Luis Rodríguez

Luis Rodríguez
University of Castilla-La Mancha · Department of Chemical Engineering

PhD Chemical Engineering

About

50
Publications
5,508
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1,700
Citations
Additional affiliations
January 1992 - present
University of Castilla-La Mancha
Position
  • Professor (Associate)

Publications

Publications (50)
Chapter
The combination of low intensity electric fields and plants, named as electrokinetic-assisted phytoremediation, to carry out the decontamination of polluted soils has been proposed as a more ecological alternative to the addition of chelating agents in order to increase the availability of pollutants. It results from the electrolysis of water, whic...
Article
Full-text available
Studies regarding how environmental risk evolves in abandoned mining areas in the medium term have been seldom carried out. The answer to this question is not obvious despite it is essential in order to evaluate the need to take urgent control measures in these areas. Fifty-two samples corresponding to soils (from natural pasture and arable lands)...
Article
Studies regarding how environmental risk evolves in abandoned mining areas in the medium term have been seldom carried out. The answer to this question is not obvious despite it is essential in order to evaluate the need to take urgent control measures in these areas. Fifty-two samples corresponding to soils (from natural pasture and arable lands)...
Article
BACKGROUND This work develops a simplified mathematical model to predict the performance of a bioelectrochemical system (BES), first working as a microbial fuel cell (MFC) and then as a microbial electrolysis cell (MEC), for the recovery of dissolved metals (Fe, Cu, Sn and Ni) from simulated industrial wastewater. Experimental data from a previous...
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Full-text available
BACKGROUND This work studied the treatment and metal recovery of a synthetic acid mine drainage (AMD) containing 500 mg L−1 of Cu2+ and Fe+3 and 50 mg L⁻¹ of Ni²⁺ and Sn²⁺ by using a bioelectrochemical system (BES). The presence of electroactive bacteria improved the performance of such reactor configuration, in contrast to systems with abiotic ano...
Article
Electrokinetic-assisted phytoremediation (EKPR) has been recently proposed for the removal of pesticides from polluted soils. In this work, we report the results from an EKPR experiment that was carried out in a mesocosm mock-up of 0.386 m3 using ryegrass (Lolium perenne L.) and a low permeability soil spiked with atrazine. Plants were initially gr...
Article
In this work, the dehalogenation of 2,4-D, was studied by using two novel treatments based on Bioelectrochemical Systems (BES): the Microbial Fuel Cell (MFC) and the Microbial Electrolysis cell (MEC). Both technologies demonstrated the feasibility of the dehalogenation of the 2,4-Dichlorophenoxyacetic acid (2,4-D) molecule on an abiotic cathode. Fr...
Article
Phytoremediation, an ecological remediation technology based on the use of plants, can be combined with electrokinetic treatment for the removal of both inorganic and organic pollutants from soils. Electrokinetic-assisted phytoremediation (EKPR) of atrazine was tested in a mesocosm scale experiment using ryegrass (Lolium perenne L.). Two mock-ups w...
Article
Atrazine (ATR) continues being one of the most frequently detected pesticides in natural waters and soils. In this work, an electrokinetic-assisted phytoremediation pot test (EKPR) was performed for the remediation of an atrazine-spiked soil; a low electric voltage gradient (1 V cm⁻¹) with two different electric field operation times (6 and 24 h pe...
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Full-text available
The present work studies the removal of nutrients (nitrate and phosphate) from a synthetic wastewater simulating a secondary treatment effluent using the microalgae Chlorella vulgaris in autotrophic photobioreactors, together with an analysis of the critical points affecting the scaling-up process from laboratory to pilot scale. Laboratory experime...
Article
Electrokinetic-assisted phytoremediation (EKPR) has been recently proposed by us to remediate soils contaminated by atrazine, a common pesticide in agrarian areas. The goal of this work was to study the differences of electrochemical and biological processes occurred in the different soil sections (anode, cathode and interelectrode section) of the...
Article
