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Mineralogical, Microstructural and Compressive Strength Characterization of Fly Ash as Materials in Geopolymer Cement Cut Rahmawati; Sri Aprilia; Taufiq Saidi; Teuku Budi Aulia
Elkawnie: Journal of Islamic Science and Technology Vol 7, No 1 (2021)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v7i1.7787

Abstract: This study was designed to examine the mineral, microstructural, and mechanical strength properties of fly ash and its feasibility as a raw material for geopolymer cement. The study used an experimental method by examining the characteristics of fly ash by X-ray Fluorescence Spectrometer (XRF), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), hydrometer method, Scanning electron microscopy (SEM), and compressive strength testing. For creating the geopolymer cement paste, a concentration of NaOH 10M was used, with a ratio of water/solid = 0.4 and a ratio of Na2SiO3/NaOH = 1 using curring at room temperature. The results showed the geopolymer pastes have a compressive strength of 18.1 MPa and 21.5 MPa after 7 days and 28 days. The XRD results showed a decrease in the peak of 2θ at 26.54° because the amorphous part had transformed into a C-S-H solution in geopolymer cement. This finding was supported by the FTIR spectra results showing Si-O-Si bending vibration and the functional group of AlO2. It showed that Nagan Raya fly ash-based geopolymer is a potential construction material.Abstrak: Penelitian ini dirancang untuk mendapatkan sifat mineral, mikrostruktural, dan kekuatan mekanis dari fly ash serta kesesuaiannya sebagai material dasar pada semen geopolimer. Metode penelitian yang digunakan adalah metode eksperimen dengan cara menguji karakteristik dari fly ash dengan pengujian X-ray Fluorescense Spectrometer (XRF), Fourier transform infrared (FTIR) spectoscopy, X-ray diffraction (XRD), hydrometer method, Scanning electron microscopy (SEM) dan kuat tekan. Untuk pembuatan pasta semen geopolimer digunakan konsentrasi NaOH 10 M, rasio water/solid 0,4 dan rasio Na2SiO3/NaOH = 1 dengan perawatan pada suhu kamar. Hasil menunjukkan setelah 7 hari pasta geopolimer memiliki kuat tekan 18,1 MPa dan 21,5 MPa pada 28 hari. Hasil XRD menunjukkan adanya penurunan puncak 2θ pada 26,54° ini disebabkan karena bagian amorf dari fly ash telah menjadi larutan C-S-H pada semen geopolimer. Hasil ini diperkuat dengan analisis FTIR spectra yang menunjukkan adanya Si-O-Si bending vibration dan gugus fungsi dari AlO2. Hasil menunjukkan fly ash dari Nagan Raya potensial sebagai bahan material konstruksi berbasis geopolimer.

Sintesis Membran Kitosan-Silika Abu Sekam Padi Untuk Penurunan Logam Berat Cu dengan Proses Ultrafiltrasi Deasy Amanda Valentine; Sri Aprilia; Fauzi M Djuned
Jurnal Serambi Engineering Vol 4: No. Edisi Khusus (Oktober 2019)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v4i2.1424

This study chitosan membranes were made by phase inversion method by adding rice husk ash silica additives to the casting solution. This study aims to create and evaluate the characteristics of chitosan-silica rice husk ash membranes for application in reducing Cu heavy metals. Chitosan membrane modification is needed to produce membranes with better character, for example increasing membrane stability, reducing pore size so that the separation of molecules or rejection of macromolecules from a membrane solution is more effective. The concentration of chitosan-silica rice husk ash was varied at 20, 19, 17 and 15 (% by weight). The resulting membrane was further characterized for morphological structure parameters by scanning electron microscopy (SEM), fourier transform infrared (FTIR). Flux and solution rejection using dead-end filtration modules. The SEM test results show that the membrane has pores with asymmetric structures. Membrane performance test on Cu metal has a rejection value of 38%, 39%, 46% and 62% with flux gain reaching 0.4135 to 15.4377 L / hr.

Peningkatan Nutrisi Pupuk Organik Cair Dari Limbah Pemurnian Minyak Nilam Menggunakan EM4 Titien Sara; Syaifullah Muhammad; Sri Aprilia
Jurnal Serambi Engineering Vol 6, No 2: April 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i2.2885

The production of patchouli oil refining the largest waste in Indonesia. But still has high nutrient content and can be used as liquid organic fertilizer. To increase the efficiency of the formation of liquid fertilizer from patchouli waste requires the role of EM4 bioactivator and chicken manure. The study aims to determine the production of liquid organic fertilizer froom potchouli waste with EM4 bioactivator and the addition of chicken manure as well as to analyze the effect of fermentation time and EM4 solution to obtain maximum N, P, K content. The results showed that there were some effect of fermentation time and variable of EM4 on NPK content. The maximum solution of N in the variable 8% EM4 solution with fermrntation time of 3 days was 0.34%. The maximum P in the variable of 4% EM4 solution with a fermentation time of 9 days was 0.10%. The maximum K in the variable of 2 and 4% EM4 solution with a fermentation time of 5 days were 0.27%.

