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All Journal Jurnal Rekayasa Proses Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan Jurnal Pendidikan Teknologi dan Kejuruan CIVED (Journal of Civil Engineering and Vocational Education) Jurnal Reka Lingkungan Jurnal Kesehatan Masyarakat Sinergi Jurnal Dampak IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Jurnal Rekayasa Proses Jurnal Serambi Engineering JURNAL PENDIDIKAN TAMBUSAI JURNAL REKAYASA Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Envirous AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Serambi Engineering Journal of Civil Engineering and Vocational Education Jurnal Rekayasa Proses JURNAL REKAYASA KIMIA & LINGKUNGAN
Rizki Aziz
Teknik Lingkungan, Fakultas Teknik, Universitas Andalas
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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Optimization of sustainable biodiesel production from waste cooking oil using heterogeneous alkali catalyst M Andrifar; Fadjar Goembira; Maria Ulfah; Rika Putri; Rati Yuliarningsih; Rizki Aziz
Jurnal Rekayasa Proses Vol 16, No 2 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.74373

Abstract

The increasing world population, rapid industrialization, urbanization, and economic growth have led to a continuous increase in the consumption of fossil fuels to meet the ever-increasing demand for energy. Continuous emissions from burning fossil fuels will create a need to find appropriate and sustainable substitutes for fossil fuels. Biodiesel is the right alternative solution for diesel engines because it is renewable, non-toxic, and environmentally friendly. Waste cooking oil (WCO) from the food, non-food, restaurant, and household sectors is produced on a large scale in every country and can contribute to environmental pollution if proper disposal systems are not applied. Instead of throwing it landfills Environmental pollution can be minimized by recycling WCO. This study evaluates the potential of using WCO to produce biodiesel using zeolite synthesized from fly ash as a heterogeneous alkali catalyst through a transesterification reaction. The reactor in this study used a 1,000 ml three-necked boiling flask equipped with a condenser, cooling tank, and pump. Stirring and heating during the process of biodiesel production using a magnetic stirrer and a hot plate. The thermometer is used to measure the reaction temperature. Optimization of biodiesel production from zeolite catalyst synthesized from fly ash based on variations in the ratio of methanol: oil (8:1; 10:1; 12:1; and 14:1), catalyst weight (1, 2, 3, and 4% weight), and temperature (45 oC, 55 oC, and 65oC). Zeolite from fly ash produces biodiesel with a yield of 91.67% with optimum operating conditions reaction time of 60 minutes, methanol oil ratio of 8:1, operating temperature 55oC, and the amount of catalyst 1% by weight. This experiment confirms the possibility of utilizing fly ash waste for the application of catalysts in biodiesel production.
Optimization of sustainable biodiesel production from waste cooking oil using heterogeneous alkali catalyst M Andrifar; Fadjar Goembira; Maria Ulfah; Rika Putri; Rati Yuliarningsih; Rizki Aziz
Jurnal Rekayasa Proses Vol 16, No 2 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.74373

Abstract

The increasing world population, rapid industrialization, urbanization, and economic growth have led to a continuous increase in the consumption of fossil fuels to meet the ever-increasing demand for energy. Continuous emissions from burning fossil fuels will create a need to find appropriate and sustainable substitutes for fossil fuels. Biodiesel is the right alternative solution for diesel engines because it is renewable, non-toxic, and environmentally friendly. Waste cooking oil (WCO) from the food, non-food, restaurant, and household sectors is produced on a large scale in every country and can contribute to environmental pollution if proper disposal systems are not applied. Instead of throwing it landfills Environmental pollution can be minimized by recycling WCO. This study evaluates the potential of using WCO to produce biodiesel using zeolite synthesized from fly ash as a heterogeneous alkali catalyst through a transesterification reaction. The reactor in this study used a 1,000 ml three-necked boiling flask equipped with a condenser, cooling tank, and pump. Stirring and heating during the process of biodiesel production using a magnetic stirrer and a hot plate. The thermometer is used to measure the reaction temperature. Optimization of biodiesel production from zeolite catalyst synthesized from fly ash based on variations in the ratio of methanol: oil (8:1; 10:1; 12:1; and 14:1), catalyst weight (1, 2, 3, and 4% weight), and temperature (45 oC, 55 oC, and 65oC). Zeolite from fly ash produces biodiesel with a yield of 91.67% with optimum operating conditions reaction time of 60 minutes, methanol oil ratio of 8:1, operating temperature 55oC, and the amount of catalyst 1% by weight. This experiment confirms the possibility of utilizing fly ash waste for the application of catalysts in biodiesel production.
EFEKTIVITAS PENANGANAN PERMUKIMAN KUMUH DI KELURAHAN BATANG ARAU KOTA PADANG Lisa Risna; Melinda Noer; Rizki Aziz
JURNAL REKAYASA Vol 12 No 1 (2022): Jurnal REKAYASA
Publisher : Fakultas Teknik Sipil dan Perencanaan. Universitas Bung Hatta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37037/jrftsp.v12i1.150

