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Ervin Nurhayati
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Department of Environmental Engineering, ITS Campuss, Sukolilo, Surabaya, Indonesia
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INDONESIA
Jurnal Purifikasi
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 14113465     EISSN : 25983806     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Environmental Science
Jurnal Purifikasi was published since January 2000 by Division of Journal Purifikasi Department of Environmental Engineering-Faculty of Civil, Environment and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya in collaboration with the Association of Indonesian Sanitary and Environmental Techniques (IATPI) East Java. Jurnal Purifikasi is published twice a year in July and December, covers topics on technology and management related to environmental engineering field.
Arjuna Subject : -
Articles 385 Documents
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KINERJA MEMBRAN MIKROFILTRASI DALAM MENGURANGI BAKTERI PADA PROSES PEMURNIAN AIR Sri Mulyati
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.113

Abstract

Proses mikrofiltrasi adalah salah satu teknologi pengolahan air minum yang dapat menghilangkan padatan tersuspensi dan bakteri. Penelitian dilakukan dengan menggunakan membran polimer selulosa asetat sebagai media penyaring dengan ukuran pori 0,2 mm dan berdiameter 47 mm. Modul membran didesain dengan aliran dead-end (tegak lurus dengan lapisan membran) dan aliran crossflow (aliran silang). Proses ini dilakukan dengan memvariasikan tekanan operasi dan pH air baku. Dari hasil penelitian diperoleh harga koefisien permeabilitas air murni sebesar 2,7952 mL/detik.m2.bar. Rejeksi dan fluks maksimum yang diperoleh adalah sebagai berikut: fluks maksimum sebesar 6,325 mL/detik.m2 untuk aliran crossflow sedangkan aliran dead-end diperoleh sebesar 4,578 mL/detik.m2, fluks maksimum untuk kedua proses terjadi pada tekanan umpan 1,25 bar. Pada membran baik aliran crossflow maupun dead end rejeksi Escherichia coli dan kekeruhan tertinggi 100% diperoleh pada tekanan 0,25 bar untuk rejeksi E. coli dan 98,81% untuk rejeksi kekeruhan. Kondisi optimal untuk pH terjadi pada range pH 6-8, dimana fluks dan rejeksi maksimum didapat sebesar 100 %.
STUDI PENGARUH BULKING AGENTS PADA PROSES BIOREMEDIASI LUMPUR MINYAK Mochamad Arief Budihardjo
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.114

Abstract

Tujuan penelitian ini adalah untuk mengetahui kondisi media yang sesuai pada proses bioremediasi oil sludge, mengetahui besarnya efisiensi penyisihan Total Petroleum Hydrocarbons (TPH), dan mengetahui jenis bulking agents yang paling baik. Campuran bahan yang digunakan adalah tanah bersih, oil sludge, bulking agents, pupuk NPK, dan pupuk kandang. Kadar TPH awal yang digunakan sebesar 5,58%. Bulking agents yang digunakan adalah sekam padi, serbuk gergaji, dan rumput liar. Untuk variabel kontrol yang diukur adalah humidity, suhu, pH, dan nutrisi. Penelitian ini dibatasi hingga kadar TPH akhir maksimal 1%, sesuai dengan KepMenLH No 128/2003, yang mentoleransi kadar TPH maksimal 1%. Hasil penelitian menunjukkan rasio C/N/P yang menurun setelah 15 hari. Selain itu pH sebesar 5–9 telah memenuhi kriteria sebagai media yang sesuai bagi mikroba tanah (pH ideal 6-9). Suhu selama penelitian(15-450C) tergolong ideal bagi pertumbuhan bakteri. Kelembaban cenderung stabil antara 12-30%. Masing-masing windrow menunjukkan pola penurunan konsentrasi TPH yang tipikal. Kadar TPH pada akhir penelitian berbeda. Sedangkan efisiensi penyisihan TPH dengan menggunakan bulking agents sekam padi, rumput liar, dan serbuk gergaji masing-masing sebesar 76,85%, 87,05%, dan 79,43%. Windrow yang menunjukkan efisiensi penyisihan TPH terbesar dengan konsentrasi TPH akhir paling kecil, adalah windrow B, yaitu yang menggunakan bulking agents rumput liar.
EFISIENSI PENGOLAHAN LIMBAH OLI BENGKEL MENGGUNAKAN REAKTOR DISSOLVED AIR FLOTATION PADA SKALA LABORATORIUM Muhammad Irfa'i
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.115

