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INDONESIA
Jurnal Rekayasa Lingkungan
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 589 Documents
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KONSERVASI LAHAN DAN AIR DI HULU DAERAH ALIRAN SUNGAI (DAS) CITARUM MELALUI PENGEMBANGAN BUDIDAYA PERTANIAN SISTEM AGROFORESTRI Mulyono, Daru
Jurnal Rekayasa Lingkungan Vol 6, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

The area of Citarum Watershed is cover six regencies: Bandung, Sumedang, Cianjur, Purwakarta, Bogor, and Karawang, West Java. The role and function of upper Citarum Watershed tend to declining, where total of deforestation area reach to a high of 560,095 ha or about 78 % from the total area and part of them already become critical area reach to a high of 143.798 ha. The Debit Ratio of Citarum River or Qmax/Qmin reach to a high of 1,667, it is indicate that Citarum Watershed become very critical condition and need appropriate management especially in the upper watershed. One altervative of the watershed management is application of agricultural forestry system where it is done by integrated development among agriculture, forestry, and animal husbandry. The successful application of agricultural forestry system will lead to conserve land and water where it will support flood control, agricultural irrigation, fisheries development, electric generation, industrial development, etc.Keywords: agricultural forestry, land conservation, watershed
FIXED MONITORING SYSTEM FOR MONITORING GAS GENERATED IN WASTE LANDFILL Wahjono, Heru Dwi
Jurnal Rekayasa Lingkungan Vol 7, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Gas produced by landfill is bio-gas that has a high concentration of methane that could cause global warming if not controlled. Good management of a landfill in controling the production of methane gas, can be used as an alternative sources of energy to produce electrical energy. Monitoring of methane gas production needs to be done continuously for the energy conversion process can take place perfectly without polluting the environment. Fixed monitoring system described in this paper is the result of design and development including hardware and software of monitoring technology for methane gas to facilitate research in doing observations of a landfill performance.keywords : final disposal, landfill gas, methane, landfill performance, fixed landfill gas monitoring system
STUDI PENENTUAN KOMPOSISI OPTIMUM CAMPURAN BAHAN BAKAR BIODIESEL–PETRODIESEL Wirawan dkk, Soni S.
Jurnal Rekayasa Lingkungan Vol 4, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Biodiesel is a viable substitute for petroleum-based diesel fuel. Its advantages are improved lubricity, higher cetane number and cleaner emission. Biodiesel and its blends with petroleum-based diesel fuel can be used in diesel engines without any signifi cant modifi cations to the engines. Data from the numerous research reports and test programs showed that as the percent of biodiesel in blends increases, emission of hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM) all decrease, but the amount of oxides of nitrogen (NOx) and fuel consumption is tend to increase. The most signifi cant hurdle for broader commercialization of biodiesel is its cost. In current fuel price policy in Indonesia (especially fuel for transportation), the higher percent of biodiesel in blend will increase the price of blends fuel. The objective of this study is to assess the optimum blends of biodiesel with petroleum-based diesel fuel from the technically and economically consideration. The study result recommends that 20% biodiesel blend with 80% petroleum-based diesel fuel (B20) is the optimum blend for unmodifi ed diesel engine uses.Keywords: biodiesel, emission, optimum, blend
PROBLEM IDENTIFICATION OF DOMESTIC WWTP OFFICE BUILDING AND ALTERNATIVE TO OVERCOME THEM (CASE STUDY : PT. USAHA GEDUNG BDN, JAKARTA) Rahardjo, Petrus Nugro; Widayat, Wahyu
Jurnal Rekayasa Lingkungan Vol 9, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

In general, the main problem of domestic wastewater treatment plant (WWTP) for office buildings in Jakarta is the incompatibility between the surface load of wastewater and the capacity of WWTP. At the beginning a capacity of WWTP is already predetermined and corresponding to the rate of wastewater generated. But because of the demands of the means for the benefit of various business, so that the capacities of the office building should be developed. This case occurred on PT. Usaha Gedung BDN. Four environmental parameters, namely TSS, Ammonia, Grease & Oil and COD, produced from the WWTP still exceeded the allowable quality standards. Therefore PT. Usaha Gedung BDN immediately needs WWTP capacity development plan which is adequate. Various types of technology have been widely available and ready to be used to overcome the problems of the WWTP. But on this occasion it is advisable to develop the existing WWTP facilities by adding a new WWTP unit. The first WWTP is functioned as the preliminary processing unit and the new WWTP will become an advanced processing unit. The use of a combination of anaerobic-aerobic biofilter will be relied upon to reduce pollutants that can qualify water quality standards in accordance with applicable regulations.keywords : problem identification, domestic wwtp, advanced processing
ANALISIS RESIKO BENCANA GEMPA BUMI UNTUK PENATAAN RUANG KABUPATEN BURU SELATAN Prasetya, Hermawan
Jurnal Rekayasa Lingkungan Vol 5, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Law Number 26/2007 about Spatial Planning has been dedicating a spatial plan sound disaster mitigation. South Buru District, which as splitting district from Buru District, currently preparing spatial plan. This paper intends to conduct a risk analysis of the earthquake disaster that will be used to evaluate the concept of spatial plan of South Buru District. Risk analysis concist of set of analysis such as prone, vulnerability and risk analysis to earthquake disasters. Based on these analysis, indicates the level of risk to earth quake in the majority of South Buru area is low. Comparison between the risk map with the concept of spatial plan indicates that the placement locations of major activities in spatial concepts have been in accordance with the risk of earthquake.Keyword : earthquake, prone to disaster, vulnerability, risk analysis, spatial planning
FRONT COVER Cover, Front
Jurnal Rekayasa Lingkungan Vol 10, No 1 (2017): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

