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All Journal CHEMICA Jurnal Teknik Kimia Elkawnie Jurnal Sains & Teknologi Lingkungan Open Science and Technology
Joni Aldilla Fajri
Department Of Environmental Engineering, Faculty Of Civil And Planning Engineering Universitas Islam Indonesia, Jl. Kaliurang KM 14,5, Sleman, Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Mechanical Engineering

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Pembuatan Kolom Monolit Mixed-Mode untuk Pemisahan Fenol dalam Kromatografi Cair Sistem Kapiler Aster Rahayu; Joni Aldilla Fajri; Lee Wah Lim; Toyohide Takeuchi
CHEMICA: Jurnal Teknik Kimia Vol 5, No 2 (2018): Desember 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (334.261 KB) | DOI: 10.26555/chemica.v5i2.12282

Abstract

A Mixed-Mode monolithic column prepared from Pentaeritrytol Tetraacrylate (PETRA) and Ethylene dimathacrylate (EDMA) was investigated and used in capillary liquid chromatography. The polymer composition was optimized by varying percentage ratio of monomer and porogens. Column A with rasio 35/65 (monomer/porogen) showed the optimum ratio. The polymerization of acrylic groups were conducted by in-situ preparation in capillary fused silica. Three phenol compounds were separated using this monolithic column using acetonitrile 100% as eluent. Monolith PETRA-EDMA also could work to separate polar and non-polar compound simultaneously by HILIC mode using acetonitrile 90% as eluent. The morphology surface of monolith was observed by scanning electron microscope (SEM) and mechanical stability in term of pressure drop was observed as well.
Characterization of Organic Polymer Monolith Columns Containing Ammonium Quarternary As Initial Study For Capillary Chromatography Aster Rahayu; Siti Jamilatun; Joni Aldilla Fajri; Lee Wah Lim
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.v7i1.8764

Abstract

Abstract: The polymerization process with a simple step has become the centre of attention of several researchers. Various polymers have been developed, although in general, they use polymerization with a post-modification method. A quaternary ammonium monolith organic polymer has been prepared using a simple single thermal method in this research. 2-(Methacryloyloxy)-N,N,N-trimethylethanaminium chloride was as the monomer, and ethylene dimethacrylate was as crosslinker. The polymerization proceeded in fused-silica capillary (100 mm, 0.32 mm i.d. x 0.45 mm o.d.) using a one-pot approach method. To achieve the perfect macropores, isopropyl alcohol, PEG 400, and ethanol were used as porogen. Characterization of the surface morphology was carried out using a Scanning Electron Microscope (SEM), and the existence of an amine group was characterized by Fourier Transform Infrared Spectroscopy (FTIR). The distribution size of pores in the polymer was in the range of 1.29 to 3.33 µm.Abstrak: Polimerisasi dengan proses yang sederhana dan simpel menjadi pusat perhatian beberapa peneliti. Berbagai macam polimer telah dikembangkan, akan tetapi pada umumnya menggunakan polimerisasi dengan metode post-modification. Pada penelitian ini, polimer organik yang mengandung amonium kuartener dalam bentuk monolit dengan polimerisasi yang menggunakan suhu tunggal dan sederhana telah dilakukan. 2-(Methacryloyloxy)-N,N,N-trimethylethanaminium chloride digunakan sebagai monomer dan ethylene dimethacrylate sebagai crosslinker. Polimerisasi dilakukan dengan metode one-pot aaproach di dalam kapiler silika (100 mm, 0,32 mm i.d. x 0,45 mm o.d.). Untuk mendapatkan makropori yang sempurna, isopropil alkohol, PEG 400 dan etanol digunakan sebagai porogen. Karakterisasi morfologi permukaan dilakukan dengan menggunakan Scanning Electron Microscope (SEM), dan Fourier Transform Infrared Spectroscopy (FTIR) untuk mengidentifikasi gugus fungsi gugus amina yang terdapat pada polimer. Ukuran distribusi pori pada polimer berkisar antara 1,29 sampai 3,33 µm.
Distribution of Fecal Indicator Bacteria in Sediment of Local Open Channels Receiving Johkasou Effluent Joni Aldilla Fajri; Toshiro Yamada; Ahmad S. Setiyawan; Fusheng Li
Jurnal Sains & Teknologi Lingkungan Vol. 9 No. 2 (2017): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol9.iss2.art1

