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Ervin Nurhayati
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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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PRODUKSI ALKOHOL DARI SAMPAH RUMAH TANGGA Nanang Mudjito
Purifikasi Vol 10 No 1 (2009): 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.v10.i1.165

Abstract

This research was aimed to produce alcohol from organic solid waste using Saccharomyces cerevisiae. The solid waste was treated in varied sizes and yeast concentrations. The procedure involved size reduction by cutting the solid waste, followed by steaming. The next stage was addition of yeast for fermentation. Size variations were 3 and 10 cm. Each sample was of 2 kg weight. Samples were steamed for 30 and 60 minutes. Yeast was added in different amounts of 0%, 10%, 20%, and 30%. Fermentation was done within 2, 4 and 8 days. The highest alcohol volume of 505 mL was obtained in the reactor, WITH fine solid waste of 3 cm, which had been steamed for 60 minutes, and added by of 30% yeast, with fermentation time of 8 days.
BIOGAS SEBAGAI PENGGANTI MINYAK TANAH DAN KAYU BAKAR UNTUK BAHAN BAKAR ALTERNATIF RUMAH TANGGA Nanang Mudjito
Purifikasi Vol 10 No 1 (2009): 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.v10.i1.166

Abstract

Main problem about study of biogas exploitation for domestic alternative fuel is related to economic value which is directly felt by consumer society. Target of this study is to assist society, mostly of their resident look after ox livestock, in order to exploit potency of livestock dirt to be processed become main fuel becoming domestic requirement. Study of biogas exploitation conducted by compared calor value yielded from three digester that is digester from HILINK UNMER program, Department of Agriculture and Self-Supporting Socialize. Then compared calor value between biogas, kerosene, and firewood. Based the result of economics calor value examination, results that biogas calor is higher if compared with kerosene and firewood. Based on economic calculation results, the consuming of biogas as a main fuel, is more able to thrift economize budget compared than that kerosene and firewood fuel.
PHYSICOCHEMICAL CHARACTERIZATION OF PADDY SOILS CONTAMINATED WITH INDUSTRIAL WASTEWATERS: IMPLICATIONS FOR BIOREMEDIATION Siti Khodijah Chaerun
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.169

Abstract

Concern has mounted over recent decades regarding the paddy soils located in Rancaekek, Bandung, West Java, Indonesia that have been heavily polluted by industrial effluents for many years. Recent efforts to remediate the heavily polluted sites have failed due to incomplete understanding of the site characteristics. Hence, this study dealt with the physicochemical characterization of these soils to acquire a better understanding of the physicochemical impacts and eventually improve their soil quality so that they would again be suitable for agriculture. The polluted soils contained much higher salt concentrations, higher salinity, and elevated levels of heavy metals (Cr, Mn, Cu and Zn) than unpolluted soils at control sites. However, no significant difference was observed in the mean of pH between all sites. Maximum water holding capacity and cation exchange capacity (Na and K) in polluted soils were significantly greater than those in unpolluted soils. Moreover, the polluted soils had higher contents of N, P, K, S, organic C, and lower C/N ratio than unpolluted soils. These results indicate that the industrial wastewaters-contaminated paddy soils have major changes in their physicochemical characteristics, therefore being informative to the development of bioremediation strategies of these soils.
KINETIKA BIOSORPSI Cr(VI) DALAM LARUTAN MENGGUNAKAN BIOMASSA Phanerochaete chrysosporium Soeprijanto Soeprijanto
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.170

Abstract

The aims of this research were to study the ability of Phanerochaete chrysosporium biomass to adsorb metal ion of Cr(VI), to obtain equilibrium data concentrations and biosorption kinetics. P. chrysosporium was incubated in a sterilized liquid media of peptone 12.5 g/L and 50 g/L glucose at 35oC for 6 days. The obtained biomass culture was treated with NaOH 0.5 N, and then boiled for 15 minutes. A variety of biomass concentrations were mixed with 200 mg Cr(VI)/L in erlenmeyer flasks and vibrated by a shaker at 300 rpm during 0-200 minutes. Cr(VI) concentrations were measured using a spectrophotometer at 540 nm. The results showed that the maximum capacity of biosorption was approximately 5.13 mg/g. Estimation of biokinetic parameter, k1 was 0.015 minute-1 with a correlation coefficient of 0.91. It was concluded that the amount of P. chrysosporium biomass affected the equilibrium concentrations of Cr(VI) ions. The biosorption kinetics of Cr(VI) ion followed the equation of first order reaction.
PENGARUH pH DAN KARAKTERISTIK AIR PADA PEMBENTUKAN LOW MOLECULAR WEIGHT ORGANIC: ALDEHIDA, AKIBAT PROSES PRADESINFEKSI DENGAN OZON Mohammad Rangga Sururi
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.171

