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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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UTILIZATION OF OLD NUTMEG FLESH WASTE IN MALUKU Dumadi, Suryatmi Retno
Jurnal Rekayasa Lingkungan Vol 7, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Until the end of 2007, nutmeg flesh had been disposed as a waste because it is not harnessed into a valuable product in nutmeg producer area on the island of Ambon and Banda in Maluku. Diversification treatment from nutmeg flesh waste into syrup can provide economical value to the product, and health benefits to those who consume it. Manufacturing process done by using simple apparatus starts from extracting nutmeg liquid, sterilizing nutmeg syrup container, mixing with sugar, bottling, labeling to produce salable nutmeg syrup. The 1:1 ratio of nutmeg liquid to sugar gives good taste and preferred. Extracted flesh waste has been utilized as nutmeg flesh cake by mixing sugar in ratio of 1:1, battering evenly and drying in the sun or a heating oven at temperature of 50 oC to produce tasty nutmeg cake with economical value-added.keywords : nutmeg flesh waste, nutmeg syrup, old nutmeg.
EVALUASI PERUBAHAN KUALITAS TANAH PADA LAHAN BEKAS PENAMBANGAN NIKEL DI PULAU GEBE Wibowo, Mardi
Jurnal Rekayasa Lingkungan Vol 4, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Since year 1977 until 2005, PT. ANTAM has been exploited nickel ore resources at Gebe Island – Center ofHalmahera District – North Maluku Province. Mining activity, beside give economically advantages also causedegradation of environment quality espicially land quality. Therefore, it need evaluation activity for change ofland quality at Gebe Island after mining activity.From chemical rehabilitation aspect, post mining land and rehabilitation land indacate very lack and lackfertility (base saturated 45,87 – 99,6%; cation exchange capacity 9,43 – 12,43%; Organic Carbon 1,12 –2,31%). From availability of nutrirnt element aspect, post mining land and rehabilitation land indicate verylack and lack fertility (nitrogen 0,1 – 1,19%). Base on that data, it can be concluded that land reclamationactivity not yet achieve standart condition of chemical land.Key words : land quality, post mining lan
REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY Hernaningsih, Taty
Jurnal Rekayasa Lingkungan Vol 9, No 1 (2016): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly
ISOLASI DAN IDENTIFIKASI BAKTERI LIMBAH BIODIESEL PENGHASIL BIO-ENERGI DAN BIO-MATERIAL Rachman, Mahyudin Abdul
Jurnal Rekayasa Lingkungan Vol 5, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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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.
PREFACE Preface, Preface
Jurnal Rekayasa Lingkungan Vol 6, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

APLIKASI PEMANFAATAN GAMBUT UNTUK PENGEMBANGAN ZONA PRODUKTIF DI BANTARAN SUNGAI SIAK Sittadewi, E. Hanggari
Jurnal Rekayasa Lingkungan Vol 6, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