An electrokinetic-assisted phytoremediation test using maize (Zea mays L.) was conducted in order to assess the role of the electric field on the enhancement of plant uptake and degradation of the moderate polar pesticide atrazine in spiked soils. Twelve different treatments, including two different initial atrazine soil doses (5 and 10 mg kg-1) an...
Article
Twelve selected aggregates sintered from granite-marble-sepiolite wastes containing different proportions of powdered carbon fiber (FC) and thermoplastic (P) were studied by Rietveld X-ray diffraction, microscopy and thermal techniques to assess the influence of heating temperature (1100, 1125 or 1150 °C), dwell time (4, 8 or 16 min) and additive o...
Article
A one-year leaching experiment has been conducted in order to assess the effectiveness of several amendments on metal immobilization in mine tailings from an old Pb/Zn mining area of Central Spain (San Quintín mine). Demineralized water was used as leaching solution, selecting doses equivalent to the annual rainfall conditions of the studied area....
Article
The objective of the present work is to study the influence of the wastewater salinity concentration on the performance of a Constructed Wetland-Microbial Fuel Cell (CW-MFC) for simultaneous water pollution control and electricity generation. The work has been carried out under the hypothesis that increasing the salinity may improve the electricity...
Article
Three different wastes have been assessed for lightweight aggregate (LWA) manufacturing: granite and marble sludge (COR), sepiolite rejections (SEP) and polyethylene-hexene thermoplastics (P). A preliminary study of the physical and chemical properties of the raw materials was carried out to design proper batches. It was mixed 10% SEP with 90% COR...
Article
Abbreviations: BCR-SEP: optimized BCR sequential extraction procedure; b.d.l: below the detection limit; F1: weakly adsorbed, exchangeable and water- and acid- soluble fraction; F2: reducible fraction; F3: oxidable fraction; F4: residual fraction; HM: heavy metal; ICP-MS: inductively coupled plasma-mass spectroscopy; LOI: loss on ignition; LWA: li...
Article
Pollution of soil and groundwater by atrazine has become an increasing environmental concern in the last decade. A phytoremediation test using plastic pots was conducted in order to assess the ability of several crops and grasses to remove atrazine from a soil of low permeability spiked with this herbicide. Four plant species were assessed for thei...
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Full-text available
Single extraction methods have been extensively used to assess the availability of metals in polluted soils. This work focused on checking the feasibility of several chemicals, i.e. CaCl2, EDTA, diethylenetriaminepentaacetic acid (DTPA) and a low-molecular-weight organic acid mixture (rhizosphere-based method), to be used as extractants for mercury...
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Full-text available
Semiconductor photocatalysis is an effective method used to degrade organophosphorus compounds. Here, the potential of a commonly mixed oxide semiconductor, ZnO/CuO, has been examined to degrade methyl parathion. Sono-coprecipitation method was used to provide ZnO/CuO nanocomposites, and it was applied to photocatalytic and sono-photocatalytic degr...
Article
Washing aggregate sludge (WAS) from a gravel pit and sewage sludge (SS) from a wastewater treatment plant (WWTP) were analysed in terms of their physical, mineral and chemical characteristics. Both waste materials were mixed, milled and made into granules, pre-heated for 2 and 5 min and sintered in a rotary kiln at temperatures between 1175 °C and...
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Full-text available
The goal of this research was to assess the potential of several industrial wastes to immobilize metals in two polluted soils deriving from an old Pb/Zn mine. Two different approaches were used to assess the performance of different amendments: a chemical one, using extraction by ethylenediaminetetraacetic acid (EDTA), and a biological one, using L...
Article
This paper studies the simulation of carbon degradation in pilot scale solid waste composting processes using first-order kinetic models previously calibrated by laboratory experiments at different temperatures. Different solid biowastes (olive mill waste, winery waste, sewage sludge and reed biomass) were used. Three mixtures were prepared from co...
Article
