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All Journal JURNAL INTEGRASI PROSES Indonesian Journal of Chemical Analysis (IJCA) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Texere Journal of Industrial Community Empowerment
Resi Levi Permadani
Politeknik ATI Padang
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Other

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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.
Pelatihan Pembuatan Sabun Cuci Piring Dalam Rangka Pemberdayaan Perempuan di Kecamatan Tanjung Mutiara Kabupaten Agam Anang Baharuddin Sahaq; Resi Levi Permadani; Syamsul Anwar; Reni Sutri; Kushisa Atta Jaeba; Lusi Rahma Yanti
Journal of Industrial Community Empowerment Vol 2, No 1 (2023): Published in April 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i1.187

Abstract

Most of the residents of Tiku V Jorong Village, Agam District work as farmers and gardeners, whereas the women mostly are housewives. The training given to women community in Tiku V Jorong Village was the production of liquid dish soap. The selection of liquid dish soap products is based on the fact that consumption of dish soap is always needed by every household in their daily life. In addition, the process of making liquid dish soap is relatively easy and the process does not require many equipment, thus it can be done by women community in Tiku V Jorong Village on the sidelines of other daily activities.The liquid dish soap can be used for their daily needs or can be business opportunities for the village. The activity was carried out on November 26, 2022, which was attended by ± 25 women. The training began with the explanation about the materials and equipment used in making the liquid dish soap.  The main materials used were texapon, sodium sulfate, and sodium chloride. Foam booster, perfume, and dye were used as additive. Then, the practice is carried out jointly between the women community and the community service team from Politeknik ATI Padang, thus the women community can be able to make the liquid dish soap on their own. The training was closed with the presentation of business prospective from liquid dish soap. All of the participants were enthusiastic with this training. With this training, it can be expected that the women community in Tiku V Jorong Village have the knowledge and the skill to make their own liquid dish soap. Besides, it can be the new opportunity for business thus the local economy can be improved as well.
PEMANFAATAN LIMBAH FLY ASH PABRIK KELAPA SAWIT SEBAGAI ADSORBEN LOW-COST UNTUK PEMUCATAN CRUDE PALM OIL Dyah Nirmala; Elda Pelita; Desniorita Desniorita; Rita Youfa; Regna Tri Jayanti; Anang Baharuddin Sahaq; Resi Levi Permadani
JURNAL INTEGRASI PROSES Vol 13, No 2 (2024)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v13i2.28882

Abstract

Penggunaan fly ash (FA) pabrik kelapa sawit (PKS) sebagai adsorben dapat meningkatkan nilai guna dalam pengolahan limbah padat PKS. Penelitian ini bertujuan mengkaji kemampuan FA sebagai adsorben untuk pemucatan (bleaching) crude palm oil (CPO). Adsorben FA diharapkan dapat mengurangi atau menjadi alternatif pengganti adsorben komersial bleaching earth (BE) di industri refinery minyak sawit. Penelitian diawali dengan proses aktivasi adsorben FA secara kimia (penambahan larutan asam oksalat) dan fisika (pemanasan menggunakan furnace). CPO dilakukan degumming terlebih dahulu menggunakan asam fosfat. Selanjutnya, adsorben hasil aktivasi dan adsorben komersial BE digunakan dalam proses bleaching CPO dengan jumlah adsorben dan suhu bleaching yang divariasikan. CPO hasil bleaching dilakukan uji warna dengan lovibond tintometer untuk menentukan kemampuan penyerapan adsorben. Penurunan warna CPO terendah diperoleh pada adsorben FA dengan aktivasi kimia pada konsentrasi asam oksalat 1,5 M (FA 1,5 M) dan aktivasi fisika pada suhu 400°C (FA 400°C) masing-masing sebesar 16R/16Y dengan jumlah adsorben 1,5% dan suhu pemucatan 120°C. Berdasarkan hasil uji gum, penggunaan dosis adsorben 1,5% menunjukkan tidak adanya sisa gum pada CPO hasil bleaching. Selain itu juga dikaji kemampuan penyerapan dari kombinasi adsorben FA dan BE dengan rasio yang divariasikan. Penurunan warna CPO terbaik sesuai standar mutu industri refinery sebesar 17R/17Y diperoleh pada rasio adsorben BE:FA sebesar 1:3 (adsorben campuran BE:FA 1,5 M dan BE:FA 400°C). Kadar FFA CPO hasil bleaching secara keseluruhan mengalami kenaikan dibanding dengan CPO awal yaitu sebesar 7,719%.
Evaluation of the Stability of the Anaerobic Digestion Process of POME Based on the Correlation of VFA, Alkalinity and Methane Content Anang Baharuddin Sahaq; Agung Kurnia Yahya; Resi Levi Permadani; Salwa Asyifa; Aulia Firda Alfiana
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 8 No 1 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v8i1.529

