Olive oil waste as a biosorbent for heavy metals

Martinez-Garcia, G.; Bachmann, Robert Thomas; Williams, Colin H.; Burgoyne, Andrea; Edyvean, R.G.J.

doi:10.1016/j.ibiod.2006.06.028

Cited by 52 publications

(33 citation statements)

References 24 publications

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“…); therefore, no external compounds were used. Only the pH of sample prepared with fresh WOMW was set around to 7.1 with Ca(OH) 2 . The properties of samples prepared for batch AD tests, according to the procedures mentioned in material and methods section, are reported in Table 4.…”

Section: Anaerobic Digestion Testsmentioning

confidence: 99%

“…Indeed, nowadays, these residues represent an important polluting source and they are often not properly exploited also in a view of a potential recovery. The Mediterranean area is mainly affected by the management and disposal of olive mill residues derived from the olive oil production [1][2][3][4][5]. Indeed, in this region, the olive mill by-products surpass 30 million m 3 per year [5].…”

Section: Introductionmentioning

confidence: 99%

“…The uncontrolled disposal of these residues causes serious pollution problems, such as the deterioration of natural water bodies characteristics and soil quality. The oil extraction systems largely affect the characteristics of olive milling by-products [2]. The wet olive mill wastes (WOMW), generated by the new two phase decanters, are generally more complex to treat and manage compared with the by-products produced by means of the conventional extraction systems.…”

Section: Introductionmentioning

confidence: 99%

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Energetic Valorization of Wet Olive Mill Wastes through a Suitable Integrated Treatment: H2O2 with Lime and Anaerobic Digestion

2016

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Abstract:In the Mediterranean region, the disposal of residues of olive oil industries represents an important environmental issue. In recent years, many techniques were proposed to improve the characteristics of these wastes with the aim to use them for methane generation in anaerobic digestion processes. Nevertheless, these techniques, in many cases, result costly as well as difficult to perform. In the present work, a simple and useful process that exploits H 2 O 2 in conjunction with lime is developed to enhance the anaerobic biodegradability of wet olive mill wastes (WMOW). Several tests were performed to investigate the influence of lime amount and H 2 O 2 addition modality. The treatment efficiency was positively affected by the increase of lime dosage and by the sequential addition of hydrogen peroxide. The developed process allows reaching phenols abatements up to 80% and volatile fatty acids productions up to 90% by using H 2 O 2 and Ca(OH) 2 amounts of 0.05 gH 2 O 2 /gCOD and 35 g/L, respectively. The results of many batch anaerobic digestion tests, carried out by means of laboratory equipment, proved that the biogas production from fresh wet olive mill wastes is hardly achievable. On the contrary, organic matter abatements, around to 78%, and great methane yields, up to 0.34-0.35 L CH4 /g CODremoved , were obtained on pretreated wastes.

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Section: Anaerobic Digestion Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energetic Valorization of Wet Olive Mill Wastes through a Suitable Integrated Treatment: H2O2 with Lime and Anaerobic Digestion

2016

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“…At low heating rate the possibility of secondary pyrolysis reactions can be ruled out. Low heating rate also ensures that no thermal cracking of biomass takes place resulting in more biochar yield [55][56][57][58][59][60]. Concerning high heating rate, it backs the fragmentation of biomass and increases the gaseous and liquid yield, limiting the possibility of formation of the biochar.…”

Section: Heating Ratementioning

confidence: 99%

A review on thermochemical treatment of biomass: Pyrolysis of olive mill wastes in comparison with other types of biomass

Guida

Hannioui

2016

Progress in Agricultural Engineering Sciences

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Abstract. Each year, a great quantity of olive oil is produced by the unit mill of trituration. This activity generates two by-products named olive mill wastewater and olive mill solid waste representing major potential waste and environmental problem. However, there is growing interest in pyrolysis as a technology to treat wastes to produce valuable oil, char and gas products. The major important aim of waste pyrolysis is to produce liquid fuel or bio-oil, which is easy to store, transport and can be an alternative to energy source. The key influence on the product yield is the type of biomass feedstock and operating parameters (especially temperature and heating rate). It is important to investigate the effect of variables on response yield and impulse about their optimization. This study reviews operating variable from existing literature on olive mill wastes (OMSW and OMWW) in comparison with various types of biomass. The major operating variables include type of feedstock, final temperature of pyrolysis, heating rate and particle size. The scale of this paper is to analyse the influence of operating parameters on production of pyrolysis bio-oil, char and gaseous products.

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“…La industria oleícola emplea sistemas de extracción netamente físicos, sin la intervención de sustancias químicas que contaminen los recursos naturales. Sin embargo, genera volúmenes importantes de residuos cuya composición y cantidad dependen del sistema de extracción (Martínez-García et al, 2006); el sistema continuo de tres fases produce por kilogramo de aceituna procesada una cantidad de alpechín que oscila entre 0,5 a 1,4 litros y 0,5 Kg. de orujo (Sierra et al, 2001).…”

Section: Introductionunclassified

Posibilidad de uso del Alpechín en Fertilización de Tierras Agrícolas

Pozzi

Filippín

Matías³

et al. 2010

Inf. tecnol.

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ResumenEn este trabajo se determinan las características del alpechín vertido en una poza y sus modificaciones a través del tiempo para evaluar su posible interacción con el suelo. Se caracterizó el suelo original (S 0 ), cercano a la poza (S 1 ) y el alpechín (A 0 ). Se analizó las modificaciones del efluente A 0 (el alpechín) a medida que se seca a diferentes tiempos (A 0 :0, A 1 :10, A 2 :100, A 3 :190, A 4 : 280 días), transformándose en lodo. Los parámetros se determinaron por triplicado para comparar las diferencias entre alpechín, lodo y suelo. Los parámetros analizados resultaron próximos a los del suelo original, excepto para potasio, materia orgánica y carbono orgánico. Los índices de germinación fueron positivos para dos de las muestras (190 y 280 días). Se infiere que el suelo puede utilizarse como medio para disminuir los efectos del alpechín y se propone a las industrias del sector un método de fertilización sencillo y de bajo costo. Palabras clave: fertilización, alpechín, tierras agrícolas, propiedades del suelo Possibility of use of the Olive Oil Mill Wastewater in Fertilization of Agricultural Lands AbstractThe characteristics of the disposed olive oil mill wastewater (alpechìn), its possible modifications through time and its interaction with soil are analyzed. The original soil (S 0 ), the soil near the pond (S 1 ), and the olive oil mill wastewater (A 0 ) were characterized. The effluent A 0 was examined as it dried at different periods (A 0 :0, A 1 :10, A 2 :100, A 3 :190, A 4 : 280 days). Parameters were determined three times to compare the differences between olive oil mill wastewater, sludge and soil. The parameters proved to be close to those of the original soil except for potassium, organic matter and organic carbon. Index of germination was positive for two of the samples (190 and 280 days). It is concluded that soil can be used as a means for decreasing the olive oil mill wastewater effects proposing to the olive oil industries a simple and low cost fertilization method.

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Olive oil waste as a biosorbent for heavy metals

Cited by 52 publications

References 24 publications

Energetic Valorization of Wet Olive Mill Wastes through a Suitable Integrated Treatment: H2O2 with Lime and Anaerobic Digestion

Energetic Valorization of Wet Olive Mill Wastes through a Suitable Integrated Treatment: H2O2 with Lime and Anaerobic Digestion

A review on thermochemical treatment of biomass: Pyrolysis of olive mill wastes in comparison with other types of biomass

Posibilidad de uso del Alpechín en Fertilización de Tierras Agrícolas

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