The solubility of used frying oil in high pressure CO2 modified with four cosolvents (ethanol, methanol, acetone, and hexane) has been determined using a dynamic flow method. The aim of the work has been to analyze and compare the oil solubilities in CO2–cosolvent mixtures to those attained with pure CO2 in order to determine how the use of cosolve...
Article
The effect of the earthworm Lumbricus terrestris L. on metal availability in two mining soils was assessed by means of chemical extraction methods and a pot experiment using crop plants. Results from single and sequential extractions showed that L. terrestris had a slight effect on metal fractionation in the studied soils: only metals bound to the...
Article
The extraction of triglycerides from used frying oil with liquid and supercritical ethane has been studied in a semibatch system at different temperatures (25–80°C) and pressures (150–250kg/cm2). It has been found that isobaric decreases of temperature and isothermal increases of pressure lead to both increasing extraction yields and decreasing sep...
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Full-text available
The changes in heavy metal speciation and physicochemical parameters of soils after one pass of the soil through earthworm (Lumbricus terrestris) gut have been studied. Pot experiments were conducted with three different types of soils that showed a wide range of compositions and physicochemical parameters. Analysis of total metals, BCR sequential...
Article
Solubility of used frying oil in three compressed gases (propane, carbon dioxide, and ethane) has been determined using a dynamic flow method. The aim of the work has been to analyze and compare the solubilities in such gases in order to determine the best processing conditions leading to selective separation of nondegradated triglycerides from pol...
Article
Supercritical extraction with pure and modified CO2 has been used for the fractionation of waste frying oil at different temperature and pressure conditions (25−80 °C and 300−400 kg/cm2). The cosolvents used to modify the CO2 behavior were ethanol, methanol, acetone, and hexane. They were selected because of their capacity to form hydrogen bonds. B...
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Full-text available
In order to assess their practical capability for the absorption and accumulation of Pb, Zn, and Cu, five common crop plants, i.e. maize (Zea mays), sunflower (Helianthus annuus), canola (Brassica napus), barley (Hordeum vulgare) and White lupine (Lupinus albus) were tested in pot experiments using six soil samples taken from mine tailings, pasture...
Article
A pot experiment was conducted in order to assess the effect of the earthworm Eisenia fetida on the uptake of Pb, Zn, Cd and Cu from soils polluted by mining activities using maize (Zea mays) and barley (Hordeum vulgare). Results from single and sequential extractions showed that the soil chemical partitioning of heavy metals was significantly chan...
Article
Aqueous solutions of polyethylenimines (PEI) are usually used in the manufacture process of paper from pulps to improve the physical strength, and the ink and coatings fixation and to facilitate the printing. When PEI is used as a liquid cationic flocculant in water treatment it is supplied as a cheaper hydrochloride salt. The hydrochloride salt fo...
Article
Soil pollution by lead, zinc, cadmium and copper was characterized in the mine tailings and surrounding soils (arable and pasture lands) of an old Spanish Pb-Zn mine. Sixty soil samples were analyzed, determining the total metal concentration by acid digestion and the chemical fractionation of Pb and Zn by the modified BCR sequential extraction met...
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Full-text available
High-biomass crops can be considered as an alternative to hyperaccumulator plants to phytoremediate soils contaminated by heavy metals. In order to assess their practical capability for the absorption and accumulation of Hg in shoots, barley, white lupine, lentil, and chickpea were tested in pot experiments using several growth substrates. In the f...
Article
Mixtures of lithium bromide and organic salts of sodium and potassium (formate, acetate and lactate) have been evaluated as alternative absorbents for absorption refrigeration machines. The main objective is to overpass the limitations of lithium bromide and improve the characteristics and the efficiency of the refrigeration cycle. In order to sele...
Article
