Efficiency of Phaseolus vulgaris Pod and Citrus sinensis Peel in Arsenic Biosorption from Moche River Water

Authors

Gutiérrez de la Cruz, Annie Jocelyn

Ibañez Arteaga, Yanela Rosibel

Alva-Diaz, Luis Enrique

Effio-Quezada, Wilberto

Abstract

This research determined the efficiency of the pod of Phaseolus vulgaris and the shell of Citrus sinensis in the biosorption of arsenic from the water of the Moche river, using volumetric, gravimetric and spectrophotometric methods. For this, 400 ml of water from the Moche River was used, at an initial concentration (Ci) of 7,058 mg/L of As, with 5, 7 and 10 g of each biosorbent, using the jar test equipment at a speed of agitation of 80 and 100 rpm, for a contact time of 120 and 180 min. Obtaining the highest percentage of biosorption for the pod of Phaseolus Vulgaris is 85% with a final concentration (Cf) of As of 1.058 mg/L, and the highest percentage for the shell of Citrus sinensis is 88.96% with a final concentration (Cf) of As of 0.779 mg/L, both with optimal conditions of 120 min, 80 rpm and 5g. Concluding that the shell of Citrus sinensis is the most efficient in the biosorption of arsenic with 88.96%, likewise, the pod of Phaseolus vulgaris is efficient by 85%, evidencing that both biomasses have efficiency to biosorb more than 50% of arsenic from the Moche river water.