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All Journal JURNAL AIR INDONESIA JURNAL TEKNOLOGI LINGKUNGAN Jurnal Rekayasa Lingkungan
wahyu purwanta
Pusat Teknologi Lingkungan-BPPT
Agriculture, Biological Sciences & Forestry Environmental Science

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PERUBAHAN PARAMETER BIOGEOFISIK DAN LINGKUNGAN TPA SAMPAH LEUWIGAJAH PASCA BENCANA LONGSOR Purwanta, Wahyu
Jurnal Rekayasa Lingkungan Vol 4, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.287 KB)

Abstract

This study is conduct to evaluate the changes of biogeophysical aspects of Leuwigajah Dumping Area (TPA) after the slidding event of municipal solid wastes in 2005. It is necessary to reuse the TPA in the future through rehabilitation and revitalitation.The study is important due to the detail engineering design (DED) of new TPA which is still in an on going process, whereas need some consideration from technical and non-technical aspects. The result of geological survey showed that there is no signifi cant changes in geological condition, whether the changes were found in groundwater and surface water quality, before and after the slidding event. At the other side, the result of existing solid waste material showed that a high heavy metals content was found in the bulk material. It isalso found that the quality of degraded material yet is closed to compost, with a C/N ratio between 12,04 to 15,74. This compost-soil is recommended for daily cover soil at the TPA. So, before operating a new TPA, landfi ll mining must be done as initial activity.To reduce or minimize environmental impact the new TPA has to apply sanitary landfi ll method.Key words : biogeophysical, post slidding , Leuwigajah dumping area
PERFORMANCE TESTS OF COMPOST AND PADDY SOIL MEDIA BED ON GHG (CH4 & CO2) ELIMINATION IN LANDFILL Purwanta, Wahyu
Jurnal Rekayasa Lingkungan Vol 8, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (443.07 KB)

Abstract

One method to reduce emissions of CH4 from municipal solid waste landfill is to modify the final cover layer. Methane (CH4) oxidation by methanotrophs bacteria in the soil cover layer can reduce the concentration of the CH4 emission to the atmosphere. Through field experiments, tested the effect of media bed thickness, moisture and nutrient content in the form of a media bed type that is compost and paddy soil. In general, the efficiency of oxidation by using compost media is higher than the use of paddy soil cover. For both media bed, moisture content 30% more efficient in the oxidation of CH4 compared to 20%. Moisture content determines the rate of gas diffusion between media bed with its gas phase (CH4 and O2). While for a thickness of 25 cm also produced a higher oxidation rate than the 15 cm because of the methanotrophs population.keywords: landfill gas; biofiltration; methane oxydation
TINJAUAN TEKNOLOGI PENGOLAHAN LEACHATE DI TEMPAT PEMBUANGAN AKHIR (TPA) SAMPAH PERKOTAAN Purwanta, Wahyu
Jurnal Air Indonesia Vol. 3 No. 1 (2007): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (160.627 KB) | DOI: 10.29122/jai.v3i1.2318

Abstract

Leachate is defined as a liquid, which flows through waste and extracts suspended material or their suspension. In most landfill, leachate is consist of liquids that go into the landfill, which originated from outside the landfill, such as surface drainage, rain water, ground water, water from spring water and other liquids which produced from waste decomposition. The existence of pollutant material or minerals in water body that is originated from leachate will propose the growth of microorganisms, which are harmful for human health and reduce the aesthetic. Leachate handling could be done with several methods, such as: utilization of hydrolic characteristics by ground water adjustment, thus the leachate flows would not go into the direction of ground water. Another way of leachate handling are: landfill isolation, in order to prevent the inflow of external water and the outflow of leachate water; site selection of an area, which has a good capability of pollutant neutralization; leachate recirculation to be redirected to the solid waste pile; flowing the leachate to domestic waste treatment system and leachate processing with a certain system. Some processing techniques that are often to be used are: physical-chemical processing, such as coagulation-flocculation-settling; aerobic processing (activated sludge, stabilization pond or aeration pond); anaerobic processing, such as stabilization pond and utilization of sorption characteristics, such as active carbon. The aerobic stabilization pond system is suitable for Indonesian condition due to the availability of sunlight, simple, relatively cheap and their capability of BOD reduction above of 90% and COD reduction of above 80%.Kata Kunci : Leachate, TPA sampah, teknologi pengolahan.
KAJIAN PENERAPAN PRINSIP PRODUKSI BERSIH PADA PROSES MANUFAKTUR PIPA APUNG purwanta, wahyu
Jurnal Teknologi Lingkungan Vol. 5 No. 3 (2004): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (181.26 KB) | DOI: 10.29122/jtl.v5i3.322

