1. Combustion:

* How it works: Burning biomass (wood, crops, waste) directly releases its chemical energy as heat and light.

* Applications: Used for electricity generation in power plants, heating homes and businesses, and as a fuel source for cooking and industrial processes.

* Pros: Relatively simple technology, readily available fuel source, can reduce reliance on fossil fuels.

* Cons: Can produce air pollution (particulates, carbon dioxide, NOx), requires land for biomass cultivation, potentially unsustainable if not managed responsibly.

2. Anaerobic Digestion:

* How it works: Microorganisms break down organic matter (biomass) in the absence of oxygen, producing biogas (primarily methane) and digestate.

* Applications: Biogas can be used for electricity generation, heating, and transportation fuel. Digestate can be used as a fertilizer.

* Pros: More environmentally friendly than combustion, can be used for waste management, generates renewable energy, can be used in smaller, decentralized systems.

* Cons: Requires specialized equipment, can produce greenhouse gases if not properly managed, biogas production can be seasonal.

Let me know if you'd like more detail on any of these methods!