A5030959153- Adsorption and biosorption for pollutant removal
- Chromium effects and bioremediation
- Water Quality Monitoring and Analysis
- Water Resource Management and Quality
- Microbial bioremediation and biosurfactants
- Plant and soil sciences
- Pharmaceutical and Antibiotic Environmental Impacts
- Extraction and Separation Processes
- Analytical chemistry methods development
- Dye analysis and toxicity
- Microbial Fuel Cells and Bioremediation
- Plant Ecology and Soil Science
- Invertebrate Taxonomy and Ecology
- Advanced Cellulose Research Studies
- Chemical and Environmental Engineering Research
- Environmental Conservation and Management
- Wastewater Treatment and Nitrogen Removal
- Soil Science and Environmental Management
- Anaerobic Digestion and Biogas Production
- Healthcare and Environmental Waste Management
- Collagen: Extraction and Characterization
- Biochemical and biochemical processes
- Environmental remediation with nanomaterials
- Environmental Justice and Health Disparities
- Coal and Its By-products
Universidad Autónoma de Nuevo León
2010-2020
Universidad de León
2014
John Wiley & Sons (Germany)
2013
Robert Bosch (India)
2013
University of Havana
2004
Abstract The potential use of spent coffee ground (SCG) for the removal copper has been investigated as a low‐cost adsorbent biosorption heavy metals. Adsorption batch experiments were conducted to determine isotherms and kinetics. equilibrium data found fit well Freundlich model an experimental maximum capacity ions 0.214 mmol/g was achieved. kinetics SCG studied at different adsorbate concentrations (0.1–1.0 mM) stirring speeds (100–400/min). results showed increase in ion uptake with...
Contamination by hexavalent chromium has had a large impact on modern society and human health. This problem is consequence of its great industrial applicability to several products processes. Short-term exposure can cause irritation, ulceration in skin stomach addition cancer, dermatitis, damage liver, renal circulation nervous tissues, with even death being observed response long-term exposures. Many techniques have been used for the remediation this pollutant, including physical chemical...
Abstract Bacterial species are able to colonize and establish communities in biotic abiotic surfaces. Moreover, within the past five decades, incidence of bacterial strains resistant currently used antibiotics has increased dramatically. This led diverse health issues economical losses for different industries. Therefore, there is a latent need develop new more efficient antimicrobials. work reports an production exopolysaccharide native yeast strain isolated from Mexican Northeast,...
Batch studies of phenol adsorption onto barley husk-activated carbon (BHAC) were performed at different BHAC doses, solution pH, temperatures, stirring speeds, particle sizes and initial concentrations. The maximum capacity was 98.83 mg g−1 25°C pH 7, similar to commercial activated carbon. external mass transfer minimised speeds greater than 400 min−1, the kinetics affected by both concentration temperature. Ethanol/water solutions 10% V/V most effective regenerating agent, with a...
This paper presents experimental and modeling data from a membrane-based wastewater treatment (WWT) pilot plant. The effluents various upstream steps of can-manufacturing plant were combined subjected to pretreatment process, which consisted coalescing filters, coagulation gravity settling, sand activated carbon polishing filtration, pressure-driven membrane such as reverse osmosis (RO). performance the RO was evaluated experiments conducted using continuous flow. complete separation scheme...
The presence of dyes in effluent is a matter concern due to their toxicologic and aesthetical effects. In this research, locally available agro-industrial wastes (Zea mays pericarp, ZMP; Agave tequilana bagasse, ATB; Medicago sativa waste, MSW) were used as alternative low-cost adsorbents for the removal methylene blue (MB) from aqueous solutions. characterized physically chemically by Fourier transform infrared, scanning electron microscopy, potentiometric titrations, N2 physisorption. MB...
The inhibitory effect of azo dyes and quinoid compounds on an anaerobic consortium was evaluated during a decolorization process biogas production. In addition, the impact such as lawsone (LAW) anthraquinone-2,6-disulfonate (AQDS) rate Direct Blue 71 (DB71) assessed. not completely inhibited under all tested dye concentrations (0.1–2 mmol l−1), evidenced by active presence at different (4, 8, 12 l−1) also production compared to control incubated without compounds. summary, affected greater...
The photocatalytic reduction of Cr(VI) from agricultural soil leachates irrigated with Cr(VI)-containing waste hydroponic solution was evaluated in this work. For purpose, zinc oxide used as a catalyst under UV irradiation (λ=365 nm ). preliminarily on synthetic solutions concentration 15 mg L −1 to optimize the loading and pH determine effect organic matter. Greater removal observed at 7, optimum found be 2 g −1, which achieved an 84% 6 h. influence dissolved matter through addition...
Abstract The capacity of Cladosporium cladosporioides biomass for removal Cr(VI) in aqueous solutions was evaluated. A 2 × factorial experiment design used to study the effects pH and doses. Lower values larger doses increased C. Cr(VI), reaching a reduction 492.85 mg g−1, significantly higher value compared other reported. kinetic rates followed pseudo-second order model, like fungal reported previously. apparent adsorption process described well by Freundlich isothermal model. However,...
Electrospinning is a micrometric or nanometric scale fiber manufacturing technique with structural factors such as greater contact surface and pore size that allows the incorporation of biological agents in its structure, increasing their potential for medical applications. Due to conditions required electrospinning process, high voltage, present work, evaluation antimicrobial activity schizophyllan-based membranes elaborated by at 20 kV incorporated Hamamelis virginiana was carried out...
An artificial neural network (ANN) was used to predict the biosorption of methylene blue on Spirulina sp. biomass. Genetic and anneal algorithms were tested with different quantity neurons at hidden layers determine optimal in ANN architecture. In addition, sensitivity analyses conducted optimised architecture for establishing which input variables (temperature, pH, biomass dose) significantly affect predicted data (removal efficiency or capacity). A number isotherm models also compared The...
Aims:The objective was to investigate the effect of copper at low concentrations in an Upflow Anaerobic Sludge Blanket (UASB) reactor performance under continuous conditions and its geochemical distribution anaerobic sludge through sequential extraction.Study Design: Continuous operation.
The biodegradation kinetics of BTE-oX and MTBE, mixed all together in the presence diesel-grown bioaugmented bacterial populations as high 885 mg/L VSS, was evaluated. effect soil aqueous samples Tergitol NP-10 on substrate rates were also Biodegradation evaluated for 54 h, every 6 h. All chemicals followed a first-order two-phase kinetic model, whereas MTBE zero-order removal model samples. much higher than those retarded rates. addition to containing had positive rate Substrate percent...
The biosorption of Pb2 + and Cd2 in a fixed bed column by immobilised Chlorella sp. was characterised column. Effect initial concentration , pH, pellet size on the capacity studied, at laboratory scale, using factorial experiment design 23, 10 cm height × 1 diameter continuous flow packed with biomass. Equilibrium uptake increased increasing metal ion concentration. It favoured to pH 5, 5 mm diameter. Langmuir model described equilibrium both metals. each single cation studied too large (50...