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INDONESIA
Jurnal Hidrosfir Indonesia
Published by Badan Pengkajian dan Penerapan Teknologi
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Articles 5 Documents
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Search results for , issue " Vol 5, No 3 (2010)" : 5 Documents clear
BAKTERI PENGHASIL BIOSURFAKTAN YANG DIISOLASI DARI PULAU LAKI KEPULAUAN SERIBU Riffiani, Rini
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Biosurfactants are the surface-active molecules synthesized by microorganisms. The microbial surfactant were interesting because of the biodegradable and have many application in industry. With the advantage of environmental compatibility, the demand for biosurfactants has beensteadily increasing and may eventually replace their chemically synthesized counterparts. Marine biosurfactants produced by some marine microorganisms have been paid more attention particularly for the bioremediation of the sea polluted by crude oil. The aim of this research isto screening microorganisms that produce biosurfactant from Pulau Laki, Kepulauan Seribu, Jakarta. The isolate which produce biosurfactant showed by clear ring zone on ONR7a crude oil medium. Three isolates were identified their characteristics based on the composition of nitrogenbase. Molecular identification based on 16S rRNA gene sequences indicated that bacteria had the highest similarity with Marinobacter satoriniensis strain NKSGI, Paracoccus sp and Pseudomonas sp.
UPAYA PENINGKATAN EFISIENSI PEMANFAATAN AIR EMBUNG DI NTT: STUDI KASUS EMBUNG OEMASI - KUPANG Widiyono, Wahyu
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Effort to increase water used efficiency is one of the important aspect in the integrated embung management. The others are watershed and water storage management. Water used efficiency related, the first problem is how to deliver water from the embung storage to the water utilization area (village); and the second problem is how to use water for people consumption, cattle feeding and plant irrigation efficiently. Since theOemasi embung was built in 1991/1992 untill in 2010 some aspects were developed related to the increasing of people population in this area, i.e. developing of water tanks for people water consumption, cattle and irrigation; application of water used efficiency for cultivation of horticulture plants by using polybag potting system; and pipe network rehabilitation programme. The Oemasi embung problem and solution during the 20years of embung maintainance are the very valuable experience that can be used as a case study to manage 333 embungs that were built in the East Nusa Tenggara Province.
STUDY OF RAINFALL AND RIVER DEBIT INTERACTION USING RATIONAL METHOD TO DETERMINE INTRUSION OF SEA WATER IN THE JAKARTA BAY AREA Lubis, Atika; Permadhi, Yan F; Haryanto, Eko
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

The Ciliwung River that flow through Jakarta Province is one of important factor for the city. The deficiently water management in Jakarta caused water supply crisis within the area. The unsufficient water supply for Jakarta is causing groundwater pumping by the local people to comply their needs of water. Thus generated saline water intrusion from the Ciliwung’s downstream to the upstream through to the people’s settelement.The objective of this research is to find how far the sea water intrusion at Jakarta Bay by analyzing the interaction between rainfall with the Ciliwung River’s debit. Jakarta’s land cover is dominated by watertight materials such as concrete and asphalt induced runoff greater than infiltration. The current land cover caused the groundwater contaminated by sea water intrusion. The hypothesis is based on the groundwater calculation for Ciliwung’s River Basin. It showed the average ofbaseflow for the the Ciliwung’s River Basin range between 550 – 680 mm per year. The baseflow range shows that water absorbed by the ground is lesser than the rainfall at Ciliwung’s RiverBasin that ranged between 2000 – 2500 mm per year.Afterwards, using ten years of climate data and debit data from Katulampa Station (the Upstream of Sungai Ciliwung) and also using data from the Angke Estuary and the Ancol Estuary (Lower Ciliwung River) acquired the maximum sea water intrusion in Ciliwung River on May 6, 2005. The intrusion reaches is ranged between 14 – 20 kms measured from the downstream of Angke Estuary. While the intrusion at the Ancol Estuary ranged from 18 – 22 kms.
PERAIRAN SEBAGAI LAHAN BANTU DALAM PENGEMBANGAN PERTANIAN DI LAHAN RAWA LEBAK Djamhari, Sudaryanto
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Bog lebak farm, specially shallow lebak have potency to be developed to to become agriculture farm like rice field farm which is have irrigating. Farm lebak bog characteristic at the rains suffused by water and at dry season happened dryness, pond irrigate in shallow lebak bog do not go alongway so that in have paddy crop conducting to have risk lacking of water, good at a period of/ to growth or at a period of/to admission filling of fruit as a result fruit become small even do not contain, so that unattainable optimum productivity. Taken by step is to provide seed ready to plant before water pond dwindle. Seed conducted in territorial water with ploating system, by using materials, for example: bamboo, gegas leaf, and green algae from territorial water. Pursuant to result of Laboratory Majors Land, Faculty OfAgriculture, IPB, that nutricie element content can be used at phase growth of seed. Conducted of seed with system float in territorial water hence problem of is ready of seed at lebak bog farm which still suffused by water can overcome and crop will be able to be conducted at the time of water not less than 20 cm.
ANALISIS KESEDIAAN MASYARAKAT MENERIMA PEMBAYARAN JASA LINGKUNGAN DALAM PENGELOLAAN AIR MINUM DI DAS CISADANE HULU Sutopo, M.Fauzi
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Ecocentrisme paradigm in development are intended to ensure the sustainability of water resources in the future for future generations. The research methodology was conducted with the model approach the public's willingness to accept (receive) payment for environmental services (YWTA). The results in Willingness to Accept Model in Drinking Water Management in the Upstream Watershed Cisadane illustrates that the existence of community support during the response level of society's willingness to accept or receive payment for environmental services (YWTA) because it will affect the increased revenue (sig. 0037). Variable in income (YWTA) significant at 95% confidence level. Policy implications of this research that the community (upstream) is willingness to accept (WTA) for environmental services with averaging Rp 1.589,29 per m3 as payment or reward for environmental services to society (upstream), so the Government (Local)PES has a potential revenue to fund conservation of Rp 110,46 billion per years, but in current conditions the government only accepts Rp20.57 billion per year, so that only reached 18,62%.

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