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All Journal JURNAL TEKNOLOGI LINGKUNGAN Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Jurnal Inovasi Pendidikan dan Sains Lowland Technology International Prosiding Seminar Nasional Teknologi Industri Berkelanjutan
Irwan Ridwan Rahim
Department Of Environmental Engineering, Faculty Of Engineering, Universitas Hasanuddin
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation

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Studi Karakteristik Limbah Padat Domestik di Kota Makassar Studi Kasus Perumahan Bougenville Panakukang Mas Irwan Ridwan Rahim; Mery Selintung
Jurnal Penelitian Enjiniring Vol 20 No 2 (2016)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.773 KB)

Abstract

Pertambahan jumlah penduduk serta perubahan pola konsumtif dan gaya hidup manusia berdampak pada meningkatnya jumlah sampah. Pertambahan volume dan keberagaman karakteristik sampah yang semakin meningkat membutuhkan penanganan dan pengelolaan yang baik untuk mengantisipasi timbulnya dampak negatif terhadap lingkungan. Sampai saat ini manajemen pengelolaan persampahan khususnya di daerah perumahan masih bertumpu pada proses “kumpul-angkut-buang”. Peran serta masyarakat masih sangat kurang terkait pengelolaan persampahan dalam upaya mengurangi volume timbulan sampah di Tempat Pembuangan Akhir (TPA). Penelitian ini menganalisis karakteristik fisik dan jumlah timbulan sampah serta pengeloaan sampah pada kawasan Perumahan Bougenville Panakukkang Mas. Metode penelitian yang digunakan berdasarkan SNI 19-3964-1994 tentang Metode Pengambilan dan Pengukuran Contoh Timbulan Sampah Perkotaan. Hasil penelitian mengenai karakteristik fisik sampah yaitu rata-rata timbulan sampah adalah 2,49 ltr/org/hari atau 0,39 kg/org/hari dengan densitas sampah 0,16 kg/ltr. Komposisi sampah terbesar adalah sampah sisa makanan 64,0% dan yang terkecil adalah sampah kulit 0,1%. Pengelolaan sampah di Perumahan Bougenville Panakukkang Mas masih berpola kumpul-angkut-buang ke TPA Tamangapa Antang, belum ada upaya koordinasi dalam mengelola sampah dan partisipasi warga yang masih rendah.
Effect of Fly Ash as Partial Replacement of Cement in Aggressive Environment Irwan Ridwan Rahim
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.908

Abstract

Based on the Appendix I of Peraturan Pemerintah RepublikIndonesia No. 101 year of 2014 on the management ofHazardous and Toxic waste, fly ash is categorized asHazardous and Toxic waste with a waste code B409. Fly ashcan be used as a cement replacement material in themanufacture of concrete because it contains alumina and silicawhich can be used as construction raw material. The cost ofmaking fly ash mortar is slightly more expensive thanconventional mortar. It is because of mortar fly ash useschemical activators. Several literature reviews show that fly ashbasedmortar having good mechanical character, power andgood performance in acidic and sulfate environments. In thisresearch, fly ash mortar was made using curing (treatment) thatis 24 hour and 48 hours of curing oven. In this researchsimulated on aggressive environment that is 5% of H2SO4 and10% of HCl for 0, 7, 14, and 28 days. Due to functioning as abuilding construction material, it is necessary to test the loss ofcompressive strength and weight loss. The test was performedfor 0, 7, 14 and 28 days with the result: 1) fly ash mortar hadloss of compressive strength and optimum weight loss at theage of 7 days each on the 24-hour of curing oven and 48-hourof curing oven.2) although the cost the production of fly ashmortar in general is slightly more expensive than cementmortar, but in terms of environmental aspects it has a significanteffect on CO2 reduction than the cement production using coalcombustion.
Sosialisasi Keselamatan Kerja dan Mitigasi Bencana Pada Tempat Pengolahan Akhir Sampah (TPAS) Tamangapa, Kota Makassar Irwan Ridwan Rahim
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 1 No 1 (2018): Teknologi untuk Masyarakat
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.777 KB) | DOI: 10.25042/jurnal_tepat.v1i1.23