Karakterisasi Bionanofiller Dari Limbah Padi Sebagai Alternatif Penguatan Pada Polimer Komposit Eryani Eryani; Sri Aprilia; Farid Mulana
Jurnal Serambi Engineering Vol 3, No 2 (2018)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v3i2.717

Agricultural waste such as rice straw, rice husk and rice husk ash have not been utilized properly. This waste of agricultural produce can actually be used as an alternative to bionanofiller because it contains an excellent source of silica. The silica content contained in the rice waste when combined with the polymer matrix can produce composites having high thermal and mechanical properties. Characterization of bionanofiller from this rice waste is done by SEM, XRF, FTIR, XRD and particle density. The result of SEM analysis from this rice waste is feasible to be used as filler because it has size 1 μm. Likewise with the results of XRF analysis that rice waste contains a high enough silica component that is 80.6255% - 89.83%. FTIR test results also show that bionanoparticles from rice waste have the same content of silica. In the XRD analysis the best selective gain of rice waste is found in rice husk ash which is characteristic of amorp silica at a range of 2ϴ = 22. The largest density analysis of paddy waste was found in rice husk 0.0419 gr / cm , followed by rice straw by of 0.0417 gr / cm 3 and rice hulk ash 0.0407 g / cm 3

Karakterisasi Bionanofiller Dari Limbah Serbuk Kayu Meranti Sebagai Pengisi Pada Polimer Komposit Maria Ulfah; Sri Aprilia; Fauzi M. Djuned
Jurnal Serambi Engineering Vol 3, No 2 (2018)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v3i2.718

Utilization of wood powder is one of the alternative in waste wood prevention which has not been optimally utilized. Utilization of bionanofiller based on wood waste such as wood powder can also reduce dependence on raw materials such as silica, clay, bentonite, zeolite which diminished its existence. The sample used in this study is Meranti wood powder which is then prepared and characterized. The characterization of bionanofiller waste of Meranti wood powder is done by analyzing particle density, XRD, SEM, and FTIR. Particle density analysis showed Meranti wood powder having density of 0,044 gr/cm . XRD analysis shows that the maximum peak at an angle of 2θ = 22,2o 3 indicates the presence of carbon phase. The results of SEM analysis of Meranti wood powder are suitable for use as fillers because they are 1 μm in size. The result of functional group analysis shows the presence of functional groups -OH, -CH3, -CH2, C = C, C-H and C-O.

Modifikasi membran polyvinylidene fluoride (PVDF) dengan penambahan polyvinyl pyrrolidone (PVP) dan kitosan dengan metode inversi fasa Muhfadzallah Muhfadzallah; Umi Fathanah; Sri Aprilia; Syawaliah Muchtar; Mukramah Yusuf
Jurnal Litbang Industri Vol 12, No 2 (2022)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v12i2.7726.105-114

One of the simplest approaches to improve membrane performance is to increase the hydrophilicity of the membrane. This article describes the manufacture of activated polyvinylidene fluoride (PVDF) based membranes using PVP and chitosan as organic additives, with the specific aim of increasing the hydrophilicity of the membranes. Variations of dope solution were made by adding 1% by weight of PVP and 1, 2, and 3% by weight of chitosan into three different PVDF polymer solutions. The effect of additives on the membrane was obtained by evaluating chemical functional groups by ATR-FTIR, morphological changes by SEM, and filtration performance. SEM images show that the presence of additives changes the morphological structure of the membrane. This change also had a significant impact on the membrane performance, as evidenced by the increased permeability of the pure water solution and the removal of dissolved humic acid. Overall, modified PVDF membranes with 1% by weight of PVP and 1, 2, and 3% by weight of chitosan resulted in much better permeability than unmodified PVDF membranes due to their excellent hydrophilicity.

