A5017097082- Biodiesel Production and Applications
- Thermochemical Biomass Conversion Processes
- Enzyme Catalysis and Immobilization
- Algal biology and biofuel production
- Forest Biomass Utilization and Management
- Microbial Metabolic Engineering and Bioproduction
- Microbial Applications in Construction Materials
- Lignin and Wood Chemistry
- Carbon Dioxide Capture Technologies
- Microbial Fuel Cells and Bioremediation
- Mine drainage and remediation techniques
- Biofuel production and bioconversion
- Enzyme-mediated dye degradation
- Fire effects on ecosystems
- Membrane Separation Technologies
- Phase Equilibria and Thermodynamics
- Wastewater Treatment and Nitrogen Removal
- Aerogels and thermal insulation
- Advanced Cellulose Research Studies
- Nanocomposite Films for Food Packaging
- Forest Management and Policy
- Chemical Synthesis and Reactions
- Crystallization and Solubility Studies
- Agricultural Engineering and Mechanization
- Solar-Powered Water Purification Methods
Universidad Católica de la Santísima Concepción
2018-2025
Millennium Science Initiative
2019-2022
University of Concepción
2019
Universidad de La Frontera
2008-2016
Microbially induced calcite precipitation (MICP) through a ureolytic pathway is process that promotes as result of the urease enzymatic activity several microorganisms. It has been studied for different technological applications, such soil bio-consolidation, bio-cementation, CO2 sequestration, among others. Recently, this proposed possible removing heavy metals from contaminated soils. However, no research reported dealing with MICP metal removal wastewater/waters. This (re)view proposes to...
Enzymatic biodiesel production kinetics under previously optimized conditions were investigated. Waste frying oil (WFO) was used as the raw material, Novozym 435 catalyst, methanol acyl acceptor and tert-butanol co-solvent. To investigate pure transesterification improving product properties, 3 Å molecular sieves incorporated into reaction to provide an anhydrous medium avoiding side reactions of hydrolysis esterification. The effects either WFO or on rate analyzed separately. described by a...
This research focused on the evaluation of potential use a soil-isolated bacteria, identified as Staphylococcus equorum, for microbial-induced calcite precipitation (MICP) and copper removal. Isolated bacteria were characterized considering growth rate, urease activity, calcium carbonate precipitation, tolerance minimum inhibitory concentration (MIC) precipitation. Results compared with Sporosarcina pasteurii, which is considered model strain MICP processes. The results indicated that S....
A series of tetrabutyl ammonium (TBA) salts V-included Keggin-type polyoxoanions with W (TBA4PW11V1O40 and TBA5PW10V2O40) Mo (TBA4PMo11V1O40 TBA5PMo10V2O40) as addenda atoms were prepared using a hydrothermal method. These synthesized materials characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance (DRS UV-Vis), thermogravimetric analysis (TGA), CHN elemental (EA), inductively coupled plasma spectrometry (ICP-MS), N2...
This study evaluated the stability and reusability of amino-functionalized nanocellulose aerogels as CO2-adsorbent materials. The modified aerogels, synthesized via a controlled silylation using N-[3-(trimethoxysilyl) propyl] ethylenediamine (DAMO), demonstrated excellent thermal up to 250 °C (TGA) efficient CO2 adsorption through chemisorption, which was main mechanism. performance assessed both isotherms decay pressure technique, revealing that capacity increased with higher amino group...
Biomass retention, required for high rate anaerobic wastewater treatment, can be accomplished coupling an bioreactor with membrane filtration. However, low flux seems to a common factor when operating bioreactors (AnMBRs). Modification of biomass properties may represent strategy improving flux. The addition flocculants was tested as tool increase. Six different products were in dead-end filtration experiments. Based on the results, two selected cross-flow tests. one presenting better...
Abstract BACKGROUND: Anaerobic treatment of saline wastewaters may be hindered by problems related with biomass retention, since at high salt concentrations formation biofilms and granules not proceed well. This research studied the use anaerobic membrane bioreactors (AnMBR) as a way to promote complete retention. A lab scale AnMBR fitted ceramic tubular was operated for 2 years. RESULTS: Results showed that enhanced retention produces conditions enabling wastewaters. Despite resulting...