Abstract

Keberadaan sebuah Tempat Pengolahan Akhir (TPA) sampah memang diperlukan oleh suatu daerah karena sampah senantiasa diproduksi oleh penduduk dalam segala aktivitasnya. Selama penduduk terus berkembang maka produksi sampah juga semakin membesar. Sebagian besar sampah perkotaan yang diolah di TPA berasal dari sampah rumah tangga, sampah pasar, sampah perkantoran, dan sampah pusat perbelanjaan. Secara administratif, TPA ini berada di Kelurahan Tamangapa, Kecamatan Mangala, Kota Makassar. Lahan TPA mempunyai luas sekitar 14.3 hektar yang didesain untuk beroperasi sampai tahun 2019. Pesatnya pembangunan membawa dampak pada makin meningkatnya timbulan sampah. Namun peningkatan timbulan sampah ini tidak diiringi dengan pendanaan yang memadai. Keterbatasan dana ini menyebabkan pola penanganan sampah menjadi terganggu. Dimana operasional penanganan sampah yang awalnya didesain sebagai sanitary landfill tidak dilaksanakan secara optimal dan berubah menjadi open dumping. Perubahan operasional penanganan sampah ini membawa dampak pada besarnya peluang resiko bencana.Disamping itu, dari sisi sumber daya manusia, personil yang ditugaskan dalam penanganan sampah perlu ditingkatkan kewaspadaannya terhadap timbulnya kecelakaan kerja dan bencana di TPA.
Pengelolaan Drainase Kota Sebagai Upaya Mitigasi Banjir Kota Makassar Ibrahim Djamaluddin; Sumarni Hamid Aly; Irwan Ridwan Rahim; Achmad Zubair; Rosalinda Ibrahim; Nurjannah Oktorina Abdullah
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 3 No 2 (2020): Penguatan Aplikasi Teknologi untuk Masyarakat pada Masa Pandemi
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v3i2.145

Abstract

Floods in Makassar City are influenced by two main factors, namely: natural factors such as rainfall and topography, and human factors with all their activities that can affect the drainage system and the state of land cover. Most of the water drainage system in Makassar City only relies on the drainage network from small channels to large channels such as canals which are generally flowed by gravity into the sea, so that areas that have undergone a change in land cover function that were previously water infiltration into urban areas are very easy to floods because water drains cannot run properly resulting in frequent flooding, especially in areas that have low ground levels. Aquapond is a retention pond system that is widely used in Japan which functions as a temporary storage of rainwater when rainfall is high and drains it slowly after the rainfall subsides as a solution to urban water drainage management techniques which often experience overflow of water or flooding. Japanese technology retention ponds such as Aquapond were piloted in one place that often experiences flooding every year in Makassar City, namely Jalan Urip Sumohardjo in front of the South Sulawesi governor's office which is expected to be useful in managing the water drainage system which often overflows and causes flooding that disrupts traffic of road. Because the retention pond system is connected to water drainage channels, this water management method is not widely understood by the general public and the local government, so learning and outreach activities regarding planning and design, construction as well as operation and maintenance of Aquapond retention ponds are carried out. The process of implementing this service activity has involved the community, local government and Japanese experts both in the learning process in planning and design, reviewing Aquapond construction.
Sosialisasi Pemilahan Sampah kepada Siswa Kelas 1 SDIT Ikhtiar - Makassar Asiyanthi Tabran Lando; Abdul Nasser Arifin .; Irwan Ridwan Rahim .; Kartika Sari .; Ibrahim Djamaluddin .; Annisa Dwi Damayanti .; Anugrah Jihadi .
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 5 No 1 (2022): Kebersamaan dalam Membangun Masyarakat Tangguh dan Gesit
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v5i1.246

