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Sutanto .
Universitas Pakuan
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Engineering Environmental Science Mathematics Medicine & Pharmacology

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DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING UV-VIS SPECTROPHOTOMETER Uswatun Hasanah; Ade Heri Mulyati; Sutanto .; Diana Widiastuti; Siti Warnasih; Yulian Syahputri; Tri Panji
Journal of Science Innovare Vol 3, No 2 (2020): Journal of Science Innovare
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v3i2.3007

Abstract

The COD (Chemical Oxygen Demand) analysis method based on the Indonesian National Standard (SNI) is a revision of SNI 06-6989.2-2004, Water and wastewater - Part 2: Method of testing for chemical oxygen demand (COD) with closed reflux spectrophotometrically. This SNI uses references from international standard methods, namely Standard Methods for the Examination of Water and Wastewater, 21st Edition, editor of LS Clesceri, AE Greenberg, AD Eaton, APHA, AWWA and WEF, Washington DC, 2005, Methods 5220 D (Closed Reflux, Colorimetric Methods). The purpose of this study was to validate the total method for testing chemical oxygen demand (COD) in water and wastewater with the reduction of Cr2O7 2- spectrophotometrically in the range of COD values of 100 mg / L to 900 mg / L measurements were made at a wavelength of 600 nm. and COD values less than or equal to 90 mg / L measurements were made at a wavelength of 420 nm. The results showed that the method SNI 06-6898.2- 2009  has good validation results including the r results obtained from the calibration curve equation of 0.998, a precision of 1.82%, an accuracy of 98.25% and LOD and LOQ of 12.27 mg / L and 25, 61 mg / L.
DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING SPECTRODIRECT Ade Heri Mulyati; Leny Heliawati; Sutanto .; Uswatun Hasanah; Diana Widiastuti; Siti Warnasih; Yulian Syahputri
Journal of Science Innovare Vol 3, No 2 (2020): Journal of Science Innovare
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v3i2.3006

Abstract

Increased human activities will cause various problems, one of which is water pollution in water sources because it receives a pollution load that exceeds its carrying capacity. In the context of environmental conservation, the government has set quality standards for liquid waste produced by various industries and other activities in a Decree of the State Minister for the Environment. COD (Chemical Oxygen Demand) is one of the most important parameters in wastewater quality standards. This study aims to validate the COD analysis method which refers to COD Thermoreactor System (LOVIBOND brand) at Pakuan University Service Laboratory, to ensure the validity of COD analysis results at Pakuan University Service Laboratory. Spectrodirect COD analysis method provides results that meet the requirements of accuracy, precision, LOD, and LOQ which is quite good. The results of the Coefficient of Variation give good results with a value of 1.8841% indicating the accuracy of the analysis method is good. The accuracy parameter also gives good results and meets the requirements with a% recovery value of 98.70351%. Overall, it can be stated that the spectrodirect analysis method tested is an accurate, precise, simple, and economical method for determining COD levels
PENGOLAHAN LIMBAH CAIR KOSMETIK SECARA ELEKTROKOAGULASI SISTEM BATCH Sutanto .; Kareina Artanti
EKOLOGIA Vol 19, No 2 (2019): EKOLOGIA: JURNAL ILMIAH ILMU DASAR DAN LINGKUNGAN HIDUP
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (567.448 KB) | DOI: 10.33751/ekol.v19i2.1645

Abstract

The success of this electrocoagulation method wastewater treatment is influenced by the voltage density and contact time. A reddish liquid waste treatment from the cosmetics industry has been carried out by batch electrocoagulation system. The research aims to determine the optimum voltage and time density conditions that can be the result of effective cosmetics liquid waste treatment by batch system electrocoagulation method. Reddish cosmetics liquid waste samples were taken from the cosmetics industry and analyzed the parameters of waste water quality including: pH; dissolved oxygen (DO); Chemical Oxygen (COD) requirements for Fe and Al metal content, and then waste treatment is carried out. A total of 0.5 liters of waste samples were carried out by electrocoagulation of a batch system using a one liter volume glass chamber using 1 mm aluminum plate electrodes measuring 5 cm x 10 cm effectively immersed, the distance between the electrodes was 5 cm. Both electrodes were given varying electric voltages: 9; 12; 15; and 20 volts DC and each with time variations: 15; 30; 45; and 60 minutes, the experiment was repeated twice. Electrocoagulation water is analyzed a number of quality parameters according to the initial analysis. The best treatment optimum conditions produce water quality: pH = 9.96; DO = 6.9 mg / L; COD = 280 mg / L (a decrease of 74.19%); TSS = 88 mg / L (a decrease of 86.21%); Fe = 0.31 mg / L (80.38% Fe decrease). The results of this electrocoagulation treatment meet wastewater quality standards according to Permen LH No. 05 of 2014 annex XLVII class II except pH ( 9.0)., And can be discharged by water bodies.
DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING SPECTRODIRECT Ade Heri Mulyati; Leny Heliawati; Sutanto .; Uswatun Hasanah; Diana Widiastuti; Siti Warnasih; Yulian Syahputri
Journal of Science Innovare Vol 3, No 2 (2020): Journal of Science Innovare, Volume 03 Number 02 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v3i2.3006

