This page has only limited features, please log in for full access.

Dr. José Alberto Herrera-Melián
Universidad Las Palmas de Gran Canaria

Basic Info


Research Keywords & Expertise

0 Constructed Wetlands
0 Marine Pollution
0 Wastewater Treatment
0 advanced oxidation process
0 waste stabilization ponds

Fingerprints

Constructed Wetlands
Wastewater Treatment

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 12 September 2020 in Water
Reads 0
Downloads 0

Nowadays, activities associated with industries, cities, and leisure generate a number of different wastes, including many chemical pollutants that enter the environment and negatively affect the wildlife. Some of them are emerging organic contaminants (EOCs), which include UV filters and stabilizers, antineoplastic agents, and natural and synthetic steroid hormones, among others. It is well demonstrated that the presence of this kind of contaminants may produce adverse effects in aquatic environments and also in marine organisms. Even though the Canary Islands (Spain) are one of the most biodiverse parts of the temperature regions of the world, little is known about the presence of these substances in the environment and organisms in the archipelago. For that purpose, the objective of this work was to evaluate the presence of some UV filters, cytostatic compounds, and hormones in water (wastewater and seawater), sediments, and marine organisms. Moreover, we evaluated conventional and natural wastewater treatment plants (WWTPs) to study the removal efficiencies of these target compounds. UV filters and stabilizers were found in all the analysed samples and were the only target family found in seawater (with UV-329 appearing at all the locations at concentrations between 67.5 and 859 ng L−1). Some cytostatic compounds were detected in hospital wastewater at concentrations between 375.8 and 1851 ng L−1, but not in the analysis of sludge or fish samples. Hormones were detected in wastewater, sludge, and fish samples, and their removal in the natural treatment system (over 76% for all the hormones) allowed to prove it as an efficient technology for the elimination of these EOCs from urban wastewaters in small communities.

ACS Style

Maria Esther Torres-Padrón; Sarah Montesdeoca-Esponda; Sergio Santana-Viera; Rayco Guedes-Alonso; José Alberto Herrera-Melián; Zoraida Sosa-Ferrera; José Juan Santana-Rodríguez. An Update of the Occurrence of Organic Contaminants of Emerging Concern in the Canary Islands (Spain). Water 2020, 12, 2548 .

AMA Style

Maria Esther Torres-Padrón, Sarah Montesdeoca-Esponda, Sergio Santana-Viera, Rayco Guedes-Alonso, José Alberto Herrera-Melián, Zoraida Sosa-Ferrera, José Juan Santana-Rodríguez. An Update of the Occurrence of Organic Contaminants of Emerging Concern in the Canary Islands (Spain). Water. 2020; 12 (9):2548.

Chicago/Turabian Style

Maria Esther Torres-Padrón; Sarah Montesdeoca-Esponda; Sergio Santana-Viera; Rayco Guedes-Alonso; José Alberto Herrera-Melián; Zoraida Sosa-Ferrera; José Juan Santana-Rodríguez. 2020. "An Update of the Occurrence of Organic Contaminants of Emerging Concern in the Canary Islands (Spain)." Water 12, no. 9: 2548.

Journal article
Published: 23 June 2020 in Sustainability
Reads 0
Downloads 0

In this study, pilot-scale hybrid constructed wetlands (CWs) and multistage horizontal subsurface flow CWs (HF CWs) have been studied and compared for the treatment of raw urban wastewater. In the hybrid CWs, the first stage was a mulch-based horizontal subsurface flow CW and the second stage was a vertical subsurface flow CW (VF CW). The VF CWs were used to determine if sand could improve the performance of the hybrid CW with respect to the mulch. In the multistage HFs, mulch, gravel and sand were used as substrates. The effect of water height (HF10: 10 cm vs. HF40: 40 cm) and surface loading rate (SLR: 12 vs. 24 g Chemical Oxygen Demand (COD)/m2d) has been studied. The results show that the use of sand in the vertical flow stage of the hybrid CW did not improve the average performance. Additionally, the sand became clogged, while the mulch did not. The effect of water height on average pollutant removal was not determined but HF10 performed better regarding compliance with legal regulations. With a SLR of 12 g COD/m2d, removals of HF10 were: 79% for COD, 75% for NH4+-N, 53% for dissolved molybdate-reactive phosphate-P (DRP), 99% for turbidity and 99.998% for E. coli and total coliforms. When SLR was doubled, removals decreased for NH4+-N: 49%, DRP: −20%, E coli and total coliforms: 99.5–99.9%, but not for COD (85%) and turbidity (99%). Considering the obtained results and the simplicity of the construction and operation of HFs, HF10 would be the most suitable choice for the treatment of raw urban wastewater without clogging problems.

ACS Style

José Herrera-Melián; Mónica Mendoza-Aguiar; Rayco Alonso-Guedes; Pilar García-Jiménez; Marina Carrasco-Acosta; Ezio Ranieri. Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater. Sustainability 2020, 12, 5102 .

AMA Style

José Herrera-Melián, Mónica Mendoza-Aguiar, Rayco Alonso-Guedes, Pilar García-Jiménez, Marina Carrasco-Acosta, Ezio Ranieri. Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater. Sustainability. 2020; 12 (12):5102.

