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Eddy Soedjono
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Chemical Engineering, Chemistry & Bioengineering Environmental Science

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PILIHAN TEKNOLOGI UNTUK PENGOLAHAN AIR LIMBAH DOMESTIK DI DAERAH PERI-URBAN DAN PERDESAAN DI JAWA TIMUR Eddy Soedjono
Purifikasi Vol 11 No 2 (2010): 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.v11.i2.198

Abstract

Sanitation is one of the infrastructures, which must be provided by the Government. The service coverage of wastewater treatment in peri-urban and rural areas is very poor in Indonesia. The Indonesian Government through Presidential Regulation no. 10/2010 endorses this coverage to be improved, both in urban and rural area. There are different technologies to treat wastewater which have been widely used in the public. The technologies must comply with relevant standards in Indonesia. This study was aimed to access different type of technologies, which have been commonly adopted by the community. Not only the acceptance of the technologies is accessed, but the understanding about the technologies is also explored, using a case study of East Java Province. Methods to access include literature study, field observation, group discussion, and interview. Target groups for the assessment are leaders and staff from central and provincial government, regency and municipality government, and district and village authorities. International donors like the World Bank and Asian Development Bank which work in sanitation sector are also targeted. Furthermore, non government organizations (NGOs), formal and informal local leaders, and the communities are also part of the assessment. Based on the current standards, the most widely accepted technology to treat domestic wastewater in the study area is pour flush toilet with septic tank, both for individual and communal system. Anaerobic baffled reactor (ABR) is well-known in the study area which is used for communal system as on-site and off-site system. The ABR produces biogas as a by-product. Feed-backs from the communities like risk assessment and proposed criteria for the technology are also compiled.
PEMBUATAN BRIKET BIOARANG DARI SEKAM PADI DENGAN PROSES KARBONISASI MENGGUNAKAN TUNGKU SEDERHANA Eddy Soedjono
Purifikasi Vol 6 No 2 (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 | Full PDF (204.209 KB) | DOI: 10.12962/j25983806.v6.i2.295

Abstract

Limbah padat pertanian berupa sekam padi, yang banyak terdapat di Desa Munggugebang, Kecamatan Benjeng, Kabupaten Gresik, Jawa Timur, ditumpuk dan dibiarkan begitu saja, serta kemudian dibakar sia-sia. Penelitian ini bertujuan untuk mengubah sekam menjadi briket bioarang, yang proses karbonisasinya menggunakan tungku sederhana dan drum baja, dengan bahan bakarnya adalah kayu. Arang dibuat dengan memvariasikan temperatur akhir karbonisasi (250oC, 300oC dan 350oC) dan waktu kontak pada temperatur akhir (10, 20 dan 40 menit), yang kemudian diuji nilai kalornya dengan menggunakan bom kalorimeter. Arang dengan nilai kalor tertinggi, kemudian dipadatkan dengan tekanan pemadatan bervariasi (5, 10 dan 20 kg/cm2), yang kemudian dilakukan uji kerapatan, kadar air, kadar abu, dan efisiensi pembakaran. Hasil penelitian menunjukkan bahwa nilai kalor tertinggi yang didapatkan hanya sebesar 3325,69 kal/gram, dimana berasal dari variasi temperatur 350oC dengan waktu kontak 40 menit. Jumlah kayu yang dibutuhkan untuk mencapai temperatur tersebut sebesar + 13,73 kg. Untuk variasi tekanan pemadatan yang terbesar, didapatkan nilai kerapatan paling besar 0,737 gr/cm3, nilai kadar air terkecil 10,96 %, dan efisiensi pembakaran terbaik atau waktu pembakaran tercepat 40,83 menit.
PENGOLAHAN LIMBAH CAIR INDUSTRI WOOD CARVING PT BALI DEVA AGUNG MENGGUNAKAN REAKTOR UPFLOW ANAEROBIC FILTER Eddy Soedjono
Purifikasi Vol 5 No 1 (2004): 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.v5.i1.301

Abstract

UAF merupakan reaktor pengolahan biologis secara attached growth, dimana bakteri pengurai bahan organik tumbuh melekat pada permukaan media. Hasil yang didapatkan dari penelitian ini menunjukkan bahwa perubahan waktu detensi mempengaruhi efisiensi reaktor dalam penurunan kandungan COD, TSS dan warna limbah industri wood carving. Efisiensi penurunan COD, TSS dan warna yang terbaik pada reaktor dengan waktu detensi 16 jam yang dioperasikan dengan beban organik rata-rata 1.176 kg COD/m3.hari. Penurunan COD, TSS dan warna yang dihasilkan berturut-turut sebesar 70,1% sampai 75,9%, 72,4% sampai 80,9% dan 70,1% sampai 72,3%.
LAJU SERAPAN LOGAM Pb OLEH CATTAIL (Typha latifolia) DENGAN METODE HIDROPONIK DAN LAHAN BASAH BUATAN Eddy Soedjono
Purifikasi Vol 5 No 3 (2004): 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 (476.163 KB) | DOI: 10.12962/j25983806.v5.i3.321

Abstract

The effect of waste water containing Pb, variations to plant life spans, and variations of soil has been studied to examine the absorption rate of Pb in Cattail by using Michaelis-Menten equation. The plants and sediments removed each four days to examine the Pb content in root, rhizome, and leaf of plant. The experiment showed that the growth rate of 3 months old Cattail using soil and sand were decreased but on the contrary in absorption rate, with Vmax at 22,573 mg/kg/day and Km at 3,562 l/d. The life spans of plant, waste concentrations and soil has influenced the uptake rate of Pb in plant significantly.
REKAYASA PEMBUATAN MEMBRAN SELULOSA ASETAT UNTUK PEMISAHAN LARUTAN DETERJEN Eddy Soedjono
Purifikasi Vol 4 No 3 (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 (219.937 KB) | DOI: 10.12962/j25983806.v4.i3.335

Abstract

Acetic cellulose membrane is made from acetic cellulose, formamide and acetone using variations of composition and condition. Flux and rejection value was influenced by the characteristic of the composition and thickness membrane, pressure and time of operation. The result showed that flux would decrease and the rejection would increase if the composition of the acetic cellulose too much, while the thickness didn’t influence rejection score, but decreased the flux. The optimum pressure of operation to obtain the hight flux and rejection on their process was 1,75 bar for membrane compotition 14,8% (w/w) of acetic cellulose and the thickness 0,083 mm for membrane with operation time 75 minute. The optimum result was flux permeate 432,92 L/m2 days and 93,09% rejection score.
PENGARUH RASIO RESIRKULASI DAN KONSENTRASI COD INFLUEN TERHADAP KINERJA REAKTOR HIBRID AEROBIK Eddy Soedjono
Purifikasi Vol 4 No 1 (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 (326.309 KB) | DOI: 10.12962/j25983806.v4.i1.353

Abstract

Hybrid aerobic laboratory scale reactor study was aimed to examine the reactor performance at different recirculation ratios and COD feed. Four reactors were constructed and run in parallel with recirculation ratio of 0%, 25%, 50%, and 75%. Using a synthetic wastewater, COD feeds were 200 mg/l, 400 mg/l, and 600 mg/l. The reactors performance, in fact, was affected by the recirculation ratio and COD feed. Higher recirculation ratio caused a better COD and ammonia removal. On the other hand, the removal decreased when COD feeds were increased. Based on the soluble COD and BOD concentration, the COD, BOD, and ammonia removal at two hour hydraulic retention time were 60 – 78%, 80 – 90%, and 30 – 55% respectively. Although the ammonia removal was happened, nitrification was not identified.
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