Abstract

Increased human activities will cause various problems, one of which is water pollution in water sources because it receives a pollution load that exceeds its carrying capacity. In the context of environmental conservation, the government has set quality standards for liquid waste produced by various industries and other activities in a Decree of the State Minister for the Environment. COD (Chemical Oxygen Demand) is one of the most important parameters in wastewater quality standards. This study aims to validate the COD analysis method which refers to COD Thermoreactor System (LOVIBOND brand) at Pakuan University Service Laboratory, to ensure the validity of COD analysis results at Pakuan University Service Laboratory. Spectrodirect COD analysis method provides results that meet the requirements of accuracy, precision, LOD, and LOQ which is quite good. The results of the Coefficient of Variation give good results with a value of 1.8841% indicating the accuracy of the analysis method is good. The accuracy parameter also gives good results and meets the requirements with a% recovery value of 98.70351%. Overall, it can be stated that the spectrodirect analysis method tested is an accurate, precise, simple, and economical method for determining COD levels
DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING UV-VIS SPECTROPHOTOMETER Uswatun Hasanah; Ade Heri Mulyati; Sutanto .; Diana Widiastuti; Siti Warnasih; Yulian Syahputri; Tri Panji
Journal of Science Innovare Vol 3, No 2 (2020): Journal of Science Innovare, Volume 03 Number 02 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v3i2.3007

Abstract

The COD (Chemical Oxygen Demand) analysis method based on the Indonesian National Standard (SNI) is a revision of SNI 06-6989.2-2004, Water and wastewater - Part 2: Method of testing for chemical oxygen demand (COD) with closed reflux spectrophotometrically. This SNI uses references from international standard methods, namely Standard Methods for the Examination of Water and Wastewater, 21st Edition, editor of LS Clesceri, AE Greenberg, AD Eaton, APHA, AWWA and WEF, Washington DC, 2005, Methods 5220 D (Closed Reflux, Colorimetric Methods). The purpose of this study was to validate the total method for testing chemical oxygen demand (COD) in water and wastewater with the reduction of Cr2O7 2- spectrophotometrically in the range of COD values of 100 mg / L to 900 mg / L measurements were made at a wavelength of 600 nm. and COD values less than or equal to 90 mg / L measurements were made at a wavelength of 420 nm. The results showed that the method SNI 06-6898.2- 2009  has good validation results including the r results obtained from the calibration curve equation of 0.998, a precision of 1.82%, an accuracy of 98.25% and LOD and LOQ of 12.27 mg / L and 25, 61 mg / L.
PENGOLAHAN LIMBAH CAIR KOSMETIK SECARA ELEKTROKOAGULASI SISTEM BATCH Sutanto .; Kareina Artanti
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 19, No 2 (2019): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekol.v19i2.1645

Abstract

The success of this electrocoagulation method wastewater treatment is influenced by the voltage density and contact time. A reddish liquid waste treatment from the cosmetics industry has been carried out by batch electrocoagulation system. The research aims to determine the optimum voltage and time density conditions that can be the result of effective cosmetics liquid waste treatment by batch system electrocoagulation method. Reddish cosmetics liquid waste samples were taken from the cosmetics industry and analyzed the parameters of waste water quality including: pH; dissolved oxygen (DO); Chemical Oxygen (COD) requirements for Fe and Al metal content, and then waste treatment is carried out. A total of 0.5 liters of waste samples were carried out by electrocoagulation of a batch system using a one liter volume glass chamber using 1 mm aluminum plate electrodes measuring 5 cm x 10 cm effectively immersed, the distance between the electrodes was 5 cm. Both electrodes were given varying electric voltages: 9; 12; 15; and 20 volts DC and each with time variations: 15; 30; 45; and 60 minutes, the experiment was repeated twice. Electrocoagulation water is analyzed a number of quality parameters according to the initial analysis. The best treatment optimum conditions produce water quality: pH = 9.96; DO = 6.9 mg / L; COD = 280 mg / L (a decrease of 74.19%); TSS = 88 mg / L (a decrease of 86.21%); Fe = 0.31 mg / L (80.38% Fe decrease). The results of this electrocoagulation treatment meet wastewater quality standards according to Permen LH No. 05 of 2014 annex XLVII class II except pH ( 9.0)., And can be discharged by water bodies.
Co-Authors Ade Heri Mulyati Diana Widiastuti Kareina Artanti Leny Heliawati Siti Warnasih Tri Panji Uswatun Hasanah Yulian Syahputri