Chicago/Turabian Style

José Herrera-Melián; Mónica Mendoza-Aguiar; Rayco Alonso-Guedes; Pilar García-Jiménez; Marina Carrasco-Acosta; Ezio Ranieri. 2020. "Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater." Sustainability 12, no. 12: 5102.

Editorial
Published: 03 March 2020 in Sustainability
Reads 0
Downloads 0

An important part of the environmental degradation suffered by the planet is caused by the discharge of untreated or poorly treated wastewater. Industrial, urban, and agricultural wastewater contain many different types of pollutants such as biodegradable and nonbiodegradable organic matter, suspended solids, turbidity, nutrients, heavy metals, pesticides, pathogens, etc. All of these pose a threat to the environment and human health, so the selected treatment techniques must be adapted to their nature in order to optimize their removal. In addition to efficiency, wastewater treatment methods must be sustainable, not only from an environmental point of view, but also economically and ethically. As a result, no technological dependence should be generated in less developed countries or communities. Therefore, this Special Issue deals with improvements in various aspects of wastewater treatment including different aspects of water treatment such as the development of mathematical models, the application of life cycle techniques, or the experimental optimization of wastewater treatment methods. Thirteen articles were accepted covering some of the most relevant fields of wastewater treatment: activated sludge, nanoparticle treatment, constructed wetlands, energy–water nexus, nutrient recovery, eco-friendly sorbents, and reverse osmosis.

ACS Style

José Alberto Herrera Melián. Sustainable Wastewater Treatment Systems (2018–2019). Sustainability 2020, 12, 1940 .

AMA Style

José Alberto Herrera Melián. Sustainable Wastewater Treatment Systems (2018–2019). Sustainability. 2020; 12 (5):1940.

Chicago/Turabian Style

José Alberto Herrera Melián. 2020. "Sustainable Wastewater Treatment Systems (2018–2019)." Sustainability 12, no. 5: 1940.

Review
Published: 18 March 2019 in Journal of Chemical Technology & Biotechnology
Reads 0
Downloads 0

Mercury and chromium represent two important elements for their environmental concern and strong impact on human health. Several technologies are available to clean up the environment from these kinds of contaminants, but most of them are costly and difficult to use to get optimum results. Currently, phytoextraction is an effective and affordable technological solution used to extract or remove metal from contaminated soil and water by the use of plant ability as tools. This technology is environment‐friendly and potentially cost‐effective. This paper aims to compile some information about the two metals of mercury and chromium (Hg and Cr) sources, effects and their possible treatment by phytoextraction a branch of phytoremediation technologies aimed to face front metal/metalloid pollution. This article is protected by copyright. All rights reserved.

ACS Style

Ezio Ranieri; Konstantinos Moustakas; Meri Barbafieri; Ada Cristina Ranieri; José Alberto Herrera-Melián; Andrea Petrella; Franca Tommasi. Phytoextraction technologies for mercury‐ and chromium‐contaminated soil: a review. Journal of Chemical Technology & Biotechnology 2019, 95, 317 -327.

AMA Style

Ezio Ranieri, Konstantinos Moustakas, Meri Barbafieri, Ada Cristina Ranieri, José Alberto Herrera-Melián, Andrea Petrella, Franca Tommasi. Phytoextraction technologies for mercury‐ and chromium‐contaminated soil: a review. Journal of Chemical Technology & Biotechnology. 2019; 95 (2):317-327.

Chicago/Turabian Style

Ezio Ranieri; Konstantinos Moustakas; Meri Barbafieri; Ada Cristina Ranieri; José Alberto Herrera-Melián; Andrea Petrella; Franca Tommasi. 2019. "Phytoextraction technologies for mercury‐ and chromium‐contaminated soil: a review." Journal of Chemical Technology & Biotechnology 95, no. 2: 317-327.

Journal article
Published: 25 January 2019 in Sustainability
Reads 0
Downloads 0

In this study, the effects of plants on the performance and bacterial community structure of palm mulch-based vertical flow constructed wetlands was studied. The wetlands were built in August 2013; one of them was planted with Canna indica and Xanthosoma sp., and the other one was not planted and used as a control. The experimental period started in September 2014 and finished in June 2015. The influent was domestic wastewater, and the average hydraulic surface loading was 208 L/m2d, and those of COD, BOD, and TSS were 77, 57, and 19 g/m2d, respectively. Although the bed without plants initially performed better, the first symptoms of clogging appeared in December 2014, and then, its performance started to fail. Afterwards, the wetland with plants provided better removals. The terminal restriction fragment length polymorphism (T-RFLP) analysis of Enterococci and Escherichia coli in the effluents suggests that a reduction in their biodiversity was caused by the presence of the plants. Thus, it can be concluded that the plants helped achieve better removals, delay clogging, and reduce Enterococci and E. coli biodiversity in the effluents.

ACS Style

Marina Carrasco-Acosta; Pilar Garcia-Jimenez; José Alberto Herrera-Melián; Néstor Peñate-Castellano; Argimiro Rivero-Rosales. The Effects of Plants on Pollutant Removal, Clogging, and Bacterial Community Structure in Palm Mulch-Based Vertical Flow Constructed Wetlands. Sustainability 2019, 11, 632 .

AMA Style

Marina Carrasco-Acosta, Pilar Garcia-Jimenez, José Alberto Herrera-Melián, Néstor Peñate-Castellano, Argimiro Rivero-Rosales. The Effects of Plants on Pollutant Removal, Clogging, and Bacterial Community Structure in Palm Mulch-Based Vertical Flow Constructed Wetlands. Sustainability. 2019; 11 (3):632.

