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Ritoré E, Coquelet B, Arnaiz C, Morillo J, Usero J. Guidelines for surfactant selection to treat petroleum hydrocarbon-contaminated soils. Environ Sci Pollut Res Int 2022; 29:7639-7651. [PMID: 34480306 PMCID: PMC8763727 DOI: 10.1007/s11356-021-15876-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 08/05/2021] [Indexed: 05/11/2023]
Abstract
The present study determined the most effective surfactants to remediate gasoline and diesel-contaminated soil integrating information from soil texture and soil organic matter. Different ranges for aliphatic and aromatic hydrocarbons (> C6-C8, > C8-C10, > C10-C12, > C12-C16, > C16-C21, and > C21-C35) in gasoline and diesel fuel were analyzed. This type of analysis has been investigated infrequently. Three types of soils (silty clay, silt loam, and loamy sand) and four surfactants (non-ionic: Brij 35 and Tween 80; anionic: SDBS and SDS) were used. The results indicated that the largest hydrocarbon desorption was 56% for silty clay soil (SDS), 59% for silt loam soil (SDBS), and 69% for loamy sand soil (SDS). Soils with large amounts of small particles showed the worst desorption efficiencies. Anionic surfactants removed more hydrocarbons than non-ionic surfactants. It was notable that preferential desorption on different hydrocarbon ranges was observed since aliphatic hydrocarbons and large ranges were the most recalcitrant compounds of gasoline and diesel fuel components. Unlike soil texture, natural organic matter concentration caused minor changes in the hydrocarbon removal rates. Based on these results, this study might be useful as a tool to select the most cost-effective surfactant knowing the soil texture and the size and chemical structure of the hydrocarbons present in a contaminated site.
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Affiliation(s)
- Emilio Ritoré
- Departamento de Ingeniería Química y Ambiental, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092, Sevilla, Spain.
| | - Bruno Coquelet
- Inerco, Inspección y control S.A., La Cartuja Science and Technology Park, Calle Tomás Alva Edison, 2, 41092, Sevilla, Spain
| | - Carmen Arnaiz
- Departamento de Ingeniería Química y Ambiental, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092, Sevilla, Spain
| | - José Morillo
- Departamento de Ingeniería Química y Ambiental, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092, Sevilla, Spain
| | - José Usero
- Departamento de Ingeniería Química y Ambiental, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092, Sevilla, Spain
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Rodriguez-Perez S, Gutierrez JC, Fermoso FG, Arnaiz C. Corrigendum to "Influence of an oxic settling anoxic system on biomass yield, protozoa and filamentous bacteria" [Bioresour. Technol. 200 (2016) 170-177]. Bioresour Technol 2018; 266:568. [PMID: 30030047 DOI: 10.1016/j.biortech.2018.06.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Santiago Rodriguez-Perez
- Departamento de Ingeniería Química y Ambiental, Escuela Técnica Superior de Ingeniería (ETSI), Universidad de Sevilla, C/Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain.
| | - Juan Carlos Gutierrez
- Departamento de Biología Molecular e Ingeniería Bioquímica, Facultad de Ciencias Experimentales, Universidad Pablo de Olavide, Ctra. de Utrera, km 1, 41013 Sevilla, Spain
| | - Fernando G Fermoso
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (C.S.I.C.), Ctra. de Utrera, km. 1, Campus Universitario Pablo de Olavide - Edificio 46, 41013 Sevilla, Spain
| | - Carmen Arnaiz
- Departamento de Ingeniería Química y Ambiental, Escuela Técnica Superior de Ingeniería (ETSI), Universidad de Sevilla, C/Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain
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Montero Moreno J, Arnaiz C, Martinez-Perez L, de la Fuente A, Gonzalez Uruena C. Impact of intravitreous bevacizumab injections on perceived quality of life in a cohort of patients with exudative age related macular degeneration: real life results at 4 years. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rodriguez-Perez S, Fermoso FG, Arnaiz C. Influence of different anoxic time exposures on active biomass, protozoa and filamentous bacteria in activated sludge. Water Sci Technol 2016; 74:595-605. [PMID: 27508364 DOI: 10.2166/wst.2016.247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Medium-sized wastewater treatment plants are considered too small to implement anaerobic digestion technologies and too large for extensive treatments. A promising option as a sewage sludge reduction method is the inclusion of anoxic time exposures. In the present study, three different anoxic time exposures of 12, 6 and 4 hours have been studied to reduce sewage sludge production. The best anoxic time exposure was observed under anoxic/oxic cycles of 6 hours, which reduced 29.63% of the biomass production compared with the oxic control conditions. The sludge under different anoxic time exposures, even with a lower active biomass concentration than the oxic control conditions, showed a much higher metabolic activity than the oxic control conditions. Microbiological results suggested that both protozoa density and abundance of filamentous bacteria decrease under anoxic time exposures compared to oxic control conditions. The anoxic time exposures 6/6 showed the highest reduction in both protozoa density, 37.5%, and abundance of filamentous bacteria, 41.1%, in comparison to the oxic control conditions. The groups of crawling ciliates, carnivorous ciliates and filamentous bacteria were highly influenced by the anoxic time exposures. Protozoa density and abundance of filamentous bacteria have been shown as promising bioindicators of biomass production reduction.