Abstract

Onsite wastewater treatment system named Johkasou has been widely applied in the Japanese rural areas, which the effluent is mainly discharged into stream channels. However, Johkasou effluent would potentially be a source of contamination that can deteriorate water and sediment quality of the receiving downstream network. In order to identify the effect of Johkasou effluent particularly in sediment, a study on the distribution of fecal indicators (F-RNA bacteriophages, total coliform (TC), and Escherichia coli [E. coli]) in several sediment spots of local open channels receiving Johkasou effluent was conducted. The results showed that the contents of F-RNA bacteriophages, TC and E. coli in the sediment of open channels were detected in high levels while those contents in the sediment of Johkasou drainage channel were up to two orders magnitude higher than in the open channel. A high number of fecal bacteria in the receiving open channels was majorly influenced by the number of domestic households. Moderate correlations of fecal bacteria indicator with solid sediment and volatile sediment indicate that the sediment particles can be carriers of microbes to the downstream water networks. Therefore, water flushing and hydraulic events are suggested to reduce sediment depth that contained fecal bacteria indicator in the open channel.
Penurunan Kandungan Hidrokarbon Menggunakan Constructed Wetland Reactor Dalam Mengolah Limbah Minyak: Removal of Hidrocarbon Compounds Using Constructed Wetland Reactor to Treat Oily Wastewater Joni Aldilla Fajri; Dewi Wulandari; Awaluddin Nurmiyanto; Aster Rahayu
Open Science and Technology Vol. 1 No. 2 (2021): Open Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/ost.vol1no2.2021.36

Abstract

Limbah minyak dari kegiatan perbengkalan otomotif umumnya dibuang langsung ke drainase sebelum masuk ke dalam badan air terdekat. Limbah minyak mengandung senyawa aromatik, hidrokarbon, logam dan lainnya yang sangat berpotensi merusak lingkungan. Low cost wastewater treatment seperti wetland memiliki efektifitas yang cukup baik untuk mengolah air limbah domestik dan air limbah spesifik. Oleh karena itu, tujuan penelitian ini adalah mengevaluasi kinerja reaktor kontinu wetland kombinasi dengan indigen bakteria dalam mereduksi zat pencemar limbah minyak. Konsorsium indigen bakteri ditambahkan ke dalam reaktor wetland (105 cm x 30 cm x 30 cm) yang terdiri dari kompartement Vertical floating wetland dan constructed wetland dan dioperasikan kontinu selama 30 hari dengan waktu tinggal total 15 hari. Hasilnya menunjukkan bahwa reaktor ini mampu menurunkan konsentrasi minyak-lemak 73-98%, Total Petroleum Hidorkarbon  77-99%, kandungan minyak 67-94%, dan juga minyak dan lemak 49 – 98%. Sehingga dapat disimpulkan, reactor continuous vertical flow wetlands kombinasi dengan indigen bakteri dan tanaman Vetiveria z mampu menurunkan kadar minyak-lemak, dan TPH. Oil and grease wastewater produced by the automotive workshop mainly introduces to the drainage without any prior treatment. Oily wastewater consists of aromatic compound, hydrocarbon, metal, and other contaminates that had major impairments into the environment. Low cost wastewater treatment e.q: wetland has satisfied performance to treat domestic wastewater and industrial wastewater. Therefore, the purpose of this study is to analyze the performance of continue wetland reactor combined with consortium indigenous bacteria to treat oily wastewater. Consortium indigenous bacteria were added to the three compartments in the reactor (105 cm x 30 cm x 30 cm); vertical floating wetland and constructed wetland, and it was operated for 30 days with the hydraulic residence time (HRT) for 15 days. As results, this reactor could reduce the concentration of oil-grease, total petroleum hydrocarbon (TPH), oil content, and oil grease (OG) at the level of 73-98%, 77-99%, and 49 – 98%, respectively. This result indicates that combination of consortium indigenous bacteria enhances the effectivity of reactor continuous vertical flow wetlands in degrading the oil-grease contaminants.
Review: Pengolahan Limbah cair Industri dengan Menggunakan Silika: A Review: Industrial Liquid Waste Treatment Using Silica Aster Rahayu; Maryudi; Farrah Fadhillah Hanum; Joni Aldilla Fajri; Winda Dwi Anggraini; Ummi Khasanah
Open Science and Technology Vol. 2 No. 1 (2022): Open Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/ost.vol2no1.2022.38

