New Invention Profile
| Publication No: | IN202311058031 [India] | Application No: | IN202311058031 |
| Title: | A BI-PHASIC SOLID-STATE ANAEROBIC DIGESTER SYSTEM FOR THE GENERATION OF BIOGAS WITH 90 % METHANE (BI-ADS 90% CH4) | ||
| Publication Date: | 07-03-2025 | File Date: | 29-08-2023 |
| Inventor(s): | Anupoju Gangagni Rao; Begum Sameena; Juntupally Sudharshan; Arelli Vijayalakshmi; Mamindlapelli Naveen Kumar; Sanjeev Kumar; Lalit Maurya; Pankaj Sinha | ||
| IPC Classification: | C02F 3/00, C02F 11/04, C12M 1/107, C02F 3/34, C12M 45/06, C12M 23/58 | ||
| Abstract: | The present invention provides a bi-phasic AD system encompassing operational process strategies for the generation of biohydrogen, biohythane and biogas with 90 % and above methane from various organic wastes including lignocellulosic biomass. The reactor is designed for auto-generative high pressure solid-state AD of organic wastes for the generation of biogas with more than 90% CH4 by the supplementation of additives (nanoparticles of micro and macro nutrients) at optimum dosages and the usage of bioaugmented acidogenic and methanogenic inoculum. The main advantage of the present invention is the bi-phasic (acidification followed by biomethanation) digestion of organic wastes in a single closed horizontal cylindrical vessel comprising of chambers I and II. In addition to methane rich biogas, the invention is also suitable for the generation of biohydrogen as a product having 80-85% purity from acidification chamber I, while it is also suitable for the generation of biohythane having 15-25% H2 and 75-85% CH4 (withdrawal of mixture of CO2 and H2 from chamber I, while the CO2 and CH4 from chamber II for the production of biohythane) incorporating novel operational strategies. Presence of central duct, cones and perforated plate in chambers I and II ensures the expansion of slurry at the bottom and its upward flow regime facilitating adequate mixing for efficient heat and mass transfer. Enhancement of hydrolysis and acidification by micro-aeration in chamber I through air sparger. Two gravity settling chambers are provided in each chamber to withdraw the acidified slurry into buffer tank and the final digestate into digestate collection tank from chamber I and chamber II respectively. Another novel feature is the passage of product gas from chamber I to chamber II at a controlled flow rate of 0.1 L/min to enhance the conversion of CO2 to CH4. Controlled introduction of H2 and CO2 (4:1 ratio) from chamber I to chamber II using flow control values, continuous monitoring and adjustment of pH using automatic pH sensors and maintenance of temperature by appropriate heating mechanism and its recording is controlled using a programmable logic controller (PLC). |
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Industrial Applications
Biofuel [Fuels and Lubricants]
Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes]
CleanTech [Chemistry, Chemical Processes]
Waste management [Environmental (Clean Tech)]