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Hrameche O, Tul S, Manolikaki I, Digalaki N, Kaltsa I, Psarras G, Koubouris G. Optimizing Agroecological Measures for Climate-Resilient Olive Farming in the Mediterranean. PLANTS (BASEL, SWITZERLAND) 2024; 13:900. [PMID: 38592939 PMCID: PMC10974610 DOI: 10.3390/plants13060900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 03/10/2024] [Accepted: 03/18/2024] [Indexed: 04/11/2024]
Abstract
In order to evaluate the potential of climate change mitigation measures on soil physiochemical properties, an experiment based on the application of five agroecological practices such as the addition of composted olive-mill wastes, recycling pruning residue, cover crops, organic insect manure, and reduced soil tillage, solely or combined, was conducted over two years (2020 to 2022) in a 48-year-old olive plantation. The results showed significant increases in soil water content during the spring and summer periods for the combined treatment (compost + pruning residue + cover crops) (ALL) compared to the control (CONT) by 41.6% and 51.3%, respectively. Also, ALL expressed the highest soil organic matter (4.33%) compared to CONT (1.65%) at 0-10 cm soil depth. When comparing soil nutrient contents, ALL (37.86 mg kg-1) and cover crops (COVER) (37.21 mg kg-1) had significant increases in soil nitrate compared to CONT (22.90 mg kg-1), the lowest one. Concerning exchangeable potassium, ALL (169.7 mg kg-1) and compost (COMP) (168.7 mg kg-1) were higher than CONT (117.93 mg kg-1) at the 0-10 cm soil depth and had, respectively an increase of 100.9% and 60.7% in calcium content compared to CONT. Over the experimental period, the implementation of the five agroecological management practices resulted in enhanced soil fertility. In a long-term Mediterranean context, this study suggests that these sustainable practices would significantly benefit farmers by improving agroecosystem services, reducing reliance on synthetic fertilizers, optimizing irrigation water use, and ultimately contributing towards a circular economy.
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Affiliation(s)
- Oumaima Hrameche
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
- Mediterranean Agronomic Institute of Chania—MAICh, CIHEAM, Makedonias 01, GR-73100 Chania, Greece
| | - Safiye Tul
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
- Mediterranean Agronomic Institute of Chania—MAICh, CIHEAM, Makedonias 01, GR-73100 Chania, Greece
| | - Ioanna Manolikaki
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
| | - Nektaria Digalaki
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
| | - Ioanna Kaltsa
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
| | - Georgios Psarras
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
| | - Georgios Koubouris
- Hellenic Agricultural Organization ELGO-DIMITRA, Institute of Olive Tree, Subtropical Crops and Viticulture, Leoforos Karamanli 167, GR-73100 Chania, Greece; (O.H.); (S.T.); (I.M.); (N.D.); (I.K.); (G.P.)
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Bouhia Y, Hafidi M, Ouhdouch Y, Lyamlouli K. Olive mill waste sludge: From permanent pollution to a highly beneficial organic biofertilizer: A critical review and future perspectives. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 259:114997. [PMID: 37210993 DOI: 10.1016/j.ecoenv.2023.114997] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/21/2023] [Accepted: 05/06/2023] [Indexed: 05/23/2023]
Abstract
Olive mill wastewater sludge (OMWS) is a by-product of the olive extraction process that is attracting substantial attention due to its extremely hazardous effects on aquatic and terrestrial ecosystems. OMWS is a product of the common disposal method of olive oil mill wastewater (OMWW) that accumulates in evaporation ponds. It is estimated that approximately 10 × 106 m3 of OMWS is generated worldwide each year. OMWS is characterized by its significantly variable physicochemical properties and organic pollutant constituents, such as phenols and lipids, which are dependent upon the environmental features of the receiving ponds. Nonetheless, many related studies have recognized the biofertilizer potential of this sludge owing to its high mineral nutrient and organic matter load. OMWS exhibits promising valorization potential in several fields, including agriculture and energy production. Compared to those of OMWW, studies of OMWS are still lacking concerning its composition and characteristics, which are necessary for the future implementation of efficient valorization strategies. The main purpose of this review paper is to fill the gap that exists in the literature by providing a critical analysis of the available data on OMWS production, distribution, characteristics, and properties. Additionally, this work sheds light on important factors affecting OMWS properties, including the variability of the indigenous microbial communities regarding bioremediation. Finally, this review addresses the current and future valorization routes, from detoxification to the development of promising applications in agriculture, energy, and the environment, which could have significant socioeconomic implications for low-income Mediterranean countries.
