected. Since the main components of the two wastes are Si, Al and O, those wastes can be used as starting materials for synthesis of zeolites. In this study, these industrial wastes were converted into crystalline zeolite-X and –A using alkali fusion. The stone powder, dross and the mixture of these wastes were transformed into a soluble phase via alkali fusion, and then agitated in distilled water at room temperature to give an intermediate gel-like solid, followed by synthesis at 80 °C to give the final product. The zeolites were successfully synthesized via the alkali fusion process, and selective synthesis of zeolites A and X was achieved by controlling the mixing ratio of aluminium dross to stone powder.

scholarly journals Synthesis of Zeolite X from Waste Sandstone Cake Using Alkali Fusion Method

2008 ◽  
Vol 49 (3) ◽  
pp. 612-618 ◽  
Author(s):  
Takaaki Wajima ◽  
Kazuharu Yoshizuka ◽  
Takashi Hirai ◽  
Yasuyuki Ikegami
Keyword(s):  
Fusion Method ◽  
Zeolite X ◽  
Alkali Fusion

scholarly journals Synthesis of X-Zeolite from Waste Basalt Powder and its Influencing Factors and Synthesis Mechanism

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3895
Author(s):  
Guojun Ke ◽  
Haichen Shen ◽  
Pengfei Yang
Keyword(s):  
Hydrothermal Method ◽  
Calcination Temperature ◽  
Crystallization Temperature ◽  
Acid Treatment ◽  
Alkali Basalt ◽  
Raw Material ◽  
Synthesis Process ◽  
Zeolite X ◽  
Synthesis Mechanism ◽  
Alkali Fusion

Traditional hydrothermal method (TH) and alkali fusion-assisted hydrothermal method (AFH) were evaluated for the preparation of zeolites from waste basalt powder by using NaOH as the activation reagent in this study. The synthesized products were characterized by BET, XRD, FTIR and SEM. The effects of acid treatment, alkali/basalt ratio, calcination temperature and crystallization temperature on the synthesis process were studied. The results showed that AFH successfully synthesized zeolite X with higher crystallinity and no zeolite was formed by TH. The specific surface area of synthetic zeolite X was 486.46 m2·g−1, which was much larger than that of original basalt powder (12.12 m2·g−1). Acid treatment and calcination temperature had no effect on zeolite types, but acid treatment improved the yield and quality of zeolite. Alkali/basalt ratio and crystallization temperature not only affected the crystallinity of synthesized zeolites but also affected its type. The optimum synthesis condition of zeolite X are as follows: acid treatment of 5 wt% HCl solution, NaOH/basalt ratio of 1:1, a calcination temperature of 650 °C and crystallization temperature of 120 °C. The work shows that basalt can be used as a raw material to prepare zeolite.

scholarly journals Synthesis of Zeolite from Fly Ash and Removal of Heavy Metal Ions from Newly Synthesized Zeolite

2010 ◽  
Vol 7 (4) ◽  
pp. 1200-1205 ◽  
Author(s):  
Parag Solanki ◽  
Vikal Gupta ◽  
Ruchi Kulshrestha
Keyword(s):  
Heavy Metal ◽  
Fly Ash ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Coal Fly Ash ◽  
Proximate Analysis ◽  
13X Zeolite ◽  
Alkali Fusion ◽  
Type Zeolite ◽  
The Cost

Coal fly ash was used to synthesize X-type zeolite by alkali fusion followed by hydrothermal treatment. Characteristics of the various Fly ash samples were carried out. Coal proximate analysis was done. Batch experiment was carried out for the adsorption of some heavy metal ions on to synthesized Zeolite. The cost of synthesized zeolite was estimated to be almost one-fifth of that of commercial 13X zeolite available in the market.

scholarly journals Silver quasi-nanoparticles: bridging the gap between clusters molecular-like and plasmonic nanoparticles

2021 ◽  
Author(s):  
Fatima Douma ◽  
Louwanda Lakiss ◽  
Oleg I. Lebedev ◽  
Julien Cardin ◽  
Krassimir L. Kostov ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Plasmonic Nanoparticles ◽  
Zeolite X ◽  
New Strategy ◽  
Type Zeolite ◽  
Optical Behavior ◽  
Silver Cations

Herein, we report a new strategy for preparing connected silver sub-nanoparticles with unique optical behavior via a selective photo-assisted electrochemical reduction of silver cations in FAU-type zeolite X (FAUX) cages....

scholarly journals Removal of organic pollutants from produced water by batch adsorption treatment

2021 ◽  
Author(s):  
Eman Hashim Khader ◽  
Thamer Jassim Mohammed ◽  
Nourollah Mirghaffari ◽  
Ali Dawood Salman ◽  
Tatjána Juzsakova ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Produced Water ◽  
Oxygen Demand ◽  
Powdered Activated Carbon ◽  
Pollutant Removal ◽  
Operating Conditions ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Zeolite X

AbstractThis paper studied the adsorption of chemical oxygen demand (COD), oil and turbidity of the produced water (PW) which accompanies the production and reconnaissance of oil after treating utilizing powdered activated carbon (PAC), clinoptilolite natural zeolite (CNZ) and synthetic zeolite type X (XSZ). Moreover, the paper deals with the comparison of pollutant removal over different adsorbents. Adsorption was executed in a batch adsorption system. The effects of adsorbent dosage, time, pH, oil concentration and temperature were studied in order to find the best operating conditions. The adsorption isotherm models of Langmuir, Freundlich and Temkin were investigated. Using pseudo-first-order and pseudo-second-order kinetic models, the kinetics of oil sorption and the shift in COD content on PAC and CNZ were investigated. At a PAC adsorbent dose of 0.25 g/100 mL, maximum oil removal efficiencies (99.57, 95.87 and 99.84 percent), COD and total petroleum hydrocarbon (TPH) were identified. Moreover, when zeolite X was used at a concentration of 0.25 g/100 mL, the highest turbidity removal efficiency (99.97%) was achieved. It is not dissimilar to what you would get with PAC (99.65 percent). In comparison with zeolites, the findings showed that adsorption over PAC is the most powerful method for removing organic contaminants from PW. In addition, recycling of the consumed adsorbents was carried out in this study to see whether the adsorbents could be reused. Chemical and thermal treatment will effectively regenerate and reuse powdered activated carbon and zeolites that have been eaten. Graphic abstract

Crystal structures of fully dehydrated fully Sr2+-exchanged zeolite X and of its ammonia sorption complex

1999 ◽  
Vol 30 (2-3) ◽  
pp. 233-241 ◽  
Author(s):  
Mi Jung Kim ◽  
Mi Suk Jeong ◽  
Yang Kim ◽  
Karl Seff
Keyword(s):  
Crystal Structures ◽  
Zeolite X
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