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Liliana Alzate-Gaviria
Renewable Energy Unit, Yucatan Center for Scientific Research (CICY), Carretera Sierra Papacal-Chuburna Puerto, Km 5, Sierra Papacal, Merida, Yucatan CP 97302, Mexico

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Journal article
Published: 20 August 2021 in Food and Environmental Virology
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The presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in wastewater has been reported as a result of fecal shedding of infected individuals. In this study, the occurrence of SARS-CoV-2 RNA was explored in primary-treated wastewater from two municipal wastewater treatment plants in Quintana Roo, Mexico, along with groundwater from sinkholes, a household well, and submarine groundwater discharges. Physicochemical variables were obtained in situ, and coliphage densities were determined. Three virus concentration methods based on adsorption-elution and sequential filtration were used followed by RNA isolation. Quantification of SARS-CoV-2 was done by RT-qPCR using the CDC 2020 assay, 2019-nCoV_N1 and 2019-nCoV_N2. The Pepper mild mottle virus, one of the most abundant RNA viruses in wastewater was quantified by RT-qPCR and compared to SARS-CoV-2 concentrations. The use of three combined virus concentration methods together with two qPCR assays allowed the detection of SARS-CoV-2 RNA in 58% of the wastewater samples analyzed, whereas none of the groundwater samples were positive for SARS-CoV-2 RNA. Concentrations of SARS-CoV-2 in wastewater were from 1.8 × 103 to 7.5 × 103 genome copies per liter (GC l−1), using the N1 RT-qPCR assay, and from 2.4 × 102 to 5.9 × 103 GC l−1 using the N2 RT-qPCR assay. Based on PMMoV prevalence detected in all wastewater and groundwater samples tested, the three viral concentration methods used could be successfully applied for SARS-CoV-2 RNA detection in further studies. This study represents the first detection of SARS-CoV-2 RNA in wastewater in southeast Mexico and provides a baseline for developing a wastewater-based epidemiology approach in the area.

ACS Style

Gabriela Rosiles-González; Victor Hugo Carrillo-Jovel; Liliana Alzate-Gaviria; Walter Q. Betancourt; Charles P. Gerba; Oscar A. Moreno-Valenzuela; Raúl Tapia-Tussell; Cecilia Hernández-Zepeda. Environmental Surveillance of SARS-CoV-2 RNA in Wastewater and Groundwater in Quintana Roo, Mexico. Food and Environmental Virology 2021, 1 -13.

AMA Style

Gabriela Rosiles-González, Victor Hugo Carrillo-Jovel, Liliana Alzate-Gaviria, Walter Q. Betancourt, Charles P. Gerba, Oscar A. Moreno-Valenzuela, Raúl Tapia-Tussell, Cecilia Hernández-Zepeda. Environmental Surveillance of SARS-CoV-2 RNA in Wastewater and Groundwater in Quintana Roo, Mexico. Food and Environmental Virology. 2021; ():1-13.

Chicago/Turabian Style

Gabriela Rosiles-González; Victor Hugo Carrillo-Jovel; Liliana Alzate-Gaviria; Walter Q. Betancourt; Charles P. Gerba; Oscar A. Moreno-Valenzuela; Raúl Tapia-Tussell; Cecilia Hernández-Zepeda. 2021. "Environmental Surveillance of SARS-CoV-2 RNA in Wastewater and Groundwater in Quintana Roo, Mexico." Food and Environmental Virology , no. : 1-13.

Communication
Published: 23 December 2020 in Journal of Marine Science and Engineering
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In recent years, the massive influx of pelagic Sargassum spp. has generated great interest in the scientific community, highlighting the urgency of addressing the physiology and biochemical composition of these species. Until now, the presence of lignified cells in the tissue of Sargassum natans and Sargassum fluitans has not been reported. Although ‘‘lignin-like’’ compounds have been identified in green algae, the presence of true lignin in the Sargassum genus has not been confirmed. Our work is the first report of lignified cells forming the secondary cell wall in these Sargassum. This study used histological techniques applied to thick sections for identifying lignin-like tissues in Sargassum spp. The dyes as Safranin O and Toluidine have been used to differentiate lignin and cellulose in conducting tissue and to indicate the presence, absence, and distribution of these compounds in tissues. This work is the initial study of the cell wall heteropolymers structure and arrangement in Sargassum spp., providing insights into the unique cell wall architecture of these seaweeds.

ACS Style

Liliana Alzate-Gaviria; Jorge Domínguez-Maldonado; Rubí Chablé-Villacís; Edgar Olguin-Maciel; Rosa María Leal-Bautista; Gonzalo Canché-Escamilla; Adán Caballero-Vázquez; Cecilia Hernández-Zepeda; Felipe Alonso Barredo-Pool; Raúl Tapia-Tussell. Presence of Polyphenols Complex Aromatic “Lignin” in Sargassum spp. from Mexican Caribbean. Journal of Marine Science and Engineering 2020, 9, 6 .

AMA Style

Liliana Alzate-Gaviria, Jorge Domínguez-Maldonado, Rubí Chablé-Villacís, Edgar Olguin-Maciel, Rosa María Leal-Bautista, Gonzalo Canché-Escamilla, Adán Caballero-Vázquez, Cecilia Hernández-Zepeda, Felipe Alonso Barredo-Pool, Raúl Tapia-Tussell. Presence of Polyphenols Complex Aromatic “Lignin” in Sargassum spp. from Mexican Caribbean. Journal of Marine Science and Engineering. 2020; 9 (1):6.

Chicago/Turabian Style

Liliana Alzate-Gaviria; Jorge Domínguez-Maldonado; Rubí Chablé-Villacís; Edgar Olguin-Maciel; Rosa María Leal-Bautista; Gonzalo Canché-Escamilla; Adán Caballero-Vázquez; Cecilia Hernández-Zepeda; Felipe Alonso Barredo-Pool; Raúl Tapia-Tussell. 2020. "Presence of Polyphenols Complex Aromatic “Lignin” in Sargassum spp. from Mexican Caribbean." Journal of Marine Science and Engineering 9, no. 1: 6.