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Affiliation(s)
- Youness Bouhia
- Faculty of Sciences Semlalia, Laboratory of Microbial Biotechnology, AgroSciences and Environment, labeled Research Unit CNRST N°4 Cadi Ayyad University, Marrakesh 40000, Morocco; AgroBioSciences Program, Mohammed 6 Polytechnic University UM6P, Benguerir 43150, Morocco.
| | - Mohamed Hafidi
- Faculty of Sciences Semlalia, Laboratory of Microbial Biotechnology, AgroSciences and Environment, labeled Research Unit CNRST N°4 Cadi Ayyad University, Marrakesh 40000, Morocco; AgroBioSciences Program, Mohammed 6 Polytechnic University UM6P, Benguerir 43150, Morocco
| | - Yedir Ouhdouch
- Faculty of Sciences Semlalia, Laboratory of Microbial Biotechnology, AgroSciences and Environment, labeled Research Unit CNRST N°4 Cadi Ayyad University, Marrakesh 40000, Morocco; AgroBioSciences Program, Mohammed 6 Polytechnic University UM6P, Benguerir 43150, Morocco
| | - Karim Lyamlouli
- AgroBioSciences Program, Mohammed 6 Polytechnic University UM6P, Benguerir 43150, Morocco
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3
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Martínez-Gallardo MR, López MJ, López-González JA, Jurado MM, Suárez-Estrella F, Pérez-Murcia MD, Sáez JA, Moral R, Moreno J. Microbial communities of the olive mill wastewater sludge stored in evaporation ponds: The resource for sustainable bioremediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111810. [PMID: 33341726 DOI: 10.1016/j.jenvman.2020.111810] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/11/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
Olive Mill Wastewater (OMW) is a polluting residue from the olive oil industry. It is usually stored in open-air unprotected evaporation ponds where their sediments accumulate. This study compares the characteristics of OMW sludges stored for long-time in evaporation ponds and assesses their impact on the underlying soil layer. Physicochemical parameters, toxicity bioassays, and full characterization of the microbial community were analyzed. The extension of the polluting effects was assessed by analysis of toxicity, microbial biomass carbon, and respiration. Geostatistics was used to predict their spatial distribution. Organic matter and polyphenol content besides toxicity levels determine variations between OMW sludges and have a high impact on the microbiota they contain. The microbial community was abundant, diverse, and functionally active. However, the biodegradability of the sludges was hindered by the toxicity levels. Toxicity and biomass carbon were higher on the surface of the ponds than in the soil layer revealing a reduced leach flow and depletion of contaminants. The natural microbiota might be biostimulated by means of applying sustainable and feasible biological treatments in order to favor the OMW sludges bioremediation. These results open up the possibility of solving the environmental concern caused by its storage in similar scenarios, which are common in olive oil-producing countries.
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Affiliation(s)
- María R Martínez-Gallardo
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - María J López
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain.
