Table 7 Energy intensity comparison for removing 0.001056 kg formaldehyde*

From: Evaluating the efficiency of formaldehyde degradation from aqueous environment by sonozone technique

Process

Total energy (kJ)

Energy per kg formaldehyde (kJ/kg)

US (150 W, 32 min, 0.001056 kg formaldehyde)

288

273,000

Ozonation (83 kJ total, 32 min, 0.6 mg/min L, 20% excess, 100 L, 0.00132 kg frmaldehyde)

83

62,879

Sonozone (0.012124 kg formaldehyde)

371

30,601

  1. Water requirement 40 L per day for a family of 4 for drinking and cooking, formaldehyde concentration 330 mg per day, removal efficiencies in the US system 8% and ozonation 10%, amount.
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