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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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Inside Cover Lingkungan, Jurnal Rekayasa
Jurnal Rekayasa Lingkungan Vol 10, No 2 (2017): Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

UTILIZATION OF RAWAPENING PEAT FOR NUTRIENT BLOCK AS A MEDIA NURSERIES Anthocephalus cadaba and Paraserianthes falcataria Sittadewi., dkk, E. Hanggari
Jurnal Rekayasa Lingkungan Vol 8, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Nutrient Block is a growing medium product in the form of a square (25 x 25 cm) or cylindrical (diameter = 20 cm, height = 25 cm) made of peat which has been composted, plus adhesive gypsum or tapioca waste. Nutrient Block is designed to support the post mining land rehabilitation program that is now threatening the environmental degradation in mining areas. Nutrient Block products has been proved good for growth because of the media in addition to having physical properties that are capable of storing large amounts of water, contain enough nutrients in the form available to plants,so it can support plant growth. Results of the Nutrient Block application test to Jabon (Anthocephalus cadaba) and Sengon (Paraserianthes falcataria) plants showed that good performance, both plant height and diameter of trees and leaf growth in plants Jabon appear healthy and getting wider.keywords: nutrient block, post-mining land rehabilitation. Paraserianthes falcataria, Anthocephalus cadaba
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 5, 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 deffi cient.Keywords: Enterobacter aerogenes AY-2, ethyl methane sulfonate (EMS), H2 and methane sludge
FRONT COVER Cover, Front
Jurnal Rekayasa Lingkungan Vol 5, No 2: Jurnal Rekayasa Lingkungan
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Abstract

PENAMBAHAN ENZIM CAIRAN RUMEN LIMBAH RUMAH POTONG HEWAN PADA PAKAN BERBASIS WHEAT POLLARD DENGAN PROSES PENGOLAHAN PADA KOMPOSISI KIMIA PAKAN Pantaya., dkk, Dadik
Jurnal Rekayasa Lingkungan Vol 6, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

The present study was conducted to clarify the effect of addition of enzymes from rumen liquor on performance broiler of pelleting feed with basal ration of wheat pollard with addition of enzymes and processing broiler diets. Ruminal enzymes were extracted from Australian Commercial Cross (ACC) cattles. Application of enzyme on wheat pollard. Enzyme was reacted with wheatpollard and mixed with another feedstuff before steam pelleting process. The combination nine experimental diets were used as follows three levels enzyme supplementation (0, 620 and 1.240 U/kg) and three levels steam temperature at (60, 80 and 100 oC) Feed particles size, hardness, PDI (Pellet Durability Index), moisture content, protein, GE and hemicellulosa were evaluated parameter devided into nine treatmens were used in this research. Data from Completely Randomized Design factorial 3 x 3 were analyzed with Anova, if differences were continued by Duncan’s new multiple range test. Enzyme supplementation decreased feed hardness and PDI. There were interaction beetwen enzyme and temperature for feed moisture content. Hemicellulosa was significantly reduced by steam temperature at 80 and 100 oC and enzyme supplementation 1.240 U/kgKey Words: enzyme liquor rumen, wheat pollard, steam pelleting, feed Chemical composition
BIOMASSA MIKROBIAL-ATP SEBAGAI BIOINDIKATOR TANAH TERCEMAR FLUAZINAM Suciati, Fuzi
Jurnal Rekayasa Lingkungan Vol 11, No 1 (2018): Jurnal Rekayasa Lingkungan
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Abstract

