Francisco Osorio

Francisco Osorio
University of Granada | UGR · Department of Civil Engineering

PhD

About

80
Publications
19,120
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1,611
Citations
Introduction

Publications

Publications (80)
Article
Full-text available
This study is about the use of naturally occurring filtering materials for rainwater treatment for drinking water proposal. Crushed gravel, ceramic spheres from natural clays, silica sand and natural zeolite were used as filtering materials. The mineralogical composition of filtering materials was determined, being the illite and mordenite the majo...
Article
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Biodeterioration is one of the most important processes in metal pipeline corrosion, and it can be due to physical, chemical, and biological factors. Coatings rich in silver have been used to inhibit this undesirable phenomenon. In this study, the antimicrobial properties of several silver-containing products used as a coating in pipelines were det...
Article
Full-text available
The removal efficiencies (REs) of twenty-seven pharmaceutically active compounds (PhACs) (eight analgesic/anti-inflammatories, six antibiotics, four β-blockers, two antihypertensives/diuretics, three lipid regulators and four psychiatric drugs) were evaluated in a pilot-scale two-stage mesophilic anaerobic digestion (MAD) system treating thickened...
Article
The goal of this research was to study the operation of an integrated fixed-film activated sludge system (IFAS), in anaerobic/anoxic/aerobic (A2O) configuration for the elimination of emerging pollutants, in particular of 27 pharmaceutical active compounds (PhACs) (eight anti-inflammatory and/or analgesic pharmaceuticals (AIAPs), six antibiotics, f...
Article
Full-text available
The adsorption and electroadsorption of bromide from natural water has been studied in a filter-press electrochemical cell using a commercial granular activated carbon as the adsorbent. During electroadsorption experiments, different voltages were applied (2 V, 3 V and 4 V) under anodic conditions. The presence of the electric field improves the ad...
Article
A pilot-scale anammox biofilter was set up and operated using reject water in order to investigate its nitrogen removal performance and the microbial community present at different stages of operation of this technology. A novel material “Filtralite” was used a support in order to achieve shorter start-up periods and obtain higher nitrogen load rem...
Article
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This research presents the results of a pilot system used for water treatment to be supplied to single-family or small housing nucleus at rural sector. The pilot system is constituted by an up-flow aerated filter with ceramic carrier, followed by a second down-flow filter of silica sand. The pilot plant was installed in a rural sector of the provin...
Article
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This study reports the adsorption capacity of lead Pb2+ and cadmium Cd2+ of biochar obtained from: peanut shell (BCM), “chonta” pulp (BCH) and corn cob (BZM) calcined at 500, 600 and 700 °C, respectively. The optimal adsorbent dose, pH, maximum adsorption capacity and adsorption kinetics were evaluated. The biochar with the highest Pb2+ and Cd2+ re...
Article
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In a pilot plant under the stable‐stage of the two‐stage anaerobic digester, the dynamic of the archaeal, bacterial and eukaryal community structure was studied as well as their link to performance and biogas production. An effective synergic action between microorganisms was reached since biogas production and particularly methane (CH4) generation...
Article
The removal efficiencies (REs) of nineteen pharmaceutically active compounds (PhACs) (six antibiotics-clarithromycin, ofloxacin, sulfadiazine, sulfamethazine, sulfamethoxazole and trimethoprim -, four β-blockers -atenolol, metoprolol, propranolol and sotalol-, two antihypertensives/diuretics -furosemide and hydrochlorothiazide-, three lipid regulat...
Article
In this study, the removal rates of eight anti-inflammatory and/or analgesic pharmaceuticals, AIAPs (acetaminophen, ibuprofen, naproxen, ketoprofen, diclofenac, codeine, indomethacin and propyphenazone) were assessed in a pilot-scale A²O system (including anaerobic/anoxic/aerobic zones), long term operated during two experimental phases using diffe...
Article
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Pollution induced by surface runoff in urban areas constitutes a significant problem. The adoption of control measures aimed at improving the quality of recipient water bodies is a fundamental issue in the management of Mediterranean Basin sewer systems. Previous research in Mediterranean areas using small virtual basins has shown that rainfall reg...
Article
The discovery of anaerobic ammonium oxidation processes led to the development of innovative nitrogen removal technologies, which are more cost-effective and environmentally friendly than conventional activated sludge systems. In this study, the bacterial community structure was determined as well as the nitrogen removal efficiencies in four fixed-...
