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All Journal Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan Prosiding Semnastek
Sari, Hutri Puspita
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Bioconversion of Fruit Wastes into High Economic Value of Lipids using Heterotrophic Microalgae Aurantiochytrium from Mangrove Forests of Bunyu Island, North Kalimantan Suhendra, Suhendra; Hutari, Andri; Pratiwi, Sekar; Sari, Hutri Puspita
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Aurantiochytrium microalgae is recognized as heterotrophic microalgae enables to produce high economic value of lipids for the use in health care industries. This research presents the production of biomass containing lipids through the bioconversion of fruit waste using Aurantiochytrium microalgae. Aurantiochytrium microalgae isolate was obtained from isolated mangrove leaves in the mangrove forest of Bunyu Island, North Kalimantan. The production process takes place in three stages, namely standing culture (SC), pre-culture (PC), and main culture. The SC and PC stages took place 48 hours respectively, while the MC took place 120 hours. The source of nutrition at the main cultivation stage (MC) used monosodium glutamate (MSG) as a nitrogen source, while the carbon source was from fruit waste. Amount of 250 grams of fruit waste was mixed and blended, added with 250 ml of water and then sonicated. The mass ratio of nitrogen source and carbon source was 1:3. The maximum of observed microalgal cell diameters for each stage were 14.5 μm (SC), 19.2 μm (PC) and 25.5 μm (MC). Produced biomass in this experiment has the characteristics of a yellow emulsion liquid, pH 6.2, fishy smell and total dissolved solids (TDS) of 4,820 ppm and a wet biomass of 68 g/l
Kajian Teknologi Material Maju untuk Pengolahan Ion Sulfat pada Limbah Cair Industri Sari, Hutri Puspita; Rahayu, Aster; Hakika, Dhias Cahya
Prosiding Semnastek PROSIDING SEMNASTEK 2025
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Pencemaran ion sulfat menjadi masalah serius dalam lingkungan, terutama akibat aktivitas industri seperti pertambangan dan pengolahan mineral. Tingginya konsentrasi sulfat dapat merusak kualitas air dan kesehatan manusia. Tujuan dari artikel ini adalah untuk mengevaluasi efektivitas material maju dalam menghilangkan ion sulfat dari air limbah. Metode yang digunakan mencakup studi literatur yang komprehensif, dengan fokus pada berbagai material seperti nanomaterial, komposit, dan resin penukar ion yang telah terbukti efektif dalam penghilangan sulfat. Hasil penelitian menunjukkan bahwa penggunaan ettringit dan polialuminum chloride (PAC) dapat mencapai efisiensi penghapusan sulfat hingga 90%. Selain itu, material seperti hidrokalumite dan resin penukar ion juga menunjukkan potensi yang signifikan. Kesimpulan dari penelitian ini menegaskan bahwa pemilihan material yang tepat dan pengaturan kondisi operasional, seperti pH dan waktu kontak, sangat berpengaruh terhadap efisiensi penghilangan sulfat. Oleh karena itu, penggunaan material maju menawarkan solusi yang lebih berkelanjutan untuk mengatasi pencemaran sulfat dalam industri, sekaligus mendukung pengelolaan air limbah yang lebih efektif dan ramah lingkungan. Artikel ini diharapkan dapat memberikan wawasan baru untuk praktik pengolahan air yang lebih baik di masa depan.
Bioconversion of Fruit Wastes into High Economic Value of Lipids using Heterotrophic Microalgae Aurantiochytrium from Mangrove Forests of Bunyu Island, North Kalimantan Suhendra, Suhendra; Hutari, Andri; Pratiwi, Sekar; Sari, Hutri Puspita
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Aurantiochytrium microalgae is recognized as heterotrophic microalgae enables to produce high economic value of lipids for the use in health care industries. This research presents the production of biomass containing lipids through the bioconversion of fruit waste using Aurantiochytrium microalgae. Aurantiochytrium microalgae isolate was obtained from isolated mangrove leaves in the mangrove forest of Bunyu Island, North Kalimantan. The production process takes place in three stages, namely standing culture (SC), pre-culture (PC), and main culture. The SC and PC stages took place 48 hours respectively, while the MC took place 120 hours. The source of nutrition at the main cultivation stage (MC) used monosodium glutamate (MSG) as a nitrogen source, while the carbon source was from fruit waste. Amount of 250 grams of fruit waste was mixed and blended, added with 250 ml of water and then sonicated. The mass ratio of nitrogen source and carbon source was 1:3. The maximum of observed microalgal cell diameters for each stage were 14.5 μm (SC), 19.2 μm (PC) and 25.5 μm (MC). Produced biomass in this experiment has the characteristics of a yellow emulsion liquid, pH 6.2, fishy smell and total dissolved solids (TDS) of 4,820 ppm and a wet biomass of 68 g/l
Fourier Transform Infrared (FTIR) Characterization of Sulfate Ion Adsorption on One-Pot Synthesized Quaternary Ammonium Polymer Derived from Vinasse Waste Sari, Hutri Puspita; Rahayu, Aster; Cahya Hakika, Dhias; Pramia Lestari, Syahrani
Eksergi Vol 23 No 1
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v23i1.15924

Abstract

Vinasse is a major liquid waste generated from the bioethanol industry and contains a high concentration of sulfate ions that may cause environmental problems if not properly managed. This study investigates sulfate adsorption from vinasse wastewater using a one-pot synthesized quaternary ammonium polymer, with a focus on functional group interactions analyzed by Fourier Transform Infrared Spectroscopy (FTIR). Quantitative adsorption experiments were conducted to confirm sulfate removal, while FTIR analysis was employed to examine changes in functional group characteristics before and after adsorption under various operating conditions. The quantitative results demonstrate that sulfate adsorption proceeds rapidly, achieving a removal efficiency of approximately 87.5534% with an adsorption capacity of 10.6800mg/g at a contact time of 20 minutes under the investigated conditions. FTIR spectra indicate that sulfate adsorption does not alter the main polymer structure and is primarily associated with changes in the intensity of bands related to quaternary ammonium groups and sulfate vibrations, suggesting non-covalent interactions dominated by electrostatic attraction, with possible contributions from hydrogen bonding. Overall, this study provides quantitative evidence of sulfate adsorption from real vinasse wastewater and demonstrates the usefulness of FTIR analysis in elucidating interaction behavior between sulfate ions and quaternary ammonium polymer functional groups.
Co-Authors Cahya Hakika, Dhias Dhias Cahya Hakika Hutari, Andri Pramia Lestari, Syahrani Pratiwi, Sekar Rahayu, Aster Suhendra Suhendra Suhendra Suhendra