Fernando Toyohiko Wakida

Fernando Toyohiko Wakida
Autonomous University of Baja California | UABC · Facultad de Ciencias Químicas e Ingeniería

Profesor-investigador, PhD

About

41
Publications
9,773
Reads
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1,138
Citations
Citations since 2016
12 Research Items
754 Citations
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2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction
Dr. Fernando T. Wakida Kusunoki is a professor in the Chemical Science and Engineering Department in UABC campus Tijuana. His main research area is the evaluation of environmental pollution. His research projects has been on soil pollution by heavy metals; groundwater quality and stormwater quality. His actual research project is the evaluation of stormwater quality in the city of Tijuana in order to propose treatment methods for the reuse this resource.
Additional affiliations
July 2002 - present
Autonomous University of Baja California
August 1998 - June 2002
The University of Sheffield
Description
  • PhD student
Education
September 1998 - June 2002
The University of Sheffield
Field of study
  • Environmental Engineering
September 1995 - September 1996
Oxford Brookes University
Field of study
  • Environmental Assessment and Management
August 1985 - June 1989
Autonomous University of Baja California
Field of study
  • Chemical Engineering

Publications

Publications (41)
Article
The presence of microplastics has been reported in the marine environment and these pollutants have also been reported in food webs. Information about the presence of microplastics in the Haller's Round Ray (Urobatis halleri) and bottom sediments off the east coast of the Gulf of California is non-existent. The digestive tracts of individuals of th...
Article
Plastic particle occurrence in the digestive tracts of fishes from a tropical estuarine system in the Gulf of Cali-fornia was investigated. A total of 1095 fish were analysed, representing 15 species. In total 1384 particles of plastic debris were recovered from the gastrointestinal tracts of 552 specimens belonging to 13 species, and all consisted...
Article
Full-text available
The valley of Mexicali is one of the most important agricultural areas in the northwest of Mexico. Rapid urbanization has meant that parts of the agricultural channels and drains now lie within the urban area. To evaluate the concentrations of heavy metals in urban drain sediments, thirty-one samples were collected in the Mexicali urban area. Mean...
Article
Land-based sources are considered the most important source of microplastic pollution to marine environment. Stormwater runoff has been identified as one of the main pollutant contributors to water bodies. Seven sites were sampled to identify and quantify microplastics in stormwater runoff in Tijuana, Mexico. The median microplastic abundance found...
Article
Microplastics have become a concern in recent years because of their negative impact on marine and freshwater environments. Twenty-one sandy beach sites were sampled to investigate the occurrence and distribution of microplastics on the sandy beaches of the Baja California Peninsula, Mexico, as well as their spectroscopic characterization and morph...
Article
Full-text available
Purpose A study was carried out to evaluate the concentration of heavy metals (Pb, Cu, Cr, Cd, and Hg) and total petroleum hydrocarbons (TPH) in road-deposited sediments (RDS) from Tijuana, Mexico, and identify their possible sources. Materials and methods Thirty RDS samples were randomly collected during the dry season using a brush and dustpan a...
Article
Full-text available
The generation of electricity has been identified as one of the main pollutant activities, and some studies have established an increment of heavy metals in soil in the areas surrounding these plants. The aim of this study was to evaluate the soil concentrations of heavy metals in the zone surrounding a thermoelectric power in Mexico. Thirty-two to...
Article
In this work, poly (acrylamide-co-acrylic acid) partial sodium salt (P(AAM-co-AA)Na), and polyacrylamide (PAAM) membranes were synthesized for separation of ethanol:water blends. The membranes characteristics were evaluated to determine their ability to separate mixtures of ethanol:water and get dehydrate ethanol (95%). Synthesized membranes showed...
Article
Full-text available
Even though geothermal energy is a renewable energy source that is seen as cost-effective and environmentally friendly, emissions from geothermal plants can impact air, soil, and water in the vicinity of geothermal power plants. The Cerro Prieto geothermal complex is located 30 km southeast of the city of Mexicali in the Mexican state of Baja Calif...
Article
Road deposited sediment and roadside soil in the urban area of the city of Tijuana were collected and analyzed for 16 polycyclic aromatic hydrocarbons (PAHs). The ΣPAH concentration for road deposited sediment (RDS) ranged between 460 and 2027 µg/kg with an average of 933 µg/kg. The ΣPAH concentration in roadside soil was lower than in RDS, with a...
Article
http://www.tandfonline.com/eprint/8JyI7nTYhMetQusAeWvc/full An empirical model was developed using the experimental results, to predict the removal of nickel ions under the effect of an external electric field applied to an ultrafiltration membrane, electroultrafiltration process (EUF). Two commercial membranes from Millipore PLCC5 (regenerated ce...
Article
Full-text available
The freshwater mussel Dreissena rostriformis bugensis (Andrusov, 1897) has been identified as an invader on different continents. Here, we report the first record of quagga mussel species in México. We detected quagga mussels in El Carrizo reservoir in the Mexican state of Baja California on July 12, 2014. Additional studies in both regions indicat...
Article
Full-text available
RESUMEN El arroyo Alamar se encuentra en la parte este de la ciudad de Tijuana. Subyacente a este arroyo se encuentra un acuífero cuyo principal uso es el riego de hortalizas. Con el fin de llevar a cabo una evaluación preliminar del impacto que han generado las obras de revestimiento del arroyo en la calidad de agua del acuífero, se realizaron mue...
Article
