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All Journal Eksergi: Chemical Engineering Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) ALCHEMY Jurnal Penelitian Kimia Jurnal Distilasi Jurnal Redoks Martabe : Jurnal Pengabdian Kepada Masyarakat WIDYA LAKSANA Jurnal Inovator Barometer Jurnal Teknik Kimia JURNAL SURYA ENERGY Best Journal (Biology Education, Sains and Technology) Jurnal Abdi Insani JURNAL TEKNIK PATRA AKADEMIKA AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Musi Charitas Jurnal Teknik Kimia dan Lingkungan PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Teknologi Riset Terapan SURYA EDUKASI
Mardwita
Program Studi Teknik Kimia, Fakultas Teknik, Universitas Muhammadiyah Palembang
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Degradasi Warna dan pH pada Air Gambut Menggunakan Metode Fotokatalisis TiO2 dengan Variasi UltraViolet Putri, Amelia; Yuliawati, Erna; Mardwita, Mardwita
Jurnal Teknologi Riset Terapan Vol. 2 No. 2 (2024): Juli
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v2i2.5003

Abstract

Purpose: This study aimed to evaluate the effectiveness of TiO? photocatalysis with varying UV light intensities in degrading color, reducing iron content, and improving pH in peat water, which is naturally acidic and rich in organics. Methodology: Peat water was treated using TiO? doses of 1.5 g and 2.5 g under 24 W and 32 W UV lamps for 3–6 h. The analyzed parameters included color (TCU), pH, iron (Fe), and E. coli counts. The experiments used a batch reactor with multiple UV sources to enhance the photocatalytic activity. Results: Color was completely removed (100%) under all treatment conditions. The highest Fe reduction (97.8%) occurred using 1.5 g TiO? under 24 W UV irradiation for 4 h. The highest pH increase (62.33%) was achieved using 2.5 g TiO? under 32 W UV for 6 h, raising the pH from 3.00 to 4.87. E. coli was fully eliminated in all variations. Conclusion: TiO? photocatalysis effectively removed color, iron, and bacteria from peat water. However, although the pH improved, it remained below potable water standards, indicating the need for further treatment. Limitation: The study was limited to laboratory-scale conditions and did not achieve neutral pH levels, requiring additional post-treatment and field validation for practical application. Contribution: This study highlights TiO?/UV photocatalysis as a promising method for advanced peat water treatment. This study offers insights into optimizing treatment parameters for improved water quality in future applications.
MEMBRAN KOMPOSIT POLYVINYLIDENE FLUORIDE/ TITANIUM DIOKSIDA UNTUK PENGOLAHAN LIMBAH CAIR INDUSTRI KELAPA SAWIT Agustina; Erna Yuliwati; Mardwita
Jurnal INOVATOR Vol. 2 No. 2 (2019): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v2i2.124

Abstract

The aim of this research is to develop membrane material and analyse the membrane performance in liquid waste management of CPO industry to separate suspended solids. Conventional waste treatment has not been able to reach the minimum regulatory standards that have been set. Land area constraints and waste management techniques are complex and produce large sludge volumes. Besides specifically for managing liquid organic waste, the difficulty of the process of degradation of waste due to the high quantity and content of contaminants that can reach up to 40,000-120,000 mg / l for COD. In this study composite membrane made by titanium dioxide in the membrane polyvinylidene fluoride was blend very well and suited to remove suspended solids in the wastewater. The optimization result obtained is the addition of TiO2 2% produce maximum flux with the value of 180 L / m2.hr and the percentage of 92% fitration. The results of the filtration process conditions were the total suspended solids (TSS) by 99.63% and ammonium nitrogen (NH3-N) by 92.82% is the ABFR process conditions at 2.25 ml / min, HRT at 276.93 min, MLSS concentration at 4.50 g / L, and the pH at 6.50. So it can be concluded that titanium dioxide resulted the minimise of average poresize and enhance the hydrophilicity of membrane that resulted the maximum flux of this process.
Pengaruh Berat Karbon Aktif Dari Ampas Tebu dan Lama Perendaman Terhadap Kualitas Minyak Goreng Bekas Mardwita; Eka Sri Yusmartini; Nindia Selviana
Jurnal INOVATOR Vol. 5 No. 1 (2022): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v5i1.148