Journal article
Published: 08 December 2020 in Processes
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Corn is one of the main food products in Mexico. The elaboration of corn-derived products generates wastewater with a high organic load (nejayote). Anaerobic digestion is an indicated treatment for wastewater with high organic loads. The results of this study show that the application of microaeration in the hydrolysis-fermentative reactor increased the percentage of volatile fatty acids (VFA) available in the medium by 62%. The addition of a conductive material, such as granulated activated carbon (GAC), promotes DIET (Direct interspecies electrons transfer) in the methanogenic UASB reactor increasing the methane yield by 55%. Likewise, a great diversity of exoelectrogenic bacteria, with the ability to donate electrons DIET mechanisms, were developed in the GAC biofilm, though interestingly, Peptoclostridium and Clostridium (17.3% and 12.75%, respectively) were detected with a great abundance in the GAC biofilm. Peptoclostridium has not been previously reported as a participant in DIET process.

ACS Style

David Valero; Carlos Rico; Raul Tapia-Tussell; Liliana Alzate-Gaviria. Rapid Two Stage Anaerobic Digestion of Nejayote through Microaeration and Direct Interspecies Electron Transfer. Processes 2020, 8, 1614 .

AMA Style

David Valero, Carlos Rico, Raul Tapia-Tussell, Liliana Alzate-Gaviria. Rapid Two Stage Anaerobic Digestion of Nejayote through Microaeration and Direct Interspecies Electron Transfer. Processes. 2020; 8 (12):1614.

Chicago/Turabian Style

David Valero; Carlos Rico; Raul Tapia-Tussell; Liliana Alzate-Gaviria. 2020. "Rapid Two Stage Anaerobic Digestion of Nejayote through Microaeration and Direct Interspecies Electron Transfer." Processes 8, no. 12: 1614.

Original paper
Published: 09 November 2020 in Waste and Biomass Valorization
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In this study, it was proposed to design, build, analyze and evaluate a stack of 9 Sediment Microbial Fuel Cells (SMFC) with a depth in the sediment of 10 cm and separation between anode and cathode of 100 cm, using floating cathodes aerated with saturated oxygen, sediments and seawater were collected from the Campeche bay (Mexico). Maximum power density and current density were 101.28 mW/m2 and 899.51 mA/m2 respectively, and organic matter removal was 9.25%, obtaining aromatic structures. Using a circuit storage energy from ultra-low power. Our findings revealed that the implementations of SMFC stack proposal could be a candidate for real scale.

ACS Style

Nancy González-Gamboa; Raúl Tapia-Tussell; Sathish Kumar Kamaraj; David Valdés-Lozano; Jorge Domínguez-Maldonado; Liliana Alzate-Gaviria. Scale Up of a Marine Sediment Microbial Fuel Cells Stack with a Floating Aerated Cathode Using a Circuit Storage Energy from Ultra-Low Power. Waste and Biomass Valorization 2020, 12, 3977 -3985.

AMA Style

Nancy González-Gamboa, Raúl Tapia-Tussell, Sathish Kumar Kamaraj, David Valdés-Lozano, Jorge Domínguez-Maldonado, Liliana Alzate-Gaviria. Scale Up of a Marine Sediment Microbial Fuel Cells Stack with a Floating Aerated Cathode Using a Circuit Storage Energy from Ultra-Low Power. Waste and Biomass Valorization. 2020; 12 (7):3977-3985.

Chicago/Turabian Style

Nancy González-Gamboa; Raúl Tapia-Tussell; Sathish Kumar Kamaraj; David Valdés-Lozano; Jorge Domínguez-Maldonado; Liliana Alzate-Gaviria. 2020. "Scale Up of a Marine Sediment Microbial Fuel Cells Stack with a Floating Aerated Cathode Using a Circuit Storage Energy from Ultra-Low Power." Waste and Biomass Valorization 12, no. 7: 3977-3985.

Article
Published: 06 October 2020 in Current Microbiology
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The decolorization of dye and textile effluent by Trametes hirsuta was studied in both induced and non-induced media. A removal of 70–100% of the color was achieved through adsorption and the action of laccases. Laccase activity was increased significantly with the addition of grapefruit peel (4000 U/mL) and effluent with grapefruit peel (16,000 U/mL) in comparison with the basal medium (50 U/mL). Analysis of the expression of laccase isoenzymes lac-B and lac-T revealed clear differences in the expression of these genes. The low levels of expression of lac-B in all media suggest a basal or constitutive gene expression, whereas lac-T was over-expressed in the media with effluent, and showed an up/down regulation depending on culture conditions and time. The results obtained suggest that the lac-T gene of T. hirsuta is involved in the decolorization of dyes.

ACS Style

Raul Tapia-Tussell; Alejandrina Pereira‑Patrón; Liliana Alzate-Gaviria; Gabriel Lizama-Uc; Daisy Pérez-Brito; Sara Solis‑Pereira. Decolorization of Textile Effluent by Trametes hirsuta Bm-2 and lac-T as Possible Main Laccase-Contributing Gene. Current Microbiology 2020, 77, 3953 -3961.

AMA Style

Raul Tapia-Tussell, Alejandrina Pereira‑Patrón, Liliana Alzate-Gaviria, Gabriel Lizama-Uc, Daisy Pérez-Brito, Sara Solis‑Pereira. Decolorization of Textile Effluent by Trametes hirsuta Bm-2 and lac-T as Possible Main Laccase-Contributing Gene. Current Microbiology. 2020; 77 (12):3953-3961.

Chicago/Turabian Style

Raul Tapia-Tussell; Alejandrina Pereira‑Patrón; Liliana Alzate-Gaviria; Gabriel Lizama-Uc; Daisy Pérez-Brito; Sara Solis‑Pereira. 2020. "Decolorization of Textile Effluent by Trametes hirsuta Bm-2 and lac-T as Possible Main Laccase-Contributing Gene." Current Microbiology 77, no. 12: 3953-3961.