Abstract

Children's awareness in disposing of waste in its place is one of the important factors in learning environmental health to be healthy and clean. The basics and concepts of waste management are not merely using advanced technology, but rather require changes and the formation of behavior from each individual. The formation of individual behavior in managing waste properly needs to be instilled from an early age, which is the golden age of forming a person's behavior, which will become easier and the results more visible at a later age. The formation of waste management behavior from an early age can be started from the formation of the habit of sorting and placing waste in its place, which is expected to become a habit in the course of his life. So that togetherness in managing and creating a clean and healthy environment will be more easily realized. Partners involved in this Community Service activity are students and teachers at SDIT Ikhtiar-Makassar. The solution offered is socialization and assistance to students to dispose of waste in the provided trash cans, separate organic waste, inorganic waste, and B3 waste, and minimize waste generation with the 3R concept (Reuse, Reduce, Recycle). During the COVID-19 pandemic, direct socialization activities were replaced by handing over a pocketbook on waste sorting which contains instructions on how to sort waste. This pocketbook will be used as material in thematic learning for SDIT Ikhtiar students and as one of the supports for the school's Adiwiyata program.
Gradasi Potensial Material Daur Ulang Pasca Bencana Kota Palu sebagai Bahan Penyusun Perkerasan Lentur Novita Pradani; Rita Irmawaty; Muhammad Wihardi Tjaronge; Irwan Ridwan Rahim
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 02 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.264 KB)

Abstract

The earthquake in Central Sulawesi in September 2018, accompanied by tsunami and liquefaction, caused very significant infrastructure damage, especially in Palu City. Roads are one of the vital infrastructures that have suffered a lot of damage. Efforts to rehabilitate roads due to the disaster have been carried out and have left quite a lot of old road pavement material. This dredging material needs to be optimized for use, especially in new pavements. Because this can make new materials efficient, especially aggregates in the pavement mixture. The use of new aggregates can be conditioned to a minimum by making efficient use of recycled materials. Namely by determining the type of pavement layer that best suits the gradation conditions of the recycled material. The purpose of this study was to obtain the type of flexible pavement layer that best suits the gradation of post-disaster recycled material based on standard specifications. The method used is sieving analysis of recycled material from several locations in Palu City that were affected by the disaster. The results showed that the use of post-disaster recycled materials, based on the recycled aggregate suitability value, was the AC-WC layer of 78.33%, the HRS-WC layer of 70%, the AC-BC layer of 66.67%, the layer of AC-Base is 41.67% and SMA-Thin layer is 40%. Based on the grading analysis, post-disaster recycled material in Palu City is most suitable for the AC-WC layer type because the addition of new aggregate is the least, resulting in the most optimal use of recycled material.Kata kunci: Recycled Material, Post Disaster Material, Flexible Pavement, Gradation
Potential Utilization of PT Vale Indonesia Tbk Slag as An Alternative Energy Source: Potensi Pemanfaatan Kerak Besi pada PT Vale Indonesia Tbk sebagai Alternatif Sumber Energi Irwan Ridwan Rahim; Evi Aprianti; Faizal Arya Samman; Sutami Suparmin
Jurnal Teknologi Lingkungan Vol. 23 No. 2 (2022)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.265 KB) | DOI: 10.29122/jtl.v23i2.5095

