Effect of olive mill wastewater land-spreading on soil properties, olive tree performance and oil quality

Ayoub, Salam; Al-Absi, K. M.; Al-Shdiefat, Saleh; Al-Majali, Doaa; Hijazean, Danial

doi:10.1016/j.scienta.2014.06.013

Cited by 79 publications

(26 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Reusing of olive mill waste and olive mill wastewater can eliminate to great extant, the impact of olive waste. Ayoub et al [27] recommended the application of olive mill wastewater (in appropriate dilutions) to enhance soil fertility and olive plant yields. The high contents of phenols in OMWW hindered the application of the treatment of such wastewater biologically.…”

Section: Reducing the Impact Of Olive Mill Waste And Olive Mill Wastementioning

confidence: 99%

Innovative solutions for reduction of olive mill wastewater pollution

Alhajoj¹,

Alowaiesh²

2019

Desalination and Water Treatment

View full text Add to dashboard Cite

a b s t r a c tOlive oil is also an important activity for the inhabitants of Al Jouf, KSA. The production of olive oil is accompanied by the emission of wastes (liquid and solid). These wastes are discharged directly without treatment. This research work aims to study the treatment of such waste by the integration of physical and chemical methods. The organic loads expressed by chemical oxygen demand (COD) and biological oxygen demand (BOD) of the produced wastewater (olive mill wastewater) were evaluated. The quantity of wastes emitted from the three phase centrifuge decanters was found to be higher than that emitted from the two-phase centrifuge decanters. The olive mill wastewater (OMWW) was treated using plane sedimentation (PS) combined with advanced oxidation treatment. The effluent from AO was splitted and treated using complex sand filtration unit (CSF) and modified trickling filter (MTF) in parallel manner. The results indicated that the concentration of COD, BOD, TSS, oil & grease and phenol was reduced greatly by more than 67%, 75%, 20%, 97% and 91% and 65%, 77 3%, 96% and 86%, respectively for the effluent of the three phase OMWW. This work supports the application of such treatment technique for reducing the environmental threats of olive mill waste effluents.

show abstract

Section: Reducing the Impact Of Olive Mill Waste And Olive Mill Wastementioning

confidence: 99%

Innovative solutions for reduction of olive mill wastewater pollution

Alhajoj¹,

Alowaiesh²

2019

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…The effects of application of OMWW on the environment, on soil properties and on olive tree performance were studied by many local researchers [14][15][16][17]. Their results showed that application of OMWW did not have any negative effect on soil properties.…”

Section: Introductionmentioning

confidence: 99%

“…To improve land fertility and olive trees performance, the recommended application of OMWW to olive orchards is 100 m 3 /ha (10 L/m 2 ) [14][15][16][17][18]. It was reported that the concentrations of organic matter, phenolic compounds, potassium and microbial activities were considerably enhanced in soil amended with OMWW [14]. Furthermore, a substantial increase in plant growth, photosynthesis and fruit production were also observed without affecting oil quality parameters.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Environmental Management and Valorization Options for Olive Mill Byproducts in the Middle East and North Africa (MENA) Region

2020

View full text Add to dashboard Cite

Cultivation of olive trees and olive oil production have been considered as a legacy for the Mediterranean region. This custom represents a very important benefit for many nations in terms of wealth and health. However, huge amounts of by-products and waste are generated during olive oil production. This represents a serious environmental impact on land and water bodies if not properly handled. Olive oil extraction generates two waste streams, a solid waste called pomace and olive mill wastewater (OMWW), which has been considered as highly pollutant and phytotoxic waste. These wastes have high disposal costs and predominantly generated from small-scale enterprises that have limited financial resources to treat them properly before discharge to the environment. Besides being a serious environmental problem, OMWW has potential economic value that remains to be utilized such as: fertilizers, valuable antioxidants agents and fatty acids needed in human diet. Also, Olive pomace is a valuable renewable energy source with an energy density of 23 MJ/kg and has become an inexpensive alternative for fossil fuels. Aiming at adding value to the olive production sectors and potential valorization options for byproducts in the MENA region, international practices applied in olive mills wastes management’s and treatment methods used in major oil producing countries are presented.

show abstract

“…The polyphenol content in soils amended using OMW is a well-known problem [12]. It has been reported [55] that the residual levels of polyphenols could remain significant even 6 years after OMW application on the soil.…”

Section: Polyphenols In Substrates and Leachatesmentioning

confidence: 99%

“…Through research studies, it became clear that there are significant benefits from the reuse of OMW in agriculture [11][12][13][14]. However, despite the proven significant benefits in terms of environmental problems caused by nonrational OMW management (e,g., uncontrolled discharge into aquatic systems and soil as discussed in the technical study of the LIFE PROSODOL project [15]), it should be clear that it is ultimately waste reuse.…”

Section: Introductionmentioning

confidence: 99%