Journal article
Published: 19 February 2020 in Energies
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In an anaerobic digestion (AD) process, the hydrolysis phase is often limited when substrates with high concentrations of solids are used. We hypothesized that applying micro-aeration in the hydrolysis phase and the application of granular activated carbon (GAC) in the methanogenesis phase could make the AD process more efficient. A packed bed reactor (PBR) coupled with an up-flow anaerobic sludge blanket (UASB) was conducted, and its effects on methane generation were evaluated. The micro-aeration rate applied in PBR was 254 L-air/kg-Total solids (TS)-d was compared with a control reactor. Micro-aeration showed that it reduced the hydrolysis time and increased the organic matter solubilization as chemical oxygen demand (COD) increasing 200%, with a volatile fatty acids (VFAs) increment higher than 300%, compared to the control reactor (without aeration). Our findings revealed that the implementations of microaeration and GAC in the two-phase AD system could enhance methane production by reducing hydrolysis time, increasing solid waste solubilization.

ACS Style

Fernando Canul Bacab; Elda España Gamboa; Juan Enrique Ruiz Espinoza; Rosa M Leal-Bautista; Raúl Tapia Tussell; Jorge Domínguez Maldonado; Blondy Canto Canché; Liliana Alzate-Gaviria. Two Phase Anaerobic Digestion System of Municipal Solid Waste by Utilizing Microaeration and Granular Activated Carbon. Energies 2020, 13, 933 .

AMA Style

Fernando Canul Bacab, Elda España Gamboa, Juan Enrique Ruiz Espinoza, Rosa M Leal-Bautista, Raúl Tapia Tussell, Jorge Domínguez Maldonado, Blondy Canto Canché, Liliana Alzate-Gaviria. Two Phase Anaerobic Digestion System of Municipal Solid Waste by Utilizing Microaeration and Granular Activated Carbon. Energies. 2020; 13 (4):933.

Chicago/Turabian Style

Fernando Canul Bacab; Elda España Gamboa; Juan Enrique Ruiz Espinoza; Rosa M Leal-Bautista; Raúl Tapia Tussell; Jorge Domínguez Maldonado; Blondy Canto Canché; Liliana Alzate-Gaviria. 2020. "Two Phase Anaerobic Digestion System of Municipal Solid Waste by Utilizing Microaeration and Granular Activated Carbon." Energies 13, no. 4: 933.

Journal article
Published: 23 October 2019 in Microorganisms
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Consolidated bioprocessing (CBP), which integrates biological pretreatment, enzyme production, saccharification, and fermentation, is a promising operational strategy for cost-effective ethanol production from biomass. In this study, the use of a native strain of Trametes hirsuta (Bm-2) was evaluated for bioethanol production from Brosimum alicastrum in a CBP. The raw seed flour obtained from the ramon tree contained 61% of starch, indicating its potential as a raw material for bioethanol production. Quantitative assays revealed that the Bm-2 strain produced the amylase enzyme with activity of 193.85 U/mL. The Bm-2 strain showed high tolerance to ethanol stress and was capable of directly producing ethanol from raw flour at a concentration of 13 g/L, with a production yield of 123.4 mL/kg flour. This study demonstrates the potential of T. hirsuta Bm-2 for starch-based ethanol production in a consolidated bioprocess to be implemented in the biofuel industry. The residual biomass after fermentation showed an average protein content of 22.5%, suggesting that it could also be considered as a valuable biorefinery co-product for animal feeding.

ACS Style

Edgar Olguin-Maciel; Alfonso Larqué-Saavedra; Patricia E. Lappe-Oliveras; Luis F. Barahona-Pérez; Liliana Alzate-Gaviria; Rubí Chablé-Villacis; Jorge Domínguez-Maldonado; Daniella Pacheco-Catalán; Hector A. Ruíz; Raúl Tapia-Tussell. Consolidated Bioprocess for Bioethanol Production from Raw Flour of Brosimum alicastrum Seeds Using the Native Strain of Trametes hirsuta Bm-2. Microorganisms 2019, 7, 483 .

AMA Style

Edgar Olguin-Maciel, Alfonso Larqué-Saavedra, Patricia E. Lappe-Oliveras, Luis F. Barahona-Pérez, Liliana Alzate-Gaviria, Rubí Chablé-Villacis, Jorge Domínguez-Maldonado, Daniella Pacheco-Catalán, Hector A. Ruíz, Raúl Tapia-Tussell. Consolidated Bioprocess for Bioethanol Production from Raw Flour of Brosimum alicastrum Seeds Using the Native Strain of Trametes hirsuta Bm-2. Microorganisms. 2019; 7 (11):483.

Chicago/Turabian Style

Edgar Olguin-Maciel; Alfonso Larqué-Saavedra; Patricia E. Lappe-Oliveras; Luis F. Barahona-Pérez; Liliana Alzate-Gaviria; Rubí Chablé-Villacis; Jorge Domínguez-Maldonado; Daniella Pacheco-Catalán; Hector A. Ruíz; Raúl Tapia-Tussell. 2019. "Consolidated Bioprocess for Bioethanol Production from Raw Flour of Brosimum alicastrum Seeds Using the Native Strain of Trametes hirsuta Bm-2." Microorganisms 7, no. 11: 483.

Original paper
Published: 05 October 2019 in Waste and Biomass Valorization
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The impact of a conductive material as powdered activated carbon (PAC) on the biochemical methane potential of whisky pot ale (PA) and brewery spent yeast (SY) was investigated. The test was carried out with three different types of anaerobic inocula: manure inoculum (MI), sewage sludge (SS) and granular sludge (GR). Brewery spent yeast produced partial (in sewage and granular sludge) and total (in manure inoculum) methanogenesis inhibition due to the toxicity of some of its constituents (hops extract). The inhibition was overcome by the supplementation of PAC, that improved significantly the anaerobic digestion process for SY, allowing to reach biochemical methane potential values between 657–699 L CH4 kg−1 VS and it reduced redox potential from − 368 to − 398 mV. The activated carbon did not improve the methane yields from whisky PA since microorganisms did not have difficulties to process this substrate; in fact, the redox potential slightly increased from − 355 to − 330 mV.

