Wage Komarawidjaja
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DAMPAK BUDIDAYA PERTANIAN INTENSIF TERHADAP KUALITAS AIR PERMUKAAN DESA KANIGORO KECAMATAN NGABLAK KABUPATEN MAGELANG Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 12 No. 1 (2011)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (436.872 KB) | DOI: 10.29122/jtl.v12i1.1264

Abstract

Kanigoro at Ngablak Sub-District in Magelang is one of the Villages which is topographically lower than the adjacent village in the same sub-district. The main activity of village inhabitant is farmer in intensive agriculture that is indicated by a lot of fertilizer and pesticide utilization. Therefore, the exceeding dosage of fertilizer and pesticide in plant cultivation could become an anxious environmental problem due to the high concentration of them in springs water that they called as Tuk and river water more than the quality standard of National regulation. Based on Data analysis, it can be concluded that laboratory analysis result of water quality in the village Kanigoro, generally still meet the quality standard. This is showed by the concentration of heavy metals (As, Cu, Cd, Hg, Zn and Fe) and pesticides (Aldrin, BHC, Chlordane, DDT, Dieldrin, Endrin, Heptachlor,Heptachlo epoxide, Lindane, Methoxychlor and Toxaphene), except for some points sampling contain heavy metals plumbum (Pb) exceeded water quality standard of the Minister of Health (Depkes) and Government Regulation Class I (raw water) of PP 82/2001. While the density of microbial total coliform and E. coli detected abundant compare to the water quality standard of the Minister of Health, particularly for the use of water as raw water or clean water. However, it is possible to utilize water directly for agriculture and fish farming activities and the use for drinking water after cooked first
TINGKAT FILTRASI RUMPUT LAUT (GRACILARIA SP) TERHADAP KANDUNGAN ORTOFOSFAT (P2O5) Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 9 No. 2 (2008): 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 | DOI: 10.29122/jtl.v9i2.459

Abstract

The Concern of this study is to understand Gracilaria sp. function in biofiltration process as a way in removing exceeding nutrient.Laboratory analysis indicated that Gracilaria sp has the ability to reduce organic substance as orthophosphate in see water up to range 0.0082 -00.0149 ppm/days. Application of Gracilaria in waste water filtrattion is expected to be an alternative approach in shrimp pond waste water treatment.
KAJIAN PEMANFAATAN LIMBAH PADAT INDUSTRI PENGOLAHAN RUMPUT LAUT SEBAGAI MEDIA KULTUR MIKROALGA CHLORELLA SP. Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 12 No. 3 (2011)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (936.97 KB) | DOI: 10.29122/jtl.v12i3.1232

Abstract

Penelitian ini bertujuan mencari alternatif limbah organik sebaga bahan baku pembuatan media tumbuh mikroalga Chlorella sp, dimana bahannya melimpah, mudah diperolehdengan harga lebih kompetitif. Beberapa literatur menyebutkan bahwa rumput laut banyak tersebar di perairan laut Nusantara dan memiliki kandungan nutrien (makro dan mikro) yang tinggi, sehingga limbahnya pun diperkirakan masih mengandung unsureunsur yang dibutuhkan untuk pertumbuhan mikroalga. Hasil analisa nutrien pada limbah padat rumput laut, menunjukan kandungan mikro nutrien yang tinggi, kecuali unsurnitrogen (N) dan posfor (P) yang tersedia relatif rendah, namun masih layak digunakan sebagai media mikroalga. Hasil uji pemanfaatan limbah industri pengolahan limbahrumput laut (LR) dan limbah rumput laut yang sudah diperkaya dengan unsur N (LRP) dibandingkan dengan media F/2 Guillard (FG) menunjukan bahwa limbah rumput laut LRP dapat dimanfaatkan sebagai media kultur mikroalga yang ditunjukan oleh tingkat kepadatan dan laju pertumbuhan mikroalga lebih baik dibandingkan dengan media FG maupun LR (LRP>FG>LR).Dari hasil pembahasan, dapat disimpulkan bahwa media kultur asal limbah proses pengolahan rumput laut LRP membuktikan bahwa limbahorganic dari proses pengolahan rumput laut dapat digunakan sebagai bahan baku pembuatan mediam tumbuh mikroalga, khususnya Chlorella sp.
Paparan Limbah Cair Industri Mengandung Logam Berat pada Lahan Sawah di Desa Jelegong, Kecamatan Rancaekek, Kabupaten Bandung Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 18 No. 2 (2017)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.267 KB) | DOI: 10.29122/jtl.v18i2.2047

Abstract

Lahan persawahan di Jelegong, Kecamatan Rancaekek merupakan salah satu wilayah yang terkena dampak limbah cair kawasan Industri tekstil. Oleh karena itu, penelitian ini dilakukan di desa Jelegong, yang bertujuan mengkaji paparan kandungan logam berat limbah  industri tekstil di lahan persawahan.Hasil analisa contoh tanah dari lahan persawahan tersebut, menunjukkan beberapa logam berat terdeteksi dalam konsentrasi yang cukup tinggi.  Kandungan logam berat yang tinggi adalah Cr (0,06-174,7 mg/l), As (0,28-4,0 mg/l) dan Hg (25,9 – 92,2 mg/l), sementara konsentrasi logam berat yang lain, Pb(0,05 – 11,7 mg/l), Cd (0,02 – 0,17 mg/l).  Kandungan Cr contoh tanah sawah menurut peraturan USEPA termasuk dalam kategori tercemar ringanpada titik sampel LS-4(Cr 25,6mg/l), LS-03(Cr 27,4mg/l), LS-02(Cr 34,1mg/l) dan tercemar beratpada LS-01(Cr 174,7mg/l). Sementara berdasarkan bakumutu lahan tercemar logam berat Thailand, As  dan Hg telah melampaui batas maskimum yang diperbolehkan, dimana untuk contoh tanah LS-03 (As 4,0mg/l) dan LS-04(As 4,2mg/l), sedangkan untuk Hg telah melampaui batas maskimum yang diperbolehkan pada contoh tanah LS-02(Hg 25,9mg/l) dan LS-01(Hg 92,2mg/l).Mengingat konsentrasi logam berat yang terukur merupakan hasil akumulasi, maka meskipun beberapa kandungan logam berat terukur rendah, tetap harus dilakukan pengawasan yang teratur.Kata kunci :industri tekstil, limbah cair tekstil, logam berat, lahan sawah
PENELITIAN PENGARUH PEMANFAATAN KONSORSIUM MIKROBA PENITRIFIKASI DALAM BUDIDAYA UDANG Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 5 No. 1 (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 | DOI: 10.29122/jtl.v5i1.294

