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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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REKAYASA BIOPLASTIK UNTUK KEMASAN MAKANAN DARI KHITOSAN LIMBAH KULIT UDANG DAN PATI TAPIOKA, DENGAN MINYAK KELAPA SAWIT SEBAGAI PEMLASTIS Muhammad Hasan
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.i2.197

Abstract

Synthesis of biodegradable polymers is an alternative technology, which can be applied to cope with the problem of petrochemical raw materials packaging waste buildup. The purpose of this study was to obtain information on the effect of chitosan composition, tapioca starch and palm oil as plasticizer on mechanical and thermal properties, crystallinity, and oxygen permeability. Bioplastics was synthesis by blending tapioca starch, chitosan, and palm oil at various compositions. The results showed that bioplastic could be synthesized and printed in the form of film. Bioplastic films showed a low permeability, where the more content of chitosan in a mixture of bioplastics caused the lower permeability to oxygen. Tensile strength of the resulting film was low and the optimum value was achieved on chitosan/starch compoxition of 60/40. Elongation at the film break was strongly influenced by starch composition. High starch composition produced bioplastics with high elasticity. The melting point range was 133-150 °C. Films with the highest value of this parameter were produced from samples with tapioca starch/chitosan ratio of 60/40. Thermal resistance of the sample was determined by tapioca starch/chitosan ratio of 50/50, with weight loss of 41.395% at 475 oC. Almost all films produced in various compositions of chitosan/tapioca starch showed amorphous structure, except sample with tapioca starch/chitosan ratio of 10/90, which was semicrystalline.
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.
A NOVEL TREATMENT OF DYE WASTEWATER OF BATIK INDUSTRY BY A COMBINATION OF ALUMINIUM SULFATE AND NATURAL IRON COATED-SAND Izarul Machdar
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.199

Abstract

This paper presents the results of dye wastewater treatment of a batik industry in a batch experiment. The experiment was carried out by adding a mixture of aluminium sulfate as coagulant and natural iron oxide-coated sand (NICS) into the wastewater. Sedimentation rate of the formed flock was enhanced by a magnet. Initial COD concentration of the dye wastewater of 1060 mg/L was used in the experiment. Results of this research showed that the efficiency of the dye removal and settling time were affected by iron sand entrapped in the formed flocks. The highest efficiency of COD removal was 95%, or similar to the final COD concentration of 45 mg/L at settling time of 10 minutes. It could be concluded that the combination of aluminium sulfate and NICS could effectively be used in the treatment of the dye wastewater from batik industry.
PENGOLAHAN AIR YANG MENGANDUNG LINEAR ALKYL BENZENE SULFONATE (LAS) DAN AMONIA DENGAN KOMBINASI PROSES OZONASI GELEMBUNG MIKRO DAN FILTRASI MEMBRAN Setijo Bismo
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.200

Abstract

Salah satu upaya yang dilakukan untuk mengolah air yang mengandung senyawa Linear Alkyl Benzene Sulfonate (LAS) dan amonia adalah dengan proses ozonasi gelembung mikro dan filtrasi membran. Proses ini memanfaatkan keberadaan radikal hidroksida yang merupakan oksidator kuat yang mampu menguraikan senyawa organik dan anorganik bersifat racun dan sulit terurai di dalam air. Dari penelitian ini didapatkan bahwa proses ozonasi gelembung mikro dan filtrasi membran cukup efektif untuk menyisihkan senyawa LAS, namun tidak cukup efektif untuk menyisihkan senyawa amonia dalam air. Persentase penyisihan total LAS untuk konsentrasi awal 30 mg/L, 50 mg/L dan 100 mg/L masing-masing diperoleh sebesar 89,82 %; 84,20% dan 81,49% dan amonia sebesar 17,07%.
PENGOLAHAN LIMBAH CAIR INDUSTRI PUPUK UREA MENGGUNAKAN FILTER KERAMIK Subriyer Nasir
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.201

Abstract

The purpose of this research was to design the liquid waste treatment system using ceramic membrane filtration method. The ceramic filter was made of a mixture of clay and coal fly-ash with certain compositions. Rig in this experiment was equipped with PVC piping system, flowmeter, pressure gauge, and the circulation pump. The liquid waste tested was obtained from the secondary effluent of a fertilizer industry. The measured were feed flow rate, permeate flow rate, Total Dissolved Solid (TDS), pH, heavy metal content, and ammonia contents according to the Indonesian National Standards (SNI) of effluent water quality. The results showed that ceramic membrane could decrease the ammonia concentration in the secondary effluent up to 96%. Heavy metal ions (Fe, Cr and Mn) could be reduced to 60.9%, 39.4% and 38.4% respectively. The best composition of membrane/filter was achieved at a ratio of 77.5% clay, 20% fly ash and 2.5% of iron powder.
PENINGKATAN REAKTIVITAS SORBEN KALSIUM HIDROKSIDA DAN TANAH DIATOME (DE) Mariana Hasyim
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.202