ACS Style

David Valero; Liliana Alzate-Gaviria; Jesus Montes; Carlos Rico. Influence of a Conductive Material and Different Anaerobic Inocula on Biochemical Methane Potential of Substrates from Alcoholic Beverage Production. Waste and Biomass Valorization 2019, 11, 5957 -5964.

AMA Style

David Valero, Liliana Alzate-Gaviria, Jesus Montes, Carlos Rico. Influence of a Conductive Material and Different Anaerobic Inocula on Biochemical Methane Potential of Substrates from Alcoholic Beverage Production. Waste and Biomass Valorization. 2019; 11 (11):5957-5964.

Chicago/Turabian Style

David Valero; Liliana Alzate-Gaviria; Jesus Montes; Carlos Rico. 2019. "Influence of a Conductive Material and Different Anaerobic Inocula on Biochemical Methane Potential of Substrates from Alcoholic Beverage Production." Waste and Biomass Valorization 11, no. 11: 5957-5964.

Journal article
Published: 10 May 2019 in Science of The Total Environment
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In recent years, halotolerant biofilms have become a subject of interest for its application in Bioelectrochemical systems for wastewater treatment. To determine if the polarization potential affects the microbial community of a halotolerant bioanode, four bioanodes were poised at potentials of +0.34 V/SHE and − 0.16 V/SHE and the 16S rRNA gene was analyzed through a MiSeq (Ilumina) system. Oceanospirillum, Halomonas and Marinobacterium were the most predominant genus; no previous studies have reported the presence of Oceanospirillum in anodic biofilms. The fitness with the dataset for +0.34 V/SHE with a modified Butler Volmer Monod model, gives a value of K1 was 0.0002 (2.64 A m−2 and 38% coulombic efficiency), indicating the fastest electrochemical reaction. Whereas that −0.16 V/SHE case, the high value of K1 (12.2 with 1.82 A m−2 and 10% coulombic efficiency) indicated that the electron transfer was far from being reversible (Nernstian).

ACS Style

Raul Tapia-Tussell; Raul E. Valle-Gough; Isaías Peraza-Baeza; Jorge Domínguez-Maldonado; Muriel Gonzalez-Muñoz; Alberto Cortes-Velazquez; Rosa M. Leal-Baustista; Liliana Alzate-Gaviria. Influence of two polarization potentials on a bioanode microbial community isolated from a hypersaline coastal lagoon of the Yucatan peninsula, in México. Science of The Total Environment 2019, 681, 258 -266.

AMA Style

Raul Tapia-Tussell, Raul E. Valle-Gough, Isaías Peraza-Baeza, Jorge Domínguez-Maldonado, Muriel Gonzalez-Muñoz, Alberto Cortes-Velazquez, Rosa M. Leal-Baustista, Liliana Alzate-Gaviria. Influence of two polarization potentials on a bioanode microbial community isolated from a hypersaline coastal lagoon of the Yucatan peninsula, in México. Science of The Total Environment. 2019; 681 ():258-266.

Chicago/Turabian Style

Raul Tapia-Tussell; Raul E. Valle-Gough; Isaías Peraza-Baeza; Jorge Domínguez-Maldonado; Muriel Gonzalez-Muñoz; Alberto Cortes-Velazquez; Rosa M. Leal-Baustista; Liliana Alzate-Gaviria. 2019. "Influence of two polarization potentials on a bioanode microbial community isolated from a hypersaline coastal lagoon of the Yucatan peninsula, in México." Science of The Total Environment 681, no. : 258-266.

Journal article
Published: 28 January 2019 in Water
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The most important operational expense during wastewater treatment is electricity for pumping and aeration. Therefore, this work evaluated operational parameters and contaminant removal efficiency of a microbial fuel cell stack system (MFCSS) that uses no electricity. This system consists of (i) septic tank primary treatment, (ii) chamber for secondary treatment containing 18 MFCs, coupled to an energy-harvesting circuit (EHC) that stores the electrons produced by anaerobic respiration, and (iii) gravity-driven disinfection (sodium hypochlorite 5%). The MFCSS operated during 60 days (after stabilization period) and it was gravity-fed with real domestic wastewater from a house (5 inhabitants). The flow rate was 600 ± 100 L∙d−1. The chemical oxygen demand, biological oxygen demand, total nitrogen and total phosphorous were measured in effluent, with values of 100 ± 10; 12 ± 2; 9.6 ± 0.5 and 4 ± 0.2 mg∙L−1, and removal values of 86%, 87%, 84% and 64%, respectively. Likewise, an EHC (ultra-low energy consumption) was built with 6.3 V UCC® 4700 µF capacitors that harvested and stored energy from MFCs in parallel. Energy management was programmed on a microcontroller Atmega 328PB®. The water quality of the treated effluent complied with the maximum levels set by the Mexican Official Standard NOM-001-SEMARNAT-1996-C. A cost analysis showed that MFCSS could be competitive as a sustainable and energy-efficient technology for real domestic wastewater treatment.

ACS Style

Rodrigo Valladares Linares; Jorge Domínguez-Maldonado; Ernesto Rodríguez-Leal; Gabriel Patrón; Alfonso Castillo-Hernández; Alfredo Miranda; Diana Diaz Romero; Rodrigo Moreno-Cervera; Gerardo Camara-Chale; Carlos G. Borroto; Liliana Alzate-Gaviria. Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation. Water 2019, 11, 217 .

AMA Style

Rodrigo Valladares Linares, Jorge Domínguez-Maldonado, Ernesto Rodríguez-Leal, Gabriel Patrón, Alfonso Castillo-Hernández, Alfredo Miranda, Diana Diaz Romero, Rodrigo Moreno-Cervera, Gerardo Camara-Chale, Carlos G. Borroto, Liliana Alzate-Gaviria. Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation. Water. 2019; 11 (2):217.