| | - Juan A López-González
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - Macarena M Jurado
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - Francisca Suárez-Estrella
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
| | - María D Pérez-Murcia
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - José A Sáez
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - Raúl Moral
- Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, Ctra. Beniel Km 3.2, 03312, Orihuela, Alicante, Spain
| | - Joaquín Moreno
- Unit of Microbiology, Department of Biology and Geology, CITE II-B, Agrifood Campus of International Excellence CeiA3, CIAIMBITAL, University of Almeria, 04120, Almeria, Spain
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Enaime G, Baçaoui A, Yaacoubi A, Berzio S, Wichern M, Lübken M. Packed-bed biofilm reactor for semi-continuous anaerobic digestion of olive mill wastewater: performances and COD mass balance analysis. ENVIRONMENTAL TECHNOLOGY 2020; 41:2657-2669. [PMID: 30724702 DOI: 10.1080/09593330.2019.1578830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 01/31/2019] [Indexed: 06/09/2023]
Abstract
In the present study, the treatability of olive mill wastewater (OMWW) using an anaerobic fixed bed biofilm reactor packed with granular activated carbon (GAC) and inoculated with non-acclimated biomass was performed in a semi-continuous mode under mesophilic conditions. Three organic loading rates (OLR) varied from 0.94 to 2.81 g COD/(L d) were applied. The results of batch adsorption tests on GAC and the experimental data from PBBR-GAC operation were used to set up a COD mass balance in order to investigate the effect of adsorption on the COD removal during the three anaerobic treatment steps. Despite the slight accumulation of volatile fatty acids (VFAs) during the second and the third steps, between 735 and 1135 mg COD/L (as acetic acid), a stable environment for methanogens was maintained for a period of 104 days. During the three steps, degradation levels were up to 80% of COD and 85% of phenolic compounds. An averaged specific biogas production of 1.77 LN/d and a methane (CH4) concentration of about 60%, corresponding to a CH4 yield of 0.31 L CH4produced/g CODdepleted, were reached at an OLR of 2.81 g COD/(L d). The results show that the COD mass balance was not closed during the first two steps, while in the third step, it could be around 96%. This finding suggests that the adsorption of organic substances on activated carbon occur just during the two first steps, while at 2.81 g COD/(L d) OLR no adsorption is occurring and the introduced COD becomes completely available for CH4 production.
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Affiliation(s)
- Ghizlane Enaime
- Laboratory of Applied Chemistry, Unity of Methodology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Abdelaziz Baçaoui
- Laboratory of Applied Chemistry, Unity of Methodology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Abdelrani Yaacoubi
- Laboratory of Applied Chemistry, Unity of Methodology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Stephan Berzio
- Institute of Urban Water Management and Environmental Engineering, Ruhr-Universität Bochum, Bochum, Germany
| | - Marc Wichern
- Institute of Urban Water Management and Environmental Engineering, Ruhr-Universität Bochum, Bochum, Germany
| | - Manfred Lübken
- Institute of Urban Water Management and Environmental Engineering, Ruhr-Universität Bochum, Bochum, Germany
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5
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Messineo A, Maniscalco MP, Volpe R. Biomethane recovery from olive mill residues through anaerobic digestion: A review of the state of the art technology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135508. [PMID: 31761373 DOI: 10.1016/j.scitotenv.2019.135508] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Residues from production of olive oil are generated yearly in great amounts, both in liquid and solid forms. Different waste treatment systems were proposed in literature, to minimize environmental pollution while raising the energy recovery. Anaerobic digestion is one of the available routes to recover energy from waste via production of biogas while reducing organic load and pollutants to the environment. The use of farming and agro industrial wastes as co-substrate in anaerobic digestion can induce benefits related to the simultaneous treatment of different wastes. In particular, co-digestion can significantly enhance the process stability as well as the bio-methane generation. This work aims at reviewing the latest achievements in anaerobic digestion of olive mill residues, focusing on the aspects that can mostly favor the process, principally from a technical but also from an economical point of view. For the mono-digestion processes, methane yields up to 419 LCH4 kgVS-1 were reported for olive mill wastewaters (Calabrò et al. 2018), while a production of 740 LCH4 kgVS-1 was achieved when digesting olive mill solid waste together with olive mill wastewater and milk whey (Battista et al. 2015). An increase up to 143% in the methane yield was also reported when the feedstock was subjected to a 5 days aeration before digesting it in a semi-continuous stirred tank reactor (González-González and Cuadros 2015).