Abstract

Gas emission from solid waste incineration contains dangerous gases such as sulfur oxides, hydrochloric acid, carbon monoxide, and others. Acid gas removal technology can be done by using dry and wet processes. The dry process is more economical than the wet process. However, the dry process has low efficiency in gas removal and sorbent utilization. One way to overcome this problem is to use a sorbent which has high reactivity. The aim of this research was to increase the reactivity of calcium hydroxide sorbent by using diatomaceous earth as silica source. The reaction between sulfur dioxide with calcium hydroxide to form calcium silicate hydrates (CaO.SiO2.2H2O), which has high porosity and reactivity. The experiment was carried out in two work phases. The first was preparation of sorbent and sorbent reactivity test. The sorbent preparation was done in a batch reactor by reacting calcium hydroxide and DE together with 100 g of water at various ratios of calcium hydroxide /DE with a weight ratio of water phase/solids of 10. The sorbent reactivity test was performed by determining methylene blue absorption by the sorbent. The results showed that the solid density and the weight of solid sample increased after the reaction. The conversion reaction increased with the increasing reaction temperature, mixing rate, and reaction time. The conversion rate was constant after 20 minutes. The highest conversion rate was obtained at 65oC. The experimental results also showed that the reactivity of combined Ca(OH)2/DE sorbent was higher than that of Ca(OH)2 only.
LEACHABLE BORON FROM FLY ASH Januarti Jaya Ekaputri
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.203

Abstract

Penelitian dilakukan untuk menentukan kandungan boron dalam abu terbang dengan Inductively Coupled Plasma Spectrometry (ICPS). Larutan fly ash dicampur dengan akuades kemudian dianalisis pH, waktu agitasi, konsentrasi boron, dan suhu. Terbukti bahwa abu terbang ditambah boron dapat cepat larut, yaitu sekitar 25%-30% dari kandungan boron total. Desorpsi ion boron terjadi sesudahnya. Setelah direndam lebih dari satu hari, penyerapan boron oleh fly ash meningkat sejalan dengan meningkatnya pH hingga 13. Keadaan ekuilibrium berubah setelah abu terbang kontak dengan air. Aluminium borat dapat melepaskan boron terlarut, sedangkan alkalinitas fly ash diyakini dapat membuat ion partikel pada permukaan fly ash mengikat boron.
METODE ESTIMASI PENYEBARAN POLUTAN DI UDARA Erna Apriliani
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.204

Abstract

Air pollution is the real problem in the metropolitan city and industrial area. Estimation of air pollution distribution is important for recommending emission minimization. Three estimation methods for air pollution distribution, namely numerical method (Euler and Runge-Kutta method), Recursive Least Square method and data assimilation (Kalman Filter) method were applied in this research. The algorithms and the simulations were described, the accuracy of each method was not compared, but the advantages and disadvantages of these methods were described. Distribution of carbon monoxide in Surabaya was estimated using these methods. This research showed that numerical method could not be applied in real condition. The RLS method needed a lot of time series data of concentration of pollution. The data assimilation method could be applied in real condition with a few time series pollutant data, and for estimating pollutant concentrations in some locations.
DAMPAK PERTUMBUHAN PENDUDUK TERHADAP BEBAN SUMBER PENCEMAR DI DANAU SENTANI DENGAN MODEL SISTEM DINAMIK BERWAWASAN LINGKUNGAN Auldry F. Walukow
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.205

Abstract

This research was aimed to analyze the erosion in the watershed (watershed) Sentani and to apply dynamic system model to analyze the effect of population growth on the source of pollutant loads in Sentani Lake. Universal Soil Loss Equation (USLE) method was used to estimate soil erosion from land and dynamic system model using powersim 2.5D tools in order to obtain a model of sustainable Sentani Lake management. Results of this experiment showed that the dynamic model approach to the management and planning of settlements and agricultural areas around Sentani Lake might facilitate the solution of pollutant source, erosion, and deforestation problems and determination of strategic policy for coping with these problems In addition, population growth was a leverage factor to the increase of pollutant sources, the limitation of forest land, residential land erosion, and erosion of agricultural land. However, structural intervention to human settlements and agricultural land should also be performed. The dynamic model of pollutant sources was Archetype Shifting the Burden.
APLIKASI ULTRASONIK DAN MICROWAVE UNTUK MEMURNIKAN KARBON NANOTUBE YANG DISINTESIS DENGAN METODE DEKOMPOSISI METANA Widodo Wahyu Purwanto
Purifikasi Vol 12 No 2 (2011): 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.v12.i2.206

Abstract

Karbon nanotube yang disintesis dengan metode dekomposisi katalitik metana masih memiliki kekurangan karena masih terdapat pengotor berupa logam katalis dan karbon amorf yang dapat mengurangi kualitas kemurnian karbon nanotube yang dihasilkan. Peningkatan kualitas karbon nanotube dapat dilakukan dengan cara pemurnian menggunakan pemanasan microwave dan pengadukan ultrasonik. Berdasarkan hasil analisis SEM dan XRD, pemurnian karbon nanotube dengan waktu pemanasan 20 menit dan waktu ultrasonikasi 60 menit menghasilkan produk karbon nanotube yang paling baik. Metoda tersebut terbukti efektif dalam memperbaiki struktur karbon nanotube yang dihasilkan, mereduksi jumlah partikel logam katalis yang terdapat pada karbon nanotube tanpa merusak kristal karbon dengan ukuran kristal karbon setelah pemurnian adalah 6,1 nm.

Page 15 of 39 | Total Record : 385

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