Chicago/Turabian Style

Rodrigo Valladares Linares; Jorge Domínguez-Maldonado; Ernesto Rodríguez-Leal; Gabriel Patrón; Alfonso Castillo-Hernández; Alfredo Miranda; Diana Diaz Romero; Rodrigo Moreno-Cervera; Gerardo Camara-Chale; Carlos G. Borroto; Liliana Alzate-Gaviria. 2019. "Scale up of Microbial Fuel Cell Stack System for Residential Wastewater Treatment in Continuous Mode Operation." Water 11, no. 2: 217.

Research article
Published: 09 January 2019 in Journal of Chemical Technology & Biotechnology
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BACKGROUND Greywater and blackwater treatment is necessary to make sanitation and reuse possible, and microbial fuel cells have emerged as a promising technology for achieving this objective. Ion exchange membranes play a key role in double chamber microbial fuel cell performance, but there are differences of opinion as to which membrane type is better. RESULTS This project was set up to study the effect of three ion exchange membranes (Nafion® 117, UltrexTM CMI‐7000 and UltrexTM AMI‐7001) in MFC's while using greywater as catholyte in stacks of three microbial fuel cells each. The results prove that the stacks with cationic membranes (Nafion® 117 and UltrexTM CMI‐7000), generated higher power (201.50±21.62 and 178.74±56.89 mW m‐3, respectively) than those with the anionic membrane stack UltrexTM AMI‐7001 (71.57±3.46 mW m‐3). For the greywater catholyte a 31% of chemical oxygen demand removal was achieved and proved to be an option as a catholyte in microbial fuel cells for countries that carry out wastewater separation. CONCLUSIONS The results obtained in this study demonstrated that an anion exchange membrane is not a better option for double chamber microbial fuel cells. This article is protected by copyright. All rights reserved.

ACS Style

Rodrigo Moreno-Cervera; Manuel Aguilar-Vega; Jorge Domínguez-Maldonado; Gerardo Cámara-Chale; Liliana Alzate-Gaviria. Performance of a greywater cathode in a microbial fuel cell with three ion exchange membranes. Journal of Chemical Technology & Biotechnology 2019, 94, 1601 -1612.

AMA Style

Rodrigo Moreno-Cervera, Manuel Aguilar-Vega, Jorge Domínguez-Maldonado, Gerardo Cámara-Chale, Liliana Alzate-Gaviria. Performance of a greywater cathode in a microbial fuel cell with three ion exchange membranes. Journal of Chemical Technology & Biotechnology. 2019; 94 (5):1601-1612.

Chicago/Turabian Style

Rodrigo Moreno-Cervera; Manuel Aguilar-Vega; Jorge Domínguez-Maldonado; Gerardo Cámara-Chale; Liliana Alzate-Gaviria. 2019. "Performance of a greywater cathode in a microbial fuel cell with three ion exchange membranes." Journal of Chemical Technology & Biotechnology 94, no. 5: 1601-1612.

Journal article
Published: 13 July 2018 in Sustainability
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Benthic microbial fuel cells (BMFC) are devices that remove organic matter (OM) and generate energy from sediments rich in organic nutrients. They are composed of electrodes with adequate different distances and floating air cathodes in an aqueous medium with saturated oxygen. In this study we proposed to design, build, analyze and evaluate a set of BMFCs with floating air cathodes to test the optimal distance between the electrodes, using sediment from the Bay of Campeche as a substrate. For the analysis of OM removal, COD tests, volatile solids (VS), E4/E6 study and FTIR analysis were performed. Power generation was evaluated through polarization curves, cyclic voltammetry and electrochemical impedance spectroscopy (EIS). We achieved a current density and power density at 10 cm depth of 929.7 ± 9.5 mA/m2 and 109.6 ± 7.5 mW/m2 respectively, with 54% removal of OM from the sediment, obtaining formation of aliphatic structures. BMFCs are proposed as adequate systems for bioremediation and power generation. The system at 10 cm depth and 100 cm distance between sediment and the floating air cathode had a good performance and therefore the potential for possible scaling.

ACS Style

Nancy González-Gamboa; Xochitl Domínguez-Benetton; Daniella Pacheco-Catalán; Sathish Kumar-Kamaraj; David Valdés-Lozano; Jorge Domínguez-Maldonado; Liliana Alzate-Gaviria. Effect of Operating Parameters on the Performance Evaluation of Benthic Microbial Fuel Cells Using Sediments from the Bay of Campeche, Mexico. Sustainability 2018, 10, 2446 .

AMA Style

Nancy González-Gamboa, Xochitl Domínguez-Benetton, Daniella Pacheco-Catalán, Sathish Kumar-Kamaraj, David Valdés-Lozano, Jorge Domínguez-Maldonado, Liliana Alzate-Gaviria. Effect of Operating Parameters on the Performance Evaluation of Benthic Microbial Fuel Cells Using Sediments from the Bay of Campeche, Mexico. Sustainability. 2018; 10 (7):2446.

Chicago/Turabian Style

Nancy González-Gamboa; Xochitl Domínguez-Benetton; Daniella Pacheco-Catalán; Sathish Kumar-Kamaraj; David Valdés-Lozano; Jorge Domínguez-Maldonado; Liliana Alzate-Gaviria. 2018. "Effect of Operating Parameters on the Performance Evaluation of Benthic Microbial Fuel Cells Using Sediments from the Bay of Campeche, Mexico." Sustainability 10, no. 7: 2446.

Communication
Published: 01 March 2018 in Energies
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Halotolerant bioanodes are considered an attractive alternative in microbial electrochemical systems, as they can operate under higher conductive electrolytes, in comparison with traditional wastewater and freshwater bioanodes. The dependency between energetic performance and polarization potential has been addressed in several works; however the vast majority discusses its effect when wastewater or freshwater inocula are employed, and fewer reports focus on inocula from highly-saline environments. Moreover, the effect of the polarization potential on current production is not fully understood. To determine if the polarization potential has a significant effect on current production, eight bioanodes were grown by chronoamperometry at positive and negative potentials relative to the reference electrode (+0.34 V/SHE and −0.16 V/SHE), in a three-electrode set-up employing sediments from a hyperhaline coastal lagoon. The maximum current density obtained was the same, despite the differences in the applied potential. Our findings indicate that even if differences in organic matter removal and coulombic efficiency are obtained, the polarization potential had no statistically significant effect on overall current density production.

