Biosorption of total heavy metals from wastewater from the la Rinconada mine with Waraqqo biomass (echinopsis maximiliana) 2022 – 2023

Abstract

The present study deals with biosorption of total heavy metals from wastewater from the Rinconada mine, the wastewater is discharged directly into runoff and rivers; For this purpose, the objective of the study was to evaluate the level of initial concentration and final concentration of total heavy metals in wastewater before and after the use of Waraqqo biomass (Echinopsis maximiliana), as a hypothesis the efficiency of Waraqqo biomass was proposed (Echinopsis maximiliana) during the biosorption of total heavy metals has a “High” performance. The study was carried out during the period 2022 – 2023; The sample was taken from residual water from the Lunar de Oro lagoon. The method to follow, 0.3 grams of biosorbent was weighed and activated in two stages with acidic hydrolysis solution of 0.3N HNO3 and alkaline with 0.9M NaOH, then a volume of 150 mL of residual water sample was added. It was adjusted to pH 10.0 and 12.10 and in a time of 60 minutes. As a result, it was possible to remove: Al 85.97% (19.1 to 2.68 mg/L), Fe 99.51% (11.6 to 0.06 mg/L), Mn 97.49%. (6.7095 at 0.17 mg/L), Zn 99.85% (2.04 at 0.0031 mg/L), As a 83.24% (0.179 to 0.03 mg/L), Pb 96.84% (0.0822 to 0.0026 mg/L) and Hg 95.40% (0.0087 to 0.0004 mg/L). The use of Waraqqo biomass (Echinopsis maximiliana) is efficient in the biosorption of total heavy metals from mine wastewater.