Stormwater runoff from urban areas is a major source of many pollutants to water bodies. Suspended solids are one of the main pollutants because of their association with other pollutants. The objective of this study was to evaluate the relationship between suspended solids and other pollutants in stormwater runoff in the city of Tijuana. Seven sit...
Article
Full-text available
Eight sites were sampled during seven rain events to quantify and identify the sources of polycyclic aromatic hydrocarbons in urban runoff in the city of Tijuana, Mexico. The total ∑16 PAHs concentration ranged from 1113 to 4866 μg/Lin the sampled sites and the total suspended solid concentrations ranged from 7725 to 4413 μg/L. The high concentrati...
Article
Full-text available
The aim of this study was to evaluate soil pollution by heavy metals in an irregular settlement built on a dumpsite. The soil samples were analyzed for Cd, Cr, Cu, Pb and Ni. None of the concentrations found for the heavy metals analyzed were higher than the established Mexican official standards for contaminated soils. The mean concentrations foun...
Conference Paper
Con el propósito de cuantificar e identificar las fuentes de hidrocarburos policíclicos aromáticos (HAP) en escurrimientos pluviales urbanos se muestrearon ocho sitios durante siete eventos de lluvia durante el periodo 2009-2010. Las muestras fueron tratadas utilizando el método de extracción EPA 3510C y analizadas en un cromatógrafo con detecto...
Article
Full-text available
Waste oil / water constitute an environmental problem in many industries. This paper focuses on the study of highly stable emulsions of oil / water. Mexican environmental regulations establishes a maximum limit of 15- 25mg/L depending on the receiving federal (NOM-001-SEMARNAT-1996), and 25mg/L for the urban sewage system or municipal (NOM-002- SEM...
Article
Full-text available
We studied an electro-cross flow ultrafiltration system that uses charged and neutral ultrafiltration membranes and changes in pH and voltage to Pb, Ca and Fe. Simulation of the experimental data was performed with the aid of an artificial neural network (ANN), to obtain a mathematical model to predict metal ion remotion. Analysis of the experiment...
Article
Full-text available
Dumpsites can produce serious pollution problems in soil, water and air, and are the most frequent method of solid waste disposal in many developing countries. One of the pollution concerns at dumpsites is the emission of methane, which has been identified as a green house gas. In order to determine the surface emission of methane at an informal se...
Article
Full-text available
There are many potential sources of stormwater pollutants in urban areas; one of these sources is gas stations, which are numerous and spread city-wide. A study was conducted to evaluate the water quality of runoff from gas stations in the city of Tijuana, Mexico. Pollutant loads in runoff from gas stations in the study area were higher than in oth...
Article
Full-text available
The efficiency of humic acids (HA) removal from aqueous solutions by complexation-ultra-filtration (COUF) process, in the presence of the cationic water-soluble polymer, poly(diallyl dimethylammonium chloride) (PDADMAC) of different average Mw were studied; also the effect of mass ratio of HA to polymer, pH of solution on the HA removal were evalua...
Article
Full-text available
A study was conducted to determine the effects on crystallization process during addition of inorganic galvanic waste into glass-ceramics. The study used various waste generated from an industrial galvanoplasty plant with glass-ceramic for heat treatment to evaluate the crystallization process. The study also used scanning electron microscopy and e...
Chapter
The Tecate-Tijuana River is part of the Tijuana River Basin, which is a binational basin shared by Mexico and the United States of America. The explosive industry growth in the region of Tecate, Mexico has produced several negative environmental impacts in the Tecate-Tijuana River Basin. At the moment more than 30% of the water is used by industry...
Article
Full-text available
Ten sites along the Tecate River, Mexico were sampled to evaluate the cadmium, lead, nickel and chromium concentrations in sediments. The result shows contamination for cadmium in most of the sites, where two sites were class 4 (polluted to strongly polluted) according to geoaccumulation index proposed by Muller. Two sites were found polluted for a...
Article
Nitrate pollution has been identified as a major water quality issue in the UK. This study aimed to determine the potential additional loading of nitrate that could arise from the disturbance caused by house construction. The study is centred around the towns of Nottingham and Mansfield, UK, which are situated on a Triassic Sandstone aquifer. Soil...
Article
Nitrate is often seen as an agricultural pollutant of groundwater and so is expected to be at higher concentrations in the groundwaters surrounding a city than in those beneath it. However the difference between rural and urban nitrate concentrations is often small, due to the non-agricultural sources of nitrogen that are concentrated in cities. Th...
Conference Paper
Full-text available
The Alamar Creek is part of the Tijuana River basin, a basin shared by Mexico and the United States. The study area is located in the east side of the city of Tijuana, Baja California, Mexico, with an approximate area of 9 km 2. It encompasses a suburban area with a mix of land uses: sewered and unsewered residential areas and small-scale horticult...
Article
Full-text available
Nitrate pollution has been identified as a major water quality issue in the UK. The aim of this project is to research the rate of nitrate leaching to groundwater that arises from construction works. The study area is situated in Nottingham UK, which is situated on the Triassic Sandstone aquifer. Soil samples up to a depth of 2.50 m were taken from...
Conference Paper
Full-text available
In the UK, nitrate is often seen as an agricultural pollutant of groundwater, and is expected to be at higher concentrations in the groundwaters surrounding a city than in those beneath it. However the difference between rural and urban nitrate concentrations is often small, due to the non-agricultural sources of nitrogen that are concentrated in c...

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