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Recycling 2019 & Material Science 2019
July 22-23, 2019
Volume 3
Journal of Environmental Geology
Material Science and Nanotechnology
Global Recycling Summit
July 22-23, 2019 | Rome, Italy
6
th
International Conference on
&
A proposal for the sustainable treatment and valorisation of olive mill wastes
Hafsa Annab
1
, Azzouz Essamri
1
, Nuria Fiol
2
and
Isabel Villaescusa
2
1
University campus, Morocco
2
University of Girona, Spain
O
live mill technology generates a considerable amount of both solid (olive pomace OP) and liquid by-products (olive mill
wastewater OMWW) during olives milling season, usually between November and March. These wastes represent a great
challenge for olive oil producers since they must find technical, environmental and economic solutions to manage these by-
products. The aim of this work was to explore and propose a complete cycle of olive mill wastes treatment. Two sorbents based
on olive pomace chemical activation, granular (GAC) and powdered (PAC) activated carbons were successfully synthetized and
encapsulated in calcium alginate. The obtained gel beads (GAC-B and PAC-B) were tested as sorbents for gallic acid adsorption.
Both sorbents showed great potential for gallic acid sorption; although PAC-B beads resulted to be the most efficient. The major
efficiency presented by PAC-B beads for gallic acid removal was attributed to the basic character and high porosity of PAC. In
view of an industrial application, PAC-B beads were used to treat OMWWwith the aim to adsorb polyphenols from the effluent,
and, at time, to reduce the contamination of so strongly polyphenols loaded effluents. The outcomes of this study attest proofs of
great potential of PAC-AC beads for polyphenols removal. Briefly, this paper suggests a proposal for sustainable treatment and
valorization of both olive mill wastewater and olive pomace, as they can be recycled and reused for own benefit of the industry.
JEnvironGeol. |Volume3
ISSN:2591-7641