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All Journal JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Elemen INTEK: Jurnal Penelitian Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Reswara: Jurnal Pengabdian Kepada Masyarakat Distilat: Jurnal Teknologi Separasi Jurnal Pengabdian Polinema Kepada Masyarakat Automotive Experiences Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Teknik Mesin, Industri, Elektro dan Informatika Jurnal Teknik Ilmu dan Aplikasi Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Jurnal Polimesin Jurnal Pengabdian Kepada Masyarakat Venus: Jurnal Publikasi Rumpun Ilmu Teknik Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Haris Puspito Buwono
Jurusan Teknik Mesin, Politeknik Negeri Malang
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Pengaruh Penambahan Surfaktan Estolida dan Digliserida pada Pelumas Minyak Goreng terhadap Temperatur Mesin dan Daya Alfianto Alfianto; Haris Puspito Buwono
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 3 (2024): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v2i3.453

Abstract

Lubricating oil is a type of fluid needed by a machine to carry out work steps. Significant changes in the temperature of the lubricating oil viscosity until it is too low makes the engine components less lubricated, which causes the engine components to heat up quickly because the friction between the metals that occurs becomes greater. Lubricant that is of poor quality can cause deposits to appear in the engine room which results in the engine working harder. The aim can be achieved in this research by varying the lubricating oil with a mixture of Estolide and Diglyceride surfactant percentages of (2.5%, 5% and 7.5%). This test was carried out on a petrol motorbike with a combustion chamber volume of 125cc with standard conditions. The data that will be taken in this research includes engine temperature and power. The power testing method using a dynamometer and lubricant with cooking oil mixed with 7.5% estolide surfactant after heating produces an average value of 6.52 HP which has a higher average value than oil with a value of 5.37 HP
Pengaruh Surfaktan Polysorbate dan Lesitin Pada Pelumas Minyak Goreng Terhadap Temperatur Mesin dan Daya Muhammad Rifqi Aditya Irawan; Haris Puspito Buwono
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 3 (2024): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v2i3.455

Abstract

The development of the automotive world to date has grown rapidly, especially two-wheeled vehicles. Large temperature changes in lubricating oil viscosity, even if the value is too low, will reduce the lubrication of engine parts, increase friction between metals, and cause engine parts to heat up quickly. Efforts to control and overcome excessive engine heat can replace mineral-based lubricating oils with environmentally friendly and biodegradable lubricating oils. The purpose of this study is to determine the effect of using a mixture of cooking oil and surfactants C64H124O26 and C42H80NO8P as engine lubricants on the power and temperature produced by motorized vehicles. The independent variables of this research are RPM variation and mixture of pure cooking oil with lecithin and polysorbate surfactant (2.5%, 5%, 7.5%). The dependent variables are engine temperature and power. The control variables of this research are testing at room temperature, 4 stroke 125CC matic vehicle, and Raw Material using Palm cooking oil. The test method uses an infrared thermo gun for temperature and Dyno test for the highest power test on the type of Cooking Oil + Polyosrbate 7.5% with an average overall power of 5.872, then for the lowest temperature on the type of Cooking Oil + Polysorbate 2.5% with an average value of 86.2ºC.
Analisis Pengaruh Kecepatan dan Waktu Pengadukan terhadap Homogenitas Sampah Organik dalam Proses Pengomposan Dimas Vrisnanda Yulio Diva Prakasa; Haris Puspito Buwono
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 1 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i1.707

