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All Journal EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Sutanto, -
Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Mathematics

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HUJAN ASAM DAN LEACHING Fe KE DALAM AIR SUMUR DI WILAYAH INDUSTRI Sutanto, -; Iryani, Ani; Anwar, Syaiful; June, Tania
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Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

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Abstract

Wilayah Cibinong-Citeureup terdapat banyak industri, berdebu, dan telah mengalami hujan asam. Salah satu dampak hujan asam adalah degradasi kualitas air sumur. Lebih kurang 75% penduduk di wilayah ini yang memanfaatkan air sumur sebagai air minum. Telah dipelajari distribusi dan dampak hujan asam terhadap peningkatan kadar Fe dalam air sumur. Monitoring air hujan dilakukan pada 30 menit pertama hujan pada 16 lokasi dari tahun 1999 sampai 2009. Data keasaman air hujan setiap tahun dipetakan menggunakan program sufer 6, selanjutnya dilakukan overlay dan diidentifikasi daerah yang mengalami hujan asam intensitas tinggi secara terus-menerus. Monitoring kadar Fe air sumur dilakukan pada 16 lokasi sumur dari tahun 1999 sampai 2009. Keasaman air diukur menggunakan pH meter elektronik, dan Fe ditentukan dengan metoda o-fenantrolin menggunakan spektrofotometer UV-VIS. Hasil penelitian menunjukkan bahwa daerah yang terus-menerus mengalami hujan asam intensitas tinggi (pH<5,0) terjadi seluas 4 km2. Dalam daerah hujan asam intensitas tinggi ini keasaman air hujan terus meningkat dari tahun 1999-2009. Peningkatan keasaman air hujan  menyebabkan leaching Fe ke dalam air sumur secara nyata (P 0,049, 95%). Kata kunci :  Hujan asam,, leaching, Fe,  air sumur, industri
VALIDASI METODE ANALISIS KADAR AMBROKSOL HIDROKLORIDA DALAM SEDIAAN TABLET CYSTELIS® SECARA KROMATOGRAFI CAIR KINERJA TINGGI Mulyati, Ade Heri; Sutanto, -; Apriyani, Dewi
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Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

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Abstract

Cystelis® tablet is an expectorant medicine which contain 30 mg/tablet of Ambroxol Hydrochloride. To ensure the safety and effectiveness of the medicine must be well controlled especially the analytical methode which used to determined the actived ingredient in the medicine. This analytical methode must resulting the amount of Ambroxol Hydrochloride which can be trusted. The purpose of this research are to test and proof the result of determination Ambroxol Hydrochloride in Cystelis® tablet could be trusted in daily test in laboratorium. Analytical methode  validation is a effort to get and documented proof that the result of test methode can be trusted with some specification. The Parameters of analytical methode validation are precision,  linearity, accuracy, range, selectivity, and stability test (robustness). Analytical methode that used in pharmacy specially High Performance Liquid Chromatography (HPLC), using mobile phase metanol : buffer potassium dyhidrogen phosphate 0,01 M (70:30) pH 6,0 and stationary phase C18 Symmetry (150 mm x 4,6 mm) with particle size 5mm, flow rate 1,0 mL/minute, injection volume 10,0 mL and measured at wavelength 247 nm. Analytical results showed that the placebo did not gived any analytical respons in selectivity test. Accuracy which know as  % recovery showed the average of % recovery 99,31% (98,70 – 100,44%), range between 80%-120%. Linearity at consentration range 70% - 130% with coefficient correlacy (r)  0,99924. The result of precision which is repeatability with average of % RSD 0,25%.  Based on t value and F value on intermediate precision showed that there is no differently result gived by the analytical methode with different analyst and time. Stability test solution and mobile phase composition with % bias £ ± 2% and %RSD £ 2%. Based on the analytical methode validation result the determination of Ambroxol Hydrochloride in Cystelis® tablet with high performace liquid chromatography we can conclude that this analytical methode is valid to implemented in daily inspection at Quality Control laboratory PT. Armoxindo Farma Kata kunci : Validation, Analytical methode, Ambroxol Hydrochloride, HPLC
EFISIENSI DAN EFEKTIFITAS SERTA KINETIKA ELEKTROKOAGULASI PENGOLAHAN LIMBAH SAGU AREN Sutanto, -; Iryani, Ani; Sarahwati, -
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Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

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Abstract

The processing of palm sago into flour produces unsightly brownish wastewater with high COD and TSS values and very low DO. Waste treatment to reduce waste parameter values can be done one of them by electrocoagulation method. This study was conducted to determine the effectiveness of processing sago wastewater by electrocoagulation and decreasing kinetics of TSS and COD. Electrocoagulation batch system was carried out using 5 x 10 cm aluminum electrode, 3 cm electrode distance. Application of voltage variations: 15; 18; and 20 volts with electrocoagulation time variation 15; 30; and 60 minutes. The results showed that the best electrocoagulation at 18 volts and 60 minutes time, namely the efficiency of reducing TSS and COD values respectively 89.17% and 58.28%, and can increase the DO value from 2.5 to 6.8 mg / L The kinetics of decreasing TSS and COD follow the one order with a constant decrease of respectively - 0.012 and -0.013 per minute.Key words: Electrocoagulation, palm sago liquid waste, TSS, COD
Co-Authors Ade Heri Mulyati, Ade Heri Dewi Apriyani, Dewi Iryani, Ani Sarahwati, - Syaiful Anwar Tania June