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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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PERLAKUAN ETHYL METHANE SULFONATE (EMS) PADA ENTEROBACTER AEROGENES AY-2 DARI LIMBAH METAN FERMENTASI UNTUK PENINGKATAN PRODUKSI GAS HIDROGEN Mahyudin Abdul Rachman
Jurnal Rekayasa Lingkungan Vol. 5 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i1.1875

Abstract

Enterobacter aerogenes AY-2 mutant is known for hydrogen gas producer which ws obtained from the sludge of methane fermentation and the yield is 1.5 fold higher than wildtype. Hydrogen gas production can be gain via NADH oxidation in anaerobic metabolic pathway by blocking organic acid production. Metabolic pathway can be changed by mutagenesis. Enterobacter aerogenes AY-2 mutated with ethyl methane sulfonate in logarithmic phase with consentration 10, 11, 12, 13, 14 and 15 μl/ml cell suspention during 120 minute. Mutation that result lowest survival ratio (0,01%) was 14 μl EMS/ml cell suspention is repeated with variation incubation time, 30, 60, 90 and 120 minute. 166 double mutant colony has been collected and choosen randomly. The choosen 43 colony was fermented in glycerol complex medium for determining ten double mutant with the highest H2 production. Double mutant AD-H43 is a highest H2 producer that increase 20% H2 production from AY-2 and has a decrease lactid acid production, 31% less from AY-2. Increasing H2 production in double mutant AD-H43 is caused by lactate dehydrogenase deffi cient.Keywords: Enterobacter aerogenes AY-2, ethyl methane sulfonate (EMS), H2 and methane sludge
PENINGKATAN KUALITAS LIMBAH KULIT SINGKONG MELALUI PENAMBAHAN ASAM PROPIONAT SEBAGAI BAHAN BAKU PAKAN TERNAK S. Akhadiarto
Jurnal Rekayasa Lingkungan Vol. 5 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i1.1876

Abstract

Feed represent especial factors of animal husbandry because owning biggest expense from production cost. Feed effi ciency must be done to increase earnings. One of effort for the matter of that is look for alternative of raw material feed of cheaper livestock that is cassava peels. Cassava peels represent waste product from cassava industry with amount 1,998 million ton in the year 2006 in Indonesia (10 percentage of corm of yielded cassava). As constraint is its amount is which have the fl uctuation so that need depository effort of cassava peels. This research aim to know infl uence of use propionic acid as preservative to quality of nutrient of cassava peels. A period of depository observed too for its quality. Research conducted by during six-month in feed industrial laboratory of indicate that addition of 0.3% propionic acids and depository period infl uence quality of nutrient of cassava peels manifestly (P<0.05). Addition of 0.3% propionic acid gratuity not yet able to pursue growth of microorganism during depository. Growth of mould during depository infl uence to descend of water percentage, organics substance, protein, digesting of organic substance and digesting of dry substance.Key words : cassava pells, waste, propionic acids, nutrient.
UPAYA PENINGKATAN PRODUKTIVITAS LAHAN DENGAN SISTEM BUDIDAYA LORONG DAN PEMBERIAN KAPUR DOLOMIT DI KABUPATEN CIREBON, JAWA BARAT Daru Mulyono
Jurnal Rekayasa Lingkungan Vol. 5 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i1.1877

