Added-value processing of ‘algae waste' 1st report

Trzcinski, Antoine and Hernandez, Erbesto and Webb, Colin (2009) Added-value processing of ‘algae waste' 1st report. Project Report. University of Manchester , United Kingdom. [Report]


This first report provides information and preliminary results for a two year study being conducted at the Satake Centre for Grain Process Engineering in the University of Manchester, investigating the feasibility of producing value-added products from algae wastes. The waste material under investigation is the residue, following lipid extraction, of micro-algae and the results presented in this report were obtained with a residue received from Shell on the 10th September 2009. The initial phase of the study has been used to characterise this algae residue and to explore its suitability for supporting the growth of a number of different microorganisms. Several starch consuming bacteria have been isolated directly from the algae waste and it was shown that these Bacillus-like bacteria were able to grow on the carbohydrates and FAN from the algae waste. The pH drop observed during tests with pure starch and the algae waste suggests that they can produce an acid or a mixture of acids. Both target filamentous fungi have been grown successfully on the residue without the need for any nutrient additives. A pH adjustment step was required for A. awamori which was not the case with previous algae waste sent by Shell. Also, the free amino nitrogen content of the A. oryzae fermentation was low compared to previous feedstocks. Preliminary design calculations are underway and various schemes are being considered for the possibility of utilising the residual solids to produce potentially valuable by-products, using a microbial bioconversion strategy.

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Item Type: Report (Project Report)
Item Status: Live Archive
Additional Information: Confidential.
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Date Deposited: 10 Jul 2018 02:24
Last Modified: 16 Jul 2018 01:36
Fields of Research : 10 Technology > 1003 Industrial Biotechnology > 100302 Bioprocessing, Bioproduction and Bioproducts
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology

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