Abstract

Persoalan kumuh menjadi bagian permasalahan kumuh bagi kota-kota besar di Indonesia dan menjadi tanggung jawab semua pihak dalam penanganannya. Berbagai upaya dilakukan dalam penanganannya untuk terciptanya lingkungan yang sehat, bersih, aman, tertib, layak huni, dan nyaman bagi penghuninya. Kelurahan Batang Arau Kota Padang salah satu kelurahan kumuh di Kota Padang sesui SK Kumuh tahun 2014. Penanganan kumuh telah dilakukan oleh beberapa pihak sejak 4 tahun terakhir sehingga perlu dianalisis efektifitas penanganan permukiman kumuh yang dilakukan. Penelitian ini dilakukan dengan menggunakan metode penelitian kualitatif dan kuantitatif. Pengumpulan data dilakukan dengan observasi lapangan, wawancara secara bebas. Data yang digunakan mencakup data kualitatif seperti data kondisi fisik wilayah, penggunaan lahan sedangkan data kuantitatif berupa data demografi, data sarana dan prasarana lingkungan, data numerik 7 aspek kumuh, dan data investasi kegiatan penanganan kumuh. Pengolahan data menggunakan analisis terhadap data baseline yang bersumber dari Program KOTAKU dan data kolaborasi kegiatan investasi penanganan kumuh tahun 2016-2019. Program Kota Tanpa Kumuh (KOTAKU) salah satu program nasional yang fokus pada pencapaian pengurangan luasan kumuh. Hasil penelitian menginformasikan bahwa 3 kriteria yang dinilai efektivitasnya yaitu upaya/usaha (effort) yang dilakukan oleh pemerintah dalam melaksanakan program sesuai dengan tujuan yang ingin dicapai dinilai tidak efektif, hasil (result) dari pelaksanaan program dibandingkan dengan hasil yang ditetapkan sebelumnya, dinilai tidak efektif serta dampak (impact) yang dirasakan langsung oleh masyarakat dari pelaksanaan program dinilai efektif. Berdasarkan hal tersebut, dapat disimpulkan bahwa efektivitas penanganan permasalahan permukiman kumuh di Kelurahan Batang Arau dinilai tidak efektif.
Identifikasi Timbulan, Komposisi, Karakteristik dan Potensi Daur Ulang Limbah Padat Tanaman Hortikultura Feby Reyna Putri; Yommi Dewilda; Rizki Aziz
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5554

Abstract

Solid waste produced by vegetable crops has the potential to cause environmental pollution because it has not been managed properly. Sampling is done by purposive sampling method and SNI provisions 19-3964-1994. Units of waste generation in weight and volume are consecutively 0.315 kg / m2/ harvest and 2,509 L/ m2/ harvest. The generation of waste in Tanah Datar Regency in units of weight and volume is consecutively 51.793,009 tons/year and 363.490,429 m3/ year. The composition of pre-harvest waste in the form of agricultural waste is 50%, dry waste is 27%, and hazardous and toxic substance waste 23%. Composition of post-harvest waste in the form of agricultural waste 100%. The average weight of waste type is 0.205 kg/ L, water content 35.479%, volatile levels 62.482%, ash levels 1.243%, fixed carbon 0.796%, C / N ratio 16,580, and biodegradability fraction 74.273%. The recycling potential of pre-harvest waste for LDPE plastic types is 2,437% and compostable organic waste is 50,116%. The post-harvest recycling potential is 100% in the form of compostable organic waste. Based on the results, the waste produced has the potential to be reused, recycled, and processed by third parties specifically for hazardous and toxic substance waste.
Identifikasi Timbulan, Komposisi, Karakteristik, dan Potensi Daur Ulang Sampah Pertanian Tanaman Pangan di Kabupaten Lima Puluh Kota Nada Zhafirah Hendria; Yommi Dewilda; Rizki Aziz
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5606

