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All Journal Indonesian Journal of Chemical Analysis (IJCA) SAINTI: Majalah Ilmiah Teknologi Industri
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Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering

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Effect of Dolomite Addition on The Performance of Palm Oil Mill Fly Ash for Methylene Blue Adsorption Elda Pelita; Rita Youfa; Desniorita; Anang Baharuddin Sahaq; Miftahurrahmah; Resi Levi Permadani; Jerry
Indonesian Journal of Chemical Analysis (IJCA) Vol. 6 No. 1 (2023): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol6.iss1.art7

Abstract

The use of palm oil mill fly ash (FA) as a low-cost adsorbent is one of the solutions for handling FA waste. In this study, the addition of dolomite is expected to improve the adsorbent performance. The aim of this study was to investigate the optimum FA-dolomite adsorbent composition and operating conditions for methylene blue adsorption. Different parameters were studied to optimize adsorption process such as the amount of dolomite, methylene blue flow rate, bed height and number of trays. FA-dolomite was converted into nano-adsorbent by sol-gel method which was coated on zeolite surface. Nano-adsorbents were characterized by XRF, FTIR, XRD and SEM. The adsorption capacity was tested by Spectrophotometer UV-Vis. XRF characterization showed that FA had the highest SiO2 content of 58.15%, while dolomite contained CaO of 52.72%. FTIR characterization detected the groups of Si-O-Si, Si-O-Al, Ca-O and Si-O. XRD characterization showed the average crystalline size of FA-dolomite 2% adsorbent was 28.56 nm and SEM characterization showed fine pores on the adsorbent surface. The highest adsorption efficiency obtained at FA-dolomite 2% was 97.364% and the lowest obtained at FA-dolomite 8% was 13.16% with a flow rate of 500 ml/h, adsorbent height of 9 cm and 3 trays. The greater the amount of dolomite added, the absorption efficiency decreases.
PERHITUNGAN TOTAL OIL LOSSES DAN YIELD REFINED BLEACHED DEODORIZED PALM OIL PADA PROSES REFINING UNIT REFINERY: KASUS PADA PALM OIL INDUSTRY DI DUMAI Aditya Putra Pratama; Desniorita
SAINTI: Majalah Ilmiah Teknologi Industri Vol. 18 No. 1 (2021)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/

Abstract

Sebuah perusahaan minyak sawit di Dumai melakukan proses refining yang bertujuan mengubah minyak sawit mentah (CPO) menjadi berkualitas minyak makan. Proses refining yang dilakukan meliputi pengikatan gum (degumming), pemucatan (bleaching) dengan bleaching earth, dan penghilangan beberapa komponen (deodorisasi). Dalam prosesnya, seringkali terjadi oil losses pada proses pemucatan dan deodorisasi. Minyak yang hilang biasanya terbuang bersamaan dengan Spent Bleaching Earth (SBE) dan Palm Fatty Acid Distillate (PFAD). Maka dari itu perlu dihitung nilai dari total oil losses pada proses refining dan yield produk RBDPO dan dapat mengidentifikasi faktor-faktor yang mempengaruhi dari nilai oil losses dan yield RBDPO. Dari analisis didapatkan bahwa Total Oil losses pada proses refining berkisar pada 0,12% hingga 0,22 %, dan yield RBDPO yang didapatkan berkisar pada 94,7% hingga 95%. Oil losses di Spent Bleaching Earth (SBE) berbanding lurus dengan BE dosing pada proses bleaching. Sedangkan, oil losses deodorized berbanding terbalik dengan kemurnian PFAD. Yield RBDPO dipengaruhi oleh total oil losses dan FFA CPO sebagai bahan baku. Nilai total oil losses dan nilai FFA CPO sebagai bahan baku berbanding terbalik dengan Yield RBDPO.
Co-Authors Aditya Putra Pratama Anang Baharuddin Sahaq Elda Pelita Jerry Jerry Miftahurrahmah Resi Levi Permadani Rita Youfa