Abstract

ABSTRAK Potensi pertambangan nikel di Indonesia tersebar dari Pulau Sulawesi, Maluku, dan Papua dengan sumber daya dan cadangan biji nikel laterit sebesar 4,2 milyar ton. Dampak negatifnya adalah dihasilkan limbah dari pengolahan bijih nikel yaitu terak (slag) dalam jumlah besar dan jika tidak dilakukan pengelolaan dengan baik, maka akan mengancam lingkungan sekitar pertambangan. Penelitian ini bertujuan untuk melakukan analisis SWOT kelayakan terak nikel yang dihasilkan oleh PT. Vale Indonesia Tbk menjadi sebuah produk energi alternatif dalam bentuk baterai dengan metode mengambil sampel terak dari ke-5 lokasi pada Tempat Penyimpanan Sementara (TPS) Delaney, PT Vale Indonesia Tbk. Selanjutnya, sampel terak dihaluskan sampai mencapai ukuran 100 mesh dan diberikan empat perlakuan elektrolit yaitu kering, air distilasi, hidrogen klorida (HCl), dan natrium hidroksida (NaOH). Setiap sampel terak yang telah diberikan perlakuan selanjutnya dimasukkan ke dalam wadah (sel) dengan ukuran 10x10x2 sentimeter kemudian memasukkan plat elektroda tembaga (Cu) dan seng (Zn) pada sisi sel yang berlawanan. Eksperimen terhadap 20 sel baterai menghasilkan data tegangan rata-rata tertinggi sebesar 1,28 Volt dengan arus rata-rata tertinggi sebesar 57,34 miliAmpere. Perlakuan yang paling efektif adalah dengan penambahan natrium hidroksida (NaOH) ke dalam baterai terak. Unsur yang berpengaruh dalam menghasilkan tegangan dan arus tertinggi adalah besi (Fe) dan senyawa oksida sulfat (SOx). Sel baterai terbukti dapat menyimpan energi listrik sebesar 0,1–24 kali arus dan tegangan awal melalui proses pengecasan sehingga disimpulkan bahwa baterai terak dapat dimanfaatkan sebagai sumber energi alternatif untuk alat elektronik berdaya rendah. Kata kunci: Terak nikel, Energi alternatif, Limbah, Baterai terak, Vale Indonesia ABSTRACT Nickel mining potential in Indonesia spreads from Sulawesi Island, Maluku, and Papua with resources and reserves of nickel laterite of 4.2 billion tons. The negative impact is that large amounts of waste are generated from nickel ore processing, namely slag and if not managed properly, it will threaten the environment around the mining. This study aims to conduct a SWOT (Strenght, Weakness, opportunity, Treat) analysis of the feasibility of nickel slag produced by PT. Vale Indonesia Tbk becoming an alternative energy production in the form of batteries by taking samples of slag from five locations at the Delaney Temporary Storage (TPS) of PT Vale Indonesia Tbk. Furthermore, the slag sample was pulverized until it reached a size of 100 mesh and given four electrolyte treatments; Dry, distilled water, hydrogen chloride (HCl), and sodium hydroxide (NaOH). Each slag sample that has been treated is then put into a container (cell) with a size of 10x10x2 centimeters then inserts the copper (Cu) and zinc (Zn) electrode plates on the opposite side of the cell. Experiments on 20 battery cells resulted in the highest average voltage data of 1.28 Volts with the highest average current of 57.34 milliamperes. The most effective treatment is the addition of sodium hydroxide (NaOH) into the slag battery. The elements that influence the production of the highest voltage and current are iron (Fe) and sulfate oxide (SOx) compounds. Battery cells are proven to be able to store electrical energy of 0.1–24 times the initial current and voltage through the charging process so it is concluded that the slag battery can be used as an alternative energy source for low-power electronic devices. Keywords: Nickel slag, Alternative energy, Waste, Battery slag, Vale Indonesia
DAMPAK AKIBAT AKTIFITAS PENAMBANGAN PASIR DI KOTA SORONG Asriadi Asriadi; Irwan Ridwan Rahim; Abdul Rahman Djamaluddin
JURNAL INOVASI PENDIDIKAN DAN SAINS Vol 4 No 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v4i1.1472

