Table 3 Mean (n = 3;±SD) concentrations (μg L −1 ) of caffeine in wastewater collected from WWTPs that serve Barbadian communities
From: Caffeine in surface and wastewaters in Barbados, West Indies
Wastewater treatment plants | Caffeine (μg L −1 ) | Efficiency (%) |
|---|---|---|
1: Bridgetown | ||
Influent | 15±1.2 | 99 |
Effluent | 0.1±0.01 | |
2: South Coast | ||
Influent | 43 ±2.9 | 38 |
Effluent | 26 ±1.3 |