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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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PENGARUH PERLAKUAN ALKALI PADA LIMBAH KULIT KOPI DAN PENINGKATAN KECERNAANNYA DENGAN TEKNIK IN VITRO Fariani., dkk, A.
Jurnal Rekayasa Lingkungan Vol 5, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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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
INSIDE COVER Cover, Inside
Jurnal Rekayasa Lingkungan Vol 6, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

PERSEPSI MASYARAKAT TERHADAP PEMILAHAN SAMPAH (Studi Masyarakat Jakarta, Tangerang, Bekasi, Depok) Widodo, Lestario
Jurnal Rekayasa Lingkungan Vol 6, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Act No. 18 of 2008 on Waste Management mandate that the community or household is the beginning of the stage of waste management processes, which make waste separation. Up to know solid waste management in urban area is still a complex problem, either from social, management, or technology aspects. The other problem of solid waste management is due to the people behaviour, which is mostly still unaware. Community respondents do not wish to waste segregation and argued that the waste separation should be done by the government. Seen thatthe awareness for change in how to manage the waste is still low. Local governments still need to continue to disseminate the Act No. 18 of 2008 on Waste Management and provide motivation to the community or households that are willing to segregation waste at the source.Keywords : waste, waste separation, community perception of waste
IN VITRO TEST OF MANNOSE SPECIFIC ADHESIN (MSA) of Lactobacillus sp. AND ETHANOL EXTRACT OF SKIN FRUIT Garcinia mangostana L. BY USING Saccharomyces cerevisiae Yulinery., dkk, T.
Jurnal Rekayasa Lingkungan Vol 8, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Infection disease is a threat for human life. Research on preventing infection disease is very important. The aim this research was to improve the preventing of infection disease. This research was the basic on identification of MSA activity. The in vitro result of MSA which was isolated from mangosteen (Garcinia mangostana L.) and the extract of the fruit skin byusing Saccharomyces cerevisiae. The result showed that there were 11 isolates of potential Lactobacillus, that have variation in MSA activities. Four isolates of them showed that the higher activities between 9.6-11.8 were TM1, BST1, BST2, and BST5. The MSA activities showed by reducing coagulation after adding D-Mannose. The highest activities showedby isolate TM1, and the lowest showed by isolate BST7. By using this method it is clearly found that the skin fruit not contain MSAkeywords : mannose-specific adhesin (msa ), probiotic, Saccharomyces cerevisiae.
PEMANFAATAN LIMBAH DAGING BUAH PALA TUA DI MALUKU Dumadi, Suryatmi Retno
Jurnal Rekayasa Lingkungan Vol 5, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

It was until the end of 2007, the meat of nutmeg was abandoned near the trees, in Mollucas Islands, especially in Ambon island and Banda island. The nutmeg meat was considered as waste of nutmeg agribusiness. An effort to make the waste become a valuable product had been done. It was used as the raw material of nutmeg syroop which gives added value to nutmeg and benefi t to those who drink it. The process and apparatus to make the syroop were simple, it begin with extraction of nutmeg meat, sterilization of the syroop container, mixing the extract with sugar, bottling, labeling. With the ratio of extracted juice to sugar 1:1, the product have good taste and fl avor, which was preferred by panels. The syroop produced contained vitamine C 1,22% and reduced sugar of 25,35%. Financial analysis showed the profi t of this product was Rp.10.000,- per bottle and could be increased by expanding market and production.Keywords : Waste of nutmeg, abandoned, added value, extracted juice, syroop, profi t, market, taste, flavor
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Jurnal Rekayasa Lingkungan Vol 5, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

PERLAKUAN ETHYL METHANE SULFONATE (EMS) PADA ENTEROBACTER AEROGENES AY-2 DARI LIMBAH METAN FERMENTASI UNTUK PENINGKATAN PRODUKSI GAS HIDROGEN Rachman, Mahyudin Abdul
Jurnal Rekayasa Lingkungan Vol 6, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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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 defficient.Keywords: Enterobacter aerogenes AY-2, ethyl methane sulfonate (EMS), H2 and methanesludge
Jurnal Rekayasa Lingkungan Lingkungan, Jurnal Rekayasa
Jurnal Rekayasa Lingkungan Vol 11, No 1 (2018): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

TIMBULAN SAMPAH KAWASAN KANTOR BPPT Shochib, Rosita
Jurnal Rekayasa Lingkungan Vol 6, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Solid Waste genartion is amount of wastes generated by a given source or category of. Sources per day in weight or volume. Data of waste generation is necessary in design of solid waste management system. For that purpose, a research about waste generation will be performed. The analysis is focused to office solid waste, base on SNI 19-3964-1994 for 8 days. Based on waste collection, the sourses of office solid waste are working place, Canteen, and yard. The research’s result shows that everage of office solid waste generation in BPPT is 0.15 kg/employee/day or 0.222 kg/sq meter/perday in weightKeywords : office waste generation, waste, waste collection, sources of office waste, unity of solid waste
PROSPECT OF SEAWEED AS ENVIRONMENTALLY FRIENDLY RAW MATERIALS FOR PAPER INDUSTRY Kustantiny, Anny
Jurnal Rekayasa Lingkungan Vol 7, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Seaweed is a commodity which has great potency to be developed and commonly used in food and non-food industry, such as cosmetic and pharmaceutical. Currently, seaweed can also be utilized as raw material for pulp to support an environmental friendly paper industry. Research has been done by scientists from Korea who developed the processing technology of red algae by using extraction and bleaching process. The process is very simple, need less energy and environmental friendly chemical material. Red algae species which is used in this process is Gelidium amansii, which is very suitable for paper industry purposes and can be harvested in around 3 months, therefore this is different with wood pulp. There is a cooperation between Korea and Indonesiain producing Gelidium in Indonesia. This paper presents the assessment of red algae pulp processing technology and examines several matters that should be considered in developing red algae pulp industry in Indonesia. In term of resources, support from the government, universities and research institutions and acceptance of the industry.keywords : seaweed, red algae, extraction, paper, environment

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