Estudio de la formación de contaminantes fotoquímicos mediante la modelación matemática y sus efectos en la salud en el Valle de Aburra

IP 1210-13-234-98PONENCIA(S) EN CONGRESO: Numeral investigation of meteorologicalconditions leading to elevated ozone;concentrations in Medellin, Colombia / P. Sahm ... [et al.]. --En: International Conference on Urban Air;Quality and Saturn Workshop (3, 5 : 2001 Mar. 19-23 : Loutraki,Grecia). -- [s.l. : s.n.], 2001. -- p. ; 28;cm. -- Emission inventory in Medellin (Colombia) city : anaproximation /M.V. Toro ... [et al.]. -- En:;contaminantes atmosfericos en la ciudad de Medellin mediante factores de emision Corinar / M. Victoria Toro G.;... [et al.] -- En: Acodal -- Vol. 191 (2002); p. -- ISSN120798 -- Diagnostico de la calidad del aire en el;ancon sur del valle de Aburra / Maria Victoria Toro ... [et al.]'-- en: Contaminacion ambiental. -- Vol. 17,;no. 30-31 (2000); p. 93-103. -- ISSN 01200674.;International Conference on Urban Air Quality and Saturn Workshop (3, 5 :2001 Mar. 19-23 : Loutraki, Grecia).; [s.l. : s.n.], 2001. -- p. ; 28 cm. -- ARTICULO(S) EN REVISTA: Calculode la emision vehicular d

Sulphur deposition on the Italian area: a trajectory model study

2nonenoneCALORI G.; FINZI G.Calori, G.; Finzi, Giovann

Harmful algal blooms mitigation using clay/soil/sand modified with xanthan and calcium hydroxide

A method was studied for marine harmful algal blooms (HABs) mitigation using clay, soil, or sand modified with xanthan and calcium hydroxide. Results showed that xanthan could trap and wrap Amphidinium carterae cells via bridging and netting interactions due to its superior salt compatibility in seawater. The maximum cell removal efficiency was 55% when xanthan was used alone. The removal effect of xanthan was enhanced by the addition of appropriate calcium hydroxide that decreased the repulsive interaction between anionic xanthan and negatively charged algal cells. Three kinds of minerals (clays, soils, and sands) were ineffective in removing algal cells before treatment. When xanthan and calcium hydroxide were used together as modifiers, the removal efficiency increased to 83-89% within 30 min using 300 mg L-1 clays, soils, or sands modified with 20 mg L-1 xanthan and 100 mg L-1 calcium hydroxide. After several hours, 95-98% cell removal was achieved and there was no significant difference in the removal efficiencies among clays, soils, and sands after being modified with xanthan and calcium hydroxide. Thus, the method would provide an alternative modification approach to suppress and mitigate HABs using local soils/sands and polymers in marine systems