%0 Journal Article %1 WOS:000343441500001 %A dos Santos, Ricardo Pires %A Martins, Jorge %A Gadelha, Carlos %A Cavada, Benildo %A Albertini, Alessandro Victor %A Arruda, Francisco %A Vasconcelos, Mayron %A Teixeira, Edson %A Alves, Francisca %A Filho, Jose Lima %A Freire, Valder %C 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA %D 2014 %I HINDAWI PUBLISHING CORPORATION %J SCIENTIFIC WORLD JOURNAL %K imported %R 10.1155/2014/154651 %T Coal Fly Ash Ceramics: Preparation, Characterization, and Use in the Hydrolysis of Sucrose %X Coal ash is a byproduct of mineral coal combustion in thermal power plants. This residue is responsible for many environmental problems because it pollutes soil, water, and air. Thus, it is important to find ways to reuse it. In this study, coal fly ash, obtained from the Presidente Medici Thermal Power Plant, was utilized in the preparation of ceramic supports for the immobilization of the enzyme invertase and subsequent hydrolysis of sucrose. Coal fly ash supports were prepared at several compaction pressures (63.66-318.30MPa) and sintered at 1200 degrees C for 4 h. Mineralogical composition (by X-ray diffraction) and surface area were studied. The ceramic prepared with 318.30MPa presented the highest surface area (35 m(2)/g) and amount of immobilized enzyme per g of support (76.6mg/g). In assays involving sucrose inversion, it showed a high degree of hydrolysis (around 81%) even after nine reuses and 30 days' storage. Therefore, coal fly ash ceramics were demonstrated to be a promising biotechnological alternative as an immobilization support for the hydrolysis of sucrose.

@article{WOS:000343441500001, abstract = {Coal ash is a byproduct of mineral coal combustion in thermal power plants. This residue is responsible for many environmental problems because it pollutes soil, water, and air. Thus, it is important to find ways to reuse it. In this study, coal fly ash, obtained from the Presidente Medici Thermal Power Plant, was utilized in the preparation of ceramic supports for the immobilization of the enzyme invertase and subsequent hydrolysis of sucrose. Coal fly ash supports were prepared at several compaction pressures (63.66-318.30MPa) and sintered at 1200 degrees C for 4 h. Mineralogical composition (by X-ray diffraction) and surface area were studied. The ceramic prepared with 318.30MPa presented the highest surface area (35 m(2)/g) and amount of immobilized enzyme per g of support (76.6mg/g). In assays involving sucrose inversion, it showed a high degree of hydrolysis (around 81%) even after nine reuses and 30 days' storage. Therefore, coal fly ash ceramics were demonstrated to be a promising biotechnological alternative as an immobilization support for the hydrolysis of sucrose.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA}, author = {dos Santos, Ricardo Pires and Martins, Jorge and Gadelha, Carlos and Cavada, Benildo and Albertini, Alessandro Victor and Arruda, Francisco and Vasconcelos, Mayron and Teixeira, Edson and Alves, Francisca and Filho, Jose Lima and Freire, Valder}, biburl = {https://www.bibsonomy.org/bibtex/2e2b264e0fbf9c9b18e6d79b55a613d8e/ppgfis_ufc_br}, doi = {10.1155/2014/154651}, interhash = {f43cc545fa280ff4e51770ea33c3ffa5}, intrahash = {e2b264e0fbf9c9b18e6d79b55a613d8e}, issn = {1537-744X}, journal = {SCIENTIFIC WORLD JOURNAL}, keywords = {imported}, publisher = {HINDAWI PUBLISHING CORPORATION}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Coal Fly Ash Ceramics: Preparation, Characterization, and Use in the Hydrolysis of Sucrose}, tppubtype = {article}, year = 2014 }