In this study, a microbial consortium isolated from an activated sludge tank of conventional wastewater treatment plant was immobilized using sodium alginate (SA) as support material for contaminant biodegradation in wastewater. A volume 500 mL the SA beads (with mass concentration 25 g/L). The resulting were characterized, introduced into fluidized bed reactor, fed with 1000 sample, and characterized again after process. SA-immobilized microorganisms tested first degradation organic matter...

A methodology to estimate surface water quality using remote sensing is presented based on Landsat satellite imagery and in situ measurements taken every six months at four separate sampling locations a tropical reservoir from 2015 2019. The uses the Box–Cox transformation model normalize data three parameters: total organic carbon (TOC), dissolved solids (TDS), chlorophyll (Chl-a). After transformation, mathematical was generated for parameter multiple linear regression correlate normalized...

La calidad del agua para actividades humanas está cada vez más comprometida por el crecimiento poblacional, la expansión urbana y los residuos industriales agrícolas. cuenca río Culiacán, en Sinaloa, es clave producción agrícola país, con tierras intensivas que abarcan 60% de su superficie. Este estudio evalúa ocho drenes agrícolas cuenca, utilizando 22 parámetros físicos biológicos registrados CONAGUA entre 2012 2020. Se aplicaron cuatro índices un diagnóstico integral: índice contaminación...

Este estudio evalúa la calidad del agua acuífero Río Sinaloa mediante un enfoque integral que incluye análisis espacial y temporal, así como correlaciones entre parámetros fisicoquímicos, microbiológicos e iónicos. El permitió identificar variaciones en distribución de contaminantes distintos puntos muestreo, vinculando estos patrones con actividades antrópicas. realizado a lo largo 10 años (2012-2022), reveló tendencias fluctuaciones los calidad, destacando eventos contaminación...

Este estudio analiza las variaciones espaciales y temporales en la calidad del agua de acuíferos Sinaloa, centrándose parámetros fisicoquímicos clave. Los niveles pH se mantuvieron un rango saludable, indicando condiciones ligeramente alcalinas. Sin embargo, los sólidos disueltos totales (SDT) mostraron alta variabilidad, especialmente el acuífero Río Mocorito (ARM), sugiriendo posible contaminación. nitratos, cloruros sulfatos fueron elevados ARM, reflejando influencia actividades agrícolas...

The knowledge of the soil quality plays a vital role in agricultural sector. Despite its importance, there is scarce scientific information concerning this regard. objective research to develop methodology identify and select most appropriate indicators Soil Quality Index (SQI) region with high activity. For conformation, descriptive statistical analysis Pearson correlation matrix were performed that showed greater variation identified using Principal Components Analysis (PCA). A sensitivity...

Agricultural activities are highly related to the reduction of availability water resources due consumption freshwater for crop irrigation, use fertilizers and pesticides. In this study, quality Adolfo López Mateos (ALM) reservoir was evaluated. This is one most important reservoirs in Mexico since stored used mainly irrigation productive agricultural region. A comprehensive evaluation carried out by analyzing behavior 23 parameters at four sampling points period 2012-2019. The analysis...

UV radiation and ozonation were investigated as disinfection alternatives for the wastewater treatment plant. The inactivation of total fecal coliforms using ozone ultraviolet separate treatments was evaluated. Different concentrations (3 to 40 mg O3/L) applied fluencies ranging from 8.5 12 mJ/cm2 at different pH values (from 5 9) tested. Best results obtained doses near 20 mg/min with removals 72% 78% coliforms, respectively. also capable oxidizing organic matter in effluent measured COD...

We report experimental results on an optical fiber pressure sensor based multimode interference effects (MMIs). The key component is a small (MMF) section without cladding, which placed direct contact with polydimethilsiloxane polymer layer previously attached to pressure-sensitive membrane. When the applied increased, both area and induced stress MMF increase directly proportional pressure. Both contribute losses of propagating modes, since MMI spectrum formed by net effect that intensity...

Electrochemical techniques have been used for the discolouration of synthetic textile industrial wastewater by Fenton's process using a parallel plate reactor with reticulated vitreous carbon (RVC) cathode. It has shown that RVC is capable electro-generating and activating H2O2 in presence Fe(2+) added as catalyst stainless steel mesh anode material. A catholyte comprising 0.05 M Na2SO4, 0.001 FeSO4.7H2O, 0.01 H2SO4 fed oxygen was to activate H2O2.The anolyte contained only 0.8 H2SO4. The...

Groundwater is an important source of fresh water in the world. However, excessive extraction and increasing pollution represent a major challenge for sustainability Mexico. Nowadays, since quality changes aquifers are not noticeable, aquifer monitoring assessment imperious. In this study, Cuernavaca was evaluated using database 23 parameters 4 sampling points from 2012 to 2019. The spatial behavior variables described by interpolation. temporal evaluation groundwater carried out through...

This study was conducted to evaluate the ozone, UV and O₃/UV processes for reuse of sewage treatment plant effluent (Universidad Autonoma Metropolitana Azcapotzalco wastewater plant). The ozone/UV process compared individual ozone control parameters were total fecal coliforms. Different concentrations (6-12 mg O₃/min) different fluencies (6.7-20.12 mJ/cm²) tested. It is possible conclude than none achieved disinfection levels required comply with Mexican standard NOM-003-SEMARNAT-1997....