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PELATIHAN DAN PEMBUATAN MATERI UJI KOMPETENSI (MUK) SKEMA PENANGGUNG JAWAB PENGOPERASIAN PENGOLAHAN AIR LIMBAH (POPAL) Hidayatulloh, Irwan; Budiastuti, Herawati; Soeswanto, Bambang; Kusumawati, Endang; Trirahayu, Dhyna Analyes; Paramitha, Tifa; Ramadhani, Laily lsna; Elizabeth, Lidya
Jurnal Difusi Vol. 7 No. 2 (2024): Jurnal Difusi
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/difusi.v7i2.5561

Abstract

Ada 5 (lima) unit kompetensi dari draft skema okupasi Penanggung Jawab Pengoperasian Pengolahan Air Limbah (POPAL) yang sedang dibuat dan sekaligus akan diberikan dalam pelatihan bagi guru-guru SMK Negeri 7 Bandung oleh dosen-dosen Teknik Kimia, Politeknik Negeri Bandung. Unit kompetensi yang dimaksud yakni Mengoperasikan Instalasi Pengolahan Air Limbah (IPAL), Menilai Tingkat Pencemaran Air Limbah, Melakukan Perawatan IPAL, Mengidentifikasi Bahaya Pengolahan Air Limbah, dan Melakukan Tindakan Keselamatan Kerja terhadap Bahaya dalam IPAL. Dengan demikian para asesor di kedua institusi pendidikan ini dapat memiliki kompetensi dalam membuat MUK dimana MUK menjadi persyaratan wajib dalam pengusulkan draft skema yang akan diajukan untuk dilisensi oleh Badan Nasional Sertifikasi Profesi (BNSP) Indonesia. Hingga saat ini, terdapat beberapa kegiatan yang telah dilaksanakan. Pertama, koordinasi dan pertemuan telah dilakukan dengan pihak mitra untuk sinkronisasi pelaksanaan kegiatan. Kedua, koordinasi internal tim PkM untuk membahas pembagian tugas, rencana pembuatan MUK, dan rencana pelaksanaan pelatihan bagi para peserta pelatihan. Ketiga, merupakan pelaksanaan pelatihan mengenai pembuatan MUK unit kompetensi 1 dan 2. Keempat, merupakan lanjutan pelakasanaan kegiatan pelatihan mengenai pembuatan MUK untuk unit kompetensi 3, 4 dan 5.
Pengaruh Variasi Komposisi Dan Ukuran Partikel Terhadap Kualitas Briket Tempurung Kelapa Dan Cangkang Kemiri Yasinta, Fatima; Zahra, Salma Amara; Budiastuti, Herawati; Taufiqurohim, Teguh
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 05 (2025): Chemical Engineering Journal Storage (CEJS)-October 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i05.22969

Abstract

Briket merupakan sumber energi alternatif berupa bahan bakar padat yang terbuat dari campuran biomassa. Sumber biomassa yang cukup melimpah salah satunya adalah tempurung kelapa dan cangkang kemiri. Tempurung kelapa memiliki kandungan selulosa sebesar 34% dan hemiselulosa sebesar 21%, sedangkan cangkang kemiri memiliki kandungan holoselulosa sebesar 49,22%. Penelitian ini bertujuan untuk menganalisis pengaruh variasi komposisi dan ukuran partikel terhadap kualitas briket yang terbuat dari campuran tempurung kelapa dan cangkang kemiri. Ukuran partikel yang digunakan dalam penelitian ini 60 mesh, 70 mesh, dan 80 mesh. Variasi komposisi tempurung kelapa dan cangkang kemiri rasio 1:3, 1:1, dan 3:1 dengan massa briket 50 gram. Bahan perekat yang digunakan adalah campuran tepung tapioka dan air dengan konsentrasi 10%. Proses karbonisasi dilakukan pada suhu 400ºC selama 90 menit, pengepresan briket dengan hydraulic press bertekanan 5 ton/cm2 selama 7 menit, dan pengeringan briket dengan suhu 65ºC selama 24 jam. Briket dengan komposisi tempurung kelapa:cangkang kemiri dengan rasio 3:1 dan ukuran partikel 70 mesh menghasilkan nilai parameter uji terbaik dengan diperoleh nilai kalor sebesar 6.373 kal/g, kadar air 2%, kadar abu 2%, kadar zat mudah menguap 43,5%, densitas 1,258 g/cm³, dan kadar karbon terikat 52,5%. Parameter tersebut dibandingkan berdasarkan nilai standar dari SNI 06-3730-1995 dan SNI 01-6235-2000.
Sintesis Biodiesel dari Limbah Biji Alpukat melalui Proses Esterifikasi dan Transesterifikasi Budiastuti, Herawati; Rahmawati, Aisyah Auliya; Susanto, Susy Mardiana; Trirahayu, Dhyna Analyes; Rusdianasari, Rusdianasari
Fluida Vol. 16 No. sp1 (2023): FLUIDA x IRWNS Special Edition
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16isp1.5342