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Affiliation(s)
- Antonio Messineo
- Faculty of Engineering and Architecture, Kore University of Enna, Cittadella Universitaria, Enna, Italy.
| | | | - Roberto Volpe
- School of Engineering and Materials Science, Queen Mary University, London, United Kingdom
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6
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Enaime G, Baçaoui A, Yaacoubi A, Wichern M, Lübken M. Olive mill wastewater pretreatment by combination of filtration on olive stone filters and coagulation-flocculation. ENVIRONMENTAL TECHNOLOGY 2019; 40:2135-2146. [PMID: 29421956 DOI: 10.1080/09593330.2018.1439106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
In the present study a new combined process, comprising filtration of raw olive mill wastewater (OMWW) on two successive olive stone (OS) filters followed by a coagulation-flocculation, was developed in order to perform an efficient pretreatment of OMWW. The results show that the use of OS filter leads to a higher removal of total suspended solids (TSS) and fatty matter (FM) from the raw OMWW (about 82.5% and 73.8%, respectively) and a depletion of total phenolic compounds (TP) and chemical oxygen demand (COD) (11.3% and 23.2%, respectively). The coagulation-flocculation was then applied to improve the removal of TP and COD from the filtered OMWW. For this purpose, a full-factorial design was used to study the effect of different factors involved in coagulation-flocculation. The studied variables were: pH (5-8), coagulant type (ferric chloride; FC and aluminum sulfate; AS), coagulant concentration (250-1000 mg/L) and flocculant (Anionique polyelectrolyte Superfloc A120 PWG) concentration (1-5 mg/L). The results reveal that the use of 250 mg/L FC and 5 mg/L flocculant at an acid pH (around 5) allows for, respectively, a removal of TP and COD of about 10.8% and 31.3%.
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Affiliation(s)
- Ghizlane Enaime
- a Laboratory of Applied Chemistry, Unity of Methodology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University , Marrakech , Morocco
| | - Abdelaziz Baçaoui
- a Laboratory of Applied Chemistry, Unity of Methodology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University , Marrakech , Morocco
| | - Abdelrani Yaacoubi
- a Laboratory of Applied Chemistry, Unity of Methodology and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University , Marrakech , Morocco
| | - Marc Wichern
- b Institute of Urban Water Management and Environmental Engineering, Ruhr-Universität Bochum , Bochum , Germany
| | - Manfred Lübken
- b Institute of Urban Water Management and Environmental Engineering, Ruhr-Universität Bochum , Bochum , Germany
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7
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Sanches S, Fraga MC, Silva NA, Nunes P, Crespo JG, Pereira VJ. Pilot scale nanofiltration treatment of olive mill wastewater: a technical and economical evaluation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:3506-3518. [PMID: 27878484 DOI: 10.1007/s11356-016-8083-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/08/2016] [Indexed: 06/06/2023]
Abstract
The treatment of large volumes of olive mill wastewater is presently a challenge. This study reports the technical and economical feasibility of a sequential treatment of olive mill wastewater comprising a dissolved air flotation pre-treatment and nanofiltration. Different pilot nanofiltration assays were conducted in a concentration mode up to different volume reduction factors (29, 45, 58, and 81). Data attained demonstrated that nanofiltration can be operated at considerably high volume reduction factors and still be effective towards the removal of several components. A flux decline of approximately 50% was observed at the highest volume reduction factor, mainly due to increase of the osmotic pressure. Considerably high rejections were obtained across all experiments for total suspended solids (83 to >99%), total organic carbon (64 to 99%), chemical oxygen demand (53 to 77%), and oil and grease (67 to >82%). Treated water was in compliance with European legal limits for discharge regarding total suspended solids and oil and grease. The potential recovery of phenolic compounds was evaluated and found not relevant. It was demonstrated that nanofiltration is economically feasible, involving operation costs of approximately 2.56-3.08 €/m3, depending on the working plan schedule and volume reduction factor, and requiring a footprint of approximately 52 m2 to treat 1000 m3 of olive mill wastewater.
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Affiliation(s)
- S Sanches
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal
| | - M C Fraga
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal
- REQUIMTE/Chemistry Department, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - N A Silva
- Adventech - Centro Empresarial e Tecnológico, Rua de Fundões, 151, 3700-121, São João da Madeira, Portugal
| | - P Nunes
- Adventech - Centro Empresarial e Tecnológico, Rua de Fundões, 151, 3700-121, São João da Madeira, Portugal
| | - J G Crespo
- REQUIMTE/Chemistry Department, Faculdade de Ciências e Tecnologia, UNL, Caparica, Portugal
| | - V J Pereira
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal.
