Effects of spreading olive mill wastewater on soil properties and crops, a review

Barbera, Antonio C.; Maucieri, Carmelo; Cavallaro, Valéria; Ioppolo, A.; Spagna, G.

doi:10.1016/j.agwat.2012.12.009

Cited by 194 publications

(91 citation statements)

References 85 publications

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“…The lower yield obtained in the present study compared to the previous mentioned study is probably due to water deficit developed early in the growing season ( Figure 1) and to low inorganic N availability rather than to a toxic effect of OMW. Phytotoxicity is negatively related to plant age and mainly occur at stage of seed break [4,16]. Exposure to phenol concentration of up to 250 mg/L did not induce toxicity development of S. viminalis seedlings grown hydroponically [44].…”

Section: Discussionmentioning

confidence: 94%

“…In addition to biodegradation part of the applied organic substrate and nutrients may be retained into the soil matrix [9,10], leading to enhancement of soil fertility [6,7,11,12]. Also, OMW application may cause alterations in soil biological properties [7,[13][14][15][16] associated with the changing nutrient availabilities and/or toxicity phenomena. With regard to physical properties of soil, there is evidence of changes due to OMW application, but the results so far are contradictory [6,17,18].…”

Section: Introductionmentioning

confidence: 99%

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Land Application-Based Olive Mill Wastewater Μanagement

Kapellakis

Tzanakakis²,

Angelakιs

2015

Water

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Land application of olive mill wastewater (OMW) is considered a promising low-cost practice for olive-oil producing countries. The objectives of this work were to investigate: (i) OMW treatment potential of a land treatment system (LTS), planted with a E. camaldulensis species, regarding N, P, C, and phenols; (ii) the effects of OMW on chemical properties of soil and soil solution characteristics; and (iii) the performance of E. camaldulensis in terms of biomass production and N and P recovery. E. camaldulensis received OMW for two growing seasons at rates based on maximum organic loading. These rates were almost equivalent to the reference evapotranspiration of the area. Soil solution and soil samples were collected from three different depths (15, 30 and 60 cm) at specified time intervals. -Also, samples of plant tissues were collected at the end of application periods. OMW land application resulted in significant reduction in inorganic and organic constituents of OMW. At 15 cm of soil profile, the average removal of COD, TKN, NH4 + -N, TP, In-P, and total phenols approached 93%, 86%, 70%, 86%, 82%, and 85%, respectively, while an increase in soil depth (30 and 60 cm) did not improve significantly treatment efficiency. Furthermore, OMW increased soil organic matter (SOM), total kjeldahl nitrogen (TKN), and available P, particularly in the upper soil layer. In contrast, low inorganic N content was observed in the soil throughout the study period caused probably by increased competition among soil microorganisms induced by the organic substrate supply and high C/N ratio. Also, electrical conductivity (EC) and SAR OPEN ACCESSWater 2015, 7 363 increased by OMW addition, but at levels that may do not pose severe risk for soil texture. Enhancement of soil fertility due to OMW application sustained eucalyptus trees and provided remarkable biomass yield. In conclusion, land application of OMW has a great potential for organic matter and phenol assimilation and can be effectively used for OMW detoxification.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Land Application-Based Olive Mill Wastewater Μanagement

Kapellakis

Tzanakakis²,

Angelakιs

2015

Water

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“…Fertilisation with organic wastes therefore represents an alternative for sustainable agriculture (Casacchia et al, 2012;Marchetti et al, 2012;Morra et al, 2013;Barbera et al, 2013;Nkoa, 2014). In this context the agricultural reuse of digestate, organic waste product of biogas plants, should be considered.…”

Section: Introductionmentioning

confidence: 99%

Effect of injection depth of digestate liquid fraction on soil carbon dioxide emission and maize biomass production