Abstract

Manufacture process of floating hose is a rubber technical commodity process, which has potencies to pollute the environment. Two types of waste, which are produced from the purification process and rubber latex process, are liquid and solid waste. Beside those waste, the component developing process, which uses several chemical agents, also has negative impacts to the human who has intensive contacts with those chemicals. Calendering and vulcanisation process are also produce air pollutants, especially the contaminated air from some harmful parameters. Considering that floating hose product will be used by oil companies with very high technical specification, it is necessary to prepare an environmental friendly material and construction technic. Those eco-efficiency planning should bearranged since the beginning, from the using of energy and water resources until waste management and disposal and good house keeping. All materials should be choosen with environmental approach and 4R principle (reduce, reuse, recovery and recycle) must be used for waste disposal activity.
Perancangan ID Fan dan Cerobong pada Unit Pembangkit Listrik Tenaga Sampah Purwanta, Wahyu; Suryanto, Feddy
Jurnal Teknologi Lingkungan Vol. 19 No. 2 (2018)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.564 KB) | DOI: 10.29122/jtl.v19i2.2786

Abstract

ABSTRACTThe problem for big cities in implementing the MSW disposal method is the  land availability. Hierarchically, a suitable method for solving this condition is not to dispose the MSW into the landfill but to treat it in the thermal processing, such as incineration. The bonus of this incineration is the heat dissipation that can be utilized to generate electricity. Burning MSW through incinerator that converts into energy is often called a Waste to Energy (WtE) or PLTSa.  Beside the benefit of the high temperature flue gas that can produce electricity, PLTSa also emits major pollutants in the flue gas such as particulates, SO2, NOx, CO, HCl, dioxins and furans. In order to meet the emission standards, the PLTSa design has to be equipped with APCD’s such as cyclone, semi-dry scrubber and bag filter. ID fan withdraws the flue gas into the chimney before discharging it into the ambient air through the top exit of chimney. The main parameters in the design of the ID fan and chimney are the quantity, quality and temperature of the flue gas as well as the environmental parameters, such as air temperature, atmospheric stability, wind speed and direction. The design of the chimney was carried out with a technical calculation approach, simulation of Gaussian dispersion model and the compliance of related regulations from the MoEF. In the design of PLTSa with a waste capacity of 350 tons/day, specification of the stack is 2.02 m diameter and the 70 m height whereas ID fan is 70,000 cfm flue gas flowrate, 400 BHP power, 80% mechanical efficiency and  25 inch H2O pressure pump.Keywords: Waste-to-energy, flue gas, ID fan, chimneyABSTRAKSalah satu masalah bagi kota-kota besar dalam menerapkan metode pengolahan sampah adalah ketersediaan lahan. Secara hierarkis metode yang mampu memenuhi kondisi ini adalah pengolahan dengan metode termal sekaligus memanfaatkan buangan panas yang ada untuk membangkitkan energi listrik. Pembakaran sampah dengan insinerator yang merubah sampah menjadi energi ini sering juga disebut   Pembangkit Listrik Tenaga Sampah (PLTSa). Salah satu hasil samping PLTSa adalah flue gas yang temperaturnya tinggi serta mengandung polutan utama seperti partikulat, SO2, NOx dan CO.  Agar memenuhi baku mutu emisi,  rancangan PLTSa dalam studi ini dilengkapi dengan unit cyclone, semi dry scrubber, bag filter dan ID fan serta cerobong sebagai unit pembuangan akhir flue gas. Sebagai unit akhir pembuang flue gas ke lingkungan, peran cerobong sangat penting sehingga perlu beberapa pendekatan dalam perancangan. Parameter desain utama dalam perancangan cerobong adalah kuantitas, kualitas dan suhu dari flue gas serta parameter meterologis lingkungan seperti suhu udara, stabilitas atmosfer, kecepatan dan arah angin. Dalam perancangan cerobong pada studi ini dilakukan dengan pendekatan perhtiungan teknis, simulasi model dispersi Gaussian serta peraturan terkait dari Kementerian Lingkungan Hidup dan Kehutanan. Dalam rancangan PLTSa  dengan kapasitas olah sampah 350 ton/hari ditetapkan diameter cerobong 2,05 m dengan tinggi 70 m, serta diperlukan ID fan sebagai pendorong flue gas dengan spesifikasi Q = 70.000 cfm, BHP = 400, mechanical efficiency 80% dan static pressure pompa = 25 inch H2O.Kata kunci: Sampah menjadi energi, gas buang, ID fan, cerobong
PENGHITUNGAN EMISI KARBON DARI LIMA SEKTOR PEMBANGUNAN BERDASAR METODE IPCC DENGAN VERIFIKASI FAKTOR EMISI DAN DATA AKTIVITAS LOKAL Purwanta, Wahyu
Jurnal Teknologi Lingkungan Vol. 11 No. 1 (2010)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.094 KB) | DOI: 10.29122/jtl.v11i1.1224

