2026-06-08T02:39:17Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/443302024-07-04T07:41:32Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Hermosilla Redondo, María Daphne author Ordóñez, Ruth author Blanco, Laura author Fuente González, Elena de la author Blanco Suárez, María Ángeles author 2012 Coagulation is presented as an efficient alternative to reduce the silica content in effluents from recovered-paper mills that are intended to be recycled by a final reverse-osmosis (RO) step. Coagulation pretreatment by several polyaluminum chlorides (PACls) or FeCl3 was optimized prior to the RO process. PACls with low alumina content and high basicity achieved almost a 100 % removal of silica at pH 10.5. A good reduction of the silica content was attained without regulating the pH by adding one of these PACls. Silica removal was related to the structure of the produced clots in which cylindrical particles produced higher silica removal. All coagulants removed more than 50 % of the chemical oxygen demand (COD). 1521-4125 10.1002/ceat.201100527 https://hdl.handle.net/20.500.14352/44330 http://doi.org/10.1002/ceat.201100527 pH and Particle Structure Effects on Silica Removal by Coagulation