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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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STUDY ON PROPAGATION AND GROWTH OF ARROWROOT (MARANTA ARUNDINACEAE L.) AVAILABILITY IN A DIFFERENT LIGHT CONDITION Wawo., dkk, Albert H.
Jurnal Rekayasa Lingkungan Vol 7, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Study on propagation and growth of arrowroot (Maranta arundinaceae L.) on different availability light condition. Arrowroot is a rhizome herbaceous plant that has potential as carbohydrate resources. The aims of this research are to use rhizome efficiently as material propagation on different availability light condition in order to get the best plant growth and arrowroot production. The research included 2 factors, which were internodes number of rhizome and shading, consisted of 6 combined treatments as factorial with Randomized Complete Design and three repetitions. The result of this research shown that by using 3 internodes of rhizome is the best material for propagation and produced the highest rhizome. The height of arrowroot was higher under shading than without shading. Arrowroot plants without any shading produced the highest fresh weight of rhizome compared to with 30% shading in Bogor condition.keywords: arrowroot, propagation, number of internode, shading.
ASPEK MIKROBIOLOGI DALAM PENGOLAHAN AIR SIAP MINUM MENGGUNAKAN MEMBRAN REVERSE OSMOSIS Prayitno, Joko
Jurnal Rekayasa Lingkungan Vol 12, No 2 (2019): JURNAL REKAYASA LINGKUNGAN
Publisher : BPPT

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Abstract

Teknologi reverse osmosis (RO) sudah banyak digunakan untuk mengolah air baku menjadi air siap minum (ARSINUM). Masalah yang sering dijumpai dalam proses pengolahan air baku untuk ARSINUM menggunakan RO diantaranya adalah keberadaan mikroorganisme dari air proses dan pembentukan biofilm. Mikroorganisme yang lolos dari membran RO dan bertahan dari perlakuan desinfektan dapat berkembangbiak dan menjadi sumber kontaminan. Karena itu, kualitas ARSINUM yang dihasilkan, khususnya dari aspek mikrobiologi, perlu dikontrol secara periodik untuk memastikan ARSINUM itu aman untuk dikonsumsi. Dalam makalah ini dibahas mengenai permasalahan yang dijumpai dalam aplikasi teknologi RO untuk produksi ARSINUM dari aspek mikrobiologi dan beberapa alternatif untuk penanggulangannya. Kata Kunci : reverse osmosis, air minum, mikroorganisme, biofilm
KEBIJAKAN DAN STRATEGI PENGELOLAANAIR LIMBAH DOMESTIK DI INDONESIA Yudo, Satmoko; Said, Nusa Idaman
Jurnal Rekayasa Lingkungan Vol 10, No 2 (2017): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Masalah pencemaran lingkungan di kota-kota besar menunjukkan gejala yang cukup serius khususnya pencemaran air. Penyebab pencemaran tersebut tidak hanya akibat air limbah industri tetapi hal ini juga air limbah rumah tangga/permukiman (domestik) yang semakin hari makin besar sesuai perkembangan penduduk. Upaya-upaya pemerintah dalam menanggulangi permasalah tersebut telah banyak dilakukan antara lain telah dikeluarkan undang-undang maupun peraturan-peraturan baik dari pemerintah maupun dari kementerian serta lainnya. Akan tetapi hasilnya masih belum signifikan, permasalahan masih terus berlanjut. Tujuan dari penulisan ini adalah untukmemberikan informasi tentang kebijakan dan strategi pengelolaan air limbah domestik dalam rangka mendukung pengelolaan air limbah permukiman yang terpadu, efisien dan efektif dalam perencanaan, pembiayaan dan pembangunaan serta pelaksanaannya. kata kunci : pencemaran air, air limbah domestik, kebijakan dan strategi 
PENGOLAHAN DAN PEMANFAATAN AIR LIMBAH INDUSTRI BIODIESEL Mulyanto, Adi
Jurnal Rekayasa Lingkungan Vol 5, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

