| İngilizce | İspanyolca | |
|---|---|---|
| Physics | ||
| Physics | sludge gas | gas de pantanos |
| Chemistry | ||
| Chemistry | sludge gas | gas de digestión de fangos cloacales |
| Environment | ||
| Environment | sludge gas | gas de cieno |
| Environment | sludge gas | gas de los lodos |
| Energy | ||
| Energy | sludge gas | gas procedente de fangos de aguas residuales |
| Recycling | ||
| Recycling | sludge gas | gas de pantanos |
