Effects of single and combined olive mill wastewater and olive mill pomace on the growth, reproduction, and survival of two earthworm species (Aporrectodea trapezoides, Eisenia fetida)

Mekersi, Nawal; Kadi, Kenza; Casini, Silvia; Addad, Dalila; Bazri, K.E.M.; Marref, Salah Eddine; Lekmine, Sabrina; Amari, Asma

doi:10.1016/j.apsoil.2021.104123

Cited by 10 publications

(16 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The physicochemical properties of OMP are influenced by the techniques used in olive oil extraction, as well as by other agronomic factors such as the extraction process, growing conditions, olive variety, stage of ripeness, olive origin, and storage conditions (Mekersi et al, 2021). Our data regarding the pH value of OMP were showed an acidic pH due to the presence of organic acids (phenolic acids, fatty acids, ...) While previous studies were showing pH values between 5.4 and 6.6 (Aviani et al, 2010;Medjahdi et al, 2014;Michele et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…The high electrical conductivity could be due to the high salt content used to preserve the olives before extraction, as well as the mineral components present in the olive mill wastes (Bouknana et al, 2014). The electrical conductivity of olive pomace is an indicator of total mineralization and is related to the concentration and nature of dissolved chemicals (Mekersi et al, 2021). Our results were higher than those found by Ragni et al ( 2017 2019), The findings regarding the organic matter content and organic carbon content are similar to those of Ameziane et al (2019).…”

Section: Discussionmentioning

confidence: 99%

“…From antiquity to the present, the olive industry is among the most traditional crop production, with important productive relevance for Mediterranean countries (Chatzistathis and Koutsos, 2017). Algeria is the ninth country producing olive oil in the world, about 4% of global production (Mekersi et al, 2021). There are various systems of olive oil extraction that are widespread throughout the world.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of the effects of short-term amendment with olive mill pomace on some soil properties

Mekersi¹,

Kadi²,

Casini³

et al. 2022

Soil Sci. Ann.

Self Cite

View full text Add to dashboard Cite

The extraction of olive oil produces an enormous quantity of waste, such as olive mill wastewater (OMWW) and olive mill pomace (OMP), The majority of the agricultural wastes, including olive oil mill waste, are used as soil amendments due to their high nutritional value. The purpose of this study was to investigate the effects of the amendment with olive mill pomace from a 3-phase coldpressed system on the characteristics of the soil pH, electrical conductivity (EC), and organic matter content (OM). The experiment was carried out using increasing rates of olive mill pomace (12.5%, 25%, 50%, 75%, and 100% w/w) plus the control untreated soil in microcosms under laboratory conditions. The results showed that the treatment of soil with olive mill pomace has a signifi cant effect on soil properties (pH, EC, OM, OC, and CaCO 3 ) soil pH was decreased under OMP treatment, especially with high doses of PR4 and PR5, and the electrical conductivity of the soil (EC) was increased, as well as soil carbonate content. Moreover, the soil organic matter content and soil organic carbon content were highly increased under the treatment with OMP. As a result, we can consider the olive mill pomace as a soil fertilizer. Pretreatment of olive mill pomace to reduce acidic pH and salt content before use as a soil amendment is also recommended.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the effects of short-term amendment with olive mill pomace on some soil properties

Mekersi¹,

Kadi²,

Casini³

et al. 2022

Soil Sci. Ann.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Today, most olive mill by‐products are disposed of untreated into the environment, resulting in potential risks from soil and groundwater pollution (Kavvadias et al., 2010; Khdair et al., 2019; Muscolo et al., 2019). When raw untreated OMP is applied in excessive doses or distributed unevenly, it may result in potentially phytotoxic and antimicrobial effects due to increased total phenolic content (TPC), acidic pH, higher electrical conductivity (EC), the presence of oil residues and organic acids and a high organic load (Baeta‐Hall et al., 2005; Kavvadias et al., 2010; Khdair et al., 2019; Mekersi et al., 2021; Nasini et al., 2013; Regni, Gigliotti et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Recycling OMP through agricultural utilization also has the added advantage of decreasing its environmental burden (Kavvadias et al., 2010; Khdair et al., 2019). For example, recycling reduces odorous gas emissions (volatile organic acids and other low‐boiling organic compounds) arising from the fermentation of OMP when landfilled (Khdair et al., 2019) and the toxicity of OMP by reducing the TPC content (Mekersi et al., 2021), while increasing nutrient cycling (Aranda et al., 2015; Canet et al., 2008; López‐Piñeiro et al., 2007; Montemurro et al., 2004; Regni, Nasini et al., 2017; Tüzel et al., 2020) and soil biological activity (Innangi et al., 2017; Michele et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of olive‐processing technology on the utilization of olive mill pomace as a soil amendment

et al. 2023

View full text Add to dashboard Cite

In the Mediterranean basin, the treatment and disposal of olive mill pomace (OMP) remain a salient environmental issue for the olive oil‐producing industry. This study assesses the effects of olive‐processing technology (three‐phase and two‐phase systems) on the potential use of OMP as a soil amendment. Samples from 12 Croatian olive mills were analyzed for their total phenolic content (TPC), residual oil fraction, and elemental concentration. The samples were profiled using Fourier transform infrared spectroscopy (FT‐IR) and structurally characterized using scanning electron microscopy‐energy‐dispersive X‐ray spectroscopy (EDS). Compared to three‐phase samples, two‐phase OMP was more acidic (pH 4.5 vs. 5.0), with a higher TPC (3835 vs. 1576 mg/kg fresh weight), oil content (11.7% vs. 7.5% d.w., where d.w. is dry weight), electrical conductivity (EC, 5.1 vs. 3.0 mS/cm), and levels of calcium (Ca, 1.34 vs. 1.20 g/kg d.w.) and copper (Cu, 10.4 vs. 7.0 mg/kg d.w.). Similar values of carbon/nitrogen (C/N; 61 vs. 72), N (10 vs. 8.1 g/kg d.w.), phosphorus (1040 vs. 691 mg/kg d.w.), and potassium (K, 13.7 vs. 8.1 g/kg d.w.) were observed. The amounts of chromium, copper, nickel, and zinc were below EC limits in both cases. The EDS mapping revealed that Ca was concentrated at sharp‐edged OMP particles while K was evenly distributed, suggesting that pelletized OMP compost is preferable for amending soil to obtain a homogeneous distribution of nutrients. It was also possible to distinguish between OMPs based on oil and lignin absorption bands in their FT‐IR spectra. According to the obtained results, composting is recommended for both types of OMP to produce a safe product for amendment purposes.

show abstract

Laboratory and physiological aspects of substitute metazoan models for in vivo pharmacotoxicological analysis

Ferreira,

Ramos,

Filho

et al. 2024

Naunyn-Schmiedeberg's Arch Pharmacol

View full text Add to dashboard Cite

Effects of single and combined olive mill wastewater and olive mill pomace on the growth, reproduction, and survival of two earthworm species (Aporrectodea trapezoides, Eisenia fetida)

Cited by 10 publications

References 63 publications

Evaluation of the effects of short-term amendment with olive mill pomace on some soil properties

Evaluation of the effects of short-term amendment with olive mill pomace on some soil properties

Effect of olive‐processing technology on the utilization of olive mill pomace as a soil amendment

Laboratory and physiological aspects of substitute metazoan models for in vivo pharmacotoxicological analysis

Contact Info

Product

Resources

About