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All Journal EKSAKTA: Journal of Sciences and Data Analysis Indonesian Journal of Chemistry IJCER (International Journal of Chemistry Education Research) IJCR (Indonesian Journal of Chemical Research)
Maisari Utami
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Islam Indonesia, Jl. Kaliurang Km. 14, Yogyakarta 55584, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Environmental Science Materials Science & Nanotechnology

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Catalytic Synthesis of Diethanolamide Surfactant from Used Cooking Oil Maisari Utami; Karna Wijaya; Akhmad Syoufian; Satyagraha Hakim Wicaksono
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 1, ISSUE 2, August 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol1.iss2.art7

Abstract

The synthesis of diethanolamide surfactant from used cooking oil was systematically studied using modified zeolite as catalyst. The activated zeolite was obtained by dispersing natural zeolite in sulfuric acid (H2SO4) solution.  Potassium carbonate (K2CO3) was loaded into activated zeolite by wet impregnation method. The methyl ester obtained from transesterification reaction of used cooking oil was refluxed with diethanolamine (C4H11NO) solution over K2CO3/zeolite catalyst in the production of diethanolamide surfactant. The amidiation reaction over K2CO3/zeolite effectively produced 92% of diethanolamide surfactant with the highest selectivity of methyl oleate. Diethanolamide surfactant showed stable foam and emulsion with the reduction of surface tension as much as 3.3 dyne/cm.
Synthesis of SO42–/ZrO2 Solid Acid and Na2O/ZrO2 Solid Base Catalysts Using Hydrothermal Method for Biodiesel Production from Low-Grade Crude Palm Oil Sri Setyaningsih; Maisari Utami; Akhmad Syoufian; Eddy Heraldy; Nasih Widya Yuwono; Karna Wijaya
Indonesian Journal of Chemistry Vol 22, No 1 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.65404

Abstract

Biodiesel is a renewable energy source that can be produced through esterification as well as transesterification reactions. This work presents a series of zirconia catalysts synthesized by hydrothermal method on various concentrations in acidic (H2SO4 0.3, 0.5, and 0.7 M) and basic (NaOH 1, 2, 3, and 4 M) solution to get a catalyst with the highest acidity or basicity. Characterizations of the catalysts were performed by FTIR, XRD, SEM-EDX, surface area analysis, acidity, and basicity test. The most active acid catalyst activity was evaluated for the esterification of low-grade crude palm oil (LGCPO), while the solid base catalyst was utilized for the transesterification reaction. The solid acid catalyst of 0.7 M SO42–/ZrO2 60 °C; 24 h was denoted as the most active acid catalyst with a total acidity of 1.86 mmol g–1, while 4 M Na2O/ZrO2 60 °C; 24 h catalyst was considered as the solid base catalyst with the highest total basicity of 3.75 ± 0.12 mmol g–1. The optimized acid catalyst exhibited a 31 times higher acidity than commercial ZrO2. The concentration of free fatty acids (FFA) decreased to 68.87% in the esterification reaction. The solid base catalyst of 4 M Na2O/ZrO2 60 °C; 24 h successfully converted LGCPO into biodiesel by 68.55% through a transesterification reaction.
Virtual Laboratory in Chemistry: Recent Information and Communication Technologies (ICT) in Chemistry Practical Course Imam Sahroni; Wiyogo Prio Wicaksono; Maisari Utami; Lutfia Isna Ardhayanti
IJCER (International Journal of Chemistry Education Research) VOLUME 4, ISSUE 2, October 2020
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol4.iss2.art4

Abstract

The covid-19 has impacted many sectors to change the way the run their activity, including the learning and teaching activity at a higher education. Many departments at the educational institution have been affected seriously due to the physical laboratory closing, especially for the activity at chemistry laboratory. The physical laboratory has been transformed to the virtual laboratory in order to accommodate the student to study the experimental course. By using the internet and communication technology (ICT) innovation in teaching and learning method, the student can still have the experiment and continue the lecture through online system. This effort may help the student to still play an active role while participating in the learning process.
Analisis Suhu, Derajat Keasaman (pH), Chemical Oxygen Demand (COD), dan Biologycal Oxygen Demand (BOD) dalam Air Limbah Domestik di Dinas Lingkungan Hidup Sukoharjo Randy Ramadani; Sigit Samsunar; Maisari Utami
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) Volume 6, ISSUE 1, 2021
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.888 KB) | DOI: 10.20885/ijcr.vol6.iss1.art2