ACS Style

Muriel González-Muñoz; Xochitl Dominguez-Benetton; Jorge Domínguez-Maldonado; David Valdés-Lozano; Daniella Pacheco-Catalán; Otto Ortega-Morales; Liliana Alzate-Gaviria. Polarization Potential Has No Effect on Maximum Current Density Produced by Halotolerant Bioanodes. Energies 2018, 11, 529 .

AMA Style

Muriel González-Muñoz, Xochitl Dominguez-Benetton, Jorge Domínguez-Maldonado, David Valdés-Lozano, Daniella Pacheco-Catalán, Otto Ortega-Morales, Liliana Alzate-Gaviria. Polarization Potential Has No Effect on Maximum Current Density Produced by Halotolerant Bioanodes. Energies. 2018; 11 (3):529.

Chicago/Turabian Style

Muriel González-Muñoz; Xochitl Dominguez-Benetton; Jorge Domínguez-Maldonado; David Valdés-Lozano; Daniella Pacheco-Catalán; Otto Ortega-Morales; Liliana Alzate-Gaviria. 2018. "Polarization Potential Has No Effect on Maximum Current Density Produced by Halotolerant Bioanodes." Energies 11, no. 3: 529.

Journal article
Published: 27 February 2018 in Energies
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The macroalgae consortium biomass in the Mexican Caribbean represents an emerging and promising biofuel feedstock. Its biological pretreatment and potential for energetic conversion to biomethane were investigated, since some macroalgae have hard cell walls that present an obstacle to efficient methane production when those substrates are used. It has been revealed by anaerobic digestion assays that pretreatment with a Bm-2 strain (Trametes hirsuta) isolated from decaying wood in Yucatan, Mexico was 104 L CH4 kg·VS−1; In fact, the fungal pretreatment produced a 20% increase in methane yield, with important amounts of alkali metals Ca, K, Mg, Na of 78 g/L, ash 35.5% and lignin 15.6%. It is unlikely that high concentrations of ash and alkali metals will produce an ideal feedstock for combustion or pyrolysis, but they can be recommended for a biological process.

ACS Style

Raul Tapia-Tussell; Julio Avila-Arias; Jorge Domínguez Maldonado; David Valero; Edgar Olguin-Maciel; Daisy Pérez-Brito; Liliana Alzate-Gaviria. Biological Pretreatment of Mexican Caribbean Macroalgae Consortiums Using Bm-2 Strain (Trametes hirsuta) and Its Enzymatic Broth to Improve Biomethane Potential. Energies 2018, 11, 494 .

AMA Style

Raul Tapia-Tussell, Julio Avila-Arias, Jorge Domínguez Maldonado, David Valero, Edgar Olguin-Maciel, Daisy Pérez-Brito, Liliana Alzate-Gaviria. Biological Pretreatment of Mexican Caribbean Macroalgae Consortiums Using Bm-2 Strain (Trametes hirsuta) and Its Enzymatic Broth to Improve Biomethane Potential. Energies. 2018; 11 (3):494.

Chicago/Turabian Style

Raul Tapia-Tussell; Julio Avila-Arias; Jorge Domínguez Maldonado; David Valero; Edgar Olguin-Maciel; Daisy Pérez-Brito; Liliana Alzate-Gaviria. 2018. "Biological Pretreatment of Mexican Caribbean Macroalgae Consortiums Using Bm-2 Strain (Trametes hirsuta) and Its Enzymatic Broth to Improve Biomethane Potential." Energies 11, no. 3: 494.

Research article
Published: 23 October 2017 in Environmental Science and Pollution Research
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In Mexico, the corn tortilla is a food of great economic importance. Corn tortilla production generates about 1500-2000 m(3) of wastewater per 600 tons of processed corn. Although this wastewater (also known as nejayote) has a high organic matter content, few studies in Mexico have analyzed its treatment. This study presents fresh data on the potential methane production capacity of nejayote in a two-phase anaerobic digestion system using an Anaerobic-Packed Column Reactor (APCR) to optimize the acidogenic phase and an up-flow anaerobic sludge blanket (UASB) reactor to enhance the methanogenic process. Results indicate that day 8 was ideal to couple the APCR to the UASB reactor. This allowed for a 19-day treatment that yielded 96% COD removal and generated a biogas containing 84% methane. The methane yield was 282 L kg(-1) of CODremoved. Thus, two-phase anaerobic digestion is an efficient process to treat nejayote; furthermore, this study demonstrated the possibility of using an industrial application by coupling the APCR to the UASB reactor system, in order to assess its feasibility for biomethane generation as a sustainable bioenergy source.

ACS Style

Elda España-Gamboa; Jorge Arturo Domínguez-Maldonado; Raul Tapia-Tussell; Jose Silvano Chale-Canul; Liliana Alzate-Gaviria. Corn industrial wastewater (nejayote): a promising substrate in Mexico for methane production in a coupled system (APCR-UASB). Environmental Science and Pollution Research 2017, 25, 712 -722.

AMA Style

Elda España-Gamboa, Jorge Arturo Domínguez-Maldonado, Raul Tapia-Tussell, Jose Silvano Chale-Canul, Liliana Alzate-Gaviria. Corn industrial wastewater (nejayote): a promising substrate in Mexico for methane production in a coupled system (APCR-UASB). Environmental Science and Pollution Research. 2017; 25 (1):712-722.

Chicago/Turabian Style

Elda España-Gamboa; Jorge Arturo Domínguez-Maldonado; Raul Tapia-Tussell; Jose Silvano Chale-Canul; Liliana Alzate-Gaviria. 2017. "Corn industrial wastewater (nejayote): a promising substrate in Mexico for methane production in a coupled system (APCR-UASB)." Environmental Science and Pollution Research 25, no. 1: 712-722.