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Maragkaki AE, Fountoulakis M, Gypakis A, Kyriakou A, Lasaridi K, Manios T. Pilot-scale anaerobic co-digestion of sewage sludge with agro-industrial by-products for increased biogas production of existing digesters at wastewater treatment plants. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 59:362-370. [PMID: 27818072 DOI: 10.1016/j.wasman.2016.10.043] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 10/04/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
Due to low degradability of dry solids, most of the digesters at wastewater treatment plants (WWTP) operate at low loading rates resulting in poor biogas yields. In this study, co-digestion of sewage sludge (SS) with olive mill wastewater (OMW), cheese whey (CW) and crude glycerol (CG) was studied in an attempt to improve biogas production of existing digesters at WWTPs. The effect of agro-industrial by-products in biogas production was investigated using a 220L pilot-scale (180L working volume) digester under mesophilic conditions (35°C) with a total feeding volume of 7.5L daily and a 24-day hydraulic retention time. The initial feed was sewage sludge and the bioreactor was operated using this feed for 40days. Each agro-industrial by-product was then added to the feed so that the reactor was fed continuously with 95% sewage sludge and 5% (v/v) of each examined agro-industrial by-product. The experiments showed that a 5% (v/v) addition of OMW, CG or CW to sewage sludge significantly increased biogas production by nearly 220%, 350% and 86% as values of 34.8±3.2L/d, 185.7±15.3L/d and 45.9±3.6L/d respectively, compared to that with sewage sludge alone (375ml daily, 5% v/v in the feed). The average removal of dissolved chemical oxygen demand (d-COD) ranged between 72 and 99% for organic loading rates between 0.9 and 1.5kgVSm-3d-1. Reduction in the volatile solids ranged between 25 and 40%. This work suggests that methane can be produced very efficiently by adding a small concentration (5%) of agro-industrial by-products and especially CG in the inlet of digesters treating sewage sludge.
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Affiliation(s)
- A E Maragkaki
- Laboratory of Solid Waste & Wastewater Management, School of Agricultural Technology, Technological Educational Institute of Crete, Heraklion 71500, Crete, Greece; Harokopio University, Department of Geography, 70 El. Venizelou, 176 71 Kallithea, Athens, Greece.
| | - M Fountoulakis
- Laboratory of Solid Waste & Wastewater Management, School of Agricultural Technology, Technological Educational Institute of Crete, Heraklion 71500, Crete, Greece
| | - A Gypakis
- General Secretariat of Research and Technology, 14-18, Messogeion Ave, 11527 Athens, Greece
| | - A Kyriakou
- Harokopio University, Department of Geography, 70 El. Venizelou, 176 71 Kallithea, Athens, Greece
| | - K Lasaridi
- Harokopio University, Department of Geography, 70 El. Venizelou, 176 71 Kallithea, Athens, Greece
| | - T Manios
- Laboratory of Solid Waste & Wastewater Management, School of Agricultural Technology, Technological Educational Institute of Crete, Heraklion 71500, Crete, Greece
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9
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Liquid chromatography coupled to tandem and high resolution mass spectrometry for the characterisation of ofloxacin transformation products after titanium dioxide photocatalysis. J Chromatogr A 2016; 1443:201-10. [DOI: 10.1016/j.chroma.2016.03.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 03/21/2016] [Accepted: 03/21/2016] [Indexed: 11/24/2022]
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10
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Masmoudi M, Rahal C, Abdelhedi R, Khitouni M, Bouaziz M. Inhibitive action of stored olive mill wastewater (OMW) on the corrosion of copper in a NaCl solution. RSC Adv 2015. [DOI: 10.1039/c5ra17744h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stored OMWs are greatly enriched in phenolic compounds, mainly HT and tyrosol. But, after 4 years the concentrations of these compounds decrease. We find that OMW acts as a mixed-type corrosion inhibitor.