Abstract

Pasir merupakan salah satu kebutuhan pokok konstruksi, kebutuhannya pun sangat tinggi permintaannya dalam kegiatan pembangunan Kota Sorong antara lain pekerjaan struktur dan infrastruktur, salah satu material yang pokok adalah pasir. penelitian ini bertujuan menganalisis seberapa besar dampak ekonomi terhadap masyarakat akibat kegiatan penambang pasir dan memberikan usulan pengelolaan penanggulangan dampak banjir terhadap kegiatan penambangan pasir di Kota Sorong khususnya wilayah km 10 Kampung Bugis. rancangan penelitian ini dalam bentuk program kerja yang disusun untuk memudahkan dalam melaksakan penelitian secara efektif dan efisien. dalam tahapan ini akan dilakukan aerialgraphy dan overlay peta wilayah daerah tambang sehingga dapat teridentifikasi seberapa besar luasan tambang dari tahun ke tahun, tahapan dalam penelitian dikelompok dari studi peRpustakaan, pengumpulan data, survey dan observasi lapangan. serta teknik analisis data menggunakan metode eclac dan metode ahp. hasil penelitian ini menunjukkan bahwa terjadi peningkatan luas galian menjadi 60% sehingga area genangan banjir meluas menjadi 88%, terjadi kenaikan biaya setiap tahun, kenaikan tertinggi pada tahun 2016, dimana besar biaya kerusakan dan kerugian sebesar Rp 12,6 milyar dengan total komulatif yang dicapai sampai dengan tahun 2016 adalah sebesar Rp. 77,14 milyar. dalam upaya pengelolaan penanggulangan banjir didapat 5 kriteria upaya pengelolaan antara lain biaya,ketersediaan,pelaksanaan,waktu dan ramah lingkungan. dengan 3 alternatif yaitu perkuatan hukum, pembangunan fisik dan rekayasa sosial.
DAMPAK AKIBAT AKTIFITAS PENAMBANGAN PASIR DI KOTA SORONG Asriadi Asriadi; Irwan Ridwan Rahim; Abdul Rahman Djamaluddin
Jurnal Inovasi Pendidikan dan Sains Vol 4 No 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v4i1.1472

Abstract

Sand is one of main material for construction. The need of sand is very high for construction development in Sorong for structure or infrastructure work. The research aimed (1) to analyze how wide is the economic impact of the on the community as the result the activties of the sand mines; and (2) to suggest processing management in order to overcome the flood impact on the sand mining activities in sorong city, particularly in kilometer 10 area of Kampung Bugis. the research design was in the formof work program which was arranged so that research could be carried effectively and efficiently. in the stage, the aerialgraphy and overlay of the map of the mine region so that the extent of the mine from year to year could be identified. the research stages were group into the library studym data collection, survey and field observation. and the tecnique of data analysis used the method of eclac and ahp. the research result indicated tha extent of the mining had reached 60%, and consequently the area of flood puddle had increase to80%. the cost had also increased every year, and highest increase occured in 2016, when the cost of the damage and loss wass Rp 12.6 billion, and the cumulative cost had reached Rp 77.14 billion. the management effort to overcome the flood could be divided into 5 criteria of the management efforts, namely costs, availability, realization, time and friendly enviroment, with 3 alternatives, legal reinforcement, construction of structures and social engineering. thus, itt can be include tha the occurance of the flood was influenced by the extent of the sand mining, sothat the sediment scraping reduced the capacity of the river retain water.
Co-Authors Abdul Nasser Arifin Abdul Rahman Djamaluddin Abdullah, Nurjannah Oktorina Achmad Zubair Annisa Dwi Damayanti . Anugrah Jihadi . Asiyanthi Tabran Lando Asriadi Asriadi Asriadi Evi Aprianti Faizal Arya Samman IBRAHIM DJAMALUDDIN, IBRAHIM Irmawaty, Rita Kartika Sari . Mery Selintung Muhammad Wihardi Tjaronge Novita Pradani Rosalinda Ibrahim Sumarni Hamid Aly Sutami Suparmin