Synthesis of Natural Zeolite Adsorbent with Microwave-assisted Activation for CO2 Adsorption

Poerwadi, Bambang; Miranda, Farid Fadillah; Arini, Mutiara Dita; Oktavian, Rama; Zulhijah, Rizka

doi:10.21776/ub.rbaet.2017.001.01.01

Cited by 5 publications

(4 citation statements)

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“…The use of NaOH would cause the release of Si from the zeolite framework, and in higher NaOH conditions, it would cause the release of Al from the zeolite framework, which caused damage to the zeolite structure. This result supported the research conducted by Poerwadi et al (2017) that the use of high NaOH caused a substantial loss where the partial release of Al 3+ occurred, which caused a decrease in surface area. The activation process with NaOH also affected the shape of the zeolite surface morphological structure.…”

Section: Zeolite Activationsupporting

confidence: 89%

Synthesis of slow-release fertilizer with coconut shell biochar and activated natural zeolite for red onion (Allium ascalonium)

Permana,

Aulia,

Aziz

et al. 2023

J. Degrade. Min. Land Manage.

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<p>Using fertilizers is one of the efforts to increase crop productivity, but conventional fertilizers tend to be easily leached so it becomes ineffective. Slow-release fertilizer (SRF) is a modified fertilizer that releases nutrients slowly or gradually so that the use of fertilizer becomes more effective. SRF can be synthesized by mixing fertilizers with zeolite as a slow-release agent. Because natural zeolite contains many impurities that cover the pores of the zeolite, it is necessary to carry out an activation process to increase the pore capacity of the zeolite so that the process of absorption of nutrients in the SRF becomes more leverage. This study aimed to synthesize NPKSMg slow-release fertilizer with coconut shell biochar and activated natural zeolite for red onion plants (<em>Allium ascalonium</em>). Coconut shell biochar was used as a source of potassium. The activation process of natural zeolite was carried out by the desilication method using a basic solution of NaOH as an activator. Based on the results of research using activated natural zeolite on SRF, the surface structure of SRF became more porous, with a porosity percentage of 69.31%. In addition, the use of activated natural zeolites increased the absorption of nutrients in fertilizers. The use of biochar in SRF increased the percentage of porosity by 66.32%. The use of coconut shell biochar as a matrix and activated natural zeolite as a slow-release agent in SRF NPK S Mg for red onion plants has succeeded in increasing red onion yields.</p>

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Section: Zeolite Activationsupporting

confidence: 89%

Synthesis of slow-release fertilizer with coconut shell biochar and activated natural zeolite for red onion (Allium ascalonium)

Permana,

Aulia,

Aziz

et al. 2023

J. Degrade. Min. Land Manage.

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“…The XRD results show that 10-30 minutes of synthesis time using microwaves compared to using conventional heating produces high crystallinity with a short synthesis time due to the microwave heat transfer (radiation) process directly hitting the sample. This energy in the form of heat is able to increase the temperature of the object by providing force on the dipole molecules to rotate and the zeolite absorbs microwave radiation so that it can speed up the crystallization process (Anuwattana et al, 2008;Suryani and Candra, 2017;Poerwadi et al, 2017;Fuadi et al, 2013).…”

Section: Characteristics Of X-ray Diffraction (Xrd)mentioning

confidence: 99%

“…In conventional heating using an oven, the temperature of the reaction mixture is not uniform due to convection flows that occur during heating between the walls of the container and the solution. Meanwhile, when heating with a microwave , the temperature of the mixture is more uniform, the zeolite absorbs microwave radiation, resulting in faster and more efficient heating (Poerwadi et al, 2017).…”

Section: Characterization Of Zsm-5 By Using Bet (Brunaur Emmet and Te...mentioning

confidence: 99%

Synthesis of ZSM-5 From Natural Zeolite Lampung (ZAL) and Rice Husk by Seeding Method using Microwaves

