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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Teknik Lingkungan E-Dimas: Jurnal Pengabdian kepada Masyarakat Sustinere: Journal of Environment and Sustainability
Irawan Wisnu Wardana
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science Public Health Social Sciences Transportation

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Fast decomposition of food waste to produce mature and stable compost Priyambada, Ika Bagus; Wardana, Irawan Wisnu
Sustinere: Journal of Environment and Sustainability Vol 2 No 3 (2018): pp 108 - 167 (December 2018)
Publisher : Centre for Science and Technology, IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (717.245 KB) | DOI: 10.22515/sustinere.jes.v2i3.47

Abstract

Food waste can be meat, fish, cooked food scraps, moldy bread, bone scraps, cakes, expired foods, dairy products, fruits and vegetables. Food waste which is put into the trash will decay and produce a foul odor which in turn will invite flies and cause potentially diseases. Most of the food waste that is processed using the composting process needs to spend a relatively long time, which is about 1-3 months or even 6-12 months. This study aims to accelerate composting time through the addition of additive microorganisms in various quantities. Four aerobic composter reactors were utilized in this study. Variations of additive microorganisms added to the research object were 0 in reactor (control), 8 g in B2 reactor, 16 g in B3 reactor, and 32 g in B4 reactor. All reactors were added with dolomite lime. During the composting process temperature, pH, water content and macroelement were tested. The results showed that the mature and stable compost was reached on the seventh day and produced from B2 reactor. In That reactor treated food waste and additive microorganisms with a ratio of 7:3, and 1 g dolomite lime. The level of C/N ratio produced from B2 reactor was 16.71. The value of C/N ratio was better than B3 reactor which produced C/N of 18.37. The control reactor produced a C/N ratio of 21.84 and mature and stable compost was reached on the 14th day. All in all, this study was regarded to be successful in accelerating the degradation of food waste into mature and stable compost in just seven days.
PENGARUH FERMENTASI KOTORAN KAMBING PADA EMISI GAS (CO2, CH4, N2O) VERMICOMPOSTING SAMPAH ORGANIK Sutrisno, Endro; Wardana, Irawan Wisnu; Priyambada, Ika Bagus
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 14, No 1 (2017): Maret 2017
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (121.795 KB) | DOI: 10.14710/presipitasi.v14i1.1-4

Abstract

Kegiatan pengelolaan sampah dapat melepaskan gas rumah kaca (GRK) ke atmosfer dan mengintensifkan iklim global. Pengomposan adalah proses komponen aerobik karbon degradable organik dalam limbah diubah menjadi karbon dioksida. Menggabungkan prakompos dan vermicomposting berpotensi menimbulkan emisi amonia dan gas rumah kaca. Desain percobaan dilakukan dengan memberikan fermentasi kotoran kambing dalam vermicomposting sampah organik dengan jumlah yang berbeda untuk mengetahui pengaruh fermentasi kotoran kambing terhadap emisi gas CO2, CH4, N2O saat kematangan kompos. Desain penelitian ini menggunakan 4 kombinasi yaitu kombinasi pertama 80% sampah organik, 20% kotoran kambing; kombinasi kedua yaitu 80% sampah organik, 20% kotoran kambing, 100 mL Aspergilus niger; kombinasi ketiga yaitu 60% sampah organik, 40% kotoran kambing; dan kombinasi keempat yaitu 60% sampah organik, 40% kotoran kambing, 100 mL Aspergilus niger. Kriteria pengujian yang digunakan adalah pengujian emisi gas CO2, CH4, N2O di akhir kematangan kompos. Dengan adanya penambahan kotoran kambing, semakin banyak kotoran kambing ditambahkan emisi gas CO2, CH4dan NO semakin banyak. Sedangkan dengan ditambahkan Aspergillus niger, proses fermentasi semakin cepat dalam menghasilkan emisi gas CO2, CH4 dan N2O.
SAMPAH UNTUK ENERGI: KELAYAKAN PEMANFAATAN LIMBAH ORGANIK DARI KANTIN DI LINGKUNGAN UNDIP BAGI PRODUKSI ENERGI DENGAN MENGGUNAKAN REAKTOR BIOGAS SKALA RUMAH TANGGA Wardana, Irawan Wisnu; Junaidi, Junaidi
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 9, No 2 (2012): Vol 9, No 2 (2012)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.301 KB) | DOI: 10.14710/presipitasi.v9i2.79-83

