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All Journal Reaktor Madani: Multidisciplinary Scientific Journal
Putri, Tiara Ariani
Universitas Jenderal Achmad Yani
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Penggunaan Pelarut Acidified Water dalam Perolehan Antosianin dari Kulit Buah Naga Merah menggunakan Microwave Assisted Extraction (MAE) Shiddiqi, Qifni Yasa Ash; Putri, Tiara Ariani; Hizbiyati, Andini; Prabowo, Bambang Hari; Anwar, Nadiem; Nurramdhania, Anisya; Apriliani, Fatiha
Madani: Jurnal Ilmiah Multidisiplin Vol 3, No 6 (2025): July 2025
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.16739241

Abstract

Dragon fruit peels are agricultural waste products that weigh 30-35% of the fruit. Dragon fruit peels contain anthocyanin natural dyes which are quite high. Anthocyanins are a class of flavonoid compounds which are widely divided into plant polyphenols. Anthocyanins are stable at pH 3.5 and temperature 50. The purpose of this study is to determine the anthocyanin content of dragon fruit peels and also to know the quality of natural dyes produced from anthocyanin dragon fruit peels. Intake of anthocyanin dyes is carried out by the extraction method followed by a distillation process so that the anthocyanin extract becomes more concentrated and can be applied directly as a natural dye. The extraction technique used is Microwave Assisted Extraction (MAE) with acidified water solvent. The acid used is citric acid 10% with a ratio of aquades: citric acid 10% is 3:1 and 8:1 with extraction time of 1,3,5 minutes at 350 watts of power. The content of anthocyanin was analyzed using a UV-VIS spectrophotometer. The best results of the content of anthocyanin were at the extraction time of 5 minutes with a solvent ratio of 3: 1 with a concentration of 36.40 mg /100 g.
Sulfonated Polysulfone/PEG/Halloysite Nanotube Hybrid Tight-Ultrafiltration Membranes for Treatment of Industrially Contaminated Raw Water Okinawa, Jessica Enis; Agustin, Diva Amerya; Annisa, Rani; Putri, Tiara Ariani; Aryanti, Putu Teta Prihartini
Reaktor Volume 25 No.2 August 2025
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.25.2.%p

Abstract

The quality of river water in Indonesia predominantly falls below the established standards for clean water, including the Citarum River in West Java. Despite the associated health risks, many residents in the river basin continue to utilize this water for their daily needs. This study aims to develop tightly structured ultrafiltration membranes (tight-UF) capable of treating contaminated raw water into clean water. The tight-UF membranes were fabricated using sulfonated polysulfone (SPSf, 20% by weight), blended with polyethylene glycol (PEG400, 20% by weight), and halloysite nanotube additives (HNT, 1-2% by weight) in a solvent mixture of acetone and dimethylacetamide (Ac/DMAc). SPSf was synthesized using a sulfonation technique involving immersion in sulfuric acid at concentrations of 70% and 98%. The findings indicate that increasing the acetone concentration decreases the porosity and increases the membrane skin thickness. Additionally, the inclusion of HNT up to 2% resulted in reduced membrane selectivity due to particle agglomeration. The optimal formulation was identified at concentrations of SPSF/PEG400/HNT/Ac of 20/20/1/5% by weight, yielding a rejection rate of 98.57% and a flux of 63.45 L/m².h at 98% SPSF. These results underscore the potential of tight-UF membranes for applications in clean water treatment from contaminated water sources.
Treatment of Palm Oil Mill Effluent by an Integrated Aeration–Bipolar Electrocoagulation System Febrianto Adi Nugroho; Handoko Rusiana Iskandar; Nadiem Anwar; Tiara Ariani Putri; Putu Teta Prihartini Aryanti
Reaktor Volume 26 No.1 April 2026
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.78989

Abstract

Electrocoagulation (EC) has increasingly been used in wastewater treatment, including palm oil mill effluent (POME), due to its ease of operation and less sludge production. In this study, POME was treated using an integrated aeration and EC process, which was conducted continuously at a constant flow rate of 500 mL.min-1. The agitation process was applied in the EC reactor at a rotating speed of 20 rpm to shorten the electrolysis reaction time. The EC reactor was equipped with 6 electrodes as baffles. Two current densities (12 and 15A.m-2) and electrode configurations (3A-3C and 2A-2C-2B) were used, and the resulting effluents were compared. The experimental results showed that the highest contaminant removal was achieved with the electrode configuration 2A-2C-2B and the current intensity was 15 A. The BOD removal efficiency was 91.36% (from 132 to 11.4 mg.L-1), COD of 81.27% (from 386 to 72.3 mg.L-1), TDS of 47.64% (from 645.5 to 338 mg.L-1), TSS of 76.27% (from 43.7 to 10.4 mg.L-1), and turbidity of 96.46% (from 59.65 to 2.11 NTU). Meanwhile, the total energy requirement was 21.33 kWh.m-3 with the pH of the effluent of 8.05. The combination of aeration-EC can be used as an alternative POME treatment to achieve high contaminant removal efficiency.
Co-Authors Agustin, Diva Amerya Annisa, Rani Anwar, Nadiem Apriliani, Fatiha Aryanti, Putu Teta Prihartini Febrianto Adi Nugroho Handoko Rusiana Iskandar Hizbiyati, Andini Nadiem Anwar Nurramdhania, Anisya Okinawa, Jessica Enis Prabowo, Bambang Hari Putu Teta Prihartini Aryanti Shiddiqi, Qifni Yasa Ash