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Program Pascasarjana Ilmu Lingkungan Universitas Riau Gedung I, Jl. Pattimura No. 9, Gobah Pekanbaru Telp.Fax. 0761-23742
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Jurnal Ilmu Lingkungan
Published by Universitas Riau
ISSN : 19785283     EISSN : 27214583     DOI : -
Core Subject : Social,
Environmental Science
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan" : 6 Documents clear
PERTUMBUHAN DAN PRODUKSI MIKROALGA PORPHYRIDIUM AERUGINEUM (Rhodopyceae) PADA SALINITAS DAN FOTOPERIODA BERBEDA. Aras Mulyadi
Jurnal Ilmu Lingkungan Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.1.1.p.18-27

Abstract

The growth and production of Porphyridiuni aerugineuni has been studied at different salinity: 0 % o, 5 %o, 10 %o and photoperiod: 1Oh/14h, 14h/1Oh, 18h/6h. Bacth culture of red ? nicroalgae has been apllied on F/2 Guillard medium and 25 °C. The salinity has influenced the growth of Porphyridium aerugineum. The optimal growth of this rhodophyceae was on freshwater. While the increase of salinity has decreased the cells concentration; but has increased the growth rate and the production. The prolongation of photophase has increased the growth and production of this rhodophyceae. But the cells concentration and dry weight of Porphyridium aerugineum was better on photoperiod of 14W /10 than 18h/6h.
PERBAIKAN KUALITAS AIR DENGAN PENGELOLAAN SECARA FISIKA DAN KIMIA. Yennita Yennita; Mulyadi Mulyadi; Mubarak Mubarak
Jurnal Ilmu Lingkungan Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.1.1.p.28-36

Abstract

Improving of water quality from siak river that have been used for long time by communities around the river for many purposes such as drinking water and washing has been done by implementing various method such as filtration, coagulation, aeration absorption. Each method has specific characteristic and advantages. Filtration with sand and gravels can decrease concentration of total suspended solid, Fe, Mn and organic material (KMnO4). Coagulation with alum (Al2SO4) can decrease TSS Concentration, Fe, Mn, NO3, NO2, KMnO4, coliform and coli fecal. Furthermore, aeration with a oxygen can decrease TSS concentration, TDS, Fe and Mn. While absorption whit active carbon can decrease concentration of TSS, Mn and Fe. After the four methods had been studied, the best result was obtained through combination of four methods (filtration, coagulation, aeration and absorption). 
POLA PENYEBARAN MINYAK DI PERAIRAN SELAT RUPAT DUMAI, RIAU. Thamrin Thamrin; Khairil Anwar; Mubarak Mubarak
Jurnal Ilmu Lingkungan Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.1.1.p.37-44

Abstract

Observation of oil concentration was conducted to know pattern of oil distribution in Rupat Strait in front of Dumai City, Riau. Samples were collected on 19 sampling side on Rupat Strait in June 2007, and the samples transported to Chemistry Laboratoty, FMJPA, Riau University before data were analyzed by using software surfer. Highest concent ration of oil was detected around harbor of Duinai City and distribu ted to both northern and southern from around the Harbor. Concentration pattern of oil distribution decreased toward all directions from a round harbor, and may be controlled by tidal current which cause oil distribution occurred horizontally with the coast of Dumai City side was longer thami vertical distribution from Dumai side to Rupat Island. 
SUHU GAS BUANG MESIN DIESEL KAPAL PERIKANAN DENGAN BIOFUEL. Muchtar Ahmad
Jurnal Ilmu Lingkungan Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.1.1.p.1-8

Abstract

Gas emission and temperature as result of fuel used in diesel engine of a fishing boat were ineasu red, in order to know its impact on fisherman comfortness as well as also can use to understand its share in global wartning or climate change. The temperature of emission gas of solar is stable increase proportional top the engine round (rpm). it is similar with mixture biofuel but the increase rate of emission gas of tile mixture biofuel rather low, even the gas emission temperature of 65% biofuel+35% solar tincture decrease as engine round (rpm) increasing. Similarly to the water cooler temperature of engine, but almost stable specially during the engine round of 500rpm to 2200 rpm. it shows that engine water cooler effectively absorp the engine temperature so that the temperature of engine tend to decrease as it indicates by the temperature of oh. Generally the oh temperature decrease as the engine round increase, as it is a reflection of engine temperature too. The emission gas of biofuel+ solar mixture from exhaust pipe almost without color and no aroma, while the color of solar fuel deeply black with uncomfort smelly. The emission gas of biofuel+ solar mixture from exhaust pipe almost without color and no aroma, while the color of solar fuel deeply black with uncomfort smell.
PENYUSUNAN ALGORITMA PENDUGA KONSENTRASI Chl-a DAN CITRA KAMERA DIGITAL Syaiful R. Harahap; Sofyan H. Siregar; Thamrin Thamrin
Jurnal Ilmu Lingkungan Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.1.1.p.45-51

Abstract

The study of assesment model on chl-a was conducted iii Aquaculture pond of Fisheries and Marine Science Faculty, Riau University from May to September 2007. Digital Number (DN) of digital camera and in situ data were used to generate the assesment model using regression analysis. The equation of Chl-a concentration was derived from dig ital camera, i.e. Y= 0.9259X + 0.0024. Y= chl-a concentration and X= (Band 3/(Bandl + Band 2). The formula showed a significant relation between DN of digital camera and Chl-a (r = 0,87) at the level convidence of 95%. The average of C/il-a assesment using the model is 0.25 mg/i. Both of this algorithm was generated to application of hatchery, fish pond and calm waters.
FAKTOR KONSENTRASI DAN KONDISI TUNAK RADIOAKTIF PERUNUT 109Cd PADA KERANG HIJAU (PERNA VIRIDIS) Yusni Ikhwan Siregar
Jurnal Ilmu Lingkungan Vol 1, No 1 (2007): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.1.1.p.9-17

Abstract

Laboratory study on the concentration factors and steady state condition of Cadmium (Cd) by green mussel (Perna viridis) has been carried out. Radiotracer 109Cd was applied in the study. The objective of the study was to evaluate bioaccumulation parameters including con- cent ration factors and steady state condition of cadmium by green mussel from dissolved phase. It was found that both salinity and temperature had significant effect (P<0.001) on accumulation rate of 109Cd. The highest concentration factor of Cd (31,23-54,09) was appeared in water salinity of 29% and of water temperature 31°C. Apparently, green mussel accumulated 72,21-107,80 Bq/gr Cd at the steady state condilion. It revealed that the small Perna viridis (5.2 cm in length) accumulated 109Cd about 107,80 Bq/gr, whereas the bigger size of the green mussel (6.6 cm in length) had an uptake of about 72,21 Bq/gr.

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