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PENENTUAN KONSENTRASI KHLOROFIL-α SEBAGAI INDIKATOR KUALITAS PERAIRAN WADUK SAGULING Komarawidjaja, Wage
Jurnal Hidrosfir Indonesia Vol 3, No 3 (2008)
Publisher : Jurnal Hidrosfir Indonesia

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Saguling reservoir is one of reservoir located in West Java Province. This reservoir primarily was planned for single purpose to generate the electricity. Water quality in this reservoir is depends on the water quality of Citarum River which have face significant change because of the increased of land use along Citarum River basin. Parameter that tends to increased as well as measured at Saguling reservoir in this study is pH, turbidity and Chlorophyll-α. These results are higher than the permissible limit (PP 82/2001). Its mean that Saguling reservoir water quality is worst, and based on chlorophyll-α contained > 10 μg/L is called as eutrophic waters

PENGARUH PERBEDAAN DOSIS OKSIGEN TERLARUT (DO) PADA DEGRADASI AMONIUM KOLAM KAJIAN BUDIDAYA UDANG Komarawidjaja, Wage
Jurnal Hidrosfir Indonesia Vol 1, No 1 (2006)
Publisher : Jurnal Hidrosfir Indonesia

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The objective of the study is to determine the effectiveness of bacterial application and various continuous dissolved oxygen (DO) treatment for nitrogen (ammonia, nitrite and nitrate) degradation in shrimp culture. The DO treatment was set as 4.5 mg/L for treatment-I, 5.5 mg/L for treatment-II and 6.5 mg/L for treatment-III. The batch oxidation was conducted for a period of 20 days. The temperature, pH, salinitas, DO, ammonia, nitrite and nitrate were determined.Based on some previous research papers. NH3 becomes toxic to shrimp if the concentration is higher than 0.54mg/Lr. NH3 measurement on this experiment was about 0.01 mg/L up to 2.5 mg/L, but frequently was found lower than 0.54 mg/L in the pond under treatment-III (6.5 mg/L DO).The result also indicates that nitrification process in the experiment pond was not only depend on DO level and abundance of nitrifier, but also was influenced by a possibility of the occurrence of organic compound that inhibit nitrification.

KAJIAN PERTUMBUHAN CHLORELLA SP. PADA LIMBAH CAIR INDUSTRI SUSU Garno, Yudhi Soetrisno; komarawidjaja, Wage; Susanto, Joko Prayitno
Jurnal Teknologi Lingkungan Vol. 15 No. 1 (2014)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Chlorella sp dikenal sebagai mikroalga yang mampu hidup di berbagai badan air, termasuk badan airpenampung limbah cair. Kajian ini dilakukan dengan tujuan untuk mengetahui kemampuan adaptasiChlorella sp pada limbah cair industri susu, yang jika terurai menghasilkan nutrien untuk pertumbuhanChlorella sp. Kajian dilakukan dengan memelihara Chlorella sp pada media F/2 Guallard, limbah cairindustri susu (LS) dan limbah cair industri susu yang diperkaya dengan nitrogen setara nitrogendalam F/2 (LSP). Kajian ini mengungkapkan bahwa Chlorella sp tumbuh paling baik di media limbahsusu yang diperkaya dengan nitrogen setara F/2. Media tersebut (LSP) menghasilkan kepadatan dankonsentrasi Chl-a, serta kandungan Chl-a per individu Chlorella sp yang lebih tinggi daripada mediaF/2 dan LS. Mengingat limbah susu yang tidak diolah dengan baik dapat menimbulkan pencemaranbagi lingkungan perairan sekitar industri itu berada, maka perlu dipertimbangkan kemungkinanpemanfaatan Chlorella sp pada pengolahan limbah industri susu di tingkat lanjutan, sebelum limbahdibuang ke badan air.