PROSPEK PENGEMBANGAN KACANG TANAH UNTUK MENUNJANG KETAHANAN PANGAN: (STUDI KASUS UJI VARIETAS DI DESA MAKAMENGGIT KABUPATEN SUMBA TIMUR – NTT) Widiyono, Wahyu
Jurnal Rekayasa Lingkungan Vol 6, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

To understand the prospect of groundnut development (Arachis hypogaea) for supporting food security in semi arid area, survey and experiment of groundnut varieties were undertaken in Makamenggit Village, East Sumba District, the East Nusa Tenggara Province. Aim of research was to understand natural resources (soil, climate and water) and production potency based on cased study of 6 (six) varieties of groundnut which was cultivated under manure treatment. The six groundnut varieties, i.e. Tupai, Komodo, Zebra, Gajah, Bogor variety and Makamenggit local variety were cultivated in vertisol soil type, organic manure of buffalo feces, irrigation manually from water river in dry season. Parameters of plant height, leave number, and leave cover each individual plant were observed every week, since 5 weeks until 12 weeks after planting. Survey indicated that agro-climate and hydrology of East Sumba was very potential to support groundnut development not only in the rainy season short period (3-4 months), but also in the dry season by utilization of the existence of waterresources (some river and ‘embung-embung’). Result of research showed that six varieties of groundnut had good vegetative growth. The Makamenggit local variety which showed vegetative growth so good performance was potential to promote as a national superior seed. It was obviously that organic manure could increase groundnut vegetative growth (and also reproductive yield) at the vertisol soil type. To develop groundnut cultivation in East Sumba area the utilization of organic manure, cultivation in dry season by irrigation of limited water and seed diversity need to be socialized continuously to the farmers.Keywords: natural resources, prospect, groundnut, food security, east Sumba.
ANALYSIS OF SUSTAINABILITYPEATLAND IN AGROECOLOGY OIL PALM PLANTATION dkk, Sowondo
Jurnal Rekayasa Lingkungan Vol 7, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

This research was based on the damages of peatlands. Peatland was potential to be developed as plantation. The objective of the research was to examine sustainability index of peatlands management on agroecology palm oil plantations at Bengkalis-Riau. The point location was determinated with purposif sampling as palm oil activited and which were peatland physiography at marine and brackish peat. The data collected using desk study and field survey. The sustainable measurements were conducted on the dimensions of ecological, economic, socio-culture, infrastructure and technology, law and institutional. Multi Dimensional Scaling (MDS) it’s called Rap-Insus-Landmag (Rapid Appraisal–Indeks Sustainability of Land Management) was used evaluatedsustainability of peatland management on agroecology palm oil plantation. The results of this study indicated that marine peat and brakish peat sustainability for five dimension (ecology, economic, socio-culture, infrastructure and technology, law and institutional) on the existing condition i.e. ecological dimension less sustainable (49,14 % and 46,60 %), economic moderate sustainable (69,30 % and 64,7 %), socio-culture moderate sustainable (52,32 % and 54,47 %), infrastructure and technology moderate and less sustainable (51,15 % and 49,64), law and institutional moderate sustainable (50,33 %and 56,99 %). Therefore, sustainability peatlands of management on groecology oil palm plantations have category less-to-moderate at the Bengkalis-Riau.keywords : peatland, sustainable, palm oil plantation
STRATEGI MEMPERPANJANG UMUR TEMPAT PENGOLAHAN AKHIR (TPA) SAMPAH DI INDONESIA Mulyanto, Adi
Jurnal Rekayasa Lingkungan Vol 4, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

The existence of Municipal Solid Waste (MSW) is not received by the community. The problem is MSWalways be generated by the activities of human being. All of the cities, especially in Java Island, facediffi culties to look for an area for dumping the MSW. The most effective strategy is the prolongation oflandfi ll site. The method applied is to build the small facility of MSW handling in small area such as RWs(administrative unit at the next-to-lowest level in city) or in the villages. The main product will be compostand other recyclable materials such as plastics, metals, and so forth. Therefore, maximum about 10% to20% of MSW will be discard in the landfi ll site. To realize the facility of MSW handling in the area, it needsseveral equipment to help for producing the good compost.Key words: MSW, composting process.
EFFECT OF HARVESTING MICROALGAE (Chlorella sp.) CONTINUOUSLY TO ITS GROWTH IN THE FOTOBIOREAKTOR Ma'rufatin, Anies
Jurnal Rekayasa Lingkungan Vol 9, No 1 (2016): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Currently, the photobioreactor (FBR) has been developed and utilized to investigate (knowing in detail) the metabolic processes of cells of microorganisms, such as microalgae. FBR technology MTAP (Multi Tubular Photobioreactor Airlift) is a continuous system that is closed and controled for the growth. Then, this technology conducted continuous harvesting trial. Continuous harvesting system is cultivated by reducing of microalgae solution volume then is added by new solution of FBR MTAP system in operation. The number of reactors in the FBR MTAP are two reactors were used that Reactor 1 and Reactor 2. Microalgae was grown in 21 DAP (Days After Planting) and then harvested by reducing the volume 16.7% in each reactor in DAP 12. Based on the results of cells density, harvesting in the first phase, the optimum growth occurred at DAP 7 for Reactor 1 and Reactor 2, while harvesting their optimum growth phase II DAP 16 for Reactor 1 and DAP 19 for Reactor 2. Comparison of cell density on both reactors FBR MTAP conducted trial period of harvesting microalgae Chlorella sp. freshwater DAP 12 and DAP 21 are optimal to be done continuously without dewatering and sterilization performed the FBR system MTAP.Key words: photobioreactor, continuous harvesting, microalgae growth, cell density, Chlorella sp.

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