Journal article
Published: 23 January 2017 in Journal of Biological Engineering
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During hydrous ethanol production from the sugar refinery industry in Mexico, vinasse is generated. Phenolic compounds and melanoidins contribute to its color and make degradation of the vinasse a difficult task. Although anaerobic digestion (AD) is feasible for vinasse treatment, the presence of recalcitrant compounds can be toxic or inhibitory for anaerobic microorganism. Therefore, this study presents new data on the coupled of the FBR (Fluidized Bed Bioreactor) to the UASB (Upflow Anaerobic Sludge Blanket) reactor under non-sterile conditions by T. versicolor. Nevertheless, for an industrial application, it is necessary to evaluate the performance in this kind of proposal system. Therefore, this study used a FBR for the removal of phenolic compounds (67%) and COD (38%) at non-sterile conditions. Continuous operation of the FBR was successfully for 26 days according to the literature. When the FBR was coupled to the UASB reactor, we obtained a better quality of effluent, furthermore methane content and yield were 74% and 0.18 m3 CH4/ kg CODremoval respectively. This study demonstrated the possibility of using for an industrial application the coupled of the FBR to the UASB reactor under non-sterile conditions. Continuous operation of the FBR was carried out successfully for 26 days, which is the highest value found in the literature.

ACS Style

Elda España-Gamboa; Teresa Vicent; Xavier Font; Jorge Dominguez-Maldonado; Blondy Canto-Canché; Liliana Alzate-Gaviria. Pretreatment of vinasse from the sugar refinery industry under non-sterile conditions by Trametes versicolor in a fluidized bed bioreactor and its effect when coupled to an UASB reactor. Journal of Biological Engineering 2017, 11, 1 -11.

AMA Style

Elda España-Gamboa, Teresa Vicent, Xavier Font, Jorge Dominguez-Maldonado, Blondy Canto-Canché, Liliana Alzate-Gaviria. Pretreatment of vinasse from the sugar refinery industry under non-sterile conditions by Trametes versicolor in a fluidized bed bioreactor and its effect when coupled to an UASB reactor. Journal of Biological Engineering. 2017; 11 (1):1-11.

Chicago/Turabian Style

Elda España-Gamboa; Teresa Vicent; Xavier Font; Jorge Dominguez-Maldonado; Blondy Canto-Canché; Liliana Alzate-Gaviria. 2017. "Pretreatment of vinasse from the sugar refinery industry under non-sterile conditions by Trametes versicolor in a fluidized bed bioreactor and its effect when coupled to an UASB reactor." Journal of Biological Engineering 11, no. 1: 1-11.

Journal article
Published: 07 January 2017 in Environmental Science and Pollution Research
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Sediment microbial fuel cells (SMFCs) are devices that generate electrical energy through sediments rich in organic matter (OM). The present study assessed the potential of sediments collected at two sites in Yucatan, Mexico, (the swamp of Progreso port and Yucalpetén dock) to be used in these electrochemical devices. Sediments were collected during the rainy and winter seasons and were monitored in the SMFC for 120 days through electrochemical and physicochemical characterization. OM removal in the SMFC ranged from 8.1-18.01%, generating a maximum current density of 232.46 mA/cm(2) and power density of 95.85 mW/cm(2). SUVA analysis indicated that with a young soil, the ratio E4/E6 presented evidence directly related to the degradation of aromatic and aliphatic compound formation, implying humification and, therefore, sediment enrichment.

ACS Style

Nancy Karina González-Gamboa; David Sergio Valdés-Lozano; Luis Felipe Barahona-Pérez; Liliana Alzate-Gaviria; Jorge Arturo Domínguez-Maldonado. Removal of organic matter and electricity generation of sediments from Progreso, Yucatan, Mexico, in a sediment microbial fuel cell. Environmental Science and Pollution Research 2017, 24, 5868 -5876.

AMA Style

Nancy Karina González-Gamboa, David Sergio Valdés-Lozano, Luis Felipe Barahona-Pérez, Liliana Alzate-Gaviria, Jorge Arturo Domínguez-Maldonado. Removal of organic matter and electricity generation of sediments from Progreso, Yucatan, Mexico, in a sediment microbial fuel cell. Environmental Science and Pollution Research. 2017; 24 (6):5868-5876.

Chicago/Turabian Style

Nancy Karina González-Gamboa; David Sergio Valdés-Lozano; Luis Felipe Barahona-Pérez; Liliana Alzate-Gaviria; Jorge Arturo Domínguez-Maldonado. 2017. "Removal of organic matter and electricity generation of sediments from Progreso, Yucatan, Mexico, in a sediment microbial fuel cell." Environmental Science and Pollution Research 24, no. 6: 5868-5876.

Journal article
Published: 03 October 2016 in Microbial Cell Factories
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Agro-industrial wastes are an energy source for different industries. However, its application has not reached small industries. Previous and current research activities performed on the acidogenic phase of two-phase anaerobic digestion processes deal particularly with process optimization of the acid-phase reactors operating with a wide variety of substrates, both soluble and complex in nature. Mathematical models for anaerobic digestion have been developed to understand and improve the efficient operation of the process. At present, lineal models with the advantages of requiring less data, predicting future behavior and updating when a new set of data becomes available have been developed. The aim of this research was to contribute to the reduction of organic solid waste, generate biogas and develop a simple but accurate mathematical model to predict the behavior of the UASB reactor. The system was maintained separate for 14 days during which hydrolytic and acetogenic bacteria broke down onion waste, produced and accumulated volatile fatty acids. On this day, two reactors were coupled and the system continued for 16 days more. The biogas and methane yields and volatile solid reduction were 0.6 ± 0.05 m3 (kg VSremoved)-1, 0.43 ± 0.06 m3 (kg VSremoved)-1 and 83.5 ± 9.8 %, respectively. The model application showed a good prediction of all process parameters defined; maximum error between experimental and predicted value was 1.84 % for alkalinity profile. A linear predictive adaptive model for anaerobic digestion of onion waste in a two-stage process was determined under batch-fed condition. Organic load rate (OLR) was maintained constant for the entire operation, modifying effluent hydrolysis reactor feed to UASB reactor. This condition avoids intoxication of UASB reactor and also limits external buffer addition.