Abstract

After ratifying the Kyoto Protocol, Indonesia has obligation to make report on National GHGs emission for UNFCCC. There are some studies at national level related to GHGs inventory. In this study we calculated GHG (CO2 and CH4) emissions from 5 (five) sectors i.e forestry, energy, industry, agriculture and waste. Calculation use 2006 IPCC method with local values for verification or enhanced the Tier of method. The local values are, forestry allometric equation, emission factor of paddy field, generation and composition of municipal solid waste, solid waste management as well. Calculation result of GHGs emission in this study is 827,058 Gg/year in the term of CO2 equivalent. This numbers isestimated arround 60% of the realistic numbers due to the accuracy of the transportation data and unaccounted peat fire data in the study. Carbon emission from peat fire is the biggest emission. From all sector has calculated, forestry sector is the biggest CO2e emmitor with contribute arround 58%, follow energy sector (25%), agriculture (8% ),industry sector (6%), and waste sector (3%). The proportion of distribution each sector can change if the data more broad the calculation include more detail in sub sectors.Key words : GHGs Emissions, Local Values, Sector Contribution
PENGHITUNGAN EMISI GAS RUMAH KACA (GRK) DARI SEKTOR SAMPAH PERKOTAAN DI INDONESIA Purwanta, Wahyu
Jurnal Teknologi Lingkungan Vol. 10 No. 1 (2009)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (154.297 KB) | DOI: 10.29122/jtl.v10i1.1497

Abstract

Indonesia produced 48.8 Mt/year of Municipal Solid Waste (MSW) with populationnumber of 218.8 million and rate of waste generation 0.61 kg/cap/day. Most ofMSW (40%) are transported to the Solid Waste Disposal Site (TPA) in urban area.The landfill site which is unmanaged will become a source of the GHGs emission,mainly the methane emission. Based on the Indonesian population, using FODIPCC Tier-2 method, CH4 generated from MSW sector (landfill only) in 2006 is109.96 Gg CH4 and will be increased up to 259 Gg in 2010, 504 Gg in 2015 and1,065 Gg in 2025. The increase number of this CH4 emission is caused by theincrease of population number that will increase the waste production and alsoincrease the volume waste that is collected in the disposal area. The future scenarioby referring to the national strategic plan which is developed by the Public WorkDepartment is that the waste should be reduced from the source, so the totalvolume will be reduced by 20% in 2010. In 2015, refers to the MDGs target, 80% ofthe MSW in urban area and 50% of the MSW in rural area should be transported tothe final disposal site. As stated in Solid Waste Management Act No 18/2008 andin accordance with the raw water protection, improvement of landfill quality fromopen dumping to sanitary landfill or controlled landfill and development of regionallandfill are the priority programs with national financial support as an initial investment.
ANALISIS RESIKO DAN PELUANG DALAM PENYUSUNAN RENCANA ADAPTASI PERUBAHAN IKLIM Purwanta, Wahyu
Jurnal Teknologi Lingkungan Vol. 15 No. 2 (2014)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8730.046 KB) | DOI: 10.29122/jtl.v15i2.1602

