Title:
Enhanced Fatty Acid Generation from Meat Processing Dissolved Air Flotation Sludge
Author(s):
Okoro, O.V., Sun, Z., Birch, J.
Document(s):
Paper
Slide presentation
Abstract:
The hydroesterification process is a two-stage biodiesel production process that integrates a hydrolysis step and an esterification step to circumvent the challenges of the high free fatty acid content and high moisture content of low-grade lipid sources. These challenges limit the feasibility of such low grade lipid sources as the feedstock for biodiesel production via the conventional alkaline catalysed transesterification process, due to unwanted saponification side reactions. The esterification step is normally completed efficiently. However, the high temperature and high pressure operating conditions and the concentrated mineral acid catalyst utilised in the initial hydrolysis step constitute major concerns, because a large mass of superheated steam, high pressure pumping systems, and expensive corrosion resistant equipment are required. This study therefore investigated the feasibility of an in-situ lipid hydrolysis of meat processing dissolved air flotation sludge to generate fatty acids. This in-situ lipid hydrolysis process was catalysed using a polystyrene sulphonic microporous resin to enhance fatty acid generation. Such an in-situ approach will enable the invention of a single step lipid extraction and lipid hydrolysis process that will bypass the need for preliminary drying and lipid extraction operations, with the lipid hydrolysis achieved under moderate conditions.
Keywords:
meat processing dissolved air flotation sludge, in-situ lipid hydrolysis, polystyrene sulphonic microporous resin, fatty acid generation
Topic:
Biomass Resources
Subtopic:
Municipal and Industrial Wastes
Event:
25th European Biomass Conference and Exhibition
Session:
1BO.1.3
Pages:
85 - 89
ISBN:
978-88-89407-17-2
Paper DOI:
10.5071/25thEUBCE2017-1BO.1.3
Price:
FREE
