| By this means the straw is softened and reduced in bulk, so that a larger quantity can be added before the digester is quite full. |
| There should also be a small tube or hole covered with a weighted valve to prevent the danger of bursting the digester. |
| However, if the digester solution is too basic, then the acetogenic bacteria population is too low. |
| The wood chips are placed in the digester and are cooked in a highly corrosive alkaline solution. |
| The waste will be run through a methane digester, a tank in which bacteria break down the feces to create methane. |
| The rest of the rubbish is placed onto a conveyer belt, urea is added and it is taken to the digester. |
