Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Optimized glycerol uptake from biodiesel by activated carbon prepared of Pequi (Caryocar brasiliensis Camb.) biomass residues: A novel raw material option in Brazil
Optimized glycerol removal by activated carbon prepared with Pequi biomass residues (PBAC) was performed under the effect of different temperatures, doses of PBAC, and contact times. The experiments were arranged in a central composite design strategy following a 23 factorial configuration, totalizing 30 runs. Uptake of glycerol fluctuated between 71.3% and 96.9%, and the experimental data were better represented by a quadratic mathematical model (R2 > 0.99, p < 0.01). All independent variables and their interactions presented statistical significance (p < 0.05) on the process (temperature, p = 0.033; PBAC dosage, p < 0.0001; and contact time, p = 0.024). The interaction between increased temperatures and PBAC dosages lowered the glycerol uptake in approximately 25%. Glycerol uptake fluctuated between 85% and 87% when there was an interaction between increased temperatures and contact times. The highest glycerol uptake peak (96.9%) occurred at the lowest PBAC dosage (0.125 g), a contact time of 25 min, and a temperature of 22.5 °C. An optimized uptake of 95.6% occurred when variables mutually correlated at a temperature of 21.7 °C, a PBAC dosage of 0.29 g, and a contact time of 23.4 min. Validation experiments predicted a removal efficiency of 90.1% ± 6.64, differing in 5.5% from the optimized conditions. The values randomly predicted by the Monte Carlo simulation for glycerol removal efficiency were in close agreement with the experimental data. The lack of fit to the quadratic model was affected by the independent variables in the following magnitude order: contact time < PBAC dose < temperature.
Optimized glycerol uptake from biodiesel by activated carbon prepared of Pequi (Caryocar brasiliensis Camb.) biomass residues: A novel raw material option in Brazil
Optimized glycerol removal by activated carbon prepared with Pequi biomass residues (PBAC) was performed under the effect of different temperatures, doses of PBAC, and contact times. The experiments were arranged in a central composite design strategy following a 23 factorial configuration, totalizing 30 runs. Uptake of glycerol fluctuated between 71.3% and 96.9%, and the experimental data were better represented by a quadratic mathematical model (R2 > 0.99, p < 0.01). All independent variables and their interactions presented statistical significance (p < 0.05) on the process (temperature, p = 0.033; PBAC dosage, p < 0.0001; and contact time, p = 0.024). The interaction between increased temperatures and PBAC dosages lowered the glycerol uptake in approximately 25%. Glycerol uptake fluctuated between 85% and 87% when there was an interaction between increased temperatures and contact times. The highest glycerol uptake peak (96.9%) occurred at the lowest PBAC dosage (0.125 g), a contact time of 25 min, and a temperature of 22.5 °C. An optimized uptake of 95.6% occurred when variables mutually correlated at a temperature of 21.7 °C, a PBAC dosage of 0.29 g, and a contact time of 23.4 min. Validation experiments predicted a removal efficiency of 90.1% ± 6.64, differing in 5.5% from the optimized conditions. The values randomly predicted by the Monte Carlo simulation for glycerol removal efficiency were in close agreement with the experimental data. The lack of fit to the quadratic model was affected by the independent variables in the following magnitude order: contact time < PBAC dose < temperature.
Optimized glycerol uptake from biodiesel by activated carbon prepared of Pequi (Caryocar brasiliensis Camb.) biomass residues: A novel raw material option in Brazil
Cardoso, Carlos Magno Marques (Autor:in) / Zavarize, Danilo Gualberto (Autor:in) / Vieira, Glaúcia Eliza Gama (Autor:in)
01.05.2019
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Beitrag zur Morphologie von Caryocar nuceferum L.
| TIBKAT | 1939
Beitrag zur Morphologie von Caryocar nuciferum L
| UB Braunschweig | 1939