Dealuminasi Zeolit Alam Menggunakan Asam (HCl dan H2SO4) untuk Katalis pada Proses Sintesis Biodiesel

Norvia, Sugiarti; Suhartana, Suhartana; Pardoyo, Pardoyo

doi:10.14710/jksa.19.2.72-76

Cited by 7 publications

(7 citation statements)

References 7 publications

(3 reference statements)

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“…It can occur due to the process of dealumination by H2SO4 which cause the disconnection of aluminum due to H + ions, thus affecting free electrons in O atoms to form coordination bonds. Al-O bonds will lack electrons so they will be more polar and not as strong as before so that Al will break from the bonds (Norvia et al, 2016). Increasing the Si / Al ratio will cause zeolites to have hydropobic (lipophilic) properties and absorb non-polar molecules, so they can be used as acid catalysts for hydrocarbons (Sa'diyah and Juliastuti, 2015).…”

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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“…Silika merupakan material yang banyak dimanfaatkan dalam bidang industri, contohnya yaitu sebagai material pembuatan chip, industri ban, karet, keramik, semen, elektronik, kosmetik, cat, film, pasta gigi, dan pembuat beton [7]. Silika juga dapat dimanfaatkan sebagai adsorben logam berat [8], campuran pupuk [9], dan prekursor sintesis zeolit [10]. Fungsi silika yang krusial tersebut harus diimbangi dengan ketersediaannya di alam.…”

Section: Pendahuluanunclassified

“…Oleh karena itu, sumber silika dari alam yang dapat diperbarui, salah satunya yaitu lumpur Panas Sidoarjo, lebih efektif digunakan untuk memangkas biaya produksi, serta ramah lingkungan. Zeolit yang berbahan baku silika ini bermanfaat sebagai katalisator biodiesel maupun biofuel [10].…”

Section: Silika Sebagai Prekursor Sintesis Zeolit-yunclassified

Analisis Kandungan Mineral dari Lumpur Panas Sidoarjo sebagai Potensi Sumber Silika dan Arah Pemanfaatannya

Ciptawati

Dzikrulloh

Septiani

et al. 2022

IJCA

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Lumpur panas Sidoarjo merupakan salah satu bencana luapan lumpur panas yang memiliki dampak signifikan di Indonesia terhitung sejak 29 Mei 2006. Adanya bencana ini banyak menimbulkan kerugian kesehatan, lingkungan hingga ekonomi. Akan tetapi,dibalik kerugian tersebut ternyata terdapat banyak kandungan mineral dalam lumpur luapan yang dapat dimanfaatkan sebagai contoh silika. Tujuan penelitian ini adalah mengetahui kandunganmineral terutama silika dalam lumpur panas Sidoarjo yang dapat berpotensi sebagai sumbersilika sintesis. Sampel diambil pada permukaan lumpur panas Sidoarjo dengan radius 500 m, 1000 m, dan 2000 m dari pusat semburan. Instrumen yang digunakan adalah XRF (X-Ray Fluorescence) dan XRD (X-Ray Diffraction) dimana sampel ditempatkan dalam sampleholder dan diradiasi menggunakan sinar-X. Berdasarkan uji XRF, pada masing-masing radius diperoleh kandungan silika sebesar 45,0% (radius 500 m), 45,3% (radius 1000 m), dan 43,3% (radius 2000 m) yang merupakan senyawa oksida dengan kandungan terbesar. Hasil uji XRD juga menunjukkan kesesuaian dengan hasil uji XRF, dimana fase yang paling dominan dalam lumpur panas Sidoarjo pada semua radius adalah fase kuarsa (SiO2). Berdasarkan kedua hasil ini, dapat disimpulkan bahwa kandungan mineral lumpur panas Sidoarjo pada 3 radius berbeda memiliki kandungan yang relatif sama dan dapat berpotensi sebagai sumber silika yang bermanfaat dalam bidang pangan, industri, hingga dalam bidang katalis.

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“…In this study, natural zeolites were used using HC1 and H2S 04 to be further used to improve the quality of domestic wastewater in the Tembalang subdistrict, Tembalang district, through the adsorption process. Previously we had done zeolite dealumination for biodiesel synthesis purposes [ 15 ]. Measurement parameters observed were chemical oxygen demand (COD), pH, biological oxygen demand (BOD), and total suspended solids (TSS) in the domestic wastewater.…”

Section: Introductionmentioning

confidence: 99%

Activation of Natural Zeolite and Its Application for Adsorbents in Domestic Wastewater Treatment in Tembalang District, Semarang City

Suhartana

Pardoyo

2020

J. Kim. Sains Apl.

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Tembalang is one of the districts in the city of Semarang whose economic growth is rapid. There are 12 sub-districts in Tembalang district, one of which is the Tembalang sub-district, which is within the campus area of Diponegoro University. When compared with other sub-district in the Tembalang district, the Tembalang sub-district community's need for clean water and domestic wastewater disposal is very high because of its dense population. Handling domestic wastewater is one of the environmental problems, which is interesting to study. Domestic wastewater, in addition to causing environmental pollution, can also cause discomfort and even health problems. One way to reduce the impact of domestic wastewater is to treat domestic wastewater before the environment is discharged. This study aims to describe the character of domestic wastewater in Tembalang sub-district, Tembalang district, Semarang city, and the use of activated zeolites and activated zeolites to reduce COD, pH, BOD, and TSS in domestic wastewater. Also, to compare the parameters of wastewater with regulations in force (Minister of Environment and Forestry Regulation No: 68 of 2016). This research is expected to improve the quality of domestic wastewater by adsorption using natural zeolite and activated zeolite adsorbents. The results showed that the adsorption treatment with natural zeolites and activated zeolites significantly improved water quality. The results of adsorption by natural zeolites showed a decrease in COD of 21.8%, a pH of 11.5%, BOD of 9.2%, and a TSS of 10.8%. Whereas adsorption by HCl-activated zeolite resulted in a decrease in COD of 78.9%, pH of 16.2%, BOD of 11.8% & TSS of 74.4%. While H2SO4-activated natural zeolite reduced COD by 85.5%, pH 17.9%, BOD 12.6% and TSS 89.7%.

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Dealuminasi Zeolit Alam Menggunakan Asam (HCl dan H2SO4) untuk Katalis pada Proses Sintesis Biodiesel

Cited by 7 publications

References 7 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

Analisis Kandungan Mineral dari Lumpur Panas Sidoarjo sebagai Potensi Sumber Silika dan Arah Pemanfaatannya

Activation of Natural Zeolite and Its Application for Adsorbents in Domestic Wastewater Treatment in Tembalang District, Semarang City

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