Abstract

The problem of household waste, which accounts for 50-70% of the total waste in Indonesia, mainly in the form of organic waste such as food and vegetable scraps, is a major challenge in environmental management. Composting is an effective method of managing organic waste by turning it into compost. However, organic waste management in Indonesia is still minimally practiced because it is considered to have no economic value. A 50 kg capacity composter machine equipped with a vertical mixer and using an electric motor can increase composting efficiency. This study aims to analyze the feasibility of composter machines and to analyze the effect of speed and mixing time on composter machines on the homogeneity of organic waste. The research method used is quantitative experimental with factorial experimental design (DOE) to analyze the effect of speed and stirring time on the composter machine on the homogeneity of organic waste. The stirring speed variations tested were 30, 45, and 60 RPM, with mixing times of 20, 30, and 40 minutes. The results showed that the single mixer composter machine proved to be feasible and reliable in producing homogeneous organic waste, with a high process capability value of 5.86. The use of mixing speed from 30 RPM to 60 RPM and mixing time from 20 minutes to 40 minutes significantly increased the homogeneity of organic waste, with the highest value of 97.54% at 60 RPM speed for 40 minutes.
Pengaruh Kecepatan Pengaduk Ganda dan Waktu Pengadukan pada Mesin Pencampur terhadap Homogenitas Sampah Organik dalam Proses Pengomposan Raka Galang Rustio Wardoyo; Haris Puspito Buwono
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 4 No. 1 (2025): JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v4i1.4745

Abstract

Waste is an unavoidable problem along with increasing population activity due to population growth, which causes the amount of waste to increase, especially from traditional markets, tourist areas, dense settlements, and public facilities. In Malang City, waste in 2023 is estimated to reach 778.34 tons, so proper and environmentally friendly management is needed, one of which is by processing organic waste into a homogeneous compost mixture using a mixing machine. This study aims to analyze the effect of double mixer speed and mixer time on the mixing machine on the homogeneity of organic waste in the composting process. The research method used is quantitative experimental with factorial experimental design (DOE) for the effect of double mixer speed and mixer time on the homogeneity of organic waste in the composting process. The double mixer speed variations tested were 20, 45, and 60 RPM, with mixing times of 20, 30, and 40 minutes. The results showed that the double mixer speed and stirring time had a significant effect on the homogeneity of organic waste in the composting process, with an optimal increase in homogeneity occurring at a speed of 60 RPM and a duration of 40 minutes. Higher speeds accelerate particle distribution, while sufficient mixing time ensures even distribution, thereby increasing the efficiency of microbial decomposition.
EFEKTIVITAS BENTUK PADATAN KAPORIT DALAM PENGOLAHAN LIMBAH CAIR BAHAN ADITIF INDUSTRI KONSTRUKSI TERHADAP TURBIDITY DAN TOTAL SUSPENDED SOLID Ladini, Azizah; Buwono, Haris Puspito; Arta, I Komang Budi
DISTILAT: Jurnal Teknologi Separasi Vol. 10 No. 4 (2024): December 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v10i4.6619

Abstract

Limbah cair industri konstruksi mempunyai kandungan turbidity, total dissolved solid (TDS) dan total suspended solid (TSS) yang tinggi dan dapat berdampak negatif pada lingkungan jika tidak diolah dengan baik. Pengolahan air limbah konstruksi yang efektif diperlukan untuk menurunkan kadar turbidity, TDS dan TSS agar memenuhi baku mutu dalam Peraturan Pemerintah Republik Indonesia No. 22 Tahun 2021 tentang penyelenggaraan perlindungan dan pengelolaan lingkungan hidup. Tujuan penelitian ini adalah mengurangi dampak lingkungan dengan mengembangkan metode efektif untuk polusi air dan tanah akibat limbah industri. Metode ini dilakukan secara koagulasi flokulasi dengan penambahan kaporit, tawas, dan lempung pada limbah PT Additon Karya Sembada, Tbk. Limbah cair bahan aditif memiliki nilai derajat keasaman (pH) yang konstan yaitu 7. Hasil penelitian menunjukkan bahwa penambahan kaporit dan tawas berbentuk padatan lebih efektif dalam menurunkan turbidity, TDS, dan TSS. Serbuk kaporit yang ditambahkan menunjukan nilai turbidity, TDS, TSS secara berturut-turut  mencapai nilai 4,47 NTU, 1960 ppm, 8 mg/L pada 0,75 gram kaporit dan 1 gram tawas, dan pada penambahan larutan kaporit menunjukan nilai turbidity, TDS, TSS secara berturut-turut mencapai nilai 11,7 NTU, 3360 ppm, 2 mg/L pada 110 mL kaporit dan 10 mL tawas. Nilai-nilai tersebut menunjukkan bahwa kualitas air limbah telah memenuhi PP No. 02 Tahun 2021 golongan 2 kecuali pada parameter TDS.
PENURUNAN NILAI TURBIDITY DAN TOTAL SUSPENDED SOLID PADA LIMBAH CAIR INDUSTRI ADDITIVE CHEMICAL CONSTRUCTION MENGGUNAKAN KOAGULAN TAWAS Pradelia, Gading Aureza; Buwono, Haris Puspito; Artha, I Komang Budi
DISTILAT: Jurnal Teknologi Separasi Vol. 11 No. 1 (2025): March 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v11i1.6926

