Alternative Method for the Treatment of Hydrometallurgical Arsenic–Calcium Residues: The Immobilization of Arsenic as Scorodite
Xu Ma, Zidan Yuan, Guoqing Zhang, Jiaxi Zhang, Xin Wang, Shaofeng Wang, Yongfeng Jia
Abstract
. The scorodite produced from both ACRs displayed good As stability at pH 4.95 (0.9 and 0.5 mg/L) via the toxicity characteristic leaching procedure (TCLP) method and at pH 3-7 (0.4-3.0 mg/L) via a 15 day short-term stability test.
Topics & Concepts
ArsenicGypsumSulfuric acidLeaching (pedology)Toxicity characteristic leaching procedureDissolutionChemistryLimeHazardous wasteNeutralizationNuclear chemistryMetallurgyWaste managementEnvironmental chemistryInorganic chemistryMaterials scienceEnvironmental scienceHeavy metalsOrganic chemistryImmunologyBiologySoil waterSoil scienceEngineeringAntibodyArsenic contamination and mitigationMine drainage and remediation techniquesFluoride Effects and Removal