Assignors: California Safe Soil, LLC Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Assignors: California Safe Soil, LLC, REDF-ORGANIC RECOVERY, LLC Assigned to WESTERN ALLIANCE BANK reassignment WESTERN ALLIANCE BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US1553107P priority Critical Priority to US12/338,446 priority patent/US20090162923A1/en Priority to US14/329,512 priority patent/US10252950B2/en Application filed by REDF-ORGANIC RECOVERY LLC filed Critical REDF-ORGANIC RECOVERY LLC Priority to US14/805,199 priority patent/US9388088B2/en Publication of US20150321968A1 publication Critical patent/US20150321968A1/en Application granted granted Critical Publication of US9388088B2 publication Critical patent/US9388088B2/en Assigned to California Safe Soil, LLC reassignment California Safe Soil, LLC MERGER AND CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Original Assignee REDF-ORGANIC RECOVERY LLC Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Spencer Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number US14/805,199 Other versions US20150321968A1 Google Patents Methods and compositions for digestion of organic wasteĭownload PDF Info Publication number US9388088B2 US9388088B2 US14/805,199 US201514805199A US9388088B2 US 9388088 B2 US9388088 B2 US 9388088B2 US 201514805199 A US201514805199 A US 201514805199A US 9388088 B2 US9388088 B2 US 9388088B2 Authority US United States Prior art keywords organic waste waste fresh food enzymes hydrolysate Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US9388088B2 - Methods and compositions for digestion of organic waste Consequently, it was found that co-digestion of WWS with BSY can improve biomethane production and that brewer’s waste yeast could mitigate some of the limitations associated with mono-digestion of sewage sludge.US9388088B2 - Methods and compositions for digestion of organic waste From the study, it was found that the optimum co-fermentation ratio was 1:2 of WWS: BSY with the highest biomethane production of 338.2 NmL CH4/g VS. In addition, the methanogenic potential was determined based on the biomethane potential (BMP) using the AMPTS 11 test. They were measured by the standard method. The co-fermented samples with different loading ratios of 1:1, 1:2 and 2:1 were characterised in terms of C/N ratio, total solids (TS), volatile solids (VS), moisture content and pH. Therefore, this study investigates the proportion of co-substrate that can optimise biogas yield. However, the feedstock and co-digestion ratio need to be understood and carefully selected because they can affect the optimal methane production. To improve the quality and quantity of biogas, co-digestion is often used, leading to an increase in the economics of AD. However, mono-digestion of sewage sludge often yields only a small amount of biomethane. AD offers the possibility to produce biogas and digestate from sewage sludge, resulting in a reduction in sludge volume and disposal costs. Due to increased energy prices, brewer’s yeast has attracted great interest as an energy substrate, despite its difficult degradability under anaerobic conditions. In the brewing industry, a significant proportion of the raw materials used also end up as secondary raw materials or waste. It has also been recognised as a pollutant, albeit one with energy potential. In the treatment of municipal wastewater, the disposal of sewage sludge is a problem of growing importance, as it contributes significantly to the operating costs of a wastewater treatment plant. Anaerobic digestion (AD) is one of the most widely used technologies in the world for converting solid organic waste into energy and other value-added products.
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