Integrated biomass production and biodegradation of olive mill wastewater by cultivation of Scenedesmus sp.

Caprio, Fabrizio Di; Altimari, Pietro; Pagnanelli, Francesca

doi:10.1016/j.algal.2015.04.007

Cited by 52 publications

(31 citation statements)

References 35 publications

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“…The effect of OMW on soil microflora may be positive, by temporarily enriching the soil with easily degradable C, which stimulates microflora development, or negative by enriching the soil with OMW residues that are toxic to certain microorganisms (Barbera, Maucieri, Cavallaro, Ioppolo, & Spagna, 2013;Capasso et al, 1995;Kurtz et al, 2015;Mekki et al, 2008). Additionally, several studies have reported that OMW can also promote microalgal growth (Di Caprio, Altimari, & Pagnanelli, 2015;Hodaifa, Sánchez, Martínez, & Órpez, 2013).…”

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Annual spreading of olive mill wastewater over consecutive years: Effects on cultivated soils' physical properties

et al. 2017

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Several studies cautioned against potential negative effects of controlled olive mill wastewater (OMW) application on soil physical properties that could be associated with the possible adverse effects of K on soil structure stability. The objective of the study was to examine the effects of annual application of OMW over several years on selected physical properties of the upper soil layer (0-10 cm) and their link to exchangeable K levels. Two experimental field platforms were studied: field crops grown in a tilled clay soil (3 years of OMW application) and an olive orchard grown in a sandy-loam soil (5 years of OMW application). In the clay soil, OMW application did not affect organic carbon (OC) and only slightly increased exchangeable potassium percentage (EPP) from 3.3 in the control to~4.5 in the OMW-treated plots. In the sandy-loam soil, application of different rates of OMW resulted in an increase in both OC and EPP (>20) compared with the control (8). For both soils, addition of OMW improved aggregate stability; yet for the clay soil, the increase was not associated with changes in EPP or OC. In the sandy-loam soil, aggregate stability was positively correlated with OC and EPP. Soil hydraulic conductivity, tested for the sandyloam soil only, was not affected by OMW application. Overall, our study shows that consecutive 3 to 5 years of controlled OMW application in the range of 50-150 m 3 OMW ha −1 y −1 does not result in the deterioration of soil physical and hydraulic properties. reported a range of 5.5-12 dS m −1 for electric conductivity. In addition to the oil extraction process, the high variability in OMW properties was attributed to harvest date, irrigation level, cultivar type, and fruit water content (Aviani et al., 2012). Nonetheless, these unique characteristics of OMW prevent its direct discharge into domestic wastewater treatment plants (Laor et al., 2011;Rozzi & Malpei, 1996;Sayadi, Allouche, Jaoua, & Aloui, 2000 to the classic "wastewater treatment" approach, numerous studies advised the controlled spreading of OMW on cultivated soils as a viable recycling approach. It was further suggested that OMW could be considered as a useful, low-cost soil amendment and fertilizer (Chartzoulakis, Psarras, Moutsopoulou, & Stefanoudaki, 2010;Gargouri et al., 2013;Hanifi & El Hadrami, 2008;Laor et al., 2011;Tomati, Galli, Fiorelli, & Pasetti, 1996), although OMW application caused a drastic reduction in soil mineral-N indicating net N immobilization (Karpouzas et al., 2010). OMW showed its potential to serve as environmental friendly bio-herbicide (Boz, Dogan, & Albay, 2003;Boz, Ogüt, Kir, & Dogan, 2009), and finally, in regions having low soil organic matter (SOM) content and consequently low soil fertility, OMW can serve as a readily available organic matter (OM) source.Yet, great concerns have been raised regarding the adverse effects of OMW on and to seed development and germination (Aliotta, Fiorentino, Oliva, & Temussi, 2002;Aviani, Raviv, Hadar, Saadi, & Laor, 2009;Barbera, Maucieri, Iop...

