Effect of Acid on Natural Zeolite Dealumination on Indigo Carmine Adsorption Capability

Sulistyowati, Nanik; Sriyanti, Sriyanti; Darmawan, Adi

doi:10.14710/jksa.21.2.102-106

Cited by 7 publications

(9 citation statements)

References 2 publications

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“…Zeolite damage caused by high concentrations of H2SO4 used in the activation process (Lestari, 2010). Termination of aluminum in the zeolite framework causes decrystallization which results in an increase of the amorphous phase of the zeolite (Sulistyowati et al, 2018). The results of XRD analysis added in figure 1 shows that some peaks at diffraction 2ϴ = 11.2 o , 13.4 o , 19.4 o , 19.6 o , 19.9 o , 21.9 o , 22.8 o , 23 o , 25.6 o , 26 , 3 o , 27.5 o had a higher intensity in the ZAB-1M sample compared to the ZAB-NA sample.…”

Section: Results and Discussion Zeolite Characterizationmentioning

confidence: 99%

Effect of Acid Concentration on the Activation of Bayah Natural Zeolite for Palm Kernel Shell Pyrolysis Application

Suhendi

Wibowo

Lestari

et al. 2020

Reaktor

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Biooil is the main product in the pyrolysis process which is expected to be a liquid fuel replacement solution. But the resulting biooil cannot be directly used as a result of high oxygenated compounds, high viscosity, corrosive, and unstable. Addition of activated natural zeolite catalyst to the pyrolysis process is expected to improve the quality of biooil in order to be used as a renewable liquid fuel. The research aims to determine the influence of acid concentrations on zeolite modification to the characteristics of pyrolysis products. Result of catalyst characterization indicates that zeolite activation using acid will increase Si/Al ratio as well as open the surface of previously hindered zeolite. The yield of char produced in this study tends not to undergo significant changes between the catalytic and noncatalytic pyrolysis by 33% wt. Addition of zeolite catalyst in pyrolysis proved to be able to increase the content of phenol and decrease the content of acetic acid in bio-oil by 6% . Meanwhile, yield of CO2 increases by 20% in the use of catalysts due to the release of oxygen in the oxygenate compounds. The results of this study showed that the resulting biooil still does not meet the specifications of liquid fuels but can be utilized as a renewable chemical feedstock.Keywords: pyrolysis; biomass; natural zeolite;modified

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Section: Results and Discussion Zeolite Characterizationmentioning

confidence: 99%

Effect of Acid Concentration on the Activation of Bayah Natural Zeolite for Palm Kernel Shell Pyrolysis Application

Suhendi

Wibowo

Lestari

et al. 2020

Reaktor

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“…Zeolite is one of the materials capable of adsorbing Pb. This is because zeolites contain a hydrate crystallinaluminosilicate compound with high cation exchange properties capable of exchanging ions [9]. Zeolite has been widely used in the waste treatment process.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of depuration with zeolite stone filter to reduce levels of heavy metal lead (Pb) in the feather shell (Anadara antiquata)

Shaleh,

Mubarak,

Tjahjaningsih

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Lead toxicity in humans causes neurological disorders, bone metabolism disorders, kidney damage, and impaired liver function. Feather shells that live in marine waters with high Pb heavy metal content can be exposed to these heavy metals, posing a risk to humans who eat shellfish. Depuration is one method that can reduce the Pb content in the body of the feather shell. The depuration process is influenced by several factors, including the length of the depuration and the filter used. This study aims to determine the effective depuration time to reduce the Pb content in feather shells (Anadara antiquata) using zeolite as a filter. This study applied the Latin Square Design (RSBL) method as a research design consisting of four treatments with four replications. The duration of the depuration treatment was 0 hours (P0), 24 hours (P1), 48 hours (P2), and 72 hours (P3). The effectiveness of the depuration of shells using a zeolite filter can be seen in the reduced Pb content in shellfish. The depuration process for 24 hours showed an effective depuration time with a reduction rate of Pb of 1.095 ± 0.05 mg/kg.

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“…Zeolite is used as an adsorber because of its regular amorphous structure with interconnected cavities in all directions, the ability to absorb small molecules, and a very large surface area. , Moreover, the ability of zeolites to exchange catalysts via cation adsorption is what makes them beneficial to be used as adsorber materials. , In addition, zeolite is also known as a porous material and has several practical uses, such as filters and absorbents of moisture. − The effect of zeolite adsorption is affected by the number and size of open pores on the zeolite surface . As a result, the activation process has a significant impact in determining the effectiveness of the zeolite capacity. , …”

Section: Introductionmentioning

confidence: 99%

“…19 As a result, the activation process has a significant impact in determining the effectiveness of the zeolite capacity. 20,21 Pahae-activated natural zeolite can absorb up to 53.82% of its weight in water. A previous study found that Pahae natural zeolite with a mesh size of 200 had a higher water vapor adsorption capacity than Cikalong natural zeolite.…”

Section: Introductionmentioning

confidence: 99%

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The Effectiveness of Pahae Natural Zeolite–Cocoa Shell Activated Charcoal Nanofilter as a Water Adsorber in Bioethanol Purification

et al. 2022

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Pahae natural zeolite potentially can be used as a filtration material because of its high adsorption capacity. However, it is known that other supportive materials such as activated charcoal are needed to optimize the utilization of natural zeolite as an adsorber. This study aims to investigate the potential use of activated charcoal which was synthesized from cocoa shells waste and natural zeolite in nanosize as the adsorber in order to increase the concentration of bioethanol. The mixing process of nanozeolite and activated charcoal of cocoa shells was carried out through mechanical mixing, while the nanofilter was made using a press-printing technique followed by sintering at several temperature variations. The results showed that the activated zeolite produced in this study has a particle size of 118.4 nm with water absorption capacity of 52.08%. In line with that, the bioethanol concentration was increased up to 78.92% during the adsorption with a 45 min contact time with water vapor. Thus, based on the results, it can be concluded that nanosized zeolite-based adsorbents and activated charcoal produced from cocoa shells can be utilized as adsorbers to significantly increase the concentration of bioethanol generated.

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Effect of Acid on Natural Zeolite Dealumination on Indigo Carmine Adsorption Capability

Cited by 7 publications

References 2 publications

Effect of Acid Concentration on the Activation of Bayah Natural Zeolite for Palm Kernel Shell Pyrolysis Application

Effect of Acid Concentration on the Activation of Bayah Natural Zeolite for Palm Kernel Shell Pyrolysis Application

Effectiveness of depuration with zeolite stone filter to reduce levels of heavy metal lead (Pb) in the feather shell (Anadara antiquata)

The Effectiveness of Pahae Natural Zeolite–Cocoa Shell Activated Charcoal Nanofilter as a Water Adsorber in Bioethanol Purification

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