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All Journal Distilat: Jurnal Teknologi Separasi Jurnal Teknik Kimia dan Lingkungan
Kaliawan, Kaliawan
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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KUANTIFIKASI SENYAWA FLAVONOID DENGAN LC-MS/MS SECARA SIMULTAN Kaliawan, Kaliawan; Danardono, Prayogo
DISTILAT: Jurnal Teknologi Separasi Vol. 7 No. 1 (2021): February 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v7i1.170

Abstract

Pengujian senyawa flavonoid dengan metode kromatografi cair spektrometri massa (LC-MS/MS) dikembangkan dan digunakan untuk kuantifikasi secara simultan. Senyawa flavonoid yang menjadi target pengujian adalah senyawa quercetin, quercetin-3-O-glikosida, taxifolin dan rutin. LC-M/SMS menjadi teknik pengujian menggunakan teknik ionisasi electrospray (ESI) dengan pola ionisasi positif maupun negatif. SRM (Selected Reaction Monitoring) dipilih untuk penentuan secara spesifik senyawa target berdasarkan quasi ion molekuler prekursor dan transisinya. Tujuan penelitian ini adalah mengetahui seberapa jauh nilai pengukuran pada pada LC-MS/MS terhadap linieritas, presisi, akurasi, batas terendah deteksi dan batas terendah kuantifikasi. Hasil penelitian menunjukkan nilai linieritas mendekati satu, presisi dan akurasi dapat diterima/valid. Nilai LoD senyawa quercetin 42.9 ppb, quercetin 3-O-Glikosida sebesar 33 ppb, taxifolin 23.1 ppb, dan rutin 52.8 ppb. Sedangkan nilai LoQ senyawa quercetin 129 ppb, quercetin 3-O-Glikosida sebesar 99 ppb, taxifolin 69 ppb, dan rutin 159 ppb.
Producing Precipitated Calcium Carbonate (PCC) from CO2 Emissions during OFMSW Bio-Drying through Carbonation: A Preliminary Study Naryono, Eko; Lusiani, Cucuk Evi; Iswara, Mochammad Agung Indra; Chalim, Abdul; Azkiya, Noor Isnaini; Putri, Amalia Dwi Ardini; Tyas, Allivia Retnaning; Kaliawan, Kaliawan
Jurnal Teknik Kimia dan Lingkungan Vol. 10 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v10i1.9573

Abstract

Capturing CO₂ emissions during the bio-drying process of organic fraction municipal solid waste (OFMSW) presents an alternative approach to reducing CO₂ emissions in municipal solid waste (MSW) management. Absorption using an aqueous solution of Ca(OH)₂ is a viable CO₂ capture technology that produces precipitated calcium carbonate (PCC), a value-added product. The objectives of this study are to assess the impact of bio-drying aeration flow rate and absorption time in the Ca(OH)₂ solution on CO₂ absorption efficiency, the conversion of Ca(OH)₂, and the mass of the PCC product. The absorption process was performed in a semi-continuous bubble reactor with 15 L of 0.019 M Ca(OH)₂ aqueous solution. At bio-drying aeration flow rates of 5.1, 4.6, and 3.9 L/min/kg of waste, with CO₂ concentrations ranging from 1286 to 4395 ppm and temperatures between 23 to 30°C over a bio-drying period of 96 hours, it was observed that higher flow rates resulted in lower conversion rates of Ca(OH)₂ and reduced CO₂ absorption efficiency. The highest recorded conversion rates for Ca(OH)₂ and CO₂ absorption were 97.3% and 16.4%, respectively, yielding a PCC product of 4.8 g/kg of waste at an aeration flow rate of 3.9 L/min/kg waste and an absorption duration of 48 hours. FTIR and SEM analysis confirmed the presence of both calcite and aragonite crystal forms in the PCC product, as well as hydrated CaCO₃.
Co-Authors Abdul Chalim, Abdul Danardono, Prayogo Eko Naryono Iswara, Mochammad Agung Indra Lusiani, Cucuk Evi Noor Isnaini Azkiya, Noor Isnaini Putri, Amalia Dwi Ardini Tyas, Allivia Retnaning