Abstract

The aim of this research was to determine the influence of pH and water characteristics to low molecular weight (LMW) organic formation, particularly aldehydes, in predisinfection process by using ozone. Ozone gas can be supplied continually into batch system contactors of 7 L volume. The measurement was done at contact time of 3, 5, and 10 minutes at any pH conditions. The water sample was taken from WTP of Water Supply Company of Bandung City. Based on the research, aldehyde composition percentage which was detected by GC-MS, had increased gradually until a contact time of 10 minutes. This result was influenced by the quantity of hydrophobic nature of organic matter in water sample. At residual concentration of ozone/TOC below 0,012, aldehyde was not detected either at acidic or basic pH, but was detected at neutral condition at any range of contact time. Aldehyde formation was influenced by the quantity and kinds of precursors, their concentrations and contact time of ozonation. In addition, pH value gave significant influence at the third minute of contact time.
KARAKTERISTIK SOUND TRANSMISSION LOSS PINTU AKUSTIK YANG DIGUNAKAN SEBAGAI PENGHALANG KEBISINGAN Achmad Suandi
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.172

Abstract

This paper presents the sound transmission through acoustic doors. In addition, the possibility of an appreciable sound leak on the acoustic door is briefly discussed. Characterization of two different types of acoustic doors has been done, namely single and double opening acoustic doors. Acoustic door is frequently used to reduce noise level inside a room, which is emitted from noise sources, such as blower, generator set, industrial machinery, etc. Excellent acoustic quality can be achieved by acoustic doors which can produce high sound transmission class values (STC). The STC values can be measured by sound transmission loss tests. The sound transmission loss tests for both acoustic doors were carried out in the noise source and receiving rooms at Acoustic Laboratory of Puslit KIM-LIPI, Serpong. Based on the measurement results, it was proved that single opening acoustic door produced higher STC values than that of double opening acoustic door. The single opening acoustic door had an STC of 49 dB, whereas the double opening acoustic door resulted in STC of 47 dB.
PERAN FUNGI Phanerochaete chrysosporium DALAM PROSES PRETREATMENT BAGASSE DAN TANDAN KOSONG KELAPA SAWIT MENJADI SUMBER ENERGI TERBARUKAN Nuniek Hendrianie
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.173

Abstract

Bagasse and oil palm empty fruit bunches are high cellulosic waste, which contain considerably high lignocellulosic compounds. Therefore, these waste can potentially be used as renewable energy source. This experimental work utilised bagasse and oil palm empty fruit bunches as raw material in biogas production. The reason of using this high cellulosic waste as raw material of biogas had a constraint in hydrolyses process. Therefore, cellulosic pretreatment should be carried out before biogas production process. A biological pretreatment using fungi is chosen, because it produces better result than other methods. The aim of this experiment is to investigate the performance of Phanerochaete chrysosporium on the pretreatment of bagasse and oil palm empty fruit bunches, and its effect on biogas qualities and quantities. The method used in this experimental work was divided into two steps, which were fungal pretreatment and biogas production. Bagasse waste was collected from a Sugar Plant (PT PG Tjandi), and oil palm empty fruit bunches was from PT Sajang Heulang Angsana Mini Factory. The wastes were grinded and added with a ratio of 1:8 of water - P. chrysosporium culture. Then it was innoculated in PDA for 7 days, and filled into culture medium of pH 8. This culture was homogenised until fungi concentration of 5 x 106 spore/ml. Waste sludge and fungi were filled into stirred and aerated pretreatment tank at a temperature range of 35-40°C, and pH value of 4-4.5 for 7 days. While fungal pretreatment was prepared, starter for biogas production process was made by mixing manure and water in a ratio of 1:2. This mixture was fermented for 5 days. Waste resulted from fungal pretreatment was mixed with starter and water in ratio of starter : waste : water as 1:2:4. Reactor temperature was kept constant at 30°C, with a fermentation period of 15 days. The best experimental result was reached at 20% fungi added. At this composition glucose concentration in oil palm empty fruit bunches reactor was 11.085%, from the initial glucose concentration of 5.78%. The cellulose content decreased from 71.68 to 41.35%. The best gas composition was 75.82% methane with heating value of 11248 kkal/kg. This composition was reached by 20% fungi added.
BEBAN PENCEMARAN LIMBAH CAIR INDUSTRI TAHU DAN ANALISIS ALTERNATIF STRATEGI PENGELOLAANNYA Muhammad Romli; Suprihatin Suprihatin
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.174