Ginting,

Putri,

Miranda

et al. 2024

JBAT

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ZSM-5 can be synthesized from Lampung Natural Zeolite (ZAL) and rice husks as a source of additional silica. To speed up the synthesis time, ZSM-5 was synthesized using microwaves. Based on this, the synthesis of ZSM-5 was carried out using microwaves at a temperature of 140 oC with a power of 540 watts with time variations of 10, 15 and 30 minutes with the seeding method as a template replacement of 20%. Amorphous silica with a SiO2 content of 95.324% was extracted from rice husks with a suitable alkali solution. The influence of synthesis time on the formation of ZSM-5 has been carried out. The resulting product was characterized using X-ray Diffraction (XRD), and FTIR (Fourier-Transform-Infrared), Scanning Electron Microscopy (SEM) and BET (Brunaur, Emmet and Teller). The results of the analysis show that the results of the research show that the synthesis of ZSM-5 has been successfully carried out by changing the amorphous phase from natural Lampung zeolite and rice husks into ZSM-5 crystals using microwaves which can shorten the synthesis time 216 - 72 times faster than with heating. conventional, produces high crystallinity, provides small particle sizes with larger surface area, pore volume and pore diameter, and microwave radiation does not damage the Si-O bonds. The best sample was obtained at a synthesis time of 30 minutes with a crystallinity percentage of 96.76% and a specific surface area of 138.616 m2 /g.

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“…Microwave memiliki manfaat sebagai perangkat multilayer dengan kinerja elektroda listrik yang baik dengan menggunakan logam elektroda konduktif internal yang tinggi seperti perak dan tembaga [19]. Microwave juga memiliki kelebihan dibandingkan dengan pemanasan kovensional, antara lain lebih hemat energi, memanaskan campuran dalam waktu yang lebih cepat dan menghasilkan panas yang lebih beragam, serta material yang dipanaskan akan menyerap gelombang mikro yang tersebar [20].…”

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Synthesis And Characterization Of Carbon-Chitosan Composite Electrodes Based On Biomass Carbon Activated Using The Microwave Method

Nurdandi¹,

Aldila²,

Kurniawan³

2022

JRFI

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In this research, the synthesis and characterization of chitosan modified carbon composites based on biomass carbon has been carried out using the microwave method. Chemically activated carbon with 2.5% H3PO4 activator was stirred using a magnetic stirrer for 1 hour and allowed to stand for 24 hours. The carbon was then physically reactivated using a microwave for 20 minutes with a power variation of 800, 1000 and 1200 watts and a Scanning Electron Microscopy (SEM) test was carried out. After the SEM test, chitosan modified carbon was synthesized with a composition ratio of 1:1, 2:1 and 3:1 and the specific capacitance was measured using Galvanostatic Charge-Discharge (GCD) testing. The SEM test results analyzed using ImageJ software-based image processing methods show that the value of sphericity, pore size and carbon porosity decreases with increasing microwave power used. The optimum conditions based on the value of Sphericity, pore size and porosity were obtained at a variation of 800 watts of microwave power with values of 0.952, 0.832 m, and 25.87%, respectively, which were included in the macropore size (>50 nm). Because the higher the power used, the smaller the pore area and porosity. The electrode-specific capacitance values were 3.4 x 10-1 F/g, 24.02 F/g, and 1.3 x 10-1 F/g, respectively. Electrodes with a ratio of 2:1 have the largest capacitance value, because they can be charged by an electric charge. The longer the charge-discharge process, the greater the capacitance value, so the curve will approach a more symmetrical isosceles triangle shape.

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Synthesis of Natural Zeolite Adsorbent with Microwave-assisted Activation for CO2 Adsorption

Cited by 5 publications

References 0 publications

Synthesis of slow-release fertilizer with coconut shell biochar and activated natural zeolite for red onion (Allium ascalonium)

Synthesis of slow-release fertilizer with coconut shell biochar and activated natural zeolite for red onion (Allium ascalonium)

Synthesis of ZSM-5 From Natural Zeolite Lampung (ZAL) and Rice Husk by Seeding Method using Microwaves

Synthesis And Characterization Of Carbon-Chitosan Composite Electrodes Based On Biomass Carbon Activated Using The Microwave Method

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