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Affiliation(s)
- Mohamed Masmoudi
- Laboratory of Electrochemistry and Environment (LEE)
- Sfax National Engineering School (ENIS)
- University of Sfax
- BPW 3038 Sfax
- Tunisia
| | - Chahla Rahal
- Laboratory of Electrochemistry and Environment (LEE)
- Sfax National Engineering School (ENIS)
- University of Sfax
- BPW 3038 Sfax
- Tunisia
| | - Ridha Abdelhedi
- Laboratory of Electrochemistry and Environment (LEE)
- Sfax National Engineering School (ENIS)
- University of Sfax
- BPW 3038 Sfax
- Tunisia
| | - Mohamed Khitouni
- Laboratory of Inorganic Chemistry (Ur-11-Es-73)
- Faculty of Sciences of Sfax
- University of Sfax
- Tunisia
| | - Mohamed Bouaziz
- Laboratory of Electrochemistry and Environment (LEE)
- Sfax National Engineering School (ENIS)
- University of Sfax
- BPW 3038 Sfax
- Tunisia
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11
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Rigane H, Chtourou M, Ben Mahmoud I, Medhioub K, Ammar E. Polyphenolic compounds progress during olive mill wastewater sludge and poultry manure co-composting, and humic substances building (Southeastern Tunisia). WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2015; 33:73-80. [PMID: 25502693 DOI: 10.1177/0734242x14559594] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In Mediterranean areas, olive mill wastes pose a major environmental problem owing to their important production and their high polyphenolic compounds and organic acids concentrations. In this work, the evolution of polyphenolic compounds was studied during co-composting of olive mill wastewater sludge and poultry manure, based on qualitative (G-50 sephadex) and quantitative (Folin-Ciocalteu), as well as high pressure liquid chromatography analyses. Results showed a significant polyphenolic content decrease of 99% and a noticeable transformation of low to high molecular weight fraction during the compost maturation period. During this step, polyphenols disappearance suggested their assimilation by thermophilic bacteria as a carbon and energy source, and contributed to humic substances synthesis. Polyphenolic compounds, identified initially by high pressure liquid chromatography, disappeared by composting and only traces of caffeic, coumaric and ferulic acids were detected in the compost. In the soil, the produced compost application improved the chemical and physico-chemical soil properties, mainly fertilising elements such as calcium, magnesium, nitrogen, potassium and phosphorus. Consequently, a higher potato production was harvested in comparison with manure amendment.
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Affiliation(s)
- Hafedh Rigane
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Mohamed Chtourou
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Imen Ben Mahmoud
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Khaled Medhioub
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia Preparatory Institute of Engineering Studies of Sfax, Sfax, Tunisia
| | - Emna Ammar
- University of Sfax, Research unit: Study and Management of Coastal and Urban Environments, Sfax, Tunisia National Engineering School of Sfax, Sfax, Tunisia
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12
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Di Lecce G, Cassano A, Bendini A, Conidi C, Giorno L, Toschi TG. Characterization of olive mill wastewater fractions treatment by integrated membrane process. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:2935-2942. [PMID: 24591090 DOI: 10.1002/jsfa.6637] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 02/04/2014] [Accepted: 02/26/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Up to now, the management of olive mill wastewaters, a three-phase mill by-product, remains an unsolved problem, in particular for those regions where huge quantities of vegetable water are produced. Olive mill wastewaters were therefore treated to evaluate the characteristics of permeate and retentate fractions produced by an integrated membrane system working at two different volume concentration factors. RESULTS The effect of two membrane-based filtration steps (microfiltration and nanofiltration) on the content of chemical oxygen demand, dry matter, sensory quality, phenolic compounds and antioxidant activity of permeate and retentate samples was evaluated. Furthermore, the effect of two different volume concentration factors (VCF), in the nanofiltration step, were investigated. At high VCF values, the total phenolic content in the retentate fraction was found to be 3.7-fold higher than the starting one, while the reduction of chemical oxygen demand in the permeate fraction was greater than 97% also at lower VCF values. CONCLUSION Each filtration step has provided useful information concerning the utility and appropriateness of the processes chosen, suggesting a sustainable hypothesis of 'normal industrial practice' that can be included in current processes of oil extraction, in order to purify water and recover phenolic compounds with high added value.