Abstract

The amount of used cooking oil is increasing along with human activities. Used cooking oil that is disposed directly into the environment will give a negative impact on health and the quality of the environment, therefore it is necessary to purify the used cooking oil so that the used cooking oil can be reused. In this study, used cooking oil that has been used with heating time of 3 hrs, 5 hrs, and 7 hrs was used. The used cooking oil was purified using activated carbon made from 100 mesh bagasse with variations in weight of 2.5 g, 5 g, and 7 g, soaking time of activated carbon in used cooking oil were 24 hrs, 48 ​​hrs, and 72 hrs. The analysis used is the analysis of water content, free fatty acid content, and the amount of saponification. The results showed that the water content and saponification rate decreased with the length of contact time and the weight of activated carbon. The lowest free fatty acid content was produced when using activated carbon 7.5 g and contact time for 24 hrs.
Analysis of Heat Transfer on the Effect from Mineral Crust in Evaporator Semi-Kestner Quintuple Effect Triaji, Rahadianto Wahyu; Yusmartini, Eka Sri Yusmartini; Mardwita, Mardwita
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 6 No. 3 (2022)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v6i3.125

Abstract

Indonesia as a large population country has the potential to become one of the largest consumers of sugar in the world. Indonesia's national sugar needs amounted to 3.2 million tons per year while domestic production was around 2 million tons. In the sugar industry, the benefits of evaporator tools are to thicken clear juice whose dissolved solid number is 7 - 11 oBrix into a thickened syrup with a dissolved solid of 55 - 60 oBrix, this process occurs through the process of evaporation of water content contained in the material. In one sugar factory, the type of evaporator used is a Semi-Kestner Evaporator with the quintuple effect principle. One of the biggest challenges of evaporators is the decrease in heat value of the evaporator due to the onset of mineral crust that inhibits heat transfer. On September 7th, 2021 Q evaporator 1 is at 135874.8 Kw and on October 26th, 2021 Q evaporator 1 is at 121399.2 Kw. Based on the results of data observations on the evaporator carried out in September 2021 and October 2021, it can be concluded that the decreased heat transfer will cause the evaporator's performance in evaporating water from the sap material (clean juice) so that the material flow rate is getting bigger. Efforts that can be made to overcome this are to carry out mechanical cleaning or chemical cleaning per 28 days of the grinding process, to remove crusts on the tube calandria evaporator.
Egg Shells as an Adsorbent for the Adsorption of Lead (Pb) and Iron (Fe) Metals Yusmartini, Eka Sri Yusmartini; Mardwita, Mardwita; Atikah, Atikah; Kaswari, Suli Cahaya
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 8 No. 1 (2024)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v8i1.349

Abstract

An eggshell is estimated to have around 10,000–20,000 pores; this condition created a chance for the eggshells to be used as an adsorbent. This research aims to activate egg shells used as an adsorbent. Egg shells were applied as an adsorbent in solutions of lead (Pb) and iron (Fe). Test parameters for adsorption capacity were carried out on the optimum mass and absorption contact time with lead (Pb) and iron (Fe) while using the eggshell waste as an adsorbent. The adsorbent quality of egg shells was tested using parameters such as ash content, water content, and adsorption capacity towards methyl blue. This research aims to utilize egg shells as an adsorbent to absorb lead (Pb) and iron (Fe) content using an adsorption process. There are 3 stages of a method for this research to establish: adsorbent preparation, adsorbent activation, and the adsorption process. The adsorption process was carried out with variations of the mass sample, which are 0.75 grams, 1 gram, 1.25 grams, 1.50 grams, and 2 grams and time variations when contact occurred in 20, 30, 40, 50, and 60 minutes. The outcome of this research showed that the highest adsorption capacity at the optimum mass of Pb metal was 1.5 grams at 98.914% and for Fe metal at 96.386%. The highest adsorption capacity results were influenced by Pb metal contact time in 40 minutes, which was 99.30%, and the best capacity for adsorption of Fe metal was at a contact time in 50 minutes, which was 99.82%.
Efisiensi Thermal Alat Economizer pada Pre-Treatment Section dalam Pengolahan Crude Palm Oil (CPO) Ariyanto, Eko; Alqorni, Muhammad Faris; Mardwita, Mardwita
Eksergi Vol 21 No 1 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i1.9974

Abstract

Dalam industri pengolahan CPO, efisiensi energi pada alat economizer menjadi faktor penting dalam meningkatkan efektivitas produksi. Penelitian ini bertujuan untuk mengevaluasi kinerja alat economizer dalam mentransfer energi panas pada aliran fluida Crude Palm Oil (CPO) dan Refined Bleached and Deodorized Palm Oil (RBDPO). Metode penelitian yang dilakukan adalah pengamatan langsung dengan pengukuran suhu dan aliran fluida, dari data tersebut dihitung heat loss dan evaluasi efisiensi termal pada PT XYZ. Hasil penelitian menunjukkan terjadi fluktuasi temperatur pada aliran masuk dan keluar CPO dan RBDPO. Fluktuasi ini dipengaruhi oleh perubahan variabel aliran fluida yang masuk. Aliran massa RBDPO mengalami peningkatan dari 33.659,98 kg/jam menjadi 36.720 kg/jam, sementara aliran CPO tertinggi pada 37.280 kg/jam. Efisiensi termal alat economizer HE-T521A dengan nilai rata-rata sebesar 89,45%. Efisiensi termal tertinggi dicapai pada tanggal 22 Februari 2023, yaitu mencapai 91,09%, sedangkan nilai terendah terjadi pada tanggal 24 Februari 2023, sebesar 88,58%. Meskipun efisiensi termal masih di bawah target desain 94%, alat ini tetap memberikan efisiensi termal yang relatif baik. Hasil penelitian ini dapat digunakan sebagai dasar untuk perbaikan dan pemantauan lebih lanjut guna meningkatkan efisiensi termal alat sesuai dengan desain yang diharapkan.
SISTEM PENJERNIH AIR METODE AERASI DI KELURAHAN PLAJU DARAT PALEMBANG Netty Herawaty; Kgs. A Roni; Erna Yuliwati; Mardwita Mardwita; Husnul Khotimah
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 12 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i12.4396-4401