Abstract

Harga minyak yang melonjak mempengaruhi aktifitas perekonomian dunia termasuk Indonesia, hal tersebut mendorong pemerintah untuk mengembangkan energi terbarukan termasuk diantaranya biogas. Limbah-limbah kantin memiliki potensi untuk menjadi sumber energi terbarukan, yaitu biogas. Limbah sisa makanan dan aktifitas dapur dalam jumlah yang cukup dari kantin di lingkungan fakultas teknik dikumpulkan, dilakukan perlakuan seperti penghalusan dan homogenisasi, lalu tahap memasukkan substrat beserta ekstrak rumen sapi sebagai sumber bakteri anaerob kedalam batch reactor dengan penambahan air sebagai variasi. Dari hasil penelitian diperoleh kesimpulan, bahwa penambahan air mempengaruhi jumlah gas yang dihasilkan. Diketahui bahwa limbah yang ditambahkan air sebanyak 64 ml, mampu menghasilkan  volume gas lebih banyak dibanding yang lainnya. Umur produksi gas mampu menghasilkan gas hingga hari ke 19. Dalam penelitian didapatkan adanya penurunan dan peningkatan produksi gas. Hal ini disebabkan adanya tahap pembentukan gas yang terjadi, mulai dari tahap hidrolisis, acidogenesis, asetogenesis, dan metanogenesis.
ANALISIS INTENSITAS KEBISINGAN TERHADAP PERUBAHAN NILAI AMBANG DENGAR PEKERJA SEBELUM DAN SETELAH TERPAPAR KEBISINGAN DI UNIT RING FRAME SPINNING 5 PT APAC INTI CORPORA, BAWEN – SEMARANG Ardanariswari Ardanariswari; Irawan Wisnu Wardana; Sri Sumiyati
Jurnal Teknik Lingkungan Vol 2, No 4 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (140.169 KB)

Abstract

Sound in specific intensity which is caused by production engines in factories that operated for 24 hours all day are potentially causes one of  environment pollution impact, in this case is noise pollution. Main impact of noise are exposure objects surrounds the engines, that is Hearing Threshold Level (HTL) reduction of workers surrounds who are exposed by noise from that engines. This research is purpose to survey and analyze a noise intensity in Ring Frame area on Spinning 5 unit PT APAC INTI CORPORA, Bawen-Semarang and to analyze the diferrence of workers’re HTL before and after exposed by noise in that area. Before is when first time the workers work  in that area, and after is when this research did. Based on worker’re audiometric tests did in June 12th, 2013 for 15 workers in that area, shown that Hearing Threshold Level average of 4 workers suffered minor deaf right ear. And 3 workers suffered minor deaf left ear. The comparation result of hearing threshold level before and after exposed by noise in that area, can be inferred that occurs the increasing of Hearing Threshold Level (hearing reduction) of workers in that area. From comparative statistic analysis test Paired Sample T-Test, signification value (probability) is 0,000 < 0,05 that H0 denied (H1 accepted). So can be conclude that there is a strong relation between differences of Hearing Threshold Level before and after exposed by noise in that area.
IbM VERMI KOMPOSTING BAGI KELOMPOK TANI NGUDI MAKMUR KABUPATEN SEMARANG MENUJU PERTANIAN ORGANIK BERWAWASAN LINGKUNGAN Sri Sumiyati; Endro Sutrisno; Irawan Wisnu Wardana
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 7, No 2 (2016): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v7i2.1137

Abstract

Kelompok Tani Ngudi Makmur belum melakukan pengelolaan limbah peternakan secara baik dan benar. Limbah peternakan yang berupa kotoran ternak, sisa pakan, dan sisa alas kandang tersebut hanya ditumpuk begitu saja di dekat kandang ternak. Limbah peternakan yang tidak dikelola dengan baik tersebut akan menimbulkan dampak negatif bagi lingkungan sekitar antara lain timbul masalah bau, banyak lalat, dan dari aspek estetika kurang baik. Tujuan dari kegiatan Iptek bagi Masyarakat ini adalah sosialisasi dan praktek langsung pembuatan pupuk vermicompos. Metode yang digunakan adalah: 1) Melakukan penyuluhan ke mitra sasaran, 2) Praktek langsung pembuatan pupuk vermicompos, 3) Praktek langsung penggunaan pupuk vermicompos  di lahan perkebunan milik anggota kelompok Tani Ngudi Makmur. Hasil yang diperoleh berupa Pupuk Vermicompos dengan angka rasio C/N sebesar 20, 68. Pupuk Vermicompos yang diproduksi oleh Anggota Kelompok Tani Ngudi Makmur sudah memenuhi standar 70/Peraturan Menteri Pertanian/SR.140/10/2011 Tentang Pupuk Organik, Pupuk Hayati, dan Pembenah Tanah, angka rasio C/N sebesar 15-30. Kata kunci: vermicompos, rasio C/N, limbah
Co-Authors Ardanariswari Ardanariswari Endro Sutrisno Endro Sutrisno Ika Bagus Priyambada Junaidi Junaidi Sri Sumiyati