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Affiliation(s)
- Giuseppe Di Lecce
- Department of Agricultural and Food Sciences, Alma Mater Studiorum - University of Bologna, I-47521, Cesena (FC), Italy
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13
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Treatment of olive mill wastewater by membrane distillation using polytetrafluoroethylene membranes. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.06.026] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Sampaio MA, Gonçalves MR, Marques IP. Anaerobic digestion challenge of raw olive mill wastewater. BIORESOURCE TECHNOLOGY 2011; 102:10810-10818. [PMID: 21983408 DOI: 10.1016/j.biortech.2011.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 08/26/2011] [Accepted: 09/01/2011] [Indexed: 05/31/2023]
Abstract
Olive mill wastewater (OMW) was digested in its original composition (100% v/v) in an anaerobic hybrid. High concentrations (54-55 kg COD m(-3)), acid pH (5.0) and lack of alkalinity and nitrogen are some OMW adverse characteristics. Loads of 8 kg COD m(-3) d(-1) provided 3.7-3.8 m3 biogas m(-3) d(-1) (63-64% CH4) and 81-82% COD removal. An effluent with basic pH (8.1) and high alkalinity was obtained. A good performance was also observed with weekly load shocks (2.7-4.1, 8.4-10.4 kg COD m(-3) d(-1)) by introducing piggery effluent and OMW alternately. Biogas of 3.0-3.4 m3 m(-3) d(-1) (63-69% CH4) was reached. Developed biomass (350 days) was neither affected by raw OMW nor by organic shocks. Through the effluents complementarity concept, a stable process able of degrading the original OMW alone was obtained. Unlike what is referred, OMW is an energy resource through anaerobiosis without additional expenses to correct it or decrease its concentration/toxicity.
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Affiliation(s)
- M A Sampaio
- Bioenergy Unit, National Laboratory of Energy and Geology I.P. (LNEG), Estrada Paço do Lumiar 22, 1649-038 Lisboa, Portugal.
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15
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Reis MTA, Freitas OMF, Agarwal S, Ferreira LM, Ismael MRC, Machado R, Carvalho JMR. Removal of phenols from aqueous solutions by emulsion liquid membranes. JOURNAL OF HAZARDOUS MATERIALS 2011; 192:986-994. [PMID: 21703759 DOI: 10.1016/j.jhazmat.2011.05.092] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 05/26/2011] [Accepted: 05/27/2011] [Indexed: 05/26/2023]
Abstract
The present study deals with the extraction of phenols from aqueous solutions by using the emulsion liquid membranes technique. Besides phenol, two derivatives of phenol, i.e., tyrosol (2-(4-hydroxyphenyl)ethanol) and p-coumaric acid (4-hydroxycinnamic acid), which are typical components of the effluents produced in olive oil plants, were selected as the target solutes. The effect of the composition of the organic phase on the removal of solutes was examined. The influence of pH of feed phase on the extraction of tyrosol and p-coumaric was tested for the membrane with Cyanex 923 as an extractant. The use of 2% Cyanex 923 allowed obtaining a very high extraction of phenols (97-99%) in 5-6 min of contact time for either single solute solutions or for their mixtures. The removal efficiency of phenol and p-coumaric acid attained equivalent values by using the system with 2% isodecanol, but the removal rate of tyrosol was found greatly reduced. The extraction of tyrosol and p-coumaric acid from their binary mixture was also analysed for different operating conditions like the volume ratio of feed phase to stripping phase (sodium hydroxide), the temperature and the initial concentration of solute in the feed phase.
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Affiliation(s)
- M Teresa A Reis
- Centre for Chemical Processes, Department of Chemical and Biological Engineering, Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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Cassano A, Conidi C, Drioli E. Comparison of the performance of UF membranes in olive mill wastewaters treatment. WATER RESEARCH 2011; 45:3197-3204. [PMID: 21489594 DOI: 10.1016/j.watres.2011.03.041] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 03/19/2011] [Accepted: 03/21/2011] [Indexed: 05/30/2023]
Abstract
Olives are known to contain an appreciate amount of phenols with good antioxidant properties which are lost in large part in olive mill wastewaters (OMWs) during olive oil production. Membrane technology offers several advantages (low energy consumption, no additive requirements, no phase change) over traditional techniques to recover phenolic compounds from OMWs. The aim of this work was to evaluate the performance of different UF membranes in the treatment of OMWs finalized to the recovery of polyphenols. For this purpose, OMWs were processed, in selected operating conditions, with four flat-sheet UF membranes characterized by different molecular weight cut-off (MWCO) (4, 5 and 10 kDa) and polymeric material (regenerated cellulose and polyethersulphone). Permeate fluxes, fouling index and retention coefficients towards phenolic compounds, total antioxidant activity (TAA) and total organic carbon (TOC) were evaluated. Regenerated cellulose membranes exhibited lower rejections towards phenolic compounds, higher permeate fluxes and lower fouling index if compared with PES membranes.
