Improving Ammonium Sorption of Bayah Natural Zeolites by Hydrothermal Method

Kurniawan, Teguh; Bahri, Saiful; Diyanah, Anita; Milenia, Natasya D.; Nuryoto, Nuryoto; Faungnawakij, Kajornsak; Thongratkaew, Sutarat; Bilad, Muhammad Roil; Huda, Nurul

doi:10.3390/pr8121569

Cited by 9 publications

(4 citation statements)

References 24 publications

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“…The result is aligned with another group that reported that Bayah natural zeolites were clinoptilolite dominant type, which was applied for converting glycerol to glycerol carbonate [19]. However, the present work's dominant zeolite phase is different from our previous investigation, which identi ed that Bayah natural zeolites were mordenite dominant type [20]. The diffraction pattern of natural zeolites was varied even samples obtained from the same mining district due to uncontrolled conditions during the zeolite synthesis in nature [21].…”

Section: Natural Zeolites Characterizationsupporting

confidence: 85%

Pyrolysis of Polyolefins into Chemicals Using Low-Cost Natural Zeolites

Irawan

Kurniawan²,

Nurkholifah³

et al. 2022

Waste Biomass Valor

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Massive production of disposable plastic that is not supported with proper plastic waste management has created an environmental problem. One solution that could be done to address this situation is by transforming plastics into chemicals through pyrolysis route. An experimental study of pyrolysis from polyethylene (PE) and polypropylene (PP) has been done by catalytic method and utilization of low-cost natural zeolite in a semi-batch reactor. A low-cost natural zeolite made from acid-treated zeolite with 1 M HCl solution denoted as HZ. The prepared HZ catalyst was then carried out under pyrolysis reaction at 350, 400, 450 o C for 60 minutes. The chemical products composition from this reaction was analyzed using Gas Chromatography-Mass Spectrometry (GC-MS). According to the analysis result, a low-temperature reaction of pyrolysis could produce wax in all variant types of feed. Utilization of HZ catalyst could reduce formation wax while also increasing the yield of oil products after the reaction. Catalytic pyrolysis using HZ for PE and PP plastic feed yields oil products up to 67% and 70%, respectively. The composition of oil products mainly consisted of para n, ole n, and alcohol compounds. The temperature optimum for the catalytic reaction could produce the highest para n and ole n products at 400°C. Additionally, utilization of low-cost natural zeolite could improve pyrolysis reaction's performance from PP to produce yield ole n products from 39-62%. Statement Of NoveltyPlastics waste is threatening the environment due to its di culty in degradation. Pyrolysis of plastic by using catalysts would improve the oil products. Natural zeolites are low-cost minerals and are abundantly available throughout the world. The novelty of this study is to investigate the local natural zeolites in Indonesia as a cost-effective catalyst for application in polyole ns pyrolysis. The oil yield and products selectivity improved signi cantly after using the natural zeolites. The oil composition identi ed would be potentially utilized as chemicals and fuels. Finally, the catalytic pyrolysis of plastic waste using low-cost local catalysts will overcome the environmental problem and create the circular economy of plastic.

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Section: Natural Zeolites Characterizationsupporting

confidence: 85%

Pyrolysis of Polyolefins into Chemicals Using Low-Cost Natural Zeolites

Irawan

Kurniawan²,

Nurkholifah³

et al. 2022

Waste Biomass Valor

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“…Figure 6 presents the SEM images of the parent and recrystallized samples at 170 o C. At the magnification of 3500×, the needle-like sharp fibres appeared and increased in numbers in the ZT 170 (pointed by the arrow) when compared to the Na-parent zeolite. The typical form of natural zeolite mordenite is a needle [34], and the SEM images clearly demonstrate the increasing amount of zeolite mordenite for the recrystallized samples (ZT 170). The H-Parent sample did not clearly show a needle-shaped crystal shape like the typical form of recrystallized natural zeolites.…”

Section: Morphology and Elemental Compositions Of Hydrothermally Modi...mentioning

confidence: 94%

“…A prolonged hydrothermal process might also completely convert the initial mordenite phase into other unwanted phases. Conversion of the mordenite phase into other phases is also affected by temperature and NaOH concentration [33,34].…”

Section: Characteristics Of Bayah Natural Zeolitesmentioning

confidence: 99%

Improved Natural Mordenite as Low-Cost Catalyst for Glycerol Acetalization into Solketal – An Effective Fuel Additive