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Affiliation(s)
- S Rodriguez-Perez
- Departamento de Ingeniería Química y Ambiental, Escuela Politécnica Superior, Universidad de Sevilla, C/ Virgen de África 7, 41011 Sevilla, Spain E-mail:
| | - F G Fermoso
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (C.S.I.C.), Ctra. de Utrera, km. 1. Campus Universitario Pablo de Olavide-Edificio 46, 41013 Sevilla, Spain
| | - C Arnaiz
- Departamento de Ingeniería Química y Ambiental, Escuela Politécnica Superior, Universidad de Sevilla, C/ Virgen de África 7, 41011 Sevilla, Spain E-mail:
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Rodriguez-Perez S, Gutierrez JC, Fermoso FG, Arnaiz C. Influence of an oxic settling anoxic system on biomass yield, protozoa and filamentous bacteria. Bioresour Technol 2016; 200:170-177. [PMID: 26479432 DOI: 10.1016/j.biortech.2015.09.106] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 06/05/2023]
Abstract
An oxic settling anoxic system coupled with an activated sludge process has been studied to reduce sewage sludge production. The reduction of sludge yield, excess sludge production and active biomass yield were 51.7%, 52.9% and 67.1%, respectively, compared with the control system. The oxic reactor of the oxic settling anoxic system, even with a lower active biomass concentration than the oxic reactor of control system, showed a higher metabolic activity in their active biomass. Diversity and crawling ciliates group have been shown as promising bioindicators of active biomass yield reduction. The identification of floc-forming bacteria in the control system suggested that oxic settling anoxic system will improve settling properties compared to a Conventional Activated Sludge process.
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Affiliation(s)
- Santiago Rodriguez-Perez
- Departamento de Ingeniería Química y Ambiental, Escuela Politécnica Superior, Universidad de Sevilla, C/ Virgen de África 7, 41011 Sevilla, Spain.
| | | | - Fernando G Fermoso
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (C.S.I.C.), Ctra. de Utrera, km. 1, Campus Universitario Pablo de Olavide - Edificio 46, 41013 Sevilla, Spain
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Arnaiz C, Gutierrez JC, Lebrato J. Biomass stabilization in the anaerobic digestion of wastewater sludges. Bioresour Technol 2006; 97:1179-84. [PMID: 16006121 DOI: 10.1016/j.biortech.2005.05.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2004] [Revised: 03/29/2005] [Accepted: 05/20/2005] [Indexed: 05/03/2023]
Abstract
Sludge stabilization processes include both volatile solid destruction and biomass stabilization. Traditionally, both processes have been considered together, in such a way that, when volatile solid destruction is achieved, the biomass is considered stabilized. In this study, volatile solids reduction and biomass stabilization in the anaerobic digestion of primary, secondary and mixed sludges from municipal wastewater treatment plants were researched in batch cultures by measurements of suspended solids and suspended lipid-phosphate. The estimated kinetic constants were higher in all sludge types tested for the biomass stabilization process, indicating that volatile solids destruction and biomass stabilization are not parallel processes, since the latter one is reached before the former.
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Affiliation(s)
- C Arnaiz
- Departamento de Ingeniería Química y Ambiental, Escuela Universitaria Politécnica, Universidad de Sevilla, Virgen de Africa 7, 41011 Sevilla, Spain.
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Otal E, Arnaiz C, Gutierrez J, Lebrato J. Anaerobic degradation of p-coumaric acid and pre-ozonated synthetic water containing this compound. Biochem Eng J 2004. [DOI: 10.1016/j.bej.2004.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Arnaiz C, Buffiere P, Elmaleh S, Lebrato J, Moletta R. Anaerobic digestion of dairy wastewater by inverse fluidization: the inverse fluidized bed and the inverse turbulent bed reactors. Environ Technol 2003; 24:1431-1443. [PMID: 14733396 DOI: 10.1080/09593330309385687] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper describes the application of the inverse fluidization technology to the anaerobic digestion of dairy wastewater. Two reactors were investigated: the inverse fluidized bed reactor and the inverse turbulent reactor. In these reactors, a granular floating solid is expanded by a down-flow current of effluent or an up-flow current of gas, respectively. The carrier particles (Extendospheres) were chosen for their large specific surface area (20,000 m2m(-3)) and their low energy requirements for fluidization (gas velocity of 1.5 mm s(-1), 5.4 m h(-1)). Organic load was increased stepwise by reducing hydraulic retention time from more than 60 days to 3 days, while maintaining constant the feed COD concentration. Both reactors achieved more than 90% of COD removal, at an organic loading rate of 10-12 kgCOD m(-3) d(-1), respectively. The performances observed were similar or even higher than that of other previously tested fluidized bed technologies treating the same wastewater. It was found that the main advantages of this system are: low energy requirement, because of the low fluidization velocities required; there is no need of a settling device, because solids accumulate at the bottom of the reactor, so they can be easily drawn out and particles with high-biomass content can be easily recovered. Lipid phosphate concentration has been revealed as a good method for biomass estimation in biofilms since it only includes living biomass.
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Affiliation(s)
- C Arnaiz
- Departamento de Ingeniería Química y Ambiental, Escuela Universitaria Politécnica, Universidad de Sevilla, Virgen de Africa 7, 41011 Sevilla, Spain
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