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All Journal Jurnal Natur Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Indonesian Journal of Chemistry Akta Kimia Indonesia JURNAL PHOTON EcoNews
Amilia Linggawati
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Mathematics Nursing Physics

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PEMBUATAN MEMBRAN HIBRID POLISULFON-LEMPUNG YANG DIKOAGULASI OLEH 2-PROPANOL-AIR DAN APLIKASINYA PADA AIR GAMBUT Zaiyar -; Amilia Linggawati; Muhdarina -
Sistem Informasi Vol 4 No 1 (2013): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v4i1.166

Abstract

Penelitian ini, bertujuan untuk membuat membran hibrid polisulfon-lempung secara inversi fase menggunakan zat aditif polietilen glikol (PEG) (PEL 1) dan tanpa PEG (PL 1). Matriks polimer ini dikoagulasi dalam koagulan campuran2-propanol-air. Membran hibrid PEL 1dan PL 1 diaplikasikan pengolahan air gambut yang berasal dari Desa Rimbo Panjang Km 18, meliputi pengukuran pH, warna dan zat organik. Hasil penelitian menunjukkan membran PEL 1 dan PL 1 dapat menaikkan pH air gambut sesuai syarat kualitas air minum PERMENKES No.492/MENKES/PER/IV/2010, hanya membran PEL 1 dapat menurunkan warna air sesuai Permemkes dan Kedua membran belum dapat menurunkan zat organik sesuai Permenkes
PENGARUH SUHU TERHADAP PRODUKSI ASAM LEVULINAT DARI INULIN UMBI DAHLIA (Dahlia Sp.) Rosa Murwindra; Saryono Sikumbang; Amir Awaliddin; Amilia Linggawati
Sistem Informasi Vol 7 No 01 (2016): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v7i01.573

Abstract

Dahlia is a floriculture plant with tuber that rich in inulin. Inulin is soluble in hot water and it will settle on cool temperature in alcohol. The inulin extraction to use hot water from dahlia tuber take from Bukittinggi of West Sumatra. Extraction result from 100 g dahlia tuber is 4% inulin (w/w dahlia tuber), such as inulin flour is white gray. As qualitative test with Seliwanoff and Nelson-Somogyi methods, that inulin positive contain of fructose and reducing sugar. This inulin can be converted into levulinic acid using acid catalyst at high temperature. Production of levulinic acid with variate reaction temperature from 130 – 170 oC. The reaction of inulin convertion is done in ampul that burned in oven. In this experiment, conversion of inulin to be levulinic acid is high 26,25% (w/w inulin) using acid catalyst of hydrochloride acid 1 M and heating 170 oC about 15 minutes.
Esterification of Crude Palm Oil Using H2SO4 and Transesterification Using CaO Catalyst Derived from Anadara granosa Nurhayati Nurhayati; Sofia Anita; Tengku Ariful Amri; Amilia Linggawati
Indonesian Journal of Chemistry Vol 17, No 2 (2017)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.682 KB) | DOI: 10.22146/ijc.24909

Abstract

In this study biodiesel was produced from crude palm oil through two-step processes, namely esterification reactions using homogeneous H2SO4 catalyst and transesterification using the heterogeneous base CaO catalyst derived from Anadara granosa shell. Several parameters affecting to the yields of biodiesel were investigated including the amount of the catalysts, the molar ratios of oil to methanol, reaction times and reaction temperatures. The CaO catalyst was prepared by calcining the A. granosa shells at the temperatures of 800 and 900 °C for 10 h. The as-synthesized biodiesel was analyzed using GC and its characteristics were determined and the results were compared to Standard National for Biodiesel (SNI 04-7183-2006). The optimum condition for the esterification process (step 1) was as follows: reaction temperature of 65 °C, reaction time of 3 h and mol ratio of oil to methanol 1:24. For the transesterification (step 2) the optimum conditions were attained using the catalyst weight 3%, reaction temperature of 60 °C, reaction time of 3 h, mole ratio of oil/methanol 1:6 and the catalyst calcination time of 10 h with the conversion of 87.17%. This biodiesel yield by the two-step processes was higher (2.7%) than that using only one-step process (transesterification).
ANALISIS CEMARAN AIR LIMBAH PADA SUMUR BOR DI SEKITAR RPH RUMINANSIA CIPTAKARYA PANAM PEKANBARU Elvi Syahrina; Mirna Ilza; Amilia Linggawati
EcoNews Vol 4 No 1 (2021): EcoNews
Publisher : Program Studi Ilmu Lingkungan, Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (939.782 KB) | DOI: 10.47826/econews.4.1.p.9-15