Chicago/Turabian Style

Marina Carrasco-Acosta; Pilar Garcia-Jimenez; José Alberto Herrera-Melián; Néstor Peñate-Castellano; Argimiro Rivero-Rosales. 2019. "The Effects of Plants on Pollutant Removal, Clogging, and Bacterial Community Structure in Palm Mulch-Based Vertical Flow Constructed Wetlands." Sustainability 11, no. 3: 632.

Article
Published: 05 January 2018 in Water
Reads 0
Downloads 0

A hybrid constructed wetland mesocosm has been used for the treatment of raw urban wastewater. The first stage was a mulch-based, subsurface, horizontal flow constructed wetland (HF). The HF achieved good removals of COD (61%; 54 g/m2·day) and Total Suspended Solids (84%; 29 g/m2·day). The second stage was composed of vertical flow constructed wetlands (VF) that were employed to study the effect of substrate (gravel vs. mulch), feeding mode (continuous vs. intermittent) and the number of stages (1 vs. 2) on performance. High hydraulic and organic surface loadings (513–583 L/m2·day and 103–118 g/m2·day of COD) were applied to the reactors. The mulch was more efficient than gravel for all the parameters analyzed. The continuous feeding allowed a 3 to 6-fold reduction of the surface area required.

ACS Style

José Alberto Herrera-Melián; Alejandro Borreguero-Fabelo; Javier Araña; Néstor Peñate-Castellano; José Alejandro Ortega-Méndez. Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems. Water 2018, 10, 39 .

AMA Style

José Alberto Herrera-Melián, Alejandro Borreguero-Fabelo, Javier Araña, Néstor Peñate-Castellano, José Alejandro Ortega-Méndez. Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems. Water. 2018; 10 (1):39.

Chicago/Turabian Style

José Alberto Herrera-Melián; Alejandro Borreguero-Fabelo; Javier Araña; Néstor Peñate-Castellano; José Alejandro Ortega-Méndez. 2018. "Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems." Water 10, no. 1: 39.

Journal article
Published: 31 May 2017 in Environmental Science and Pollution Research
Reads 0
Downloads 0

Eight wastewater samples from a university campus were analysed between May and July of 2014 to determine the concentration of 14 natural and synthetic steroid hormones. An on-line solid-phase extraction combined with ultra-high performance liquid chromatography coupled with mass spectrometry (on-line SPE-UHPLC-MS/MS) was used as extraction, pre-concentration and detection method. In the samples studied, three oestrogens (17β-estradiol, estrone and estriol), two androgens (boldenone and testosterone), three progestogens (norgestrel, progesterone and norethisterone) and one glucocorticoid (prednisone) were detected. The removal of hormones was studied in primary and secondary constructed wetland mesocosms. The porous media of the primary constructed wetlands were palm tree mulch. These reactors were used to study the effect of water flow, i.e. horizontal (HF1) vs vertical (VF1). The latter was more efficient in the removal of 17β-estradiol (HF1: 30%, VF1: 50%), estrone (HF1: 63%, VF1: 85%), estriol (100% both), testosterone (HF1: 45%, VF1: 73%), boldenone (HF1:-77%, VF1: 100%) and progesterone (HF1: 84%, VF1: 99%). The effluent of HF1 was used as influent of three secondary constructed wetland mesocosms: two double-stage vertical flow constructed wetlands, one with gravel (VF2gravel) and one with palm mulch (VF2mulch), and a mineral-based, horizontal flow constructed wetland (HFmineral). VF2mulch was the most efficient of the secondary reactors, since it achieved the complete removal of the hormones studied with the exception of 17ß-estradiol. The significantly better removal of BOD and ammonia attained by VF2mulch suggests that the better aeration of mulch favoured the more efficient removal of hormones.

ACS Style

José Alberto Herrera-Melián; Rayco Guedes-Alonso; Alejandro Borreguero-Fabelo; José Juan Santana-Rodríguez; Zoraida Sosa-Ferrera. Study on the removal of hormones from domestic wastewaters with lab-scale constructed wetlands with different substrates and flow directions. Environmental Science and Pollution Research 2017, 25, 20374 -20384.

AMA Style

José Alberto Herrera-Melián, Rayco Guedes-Alonso, Alejandro Borreguero-Fabelo, José Juan Santana-Rodríguez, Zoraida Sosa-Ferrera. Study on the removal of hormones from domestic wastewaters with lab-scale constructed wetlands with different substrates and flow directions. Environmental Science and Pollution Research. 2017; 25 (21):20374-20384.

Chicago/Turabian Style

José Alberto Herrera-Melián; Rayco Guedes-Alonso; Alejandro Borreguero-Fabelo; José Juan Santana-Rodríguez; Zoraida Sosa-Ferrera. 2017. "Study on the removal of hormones from domestic wastewaters with lab-scale constructed wetlands with different substrates and flow directions." Environmental Science and Pollution Research 25, no. 21: 20374-20384.