Abstract

The increasing number of car service stations in Banjarmasin might increase the generation of hazardous oil waste to the environment. This research was aimed to -obtain the optimum efficiency of a laboratory scale Disolved Air Flotation (DAF) for reducing oil waste pollutant concentration. The reactor was designed based on some variations of detention time, air supply and feeding rate. The experiment was expected to result in optimum design criteria for reducing oil waste pollutant. This research was conducted on a laboratory scale DAF system. Result of this research showed average oil/grease removal efficiency of 86,65% for the detention time of 30 minutes, with by DAF system, mean 85,62% at giving of air 45 L/minutes and 89,94% for high feed (K3). Based on Two Way ANOVA test of significant difference of exclusion of oil waste which significant at variation giving of air, time contact and giving feed.
PROSES BIOSORPSI CU DAN PHENOL DALAM KONDISI TUNGGAL MAUPUN SIMULTAN DENGAN MENGGUNAKAN LUMPUR AKTIF KERING Yunus Fransiscus
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.116

Abstract

The application of dried activated sludge as a biosorbent for copper and phenol was studied. From a series of batch experiment for single component, it was determined the sorption capacity of biosorbent are 29 mg/L and 98 mg/L for copper and phenol respectively. Sorption isotherm showed that these two adsorbates have different sorption mechanism. copper was able to form a more complete monolayer, while phenol tend to form a multilayer reaction. In simultaneous experiments it was concluded that phenol was more dominant than copper. The sorption capacity of biosorbent for copper decreased gradually as the increasing of phenol concentration. This condition was not reversible, sorption capacity of biosorbent for phenol was more stable. eventhough copper concentration was increased.
PENURUNAN KONSENTRASI COD DAN FENOL AIR LUMPUR LAPINDO DENGAN METODE OKSIDASI FENTON DAN UV Evy Hendriarianti
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.117

Abstract

This research was carried out to investigate the removal of COD and phenol sludge filtrate by Fenton oxidation and UV after the treatment of coagulation-flocculation-sedimentation. Variation of treatments included UV intensity, H2O2 and FeSO4 concentration, and illumination time was 3 hours. The results showed that 92,71 % of COD removal and 100% of phenol removal (undetectable phenol) occurred at 36 Watt of UV, 250 mg/L of H2O2 and at 36 Watt of UV, 500 mg/L of H2O2. While 84,24% of COD removal occurred at Fenton variation of 500 mg/L of H2O2 : 100 mg/L of FeSO4 and 72 watt of UV light. Phenol removal of 98,84 % occurred at Fenton variation of 500 mg/L of H2O2 : 100 mg/L of FeSO4. and 36 watt of UV light.
ESTIMASI LAJU EROSI/DEPOSIT PADA LAHAN OLAHAN KECIL DI PUNCAK-BOGOR DENGAN ISOTOP ALAM 137Cs Nita Suhartini
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.118

Abstract

Investigation of the erosion rate estimation had been done using environmental isotope 137Cs. Radiogenic 137Cs contents of the soil can be used to estimate the amount of erosion/deposition in an area that has been occurring since the late 1950’s, with respect to the stable reference site. The investigation aimed to estimate erosion/deposit rate in small cultivated site that using ridge and furrow system located in Puncak - Bogor. Sampling of soil was done by using scraper (20 x 50) cm for reference site, and coring (Φi = 7 cm) for investigation points. Two small cultivated sites were chosen namely TS3 (50 x 60) m, and TS5 (50 x 60) m. The result showed that net erosion for TS3 and TS5 were -5 ton/ha.year and -39 ton/ha.year, respectively.
QUANTITATIVE ANALYSIS OF NITROGEN COMPOUNDS IN PADDY FIELDS AMMENDED WITH UREA FERTILIZER Siti Khodijah Chaerun
Purifikasi Vol 8 No 1 (2007): 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.v8.i1.119

Abstract

A field experiment was conducted to quantitatively analyze nitrogen (N) compounds as both inorganic and organic N (measured as total Kjeldahl N (TKN), NH4+-N, NO2--N, NO3--N, organic N and total N) and N pollution loading (measured as total N load) in paddy fields after the application of various dosages of urea [CO(NH2)2] fertilizer. Three urea levels (0, 200, and 300 kg urea/ha) and IR64 rice were used in a factorial designed experiments. The irrigation water in both outlet and inlet water flow was sampled after urea surface application at 0, 15 and 35 days after planting (DAP) and those of N concentrations were determined. In general, the urea fertilizer application of three N levels showed significantly increased inorganic and organic N concentrations in outlet irrigation water (P < 0,05) but did not increase total N load (P > 0,05) compared to inlet irrigation water. When no urea fertilizer was applied (0 kg urea/ha), high N concentration was measured in irrigation water, indicating that irrigated water system had carried N compounds other than urea fertilizer applied. All the N compounds increased significantly except for NO2--N and total N at 0 kg urea/ha, NO2--N and organic N at 200 kg urea/ha, and TKN at 300 kg urea/ha, which were not significantly different between outlet and inlet irrigation water (P > 0,05). These results revealed that although the three urea fertilizer application levels did not increase N loading, they have a significant effect on both inorganic and organic N concentrations in surface water runoff, thus eventually entering and polluting the water receiving bodies with the subsequent increase of eutrophication.
MEKANISME PENURUNAN JUMLAH BAKTERI INDIKATOR DALAM PROSES KOAGULASI FLOKULASI Ignasius Dwi Atmana Sutapa
Purifikasi Vol 8 No 2 (2007): 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.v8.i2.120

