Table 1 The information and the conditions of the three ozone adsorbents.

From: Evaluation of Ozone Removal by Spent Coffee Grounds

AdsorbentPhysical FormatAmountWater Content
Fresh CoffeePowder100 g1.7% ± 0.3%
(Starbucks, Breakfast Blend Medium Roast)300 g
Spent Coffee GroundsPowder (Brewed then baked at 100°C for 6 hours)100 g96.2% ± 5.2%
(Starbucks, Breakfast Blend Medium Roast)300 g
Activated CarbonPowder100 g7.0% ± 0.6%
(The First Chemical Works, 3 × 4 Mesh)300 g