Modifikasi membran polyvinylidene fluoride (PVDF) dengan penambahan polyvinyl pyrrolidone (PVP) dan kitosan dengan metode inversi fasa Muhfadzallah Muhfadzallah; Umi Fathanah; Sri Aprilia; Syawaliah Muchtar; Mukramah Yusuf
Jurnal Litbang Industri Vol 12, No 2 (2022)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v12i2.7726.105-114

One of the simplest approaches to improve membrane performance is to increase the hydrophilicity of the membrane. This article describes the manufacture of activated polyvinylidene fluoride (PVDF) based membranes using PVP and chitosan as organic additives, with the specific aim of increasing the hydrophilicity of the membranes. Variations of dope solution were made by adding 1% by weight of PVP and 1, 2, and 3% by weight of chitosan into three different PVDF polymer solutions. The effect of additives on the membrane was obtained by evaluating chemical functional groups by ATR-FTIR, morphological changes by SEM, and filtration performance. SEM images show that the presence of additives changes the morphological structure of the membrane. This change also had a significant impact on the membrane performance, as evidenced by the increased permeability of the pure water solution and the removal of dissolved humic acid. Overall, modified PVDF membranes with 1% by weight of PVP and 1, 2, and 3% by weight of chitosan resulted in much better permeability than unmodified PVDF membranes due to their excellent hydrophilicity.

The Effect of Low-Density Poly Ethylene (LDPE) Towards Plastic Oil Quality Dedy Hariadi; Sofyan M. Saleh; R. Anwar Yamin; Sri Aprilia
Aceh International Journal of Science and Technology Vol 10, No 1 (2021): April 2021
Publisher : Graduate Program of Syiah Kuala University

Nowadays, the use of plastics is inseparable from daily life activities for both industrial commercial and household needs. Every year, an average individual consumes 700 plastic bags. Furthermore, the major types of plastic pollutants are High-Density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE). The nature of LDPE plastic makes it very difficult to undergo decomposition. Subsequently, efforts to overcome this problem have been carried out by several methods of processing or utilizing its waste through pyrolysis. This study aims to determine the effect of the quality of LDPE plastic waste on the plastic oil produced from the pyrolysis process. Based on their chemical compounds, all plastic oils produced were categorized as carbon compounds instead of hydrocarbons. Although, from the quality of the LDPE plastic used, the process produced gasoline, naphtha, and kerosene, the quality of each oil was different. Therefore, the higher the quality of the LDPE plastic used, the better the quality of the oil produced

The Effect of Low-Density Poly Ethylene (LDPE) Towards Plastic Oil Quality Hariadi, Dedy; M. Saleh*, Sofyan; Yamin, R. Anwar; Aprilia, Sri
Aceh International Journal of Science and Technology Vol 10, No 1 (2021): April 2021
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.10.1.17967

Nowadays, the use of plastics is inseparable from daily life activities for both industrial commercial and household needs. Every year, an average individual consumes 700 plastic bags. Furthermore, the major types of plastic pollutants are High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE). The nature of LDPE plastic makes it very difficult to undergo decomposition. Subsequently, efforts to overcome this problem have been carried out by several methods of processing or utilizing its waste through pyrolysis. This s tudy aims to determine the effect of the quality of LDPE plastic waste on the plastic oil produced from the pyrolysis process. Based on their chemical compounds, all plastic oils produced were categorized as carbon compounds instead of hydrocarbons. Althou gh, from the quality of the LDPE plastic used, the process produced gasoline, naphtha, and kerosene, the quality of each oil was different. Therefore, the higher the quality of the LDPE plastic used, the better the quality of the oil produced.

Pelatihan Budidaya Maggot BSF Sebagai Solusi Penanganan Sampah Organik Dan Pakan Ternak Di Desa Cibinong Atmaja, Noorulviah Beredhawati; Saepudin, Ahmad; Supriadi, Cucu; Aprilia, Sri
ADINDAMAS: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2022): ADINDAMAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : STIE Syariah Indonesia Purwakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37726/adindamas.v2i2.359

Cibinong Village has quite a variety of potentials, one of which is in the livestock sector. In the livestock sector, there are actors cultivating chicken, catfish, catfish and other consumption fish. One of the problems that farmers often face is the increase in the price of animal feed, fish and chicken consumed require a lot of animal feed before it can be harvested. With the high demand for animal feed, the increase in the price of animal feed has become an obstacle to the sustainability of the livestock business in Cibinong Village. The purpose of this PKM is to provide BSF Maggot Cultivation Training as a Solution for Handling Organic Waste and Animal Feed in Cibinong Jatiluhur Village, Purwakarta. The PKM method uses a socialization approach. BSF Maggot Cultivation Training as a Solution for Handling Organic Waste and Animal Feed in Cibinong Jatiluhur Purwakarta Village was carried out properly and smoothly, on February 5 2022. The people of Cibinong Jatiluhur Purwakarta Village were very enthusiastic about participating in various series of events at this BSF maggot cultivation training, because Through this training one of the community's concerns about expensive animal feed can be answered or a solution can be found. All that remains is for the people of Cibinong Jatiluhur Village, Purwakarta, to be consistent in carrying out this BSF maggot cultivation, so that the availability of animal feed can be fulfilled and the purchasing power of cheap animal feed is achieved.

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