This page has only limited features, please log in for full access.
Cotton seed was submitted to fast pyrolysis in a fixed bed reactor and the liquid and solid products were characterized applying several techniques. The detailed chemical composition of the bio-oil was investigated using GC × GC/TOFMS combined with software tools and retention index. A total of 257 compounds were tentatively identified with 168 were confirmed by LTPRI. The most abundant compounds identified in the cotton seed bio-oil were nitrogenous (56 compounds) and phenolic (42 compounds) what distinguishes this bio oil from others, produced from various sources of biomass. The higher heating values of cotton seed and bio-oil were 19.34 MJ kg −1 and 34.25 MJ kg −1 respectively and demonstrating the feasibility of the use of cotton seed in its natural form for energy generation or as a secondary source once a bio-oil with these characteristics would be a suitable candidate for use in boilers for heating purposes or chemical extraction. The biochar had a significant carbon content and a high heating value (22.12 MJ kg −1), making it attractive for fuel applications. The activation methods used were able to improve the physical and chemical characteristics of the biochar, as demonstrated by methylene blue adsorption tests. The maximum adsorption capacity of NaOH-activated biochar was 23.82 mg g −1 while that of K2CO3-activated biochar was 332.40 mg g −1.
Carmem T. Primaz; Amparo Ribes-Greus; Rosângela A. Jacques. Valorization of cotton residues for production of bio-oil and engineered biochar. Energy 2021, 235, 121363 .
AMA StyleCarmem T. Primaz, Amparo Ribes-Greus, Rosângela A. Jacques. Valorization of cotton residues for production of bio-oil and engineered biochar. Energy. 2021; 235 ():121363.
Chicago/Turabian StyleCarmem T. Primaz; Amparo Ribes-Greus; Rosângela A. Jacques. 2021. "Valorization of cotton residues for production of bio-oil and engineered biochar." Energy 235, no. : 121363.
A set of styrene‐ethylene‐butylene‐styrene triblock copolymer (SEBS) membranes with 10 or 25 wt% divinyl‐benzene (DVB) as a crosslinking agent were prepared and validated. Physicochemical characterization revealed suitable hydrolytic and thermal stability of photo‐crosslinked membranes containing 25 wt% DVB and post‐sulfonated. These compositions were evaluated in H2/O2 single cells, and electrical and proton conductivities were furtherly assessed. The membranes with the milder post‐sulfonation showed greater proton conductivity than those with excessive sulfonation. In terms of electrical conductivity, a universal power law was applied, and the values obtained were low enough for being used as polyelectrolytes. At the analyzed temperatures, the charge transport process follows a long‐range pathway or vehicular model. Finally, fuel cell performance revealed the best behavior for the membrane with 25 wt% DVB, photo‐crosslinked during 30 min and mild sulfonated, with a promising power density of 526 mW·cm−2. Overall, the results obtained highlight the promising fuel cell performance of these cost‐effective triblock copolymer‐based membranes and indicate that higher sulfonation does not necessarily imply better power density.
Roberto Teruel‐Juanes; Carmen del Río; Oscar Gil‐Castell; Carmem Primaz; Amparo Ribes‐Greus. Triblock SEBS / DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity. Journal of Polymer Science 2021, 138, 50671 .
AMA StyleRoberto Teruel‐Juanes, Carmen del Río, Oscar Gil‐Castell, Carmem Primaz, Amparo Ribes‐Greus. Triblock SEBS / DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity. Journal of Polymer Science. 2021; 138 (28):50671.
Chicago/Turabian StyleRoberto Teruel‐Juanes; Carmen del Río; Oscar Gil‐Castell; Carmem Primaz; Amparo Ribes‐Greus. 2021. "Triblock SEBS / DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity." Journal of Polymer Science 138, no. 28: 50671.
Carmem Primaz; Tiago Schena; Eliane Lazzari; Elina B. Caramão; Rosangela Jacques. Influence of the temperature in the yield and composition of the bio-oil from the pyrolysis of spent coffee grounds: Characterization by comprehensive two dimensional gas chromatography. Fuel 2018, 232, 572 -580.
AMA StyleCarmem Primaz, Tiago Schena, Eliane Lazzari, Elina B. Caramão, Rosangela Jacques. Influence of the temperature in the yield and composition of the bio-oil from the pyrolysis of spent coffee grounds: Characterization by comprehensive two dimensional gas chromatography. Fuel. 2018; 232 ():572-580.
Chicago/Turabian StyleCarmem Primaz; Tiago Schena; Eliane Lazzari; Elina B. Caramão; Rosangela Jacques. 2018. "Influence of the temperature in the yield and composition of the bio-oil from the pyrolysis of spent coffee grounds: Characterization by comprehensive two dimensional gas chromatography." Fuel 232, no. : 572-580.
An improved and more sustainable waste management system is required for successful development of technologies based on renewable sources. Rice straw is submitted to controlled combustion reactions and the produced ashes are chemically treated to produce silica. After a chemical activation step, the activated silica shows potential as an adsorbent agent and will be used to remove the excess of nitrates in groundwater and wells in the area of Alginet (Valencia, Spain), selected as a vulnerable zone within the Nitrates Directive. The demonstration activity aims to have a local impact on municipalities of 200 inhabitants or fewer, decreasing from current nitrate concentrations close to 50 mg/L, to a target of 25 mg/L. In a successive step, the methodology will be transferred to other municipalities with similar nitrate problems (Piemonte, Italy) and replicated to remove different pollutants such as manure (the Netherlands) and waste waters from the textile industry (Italy).
Cristina Moliner; Roberto Teruel-Juanes; Carmem T. Primaz; Jose David Badia; Barbara Bosio; Pilar Campíns-Falcó; Carmen Molíns-Legua; Francesc Hernandez; Lorenzo Sanjuan-Navarro; Plàcid Madramany; José Morán; José Castro; Francisco Javier Sanchis; José Domingo Martínez; Frank Hiddink; Amparo Ribes-Greus; Elisabetta Arato. Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project. Sustainability 2018, 10, 3007 .
AMA StyleCristina Moliner, Roberto Teruel-Juanes, Carmem T. Primaz, Jose David Badia, Barbara Bosio, Pilar Campíns-Falcó, Carmen Molíns-Legua, Francesc Hernandez, Lorenzo Sanjuan-Navarro, Plàcid Madramany, José Morán, José Castro, Francisco Javier Sanchis, José Domingo Martínez, Frank Hiddink, Amparo Ribes-Greus, Elisabetta Arato. Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project. Sustainability. 2018; 10 (9):3007.
Chicago/Turabian StyleCristina Moliner; Roberto Teruel-Juanes; Carmem T. Primaz; Jose David Badia; Barbara Bosio; Pilar Campíns-Falcó; Carmen Molíns-Legua; Francesc Hernandez; Lorenzo Sanjuan-Navarro; Plàcid Madramany; José Morán; José Castro; Francisco Javier Sanchis; José Domingo Martínez; Frank Hiddink; Amparo Ribes-Greus; Elisabetta Arato. 2018. "Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project." Sustainability 10, no. 9: 3007.