Article
Published: 12 May 2017 in Chemical Engineering & Technology
Reads 0
Downloads 0

The performance and economic cost of the removal of phenol with TiO2 photocatalysis, photo-Fenton reactions, biological aerated filter (BAF), and constructed wetland (CW) reactors has been studied. The BAF achieved complete removal with a maximum phenol concentration of 200 mg·L−1. The BAF-CW combination provided a phenol-free effluent with a maximum phenol concentration of 650 mg·L−1. In both cases, a complete detoxification of the treated water was achieved at the concentrations studied. The efficiency of TiO2 photocatalysis was limited to concentrations below 50 mg L−1 to minimize removal reduction and toxicity of the intermediates. Photo-Fenton was more efficient, but also more expensive because of the high cost of H2O2. The photo-Fenton-BAF combination is proposed to be the most suitable one.

ACS Style

José Alejandro Ortega-Méndez; José Alberto Herrera-Melián; Javier Araña; María Rocío Espino-Estévez; José Miguel Doña Rodríguez. Performance and Economic Assessment of the Treatment of Phenol with TiO2 Photocatalysis, Photo-Fenton, Biological Aerated Filter, and Wetland Reactors. Chemical Engineering & Technology 2017, 40, 1165 -1175.

AMA Style

José Alejandro Ortega-Méndez, José Alberto Herrera-Melián, Javier Araña, María Rocío Espino-Estévez, José Miguel Doña Rodríguez. Performance and Economic Assessment of the Treatment of Phenol with TiO2 Photocatalysis, Photo-Fenton, Biological Aerated Filter, and Wetland Reactors. Chemical Engineering & Technology. 2017; 40 (6):1165-1175.

Chicago/Turabian Style

José Alejandro Ortega-Méndez; José Alberto Herrera-Melián; Javier Araña; María Rocío Espino-Estévez; José Miguel Doña Rodríguez. 2017. "Performance and Economic Assessment of the Treatment of Phenol with TiO2 Photocatalysis, Photo-Fenton, Biological Aerated Filter, and Wetland Reactors." Chemical Engineering & Technology 40, no. 6: 1165-1175.

Articles
Published: 06 February 2016 in DESALINATION AND WATER TREATMENT
Reads 0
Downloads 0

The treatment of groundwater contaminated with gasoline and diesel with H2O2, H2O2 + UV, Fenton, and photo-Fenton was studied. Fenton reactions provided the best results with 1 mM of Fe2+ and 200 mM of H2O2. High contaminant removals were achieved, in particular those of COD (Fenton: 69%, photo-Fenton: 97%), Diesel Range Organics (99.9% both reactions), Gasoline Range Organics (99.9% both reactions), Total Petroleum Hydrocarbons (Fenton: 83.8%, photo-Fenton: 92.5%), Total Phenols (Fenton: 67.3%, photo-Fenton: 90.4%), and toxicity toward Vibrio fischeri (100%, both reactions). The experiments have been performed with synthetic and real samples. The economic cost of the proposed method (14 USD/m3) is reduced by 60% with respect to that currently used in Ecuador.

ACS Style

Guillermo F. Torres; J.A. Ortega Méndez; Diana L. Tinoco; Enrique D. Marin; J. Araña; J.A. Herrera-Melián; J.M. Doña Rodrígez; J. Pérez Peña; Diana Tinoco. Detoxification of synthetic and real groundwater contaminated with gasoline and diesel using Fenton, photo-Fenton, and biofilters. DESALINATION AND WATER TREATMENT 2016, 57, 23760 -23769.

AMA Style

Guillermo F. Torres, J.A. Ortega Méndez, Diana L. Tinoco, Enrique D. Marin, J. Araña, J.A. Herrera-Melián, J.M. Doña Rodrígez, J. Pérez Peña, Diana Tinoco. Detoxification of synthetic and real groundwater contaminated with gasoline and diesel using Fenton, photo-Fenton, and biofilters. DESALINATION AND WATER TREATMENT. 2016; 57 (50):23760-23769.

Chicago/Turabian Style

Guillermo F. Torres; J.A. Ortega Méndez; Diana L. Tinoco; Enrique D. Marin; J. Araña; J.A. Herrera-Melián; J.M. Doña Rodrígez; J. Pérez Peña; Diana Tinoco. 2016. "Detoxification of synthetic and real groundwater contaminated with gasoline and diesel using Fenton, photo-Fenton, and biofilters." DESALINATION AND WATER TREATMENT 57, no. 50: 23760-23769.

Journal article
Published: 06 February 2016 in Desalination and Water Treatment
Reads 0
Downloads 0
ACS Style

Guillermo F. Torres; J.A. Ortega Méndez; Diana Tinoco; Enrique D. Marin; J. Araña; José Alberto Herrera-Melián; M.R. Espino-Estévez; J.M. Doña Rodrígez; J. Perez Pena. Application of advanced oxidation technologies and sand filter for the detoxification of effluents from small textile industries in Ecuador. Desalination and Water Treatment 2016, 57, 1 -11.

AMA Style

Guillermo F. Torres, J.A. Ortega Méndez, Diana Tinoco, Enrique D. Marin, J. Araña, José Alberto Herrera-Melián, M.R. Espino-Estévez, J.M. Doña Rodrígez, J. Perez Pena. Application of advanced oxidation technologies and sand filter for the detoxification of effluents from small textile industries in Ecuador. Desalination and Water Treatment. 2016; 57 (51):1-11.