Abstract

Plaju Darat merupakan kelurahan terujung dari Kota Palembang yang berbatasan dengan Kabupaten Banyuasin dengan luas daerah 18,50 Ha. Kontur lahan di kelurahan ini berupa tanah rawa dimana 70% dari luas lahan digunakan untuk pertanian rawa dan sisanya untuk pemukiman. Dengan kondisi lahan yang berupa dataran rendah rawa, memunculkan persoalan tersendiri terkait ketersediaan air bersih. Aliran air bersih dari PDAM Tirta Musi memang telah menjangkau daerah ini, namun belum mencukupi kebutuhan masyarakat. Karenanya masih banyak masyarakat yang menggunakan air sumur untuk keperluan sehari-hari. Ketersediaan air bersih yang belum mencukupi meskipun layanan PDAM telah menjangkau daerah ini sehingga masyarakat masih menggunakan air sumur. Dari permasalahan diatas tim Pengabdian Kepada Masyarakat (PKM) Prodi Teknik Kimia Universitas Muhammadiyah palembang melakukan instalasi penjernih air dengan metode aerasi di salah satu pusat ibadah Kelurahan Plaju Darat yaitu masjid Sirajul Munir Sirajul Munir. Metode yang di terapkan dalam pengabdian dimulai dari 1). analisis situasi kelurahan, 2) merancang sistem instalasi penjernih air, 3) menginstalasi sistem penjernih air, 4) pengujian sistem penjernih air, 5) evaluasi hasil pengabdian. Hasil yang di capai berupa tersedianya sistem  penjernih air beserta peralatan pendukungnya guna menjamin keberlangsungan tersedianya air bersih untuk tempat ibadah masjid Sirajul Munir.
Sosialisasi Potensi Daun Pepaya Dan Sirih Sebagai Pestisida Nabati Di Desa Rantau Alai Kabupaten Ogan Ilir Marhaini Marhaini; Dewi Fernianti; Mardwita Mardwita; Ani Melani
Surya Edukasi: Jurnal Pengabdian Masyarakat Vol 2, No 1 (2025): Surya Edukasi : Jurnal Pengabdian Masyarakat
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/se.v2i1.9984

Abstract

Program penghijauan adalah salah satu program sebagai bentuk perintah perlindungan lingkungan untuk menciptakan ruang terbuka hijau (RTH) yang dapat diimplementasikan di desa-desa, perumahan, sekolah, pusat perbelanjaan, dan banyak lagi. Untuk menciptaan lingkungan asri, sehat, dan meminimaisis pencemaran udara, masyarakat umumya menggunakan pestisida kimia untuk mengendalikan hama tanaman.Meskipun efek yang dihasilkan cenderung cepat dalam membasmi hama, pengunaan pestisid ini justru dapat menimbulkan bahaya bagi kesehatan manusia, membuat hama menjadi resisten, serta meninggalkan sisasisa zat berbahaya di lingkungan. Oleh karena itu, sangat penting untuk mengembangkan pestisida nabati yang menggunakan bahan baku dari tanaman sebagai alternatif yang ramah lingkungan. Kegiatan Pengabdian kepada Masyarakat ini dilaksanakan di Desa Rantau Alai, Kabupaten Ogan Ilir, Provinsi Sumatera Selatan. Target kegiatan ini adalah ibu-ibu di desa tersebut, dengan jumlah peserta sekitar 25 orang. Metode yang digunakan dalam kegiatan Pengabdian Masyarakat ini meliputi penyuluhan, diskusi, dan demonstrasi. Setelah penyuluhan dan melihat langsung cara pembuatan pestisida nabati melalui demonstrasi, terlihat adanya peningkatan pengetahuan di kalangan warga, serta minat peserta untuk mencoba membuat pestisida nabati sendiri di rumah. Penggunaan pestisida nabati ini juga lebih ekonomis, mudah didapatkan, dan sederhana dalam cara pembuatannya.
Pemanfaatan Limbah Plastik dan Abu Batu untuk Pembuatan Paving Block Marhaini Marhaini; Mardwita Mardwita; Ani Melani; Ummi Kalsum; Muhammad Arief Karim; Heni Juniar; Dewi Fernianti
Surya Edukasi: Jurnal Pengabdian Masyarakat Vol 2, No 2 (2025): Surya Edukasi : Jurnal Pengabdian Masyarakat
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/se.v2i2.10500