Abstract

The avocado seed is a food waste that contains vegetable oil. The amount of avocado seed waste is very abundant, but there is no optimal processing or utilization. Fossil fuels as an energy source can experience scarcity because these energy sources are non-renewable. This research has important implications in waste management and development of renewable energy sources. One type of renewable energy is biodiesel. Biodiesel is an environmentally friendly alternative fuel made from vegetable oil. The use of biodiesel as an alternative fuel has advantages including being easier to decompose in nature and reducing emissions when compared to diesel oil. One type of plant that can be used as raw material for making biodiesel is avocado. This study aims to utilize avocado seed waste as a raw material for biodiesel synthesis and to test its characteristics that have not been found in previous studies in the form of analysis of acid value, density, and oxidation stability. The method used in the synthesis of biodiesel was esterification and transesterification reactions using methanol solvent with a mole ratio of avocado seeds to methanol of 1:6 and the addition of H2SO4 catalyst as much as 0.5% of the weight of oil for the esterification process and the addition of NaOH catalyst as much as 1% of the weight of oil for the transesterification process. This study complements previous research on biodiesel from avocado seeds and compares the obtained biodiesel characteristics to the Indonesian National Standard (SNI) 04-7182:2015. The final results of this study were 34,61%, 0.98 mg-KOH/g, 977 kg/m3, and 318 minutes for biodiesel yield, acid value, density, and oxidation stability, respectively.
Enhancing Tofu Wastewater Treatment Efficiency with Water Hyacinth Extract Addition in an Anaerobic Sequencing Batch Reactor Laily Isna Ramadhani; Salma Ainun Nabila; Santa Angela; Herawati Budiastuti
Fluida Vol. 18 No. 1 (2025): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v18i1.6164