Abstract

Limbah cair industri bahan additive pada chemical construction berasal dari proses pencucian peralatan produksi, yang dapat berpotensi menurunkan kualitas air dan lingkungan apabila tidak diolah secara khusus. Komposisi utama limbah cair ini adalah garam lignosulfonat dan polikarboksilat eter, berwarrna coklat pekat dan berbau kurang sedap. Penelitian ini dilakukan untuk mengolah limbah cair di PT Additon Karya Sembada yang merupakan industri bahan additive pada chemical construction. Metode pengolahan limbah cair yang digunakan adalah koagulasi-flokulasi. Metode ini meliputi penambahan tawas, kaporit, dan lempung disertai pengadukan pada limbah cair.  Setelah limbah diolah, dilakukan pengujian terhadap pH, turbidity, TDS, dan TSS air limbah. Hasil penelitian menunjukkan bahwa pada penambahan koagulan 1 - 6 gram tawas, 1-2 gram kaporit, dan 1 gram lempung, diperoleh hasil terbaik adalah 1,5 gram tawas, 2 gram kaporit, dan 1 gram lempung, dengan nilai pH 7, turbidity 2,97 NTU, TDS 2675 ppm, dan TSS 0 mg/L. Selanjutnya, parameter terbaik tersebut diaplikasikan pada berbagai konsentrasi yang terdapat pada 5 bak penampungan limbah cair. Hasil terbaik pada bak penampungan 1 adalah nilai pH 7, turbidity 7,27 NTU, TDS 3600 ppm, dan TSS 6 mg/L. Kualitas air yang dihasilkan telah sesuai dengan Peraturan Pemerintah mengenai baku mutu air Kelas 1 untuk kriteria bau, pH, turbidity, dan TSS, namun TDS belum memenuhi kriteria tersebut.
PENINGKATAN PENGETAHUAN KELOMPOK TARUNA TANI DESA JATIGUWI KECAMATAN SUMBERPUCUNG, KABUPATEN MALANG DALAM KOMERSIALISASI PRODUK PUPUK ORGANIK Suharti, Profiyanti Hermien; Santosa, Sandra; Iswara, Mochammad Agung Indra; Amrullah, Ustman Syah; Buwono, Haris Puspito; Hapsari, Ratih Indri
Reswara: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2024)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v5i1.3755

