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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
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
UJI KAPASITAS ABSORPSI AIR OLEH SELULOSA DARI TANDAN SAWIT SEBAGAI BAHAN SUPER ABSORBENT POLYMER (SAP) PADA POPOK SEKALI PAKAI Dewanti, Dian Purwitasari; Ma'rufatin, Anies; Nugroho, Rudi
Jurnal Rekayasa Lingkungan Vol 12, No 2 (2019): JURNAL REKAYASA LINGKUNGAN
Publisher : BPPT

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Abstract

Selulosa tandan kosong kelapa sawit merupakan bahan yang potensial untuk dijadikan produk lain yang bernilai yang salah satunya adalah super absorbent polymer (SAP). Keunggulannya dibandingkan dengan selulosa sintetik karena mudah didapat dan mudah terurai secara alami oleh lingkungan. Penggunaan selulosa sebagai bahan SAP diarahkan untuk diaplikasikan pada popok sekali pakai. Hal ini karena permintaan terhadap popok sekali pakai sudah sangat besar dan menimbulkan permasalahan lingkungan karena limbah habis pakainya. Sehingga, tujuan penelitian ini adalah menguji kemampuan penyerapan air oleh selulosa dan dibandingkan dengan SAP yang sudah diaplikasikan pada popok sekali pakai. Bahan yang digunakan dalam penelitian ini adalah selulosa yang diekstraksi dari tandan kosong kelapa sawit dan serat dalam popok sekali pakai. Ekstraksi dilakukan dengan proses pemurnian dalam larutan NaOH dan dilanjutkan dengan pemutihan menggunakan H2O2. Selulosa kering yang didapat selanjutnya diuji penyerapannya terhadap air. SAP dalam popok sekali pakai juga mengalami perlakuan sama untuk mengetahui kemampuan penyerapannya. Dari hasil pengujian, didapatkan bahwa selama 4 jam, selulosa mampu menyerap air sebanyak 7 kali berat selulosa awal. Sedangkan untuk SAP memiliki kemampuan penyerapan hingga 200 kali berat asal. Diharapkan dipenelitian berikutnya bisa dilakukan proses polimerisasi selulosa menjadi SAP sehingga bisa menggantikan SAP sintesis. Kata kunci : SAP, selulosa, popok sekali pakai, tandan kelapa sawit, polimerisasi 
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
KAJIAN KEMAMPUAN MUTAN BAKTERI Pseudomonas sp MENDEGRADASI BENZENA DALAM MIKROKOSMOS AIR TANAH Fahruddin fahruddin
Jurnal Rekayasa Lingkungan Vol. 6 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v6i1.1904

Abstract

Mutation induction with UV can increase microbe capacity in do metabolite includes in mendegradasi polutan’s material. mutagenesis UV’s result from isolat wildtipe Pseudomonas sp (ICBB33p) gotten two mutants which is ICBB33 4 and ICBB33 18. To the effect this research is done to test isolat’s ability that mutant bacteria is deep degradation benzene by compares with isolat parental or wildtipe. Mutant application is done on ground water microcosm that contains to concentrate benzene 125 ppm results benzene concentration decreases 17,82 ppm (86%) for ICBB33’S mutant 4 and 13,37 ppm (89%) for ICBB33’S mutant cell 18 , meanwhile parental’s cell stills to remain benzene concentration as big as 35,8 ppm (70%) of startup concentration 125 ppm. Decrease concentrates benzene, followed by population amount step-up bacteria cell and CO’s amount step-up 2 one that resultant.Key word: biodegradasi’s capacity step-up, UV- mutation, benzene, mutant.
PEMANTAUAN KUALITAS UDARA DI WILAYAH SEKITAR SEMBURAN LUMPUR SIDOARJO Heru Dwi Wahjono
Jurnal Rekayasa Lingkungan Vol. 6 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v6i1.1908

Abstract

Air quality changes due to the discharge gas in the vicinity of the location of bursts of mud in Sidoarjo disrupt the activities of people who live around. Concerns of the dangers caused by gas can increase the burden of the problems already experienced by them. Surveys measuring several parameters of gas in the villages around bursts mud needs to be done to provide clear information about the condition of air quality ambien. The measurement data processing and analysis results are expected to be used as an input when the decision is necessary to avoid another disaster due to the gas leak in that area.Keywords : Air Polution, Sidoarjo mudflow, Gas Consentration Monitoring, Bubble gas
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. 6 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v6i1.1909

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
TINJAUAN MANFAAT KOMPOS DAN APLIKASINYA PADA BERBAGAI BIDANG PERTANIAN Sri Wahyono
Jurnal Rekayasa Lingkungan Vol. 6 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v6i1.1910

Abstract

Application of chemical fertilizer without adding organic mater causing land poor in nutrients and low of microbial diversity. It causes dedradation of land fertility. This situation can be solved by applying of compost. Nevertheless, macronutriens content of compost are low, it has advantages such as improving physical soil properties, soil permeability, porosity, structure, water holding capacity, etc.Compost application effect is depend on the type of plant and physico-chemical properties of soil, compost characteristics, doses and time of compost application. Compost aplication is agronomically and economically benefit for farming activities that is in line with the organic farming.Key words: Compost, fertilizer, agricultural

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