DEVELOPMENT OF COD (CHEMICAL OXYGEN DEMAND) ANALYSIS METHOD IN WASTE WATER USING UV-VIS SPECTROPHOTOMETER

2020 ◽  
Vol 3 (2) ◽  
pp. 35-38
Author(s):  
Uswatun Hasanah ◽  
Ade Heri Mulyati ◽  
Sutanto . ◽  
Diana Widiastuti ◽  
Siti Warnasih ◽  
...  
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Demand Analysis ◽  
National Standard ◽  
Washington Dc ◽  
Analysis Method ◽  
Standard Methods ◽  
Water And Wastewater ◽  
Curve Equation ◽  
Colorimetric Methods

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.

scholarly journals The chloride ion to the chemical oxygen demand (COD) analysis of the influence of different analysis method

2021 ◽  
Vol 236 ◽  
pp. 02034
Author(s):  
Yan Zhao ◽  
Hong Tang ◽  
Xiaoyan Ge ◽  
Yongyu Li ◽  
Shihua Wang
Keyword(s):  
Environmental Monitoring ◽  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Chloride Ion ◽  
Difficult Problem ◽  
Demand Analysis ◽  
Analysis Method ◽  
Huge Impact ◽  
Chlorine Ion ◽  
Influence Degree

Research shows that chloride ion in the process of chemical oxygen demand (COD) analysis has a huge impact on the results of the analysis, How to improve the accuracy of chemical oxygen demand analysis results in the presence of chlorine ion interference is a difficult problem in current environmental monitoring work, This article introduces the chlorine ion in different analysis method to analysis the influence degree of the chemical oxygen demand (COD).

Incomplete Oxidation of Ethylenediaminetetraacetic Acid in Chemical Oxygen Demand Analysis

2007 ◽  
Vol 79 (9) ◽  
pp. 1043-1049 ◽  
Author(s):  
James E. Anderson ◽  
Sherry A. Mueller ◽  
Byung R. Kim
Keyword(s):  
Chemical Oxygen Demand ◽  
Ethylenediaminetetraacetic Acid ◽  
Oxygen Demand ◽  
Demand Analysis ◽  
Incomplete Oxidation

scholarly journals Evaluation Methods of Water Environment Safety and Their Application to the Three Northeast Provinces of China

2019 ◽  
Vol 11 (18) ◽  
pp. 5135 ◽  
Author(s):  
Li ◽  
Sun ◽  
Yuan ◽  
Liu
Keyword(s):  
Principal Component Analysis ◽  
Water Resources ◽  
Chemical Oxygen Demand ◽  
Water Environment ◽  
Oxygen Demand ◽  
Principal Component ◽  
Component Analysis ◽  
Analysis Method ◽  
Industry Output ◽  
Per Capita

Focusing on the topic of water environment safety of China, this paper has selected the three northeast provinces of China as the research object due to their representativeness in economic development and resource security. By using the Entropy Weight Method, the Grey Correlation Analysis Method, and the Principal Component Analysis Method, this paper has first constructed a water environment safety evaluation system with 17 indicators from the economic, environmental, and ecological aspects. Furthermore, this paper has screened the initially selected indicators by the Principal Component Analysis Method and finally determined 11 indicators as the evaluation indicators. After indicator screening, this paper has adopted the improved Fuzzy Comprehensive Evaluation Method to evaluate the water environment safety of the three northeast provinces of China and obtained the change in water environment safety of different provinces from 2009 to 2017. The results show that the overall water environment safety of the region had improved first but worsened afterward, and that in terms of water safety level, Jilin Province ranked first, followed by Heilongjiang Province and Liaoning Province. The three factors that have the greatest impact on the water environment safety of the three provinces are: Liaoning—Chemical Oxygen Demand (score: 17.10), Per Capita Disposable Income (score: 13.50), and Secondary Industry Output (score: 11.50); Heilongjiang—Chemical Oxygen Demand (score: 18.64), Per Capita Water Resources (score: 12.75), and Concentration of Inhalable Particles (score: 10.89); Jilin—Per Capita Water Resources (score: 15.75), Chemical Oxygen Demand (score: 14.87), and Service Industry Output (score: 11.55). Based on analysis of the evaluation results, this paper has proposed corresponding policy recommendations to improve the water environment safety and promote sustainable development in the northeast provinces of China.

scholarly journals THE EFFICIENCY OF CHARCOAL AS A FILTER MEDIA IN NON-VEGETATION CONSTRUCTED WETLAND SUBSURFACE-FLOW SYSTEM (SF) FOR AMMONIA, CHEMICAL OXYGEN DEMAND, AND IRON TREATMENT OF LANDFILL LEACHATES

2010 ◽  
Vol 3 (3) ◽  
pp. 135-140
Author(s):  
Ahmad Md. Noor ◽  
Pedy Artsanti ◽  
P.E. Lim ◽  
S. Suryani ◽  
H.P.S Abdul Khalil
Keyword(s):  
Chemical Oxygen Demand ◽  
Flow System ◽  
Oxygen Demand ◽  
Filter Media ◽  
Landfill Leachates ◽  
Standard Methods ◽  
Iron Treatment ◽  
Overall Performance ◽  
Set Up ◽  
Better Than

The thermal Charcoal for domestic used was crushed into powder and mixed with gravel. Four reactors of different proportion and size of charcoal and gravel were set up without vegetation. Sample of landfill leachates obtained from site of Pulau Burung Landfill, Penang, was introduced into the reactors. Ammonia, chemical oxygen demand (COD), and iron of inlet and outlet from four reactors were analyzed by standard methods. Result shows that overall performance of removing ammonia and iron were much better than COD.   Keywords: charcoal, leachate, filter media

A low-cost sensor based on silver nanoparticles for determining chemical oxygen demand in wastewater via image processing analysis

2019 ◽  
Vol 11 (43) ◽  
pp. 5577-5583
Author(s):  
Eryka Thamyris Damascena Nóbrega ◽  
Iagê Terra Guedes de Oliveira ◽  
Anderson Dias Viana ◽  
Luiz Henrique da Silva Gasparotto ◽  
Edgar Perin Moraes
Keyword(s):  
Image Processing ◽  
Silver Nanoparticles ◽  
Chemical Oxygen Demand ◽  
Low Cost ◽  
Oxygen Demand ◽  
Quality Parameter ◽  
Inorganic Pollutants ◽  
Water And Wastewater

Chemical Oxygen Demand (COD) is a quality parameter of superficial water and wastewater that provides information on chemically degradable fractions of organic (and inorganic) pollutants.

Sign in / Sign up

Export Citation Format

Share Document