Research
Full-text available
The IWA Regional Conference on Water Reuse and Salinity Management, IWARESA 2018 will be held from Jun 11 to 15, 2018 in Murcia, Spain. The IWA Regional Conference on Water Reuse and Salinity Management will address the problem of water scarcity induced by climate change in arid and semiarid areas, the use of non-conventional water sources in agric...
Article
BACKGROUND Autotrophic nitrogen removal was evaluated in three bench‐scale bioreactors filled with Filtralite. This configuration is an alternative to the conventional technologies for nitrogen removal. One of the main problems associated with these new technologies, based on anammox (anaerobic ammonium oxidation) processes, is the stability of bio...
Article
Three Canon bench-scale bioreactors with a volume of 2 L operating in parallel were configured as submerged biofilters. In the present study we investigated the effects of a high ammonium concentration (320 mgNH4(+)· L(-1)) and different concentrations of organic matter (0, 100 and 400 mgCOD·L(-1)) on the nitrogen removal capacity and the bacterial...
Conference Paper
Full-text available
El nitrógeno es uno de los contaminantes más importantes en las aguas residuales urbanas y su eliminación, que tradicionalmente se realiza mediante sistemas de nitrificación-desnitrificación (NDN) supone un coste energético importante y es uno de lo limitantes de vertido principales en EDAR de tamaño mediano-grande. La eliminación autotrófica de ni...
Article
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Two-stage technologies have been developed for anaerobic digestion of waste-activated sludge. In this study, the archaeal and bacterial community structure dynamics and bioprocess performance of a bench-scale two-stage anaerobic digester treating urban sewage sludge have been studied by the means of high-throughput sequencing techniques and physico...
Article
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It has been demonstrated that an anaerobic digestion process cannot attain an efficient removal of several amino acids, with methionine being one of the most persistent of these. Thus, the effect that methionine amino acid has over the partial-nitritation process with fixed-biofilm configuration in terms of performance and bacterial community dynam...
Article
The bacterial community structure of 10 different wastewater treatment systems and their influents has been investigated through pyrosequencing, yielding a total of 283486 reads. These bioreactors had different technological configurations: conventional activated sludge (CAS) systems and very highly loaded A-stage systems. A-stage processes are pro...
Article
Full-text available
The use of solvents in desalination processes limits the use of certain materials in the construction of the reverse osmosis membranes. Therefore now the research effort has focused on improving new materials. In particular, nano-structured materials will probably form the basis for new reverse osmosis membrane materials. This study makes a review...
Article
In this study, a lab-scale CANON bioreactor was operated for 260days, decreasing operational temperature from 35°C to 15°C and from 466 to 100mg-N L-1 ammonium. This was done in order to check the feasibility of the acclimation of CANON biomass treating anaerobic digestion supernatant to B-stage influent wastewater operational conditions. Results s...
Article
Full-text available
Identification of anaerobic ammonium oxidizing (anammox) bacteria by molecular tools aimed at the evaluation of bacterial diversity in autotrophic nitrogen removal systems is limited by the difficulty to design universal primers for the Bacteria domain able to amplify the anammox 16S rRNA genes. A metagenomic analysis (pyrosequencing) of total bact...
Data
Full-text available
Table S1 shows main operational parameters of the five bioreactors analyzed in this study. Table S2 offers the results of the in silico primer testing using RDP database for all bacterial phyla. Table S3 shows the in silico calculated coverage of anammox bacteria species by primer 530F using the RDP database. Figure S1 shows the original, interpola...
Article
Bacterial community structure of full-scale anammox bioreactor is still mainly unknown. It has never been analyzed whether different anammox bioreactor configurations might result in the development of different bacterial community structures among these systems. In this work, the bacterial community structure of six full-scale autotrophic nitrogen...
Article
Autotrophic nitrogen removal technologies have proliferated through the last decade. Among these, a promising one is the membrane bioreactor (MBR) Anammox, which can achieve very high solids retention time and therefore sets a proper environment for the cultivation of anammox bacteria. In this sense, the MBR Anammox is an efficient technology for t...
Article
Full-text available
This paper describes a new method for predicting trihalomethanes (THMs) presence in networks of water supply systems, using a low-cost device that permits a fast monitoring of concentrations without need of complex analysis made in laboratories. This method, based on statistical models, allows the estimation of THM concentration by monitoring param...
Article
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Full-scale applications of autotrophic nitrogen removal technologies for the treatment of digested sludge liquor have proliferated during the last decade. Among these technologies, the aerobic/anoxic deammonification process (DEMON) is one of the major applied processes. This technology achieves nitrogen removal from wastewater through anammox meta...