Abstract

Abstract Lima Puluh Kota District is one of the dominant food crop-producing provinces in West Sumatera. This activity produces an amount of waste. The research was conducted at 15 points in the sub-district Lareh Sago Halaban with a purposive sampling method and based on SNI 19-3964-1994. The results showed the pre-harvest waste generation was 12,024,480 tons/year or 168,255,706 m3/year, whereas the post-harvest waste generation was 1,283,828,005 tons/year or 17,664,025,689 m3/year. The pre-harvest waste compositions 46.835% agricultural waste, 25.194% rubbish, and 28.020% agricultural hazardous waste, though the post-harvest waste was 100% agricultural waste. Physical characteristics obtained 0.232 kg/L of pre-harvest waste and 0.052 kg/L of post-harvest waste. Chemical characteristics equally proximate analysis with water content 36.9538%, volatile content 61.0327%, ash content 1.4870%, fixed carbon 0.5265%, and the C/N ratio obtained 18.0797. The biodegradability fraction was 65,7044%. The potential for recycling the pre-harvest waste was 52.413%, while the post-harvest waste was 100%. The recommendations will probably give, like reducing waste from chemical fertilizer packaging with organic fertilizer, utilizing packaging waste as a substitute for polybags, processing plant waste into compost, and processing agricultural hazardous waste to third parties.Keywords: characteristic, composition, food crop waste, recycling potentials, waste generation
Determinant factors in increasing the livability of the city of Padang from the perspective of transportation Yosritzal Yosritzal; Rizki Aziz; Melinda Noer; Dita Oktaviani Putri; Abdullah Sani
SINERGI Vol 27, No 1 (2023)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2023.1.009

Abstract

Padang has been determined to be a livable city in 2024, according to the Mission of the City Major 2019-2024. Some improvements have been made, such as more BRT corridors, widening the sidewalk, and adding benches along the sidewalks. However, achieving a livable city is far more than just those thingies; we also need to know what people need and what the government is willing to do. This study explores the determinant factors in achieving the livable city criterion for Padang, especially regarding transportation-related variables in the expert views along and public and government interests. The quadrant analysis of Expectation-Performance and Effort-Effect Analysis was used to identify the determinant and priority factors in improving the livability of Padang. The results show that improving some essential elements has satisfied public expectations. Still, more things need to do, such as an integrated transportation system, comfortable public transportation, transportation for disabled persons, and a more environmentally friendly transportation mode. With less effort and high effect, the most priority factors are comfortable and secure pedestrian facilities, improving traffic to reduce travel time, and improving public transport facilities.
Analisis Rute Transportasi Sampah Kota Padang dengan Life Cycle Assessment Refi Martha; Rizki Aziz; Slamet Raharjo
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5696