2016

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The aim of this study was to evaluate, in open field conditions, the effect of injection depth of digestate liquid fraction (10 cm, 25 cm and 35 cm) in clay loam soil, on CO2 emission. An un-amended soil was considered as control. The study was performed in 2014 on a farm located in Terrasa Padovana, Veneto region (Italy) distributing digestate before maize sowing.Digestate injection determined a high soil CO2 emission in the first hour after application, followed by a progressive reduction in as early as 24 h, reaching significantly lower values, similar to those measured in the un-amended control, after 48 h. Gas emissions measured 1 h after digestate application decreased as injection depth increased with significantly higher emission values in the 10 cm treatment (median value 23.7 g CO2 m -2 h -1 ) than in the 35 cm one (median value 2.5 g CO2 m -2 h -1 ). In the 3 days between digestate distribution and maize sowing, soil CO2 emission was significantly higher in the amended treatments than un-amended one, with median values of 1.53 g CO2 m -2 h -1 and 0.46 g CO2 m -2 h -1 respectively. During maize growing season, no significant soil CO2 emission difference was monitored among treatments, with a median value of 0.33 g CO2 m -2 h -1 .Digestate application significantly improved maize aboveground dry biomass with an average yield of 22.0 Mg ha -1 and 16.2 Mg ha -1 in amended and un-amended plots, respectively, due to the different amount of nutrients supplied. IntroductionIntensive soil fertilisation with mineral fertilisers has led to several issues, like loss of soil carbon (C), and nitrogen (N) leaching (Borin et al., 1997;Nardi et al., 2004;Morari et al., 2006). Fertilisation with organic wastes therefore represents an alternative for sustainable agriculture (Casacchia et al., 2012;Marchetti et al., 2012;Morra et al., 2013;Barbera et al., 2013;Nkoa, 2014). In this context the agricultural reuse of digestate, organic waste product of biogas plants, should be considered. Furthermore, the sustainability of biogas production may depend on an appropriate end-use of the downstream effluents of anaerobic digestion, which should be treated, disposed of, or re-used in a proper way, avoiding any environmental impact (de la Fuente et al., 2013). Digested waste materials present some advantages for their use as soil amendments in comparison with untreated wastes, such as greater microbial stability and hygiene and a higher NH4 + -N amount (Holm-Nielsen et al., 2009;Alburquerque et al., 2012b;Möller and Müller, 2012). Therefore, digestate can be considered as organic amendment or organic fertiliser when properly handled and managed (Nkoa, 2014). In fact, the application of organic matter to agricultural soils stimulates microbial activity, increasing greenhouse gases emission (Bol et al., 2003;Fangueiro et al., 2010), thus requiring the application of appropriate agronomic techniques for greenhouse gases emission mitigation (Pezzolla et al., 2012).Several laboratory scale studies investigated the effect of so...

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“…The use of OMW for soil improvement has been proposed by several authors and comprehensively reviewed by Barbera et al (2013). The high content of OMW organic matter and other nutrients, especially potassium (Roig et al, 2006), makes it valuable as a soil supplement (Mekki et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers indicated that ambient environmental conditions during OMW disposal on soil play a major role in favoring either beneficial or negative effects of OMW-soil interactions (e.g., Barbera et al, 2013;Mekki et al, 2007;Zenjari and Nejmeddine, 2001). The high temporal and spatial variability of ambient environmental conditions existent in the Mediterranean Basin, as well as the high variability of olive orchard types, may explain the partly contradictory results described above.…”

Section: Introductionmentioning

confidence: 99%

Effects of olive mill wastewater disposal on soil: Interaction mechanisms during different seasons

Tamimi

Diehl

Njoum

et al. 2016

Journal of Hydrology and Hydromechanics

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Environmental conditions play a major role for effects of olive mill wastewater (OMW) application to soil. Choosing a different season for OMW application than the commonly practiced winter, may help avoid negative effects. However, understanding of the OMW-soil interaction during different seasons is still incomplete due to the lack of comparative data. In this study, an 18 months field experiment was carried out in an olive orchard in West Bank. Degree and persistence of soil salinization, acidification, accumulation of phenolic compounds and soil water repellency were investigated as a function of soil depth and time elapsed after OMW application, which was performed either in spring, summer (with and without irrigation) or winter. The persistence of negative effects increased with duration of the hot and dry period following the application due to accumulation and polymerization of OMW. On the other hand, leaching of OMW components to groundwater is favored during the rainy season and by formation of preferential flow paths before the rain season starts. The risks of groundwater contamination and persistent negative effects decrease with increasing time under conditions favoring biological activity. Therefore, OMW application in spring if improved by a careful irrigation is considered as the most suitable under semiarid conditions for clay loam soils.

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Effects of spreading olive mill wastewater on soil properties and crops, a review

Cited by 194 publications

References 85 publications

Land Application-Based Olive Mill Wastewater Μanagement

Land Application-Based Olive Mill Wastewater Μanagement

Effect of injection depth of digestate liquid fraction on soil carbon dioxide emission and maize biomass production

Effects of olive mill wastewater disposal on soil: Interaction mechanisms during different seasons

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