Abstract

Research on application of consortia of Nitrifying bacteria on shrimp culture wasconducted in Grinting, Brebes, Central Java . The experiment method usedconsortia of nitrifying bacteria as a sole treatment on Pond A and Pond B as acontrol. Intensive observation on some water qualities parameter such astemperature, salinity, pH and turbidity was conducted during shrimp culturalperiod. The research result is indicated by distinction of survival rate (SR)between Pond A and Pond B. The SR for Pond A is greater (32,5%) than inPon B (14%), but it is still low SR for aquaculture activity.
STATUS KUALITAS AIR WADUK CIRATA DAN DAMPAKNYA TERHADAP PERTUMBUHAN IKAN BUDIDAYA Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 6 No. 1 (2005): 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 | DOI: 10.29122/jtl.v6i1.326

Abstract

Waduk Cirata is multipurpose cascade dam that lay in the middle of Citarumwatershed. Based on some reports, the water quality of this dam significantlydecreased to bad condition. This condition may be harmful to some equipmentsgenerating electricity power and also aquaculture product utilizing cages (KJA).The result of intensive observation during carps (Cyprinus carpio) culture periodconcluded that its aquaculture water changed into polluted called Eutrophicenvironment. There is correlation between eutrophication and lack growth of fishes in some cages. It is indicated by dominant increase of fish length than the increase of the weight of fish which is called as a negative allometric of fish growth.
PENGARUH APLIKASI KONSORSIUM MIKROBA PENITRIFIKASI TERHADAP KONSENTRASI AMONIA (NH3) PADA AIR TAMBAK Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 4 No. 2 (2003): 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 | DOI: 10.29122/jtl.v4i2.280

Abstract

An experiment on the utilization of nitrifying bacteria in shrimps pond ecosystemwas conducted in the village of Grinting, Brebes Regency. This experiment hastwo treatment ponds. Pond A was put nitrifying bacteria on as a treatment andpond B was without its treatment. The impact of the treatment was indicated by ammonia concentration measured, in which pond A was lower than pond B. In other words proved that nitrification process in pond A ecosystem was accelerated by the addition of nitrifying bacteria.
ANALISIS INDEKS KUALITAS AIR LINGKUNGAN PERTAMBANGAN BATUBARA PT KPC SUBDAS SANGATTA KALIMANTAN TIMUR Komarawidjaja, Wage
Jurnal Teknologi Lingkungan Vol. 12 No. 2 (2011)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.676 KB) | DOI: 10.29122/jtl.v12i2.1254

Abstract

Water quality index (IKA) is one tool to quickly predict the environmental quality status of an ecosystem or region to obtaining an alternative of the future management. Toanalyze the status of these indices utilize only data of environmental parameters that have been established as a key parameter determining the IKA. From the analysis of the mining area of PT KPC IKA with key parameters TDS, DO, COD, nitrogen (N) and phosphorus. (P) derived from the water quality of agricultural ecosystems, industry / mines and residential showed an index value of less well with thecategory (54.6163) on the interval 40 ≤ IKA <60. The low index value is proportional to the low value of ecosystem quality index industry / mining IKA (I) with a value of 45.82with categories of less well on the interval 40 ≤ IKA <60. Consider, that the index value of ecosystem quality residential IKA (H) and agricultural ecosystem quality index IKA (P) with good and excellent categories, then the ecosystem of industry / mining is the focus that needs to be considered for improved management efforts. 
RUMPUT LAUT GRACILARIA SP. SEBAGAI FITOREMEDIAN BAHAN ORGANIK PERAIRAN TAMBAK BUDIDAYA Wage Komarawidjaja
Jurnal Teknologi Lingkungan Vol. 6 No. 2 (2005): 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 | DOI: 10.29122/jtl.v6i2.346

Abstract

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.
STATUS KUALITAS AIR WADUK CIRATA DAN DAMPAKNYA TERHADAP PERTUMBUHAN IKAN BUDIDAYA Wage Komarawidjaja
Jurnal Teknologi Lingkungan Vol. 6 No. 1 (2005): 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 | DOI: 10.29122/jtl.v6i1.326

Abstract

Waduk Cirata is multipurpose cascade dam that lay in the middle of Citarumwatershed. Based on some reports, the water quality of this dam significantlydecreased to bad condition. This condition may be harmful to some equipmentsgenerating electricity power and also aquaculture product utilizing cages (KJA).The result of intensive observation during carps (Cyprinus carpio) culture periodconcluded that its aquaculture water changed into polluted called Eutrophicenvironment. There is correlation between eutrophication and lack growth of fishes in some cages. It is indicated by dominant increase of fish length than the increase of the weight of fish which is called as a negative allometric of fish growth.