Article
This article describes how biofuel for vehicles was obtained from the biogas produced during the anaerobic digestion process at a wastewater treatment plant, and analyzes the extraction of CO2 by chemical absorption with mono-ethanol-amine at 20%. This research study tested the viability of a low pressure process (1.250 bar) for treating biogas wit...
Article
Full-text available
Reverse osmosis is currently the most important and commonly used desalination technique. The objective of this paper is to review the history of reverse osmosis membranes, to outline the current state of the art and insight into the tendencies being. The current market of RO membranes is focused on thin-film composite polyamide membranes, which ar...
Article
Full-text available
Nitrogen is a main contaminant of wastewater worldwide. Novel processes for nitrogen removal have been developed over the last several decades. One of these is the partial nitritation process. This process includes the oxidation of ammonium to nitrite without the generation of nitrate. The partial nitritation process has several advantages over tra...
Data
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Article
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Biological wastewater treatment (WWT) frequently relies on biofilms for the removal of anthropogenic contaminants. The use of inert carrier materials to support biofilm development is often required, although under certain operating conditions microorganisms yield structures called granules, dense aggregates of self-immobilized cells with the chara...
Article
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This study was on the technical and biological characteristics of a partial-SHARON submerged-filter bioreactor of 3 L. The main focus was the influence of the hydraulic retention time (HRT) on biofilms. For this purpose, we used molecular tools based on the partial 16S rRNA genes. The results showed that the HRT may affect the nitrification process...
Article
Full-text available
The process of internal erosion in an embankment dam with granular filters can be divided in five stages : (i) formation of the crack through the core, (ii) erosion of material from the crack walls due to the shear stress applied by flowing water, (iii) transport of eroded particles to the filter, (iv) retention or percolation of these particles wi...
Article
The performance of a bench-scale submerged membrane bioreactor (MBR) equipped with ultrafiltration membranes (Zenon®) was investigated for the treatment of domestic wastewater under different mixed liquor suspended solid (MLSS) concentration. The results showed the capacity of the MBR systems to remove high concentration in organic matter (COD and...
Article
Full-text available
Excessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters’ performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h−1, for an organic loading rate of 51 g C m−3 h−1 and a nitrogen loading rate of 13 g NH4-N m−3 h−1, one with the bi...
Article
The performance of a wastewater bench-scale membrane bioreactor (MBR) treatment plant using pure oxygen conditions was monitored daily to provide aerobic conditions. The results showed the capacity of the MBR system to remove organic material over at hydraulic retention time (HRT) of 12h and 18h. The alpha-factors of aeration were determined at thr...
Article
Full-text available
This study of cut and fill slopes, some untreated, some hydroseeded in the conventional, some hydroseeded with different sludge dosages, and another only with sewage sludge and seeds with no slurry mix to look at the impacts on erosion and vegetable growth. After two vegetation cycles, erosion on an untreated control plot was on average 2.2 times l...
Conference Paper
The European normative, implemented in the Spanish national legislation in 2003, reduced the acceptable maximum concentration of THMs in drinking water, from 150 to 100 μ/L. This implies that many existent facilities could not achieve this requirement. Generally speaking, the problems related to THMs in the area studied occur in certain periods dur...
Article
Full-text available
In recent years, various technologies have been developed for the removal of nitrogen from wastewater that is rich in nitrogen but poor in organic carbon, such as the effluents from anaerobic digesters and from certain industries. These technologies have resulted in several patents. The core of these technologies is some of the processes and patent...
Article
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This research study used sewage sludge from urban wastewater treatment plants to restore road embankments. The results have been used to propose a series of basic principles for the application of sludge in this context. In the study, six experimental plots (each composed of one cut slope and one fill slope) were set up on a highway located in the...
Article
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Because of the growing need to eliminate undesirable microorganisms in different industrial treatments, mainly in the food and agricultural sector and the pharmaceutical industry, a number of increasingly effective systems for disinfection to eliminate microorganisms have been devised. This article analyzes different methods to eliminate and/or sig...
Article
The performance of a wastewater bench-scale ultrafiltration membrane bioreactor (MBR) treatment plant using pure oxygen to supply the aerobic conditions for 95 days was studied. The results showed the capacity of the MBR systems to remove organic material under a hydraulic retention time of 12h and a sludge retention time of 39.91 days. Aeration re...
Article
Water pollution not only affects drinking water, but also rivers, lakes and oceans all over the world and is affecting both aquatic and terrestrial life. For these reasons, water pollution control is an important subject to face up for the governments and industries all around the world. The main problem of the wastewater produced by the industries...