Abstract

This research work is aimed to evaluate the process performance profile of tofu industry and its associated pollution load as well as analysing its management strategy. The work was carried out through industrial survey and measurement in various technological states of tofu processing in the regions of Tegal, Klaten, Solo, Jakarta, and Bogor. An experimental work was also conducted to optimise the level of process water usage in tofu processing. The research work showed that every 1 kg soybean processed results in 3.3±0.7 kg tofu curd, 2.0-2.2 kg pressed cake, and 17±3 L effluent in average. This wastewater exhibits the main source of environmental pollution, having the characteristics of BOD5, total COD, soluble COD, TSS, and TKN of 50±8, 110±20, 80±20, 9±3, and 4±2 g/kg soybean processed, respectively. The experimental work indicated that varying the amount of process water in the range of 16-25 L/kg soybean did not result in a significant improvement of the product yield as well as pressed cake. Based on the measurement results, the laboratory analysis, and theoretical information, this paper demonstrates quantitatively some potential benefits derived from utilising the organic content of tofu processing effluent by treating it anaerobically to generate biogas.
PREDICTION OF RURAL WATER SUPPLY SYSTEM SUSTAINABILITY USING A MATHEMATICAL MODEL Ali Masduqi
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.175

Abstract

One of Millennium Development Goals (MDGs) targets is halving the proportion of people without access to safe drinking water and basic sanitation facilities in 2015. Government of Indonesia will develop water services in the future, particularly for rural poor communities, to achieve the target. It is expected that developed water supply systems for the poor in the future are sustainable. However, it is difficult to ensure the success of the developed systems. In order to know the success or failure of the developed systems, a tool to predict sustainability of water supply system in the future is needed. Study on rural water supply systems sustainability using a mathematical model has resulted in prediction of the sustainability. The model is obtained from data analysis of rural water supply systems in Brantas River Basin, East Java, Indonesia using the structural equation modeling (SEM). The data were quantitative and qualitative ones that consist of physical condition of region, social economic, water supply management, as well as water quality. Results of the study are mathematical equation of sustainability model, level of sustainability, and recommended methodology for decision-making of rural water supply projects. This model needs nine data input, they are availability of water sources, selection of technology, investment cost, technical operation, institutional management, existence and ability of operator, availability of spare parts, operation cost, and community participation. The prediction produces sustainability index that can be classified into three levels, they are low sustainability (index = 0.052 to 1.320), moderate sustainability (index = 1.321 to 1.914), and high sustainability (index = 1.915 to 2.507).
PEMBUATAN DAN UJI KARAKTERISASI MEMBRAN SERAT BERONGGA POLIETERSULFON UNTUK PROSES PEMURNIAN AIR Nasrul Arahman
Purifikasi Vol 10 No 2 (2009): 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.v10.i2.176

Abstract

Polymeric porous membranes are generally prepared by the phase separation of polymer solution. In this work, hollow fiber membrane was prepared by nonsolvent induced phase separation (NIPS). Effect of addition of surfactant Tetronic on the performance and characteristic of resulting membrane were investigated. The control PES membrane has the highest water contact angle, indicating the lowest hydrophilic. With addition of surfactant Tetronic in the polymer blend hollow fiber membrane, the water contact angle decreased indicates that the membrane surface is more hydrophilic. Scanning electron microscopy (SEM) images for all of the membrane showed the structure of fiber with finger-like macrovoids through the cross-section. The sponge-type of structure in the center path of original membrane was disappeared with addition of Tetronic. Ultrafiltration experiment results showed that water permeability was increased with addition of surfactant Tetronic. According to the characteristics of resulting membrane such as hydrophilicity, ultrafiltration performance, and pores structure, surfactant Tetronic was a good additive to produce hydrophilic membrane for drinking water application.

Page 12 of 39 | Total Record : 385

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