Chicago/Turabian Style

Guillermo F. Torres; J.A. Ortega Méndez; Diana Tinoco; Enrique D. Marin; J. Araña; José Alberto Herrera-Melián; M.R. Espino-Estévez; J.M. Doña Rodrígez; J. Perez Pena. 2016. "Application of advanced oxidation technologies and sand filter for the detoxification of effluents from small textile industries in Ecuador." Desalination and Water Treatment 57, no. 51: 1-11.

Journal article
Published: 01 February 2015 in Applied Catalysis B: Environmental
Reads 0
Downloads 0
ACS Style

J.A. Ortega Méndez; J.A. Herrera Melián; J. Araña; J.M. Doña Rodríguez; O. González Díaz; J. Pérez Peña. Detoxification of waters contaminated with phenol, formaldehyde and phenol–formaldehyde mixtures using a combination of biological treatments and advanced oxidation techniques. Applied Catalysis B: Environmental 2015, 163, 63 -73.

AMA Style

J.A. Ortega Méndez, J.A. Herrera Melián, J. Araña, J.M. Doña Rodríguez, O. González Díaz, J. Pérez Peña. Detoxification of waters contaminated with phenol, formaldehyde and phenol–formaldehyde mixtures using a combination of biological treatments and advanced oxidation techniques. Applied Catalysis B: Environmental. 2015; 163 ():63-73.

Chicago/Turabian Style

J.A. Ortega Méndez; J.A. Herrera Melián; J. Araña; J.M. Doña Rodríguez; O. González Díaz; J. Pérez Peña. 2015. "Detoxification of waters contaminated with phenol, formaldehyde and phenol–formaldehyde mixtures using a combination of biological treatments and advanced oxidation techniques." Applied Catalysis B: Environmental 163, no. : 63-73.

Journal article
Published: 15 July 2014 in Journal of Photochemistry and Photobiology A: Chemistry
Reads 0
Downloads 0

An optimization study was carried out from the detoxification of waters contaminated by the herbicide propanil at the maximum concentrations found in different rice-growing cooperatives in Ecuador. Studies included the degradation, mineralization and detoxification of the herbicide through TiO2-photocatalysis using two different catalysts, P25 Evonik and ECT1023t (a catalyst prepared by our research group), and through the Fenton reaction. It was determined that pH (studied between 3 and 7) had a determining effect on mineralization, especially with P25, but not on degradation. Adsorption and FTIR studies revealed a strong interaction of propanil with the catalyst surface, which conditioned the effectiveness of each of the studied catalysts. Propanil degradation with TiO2-photocatalysis occurred in 2 h, but complete detoxification required 12 h. In the case of the Fenton reaction, degradation was immediate but detoxification was not possible due to the inhibition of mineralization. With these results in mind, a study was made of a combination of the Fenton and TiO2-photocatalysis methods using ECT1023t, which resulted in a fourfold increase in the detoxification rate compared to that for heterogeneous photocatalysis. This result may be highly significant for the application of these techniques in processes in which the reaction time is of considerable importance.

ACS Style

O.M. González Sánchez; J. Araña; O. González Díaz; J.A. Herrera Melián; J.M. Doña Rodríguez; J. Pérez Peña. Detoxification of the herbicide propanil by means of Fenton process and TiO2-photocatalysis. Journal of Photochemistry and Photobiology A: Chemistry 2014, 291, 34 -43.

AMA Style

O.M. González Sánchez, J. Araña, O. González Díaz, J.A. Herrera Melián, J.M. Doña Rodríguez, J. Pérez Peña. Detoxification of the herbicide propanil by means of Fenton process and TiO2-photocatalysis. Journal of Photochemistry and Photobiology A: Chemistry. 2014; 291 ():34-43.

Chicago/Turabian Style

O.M. González Sánchez; J. Araña; O. González Díaz; J.A. Herrera Melián; J.M. Doña Rodríguez; J. Pérez Peña. 2014. "Detoxification of the herbicide propanil by means of Fenton process and TiO2-photocatalysis." Journal of Photochemistry and Photobiology A: Chemistry 291, no. : 34-43.

Journal article
Published: 01 June 2014 in Journal of Environmental Management
Reads 0
Downloads 0

The life span of subsurface flow treatment wetlands is determined by the clogging of the substrate. Thus, the influent should undergo primary treatment to reduce loadings of suspended solids and dissolved organic matter. An-organic based substrate should be less prone to clogging because of its remarkably higher porosity and plasticity. Mulch obtained from branches of the Canarian palm tree (Phoenix canariensis) has been tested as substrate for mixed flow, intermittently fed treatment wetland mesocosms processing high strength urban wastewater. The effect of the presence of plants (Phragmites and Cyperus), influent pressure and hydraulic loading rate was studied. The best removals (SS: 89%, COD: 77%, turbidity: 82%) have been obtained with planted reactors treating highly concentrated influents at the lower hydraulic loading rates tested. The palm tree mulch units achieved similar removals of SS, COD and turbidity to one having gravel as substrate and planted with common reed. Mulch obtained from stems of giant reed (Arundo donax) provided similar removals of SS and turbidity but that of COD was lower. The combination of organic-based TWs with gravel-based ones provided high removals (SS: 95%, COD: 78%, turbidity: 95%) while the risk of clogging was strongly reduced.

