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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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INFORMATION SYSTEM DEVELOPMENT FOR WATER TREATMENT TECHNOLOGY IN DISTRICT PANDEGLANG USING OPEN SOURCE SOFTWARE (OSS) Heru Dwi Wahjono
Jurnal Rekayasa Lingkungan Vol. 8 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1976

Abstract

Clean water needs in almost all regions in Indonesia became a very important thing nowadays, although the areas not experiencing drought. This is due to existing water is no longer eligible for use as daily life water. In some areas the water have been polluted and certain natural conditions make it difficult for population to get their water. Pandeglang district is one of disadvantaged areas that experiencing problems of clean water needs, although this area has water resources are abundant. To help residents in solving this problem, it will be required an information of water treatment technology that can be widely accessed by residents in the Pandeglang district. By using opensource software applications, the information system for water treatment technology can be developed to provide information of appropriate technology needs for solving the problem of providing clean water in Pandeglang.keywords : information system for technology, clean water management, waste water treatment, environmental technology, hypertext document, free open sourcesoftware (OSS).
MEDICINE HERBS (TOBA) PARK PLANNING IN STRUCTURING PUBLIC HEALHT CENTER (PUSKESMAS) Anton Gunarto
Jurnal Rekayasa Lingkungan Vol. 8 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1977

Abstract

Medicine Park Herbalia or Toba Puskesmas (Public Health Center) designed in their yards with the goal as a liaison between the human and the natural environment created to meet the spiritual needs (a beautiful atmosphere, secure, peaceful, relaxed, passive recreation, as a means of social and education) and physical needs (as ingredients, versatile, active recreation) for the occupants of Public Health Center or the owner of Toba. Toba can be said to succeed if the owner liked toba extent of the function and aesthetic value in accordance with the principles of design (theme, gradation, contrast, control) which is expressed in design elements (size, shape, texture, color). For simplicity in selecting the elements forming the park and in maintaining the design Toba need appreciation of art and science and technology through the introduction of the factors softscape and hardscape.keywords : medicine herbs park, public healht center (puskesmas)
IN VITRO TEST OF MANNOSE SPECIFIC ADHESIN (MSA) of Lactobacillus sp. AND ETHANOL EXTRACT OF SKIN FRUIT Garcinia mangostana L. BY USING Saccharomyces cerevisiae T. Yulinery., dkk
Jurnal Rekayasa Lingkungan Vol. 8 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1978

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.
PROTEASE FROM Bacillus sp. AS A DEGRADING CHICKEN FEATHER FOR PRODUCING FEATHER MEAL Siswa Setyahadi., dkk
Jurnal Rekayasa Lingkungan Vol. 8 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1979

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1980

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
DELIVERY MODEL FORAGE FEED FOR SUPPORTING SUSTAINABLE DEVELOPMENT OF BALI CATTLE ON MARGINAL LAND (Case Study District Gerokgak, Buleleng, Bali) I Made Rai Yasa., dkk
Jurnal Rekayasa Lingkungan Vol. 8 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1981

Abstract

This research is aimed at overcoming the limited forage problem at marginal land that adversly affects the sustainability of forest. The research was done at Gerokgak District, Buleleng Regency, Bali Province from April 2010 until March 2011. Because the feed problem is complex and dynamic, systems dynamic modelling was used as the method. This method supported with participatory rural appraisal methods for system identification, mean absolute percentage error method for analysis validity of model, and sensitivity analysis to determine the scenarios of feed scenarios. Simulation results showed that the feed available on the actual conditions (in 2009) is only able to meet 64.5% of the total feed required, and potentially to 48.5% in the long term (year 2034). In that period, the feed supply of 52,629 tons / year increased to 74,886 tons/year while consumption increased from 81,403 tons/year to 155,834 tons/year, thus it potentially increases the damage of forest because the burden of forests as the source of feed would increase from 35.5% to 51.5%. To overcome these problems, five scenarios was developed to increase the feed supply. From the five alternative scenarios, the highest increase of feed supply successively given by Scenario 2 (planting field boundary with forage plants), followed by Scenario 1 (introducing the new technology in maize and rice cultivation), Scenario 5 (building feed storages), Scenario 4 (increasing the number of forest community groups from four to 14) and the last is the Scenario 3 (plantingcorn in the dry season by utilizing irrigation ponds) Those scenarios give the potential additional supply of feed 51.6%, 30.1%, 10.1 %, 3.1% and 0.1% respectively. Partially, no single scenario can provide sustainable feed supply; to do so the combination of at least two scenarios must be implemented.keywords: forage supply model, Bali cattle, marginal land, system dynamicRai
PERFORMANCE TESTS OF COMPOST AND PADDY SOIL MEDIA BED ON GHG (CH4 & CO2) ELIMINATION IN LANDFILL Wahyu Purwanta
Jurnal Rekayasa Lingkungan Vol. 8 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v8i1.1982