The productive zone in Siak river’s corridor can utilized to increase the social economic after due consideration of conservation aspect. Land of that zone can be developed for production of horticulture or plantation. Choosing peat compost (an organic fertilizer) to improve soil quality in the productive zone of Siak river’s corridor is a good practice due to peat function to support plant growth both qualitatively and quantitatively. In addition the usage also decrease agriculturalbase pollution. This paper describe experimentation result the peat organic fertilization to develop productive zone in the Siak river’s corridor. The use of peat organic fertilizaton in the productive zone of Siak river’s corridor, have positive growth’s respon for horticulture (chilli, pakcoy, terong belanda, cucumber), no nutrient deficiencies and have good yield.Key words : productive zone in Siak river’s corridor, peat compost.
DESAIN INSTALASI PENGOLAHAN AIR LIMBAH RUMAH SAKIT KAPASITAS 40 M3/HARI Hartaja, Dinda Rita Krishumartani
Jurnal Rekayasa Lingkungan Vol 10, No 2 (2017): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Air limbah rumah sakit merupakan salah satu polutan yang paling potensial bagilingkungan, karena sifatnya yang merupakan campuran beragam material organik dan bahkan bersifat patogen. Dengan demikian limbah harus diolah dengan benarsebelum dibuang ke badan lingkungan. Namun, dana dan lahan yang terbatasbiasanya menjadi kendala saat rumah sakit akan membangun fasilitas pengolahanlimbah, terutama untuk rumah sakit menengah dan kecil. Mengingat permasalahannya, pengembangan fasilitas pengolahan limbah yang tepat dan murah dalam hal teknologi, harga dan kemudahan pengoperasian sangat penting. Dalam makalah ini dijelaskan desain instalasi pengolahan air limbah (IPAL) denganpengolahan biologis untuk rumah sakit yang sesuai yaitu dengan proses pengolahanair limbah biofilter anaerob aerob dengan kapasitas 40 m3/hari, atau kurang lebihuntuk kapasitas jumlah tempat tidur di rumah sakit sebanyak 50 tempat tidur. Dengan menerapkan sistem biofilter anaerob - aerob ini, konsentrasi COD, BOD dan bahan padat tersuspensi dapat dikurangi secara signifikan serta detergen dan amonia.kata kunci : biofilter anaerob aerob, desain, IPAL, pengolahan biologis
PROTEASE FROM Bacillus sp. AS A DEGRADING CHICKEN FEATHER FOR PRODUCING FEATHER MEAL Setyahadi., dkk, Siswa
Jurnal Rekayasa Lingkungan Vol 8, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Chicken feathers are a significant source of protein for livestock because ofhigh protein content and contain large amounts of cystine, glycine, arginine, and phenylalanine. Chicken feathers are not hydrolyzed, it is very difficult to digest by nonruminant animals because they contain high keratin. Hydrolyzed chicken feathers are not very difficult to digest by nonruminant animals because they contain high keratin. Raw chicken feathers must be hydrolyzed to be used as a feed ingredient for nonruminant species. Processing through bio-fermentation of chicken feathers would lead to overhaul the structure of the network, termination of disulfide bonds,hydrogen bonds and decreased levels of keratin. One of the processing of chicken feathers into feather meal is to utilize the specific proteases that degrade keratin. Bacillus sp. which has been isolated from Kawah Putih crater, Ciwidey, Bandung is a protease-producing bacterium. Fermentation using a medium containing: 2.8% (w/ v) glucose, 0.5% (w / v) urea and 0.005% (w / v) yeast extract with the conditions of the process carried out at pH 7.5; temperature 37 0C; shaker incubator 150 rpm will produce protease with the activity of 121 U / ml and prote in content 6.65 mg /ml in 36 hours. Hydrolysis of chicken feather needs to be pepsin digestibility tested to ensure that it has been processed correctly. Chicken feathers was obtained from slaughterhouses in Bogor. Pepsin digestibility of feather meal after hydrolyzed by proteases from Bacillus sp. is 67.4%.Keywords: feather meal, protease, fermentation, Bacillus sp.
PEMANFAATAN KULIT BUAH PISANG NANGKA SEBAGAI SUBSTRAT FERMENTASI PADAT PADA PRODUKSI XILANASE dkk, Trismilah
Jurnal Rekayasa Lingkungan Vol 5, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Jackfruit skin bananas (Musa sp.) one of the agricultural waste that is rich nutrients for the growth of microorganisms, can be used as a substrate of xilan for the production xilanase. The research aims to know the optimum conditionsof solid fermentation for production xilanase Bacillus licheniformis I-5 using a jackfruit skin banana as substrate. Optimization includes the incubation time for 72 hours with the interval measurement activities every six hours, the moisture content variation on the 1: 1.0 (55%); 1: 1.5 (65%); 1: 2.0 (70%); 1 : 2.5 (74%) (w / v), incubation temperature variation in the 40 °, 45 °, 50 °, 55 °, 60 ° C and the addition of carbon and nitrogen source on the concentration of 1, 2,3, 4, and 5% (w / w). Fermentation carried out in erlenmeyer 250 ml, containing 10 g cod banana jackfruit, 0.4 K2HPO4, and 0.2 MgSO4 (g / l). Results of research shows that the optimum activity xilanase to 48 hours of fermentation,moisture content 1: 1.5 (65%) and incubation temperature 50 ° C with the activity of 0410 ± 0102 U / ml. The addition of glucose and prevent xilosa activities to be 0032 ± 0007 U / ml and 0053 ± 0025 U / ml concentration in 5%. Pepton addition of 4% increased the activity is not signifi cant to control the 0487 ± 0073 U / ml.
PREFACE Preface, Preface
Jurnal Rekayasa Lingkungan Vol 5, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

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