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Annual spreading of olive mill wastewater over consecutive years: Effects on cultivated soils' physical properties

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“…Industry effluent (Textile dyeing industry) (Gopalakrishnan, 2014) Scenedesmus sp. Produced water Wastewater (Johnson, 2015); (Di Caprio, 2015) Dictyosphaerium sp. Wastewater (Zhou, 2014) Microalgae:…”

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confidence: 99%

Potential application of microalgae in produced water treatment

Hakim¹,

Quadir²

2018

Desalination and Water Treatment

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Produced water, deriving from petroleum industry as a result of oil production, constitutes of high concentration of pollutants, such as dissolved nitrogen, phosphorus, dissolved organic carbon, heavy metals and monocyclic aromatic compound like BTEX (benzene, toluene, ethylbenzene, and xylene). Thus, removal of these pollutants from produced water is essential. Many conventional treatments are currently present, which often used for the produced water treatment. Most of the time, these treatments processes are costly and these processes increase the overall cost of oil production. As an alternative solution, microscopic microalgae can be used to remove these pollutants from the produced water effluents. These microalgae can bio-remediate produced water effluents while utilizing some of these pollutants as sources of nutrients. The current study examines pollutant removal efficiency of different microalgae species from produced water effluents. After initial screening, five species of microalgae strains Monoraphidium, Chlorella, Neochloris, Scenedesmus, Dictyosphaerium were chosen for the study. Chlorella and Dictyosphaerium species show a significant amount of biomass generation within all different concentration of produced water. Although the biomass yield of Neochloris strain was low, it was able to remove a higher amount of organic carbon than other microalgae strains. Although biomass generation was significantly varied within the microalgae strains, nitrogen removal efficiency by all the strains were similar. Also similar results were also found for most of the BTEX component. Only in the case of phosphorus and various metals, removal efficiency was better by Dictyosphaerium microalgae species. However, the variation of produced water concentration has no significant effect on the pollutants removal efficiency of microalgae strains. Thus, the results indicate that microalgae strains can grow in produced water effluents-deriving from petroleum industries and remove pollutants.

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“…, Di Caprio et al. ). Its characteristic growth in coenobia comprised four or more cells provide a good resistance to predators such as protozoa (Wu et al.…”

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“…In addition, it is used for producing commercially relevant carotenoids such as lutein and astaxanthin (Qin et al 2008, Pirastru et al 2012). Added to this, microalgae belonging to this species are able to adapt to diverse and stressful conditions such as cultivation in wastewater (Arbib et al 2013, Ji et al 2013, Wu et al 2014, Di Caprio et al 2015a). Its characteristic growth in coenobia comprised four or more cells provide a good resistance to predators such as protozoa (Wu et al 2014).…”

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Quantification of Tetradesmus obliquus (Chlorophyceae) cell size and lipid content heterogeneity at single‐cell level

Caprio

Pagnanelli

Wijffels

et al. 2018

Journal of Phycology

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Much of our current knowledge of microbial growth is obtained from studies at a population level. Driven by the realization that processes that operate within a population might influence a population's behavior, we sought to better understand Tetradesmus obliquus (formerly Scenedesmus obliquus) physiology at the cellular level. In this work, an accurate pretreatment method to quantitatively obtain single cells of T. obliquus, a coenobia-forming alga, is described. These single cells were examined by flow cytometry for triacylglycerol (TAG), chlorophyll, and protein content, and their cell sizes were recorded by coulter counter. We quantified heterogeneity of size and TAG content at single-cell level for a population of T. obliquus during a controlled standard batch cultivation. Unexpectedly, variability of TAG content per cell within the population increased throughout the batch run, up to 400 times in the final stage of the batch run, with values ranging from 0.25 to 99 pg · cell . Two subpopulations, classified as having low or high TAG content per cell, were identified. Cell size also increased during batch growth with average values from 36 to 70 μm · cell ; yet cell size variability increased only up to 16 times. Cell size and cellular TAG content were not correlated at the single-cell level. Our data show clearly that TAG production is affected by cell-to-cell variation, which suggests that its control and better understanding of the underlying processes may improve the productivity of T. obliquus for industrial processes such as biodiesel production.

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Integrated biomass production and biodegradation of olive mill wastewater by cultivation of Scenedesmus sp.

Cited by 52 publications

References 35 publications

Annual spreading of olive mill wastewater over consecutive years: Effects on cultivated soils' physical properties

Annual spreading of olive mill wastewater over consecutive years: Effects on cultivated soils' physical properties

Potential application of microalgae in produced water treatment

Quantification of Tetradesmus obliquus (Chlorophyceae) cell size and lipid content heterogeneity at single‐cell level

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