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The influence of the activated carbon post-treatment on the phenolic
Cansado, Isabel P. P.; Mourão, Paulo A. M.; Falcão, Ana I.; Ribeiro Carrott, M . Manuela L.; Carrott, Peter J. M.The aim of this research was to investigate how post treatment modification, such as those with sodium hydroxide or urea, can influence the capacity of activated carbon (AC) for phenolic compounds removal from liquid media. The ACs modification was performed using urea impregnation followed by pyrolysis at high temperature. With all ACs used, this treatment induced a pore volume increase, a mean pore size broad...
Pathway Weathering in Granitoid Rocks from Central Region of Angola: Geochemica...
Duarte, Isabel M. R.; Mirão, José A. P.; Rocha, Fernando J. T.; Bonito, Fernando A. B.; Queta, Felisberto M.; Falcão, WinnieThe Central Region of Angola is characterized by the abundance of granitoid rocks, whose weathering “in situ” originated the so-called residual soils. The textural, geochemical and mineralogical properties of these soils depend not only on the chemical composition of parent rock, but mainly on the local climatic and geomorphological characteristics. In the study area, sampling sites were selected, which extend ...
Alteração de Rochas Granitóides em Angola.
Duarte, Isabel Maria Ratola; Mirão, José A. P.; Rocha, Fernando J. T.; Bonito, Fernando A. B.; Queta, Felisberto M.; Falcão, WinnieA Região Central de Angola caracteriza-se pela abundância de rochas granitóides, cuja alteração “in-situ” originou os denominados solos residuais. As propriedades texturais, geoquímicas e mineralógicas destes solos dependem não só da composição química da rocha mãe, mas principalmente das características geomorfológicas e climatéricas locais. Na região em estudo, seleccionaram-se locais de amostragem, que se es...
Giant recurrent retroperitoneal liposarcoma initially presenting as inguinal he...
Leão, P; Vilaça, S; Oliveira, M; Falcão, JINTRODUCTION: Liposarcomas comprise around 15% of soft tissue tumors. These tumors of mesodermal origin arise as single tumors, present one histologic type and diverse locations (including the retroperitoneum). Diagnosis of liposarcomas of retroperitoneum is difficult because of this unspecific presentation and in 50-100% of the cases there is recurrence from residual tissue. PRESENTATION OF CASE: An 86 year o...
Giant recurrent retroperitoneal liposarcoma initially presenting as inguinal he...
Leão, P; Vilaça, S; Oliveira, M; Falcão, JINTRODUCTION: Liposarcomas comprise around 15% of soft tissue tumors. These tumors of mesodermal origin arise as single tumors, present one histologic type and diverse locations (including the retroperitoneum). Diagnosis of liposarcomas of retroperitoneum is difficult because of this unspecific presentation and in 50-100% of the cases there is recurrence from residual tissue. PRESENTATION OF CASE: An 86 year o...
Activated Carbon Post Treatment - Influence on Phenolic Compounds Removal
Cansado, Isabel P. P.; Mourão, Paulo A. M.; Falcão, Ana I.; Ribeiro Carrott, M. Manuela; Carrott, Peter J. M.● AC preparation from different precursors and their modification / optimisation with sodium hydroxide and urea to improve the adsorption capacities for phenolic compounds from the liquid phase. ● Comparative study of the influence of textural and chemical parameters of AC on the liquid phase adsorption.
Application of Activated Carbons Modified with NaOH at High Temperature for Phe...
Cansado, Isabel P. P.; Mourão, Paulo A. M.; Falcão, Ana I.; Ribeiro Carrott, M. Manuela; Carrott, Peter J. P.AC preparation from different precursors and their modification / optimisation with sodium hydroxide to improve the adsorption capacities for phenolic compounds from the liquid phase. ● Comparative study of the influence of textural and chemical parameters of AC on the liquid phase adsorption.
Modification and Optimization of Activated Carbons for Phenolic
Cansado, Isabel P. P.; Mourão, Paulo A. M.; Falcão, Ana I.; Ribeiro Carrott, M. Manuela; Carrott, Peter J. M.Phenolic compounds are generally considered to be one of the important organic pollutants discharged into the environment causing unpleasant taste and odour of drinking water [1,2]. So, removal of phenolics compounds from industrial effluents is required before sewage disposal. The development of inexpensive adsorbents from industrial wastes for the treatment of wastewaters is an important area in environmental...
Modification and Optimization of Activated Carbons for Phenolic Compounds removals
Cansado, Isabel P. P.; Mourão, Paulo A. M.; Falcão, Ana I.; Ribeiro Carrott, M. Manuela; Carrott, Peter J. M.Phenols are generally considered to be one of the important organic pollutants discharged into the environment causing unpleasant taste and odour of drinking water. Development of inexpensive adsorbents from industrial wastes for the treatment of wastewaters is an important area in environmental sciences. For the phenolic compounds removal, it appears that the pH of the solution, the real surface area of the so...
Polymeric biophenols in olive mill wastewaters
Cardoso, Susana M.; Falcão, Soraia; Peres, António M.; Domingues, M.R.M.Olive mill wastewater (OMW), the effluents generated in the olive oil extraction industry operating in three-phases mode, are phytotoxic mainly due to its high phenolic content [1]. On the other hand, attending to the potential healthbenefits of some of their phenolic compounds, OMW are now regarded as a potent source of biophenols for food and pharmaceutical industries. An important portion of the OMW biopheno...
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