Waste frying oils are a pollution source that may be eliminated by oil recycling. A possible technology to recycle this oil is extraction with dense gases. In this work we investigate the use of sub and supercritical carbon dioxide to recover the undegraded triglycerides fraction from the waste oil. The experiments have been performed in a semicont...
Chapter
Due to a low environmental impact, phytoremediation could become an attractive method to remove heavy metals from contaminated soils. The work reported here describes preliminary results for the recovery of mercury from contaminated soils by phytoextraction. This process involves the removal of mercury by plants followed by combustion of the plant...
Article
The present study has been undertaken to investigate a process that might remove inorganic mercury from mine waste water streams by using a compound of the crandallite type. In this work, an artificial amorphous crandallite, Ca 0.5 Sr0.5 Al3(OH)6(HPO 4)(PO4), was synthesized in our laboratory and studied for the separation, removal and recovery of...
Article
A field experiment was carried out in order to test the potential mercury uptake of three agricultural crop plants (barley, wheat and yellow lupin) from polluted soils. Soil samples were taken and characterized before the culture period. The crops were harvested and the total mercury concentration of the plants was determined. The results indicate...
Article
Conventional aqueous impregnated W/HZSM-5 catalysts have been modified by treatment with an 1M ammonia aqueous solution prior to the calcination step, obtaining tungsten loading in the range 0.02–0.2wt.% UV diffuse reflectance spectroscopy (UV DRS), X-ray diffraction (XRD), temperature-programmed reduction (TPR), temperature-programmed desorption o...
Article
A new methane partial oxidation (MPO) catalyst has been prepared by grafting MoO2(acac)2 (acac: acetylacetonate ligand) onto the surface of dried HZSM-5 zeolite. This reaction was performed in an organic solvent under an inert atmosphere with the exclusion of water from the reaction. It was shown by FT-IR spectroscopy that the reaction takes place...
Article
Two samples of silica with different surface area have been used in the preparation of silica-supported tungsten oxide catalysts with W loading ranging from 0.8 to 15.8wt%. Both catalyst series have been tested in the partial oxidation of methane to formaldehyde with molecular oxygen at atmospheric pressure. It has been shown that both surface area...
Article
The partial oxidation of methane to formaldehyde using molecular oxygen as oxidant was studied over W/HZSM-5 catalysts with tungsten loading varying from 0.3% to 11.9%. The catalysts were characterized by means of XRD, UV diffuse reflectance spectroscopy, BET, TPR and TPD of ammonia. Three different types of supported species were detected: tetrahe...
Article
The ion exchange kinetics of DL-lysine monohydrochloride on Amberlite IRA-420 have been studied. Ionic diffusivity of hydroxyl anion, which is supposed to be equal to the interdiffusion coefficient, has been evaluated by fitting experimental kinetic data to a theoretical model based on the continuity equation of the CI" anion in solution filling th...
Article
Ion exchange equi1ibria of DL-lysine monohydrochloride on Amberlite IRA-420 were studied at 293, 303 and 313 K and different ion concentrations. A model which accounts for the non ideal behaviour of the different species invo1ved in both liquid phase and resin phase was developed from a general model based on the mass action law. Activity coefficie...

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Projects (4)
Project
Pollution caused in soil and surface and groundwater by waste from mining activities is among the main environmental concerns at the Spanish, European and global levels. Between the different types of mining, metal mining is especially worrisome due to the dispersion of toxic metals such as Pb, Cd, Zn, As, Cu, etc. and the generation, from the oxidation of the pyrite waste, of the so-called acidic mine drainage (AMD). The E-BIORE2MIN Project proposes an innovative and sustainable approach to the solution of the environmental problem considered, since its objective is the development of novel combinations of biological and electrochemical technologies for the treatment of mine tailings (fine-grained mine waste) and AMD, focusing on the recovery of the resources contained therein, including metals and/or rare earth elements, reclaimed water, biomass and/or energy; that is, in line with the circular economy concept.
Project
Development of ceramic lightweight aggregates from wastes and study of their practical application