Article
This article analyses the relation between wastewater quality parameters and particle size distribution (PSD) in three real wastewater treatment plants with different biofilm technologies: submerged biofilter system, trickling filter system, and rotating biological contactor system. The main quality parameters, (suspended solids, turbidity and COD)...
Article
The main aim of the present research was to check the applicability and optimise the design parameters of biological aerated filters (BAFs) for the treatment of effluents from the food and agricultural industries, and specifically in this study, from citrus plants. Expanded clay was used as a support material. Two different material sizes were test...
Conference Paper
Full-text available
El equipo de Dirección de la Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos emprendió hace algún tiempo una serie de medidas encaminadas a facilitar el proceso de inserción y adaptación de sus estudiantes a la titulación que cursan y de este modo lograr la mejora de su rendimiento académico. El objetivo principal de estas medi...
Conference Paper
Full-text available
El equipo de Dirección de la E.T.S. de Ingenieros de Caminos, Canales y Puertos ha emprendido una serie de Acciones Docentes encaminadas a facilitar el proceso de inserción y adaptación de los estudiantes a la titulación, a acercar los alumnos a la Universidad, a la Escuela y a su Plan de Estudios, a mejorar la calidad de la enseñanza y a asegurar...
Article
Poisson rectangular pulses (PRPs) model describes the probabilistic nature of the average intensity and duration of storms. However, no consideration is given to the peak intensity or the relative position of the peak intensity of the storm. PRP model simplifies the procedure, and makes it attractive to hydrologists; however it can often produce in...
Article
This article presents a Monte Carlo simulation model based on Clayton copula to generate synthetic sequences of rainfall storms whose likelihood of occurrence is in consonance with historical records. These sequences are used as rainfall input data for the Storm Water Management Model to analyse a 3 km watershed in the city of Granada, Spain. The o...
Article
The main objective of this investigation consists in the biogas purification coming from the anaerobic digestion of sludges in a wastewater treatment plant, in order to be used later as biofuel for vehicles. This article consists of the optimization of the biogas desulphurization. In our case, this process was achieved in a chemical way. Besides th...
Article
Full-text available
Recent research shows the benefits derived from applying compost and sludge to road embankments to enhance the cover crop and reduce soil loss due to erosion, particularly in arid environments. Following this line of research, the study described in this paper analyzes and compares the use of sludge and compost for the purposes mentioned. In the fi...
Article
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The protection and conservation of natural resources is one of the main priorities of modern society. Water is perhaps our most valuable resource, and thus should be recycled. Many of the current recycling techniques for polluted water only concentrate the pollutant without degrading it or eliminating it. In this sense, advanced oxidation processes...
Article
The first phase of the investigation whose results are presented in this article, consists on the optimization of the biogas desulphurization. In our case this process was made by chemical way. Besides the scrubbing towers, the pilot plant used included filters of activated carbon at the end of the line. The H2S inflow concentrations were quite hig...
Article
Full-text available
Virtually no mention is made of backwashing in published research on biofilm modeling. Most of the authors who include it in their models assume that the biofilm has a set thickness after backwashing, although other proposals have also been made. The experimental study described in this article provides experimental data to test or reject the possi...
Article
The presence of nitrogen in wastewater can cause eutrophication as well as health problems. Recent, more restrictive, legislation in Europe means that wastewater treatment systems should now be able to remove nitrogen; in many cases older plants, which were originally built without this objective, are currently being modified to include it. This pa...
Article
Full-text available
While different kinds of compost have been tested for highway revegetation, sewage sludge has only been used for agricultural purposes. In this work, its application for helping vegetation establishment on roads embankments is studied. Testing areas measuring 4x5m were constructed on a new highway embankment in an arid location. Several variables a...
Article
The primary objective of this research study was to test the applicability and optimize the design parameters of a system of biological aerated filters in order to obtain an optimal effluent from the citrus industry, which would allow its drainage into the municipal sewer system. Expanded clay was used as a support material. After experimenting wit...
Article
Full-text available
This paper describes how compost, a by-product generated by solid waste treatment plants, can be usefully applied to road embankments to prevent erosion. Our study analyzed this process in terms of the following variables: (1) location and orientation; (2) embankment slope; (3) soil and compost characteristics; (4) compost dosage; (5) vegetation sp...
Article
The presence of nitrogen in wastewater can cause eutrophication as well as health problems. Recent, more restrictive, legislation in Europe means that wastewater treatment systems should now be able to remove nitrogen; in many cases older plants, which were originally built without this objective, are currently being modified to include it. This pa...