3 documents found, page 1 of 1
Granulated biomass fly ash coupled with Fenton process for pulp and paper waste...
Ribeiro, João Peres; Cruz, Nuno C.; Neves, Márcia C.; Rodrigues, Sónia M.; Tarelho, Luís A. C.; Nunes, Maria IsabelThe work describes the combination of granulated biomass fly ash (GBFA) with Fenton process to enhance the removal of adsorbable organic halides (AOX) from pulp bleaching wastewater. At optimal operating conditions, wastewater's chemical and biochemical oxygen demand (COD and BOD5, respectively) and colour were also quantified, and operating cost of treatment assessed. For the first time, raw pulp bleaching was...
Dissolution of Ag nanoparticles in agricultural soils and effects on soil exoen...
Cruz, Nuno C.; Farto, Márcia; Mourinha, Clarisse; Tavares, Daniela; Duarte, Armando C.; Trindade, Tito; Pereira, Eduarda; Romkens, Paul F.A.M.To assess environmental risks related to the mobility and toxicity of AgNPs, the chemical availability of AgNPs and polyvinylpyrrolidone-coated AgNPs (PVP-AgNPs) in three agricultural soils was quantified in a pot experiment. Porewater collection and soil extractions with 0.01 M CaCl2, 0.4 M Glycine (pH 1.5) and 0.05 M NH4-EDTA were performed. The effect on soil exoenzyme activities was also assessed. Porewater...
Critical review of key variables affecting potential recycling applications of ...
Cruz, Nuno C.; Silva, Flávio C.; Tarelho, Luís A. C.; Rodrigues, Sónia M.Growing quantities of biomass ash are produced worldwide due to an increasing use of biomass for heat and electricity generation. Physical-chemical properties and elemental composition of ash at industrial biomass thermal power plants show significant variations. Experimental methods to characterize ashes are time-consuming and difficult to implement on a routine basis, posing severe limitations to the selectio...