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FAIR-CT96-1420
Improvements of Treatments and Validation of the Liquid-Solid Waste from the Two-Phase Olive Oil Extraction (IMPROLIVE)
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Contacts
Website:
www.ucm.es/info/improliv/index.htm
Summary Information
To find similar Items, click on a keyword below:
Biological Conversion
:
Composts/Fertilisers
:
Drying/Pretreatment
:
FAIR Area 1.1 - Biomass and Bioenergy Chain
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Liquid Biofuels and Biogas
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Protein/Amino Acid
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Thermochemical Conversion
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Vegetable Oil/Fat
Second Annual Progress Report
Summary
Introduction There is a lack of experience and
information concerning the treatments of alpeorujo, the
solid-liquid waste generated by the new two-phases method of olive oil
extraction. The aim is to develop integrated and multidisciplinary
treatments for the valorisation of alpeorujo that will serve to
minimise the environmental impact, create new markets and support rural
economy and industry.
Objectives
The specific objectives are:
- development of a catalogue and a data-base for processing technical
and economic information
- validation methods to obtain animal feed from alpeorujo by
protein optimisation
- validation of methods of treating alpeorujo by aerobic
bioremediation/composting of liquid/solid phases, obtain plant growth
media
- to improve the recovery of orujo oil and alpeorujo drying to
obtain better oil quality and reduce costs
- validation of treatment methods based on combustion or gasification,
to recover energy and combustible gases
The overall goal is to create a comprehensive package of
treatments for alpeorujo that will be hopefully be the most
efficient, most economical and most feasible for the olive oil industry to
use. Subsequent goals are to define real costs of different alternatives
of treatment and to obtain quantitative criteria for deciding, for
example, what is the best alternative treatment for a given European area.
Activities
The project is multidisciplinary with overall
methodology that integrates several procedures: computerised integration
of data and results, waste water treatments, balanced-protein enrichment,
aerobic bioremediation and nitrogen fixation, extraction by decanter
centrifuge, fluidised bed, spray or similar drying, and
combustion/gasification. The work is divided in 5 tasks and 23 sub-tasks
including the following actions:
- study and assessment of already tested plants (recording treatment
procedures, creating an interactive catalogue/data-base, defining
technical standards, assessing practical waste water treatments)
- enrichment of alpeorujo with fungal/yeast protein and amino
acid production (chemical characterisation of alpeorujo and
protein quality examination, recovery of proteins from alpeorujo,
microbial screening, fermentation of alpeorujo, analysis of
fermented products, amino acid production)
- bioremediation and composting (bacterial isolation and
identification, physiological responses of bacteria in lab-scale,
physiological responses of bacteria in pilot/industrial-scale,
bioremediation of liquid fraction, composting of solid fraction,
promoting plant growth, cultivation of Pleurotus spp in alpeorujo)
- physicochemical treatments (drying in fluidised/moving beds, recovery
of orujo oil and drying of de-oiled pulp, combustion/gasification in
fluidised/moving beds, advanced control/instrumentation)
- evaluation of results and industrial integration (synthesis of
results, industrial standards, assessment and design of industrial
plant)
Progress
The project is adequately on schedule.
- The treatment procedures of already tested plants have been recorded.
The catalogue was completed and the data base has been created.
- The chemical characterisation, isolation and identification of
indigenous microflora of alpeorujo have been completed, the
protein quality has been examined and the microbial screening is
finished, several microbial fermentations of alpeorujo have been
performed.
- The bioremediation and composting are progressing: the bacterial
isolation and identification and physiological responses of bacteria in
lab scale were assessed, the bioremediation of liquid fraction and
composting of solid fraction are in progress.
- The study of the drying of alpeorujo in fluidised/moving beds
was completed, the pilot plant for recovery of orujo oil and drying of
de-oiled pulp was assembled and was already operative in the last two
campaigns' 'several tests of combustion/gasification in fluidiscd/moving
bed were made, the basic control/instrumentation was evaluated and
advanced, industrial grade, prototypes of instrumentation and control
were designed.
Results
The main achievements from the second year of work are
as follows:
- the wastewater treatments have been recorded and assessed
- the database has been implemented and is being filled with real data
from industry and research. The chemical characterisation of alpeorujo
is finished
- the microbial screening of the waste has finished
- microbial solid state fermentation has been performed by the use of
the fungus Paecilomyces variotii isolated from alpeorujo
samples
- bioremediation systems for liquid and solid phases are operative
- the fluid dynamics of the fluidised/moving bed is known
- a plant for de-oiling/drying pulp has been constructed and tested
- a small pilot plant for drying alpeorujo and
combustion/gasification of de-oiled pulp and stones was constructed and
is operative
- basic/advanced control systems have been designed and implemented in
the above plant
- a new monitoring/control prototype, industrial grade, has been
designed
- two Web pages are operative on the Internet
Future activities
The actions planned for the next year are:
- continue the assessment of already tested plants, filling the
interactive database and assessing practical wastewater treatments
- continue the study of the fermentation of alpeorujo and start
the analysis of fermented products as well as the analysis of amino acid
production by the use of a strain of Corynebacterium glutamicum
- continue the study of physiological responses of bacteria in
industrial-scale and test the promoting plant growth
- finish the study of the recovery of orujo oil and drying de-oiled
pulp, complete the study of combustion/gasification in fluidised/moving
beds and advanced control/instrumentation
- make the analysis/synthesis of results and feasibility study of
industrial plants
- hold a workshop for the discussion, assessment and dissemination of
the project results and prepare the final report
