Hello, i have an experiment that require me to prepare synthetic wastewater with COD content. I did try to search online but i cannot find or missed the recipe that for COD only.I just need a recipe that can come out with COD synthetic wastewater regardless the type of wastewater. The main thing is COD content in synthetic wastewater
I suggest you the following interesting link
http://zelalabwork.blogspot.com/2013/03/synthetic-wastewater-preparation.html
With my best regards
Synthetic Wastewater Preparation
1. Prepare the stock solution below
STOCK 1
1731.7 mg/L NaNO3
STOCK 2
44.37 mg/L K2HPO3
967.96 mg/L KHCO3
707.30 mg/L K2CO3
714.36 mg/L NaHCO3
STOCK 3
317.85 mg/L MgCl2.6H2O
160.73 mg/L MgSO4.7H2O
STOCK 4
319.26 mg/L CaCl2
STOCK 5 – Trace Metal
7940 mg/L FeSO4.7H2O
525.9 mg/L MnCl2.4H2O
67.9 mg/L CuSO4.5H2O
247.6 mg/L CrCl3.6H2O
13.1 mg/L CdCl.H2O
186.3 mg/L NiCl2.6H2O
124.2 mg/L PbCl2
459.4 mg/L Al2(SO4)3.16H2O
15.7 mg/L Na2MoO4.2H2O
2. To approximately 900ml of H2O add 10 ml of Stock 1 to 4 and 1ml Stock 5 in the order specified while stirring continuously.
3. Bring total volume to 1L with H2O.
4. Adjust the pH to 8.45 using Acetic Acid/ NaOH to avoid precipitation.
5. Cover and autoclave.
If you are dealing with COD only, I will suggest to use glucose solution.
C6H12O6 + 6 O2 = 6 CO2 + 6 H2O
Oxygen demand
6O2 = 6*32 =192
C6H12O6 = 72 + 12 + 96 = 180
192/180 = 1.06/ Glucose
If you add 500 mg of Glucose
Theoretical COD will be 500 * 1.06
= 530
The same can be used for BOD also.
Thank you so much for the kind answer.
Dear Nafees Mohammad ,
Is it possible if i use saccharose (table sugar) to replace glucose?
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