Abstract

The objective of the research is to know the effect of Alley Cropping to the land fertility, especially with the treatment of organic matter and combination between organic matter and dolomit, with regard to soybean production. The research used Complete Randomized Design with One Way Analysis of Variance, Regression, and Correlation in order to know the effect of treatment to the land fertility. The research was carried out in Cirebon Regency, West Java Province, during three planting seasons from 2007 to 2008. The results of the research showed that Flemengia congesta as a fence crop or hedgerows was signifi cant to land fertility through improvement of nutrients availability, increasing pH, decreasing availability of aluminium (Al). The effect of organic matter from prunning of the hedgerows into the soil to a high of 5,0 ton/ha will increase average soybean production from 13.974 kw/ha (dry grain) to 18.176 kw/ha or increase 30,07 %, whereas the effect of organic matter 5,0 ton/ha combined with dolomit 2,5 ton/ha will increase average soybean production from 13.974 kw/ha to 19.983 kw/ha or increase 43.00 %. The effect of organic matter 10,0 ton/ha combined with dolomit 2,5 ton/ha will increase average soybean production from 13.974 kw/ha to 21.966 kw/ha or increase 57.19 %.
PENGOLAHAN DAN PEMANFAATAN AIR LIMBAH INDUSTRI BIODIESEL Adi Mulyanto
Jurnal Rekayasa Lingkungan Vol. 5 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i1.1878

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.
EVALUASI POTENSI SUMBERDAYA AIR SUNGAI UNTUK PENGAIRAN DI PROVINSI JAWA BARAT DAN BANTEN Ig. Setyawan Purnama
Jurnal Rekayasa Lingkungan Vol. 5 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i1.1879

Abstract

The objectives of this research are to calculate river water potency and irrigation need in West Java and Banten, and evaluate its water balance. Calculation of river water potency is based on river discharge data in each river basins, whereas calculation of water need for agriculture is based on area width and irrigation need. The result of the research shows that the highest river water potency in West Java is in Cisadane-Ciliwung River Basins about 3119.81 million m3/year. The lowest river water potency is in downstream Citarum River Basin about 383.55 million m3/year. In Banten, the highest river water potency is in Cisadeg-Cikuningan River Basins about 4476.32 million m3/year, whereas thelowest is in Labuhan Merak River Basin about 596.33 million m3/year. According to water balance evaluation, the water balance of two provinces are also variative. In West Java, Upstream Citarum River Basin and Downstream Citarum River Basin almost get water defi cit in along year. In Banten, water defi cit in river basins just happen in several month. Base on water surplus, there are no river basin in West Java that get water surplus along year. In Banten, Ciujung River Basin get water surplus along year.Key words : river water, irrigation, river basin
KONSERVASI LAHAN TIDUR MENJADI DEMFARM KEBUN AGROMEDIKA HAMBARO (“KAMARO”) Anton Gunarto
Jurnal Rekayasa Lingkungan Vol. 5 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i1.1880

Abstract

Hambaro Agriculture Medical Farm (Kamaro) is sleeping land which is used for demonstration farming (demfarm) for agriculture medical plants. The aims of this research are (1) to plan, prepared and build demfarm for medical plants especially ginger, turmeric and temulawak, agriculture infrastructure, and another supporting building, (2) implemented land conservation technology with terrace-bench, cultivation and post harvest technology, and (3) introduce the technology to farmers’ around the farm. Form 2004 t0 2008 demfarm ginger production increased from 2.67 ton/ha to 3.50 ton/ha, turmeric production increased from 7.9 ton/ha to 16 ton/ha and temulawak production increased from 17.5 ton/ha to 25 ton/ha.Keywords : Land conservation, medical plants, Hambaro
ANALISIS PRODUKSI EMISI CO2 BERDASARKAN PRAKIRAAN PEMAKAIAN ENERGI 2008-2030 DI INDONESIA TERHADAP DUNIA Indyah Nurdyastuti
Jurnal Rekayasa Lingkungan Vol. 5 No. 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i2.1881