As a tropical country, the availability of biomass is very abundant in Indonesia. Biomass is a source for renewable energy. One of the renewable energy is biodiesel. Biodiesel is produced by trans-esterifi cation of oil/fat. During the process, biodiesel industry produces either wastewater and/or solid waste. The wastes should be treated carefully. The wastes from biodiesel industry are categorized as organic wastes. Therefore, the treatment and utilization of such wastes is done biologically. The wastewater will be treated through in series of anaerobic, aerobic process and artifi cial wetland. Gas resulted from the stripping process in aerobic lagoon will be treated by using biofi lter. The solid waste will be utilized for producing compost by wind row composting. Wastewater from biodiesel industry contains high organic matter. The Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) are 21.300 mg/L and 6.300 mg/L. Therefore, during treatment the process should be carefully handled. The quality of treated wastewater will be improved by treating it in an artifi cial wetland. When the treated wastewater has a positive impact towards the plant growth in the artifi cial wetland, then the treated wastewater will be utilized for liquid fertilizer by adding the macro and micro nutrient such as N, P, K, Ca, Mg, Mn, Co,Mo, S, and so forth. The prototype of wastewater treatment facility has been built in PUSPIPTEK Serpong with the capacity of 2.5 m3 of wastewater/day. The anaerobic process is established in an anaerobic digester (fi xed bed). The bed used is made of plastic. The aerobic digester is an activated sludge. Therefore, side products from this activity are biogas, compost and liquid fertilizer.Key words: fixed bed digester, activated sludge, biofi lter, compost, artifi cial wetland.
PERANCANGAN SISTEM KONTROL OTOMATIS AIR BAKU DAN AIR PRODUKSI PADA UNIT ARSINUM SMK AL-KAHFI KABUPATEN SUMBAWA Setiadi, Imam
Jurnal Rekayasa Lingkungan Vol 10, No 2 (2017): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Air minum serta akses untuk mendapatkan air minum yang sehat menjadi kebutuhan dasar yang harus dipenuhi terutama di daerah-daerah yang rawan air. Daerah rawan air yang dimaksud adalah daerah yang sulit dijangkau atau tidak terjangkau sama sekali oleh layanan air bersih yang disediakan oleh Perusahaan Daerah Air Minum, dan secara geografis memang susah untuk mendapatkan sumber air yang baik. Adanya sarana penyediaan air siap minum sistem osmosa balik yang dikembangkan oleh Pusat Teknologi Lingkungan BPPT memungkinkan untuk diterapkan dilokasilokasi sulit air, dan dengan demikian masalah kesulitan air dapat teratasi. Hanya saja perlu pengelolaan yang baik, operator handal yang memungkinkan alat tersebut dapat beroperasi  dan berkesinambungan. Kemudahan dalam mengontrol, serta otomatisasi menjadi pertimbangan tersendiri terhadap kemudahan dalam pengoperasian alat tersebut. Pemilihan pompa-pompa, serta peralatan pengontrol tangki-tangki dipilih sedemikian rupa agar tidak menyulitkan masarakat ketika mencari suku cadangnya. Untuk mengontrol tangki-tangki air pada sarana Arsinum digunakan teknologi yang sederhana, yaitu radar untuk mengatur tinggi muka air. Sistem kontrol radar berharga murah, mudah dalam penerapanya dan jaminan ketersediaan suku cadangnya bahkan banyak di kota-kota kecil.Kata kunci : air minum, osmosa balik, radar, murah, mudah
AIR LIMBAH INDUSTRI BIOETANOL BERBAHAN BAKU UBI KAYU SEBAGAI BAHAN BAKU PRODUKSI BIOGAS Mulyanto, Adi
Jurnal Rekayasa Lingkungan Vol 6, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

As a tropical country, Indonesia has riches of biomass. Cassava is one of biomass which contains plenty of carbohydrate. Carbohydrate then is utilized as a source for producing bioethanol. In producing of bioethanol, the process also yield side product named vinasse. Vinasse is produced from distillation process of solution containing ethanol which has concentration between 7 and 10%. Vinasse contents very high organic substances with COD and BOD concentration amounting of 30,000 mg/L and 27,000 mg/L respectively. Vinasse was then treated in an anaerobic process by using fixed bed digester. Anaerobic fixed bed digester volume was 225 L. The digester was provided with support materialsmade from cutted PVC pipe. The support materials has void volume of 93%. Therefore, the effective volume of the digester was 209 liters. The digester was operated by upflow mode. Research result from this experiment will be utilized as basic design for producing biogas at a bioethanol plant located in Lampung Tengah. Capacity of the plant is 8,000 litres of bioethanol per day. Whereas the vinasse produced is 100,000 litres per day.Keywords: bioethanol, vinasse,fixed bed digester, biogas, casava waste water
JURNAL REKAYASA LINGKUNGAN LINGKUNGAN, JURNAL REKAYASA
Jurnal Rekayasa Lingkungan Vol 12, No 1 (2019): JURNAL REKAYASA LINGKUNGAN
Publisher : BPPT

