Pumice Characteristics and Their Utilization on the Synthesis of Mesoporous Minerals and on the Removal of Heavy Metals

Ismail, A. I. M.; El-Shafey, Ola I.; Amr, Mohey H. A.; El-Maghraby, M. S.

doi:10.1155/2014/259379

Cited by 24 publications

(13 citation statements)

References 19 publications

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“…The elements bound with oxygen include Al, Si, Fe, Ca, K, Na, and Mg in Al2O3, Fe2O3, SiO2, CaO, K2O, Na2O and MgO. The identified elements are similar to Yaltay et al [24] and Ismail et al [25] research results, except for the composition of each element in the pumice sample due to differences in local geological processes of the pumice formation. As know that pumice came from volcanic eruptions, so the magma source and evolution of the crystallization process could be the reason for the difference in the elemental content and its composition [26,27].…”

Section: Composition Of Pumice Elementssupporting

confidence: 78%

Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

et al. 2022

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The linear attenuation coefficient (LAC), mean free path (MFP), half-value layer (HVL), and the radiation protection efficiency (RPE) parameters of Lombok pumice powder from 3 different regions (Ijobalit, Setangi beach, and Lingsar) have been analyzed. The radiation parameter analysis was carried out to determine the pumice that potential as a raw material of radiation shielding composite. The Monte Carlo simulation using the GEANT4 toolkit was applied to analyze those parameters using a gamma-ray transmission measurement for the photon energies of 57Co, 133Ba, 54Mn, 137Cs, 60Co, 65Zn, 22Na and 40K. The GEANT4 simulation results were compared to the XCOM theoretical calculation and show that the linear attenuation coefficient parameter has a good agreement with the XCOM results based on the determination coefficient of the correlation graph (R2 = 0.998) between those 2 approaches methods. Setangi beach pumice has a smaller LAC parameter than Ijobalit pumice and Lingsar pumice. The MFP and HVL parameter of the Setangi beach pumice indicate the absorption ability of gamma photons is low. In the low gamma energy 0.122 MeV, Ijobalit pumice and Lingsar pumice have more than 50 % RPE and are better used as a raw material of radiation shielding composite. HIGHLIGHTS New lead-free shielding materials of radiation becomes a critical concern in the investigation of raw shielding material GEANT4 Monte Carlo simulation and XCOM theoretical calculation was conducted to analyse the radiation LAC parameter Radiation parameters analysis of Lombok Pumice show that Ijobalit pumice and Lingsar pumice have more than 50 % RPE and are better used as a raw material of radiation shielding composite GRAPHICAL ABSTRACT

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Section: Composition Of Pumice Elementssupporting

confidence: 78%

Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

et al. 2022

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“…Pumice is composed of XRD-amorphous silicate minerals with a porous structure (Ismail, El-Shafey, Amr, & El-Maghraby, 2014;Sepehr, Amrane, Karimaian, Zarrabi, & Ghaffari, 2014). FTIR spectra of natural pumice commonly indicates the stretching and bending of Si-O-Si from (SiO4) 2− groups, stretching vibration of -OH groups and H2O molecules in the lattice, and vibration of H-O-H bond of lattice water molecules (Sepehr et al, 2014(Sepehr et al, , 2013.…”

Section: Discussionmentioning

confidence: 99%

Potential Use of Alkaline-Activated Indonesian Pumice Powder as Lead Adsorbent in Solution System

Hasanah¹,

Anwar²,

Hartono³

et al. 2019

Sains Tanah J. Soil Sci. Agroclimatology

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Pumice is a volcanic material that found abundant in Indonesia. Owing to its physicochemical characteristics it can be utilized as a low-cost natural adsorbent for cationic contaminants. This study aimed to assess the performances of adsorbents prepared from NaOH-activated powder of Lombok and Kediri pumices for lead removal in solution systems based on their maximum adsorption capacity and removal efficiency parameters. The adsorption tests were done in batch experimentation using pumice powder of 74 μm particle size activated with 0.5, 1, and 2 M NaOH and lead solutions with initial concentrations of 0-260 mg.L-1. The most favorable NaOH activation concentration for both pumices was 0.5 M which resulted from Lombok pumice prepared-adsorbent with Pb maximum adsorption capacity based on linearized conventional and rearranged Langmuir isothermal adsorption models of 236.4 and 186.3 mg.g-1, while those of Kediri pumice were of 218.4 and 210.8 mg.g-1, respectively. The removal efficiency of both adsorbents were >80% at the initial Pb concentration of <100 mg.L-1 and around 50-80% at 100-260 mg.L-1. Both pumices are therefore considered potential to be utilized as an adsorbent for cationic contaminants in solution systems with reliable performances.

