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All Journal Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri
Zultiniar Zultiniar
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Sintesa Precipitated Calcium Carbonate (PCC) Dari Kulit Kerang Darah (Anadara Granosa Dengan Variasi Konsentrasi Asam Dan Rasio CaO/HNO3 Dhini Octavianty; Amun Amri; Zultiniar Zultiniar; Yelmida Yelmida
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The purpose of this research was production of precipitated calcium carbonate (PCC) from blood cockle shell waste using carbonation method. Carbonation method that was used to synthesis PCC was modificated carbonation method by CaO as calcination result and HNO3 reaction and then flowed the CO2 gas. The learned variable was variation of the nitric acid concentration (1,5; 2; and 2,5 M) and CaO/HNO3 ratio (14:300; 17:300; 20:300 gr/ml). The highest yield of PCC was reached from the concentration of nitric acid 2 M and ratio 14 gr : 300 ml which the yield was 84,88%. From the X-Ray Diffraction (XRD) characteristic result, able to know the crystal form that reached was vaterite which was reinforced from analysis result of Scanning Elcetron Microscopy (SEM) with the sphere partical.Key words: Blood cockle shell, carbonation, PCC, SEM, XRD
Perengkahan Katalitik Palm Fatty Acid Distillate Menjadi Biofuel Menggunakan Katalis Fly Ash Sawit Widya Pangestu; Yelmida Yelmida; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Palm fly ash is a solid waste from process of shell and fiber burning. Palm fly ash have many component such as potassium, sodium, and silica, that make it can to be use as a catalyst. Palm fatty acid distillate (PFAD) is a byproduct from process of making cooking oil. PFAD potentially to used to produce biofuel with catalytic cracking process because it has a long hydrocarbons chain.  This study aims to utilize PFAD to be raw material of making biofuel with palm fly ash as a catalyst, as well as to know component of biofuel produced. This research was conducted into two stages, namely preparation of catalyst and process of cracking. Cracking reaction carried out in a stirred tank reactor at a variation of temperature 370-4300C, variation of ratio feed/catalyst 100-250:1 g. Cracking process carried out for 120 minutes. Yield maximum product obtained at a temperature of 4100 C with ratio feed/catalyst 150:1 g and catalyst dimension -60+100 mesh that is equal to 57,14 Cracking results analyzed by GC-MS and found the biofuel produced more dominant is a constituent of gasoline fuel.   Keywords : Biofuel, Fly ash Sawit, Catalytic Cracking, PFAD
Sintesis Hidroksiapatit Dari Cangkang Kerang Darah (Anadara Granosa) Dengan Proses Hidrotermal Variasi Rasio Mol Ca/P Dan Suhu Sintesis Affandi Affandi; Amun Amri; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Synthesis of hydroxyapatite (HAp) from blood cockle shell (Anadara granosa) by hydrothermal process has been successfully done. The aim of this research was to get theoptimum process condition and also to investigate the influence of the Ca/P mole ratio and the synthesis temperature toward HAp characteristic. The powder of blood cockles shell wascalcined to get CaO which then was reacted with diammonium hydrogen phosphate by using water as solvent. Hydrothermal process was done by closed system in order to avoid thesolvent be lost while heating up above the solvent’s boiling point. The samples then were characterized by using FTIR (Fourier Transform Infrared), XRD (X-Ray Diffraction), andSEM (Scanning Electron Microscopy). The functional groups were observed in the FTIR of the synthesized HAp are phosphate (PO4 3-), hydroxyl (OH-), carbonate (CO3 2-), and hydrogenphosphate (HPO4 2-). These functional groups indicate that HAp has been formed. XRD data showed the main peaks for HAp that strenghtened the truth of FTIR characterization. SEM was used to observe the morphology of the synthesized HAp that consisted of agglomerates. Through analysis of the EDXA (Energy Dispersive X-Ray Analysis), the Ca/P mole ratio of the synthesized HAp could be counted where the result is 2. EDXA and SEM analysis were done together due to EDXA and SEM are one device. The best condition in this synthesis occured at Ca/P mole ratio 1,60 and the synthesis temperature 160oC.Keywords: blood cockle shell; hydroxyapatite; hydrothermal
PENYISIHAN LOGAM CR (VI) DARI LIMBAH CAIR ELEKTROPLATING MENGGUNAKAN ADSORBEN BEADS KOMPOSIT CHITOSAN-CLAY Putri Fatihah Zuhrah; Shinta Elystia; Zultiniar Zultiniar; Dini Aulia Sari Ermal
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.513

Abstract

Water pollution by heavy metals is a serious problem. One of the dangerous parameters that contaminate waters is heavy metals that come from metal industrial waste. Electroplating wastewater contains heavy metals that are harmful and toxic to the environment. Alternative treatment that can be used is the adsorption process with a column system using chitosan-clay beads. Chitosan has amine and hydroxyl groups which have ability to absorb heavy metals. The results of the characterization by FTIR (Fourier Transform Infrared) test on chitosan produced contained a chitosan functional group and obtained a DD value of 80.97%. This study aims to remove Cr (VI) in electroplating wastewater. The variations carried out were variations in the ratio of the composition of chitosan-clay beads (w/w) (1.5:1), (2:1), (2.5:1) and a flow rate 3 mL/minute; 3.5 mL/min; and 4.5 mL/min. The results of the water absorption test (DSA) obtained for each variation of chitosan-clay beads were 609.52%; 628.27%; 658.04%, and the results of the compressive strength test are 22.491; 10,653; 3,015 Kgf. The results obtained are the best Cr (VI) removal efficiency of 95.46% with concentration of Cr (VI) 1.1566 mg/L at the ratio of chitosan-clay beads composition (2,5:1) (w/w) and flow rate 3 mL/min.
Co-Authors Affananda Taufik Affandi Affandi Ahmad Fadli Aldi Okta Priyatna Amun Amri Ardago Lengga Muda Siregar Ari Wibowo Harahap Bahruddin Bona Tua Deska Deska Dewi Indah Pratiwi Dhini Octavianty Dian Anggraini Purba Dini Aulia Sari Ermal Dovy Reyandi Ekky Wahyudi Fachry Abda El Rahman Fadly Sitohang Hafiz Hafiz Idral Idral Indah Fitriani Jefry Soclin Sianipar Juniwarnis Juniwarnis Khamaluddin Aditya Khodijah Khodijah Komalasari Komalasari Lucy Rahmawati M. Fauzan Akbar Mohd. Rafiq Muhammad Yusro Annur Nurrassyidin Nurrassyidin Nuruzzaman Shiqhi Paul Destin Purba Putri Fatihah Zuhrah Rathesa Najela Regina Giantika Resty Maiyola Riris Verawati Roselyn Indah Kurniati Rozanna Sri Irianty Shinta Elystia Siska Priscillia Aledya Siti Sakinah Sri Hidayanti Sry Utami Pardede Sudung Sugiarto Siallagan Syafrima Wahyu Syafruddin Syafruddin Utami Khairunnisa Widiya Widiya Widya Pangestu Yelmida Azis Yusnimar Sahan Zuchra Helwani