Decay 0.0 / 5 ? BiologyEcology and Environmental ScienceGCSEAQA Created by: Cat91Created on: 12-06-18 18:05 How do microorganisms get energy? They break down plant and animal material. 1 of 18 What are the factors affecting decay? Temperature, oxygen availability, water availability and, number of decay organisms. 2 of 18 What does temp have to do with decay? Enzymes can break down things faster when it's warmer. 3 of 18 What does O2 have to do with decay? Cause microorganisms need to breathe. 4 of 18 What does water have to do with decay? It's needed for certain biological processes. 5 of 18 What does the amount of decay organisms have to do with decay? Well, the more the faster. 6 of 18 What is biogas made by? Anaerobic decay of waste material. 7 of 18 What is biogas made from? Methane. 8 of 18 What does anaerobically mean? Without O2. 9 of 18 What can be used to make biogas on a large scale? Sewage and sugar factories. 10 of 18 What is biogas made in? A simple fermenter called a digester or generator. 11 of 18 Do biogas generators need to be kept at a constant temp? Yes. 12 of 18 Why can't biogases be stored as a liquid? Because they need to high a pressure. 13 of 18 When does biogas have to be used? Straight away. 14 of 18 What are the 2 types of biogas generators? Batch and continuous. 15 of 18 What are biogas batch generators? They're manually loaded up with waste then they make a batch of biogas before having to be cleaned. 16 of 18 What are continuous biogas generators? They make biomass all the time and waste is continuously fed in. 17 of 18 What are the three things that a biogas generator needs? An inlet for waste material to be put in, an outlet for the digested material to be removed through and, an outlet for the biogas. 18 of 18
Comments
No comments have yet been made