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“…Struktur dasar zeolit berupa tetrahedral TO4. Zeolit memiliki luas permukaan yang besar, struktur mikropori, dan afinitas tinggi pada ion logam (Ismail et al 2014). Sehingga sangat baik digunakan sebagai adsorben.…”

Section: Pendahuluanunclassified

“…Gambar 1. Aplikasi penggunaan zeolit (Król 2020) Untuk memperoleh zeolit banyak metode sintesis yang dapat digunakan yaitu metode kopresipitasi (Rosyidah and Suyanta 2021), metode hidrotermal (Pratama and Muttaqin 2017) (Ismail et al 2014) (Mahaddilla and Putra 2013) (Prajaputra et al 2019), metode hidrogel (Saraswati 2016), dan lain-lain. Metode kopresipitasi merupakan metode yang paling mudah.…”

Section: Pendahuluanunclassified

SINTESIS ZEOLIT DARI BATU APUNG (PUMICE) DAERAH IJOBALIT LOMBOK TIMUR SEBAGAI ADSORBEN LOGAM Fe

Kurniawidi

Alaa

Mulyani

et al. 2021

Orb. J. Pend. Ilm. Fis.

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ABSTRAKAktivitas letusan besar Gunung Api Samalas di Lombok meninggalkan jejak mineral batuan beku salah satunya batu apung (pumice). Batu apung memiliki komposisi mineral utama berupa silika sebanyak 58,3%. Tujuan dari penelitian untuk identifikasi karakteristik zeolit dari batu apung sebagai adsorben logam Fe. Zeolite disintesis menggunakan metode kopresipitasi. Identifikasi gugus fungsi, kristalinitas, dan struktur kristal zeolite sintesis menggunakan FTIR dan XRD. Sedangkan analisis adsorbsi menggunakan AAS. Zeolit berhasil terbentuk dari sintesis batu apung ditandai dengan kemunculan gugus fungsi TO4 dan gugus fungsi Si-O-Si pada panjang gelombang 983,85 cm-1 dan 660,02 cm-1. Zeolit yang terbentuk dari proses sintesis batu apung yaitu tipe zeolit ZK-14 dengan struktuk kristal kubik. Adapun hasil analisis kemampuan adsorbs dari zeolite ZK-14 ini sangat baik mencapai 99,22% pada komposisi Si/Al pada 25/30. Sehingga sintesis batub apung menjadi zeolite dapat diaplikasikan sebagai penyerap logam Fe. Kata kunci: Adsorben; Batu Apung; Zeolit. ABSTRACTThe massive eruption activity of the Samalas Volcano in Lombok left traces of igneous rock minerals, one of which was pumice. The pumice has a main mineral composition of 58.3% silica. The purpose of this study is to identify the characteristics of zeolite from pumice as an adsorbent of Fe metal. Zeolite has been synthesized using a coprecipitation method. The identification of functional groups, crystallinity, and crystal structure of synthetic zeolite using FTIR and XRD. Meanwhile, AAS was implemented for the adsorption analysis. The zeolite was successfully formed from the synthesis of pumice characterized by the appearance of the TO4 functional group and the Si-O-Si functional group at wavelengths of 983.85 cm-1 and 660.02 cm-1. The zeolite fabricated from the pumice synthesis process is ZK-14 type zeolite with a cubic crystal structure. The examination results from the adsorption ability of zeolite ZK-14 are very good, reaching 99.22% at the Si/Al composition at 25/30. In fact, the synthesis of pumice into zeolite can be applied as an absorber of Fe metal. Keywords: Adsorbent; Pumice Stone; Zeolite.

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Pumice Characteristics and Their Utilization on the Synthesis of Mesoporous Minerals and on the Removal of Heavy Metals

Cited by 24 publications

References 19 publications

Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

Monte Carlo GEANT4 Simulation Approach in Analyzing Radiation Shielding Parameter of Lombok Pumice

Potential Use of Alkaline-Activated Indonesian Pumice Powder as Lead Adsorbent in Solution System

SINTESIS ZEOLIT DARI BATU APUNG (PUMICE) DAERAH IJOBALIT LOMBOK TIMUR SEBAGAI ADSORBEN LOGAM Fe

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