Abstract

An increase on population and income of people will be followed by an increase on the energy utilization. As consequence, the CO2 emission from the energy utilization also increases that has impact on increasing environmental problem. The increase of CO2 emission can be reduced by the utilization environment friendly energy source and technology such as using low carbon energysource and increasing the effi ciency of energy technology. In 2008, most of CO2 emission from energy utilization in the world was contributed from OECDcountries. Most of the CO2 emission from the energy utilization was from electric generation sector. The CO2 emission from energy source is infl uenced by carbon content and combustion system that used in the utilization. Total CO2 emission in the world was almost 33.932 million ton that about 1,3% or 438 million ton was contributed from Indonesia. These emission is estimated to increase in thegrowth rate of 3,5% per year until 2030.Key words: CO2 emission, energy utilization.
PENGARUH PERLAKUAN ALKALI PADA LIMBAH KULIT KOPI DAN PENINGKATAN KECERNAANNYA DENGAN TEKNIK IN VITRO A. Fariani., dkk
Jurnal Rekayasa Lingkungan Vol. 5 No. 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i2.1882

Abstract

This research was done to improve coffee pulp digestibility with alkali treatment and adding organic acid by in vitro. This research was done in two stage, fi rst stage was soaking in alkali fl uid and second stage was in vitro digestibility analysis, in Animal Feed and Nutrition Laboratory, Faculty of Agriculture, Sriwijaya University. Completely Randomized Design (CRD) used in 4 reatments and feed treatment was replicated 3 times. The treatments were: P0 (control), P1 (2 day soaking), P2 (3 day soaking) and P3 (4 day soaking). Observe parameters were tannin concentration, dry matter digestibility, organic matter digestibility, concentration of N-NH3 and (pH). The result showed that the treatment had nosignifi cant diference (P>0.01) on tannin concentration. However, it was signifi cantly difference on dry matter digestibility, organic matter digestibility, concentration of N-NH3, and (pH).Key Words: Coffee pulp, alkali treatment, digestibility, in vitro techniques
ISOLASI DAN IDENTIFIKASI BAKTERI LIMBAH BIODIESEL PENGHASIL BIO-ENERGI DAN BIO-MATERIAL Mahyudin Abdul Rachman
Jurnal Rekayasa Lingkungan Vol. 5 No. 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i2.1883

Abstract

Glycerol from the waste of biodiesel can be utilized to 1,3-propanediol (PDO) and hydrogen gas (H2) with biotransformation processing. The product of PDO will be used as raw material for polymer, polyurethane and polyester and H2 will be converted to electrical energy by using Fuel-cell. The anaerobe or aerobe bacterium which has ability to degrade biodiesel waste for environmental friendly such as genus Enterobacter, Klebsiella, Clostridium, Bacillus, Citrobacter, etc. The direct screening of bacteria for isolation from biodiesel waste in order to obtain the bacteria which has highest conversion of glycerol to PDO and H2. We have found that 28 species from liquid and 7 from solid biodiesel waste and by using IMVIC testing, 7 species of bacteria was Klebsiella or Enterobacter which can be predicted to convert glycerol for PDO and H2. The highest yield product was species TH3from biodiesel waste. Moreover, the microbiology identification indicated that the strain TH3 was Klebsiella sp. strain 23 with 98 % similarity.Key words : Waste of biodiesel, Glycerol, PDO, H2and bacteria.
PEMANASAN GLOBAL DAN PELAKSANAAN MEKANISME PEMBANGUNAN BERSIH SEKTOR ENERGI DI INDONESIA Irhan Febijanto
Jurnal Rekayasa Lingkungan Vol. 5 No. 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v5i2.1884

Abstract

At this time global warming became an environmental issue that most often discussed. At the same time, as a trigger of green house gasses business, the issue of carbon trading business became an interesting discussion, because it has an impact to improve the feasibility of the project. This paper discussed the causes of global warming, the mechanism of global warming and the efforts to reduce green house gasses using Clean Development Mechanism. In addition, carbon price fl uctuation and the procedures of carbon trading are described also. Finally, potentialClean Development Mechanism projects in energy sector and implemented Clean Development Mechanism projects in Indonesia are discussed.Key Words : Global warming, Clean Development Mechanism (CDM), CDM project, Certified Emission Reduction (CER), Carbon Trading

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