Abstract

Aplikasi koagulan merupakan salah satu cara yang efektif dalam menurunkan jumlah bakteri indikator dalam proses pengolahan air bersih. Untuk mendapatkan kinerja koagulan yang optimal dalam sistem pengolahan air bersih, mekanisme penurunan jumlah bakteri indikator oleh koagulan perlu dipelajari. Hingga kini, belum ada penelitian yang menjelaskan bagaimana mekanisme koagulan menurunkan jumlah bakteri indikator. Tujuan penelitian ini adalah untuk mempelajari mekanisme penurunan jumlah bakteri indikator yang terjadi akibat aplikasi koagulan. Penelitian ini dilakukan dengan menghitung jumlah bakteri indikator dalam sampel yang diambil dari Situ Cibuntu. Metode penghitungan jumlah bakteri indikator yang digunakan adalah metode membran filter. Dalam penelitian ini juga dilakukan pengukuran parameter fisik dan kimia air selama proses pengolahan seperti turbiditas, pH, dan kandungan nutrien dalam air. Hasil penelitian menunjukkan bahwa proses penurunan jumlah bakteri indikator akibat aplikasi koagulan terdiri dari tiga mekanisme yang diduga terjadi bersamaan, yaitu penurunan pH, penjebakan bakteri dalam flok, dan penurunan kandungan nutrien dalam air.
PENGUJIAN NUTRIEN ANORGANIK UNTUK BIOREMEDIASI TUMPAHAN MINYAK MENTAH DENGAN METODE BIOSTIMULASI DI LINGKUNGAN PANTAI SURABAYA TIMUR Munawar Munawar
Purifikasi Vol 8 No 2 (2007): 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.v8.i2.121

Abstract

Bioremediation is an application of biological processes to treat ground water, soil, and mud contaminated with hazardous chemical. In this study, inorganic nutrient of commercial NPK fertilizer was applied. Crude oil was from Pertamina oil source of Cepu, Center Java. Crude oil was applied based on a consideration that many oil spill accidents spilled crude oil. The site was coastal area in Keputih, Sukolilo, Eastern Surabaya. In the study, experimental squares of 0,5 m x 0,5 m was made, each square had 0,25 m space. There were 18 experimental squares and one control square. Variables consist of nutrient level (0,2; 0,3; and 0,4 kg/square) and soil treatment (tilled and not). It was observed from study that inorganic nutrient significantly affected the decrease of crude oil concentration. It was also observed that tilled soil resulted in better effect and could decrease oil concentration until 36,61%. Otherwise, untilled soil decreased only 32,33%.
Adsorption of Cadmium (II) and Lead (II) by Agricultural Wastes Indrajati Kohar
Purifikasi Vol 8 No 2 (2007): 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.v8.i2.122

Abstract

As heavy metal pollution becomes a growing concern in the world, many environmentally friendly ways to remove heavy metals have been studied. Agricultural waste is an option for this purpose. In this paper, four agricultural wastes were studied towards their ability to adsorb Pb(II) and Cd(II) from aqueous solutions at concentrations of 1, 2.5 and 5 mg/L, viz. rice straw, sweet rice straw, sugar cane bagasse, and activated carbon from sugar cane bagasse as a reference. Carbon from sugar cane bagasse showed better adsorption efficiencies for Pb(II) and Cd(II) than the other three adsorbents (rice straw, sweet rice straw, and sugar cane bagasse). Adsorption activity on Pb(II) was: rice straw ≈ sweet rice straw > bagasse, while on Cd(II): sugar cane bagasse ≈ rice straw ≈ sweet rice straw. However, the adsorption capacities of the three types of adsorbent do not much lower than the activated carbon, where as the activated carbon is much costly. The higher the initial concentrations of Cd(II) and Pb(II) solutions, the lower % of metal adsorbed, even though the mg of metals adsorbed/g adsorbent increased.

Page 7 of 39 | Total Record : 385

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