Table 4.

Experimental BOD and COD values

Test materialMean BOD (mg l−1)Mean COD (mg l−1)BOD/COD ratio
Rapeseed ethyl ester1.672.640.63
Rapeseed methyl ester1.532.430.63
Neat rapeseed oil1.743.310.53
Soybean methyl ester1.682.630.64
Neat soybean oil1.572.700.58
Petroleum diesel0.3972.350.17

Data taken from Peterson & Moller (2005). BOD, mean biological oxygen demand (n = 6) for each test material; COD, mean chemical oxygen demand (n = 3) for each test material.