Abstract

Permasalahan sampah plastik dan kondisi jalan lingkungan yang rusak merupakan isu penting di Desa Babatan Saudagar Kec Pemulutan Kab. Ogan Ilir. Sampah plastik rumah tangga seperti kantong kresek dan botol plastik masih banyak dibakar atau dibuang sembarangan, menyebabkan pencemaran dan risiko kesehatan. Di sisi lain, jalan gang lingkungan belum diperkeras dan menjadi sulit dilalui saat musim hujan. Kegiatan pengabdian masyarakat ini bertujuan untuk mengenalkan dan melatih warga membuat paving block dari limbah plastik dan abu batu sebagai solusi infrastruktur dan pengelolaan sampah. Metode pelaksanaan melibatkan sosialisasi, pelatihan, praktik langsung, serta evaluasi. Hasil menunjukkan bahwa warga antusias mengikuti kegiatan, memahami dampak sampah plastik, serta berhasil memproduksi paving block yang layak digunakan untuk perkerasan jalan ringan. Teknologi sederhana ini dinilai mudah diterapkan, ramah lingkungan, dan berpotensi dikembangkan menjadi usaha kecil berbasis daur ulang sampah.
MEMBRAN KOMPOSIT POLYVINYLIDENE FLUORIDE/ TITANIUM DIOKSIDA UNTUK PENGOLAHAN LIMBAH CAIR INDUSTRI KELAPA SAWIT Agustina; Erna Yuliwati; Mardwita
Jurnal INOVATOR Vol. 2 No. 2 (2019): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v2i2.124

Abstract

The aim of this research is to develop membrane material and analyse the membrane performance in liquid waste management of CPO industry to separate suspended solids. Conventional waste treatment has not been able to reach the minimum regulatory standards that have been set. Land area constraints and waste management techniques are complex and produce large sludge volumes. Besides specifically for managing liquid organic waste, the difficulty of the process of degradation of waste due to the high quantity and content of contaminants that can reach up to 40,000-120,000 mg / l for COD. In this study composite membrane made by titanium dioxide in the membrane polyvinylidene fluoride was blend very well and suited to remove suspended solids in the wastewater. The optimization result obtained is the addition of TiO2 2% produce maximum flux with the value of 180 L / m2.hr and the percentage of 92% fitration. The results of the filtration process conditions were the total suspended solids (TSS) by 99.63% and ammonium nitrogen (NH3-N) by 92.82% is the ABFR process conditions at 2.25 ml / min, HRT at 276.93 min, MLSS concentration at 4.50 g / L, and the pH at 6.50. So it can be concluded that titanium dioxide resulted the minimise of average poresize and enhance the hydrophilicity of membrane that resulted the maximum flux of this process.
Co-Authors Agustina Agustina . Alqorni, Muhammad Faris Ani Melani Ary Rahmady Pratama Ary Rahmady Pratama Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Aseptianova Atikah Atikah Atikah Atikah Azzahra Aprilia Rosa Eka Sri Yusmartini Eko Ariyanto Elfidiah Erna Yuliwati Erna Yuliwati Erna Yuliwati Erna Yuliwati Fernianti, Dewi Fitri , Jannatul Galih Abriansyah Heni Juniar Husnul Khotimah Ikbal Oktaviansyah Innike Abdillah Fahmi Junanda Marza Kaswari, Suli Cahaya Kgs. A Roni Khuluqa, M Afif Al Ahsan Lolita Safitri Marhaini Marhaini Marhaini Marhaini, Marhaini Merisha Hastarina Meylinda Rahayu Muhammad Arief Karim Muhammad Djoni Bustan Muhammad Djoni Bustan Muhammad Dzaky Muzhaffar Netty Herawaty Nidya Wisudawati Nindia Selviana Parwanti, Sri Rahadianto Wahyu Triaji Rifdah, Rifdah Rifdah, Rifdah Rivaldo, M. Chobind Robiah, Robiah Rurry Patradhiani Sri Haryati Sri Haryati Suli Cahaya Kaswari Sulton Nawawi Suranda, Arief Suryati, Linda Wahyu Triaji Rahadianto Yoga Yuniadi Yuliawati, Erna Yusmartini, Eka Sri Yusmartini Zuber Angkasa