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Olive mill wastes: from wastes to resources

Enaime, Ghizlane, Dababat, Salahaldeen, Wichern, Marc, Lübken, Manfred·2024·Environmental Science and Pollution Research
DOI 10.1007/s11356-024-32468-xPMC PMC10948480
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Abstract

Olive oil extraction has recently experienced a continuous increase due to its related beneficial properties. Consequently, large amounts of olive mill wastes (OMWs) derived from the trituration process are annually produced, causing serious environmental problems. The limited financial capabilities of olive mills make them usually unable to bear the high costs required for the disposal of their wastes. Alternatively, the valorization of OMWs within the framework of the so-called waste-to-resource concept and their recycling can represent a successful strategy for the implementation of circular economy model in the olive industry, which could have significant socioeconomic impacts on low-income Mediterranean countries. There is, however, no unique solution for OMWs valorization, due to the wide variety of the wastes’ composition and their seasonal production. In this review, the potential of OMWs for being reused and the recent technological advances in the field of OMWs valorization are assessed. Special focus is given to the analysis of the advantages and limitations of each technology and to reporting the most significant issues that still limiting its industrial scale-up. The information collected in this review shows that OMW could be effectively exploited in several sectors, including energy production and agriculture. OMWs potential seems, however, undervalued, and the implementation of sustainable valorization strategies in large-scale remains challenging. More efforts and policy actions, through collective actions, encouraging subsidies, and establishing public–private collaborations, are still needed to reconcile research progress with industrial practices and encourage the large-scale implementation of the waste-to-resource concept in the olive sector.

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  • Maize tassels are an abundant agricultural waste product and a promising feedstock for producing activated carbon.

    “Among these, maize tassels, an abundant agricultural waste product, have gained attention as a promising feedstock for producing activated carbon39–41.”

    From Performance of maize tassel activated carbon for COD removal from industrial wastewater under optimized conditions (2025) · cites this paper as [39]

    The wastewater-treatment section discusses producing activated carbon from olive mill wastes, not maize tassels. Searches for “maize tassels activated carbon” and “maize corn tassel agricultural waste feedstock” found no passage addressing maize tassels or their suitability as a feedstock. (LLM, conf=0.75)

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Metadata

Authors
Enaime, G., Dababat, S., Wichern, M., & Lübken, M.
Venue
Environmental Science and Pollution Research
Publisher
Springer Science and Business Media LLC
Published
2024-02-26
Volume
31
Issue
14
Pages
20853-20880
ISSN
1614-7499
DOI
10.1007/s11356-024-32468-x
PMC
PMC10948480
Cited by
129
References
5
Language
en
Licence
Funders
Ruhr-Universität Bochum

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