ACS Style

José Alberto Herrera-Melián; A. González-Bordón; M.A. Martín-González; Pilar Garcia-Jimenez; M. Carrasco; J. Araña. Palm tree mulch as substrate for primary treatment wetlands processing high strength urban wastewater. Journal of Environmental Management 2014, 139, 22 -31.

AMA Style

José Alberto Herrera-Melián, A. González-Bordón, M.A. Martín-González, Pilar Garcia-Jimenez, M. Carrasco, J. Araña. Palm tree mulch as substrate for primary treatment wetlands processing high strength urban wastewater. Journal of Environmental Management. 2014; 139 ():22-31.

Chicago/Turabian Style

José Alberto Herrera-Melián; A. González-Bordón; M.A. Martín-González; Pilar Garcia-Jimenez; M. Carrasco; J. Araña. 2014. "Palm tree mulch as substrate for primary treatment wetlands processing high strength urban wastewater." Journal of Environmental Management 139, no. : 22-31.

Journal article
Published: 01 June 2014 in Chemical Engineering Journal
Reads 0
Downloads 0
ACS Style

M.A. Martín-González; Oscar M. González Díaz; Pedro Susial; J. Araña; José Alberto Herrera-Melián; José Miguel Doña Rodríguez; J. Pérez-Peña. Reuse of Phoenix canariensis palm frond mulch as biosorbent and as precursor of activated carbons for the adsorption of Imazalil in aqueous phase. Chemical Engineering Journal 2014, 245, 348 -358.

AMA Style

M.A. Martín-González, Oscar M. González Díaz, Pedro Susial, J. Araña, José Alberto Herrera-Melián, José Miguel Doña Rodríguez, J. Pérez-Peña. Reuse of Phoenix canariensis palm frond mulch as biosorbent and as precursor of activated carbons for the adsorption of Imazalil in aqueous phase. Chemical Engineering Journal. 2014; 245 ():348-358.

Chicago/Turabian Style

M.A. Martín-González; Oscar M. González Díaz; Pedro Susial; J. Araña; José Alberto Herrera-Melián; José Miguel Doña Rodríguez; J. Pérez-Peña. 2014. "Reuse of Phoenix canariensis palm frond mulch as biosorbent and as precursor of activated carbons for the adsorption of Imazalil in aqueous phase." Chemical Engineering Journal 245, no. : 348-358.

Journal article
Published: 21 January 2014 in International Journal of Environmental Science and Technology
Reads 0
Downloads 0

A laboratory-scale, intermittently fed, organic-based vertical flow filter was tested as a pre-treatment of high-strength urban wastewater to reduce the risk of clogging in treatment wetlands. At an average hydraulic loading rate of 815 L/m2 day and average surface loading rates of biological oxygen demand of 458 g/m2 day, chemical oxygen demand of 594 g/m2 day and suspended solids of 310 g/m2 day, the organic-based vertical flow filter achieved removal efficiencies of 48 % of biological oxygen demand, 45 % of chemical oxygen demand, 69 % of suspended solids and 51 % of turbidity. For this unit, removals were significantly correlated with organic surface loading rates but not with hydraulic loading rate. Additionally, the organic-based vertical flow filter removed almost completely the hormone residues studied: estrone, 17β-estradiol, 17β-ethynyl estradiol, diethylstilbestrol, estriol, norethisterone and testosterone, most probably by the combination of adsorption onto the organic substrate and biodegradation. The efficiency of the combined system was remarkable for biological oxygen demand (97 %), chemical oxygen demand (89 %), suspended solids and turbidity (99 %), fecal coliforms and E. coli (99.9 %) and fecal enterococci (99 %).

ACS Style

José Alberto Herrera-Melián; María Esther Torres-Padrón; Abenchara María Betancor-Abreu; Z. Sosa-Ferrera; J. J. Santana-Rodríguez; M. A. Martín-González; J. Araña; R. Guedes-Alonso; Sosa-Ferrera Zoraida. Clogging reduction and removal of hormone residues with laboratory-scale vertical flow organic-based filter and hybrid wetland. International Journal of Environmental Science and Technology 2014, 12, 1039 -1052.

AMA Style

José Alberto Herrera-Melián, María Esther Torres-Padrón, Abenchara María Betancor-Abreu, Z. Sosa-Ferrera, J. J. Santana-Rodríguez, M. A. Martín-González, J. Araña, R. Guedes-Alonso, Sosa-Ferrera Zoraida. Clogging reduction and removal of hormone residues with laboratory-scale vertical flow organic-based filter and hybrid wetland. International Journal of Environmental Science and Technology. 2014; 12 (3):1039-1052.

Chicago/Turabian Style

José Alberto Herrera-Melián; María Esther Torres-Padrón; Abenchara María Betancor-Abreu; Z. Sosa-Ferrera; J. J. Santana-Rodríguez; M. A. Martín-González; J. Araña; R. Guedes-Alonso; Sosa-Ferrera Zoraida. 2014. "Clogging reduction and removal of hormone residues with laboratory-scale vertical flow organic-based filter and hybrid wetland." International Journal of Environmental Science and Technology 12, no. 3: 1039-1052.