Abstract

Pada era industrial, limbah cair industri menjadi salah satu masalah yang serius. Limbah cair industri yang tidak sesuai dengan baku mutu dibuang secara langsung ke badan air yang mengakibatkan pencemaran lingkungan. Karenanya pengolahan limbah harus ditangani sejak awal selama proses produksi. Salah satu material yang sering digunakan sebagai adsorben dalam proses adsorpsi yaitu silika. Silika merupakan adsorben yang memiliki struktur geometri pori, sifat kimia pada permukaan dapat dimodifikasi dan sangat mudah diproduksi. Silika dapat diperoleh dari beberapa sumber diantaranya yaitu sekam padi dari limbah hasil pertanian. Review ini bertujuan untuk mengetahui kemampuan silika sebagai bahan pengolahan limbah industri. Silika dapat digunakan dalam proses pengolahan limbah cair beberapa industri sepeti batik, laundri, industri tahu dan beberapa limbah industri lainnya. Silika paling efektif diaplikasikan pada pengolahan limbah industri tekstil. Silika mampu mengurangi kekeruhan dan kadar warna limbah cair industri khususnya tekstil. Nilai koefisien penurunan tertinggi sebesar   96,86% untuk warna, sedangkan kekeruhan sebesar 99,31%. Nilai ini didapatkan dari berat campuran silika 5 gram (28,65 %wt), volume limbah 100% dengan kandungan warna 1,123 Co dan kekeruhan 180,5 NTU. Industrial liquid waste is one of the serious problems in the industrial era. Disposal of industrial liquid waste that is not in accordance with quality standards directly into water bodies can cause environmental pollution. Therefore, wastewater treatment must be handled early during the production process. Silica is one of the most commonly used adsorbents in the adsorption process. This is due to the ease with which silica is produced and the surface properties (pore geometry structure and surface chemistry) that can be modified. Silica can be obtained from several sources, one of which is rice husk which is a waste from agriculture. This review aims to determine the role of silica as an industrial wastewater treatment material. From several articles obtained, silica can be used in the processing of wastewater from batik industrial, laundri industrial, tofu industrial and several other industries. Silica is most effectively used in the textile industry wastewater treatment. Silica can reduce the color and turbidity of the textile industry wastewater. The highest removal coefficient value is 96.86% for color and 99.31% for turbidity obtained from a 5-gram (28.65 %wt) silica mixture mass, 100% waste volume with color content of 1.123 Co and turbidity of 180.5 NTU.  
Synthesis of Silica-PEG By Physically Coating With PEG 4000 For Absorption of Ion Nitrate Aster Rahayu; Maryudi Maryudi; Joni Aldilla Fajri; Lee Wah Lim; Nuraini Nuraini
Elkawnie: Journal of Islamic Science and Technology Vol 8, No 2 (2022)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v8i2.14680

Abstract

Abstract: All production activities will eventually produce waste, especially liquid waste. The nitrate ion (NO3-) is one of the substances in liquid waste that can have a significant impact on water systems and human health. Several methods can be used to treat the nitrate contained in the water, such as adsorption, phytoremediation, and wetland treatment. One of its methods was adsorption. The silica was modified with polymer due to its huge carbon chain. This research was focused on optimizing the ability of silica-based materials using PEG by physically coating them since PEG has a long carbon chain that could be transformed into a helix. In this research, the adsorbent will be prepared from modified silica gel with PEG 4000 by physical coating. Several parameters will be observed, including the effect of coating time, silica-PEG ratio, and PEG concentration. The capacity of silica-PEG to absorb NO3- is being studied. The characterization of functional group content in silica-PEG was carried out by Fourier Transform Infrared (FTIR). The study results show that the coating time was 10 minutes with the ratio of silica to PEG of 1:5, and the concentration of PEG used was 15%, indicating the optimum performance of silica-PEG when used as an absorbent, which achieved 84.44 % nitrate removal. An increase in the absorption capacity of silica-PEG demonstrates the ability of silica-PEG as a porous material. It was compared to silica gel without the PEG coating process, which was 9.09% to 84.44%.Abstrak: Semua kegiatan produksi pada akhirnya akan menghasilkan limbah, terutama limbah cair. Limbah cair biasanya akan bermuara di sungai dan berakhir di laut. Salah satu zat dalam limbah cair adalah ion nitrat (NO3-) yang mana dalam jumlah banyak dapat mengganggu sistem perairan dan kesehatan. Beberapa metode dapat digunakan untuk mengolah nitrat yang terkandung dalam air, seperti adsorpsi. Salah satunya dimodifikasi dengan polimer karena memiliki rantai karbon yang besar. Penelitian ini dikonsentrasikan untuk menyelidiki optimalisasi kemampuan silika dengan PEG dengan pelapisan fisik karena PEG memiliki rantai karbon panjang yang dapat bertransformasi menjadi heliks. Dalam penelitian ini, adsorben akan dibuat dari silika gel termodifikasi dengan PEG 4000 dengan pelapisan fisik. Beberapa parameter yang akan diamati antara lain pengaruh waktu pelapisan, rasio silika-PEG, konsentrasi PEG, dan temperatur pelapisan. Kinerja silika-PEG untuk menyerap NO3- diselidiki. Karakterisasi kandungan gugus fungsi pada silika-PEG dilakukan dengan Fourier Transform InfraRed (FTIR). Hasil penelitian menunjukkan bahwa waktu pelapisan adalah 10 menit dengan perbandingan silika dan PEG 1:5, dan konsentrasi PEG yang digunakan adalah 15%, menunjukkan kinerja silika-PEG yang optimum bila digunakan sebagai penyerap NO3-. Kemampuan silika-PEG sebagai bahan berpori dibuktikan dengan peningkatan kapasitas penyerapan silika-PEG dibandingkan silika gel tanpa proses pelapisan PEG.
Co-Authors Ahmad S. Setiyawan Awaluddin Nurmiyanto, Awaluddin Dewi Wulandari, S.Hut., M.Agr., Ph.D Farrah Fadhillah Hanum Fusheng Li Lee Wah Lim Lee Wah Lim Maryudi Maryudi Maryudi Nuraini Nuraini Rahayu, Aster Siti Jamilatun Toshiro Yamada Toyohide Takeuchi Ummi Khasanah Winda Dwi Anggraini