A5045171140- Environmental Impact and Sustainability
- Process Optimization and Integration
- Biofuel production and bioconversion
- Energy and Environment Impacts
- Advanced Control Systems Optimization
- Photovoltaic Systems and Sustainability
- Thermochemical Biomass Conversion Processes
- Biodiesel Production and Applications
- Environmental Sustainability and Education
- Petroleum Processing and Analysis
- Global Energy and Sustainability Research
- Zeolite Catalysis and Synthesis
- Sugarcane Cultivation and Processing
- Clay minerals and soil interactions
- Subcritical and Supercritical Water Processes
- Fluid Dynamics and Heat Transfer
- Microwave Dielectric Ceramics Synthesis
- Catalysis for Biomass Conversion
- Enzyme Catalysis and Immobilization
- Microbial Metabolic Engineering and Bioproduction
- Anaerobic Digestion and Biogas Production
- Membrane Separation Technologies
- Fault Detection and Control Systems
- Coal and Its By-products
- Phase Equilibria and Thermodynamics
Universidade Federal de Santa Maria
2015-2024
Carl Gustav Carus-Institut
2016
Hirslanden Klinik Aarau
2006
Cornell University
1980-1991
Max Planck Society
1980
APPLICABILITY OF RICE HUSK ASH.Currently, the accumulation of rice husk is a serious environmental problem.The burning generates considerable volume ash, that falls to ground and gets into air rivers, causing disequilibrium in ecosystem.This motived research solutions aim exploit husks for energy generation ashes developing diverse technological products.This work presents possibilities using their after burning.
The correlations developed over the past few decades for prediction of hydraulics characteristics sieve trays without downcomers (dual flow) are reviewed. parameters assessed froth height, pressure drop, capacity, and efficiency. Discussions each correlation presented.
The components of fusel oil form azeotropes with water, resulting in challenges obtaining hydrous ethanol fuel (HEF) and increasing investment operating costs. aim this study was to evaluate how the presence affected HEF distillation. Mixtures (6.0 6.5 % w/w) water (93.0 94 containing different concentrations (zero 0.5 3-methyl-1-butanol, 2-methyl-1-propanol, propan-1-ol propan-2-ol were distilled a laboratory apparatus. Under total reflux conditions, compliance Brazilian legislation...
Cassava starch can be converted into sugars by enzymatic hydrolysis to used for ethanol production. In this work, the studied variables were and enzymes concentration seeking a higher conversion of reducing routine. Two series experiments conducted following steps gelatinization, liquefaction, saccharification, ending with fermentation step. It was found that 100–250 times increase in α-amylase results 23% yield. Therefore, an optimal enzyme could found. The glucoamylase has proved more...
Rio Grande do Sul (RS) State edaphoclimatic conditions are suitable only to produce ethanol in small scale. However, scale production (SSEP) was not proven be feasible because of its lower process efficiency compared large scale, and environmental impacts were assessed. The objective this study is evaluate SSEP through life cycle assessment (LCA) energy analysis (EEA), showing potential scenarios improvement efficiency. Eco-Indicator 99 CML 2 Baseline 2000 the methods, results demonstrated...
A partir da vigência do Protocolo de Kyoto houve um interesse renovado pela tecnologia dos biodigestores. Como eles permitem uma redução na emissão gases efeito estufa, em relação a outros métodos tratamento dejetos, sua implantação pode permitir comercialização créditos carbono, resultando valores monetários. O presente trabalho tem como objetivo analisar o processo disseminação desta Microrregião Santa Rosa, situada Mesorregião Noroeste riograndense, impulsionada, especialmente, por...
A presente análise tem a finalidade de comparar o desempenho entre unidades e atividades produtivas, interligando os parâmetros energéticos aos econômicos. O objetivo deste trabalho foi analisar relação energia produzida consumida durante processo produção das principais culturas cereais do Estado Rio Grande Sul, saber, trigo, arroz soja, em contraposição resultados econômicos respectivas atividades. pesquisa tipo exploratória, partir estudos multicaso, com uso bibliográfica, análises...
A yield increase in the distillation step reveals a promising way to guarantee technical and economic feasibility for small-scale ethanol production (SSEP), up 30 L · h−1. The objective of this study is assess differentiated distiller, hybrid composition involving Vigreux column packing (Raschig rings) stripping rectifying sections, respectively. To evaluate seven tests were performed continuous operation system. feed vaporization rates varied so that their influence on operational...
Small scale ethanol production process faces a number of challenges that negatively impact productivity and economic costs. The present work aims at finding alternative materials with lower cost suitable resistance to replace the stainless steel commonly used in distillation columns small businesses. For we analyzed chemical mechanical behavior nine different polymeric materials. An important parameter consider this case is compatibility polymer ethanol, which was determined according ASTM...
Batch distillation applied to hydrous ethanol fuel (HEF) production on a small scale still requires operating conditions that ensure optimal top product quality and productivity. The aim of this study is statistically validate batch through the employment response surface methodology (RSM). Operational productivity parameters were formulated in order guarantee compliance with legal requirements for concentration, besides providing support information control HEF scale. reboiler dephlegmator...