Abstract

Kelompok Taruna Tani Desa Jatiguwi merupakan salah satu kelompok tani yang beranggotakan karang taruna Desa Jatiguwi, Kecamatan Sumberpucung, Kabupaten Malang dimana dibentuk sebagai upaya aparat Desa Jatiguwi dalam mengembangkan kemandirian para petani dalam mencukupi kebutuhan pupuk. KTT Desa jatiguwi memanfaatkan sampah biomassa di lingkungannya sebagai bahan baku untuk membuat pupuk organik. Langkah ini diharapkan dapat meminimalisasi sampah organik dan menghasilkan produk yang bernilai ekonomis. Pupuk organik yang dihasilkan sudah diujicoba pada tanaman dan hasilnya cukup baik. Permasalahan yang dihadapi oleh KTT Desa Jatiguwi yaitu belum memiliki pemahaman yang cukup dalam mendapatkan izin edar, layak jual, dan merk dagang untuk produk pupuk organik. Agar masyarakat memahami cara memasarkan produk yang dibuatnya sehingga dapat menjualnya dengan aman, legal, dan memperoleh pangsa pasar yang besar. Kegiatan PPM diawali dengan pre-test bagi peserta untuk mengukur pemahaman mitra terhadap pemasaran pertanian. Setelah itu dilakukan kegiatan sosialisasi pada tahap pemasaran produk kepada mitra yang dilanjutkan dengan pertukaran dan tanya jawab pada saat proses pengurusan izin edar pupuk organik. Kegiatan PPM diakhiri dengan post-test untuk menggali pemahaman masyarakat setelah mengikuti sosialisasi. Hasil skor pre-test dan post-test diolah dengan analisis uji T berpasangan, diperoleh hasil |????ℎ????????????????????|> ???????????????????????? dan nilai ???? ????????????????????< ???? maka ????0 ditolak yang berarti terdapat peningkatan nilai post-test dibandingkan dengan pre-test agar sosialisasi dapat terlaksana dengan sukses.
Pengaruh Busi, Pilot Jet 35, dan Campuran Bahan Bakar dengan Kadar Alkohol terhadap Daya pada Mesin Motor 110 CC Menggunakan Karburator Aftermarket Dzaky Darma Saputra; Bambang Irawan; Haris Puspito Buwono; Nike Nur Farida
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i4.988

Abstract

Dependence on fossil fuels, such as gasoline and diesel, has become a global issue that affects environmental sustainability and energy security. Increasing greenhouse gas emissions, decreasing natural resource reserves, and instability of global energy prices encourage the need for innovation in motor vehicle fuel systems. This study aims to assess fuel efficiency and engine performance on a 110 CC motorcycle with a standard compression of 10.7:1, by utilizing a mixture of RON 90 gasoline and alcohol. The main focus of the study is to compare the effect of varying alcohol content on engine power output, with mixtures of E12.5, E17.5, and E22.5. The method used is an experimental method with three variables, namely the independent variable (type and content of fuel mixture), the dependent variable (engine power), and the control variables (engine condition, temperature, and testing method). Testing was carried out using a combination of iridium spark plugs and standard spark plugs, as well as variations in Pilot Jet sizes 34 and 35 on aftermarket carburetors. Each combination was tested to determine its effect on the maximum engine power. The results showed that a blend of E12.5 fuel with Pilot Jet 35 and iridium spark plugs produced the highest power output compared to other tested combinations. This combination was proven to optimize combustion in the combustion chamber, thereby improving engine efficiency and performance. Conversely, increasing the alcohol content above E12.5 did not provide a significant increase and even tended to decrease power due to alcohol's lower calorific value than gasoline. The conclusion of this study is that the use of an aftermarket carburetor with Pilot Jet 35 and iridium spark plugs, combined with an E12.5 fuel blend, can be an effective alternative for improving the performance of a 110cc motorcycle. These findings are expected to serve as a reference for the development of more efficient and environmentally friendly blended fuel technology.
The Hardness of Aluminum Oxide Surface in Anodized Coloring Under Low Voltage Buwono, Haris Puspito; Hadi, Syamsul; Muzaki, Mochamad; Subagiyo, Subagiyo; Agustriyana, Lisa; Hadi, Samsul; Nurchajat, Nurchajat
INTEK: Jurnal Penelitian Vol 6 No 2 (2019): October 2019
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.08 KB) | DOI: 10.31963/intek.v6i2.1522