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Abstract

KEMAMPUAN DAN KEKUATAN BIOREMEDIASI AGEN HAYATI JAMUR FUNGI PELAPUK PUTIH dkk, Donawati
Jurnal Rekayasa Lingkungan Vol 4, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Indonesia is a tropical country and the richest country in the world for biodiversity, including fl ora and fauna, invertebrates, phytoplankton, bacteria, and huge number of fungus such as mushrooms, molds, mildews and smuts. White rot fungi is one of the ubiquitous creatures in Indonesia. Results indicated that white rot fungus has ability to degrade successfully some organic pollutansin the environment, such as polycyclic aromatic hydrocarbons (PAH), Polychlorinated Biphenyls (PCB?s), Trinitrotoluence (TNT), and DDT. This organism has ability to release intra and extra-cellular enzymes. There are three important rules in these degradation processes, called lignin modifi ed enzymes (LME?s) including Lignin peroxidase, Mn-dependent peroxidase and Laccase. White rot fungi contains all three enzymes and able to breakdown and mineralize several environmental pollutants into non toxic forms. This paper discuss several processes responsible for this degradation.Key words: White rot fungi, bioremediation, lignin modifi ed enzymes, persistent organic pollutants.
STRATEGI PENGEMBANGAN PULAU GEBE PASCA PENAMBANGAN NIKEL YANG BERKELANJUTAN Wibowo, Mardi
Jurnal Rekayasa Lingkungan Vol 5, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Since 1977 until 2005, PT. ANTAM has been exploited nickel ore resources at Gebe Island ? Center of Halmahera District ? North Maluku Province. Mining activity not only gives economically advantages, but also causes degradation of environment quality especially land quality. Therefore, it needs evaluation activity for land quality changing at Gebe Island after the mining activity (postmining). For handling Gebe Island after mining activity needs identification of the problems, potential and obstacles as the basic for arranging development strategy of Gebe Island. This research used Focused Group Discussion (FGD) method, desk study and field survey. Base on this research the important think has to be done, are : (a) to make or open new market at surround Gebe Island; (b) development Gebe Island has be base on locally resources and export oriented; (c ) needinvestor as prime mover in Gebe Island; (d) optimize of PT ANTAM?s asset; (e) increase institution coordination and program integration.Key words : sustainable development, post mining
PENDUGAAN PERKEMBANGAN POPULASI ORYCTES RHINOCEROS L. (COLEOPTERA: SCARABAEIDAE) DI PERKEBUNAN KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) Pujiastuti., dkk, Yulia
Jurnal Rekayasa Lingkungan Vol 6, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Approximately 1.000 species of insects are associated with coconut worldwide. Over 40 species of coleopteran pests have been recorded ? most are under effective natural control but some require interventions. In view of the increasing and devastating damage by coconut beetle (Oryctes rhinoceros) to coconut palms in the many countries, many efforts are made to find appropriate method to forecast its population. The basic procedures of these monitoring programs are outlined together with forecasting method. A study to forecast coconut beetle population has been carried out in palm oil estate, near Palembang. Study was aimed to estimate population after several observations of beetle population. Another aim was to assess the influences of environmental factors, i.e. temperature, relative humidity and rainfall intensity, which could affect to the beetle population fluctuation. Results showed beetle population could 65.12 percent in average due to unsuitable environmental factors. At first observation temperature was recorded 26 ? 30 0C and 1185 larvae werefound. At last observation larvae population decreased to 392 larvae at temperature 29 ? 33 0C. It was found that relative humidity and rainfall intensity also played important role in decreasing beetle population.Keywords: coconut beetle, time series analysis, population estimation, environmentalfactors

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