A5085375386- Corrosion Behavior and Inhibition
- Water Treatment and Disinfection
- Inflammatory Bowel Disease
- Microscopic Colitis
- Mine drainage and remediation techniques
- Arsenic contamination and mitigation
- Wastewater Treatment and Nitrogen Removal
- Concrete Corrosion and Durability
- Bacterial biofilms and quorum sensing
- Heavy metals in environment
- Hydrology and Drought Analysis
- Water Resource Management and Quality
- Cellular Automata and Applications
- Immunodeficiency and Autoimmune Disorders
- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Membrane Separation Technologies
- Hydrogen embrittlement and corrosion behaviors in metals
- Microbial Fuel Cells and Bioremediation
- Climate variability and models
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Environmental remediation with nanomaterials
- Water Systems and Optimization
- Constructed Wetlands for Wastewater Treatment
Pontificia Universidad Católica de Chile
2014-2024
Clínica Las Condes
2018-2022
Inria Chile
2022
Hospital San Juan de Dios
2021
University of Chile
2021
Centre For Sustainable Urban Development
2013-2017
Hospital Barros Luco-Trudeau
2017
United Nations Development Programme
2008-2011
University of Wisconsin–Madison
1999-2005
Columbia University
2002-2003
A fully quantitative cellular automaton (CA) biofilm model was developed. The describes substrate and biomass as discrete particles existing interacting in a specified physical domain. Substrate move by random walks, simulating molecular diffusion. Microbial grow attached to surface or other microbial particles, consume duplicate if sufficient amount of is consumed. dynamics the system are simulated using stochastic processes that represent occurrence specific events, such diffusion,...
A mathematical model to simulate the three-dimensional growth of multispecies anaerobic biofilms is developed and tested with a two-species biofilm composed sulfate-reducing bacteria methanogens. The numerical approach based on separation biological, physical, chemical phenomena so that quasi-steady-state conditions can be used in solution. Simulations Desulfovibrio vulgaris Methanobacterium formicicum result formation heterogeneous structure composition. predicts different structures...
Agricultural development lies at the heart of poverty reduction and increased food security most developing nations. Sub‐Saharan Africa (hereafter referred to as Africa) is, however, only region in world where per capita agricultural productivity has remained stagnant over past 40 years. In Asia Latin America, use tailored techniques technologies transformed practice its productivity, leading what been called “green revolution.” The dissemination uniquely African green revolution not...
This study used culture-dependent and culture-independent approaches to characterize bacterial communities in copper plumbing corrosion assess biofilm formation resistance of heterotrophic bacteria isolated from pipes.Water pipes were collected a cold-water household distribution system affected by 'blue water' presenting formation. Corrosion-promoting ageing experiments performed with conditioned unused filled unfiltered filtered sampled water as nonsterile sterile treatments, respectively....
We used modeling to predict the energy and cost savings associated with air-based, hybrid membrane-biofilm reactor (hybrid MfBR). This process is obtained by replacing fine-bubble diffusers in conventional activated sludge air-supplying, hollow-fiber membrane modules. Evaluated processes included removal of chemical oxygen demand (COD), combined COD total nitrogen (TN) removal, growth (biofilm suspended). Target concentrations TN were based on high-stringency water reuse scenarios. Results...
Traditional studies of copper release in plumbing systems assume that the water extracted from a pipe follows plug-type flow and surface does not interact with bulk under conditions. We characterized actual stagnation-flushing cycles household undergoing corrosion presence microbial biofilm. The mass released 10 experiments was on average 8 times value estimated by using plug-flow assumption. experimental pattern explained an advection-diffusion model only if high concentration occurs near...
The effects of tidal cycles associated with the water level on biocorrosion stainless steel AISI 316L were studied. Steel coupons exposed to different conditions immersion in mesocosms fed by fresh seawater either continuously or accordance periodicity natural tides. After 5 and 15 weeks, all found have undergone ennoblement formation a biofilm. Analysis composition bacterial community using denaturing gradient gel electrophoresis (DGGE) revealed differences biological succession. exposure...
Ocean conditions in the tropical Pacific seem to be signaling emergence of another El Niño event. Even though it is uncertain what will happen next two three seasons, climate forecasting centers are beginning advise planners ENSO‐sensitive regions review their contingency plans. Here, we examine potential for floods western United States as measured by annual maximum flood region. The timing (figure 1) and causes vary across States. Nevertheless, correlations with January‐April averages...
A benchmark problem was defined to evaluate the performance of different mathematical biofilm models. The consisted heterotrophic bacteria degrading organic substrate and oxygen. Mathematical models tested ranged from simple analytical multidimensional numerical For more or less flat biofilms it shown that provide very similar results compared complex solutions. When considering a heterogeneous morphology effect an increased external mass transfer resistance much significant surface area...