KAJIAN PEMANFAATAN POTENSI SUMBERDAYA AIR DI KABUPATEN PANDEGLANG Tjahjono, Hendra; Wibowo, Kusno; Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 13 No. 3 (2012)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Air, baik air tanah maupun air permukaan merupakan sumber kehidupan yang tidak dapat tergantikan oleh apa pun dan tanpa air, manusia, hewan dan tanaman tidak akan dapat hidup terutama sebagai air minum. Tetapi dalam pemanfaatannya, masih banyak yang tidak sesuai dengan peruntukannya ataupun mempergunakan sampai diluar batas, sehingga disatu sisi banyak yang terbuang dengan sia-sia tetapi dilain sisi banyak yang membutuhkan. Penggunaan air selama dasa warsa terakhir ini meningkat disebabkan oleh beberapa faktor, antara lain oleh kegiatan manusia yang semakin bervariasi, pertambahan jumlah penduduk yang meningkat, maka jumlah air untuk kebutuhan manusia juga meningkat dan hal ini berpengaruh terhadap kualitas air. Selain itu juga berpengaruh terhadap keterbatasan air dan kondisi alam. Untuk itu diperlukan suatu system pengelolaan air yang sangat baik dengan memperhatikan akan kondisi alam dan ketersediaan akan air sehingga tercapai suatu pengelolaan yang sesuai dengan tata kelola air.Ã‚Â Kata kunci : air, pengelolaan air, lingkunganÃ‚Â AbstractWater, both ground water and surface water is the source of life that can not be replaced by anything and without water, people, animals and plants will not be able to live.But in its utilization, there are still many who are not as intended or use to beyond the limit, so that on one hand many are wasted in vain, but on the other side of the many in need. Use of water during the last decade has increased due to several factors, among others,by human activities increasingly varied, the number of population increases, the amount of water for human needs has also increased and this contributes to water quality. It also affects the limitations of water and natural conditions. It required a water management system is very good with attention to natural condition sand the availability of water in order to reach an appropriate management of the water governance and the availability of clean wateris needed. Ã‚Â Keywords: water, water management, environment

KARAKTERISTIK DAN PERTUMBUHAN KONSORSIUM MIKROBA LOKAL DALAM MEDIA MENGANDUNG MINYAK BUMI Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 10 No. 1 (2009)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Laboratory microcosm observation were conducted to study the effect of mediaculture containing oil spill in microbial growth ability . Laboratory microcosms wasinoculated with oil microbial consortia isolated from oil spill sample in Cepu oil field.Based on the colony characteristic differentiation, 5 microbial types identified fromthe sample. At the end of enrichment period and acclimatization on the BH mediacontaining 5% Cepu crude oil, all isolates as microbial consortia put into growthexperiment media.The experiment proved that microbes could be able utilizing oil as carbon sourcefor their cell multiplication. The results showed the more the turbidity concentrationincrease, the more the microbial population rise. These studies indicates thatreducing oil spill utilizing in situ bioremediation technologies can be realized

POTENSI MIKROBA PENITRIFIKASI KAWASAN PERTAMBAKAN UDANG TANJUNG PASIR, TANGERANG Komarawidjaja, Wage; Ambarsari, Hanies
Jurnal Teknologi Lingkungan Vol. 2 No. 3 (2001): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

High concentration of ammonia in shrimps pond sediment due to the accumulation of feed excessive will become negative impact to the shrimp culture. Therefore, increasing the indigenous microbial abilities in minimizing toxicity effect of ammonia through biotransformation of ammonia into nitrite and nitrate is very important for shrimp growth and health.Isolation and identification of nitrifying microbes has been done. The number of microbes isolated form shrimps pond are six namely 2p, 2k, 3p, 1p, 3k, and 2. The number of isolated microbes in aquaculturing pond (T-bd) is five and in post harvest pond (T-pp) is three.In T-bd samples, autotroph nitrifying microbes are 2(k), 2(p) and 3(p), but 1(p) and 3(k) as heterotroph nitrifying microbes. And in T-pp samples, autotroph nitrifying microbe is 3(p), except 2 and 3(k) as heterotroph nitrifying microbes. The rank of effectivness In nitrifying activity is 2k, 3p and 2p respectively.