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Affiliation(s)
- A Cassano
- Institute on Membrane Technology, ITM-CNR, University of Calabria, via P. Bucci, 17/C, I-87030 Rende (CS), Italy.
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Bodini SF, Cicalini AR, Santori F. Rhizosphere dynamics during phytoremediation of olive mill wastewater. BIORESOURCE TECHNOLOGY 2011; 102:4383-4389. [PMID: 21256739 DOI: 10.1016/j.biortech.2010.12.091] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 12/22/2010] [Accepted: 12/23/2010] [Indexed: 05/30/2023]
Abstract
The potential of phytoremediation as a treatment option for olive mill wastewater (OMW) was tested on five perennial tree species. Cupressus sempervirens and Quercus ilex proved tolerant to six-month OMW treatment followed by six-month water irrigation, whereas Salix sp. and Laurus nobilis and, later, Pinus mugo suffered from phytotoxic effects. Test plants were compared to controls after treatment and irrigation, by monitoring biochemical and microbiological variations in the rhizosphere soil. OMW-treated soils were exposed to 50-fold higher phenols concentrations, which, irrespective of whether the respective plants were OMW-resistant or susceptible, were reduced by more than 90% by the end of the irrigation cycle, owing to significantly increased laccase, peroxidase and β-glucosidase activities, recovery/acquisition of bacterial culturability and transitory development of specialized fungal communities sharing the presence of Geotrichum candidum. Of all results, the identification of Penicillium chrysogenum and Penicillium aurantiogriseum as dominant rhizosphere fungi was distinctive of OMW-tolerant species.
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Affiliation(s)
- S F Bodini
- Department of Environmental Biotechnologies, ISRIM Scarl, Strada di Pentima 4, 05100 Terni, Italy.
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Garcia-Castello E, Cassano A, Criscuoli A, Conidi C, Drioli E. Recovery and concentration of polyphenols from olive mill wastewaters by integrated membrane system. WATER RESEARCH 2010; 44:3883-3892. [PMID: 20639013 DOI: 10.1016/j.watres.2010.05.005] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 04/30/2010] [Accepted: 05/04/2010] [Indexed: 05/29/2023]
Abstract
The purpose of this work was to analyse the potentialities of an integrated membrane system for the recovery, purification and concentration of polyphenols from olive mill wastewater (OMW). The proposed system included some well-known membrane operations such as microfiltration (MF) and nanofiltration (NF), as well as others not yet investigated for this specific application, such as osmotic distillation (OD) and vacuum membrane distillation (VMD). The OMW was directly submitted to a MF operation without preliminary centrifugation. This step allowed to achieve a 91% and 26% reduction of suspended solids and total organic carbon (TOC), respectively. Moreover, 78% of the initial content of polyphenols was recovered in the permeate stream. The MF permeate was then submitted to a NF treatment. Almost all polyphenols were recovered in the produced permeate solution, while TOC was reduced from 15 g/L to 5.6 g/L. A concentrated solution enriched in polyphenols was obtained by treating the NF permeate by OD. In particular, a solution containing about 0.5 g/L of free low molecular weight polyphenols, with hydroxytyrosol representing 56% of the total, was produced by using a calcium chloride dihydrate solution as brine. The obtained solution is of interest for preparing formulations to be used in food, cosmetic and pharmaceutical industry. Besides the OD process, VMD was applied as another way for concentrating the NF permeate and the performance of both processes was compared in terms of evaporation fluxes.
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Affiliation(s)
- E Garcia-Castello
- Department of Chemical and Nuclear Engineering, Polytechnic University of Valencia, Camino de Vera, s/n, 46022 Valencia, Spain
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