Abstract

Transportasi sampah membutuhkan energi dalam jumlah besar. Energi tersebut menghasilkan gas buang yang mencemari lingkungan. Dengan optimasi rute diharapkan pengangkutan sampah menjadi cepat serta kebutuhan BBM yang lebih sedikit. Minimasi jarak dan waktu tempuh merupakan solusi utama dari rute pengangkutan sampah. Penelitian ini bertujuan menentukan skenario terbaik dengan dampak lingkungan terkecil transportasi sampah Kota Padang menggunakan metode LCA Software SimaPro versi 9.0. Evaluasi rute dilakukan dengan membandingkan rute pengangkutan sampah yang ada dengan skenario rute baru berdasarkan aturan dari Permen PU No. 3 Tahun 2013. Sampah yang dihitung adalah sampah komunal yang sampai di TPA serta emisi yang dihasilkan dari tiap skenario rute. Penilaian dampak lingkungan berupa dampak GWP dari semua skenario. Tahapan penelitian dilakukan dengan membuat dua buah rute skenario sebagai pembanding terhadap satu rute eksisting. Dari ketiga rute tersebut didapatkan data berat sampah yang terangkut, jarak pengantaran dari titik kontainer ke TPA. Selanjutnya didapatkan nilai GWP dari skenario 1, 2 dan 3 secara berurutan adalah 1611,913 kg CO2 eq, 1721,1674 kg CO2 eq dan 1788,58952 kg CO2 eq. Penelitian menunjukkan secara umum skenario 1 adalah rute terpendek dengan dampak GWP terkecil. Sedangkan skenario 3 mempunyai dampak GWP paling besar. Beberapa rute pada skenario 1 mempunyai dampak GWP lebih tinggi dari skenario 2, dipilih karena jalannya lebih lebar dan tidak melewati pemukiman, sedangkan rute skenario 2 nya yang merupakan pilihan terbaik akan dilewati jika pengantaran sampah dilakukan pada malam hari, seperti Kontainer Gadut dan Kampus Unand Limau Manis. Untuk mendapatkan angka GWP terkecil skenario rute terpendek merupakan pilihan terbaikKata kunci: Transportasi Sampah, Global Warming Potential, Penilaian Dampak, Life Cycle Assessment, Ramah Lingkungan
Analysis of Weight, Composition, Density, and Recycling Potential of Floating Marine Debris in Pasie Nan Tigo Area, Padang City Rizki Aziz; Budhi Primasari; Cici Amelia Edriani
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 20, No 1 (2023): March 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v20i1.208-218

Abstract

Floating marine debris is a solid materials that is produced and disposed of in the marine environment. This study aimed to analyze the weight, composition, density, and recycling of potential marine debris. The samples were taken at three locations on rainy and non-rainy days. Location was selected based on trawl activities, estuary, and public activities. The method of sampling was using trawl. The weight on rainy days was 1.2 to 2.2 g/m2, while on non-rainy days was 1.6 to 2.7 g/m2. Total weight 689.2 kg non rainy conditions  and on rainy conditions 895.4 kg. There were four types of waste obtained, which were plastic, wood, fiber, and rubber. The highest percentage in the composition was plastic, which was 48 to 61%. The density of waste on non-rainy days was 0.1 -1.3 g/m2 and on rainy days conditions range 0.2 - 1.7 g/m2. The highest density of waste was plastic of 1.6 g/m2. The recycling potential of plastic, wood, and fabric was 100% respectively. The recycling potential of plastic, wood, and fabric was 100% respectively. The recommendation for floating marine debris is 3R + 1P (recycling, reuse, recovery, and participant).
Analisis SWOT Keberlanjutan Bank Sampah Kota Padang untuk Mendukung Penggunaan Alternative Fuel and Raw Material (AFR) pada PT. Semen Padang Dean Eka Putri; Slamet Raharjo; Rizki Aziz
Jurnal Ilmu Lingkungan Vol 21, No 3 (2023): July 2023
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.21.3.675-683

Abstract

Sampah di Kota Padang mencapai 640 ton/hari yang akan diangkut ke Tempat Pemprosesan Akhir Sampah (TPA). Berdasarkan Peraturan Menteri Lingkungan Hidup No. 13 Tahun 2012 bahwa pelaksanaan Reduce, Reuse, dan Recycle melalui Bank Sampah. Berdasarkan data dari Dinas Lingkungan Hidup (DLH) Kota Padang tahun 2018, jumlah bank sampah yang aktif di Kota Padang berjumlah 7 unit. Bank sampah ini dapat mensuplai sebanyak 3,3 ton/bulan dari 36 ton/bulan untuk total keseluruhan kebutuhan Alternatif Fuel and Rawmaterial (AFR) yang dibutuhkan oleh PT. Semen Padang (0,03 % substitusi). Sampah terpilah ini berupa kertas/kardus dan plastik dengan nilai kalor masing-masing 3.645,67 dan 9.590,72 kkal/kg. Dengan demikian diperlukan kembali 68 Bank Sampah untuk memenuhi pasokan sampah AFR PTSP. Berdasarkan analisis Strength Weaknesses Opportunities Threats (SWOT) diketahui bahwa bank sampah di Kota Padang dalam posisi kuadran I (Progresif) dimana kondisi Bank Sampah kota Padang dalam keadaan prima dan mantap sehingga sangat dimungkinkan untuk terus melakukan ekspansi, memperbesar pertumbuhan dan meraih kemajuan secara maksimal.
Strategi Pengelolaan Sampah Menggunakan Analisis SWOT : Studi Kasus TPA Regional Payakumbuh Viandry Tetriva Putri; Slamet Raharjo; Rizki Aziz
Jurnal Serambi Engineering Vol 8, No 3 (2023): Juli 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i3.5788