Abstract

Air limbah domestik adalah air limbah yang berasal dari usaha dan atau kegiatan permukiman, rumah makan (restaurant), perkantoran, perniagaan, apartemen dan asrama yang berpotensi mencemari lingkungan. Hal tersebut disebabkan oleh nilai suhu, derajat keasaman (pH), Chemical Oxygen Demand (COD), dan Biologycal Oxygen Demand (BOD) yang tidak sesuai dengan Peraturan Menteri Lingkungan Hidup dan Kehutanan Republik Indonesia Nomor: P.68/Menlhk/Setjen/Kum.1/8/2016 Tentang Baku Mutu Air Limbah Domestik. Untuk mengatasi hal tersebut perlu dilakukan analisa limbah sebelum dibuang ke lingkungan. Analisis laboratorium terhadap sampel air limbah domestik dengan kode 063/AL/Lablingk_DLH/2021 meliputi penentuan suhu, pH, kadar COD dan BOD. Analisis suhu dilakukan dengan termometer, analisis pH dilakukan dengan pH meter, analisis COD dilakukan dengan menggunakan spektrofotometer UV-Vis dan analisis BOD dilakukan dengan metode titrasi iodometri. Hasil yang didapatkan adalah nilai suhu sebesar 25,95 oC, nilai pH sebesar 7,415, nilai COD sebesar 13,299 mg/L dan nilai BOD sebesar 1,512 mg/L. Hasil analisa suhu, pH, COD dan BOD menunjukkan angka dibawah ambang batas baku mutu limbah domestik.
Analisis Kadar Fenol dan Chemical Oxygen Demand (COD) pada Limbah Hasil Elektroplating Tinplate di PT Latinusa, Tbk Cilegon Salsa Widya Pratiwi; Maisari Utami
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) Volume 6, ISSUE 2, 2021
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.259 KB) | DOI: 10.20885/ijcr.vol6.iss2.art3

Abstract

Penelitian ini bertujuan untuk menentukan nilai kadar fenol dan Chemical Oxygen Demand (COD) pada air buangan final proses pembuatan tinplate di laboratorium QA PT Latinusa, Tbk. Metode yang digunakan untuk analisis kadar fenol dan Chemical Oxygen Demand (COD) yaitu dengan menggunakan Spektrofotometer UV-Vis HACH pada panjang gelombang 500 nm. Analisis kadar fenol dilakukan dengan menggunakan reagen NH4OH, K3[Fe(CN)6] dan antipirin, sedangkan analisis COD dilakukan dengan menggunakan reagen A (K2Cr2O7, H2SO4 dan HgSO4) serta reagen B (Ag2SO4 dan H2SO4). Analisis dilakukan setiap hari dalam satu bulan. Dari hasil analisis yang dilakukan diperoleh rata-rata kadar fenol pada air buangan final yaitu sebesar 0,32 mgL-1 dan sudah memenuhi baku mutu setelah dilakukan retest pada tanggal 6, 17, 19 dan 23 sedangkan untuk nilai COD sebesar 28,15 mgL1 sudah memenuhi baku mutu sehingga tidak berbahaya bagi lingkungan maupun makhluk hidup jika dibuang ke lingkungan.
Analisis Kadar Total Dissolved Solid (TDS) dan Total Suspended Solid (TSS) Pada Limbah Cair Dari Industri Gula Tebu Khofifah Khofifah; Maisari Utami
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) Volume 7, ISSUE 1, 2022
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol7.iss1.art6

Abstract

Proses produksi pabrik gula memerlukan bahan baku air dalam jumlah yang besar dan hampir seluruhnya menjadi air limbah dengan material organik berupa bahan terlarut maupun bentuk tersuspensi dalam limbah cair. Penelitian ini bertujuan untuk menganalisis kadar Total Dissolved Solid (TDS) dan Total Suspended Solid (TSS) pada limbah cair industri gula dengan menggunakan metode gravimetri. Pada TDS air limbah yang telah homogen disaring dengan pompa vakum, filtrat yang lolos kemudian diuapkan sampai kisat lalu dikeringkan pada suhu 180 ◦C hingga beratnya konstan. Pada TSS air limbah yang telah homogen disaring dengan kertas saring 0,45 µm yang telah ditimbang, residu yang tertahan pada kertas saring dikeringkan pada suhu 103-105 ◦C hingga beratnya konstan. Kenaikan berat saringan itulah yang mewakili Padatan Tersuspensi Total (TSS). Hasil penelitian menunjukkan bahwa kadar TDS sebesar 1000 mg/L serta kadar TSS sebesar 10 mg/L. Berdasarkan hasil uji, dapat disimpulkan bahwa kadar TDS dan TSS telah memenuhi baku mutu yang ditetapkan oleh Peraturan Daerah Provinsi Daerah Istimewa Yogyakarta Nomor 7 Tahun 2016 tentang baku mutu air limbah untuk kegiatan industri gula (parameter TDS sebesar 2000 mg/L dan parameter TSS sebesar 50 mg/L).
Co-Authors Akhmad Syoufian Akhmad Syoufian Eddy Heraldy Imam Sahroni Karna Wijaya Karna Wijaya Khofifah Khofifah Lutfia Isna Ardhayanti Randy Ramadani Salsa Widya Pratiwi Satyagraha Hakim Wicaksono Sigit Samsunar Sri Setyaningsih Wiyogo Prio Wicaksono Yuwono, Nasih Widya