Abstract

Coloring of aluminum oxide on the Aluminum type AA1100, which is the typical type for household appliances and purposes, through anodizing coloring process by the blue color of commercial printer ink had been successfully performed. The blue color was well adhered and was not easy to be removed by physical treatment such as wiping. The anodize coloring process includes chemical cleaning of aluminum surface, the formation of pores in the sulfuric acid solution at a specific current and a specified duration of time, coloring and closing the pores via sealing. It also shows the anodizing process increases aluminum oxide surface hardness increased by applying higher current density, and longer duration time of the process. The aluminum oxide hardness was in harmony to the duration of time processing, and current density; however, not in line to a concentration of the solution. The maximum hardness of the aluminum oxide layer obtained is 50 kg/mm2. The relation of current density and voltage, the effect of current density and sulfuric acid concentration toward aluminum oxide hardness were analyzed. Moreover, the difference of aluminum oxide hardness of the front side and backside to cathode also discussed.
DESAIN DAN PEMBUATAN TULISAN IDENTITAS GEDUNG BERHURUF 3 DIMENSI DARI STAINLESS STEEL Hadi, Syamsul; Muzaki, Mochamad; Irawan, Bambang; Purwoko, Purwoko; Buwono, Haris Puspito; Murdani, Anggit
Jurnal Pengabdian kepada Masyarakat Vol. 11 No. 1 (2024): JURNAL PENGABDIAN KEPADA MASYARAKAT 2024
Publisher : P3M Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/abdimas.v11i1.5254

Abstract

This community service aims to increase clarity and beauty for all guests who head to the hall in RW 06 Kelurahan Tasikmadu Malang. The method used is deliberation with residents and building managers to determine the design/technique of the construction model for the posts to be installed in the Hall, making posts from stainless steel in the form of plates (stainless steel) and installing stainless steel letters on the west side of the outer wall of the Hall, assessing the robustness and the beauty of the placement, and submission to the Head of RW 06 where the installation of the writing is in his working area. By installing stainless steel letters in the Hall, it is hoped that identity can be made clear to all guests or all parties who pass in front of it. Thus there is a synergy between State Polytechnic of Malang and community members in obtaining satisfaction of the usefulness of assistance and the beauty of the environment in RW 06 Tasikmadu, Lowokwaru, Malang city.
Co-Authors Abdul Chalim, Abdul Agus Dani Akhlis Rizza, Muhammad Alfianto Alfianto Amrullah, Ustman Syah Amrullah, Utsman Syah Anggit Murdani Ariani Ariani Arta, I Komang Budi Artha, I Komang Budi Asrori Asrori Bambang Irawan Bambang Irawan Daroini, Moch. Fauzun Deny Arisandi Diana Rachmawati Dimas Vrisnanda Yulio Diva Prakasa Dzaky Darma Saputra Eko Yudiyanto Elfin Lailatun Nur'aini Elka Faisal Fatkhur Rohman Hapsari, Ratih Indri Hartono, Moh Iswara, Mochammad Agung Indra Joko Waluyo Kris Witono Ladini, Azizah Lisa Agustriyana Lisa Agustriyana Machida, Masato Marta, Akbar Andika Mochammad Agung Indra Iswara Mochammad Muzaki Mohammad Noor Hidayat Muhammad Muzakki Muhammad Rifqi Aditya Irawan Muslim, Ilham Taufik Muzaki, Mochamad Nike Nur Farida Nugroho, Pipit Wahyu Nurchajat Nurchajat, Nurchajat Nurlia Pramita Sari Pondi Udianto Pradelia, Gading Aureza Profiyanti Hermien Suharti Purwoko Purwoko Purwoko Purwoko Raka Galang Rustio Wardoyo Ratih Indri Hapsari Riyanto Heri Nugroho Rucita Ramadhana Samsul Hadi Sandra Santosa Sarjiyana Sarjiyana Satworo Adiwidodo Sembiring, Rinawati Subagiyo Subagiyo Sulistyono Sulistyono Syamsul Hadi Syamsul Hadi Syamsul Hadi Ustman Syah Amrullah Weddakarti, Eva Wicaksana, Hangga