Abstract

Overcapacity experienced by the Payakumbuh Regional Final Processing Site (TPA) caused landslides in 2017 so several rice fields and agricultural land around were buried. This TPA serves waste for four Regencies/Cities with a volume capacity of 400,000 m³. Every day there are approximately 200 tons of waste coming in from Payakumbuh, Limapuluh Kota, Bukittinggi, and Agam. Now the TPA's storage capacity is only around 130,540 m³. With landslides and almost full landfills, this proves that waste management at the TPA is not optimal. The aim of this study was to examine the waste management strategy at the Regional TPA of Payakumbuh using a qualitative approach using the SWOT Analysis (Strengths, Weakness, Opportunities and Threats) method. The research begins with measuring the composition of waste, interviewing the role of scavengers, and identifying internal-external factors in the SWOT analysis. Measurement results for the composition of organic waste are 81.24% and 18.76% inorganic waste, potential for recycled waste is 69.05% in the form of compost and 2.40% for saleable. The results showed that landfill facilities functioned well except for sorting sites, while the role of scavengers was very useful in reducing inorganic waste by 3 tons/day. And results of SWOT analysis are in quadrant I with 3 strategies produced, including increasing composting facilities at TPA, implementing policies for TPA users and increasing empowerment of scavengers at TPA.
Co-Authors Abdullah Sani Ade Septia Permadani Adfuza, Gloria Poppy Ajis, Muhammad Fadhli Amelia Hariry Andrifar, M. Andrifar, Muhammad Arbi, Yaumal Arum Nabila Aulia Rahmi, Aulia Busrita Exgia Putri Camelia Panatarani Candrianto Chevakidagarn, Panalee Cici Amelia Edriani Danar Praseptiangga Danar Praseptiangga Danteravanich, Somtip - Datin Suhaila Dean Eka Putri Dian Paramita Dita Oktaviani Putri Donny Eros Euis Nurul Hidayah Fadjar Goembira Faren Fadila Putri Febriardy Febriardy Feby Reyna Putri Firda Aulya Syamani Fitra Ramadhani Hafizhul Khair Hariry, Amelia Hasnureta Hasnureta Hayati, PK Dewi Hokiartha, Rendi Indah Kurnia Asyura Jabang Nurdin Jonrinaldi Laksono Trisnantoro Larasati Sekar Arum Lisa Risna Lutfina Lutfina M Andrifar Maria Ulfah Maryam, Annisa Melinda Noer Mhd. Fauzi Mhd. Handal Hamdallah Mikel Faklin Monica Saputri Nada Zhafirah Hendria Nanda Chyntia Nanda Chyntia Nanda, Rama Novita Sari Novizar Nazir Panatarani , Camelia Pratama, Dedy Aulya Pratiwi, Hesti Anggia Primasari, Budhi Puti Sri Komala Puti Sri Komala Putri, Rika Rahmadhani, Fitra Rahmi, Jumita Ramadhanil Rati Yuliarningsih Refi Martha Rika Putri Rinaldi, Jon Rinanda, Bismi Lyra Risna, Lisa Rudi Febriamansyah Seprimon Seprimon Shinta Indah Shinta Indah Silvia Nitri Slamet Raharjo Surdinal, Wendi Syamani, Firda Aulya Syarah Nurunnissa Taufiq Ihsan Ulfah, Maria Vera Surtia Bachtiar Viandry Tetriva Putri W. Widiyastuti Warnita Wathri Fitrada Widiyastuti, W. Yaumal Arbi Yega Serlina Yeggi Darnas Yeggi Darnas Yenni Yenni Ruslinda Yommi Dewilda Yosritzal, Yosritzal Yuliarningsih, Rati Yurizka Trialisa