ACS Style

Harvey Milquez-Sanabria; Luis Blanco-Cocom; Liliana Alzate-Gaviria. A fast linear predictive adaptive model of packed bed coupled with UASB reactor treating onion waste to produce biofuel. Microbial Cell Factories 2016, 15, 167 -10.

AMA Style

Harvey Milquez-Sanabria, Luis Blanco-Cocom, Liliana Alzate-Gaviria. A fast linear predictive adaptive model of packed bed coupled with UASB reactor treating onion waste to produce biofuel. Microbial Cell Factories. 2016; 15 (1):167-10.

Chicago/Turabian Style

Harvey Milquez-Sanabria; Luis Blanco-Cocom; Liliana Alzate-Gaviria. 2016. "A fast linear predictive adaptive model of packed bed coupled with UASB reactor treating onion waste to produce biofuel." Microbial Cell Factories 15, no. 1: 167-10.

Articles
Published: 08 January 2016 in Biofuels
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To test the viability of incorporating a stacked-microbial fuel cell (SMFC) within a typical septic tank, 15 cartridges of MFCs with proton exchange membrane without catalysts were installed in a real system considered with a pretreatment. Both chemical oxygen demand (COD) removal and electricity generation using super capacitors by electricity storage were investigated under continuous flow mode. Three MFCs A1, B4 and C2 with 109.40 ± 34.25 mW/m3, 131.58 ± 27.75 mW/m3 and 124.01 ± 27.57 mW/m3, respectively, were chosen for testing. The organic loading rate was 0.24, 0.52 and 1.05 kg DQO/m3-d corresponding to 200, 500 and 1000 ppm. Total COD removal and total coulombic efficiency were 89.67 ± 5.19% and 48.07 ± 2.33%. The results of this study suggest that MFCs may be suitable for deployment in a septic tank. This research has demonstrated the great challenges in applying a stack of MFC in scale-up. Rint showed that anode resistances are higher than cathode; however, the configuration seems to be indicated for this kind of system depuration in developing countries. An electrochemical model must be developed for scale up which explains performance and electrochemical data. It is necessary to develop experiments in scale up and to test the feasibility of implementation.

ACS Style

Liliana Alzate-Gaviria; Orlando Garcia-Rodriguez; Manuel Flota-Bañuelos; Francisco Del Rio Jorge-Rivera; Gerardo Raymundo Cámara Chalé; Jorge Domínguez-Maldonado. Stacked-MFC into a typical septic tank used in public housing. Biofuels 2016, 7, 79 -86.

AMA Style

Liliana Alzate-Gaviria, Orlando Garcia-Rodriguez, Manuel Flota-Bañuelos, Francisco Del Rio Jorge-Rivera, Gerardo Raymundo Cámara Chalé, Jorge Domínguez-Maldonado. Stacked-MFC into a typical septic tank used in public housing. Biofuels. 2016; 7 (2):79-86.

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Liliana Alzate-Gaviria; Orlando Garcia-Rodriguez; Manuel Flota-Bañuelos; Francisco Del Rio Jorge-Rivera; Gerardo Raymundo Cámara Chalé; Jorge Domínguez-Maldonado. 2016. "Stacked-MFC into a typical septic tank used in public housing." Biofuels 7, no. 2: 79-86.

Journal article
Published: 19 August 2015 in Molecules
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Vinasse is the dark-colored wastewater that is generated by bioethanol distilleries from feedstock molasses. The vinasse that is generated from molasses contains high amounts of pollutants, including phenolic compounds and melanoindin. The goal of this work was to study the expression of laccase genes in the Trametes hirsuta strain Bm-2, isolated in Yucatan, Mexico, in the presence of phenolic compounds, as well as its effectiveness in removing colorants from vinasse. In the presence of all phenolic compounds tested (guaiacol, ferulic acid, and vanillic acid), increased levels of laccase-encoding mRNA were observed. Transcript levels in the presence of guaiacol were 40 times higher than those in the control. The lcc1 and lcc2 genes of T. hirsuta were differentially expressed; guaiacol and vanillin induced the expression of both genes, whereas ferulic acid only induced the expression of lcc2. The discoloration of vinasse was concomitant with the increase in laccase activity. The highest value of enzyme activity (2543.7 U/mL) was obtained in 10% (v/v) vinasse, which corresponded to a 69.2% increase in discoloration. This study demonstrates the potential of the Bm-2 strain of T. hirsuta for the biodegradation of vinasse.

ACS Style

Raúl Tapia-Tussell; Daisy Pérez-Brito; Claudia Torres-Calzada; Alberto Cortés-Velázquez; Liliana Alzate-Gaviria; Rubí Chablé-Villacís; Sara Solís-Pereira. Laccase Gene Expression and Vinasse Biodegradation by Trametes hirsuta Strain Bm-2. Molecules 2015, 20, 15147 -15157.

AMA Style

Raúl Tapia-Tussell, Daisy Pérez-Brito, Claudia Torres-Calzada, Alberto Cortés-Velázquez, Liliana Alzate-Gaviria, Rubí Chablé-Villacís, Sara Solís-Pereira. Laccase Gene Expression and Vinasse Biodegradation by Trametes hirsuta Strain Bm-2. Molecules. 2015; 20 (8):15147-15157.

Chicago/Turabian Style

Raúl Tapia-Tussell; Daisy Pérez-Brito; Claudia Torres-Calzada; Alberto Cortés-Velázquez; Liliana Alzate-Gaviria; Rubí Chablé-Villacís; Sara Solís-Pereira. 2015. "Laccase Gene Expression and Vinasse Biodegradation by Trametes hirsuta Strain Bm-2." Molecules 20, no. 8: 15147-15157.