Fluazinam adalah suatu fungisida berbasis piridin yang diduga merupakan endocrine disrupture chemical (EDC). Pada pemanfaatannya, Fluazinam berpotensi menurunkan kesehatan dan mutu tanah (soil health) melalui perubahan level dan aktivitas ATP dalam tanah. Kandungan ATP tanah telah diketahui berhubungan erat dengan aktivitas jasad renik tanah sehingga kandungan ATP tersebut dapat digunakan sebagai indikator proses biokimia tanah serta ukuran biomassa aktif dalam tanah. Untuk mengkaji potensi dampak dari penggunaan fluazinam terhadap level ATP tanah dilakukan percobaan di laboratorium. Fluazinam dengan kepekatan 3000 mg/kg dicampurkan kepada tanah kemudian dikeringkan di udara terbuka. Selanjutnya pada akhir inkubasi selama 1-, 3-, 7-, dan 14-hari level ATP diidentifikasi. Level ATP ditetapkan dengan cara mengukur intensitas pendarfluor yang diemisikan oleh oxyluciferin pada kisaran panjang gelombang 550 – 570 nm menggunakan Luminometer (OPTOCOMP1 MGM USA). Penurunan secara konsisten kandungan ATP tanah selama dua minggu periode inkubasi memperlihatkan, dari 0.100 ± 0.006 menjadi 0.043 ± 0.009 nmol/g tanah. Hasil ini menunjukkan bahwa fluazinam mengganggu serta menurunkan kesehatan dan mutu tanah sehingga untuk memulihkan kualitas tanah yang terkena dampak fluazinam perlu dilakukan teknik dan prosedur aplikasi yang terkendali berdasarkan Best Management Practices (BMP).kata kunci: xenobiotics, fluazinam, ATP tanah, bioindikator, kesehatan tanah
INSIDE COVER Cover, Inside
Jurnal Rekayasa Lingkungan Vol 7, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

BIOLOGICAL FERTILIZER EFFECT OF HEAVY METAL ABSORPTION OF COPPER AND LEAD TO BABY CORN CROP sudaryono, Sudaryono
Jurnal Rekayasa Lingkungan Vol 7, No 3: Jurnal Rekayasa Lingkungan
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Abstract

Absorption of heavy metals by plants is influenced by soil and plant biology. Heavy metals are absorbed into plant tissues through the root, then enter the food chain cycle. Metal will accumulate in body tissues and can have negative impacts for humans, animals, and plants when exceeding the limit of tolerance. Heavy metal accumulation in plant tissues can directly affect plant growth and production, can indirectly affect human health when consuming food contaminated heavy metals. The research objective was to determine the ability of biological fertilizers containing bacteria Azotobacter sp. and Pseudomonas sp., in absorbing heavy metals (Cu and Pb) contained in landfill waste compost, which is used to fertilize crops corn (baby corn). The research methodologyuses a split plot design arranged in Completely Randomized Design with 3 blocks as replicates. The first factor that serves as the main plot of the biological fertilizer, consisting of two cedars, namely: no biological fertilizers and biological fertilizers. The second factor that functions as a sub plot that is a combination of landfill waste compost with NPK fertilizer, consisting of four treatments, namely: Compost waste landfill: no fertilizer NPK = 1: 0; compost waste landfill: NPK = 2/3 : 1/3; compost waste landfill: fertilizer NPK = 1/3: 2/3Without landfill waste compost: NPK = 0: 1. The results showed that administration of biological fertilizers in combination with compost waste landfill is more dominant for increasing and improving soil physical chemistry, such as increasing soil pH, nutrients nitrogen, phosphorus and potassium and cation exchange capacity (KPK). Biological fertilizer containing bacteria Azotobacter sp. and Pseudomonas sp. may reduce the uptake of heavy metals Cu to below the threshold of 2.526 to 15.79 ppm, the maximum content of Cu ranges between 20-100 ppm. The mean content of Pb in tissues and cobs of corn is above the maximum limit of 29.80 to 42.69 ppm, which is still allowed Pb content between 0.1 to 10 ppm. Means baby corn crop is not safe for consumption.key words: compost from the landfill, heavy metals, biological fertilizer
EVALUASI KONDISI LINGKUNGAN PERAIRAN KAWASAN PULAU ABANG, GALANG BARU, BATAM BERDASARKAN ANALISA INDEKS STORET DAN SIMILARITAS CANBERA Sachoemar, Suhendar I
Jurnal Rekayasa Lingkungan Vol 4, No 3: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

Evaluation of the water quality status at Abang Island Region was conducted by using the STORET and Canbera Similarity Indeks during Mei, June and October 2006. Thes analysis result shows that the water quality within this region was within the range of good to moderate. This condition indicats that the water quality status is still suitable to support the marine biotic life. During May, the water quality was good, but in June and October was decreased due to the increasing of the organic material transported by land surface run off driven by precipitation as response to the seasonal change.Key words : Kualitas air, Pulau Abang, Indeks Storet, Indeks Similaritas Canbera.
FRONT COVER Cover, Front
Jurnal Rekayasa Lingkungan Vol 4, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

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Abstract

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