Journals
Published: 12 November 2012 in Photochemical & Photobiological Sciences
Reads 0
Downloads 0

The photocatalytic degradation of the commercial dye Lanaset Sun Yellow 180 was studied in the presence and absence of the different additives used in the dye's formulation. The experiments were performed with Degussa P25 as received and doped with Fe (Fe–TiO2) and a new catalyst synthesized by our research group (ECT-1023). The best efficiency was achieved with Fe–TiO2. With this catalyst, the formation of a photoactive complex was observed between the dye and Fe atoms of the catalyst surface that accelerated degradation. FTIR studies revealed that the complex was formed by interaction between the dye's carbonyl groups and the atoms of the metal. In mixtures of the dye containing citric acid or acetate, degradation was notably inhibited with the catalysts Fe–TiO2 and ECT-1023 because of the formation of carboxylates on their surface. This inhibitory effect was neutralized when all the additives were present in the solution. Toxicity analyses indicated that intermediates were not toxic. Thus, the photocatalytic methods seem to be optimal for the decolourization of wastewaters containing this dye.

ACS Style

J. Araña; D. Zerbani; José Alberto Herrera-Melián; D. Garzón Sousa; Oscar M. González Díaz; José Miguel Doña Rodríguez. Effect of additives in photocatalytic degradation of commercial azodye Lanaset Sun Yellow 180. Photochemical & Photobiological Sciences 2012, 12, 703 -708.

AMA Style

J. Araña, D. Zerbani, José Alberto Herrera-Melián, D. Garzón Sousa, Oscar M. González Díaz, José Miguel Doña Rodríguez. Effect of additives in photocatalytic degradation of commercial azodye Lanaset Sun Yellow 180. Photochemical & Photobiological Sciences. 2012; 12 (4):703-708.

Chicago/Turabian Style

J. Araña; D. Zerbani; José Alberto Herrera-Melián; D. Garzón Sousa; Oscar M. González Díaz; José Miguel Doña Rodríguez. 2012. "Effect of additives in photocatalytic degradation of commercial azodye Lanaset Sun Yellow 180." Photochemical & Photobiological Sciences 12, no. 4: 703-708.

Journal article
Published: 15 September 2012 in Journal of Photochemistry and Photobiology A: Chemistry
Reads 0
Downloads 0

A Ti–H2O2–phenol complex, not described until now, has been identified on the surface of Degussa P-25 and the new catalyst ECT-1023. This complex is considered to be responsible for the higher hydroquinone to catechol concentration ratio. It has been also shown that phenolates identified on the surface modify electrodonation that controls the generation of activating positions of the aromatic ring. The different strengths of the Lewis acid centres identified provide phenolates with different electrodonation ability. It has been observed that P-25 has Lewis acid centres with stronger acid character than those of ECT-1023. Thus, the mechanism of phenol degradation is affected by the formation of complexes with H2O2 and the distribution and strength of Lewis acid centres of the studied catalyst.

ACS Style

J. Araña; D. Portillo-Carrizo; J.A. Ortega Méndez; José Alberto Herrera-Melián; J.M. Doña Rodríguez; J. Pérez-Peña; O. González Díaz. Effect of Lewis acid centres and H2O2-complexes on the photocatalytic degradation of phenol. Journal of Photochemistry and Photobiology A: Chemistry 2012, 249, 61 -69.

AMA Style

J. Araña, D. Portillo-Carrizo, J.A. Ortega Méndez, José Alberto Herrera-Melián, J.M. Doña Rodríguez, J. Pérez-Peña, O. González Díaz. Effect of Lewis acid centres and H2O2-complexes on the photocatalytic degradation of phenol. Journal of Photochemistry and Photobiology A: Chemistry. 2012; 249 ():61-69.

Chicago/Turabian Style

J. Araña; D. Portillo-Carrizo; J.A. Ortega Méndez; José Alberto Herrera-Melián; J.M. Doña Rodríguez; J. Pérez-Peña; O. González Díaz. 2012. "Effect of Lewis acid centres and H2O2-complexes on the photocatalytic degradation of phenol." Journal of Photochemistry and Photobiology A: Chemistry 249, no. : 61-69.

Journal article
Published: 01 August 2012 in Journal of Environmental Management
Reads 0
Downloads 0

The degradation and detoxification towards the duckweed Lemna minor of 4-nitrophenol (4NP) was studied by means of bench-scale constructed wetlands (CWs), TiO(2)-photocatalysis and Fenton + photoFenton reactions. The main goal of this work was to compare the three treatment techniques to evaluate their possible combination for the efficient, low cost treatment of 4NP effluents. In CWs, adsorption on the substrate of 4NP was found to achieve 34-45%. Low concentrations (up to 100 ppm) of 4NP were successfully treated by CWs in 8-12 h. The microbial degradation of 4NP started after a lag phase which was longer with higher initial concentrations of the pollutant. The greatest degradation rate was found to occur at initial concentrations of 4NP between 60 and 90 ppm. Solar TiO(2)-photocatalysis was faster than the CWs. The greatest removals in terms of mass of 4NP removed after 6 h of irradiation were found to occur at 4NP concentrations of about 200 ppm. Fenton reaction provided complete 4NP degradation up to 500 ppm in only 30 min but TOC was removed by only about 40%. The resulting toxicities were below 20% for initial 4NP concentrations below 300 ppm. It was the Fenton + photoFenton combination (180 min in total) that provided TOC reductions up to 80% and negative L. minor growth inhibition for almost all the 4NP concentrations tested. The combination of solar TiO(2)-photocatalysis (6 h) with CWs (16 h) was able to completely treat and detoxify 4NP effluents with concentrations as high as 200 ppm of the organic.

