Global Anaerobic Digestion Market By Feedstock (Organic Waste, Sewage Sludge, Energy Crops, Others), By Product Type (Up-flow Anaerobic Sludge Blanket (UASB), Internal Circulation Reactor (IC Reactor), Expanded Granular Sludge Bed Digestion (EGSB)), By Process (Wet AD, Dry AD), By End-Use (Waste Management and Treatment, Energy Generation, Agriculture, and Others), By Region and Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends, and Forecast 2025-2034