Abstract

Palm Oil Mill Effluent (POME) contains a high organic load and requires effective treatment to prevent environmental pollution while enabling energy recovery. Anaerobic digestion is widely applied for POME treatment due to its ability to reduce organic pollutants and produce methane-rich biogas; however, its performance is highly dependent on process stability. This study aims to evaluate the stability of the anaerobic digestion process of POME through correlation analysis among volatile fatty acids (VFA), total alkalinity (TA), suspended solids (SS), and methane content (CH₄) using field operational data. The study was conducted at an industrial-scale biogas plant treating POME, where slurry samples were collected periodically from multiple biodigester units representing different digestion stages. VFA and TA were analyzed using acid–base titration, SS by gravimetric method, and methane content using a gas analyzer. The results show that the anaerobic digestion process operated under stable mesophilic conditions (35 ± 2 °C) with reactor pH maintained in the optimal range of 6.8–7.5. VFA concentrations remained relatively low (approximately 480–510 mg/L), supported by sufficient alkalinity (about 5,600 mg/L as CaCO₃), resulting in a low VFA/TA ratio (~0.09), indicating stable process conditions. A significant reduction in COD from approximately 41,700 ppm in the influent to about 7,200 ppm in the effluent was achieved, corresponding to a COD removal efficiency of 83%. Methane content in the biogas remained stable at ≥55%, supporting effective energy utilization without flaring. These results demonstrate that maintaining a balanced relationship among VFA, alkalinity, suspended solids, and operating conditions is essential for ensuring stable anaerobic digestion and consistent biogas quality in industrial-scale POME treatment systems.
ADSORPSI LOGAM BERAT LIMBAH CAIR TEKSTIL MENGGUNAKAN ZEOLIT DAN FLY ASH KELAPA SAWIT Elda Pelita; Rita Youfa; Dyah Nirmala; - Desniorita; Regna Tri Jayanti; Resi Levi Permadani; Dwimaryam Suciati
Texere Vol 24, No 1 (2026): Texere Volume 24 Nomor 1 Tahun 2026
Publisher : Politeknik STTT Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53298/texere.v24i1.08

Abstract

Reducing heavy metal concentrations in wastewater remains a major challenge in industrial waste treatment, including textile wastewater. One effective and economical method is filtration using porous adsorbent media. This study aimed to evaluate the effectiveness of filtration media based on palm oil mill fly ash and zeolite in reducing heavy metal concentrations in textile wastewater. The filtration process was carried out using a layered filter system with four different media arrangement models to adsorb pollutants from wastewater. The results showed that the filtration system significantly reduced heavy metal concentrations, with an average removal efficiency of 85%. The quality of wastewater after filtration using fly ash and zeolite media with pH of 7, TSS of 0.2 mg/L, and Cr concentration of 0.065 mg/L. The best filtration performance was achieved by Model A, with the media arrangement consisting of (1) coarse zeolite, (2) fine zeolite, (3) fly ash, and (4) cotton fiber. This media combination has strong potential as a simple, effective, and environmentally friendly technology for textile wastewater treatment.
Co-Authors - Desniorita Anang Baharuddin Sahaq Aulia Firda Alfiana Desniorita Desniorita Desniorita Dwimaryam Suciati Dyah Nirmala Elda Pelita Jerry Jerry Kushisa Atta Jaeba Lusi Rahma Yanti Miftahurrahmah Regna Tri Jayanti Reni Sutri Rita Youfa Salwa Asyifa Syamsul Anwar Yahya, Agung Kurnia