Abstract

Dalam menghadapi perubahan iklim, terdapat dua langkah yang umum dilakukan yakni mitigasi dan adaptasi. Adaptasi adalah langkah penyesuaian diri atau peningkatan resiliensi sebagai akibat dari dampak yang timbul. Terdapat beberapa komponen iklim yang diidentifikasi mengalami perubahan yakni kenaikan suhu permukaan daratan dan laut, intensitas curah hujan, tinggi muka laut dan peningkatan kejadian iklim ekstrim. Perubahan iklim berdampak pada berbagai sektor pembangunan termasuk sector transportasi udara. Studi ini memaparkan langkah penyusunan rencana aksi adaptasi perubahan iklim di sector transportasi udara melalui analisis resiko dan peluang.  Dari hasil studi disusun rencana aksi adaptasi dampak perubahan iklim pada sektor transportasi udara meliputi; peningkatan standar pemeliharaan sarana dan prasarana, pembangunan sistem peringatan dini kondisi cuaca, pemanfaatan energi ramah lingkungan, peningkatan kemampuan pilot sampai penyediaan sistem air bersih berbasis daur ulang Kata kunci:Analisis Resiko, Adaptasi, Perubahan Iklim, Transportasi udara 
Profil Emisi Gas Buang Dari Pesawat Udara di Sejumlah Bandara di Indonesia Purwanta, Wahyu
Jurnal Teknologi Lingkungan Vol. 16 No. 1 (2015)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7117.536 KB) | DOI: 10.29122/jtl.v16i1.1607

Abstract

Polutan yang dihasilkan dari mesin-mesin pesawat udara (exhaust gas polution) perlu diperhatikan dampak buruknya terhadap lingkungan, meskipun hanya menyumbang sekitar 3% dari total emisi udara dunia tapi dengan banyaknya pesawat udara komersial yang beroperasi dari hari kehari semakin meningkat, maka angka persentase emisi tersebut diprediksi akan meningkat. Secara global, pesawat udara menghasilkan 2% total produksi emisi karbon dioksida (CO2) per tahun, atau sebanyak 13 % dari emisi CO2 yang dihasilkan dari seluruh kendaraan dan diprediksi naik menjadi 3 % sampai tahun 2050.Studi ini bertujuan mengetahui jumlah emisi gas rumah kaca (GHG) dari sektor perhubungan udara dan prediksi pada masa mendatang. Dari hasil perhitungan dalam studi ini diperoleh total emisi GRK (CO2 dan CH4) sebesar 8.171,04 kTon CO2 eq terdiri atas emisi saat LTO 1.203,5 kTon CO2 eq (15 %) dan saat cruise sebesar 6.967,5 kTon CO2 eq (85 %) basis data 2012. Emisi GRK didominasi oleh gas CO2 (99,7%) sedangkan hidrokarbon kurang dari 0,3%. Emisi GRK pesawat udara pada saat tahap cruise sangat dominan mencapai 85% dari emisi total.Key words : Emisi, Gas Buang, Pesawat Udara
PENGARUH APLIKASI MIKROBA PROBIOTIK PADA KUALITAS KIMIAWI PERAIRAN TAMBAK UDANG purwanta, wahyu; Firdayati, Mayrina
Jurnal Teknologi Lingkungan Vol. 3 No. 1 (2002): JURNAL TEKNIK LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.665 KB) | DOI: 10.29122/jtl.v3i1.237

Abstract

Kegagalan utama produksi udang dari budidaya tambak umumnya disebabkan oleh serangan penyakit dan kualitas air yang buruk akibat pencemaran. Suatu tindakan penyiapan lahan yang benar serta upaya menjaga mutu air pasokan akan sangat membantu dalam meningkatkan kembali produktivitas tambak. Suatu ujicoba aplikasi mikroba probiotik hasil isolasi dari wilayah pantura Jawa dikombinasi dengan sistem aerasi serta biofiltrasi dalan air tandon dilakukan pada tambak udang di Desa Limbangan, Kabupaten Pemalang, Jawa Tengah. Hasil yang didapat memperlihatkan terjadinya penurunan paramater-parameter kunci seperti Nitrat (NO3), Nitrit (NO2), Sulfat (SO4), Sulfida (H2S), Amonia (NH3) dan Phospat (PO4) secara signifikan. Selain itu pH dan DO air juga cenderung stabil.
Co-Authors Joko Prayitno Susanto Mayrina Firdayati Robertus Haryoto Indriatmoko Suryanto, Feddy