PELUANG PEMANFAATAN RUMPUT LAUT SEBAGAI AGEN BIOFILTRASI PADA EKOSISTEM PERAIRAN PAYAU YANG TERCEMAR Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 4 No. 3 (2003): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Some observation result said that the worst of enviromental uality happened is primarily caused by mislead in the aim of develoment nature resources that only concern to economic growth. Therefore, the develoment of brakisth water ecosystem as an economic growth region should be relatedto the goal of enviromental waters uality management. To enhance this goal, the people utilizing brakish water ecosystem as aquaculture site may reduce organic pollution that is producedby their activities. Integrationof Gracilaria sp as a biofilter agent in aquaculture pond or in the wastewater treatment system is an alterantivetechnology for waters quality recovery enhancement.The initial success of this method in some countries has been reported. Therefore, if the biofiltration process in reducing organic pollution run properly, waters pollution in certain brakish ecosystemmaybe reduced.

KARAKTERISTIK DAN KERAGAMAN MIKROBA UNIT PENGOLAH LIMBAH CAIR TEKSTIL Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 8 No. 2 (2007): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

One of major pollutants in textile wastewaters is organic substance that could be degraded and utilized by microbe as nutrient and energy source in activated sludge compartment at textile waste water treatment unit. Therefore, microbe is the concern in this observation. Based on the characterization result, such as colony type, Gram stain and microbial shape, there are 13 type of microbegrow in activated sludge. From 13 microbial type, 5 isolates is possibly as Bacillus spp., 4 isolates is to be Flavobacterium spp. and the rest as Pseudomonadaceae.

RUMPUT LAUT GRACILARIA SP. SEBAGAI FITOREMEDIAN BAHAN ORGANIK PERAIRAN TAMBAK BUDIDAYA Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 6 No. 2 (2005): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Phytoremediation is the utilization of green plants to remove pollutants from the environment. A central component of this technology is the use of plants as living technologies that provide services in addressing environmental issues. Therefore, based on the hydrological understanding, phytoremediation technology can be used to manage nutrient and water dynamics; It can lead significant improvement in water quality as well as remediation of degraded ecosystem. Laboratory experiment result indicated, seagrass called Gracilaria sp. have the ability in reducing organic substance as total Nitrogen (N-Total) from 1,2 mg / L into 0.4 mg / L in less than 10 hour. The integration of seagrass into pond ecosystem as organic substances phytoremedian of exceeding fish-feed accumulation expected to become an alternative technology for water quality recovery enhancement.

KAJIAN ADAPTASI KIJING PILSBRYOCONCHA EXILIS SEBAGAI LANGKAH AWAL PEMANFAATANNYA DALAM BIOFILTRASI PENCEMAR ORGANIK DI PERAIRAN WADUK Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 7 No. 2 (2006): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Pilsbryoconcha exilis is freshwater mussel that derive its feed throughfiltering water. The mussels could filter such as phytoplankton andsuspended material to get their feed. Its ability may be used in waterremediation which is polluted by organic contaminant, such as at Ciratareservoir in West JavaTo undesrtand that freshwater mussels have abilityto adapt in Cirata reservoir, a group of mussels kept in certain watercolumn at some station observation. Then mussels growth rate wasmeasured. Research result indicated that freshwater mussel could beadapted and grown in different water column as well as in their habitat(bottom sediment with muddy substrate). The mussels planted in Ciratareservoir have relation length and weight pattern which categorize asnegative allo-metric (increasing of length is more dominant than weight).Observation result of mussels grow at Jangari Station was remarked bycoefficient of growth (k=0.47) and infinity of length ( 8 =9.41); at Pasir Empul k=0.64 and L8 =9.62; at Jati Nenggang k=0.47 and L8 =9.41; also atmussels stock cages k=0.65 dan L8 =9.62. The result of this study concluded that mussels could be grown in Cirata reservoir of West Java.

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