Abstract

One method to reduce emissions of CH4 from municipal solid waste landfill is to modify the final cover layer. Methane (CH4) oxidation by methanotrophs bacteria in the soil cover layer can reduce the concentration of the CH4 emission to the atmosphere. Through field experiments, tested the effect of media bed thickness, moisture and nutrient content in the form of a media bed type that is compost and paddy soil. In general, the efficiency of oxidation by using compost media is higher than the use of paddy soil cover. For both media bed, moisture content 30% more efficient in the oxidation of CH4 compared to 20%. Moisture content determines the rate of gas diffusion between media bed with its gas phase (CH4 and O2). While for a thickness of 25 cm also produced a higher oxidation rate than the 15 cm because of the methanotrophs population.keywords: landfill gas; biofiltration; methane oxydation
DETERMINING THE DESALINATION UNIT COMPOSITION FOR COSTAL AREAS AND SMALL ISLANDS USE ANALYTIC HIERARCHY PROCESS Imam Setiadi; Dinda Rita K. Hartaja
Jurnal Rekayasa Lingkungan Vol. 9 No. 1 (2016): Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v9i1.1986

Abstract

Selection of the appropriate composition desalination units can be done with a variety of method approaches, one of the method is the Analytic Hierarchy Process. In determining the desalination unit with AHP method to consider is setting a goal, an alternative criteria and pairwise comparison. Research for the determination of the exact composition of the desalination unit in order to achieve sustainable drinking water suppy in coastal areas and small islands has been conducted. The results of the study are as follows, the energy demand of 50.83%, operator costs of 26.64%, maintenance costs of 14.13% and chemical requirement 8.4%. For an alternative composition desalination unit of RO 10 m3 / day is the best alternative composition with value of 59.61%, the composition of the next alternative is RO 20 m3/ day of 30.40% and the last alternative of the desalination unit composition is RO 120 m3/ day of 09.99%.Key words : Desalination, Mukti Stage Flash Composition, AHP
EFFECT OF HARVESTING MICROALGAE (Chlorella sp.) CONTINUOUSLY TO ITS GROWTH IN THE FOTOBIOREAKTOR Anies Ma'rufatin
Jurnal Rekayasa Lingkungan Vol. 9 No. 1 (2016): Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v9i1.1987

Abstract

Currently, the photobioreactor (FBR) has been developed and utilized to investigate (knowing in detail) the metabolic processes of cells of microorganisms, such as microalgae. FBR technology MTAP (Multi Tubular Photobioreactor Airlift) is a continuous system that is closed and controled for the growth. Then, this technology conducted continuous harvesting trial. Continuous harvesting system is cultivated by reducing of microalgae solution volume then is added by new solution of FBR MTAP system in operation. The number of reactors in the FBR MTAP are two reactors were used that Reactor 1 and Reactor 2. Microalgae was grown in 21 DAP (Days After Planting) and then harvested by reducing the volume 16.7% in each reactor in DAP 12. Based on the results of cells density, harvesting in the first phase, the optimum growth occurred at DAP 7 for Reactor 1 and Reactor 2, while harvesting their optimum growth phase II DAP 16 for Reactor 1 and DAP 19 for Reactor 2. Comparison of cell density on both reactors FBR MTAP conducted trial period of harvesting microalgae Chlorella sp. freshwater DAP 12 and DAP 21 are optimal to be done continuously without dewatering and sterilization performed the FBR system MTAP.Key words: photobioreactor, continuous harvesting, microalgae growth, cell density, Chlorella sp.
REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY Taty Hernaningsih
Jurnal Rekayasa Lingkungan Vol. 9 No. 1 (2016): Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v9i1.1988

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

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