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Dewi Dwirianti
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Chemical Engineering, Chemistry & Bioengineering Environmental Science

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KAJIAN SISTEM PENGANGKUTAN SAMPAH KABUPATEN MAGETAN Dewi Dwirianti
Purifikasi Vol 6 No 1 (2005): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v6.i1.261

Abstract

Magetan Municipality with the average of solid generation was 2L/person/day .The methods used in the study were interview and observation to all solid waste transport vehicles. Analysis of the technical aspect analysis included transportation time, efficiency, number of vehicles, amount of transported solid waste, existing route, alternatives for service area development and route improvement. This study showed that the waste transport efficiencies of the dump trucks and the manual trucks could be increased from the existing 1 to 2 trips/day. Additionally, the efficiency of the pick up vehicle could be increased from 1 to 3 trips/day. In the solid waste transport using Hauled Container System (HCS), the efficiency could be increased from 4 to 6 trips/day using the current off route factor, and increased to 8 trips/days with the reduction of off factor from 0,38 to 0,18.
IDENTIFIKASI SPESIES SULFAT REDUCING BACTERIA (SBR) DENGAN POLIMERASE CHAIN REACTION (PCR) PADA MEMBRANE BIOREACTOR (MBR) Dewi Dwirianti
Purifikasi Vol 4 No 4 (2003): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.414 KB) | DOI: 10.12962/j25983806.v4.i4.329

Abstract

Air limbah konsentrasi sulfat yang tinggi dijumpai pada air limbah domestik, efluen minyak kelapa sawit dan industri karet. Masalah yang ditimbulkannya adalah bau dan korosi dari reduksi sulfat menjadi hidrogen sulfida. Reduksi ini terjadi pada kondisi anaerobik oleh aktifitas SBR. Tujuan dari penelitian ini mengidentifikasi SBR dengan metode PCR pada MBR. MBR yang digunakan terdiri dari 2 kompartemen. Kompartemen pertama dijaga pada kondisi anaerobik sedangkan kompartemen kedua diletakkan membran mikrofiltrasi dengan ukuran pori 0,2 mm. Hasilnya adalah SRB 385 dijumpai sebagai komunitas mikroba yang dapat mereduksi sulfat pada air limbah.
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