Kurniawan

Nuryoto

Milenia

et al. 2022

MSF

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The increase in biodiesel production results in an excessive amount of crude glycerol by-product. Therefore, production of solketal –an effective additive of gasoline fuel-from glycerol and acetone via catalytic acetalization could improve the added value of glycerol. This study investigates enhancement of natural mordenite catalytic properties through the hydrothermal recrystallization method for glycerol acetalization. The hydrothermal temperature was varied at 150, 170 and 190 oC to form ZT 150, ZT 170 and ZT 190, respectively. The samples were characterized using the x-ray diffraction and the scanning electron microscope-Energy dispersive X-Ray. They were later used as catalysts for glycerol acetalization with acetone. The best obtained catalyst was further studied to explore the effect of acetone on glycerol ration. The glycerol conversion was deter-mined using the ASTM D7637-10 titration method. Solketal product was identified by using the Fourier transform infrared spectroscopy. The results show that the recrystallization temperature affects the intensity of the mordenite phase and quartz impurity phase in the modified zeolites. A high recrystallization temperature led to a higher phase of mordenite, peaking at 170oC, beyond which the quartz impurity phase increased. Glycerol acetalization conversions over zeolite parent, ZT 150, ZT 170 and ZT190 with acetone to glycerol ratio of 3 were 16.1%, 30.4%, 33.9% and 32.5%, respectively. When the ratio of acetone to glycerol was increased to 12, the glycerol conversion over ZT 170 catalyst reached 59%, a good starting point for further modifications. Overall finding demonstrated a straight-forward fabrication of catalyst from natural resource to enhance glycerol as the biodiesel production by-product into a higher value end-product of solketal.

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“…In this case, the commercial and environmental use of zeolite is almost unlimited. Zeolite can be applied to adsorption (Neolaka et al, 2017;2018;Kurniawan et al, 2020), ion exchange, and catalyst processes (Hudiyono et al, 2012;Kusuma et al, 2013;Yulizar et al, 2016;Król and Mozgawa, 2019). The adsorption process gained is a promising method for a long-term treatment and economically proven (Ariffin et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Indonesia’s Natural Zeolite as an Adsorbent for Toxic Gases in Shrimp Ponds

Anggoro¹,

Sumantri²,

Buchori³

2021

J. Ecol. Eng.

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The objective of this research was to produce safe water for shrimp by using zeolite as adsorbent to absorb unwanted substances (NH 3 and H 2 S). In particular, this study also aimed to design the shrimp pond water treatment equipment, effect of flow rate on zeolite ability to absorb toxic gases (NH 3 and H 2 S), and rate of absorption (K) and reaction (k). The adsorbent is zeolite which has adsorption properties, high surface area and pores suitable for water (3Å). Then, the concentration of ammonia, hydrogen sulfide was analyzed using Ammonia Test Kit and Hydrogen Sulphide of Hach Hydrogen Sulfide Test Kit. The materials used in this study were zeolite of Malang (East Java, Indonesia) and shrimp pond water. The best result of NH 3 and H 2 S adsorption obtained at a flow rate of 3 L•min -1 . The best adsorption constant value (K) achieved by a flow rate of 3 L•min -1 . On the basis of the best value of R 2 , NH 3 and H 2 S adsorption, it can be classified in the first-order kinetic model with R 2 of 0.9763 and a k value of 0.0007 hours -1 with a flow rate of 6 L•min -1 . From the data above, it can be calculated that the adsorbent needed in the adsorption of NH 3 and H 2 S in a scale shrimp pond requires 18 kg of Malang zeolite with a column height of 3.62 m of adsorbent, a diameter of 2.07 m, and a column volume of 12.21 m 3 .

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Improving Ammonium Sorption of Bayah Natural Zeolites by Hydrothermal Method

Cited by 9 publications

References 24 publications

Pyrolysis of Polyolefins into Chemicals Using Low-Cost Natural Zeolites

Pyrolysis of Polyolefins into Chemicals Using Low-Cost Natural Zeolites

Improved Natural Mordenite as Low-Cost Catalyst for Glycerol Acetalization into Solketal – An Effective Fuel Additive

Indonesia’s Natural Zeolite as an Adsorbent for Toxic Gases in Shrimp Ponds

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