ACS Style

José Alberto Herrera-Melián; Alberto J. Martín-Rodríguez; A. Ortega-Méndez; J. Araña; José Miguel Doña Rodríguez; J. Pérez-Peña. Degradation and detoxification of 4-nitrophenol by advanced oxidation technologies and bench-scale constructed wetlands. Journal of Environmental Management 2012, 105, 53 -60.

AMA Style

José Alberto Herrera-Melián, Alberto J. Martín-Rodríguez, A. Ortega-Méndez, J. Araña, José Miguel Doña Rodríguez, J. Pérez-Peña. Degradation and detoxification of 4-nitrophenol by advanced oxidation technologies and bench-scale constructed wetlands. Journal of Environmental Management. 2012; 105 ():53-60.

Chicago/Turabian Style

José Alberto Herrera-Melián; Alberto J. Martín-Rodríguez; A. Ortega-Méndez; J. Araña; José Miguel Doña Rodríguez; J. Pérez-Peña. 2012. "Degradation and detoxification of 4-nitrophenol by advanced oxidation technologies and bench-scale constructed wetlands." Journal of Environmental Management 105, no. : 53-60.

Journal article
Published: 23 November 2011 in Applied Catalysis B: Environmental
Reads 0
Downloads 0

The degradation by Fenton and photo-Fenton of high concentrations of ethylene glycol (1000–25,000 mg/L), similar to those found in wastewater has been studied. Strongly exothermic reactions led to temperature increments up to 70–94 °C. In most experiments, temperature increments favored radical formation that provided almost complete mineralization. Oxalic, formic and acetic acids were identified as degradation intermediates. The obtained results indicate that the radicals formed in the degradation of formic and acetic acids with H2O2 were responsible for the exothermic reactions. Nonetheless, Fe–oxalic complexes inhibited the previous reactions by slowing down the process in such a way that complete mineralization did not occur until those complexes were degraded. FTIR studies allowed the identification of some of the complexes and species formed in the process.

ACS Style

J. Araña; J.A. Ortega Méndez; José Alberto Herrera-Melián; J.M. Doña Rodríguez; O. González Díaz; J. Perez Pena. Thermal effect of carboxylic acids in the degradation by photo-Fenton of high concentrations of ethylene glycol. Applied Catalysis B: Environmental 2011, 113-114, 107 -115.

AMA Style

J. Araña, J.A. Ortega Méndez, José Alberto Herrera-Melián, J.M. Doña Rodríguez, O. González Díaz, J. Perez Pena. Thermal effect of carboxylic acids in the degradation by photo-Fenton of high concentrations of ethylene glycol. Applied Catalysis B: Environmental. 2011; 113-114 ():107-115.

Chicago/Turabian Style

J. Araña; J.A. Ortega Méndez; José Alberto Herrera-Melián; J.M. Doña Rodríguez; O. González Díaz; J. Perez Pena. 2011. "Thermal effect of carboxylic acids in the degradation by photo-Fenton of high concentrations of ethylene glycol." Applied Catalysis B: Environmental 113-114, no. : 107-115.

Journal article
Published: 31 July 2010 in Ecological Engineering
Reads 0
Downloads 0

The performance of two substrates commonly available in the zone, gravel and lapilli, was tested for their use in hybrid constructed wetland pilot plants for the treatment and reuse of urban wastewater in Gran Canaria, Canary Islands, Spain. The first stage of the systems was a vertical subsurface-flow constructed wetland and the second stage was a horizontal subsurface-flow constructed wetland. Parallel experiments were carried out with one system containing only crushed stone basaltic gravel as substrate and the other with only lapilli, a very porous volcanic sediment. The comparative effect of substrate type, hydraulic loading rate and planting was studied. Tracer studies indicated that the experimental TRHs were significantly lower than the theoretical ones, particularly for the vertical flow with gravel. Though the vertical flow with lapilli performed better than the one with gravel, the hybrids showed quite similar removals. Planting or varying the hydraulic loading rate introduced little differences between the vertical flows or the hybrids. Average removals for the gravel-based hybrid constructed wetland were 86% for BOD, 80% for COD, 88% for ammonia-N, 96% for SS and turbidity, 24% for phosphate-P, and 99.5% for faecal coliforms and 99.7% for faecal enterococci. Thus, it can be concluded that hybrid constructed wetlands proved to be robust configurations for wastewater treatment in the Canary Islands.

ACS Style

José Alberto Herrera-Melián; Alberto J. Martín-Rodríguez; J. Araña; O. González Díaz; J.J. González Henríquez. Hybrid constructed wetlands for wastewater treatment and reuse in the Canary Islands. Ecological Engineering 2010, 36, 891 -899.

AMA Style

José Alberto Herrera-Melián, Alberto J. Martín-Rodríguez, J. Araña, O. González Díaz, J.J. González Henríquez. Hybrid constructed wetlands for wastewater treatment and reuse in the Canary Islands. Ecological Engineering. 2010; 36 (7):891-899.

Chicago/Turabian Style

José Alberto Herrera-Melián; Alberto J. Martín-Rodríguez; J. Araña; O. González Díaz; J.J. González Henríquez. 2010. "Hybrid constructed wetlands for wastewater treatment and reuse in the Canary Islands." Ecological Engineering 36, no. 7: 891-899.