Abstract

The objectives of this reserch are to analysis the wastewater content of Ruminasiat RPH Pekanbaru City and compare it with the quality standard of waste water, namely PermenLH No.5/2014. Then analysis the quality of bore well water used by the community around the RPH Ruminansia and compare it with Permenkes No.416 / Men.kes / Per / IX / 20 and analysis the social economic impact of the community living around the RPH. The wastewater parameters measured were BOD, COD, TSS, fatty oil, organic nitrogen and pH. While the parameters of the wellbore water are color, odor, taste, TDS, pH, nitrate, nitrite, sulfate, and total coliform.The results of reseach show indicate that Ruminansia RPH wastewater is above the quality standard, except for the pH parameter. Meanwhile, drilled well water with a distance of approximately 5 meters does not meet the quality standards for clean water quality including total coliform and nitrate parameters, well water with a distance of 50 meters meets the requirements for clean water quality that can be utilized by the surrounding community.
Synthesis and Characterization of CaO-SiO2 Heterogeneous Catalyst of Blood Cockle Shells and Coconut Fiber Ash for Biodiesel Production from Crude Palm Oil Nurhayati, Nurhayati; Muhdarina, Muhdarina; Linggawati, Amilia; Siregar, Siti Saidah
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.91444

Abstract

The utilization of sustainable and renewable materials, specifically CaO derived from blood clam shells and SiO2 extracted from coconut fiber, as catalysts for biodiesel production not only promotes waste valorization but also enhances catalytic efficiency, providing an eco-friendly and effective solution for biodiesel synthesis. The present study was synthesized and characterized CaO-SiO2 catalysts using the impregnation method with SiO2 content at 3, 5, and 7 wt.%. Characterization included surface area (BET), crystallinity and crystal size (XRD), chemical composition (XRF), functional groups (FTIR), and acidity-basicity (pyridine adsorption and titration). The maximum biodiesel yield of 96.29% was achieved under optimized conditions: 2 wt.% catalyst loading, 90-min reaction time, 60 °C temperature, and a 1:9 oil-to-methanol molar ratio, determined using response surface methodology (RSM). The synthesized biodiesel was evaluated according to ASTM D6751 standards, and its purity and methyl ester composition were analyzed using GC-MS. The results showed that the CaO-SiO2 catalyst achieved a biodiesel purity of 97.44%, higher than that obtained with unmodified CaO. This research successfully modified the CaO-SiO2 heterogeneous catalyst, enhancing its surface area and acidity, which led to an increase in the purity and yield of biodiesel synthesized from crude palm oil with high free fatty acid content.
Co-Authors -, Zaiyar Alhusnalia Ramadhani Amir Awaliddin Amir Awaluddin Andi Dahliaty Anita, Sofia Awaliddin, Amir Dwi Cahyaningsih DYAH AYU ANGGRAINI Elvi Syahrina Mirna Ilza Muhdarina ' Muhdarina - Muhdarina Muhdarina NURHAYATI ' Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Pepi Helza Yanti Reza Syahroni Rini Setiowati Rosa Murwindra, Rosa Saryono Saryono Sikumbang Saryono, M.Or. S.Pd. Jas. Siregar, Siti Saidah Syahrina, Elvi SYAIFUL BAHRI T. Ariful Amri Tengku Ariful Amri Tengku Ariful Amri Tengku Ryhaan Permata Sari Devi Yulianti Yulianti Zaiyar -