Abstract

Tofu production results in wastewater containing high levels of organic matter. This wastewater needs to be treated before discharging into water bodies. Anaerobic wastewater treatment is capable to decompose organic compounds in wastewater and can produce biogas. Tofu wastewater has a low C/N ratio (6.51), so it needs to be increased by adding water hyacinth extract. The reactor used is an Anaerobic Sequencing Batch Reactor (ASBR) with cow rumen extract as a starter at a concentration of 7,995 mg MLVSS/L. The concentration of tofu wastewater used was 6,000 mgCOD/L, and water hyacinth extract was added at a concentration ratio of 15:2. This research aims to determine the reduction in COD and cumulative biogas volume gain during tofu wastewater treatment with the addition of water hyacinth extract. The parameters tested in the research were MLVSS, COD, pH, and cumulative biogas volume. The efficiency of reducing COD concentration at the operational stage with adding water hyacinth extract was 87.5%, while the reduction in COD concentration without adding water hyacinth extract was only 56.25%. The cumulative volume of biogas produced for 9 days of operation was 7,300 mL, while the ASBR operation without adding water hyacinth extract was 9,590 mL for 9 days.
The Effect of Coconut Shell Activated Carbon Dosage on the Removal of Remazol Brilliant Blue R Alya Zettira Sayyida Sulaeman; Deika Irham Faza Al-Ghaniy; Herawati Budiastuti; Tifa Paramitha
Jurnal Serambi Engineering Vol. 11 No. 3 (2026): Juli 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Textile wastewater contains Remazol Brilliant Blue R (RBBR), a persistent synthetic dye that is difficult to degrade naturally. This study aimed to characterize coconut-shell activated carbon, determine the most effective adsorbent dose and contact time for RBBR removal, and evaluate Pseudo First Order (PFO) and Pseudo Second Order (PSO) kinetic models. The activated carbon was prepared by carbonization at 700°C for 2 h followed by activation with 10% (w/v) H₃PO₄ for 24 h. Batch adsorption used 100 mL of 50 ppm RBBR at adsorbent doses of 0.5–5 g/L and contact times of 5–60 min at 150 rpm. Adsorbent quality was evaluated according to SNI 06-3730-1995 and RBBR concentration was determined by UV–Vis spectrophotometry at λmax 630 nm. All activated-carbon quality parameters met the standard: moisture 4.52%, ash 2.33%, volatile matter 2.60%, fixed carbon 90.55%, and iodine number 856.58 mg/g. The highest Run-2 removal efficiency was 41.68% at 3 g/L and 60 min, leaving 29.2 ppm RBBR. Neither kinetic model consistently described all doses because qt fluctuated with contact time. PFO showed the highest fit at 4 g/L (R²=0.978), while PSO was highest at 5 g/L (R²=0.851). At the optimum dose of 3 g/L, PSO yielded R²=0.447 and was therefore insufficiently representative. The adsorption behavior was also affected by mass transfer and intraparticle diffusion.
Pengaruh Variasi Massa dan Waktu Kontak Biochar Lumpur IPAL Teraktivasi NaOH terhadap Adsorpsi Cr(VI) Brigita Karin Nainggolan; Danisa Dwi Anggraeni; Herawati Budiastuti; Lidya Risang Ayu
Jurnal Serambi Engineering Vol. 11 No. 3 (2026): Juli 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Air limbah industri tekstil sering mengandung logam berat kromium heksavalen [Cr(VI)] yang bersifat toksik dan karsinogenik sehingga perlu diolah sebelum dibuang ke lingkungan. Penelitian ini mengevaluasi biochar teraktivasi NaOH berbahan baku lumpur IPAL industri makanan ringan sebagai adsorben Cr(VI). Biochar dibuat melalui karbonisasi lumpur IPAL kering pada suhu 500°C selama 2 jam, kemudian diaktivasi menggunakan larutan NaOH 2 M selama 24 jam. Proses adsorpsi batch dilakukan pada 100 mL larutan Cr(VI) 100 ppm dengan pH 2, variasi massa adsorben 3–7 gram, serta waktu kontak 30–90 menit. Morfologi biochar dikarakterisasi menggunakan SEM, sedangkan konsentrasi Cr(VI) dianalisis menggunakan spektrofotometer UV-Vis pada panjang gelombang 540 nm. Hasil SEM menunjukkan bahwa aktivasi NaOH menghasilkan permukaan biochar yang lebih kasar, berongga, dan berdistribusi pori lebih merata dibandingkan biochar tanpa aktivasi. Efisiensi adsorpsi tertinggi sebesar 15,8% diperoleh pada massa adsorben 7 gram dan waktu kontak 60 menit, dengan kapasitas adsorpsi maksimum 0,2201 mg/g; biochar tanpa aktivasi hanya menghasilkan efisiensi 3,3% pada kondisi yang sama. Hasil ini menunjukkan bahwa aktivasi NaOH, massa adsorben, dan waktu kontak berpengaruh signifikan terhadap kinerja adsorpsi biochar lumpur IPAL, meskipun kadar abu dan daya serap iodin biochar masih belum memenuhi baku mutu karbon aktif sesuai SNI 06-3730-1995.
Co-Authors Agustin, Delliana Ahmad Fudholi Ajie Nurhasyim Alviera Wilma Fitrianie Alya Zettira Sayyida Sulaeman Ananda Dea Maharani Bambang Soeswanto Brigita Karin Nainggolan Danisa Dwi Anggraeni Deika Irham Faza Al-Ghaniy Devita Utami Mardiani Efniarsi S. Panggalo Elis Sri Wahyuni Elizabeth, Lidya Endang Kusumawati Haryadi Haryadi Hasna Mutiara Safitri Hidayatulloh, Irwan KURNIASETIAWATI, ANNISA Lidya Risang Ayu Luthfiana Nurfauziah Melina Melina Miranti Nur Arafah Muhari, Emma Hermawati Mukhtar Ghozali Nancy Siti Djenar Nanda Ravenia Amanda Nindhytia Anandy Berliany Nira Aulia Hanifah Nurunnisa Alfi Hidayat Paramitha, Tifa Rachmawati, Anissa Nurul Raden Sukmawati Rahmawati, Aisyah Auliya Ramadhani, Laily Isna Ramadhani, Laily lsna Ririn Rismawati Robby Sudarman Rusdianasari Rusdianasari Rusdianasari Rusdianasari Rusmana Salma Ainun Nabila Santa Angela Sapto Prayogo Sudrajat Harris Abdulloh Susanto, Susy Mardiana Teguh Taufiqurohim TINA MULYA GANTINA Trirahayu, Dhyna Analyes Widiastuti, Endang YANTI SUPRIANTI, YANTI Yasinta, Fatima Yurike Dwiayu Rahmaningsi Zahra, Salma Amara