Leaching of Arsenic from high Arsenic loaded iron oxide impregnated brick sands (IOI CBCM) was investigated using common household chemicals like common salt and soda ash, the industrial chemicals caustic soda and the phosphates used as fertilizers such as potassium hydrogen phosphate and TSP. Leaching by ordinary ground water was also investigated on the arsenic saturated iron oxide impregnate...

Sedimentation of ultrafine silica particles that exist in acid leaching pulp and their separation from Pregnant Leach Solution largely determines the efficiency a hydrometallurgical process utilizing copper oxide ore. Thickener on larger scale can allow longer sedimentation, generating low overflow turbidity but high economic input. In this paper, flocculation behavior quartz sulfuric solution ...

This study was conducted to determine the effectiveness of three different adsorbents for adsorption gold from a real cyanide leach liquor. An activated carbon (NORIT GAC 1240), strong base (Purogold A194), and weak S992) resins were tested as adsorbents. The pregnant solution (PLS) derived leaching (1.5 g/L NaCN, 25% w/w solids ratio, 1.5 L/min air flow rate, pH 10.5 – 11, 24 h) roasted copper...

Abstract Brass melting slag is a valuable secondary resource for the recovery of copper and zinc. The hydrometallurgical process this material challenge, because its limited dissolution in sulfuric acid. present study aimed at studying combined pyro-hydrometallurgical treatment processes involving high temperature oxidation acid leaching to industrial brass recover effect on performance efficie...

To protect natural resources and avoid environmental pollution, an effective method is proposed to recover tin (Sn) from waste printed circuit boards (WPCBs). In order realize the efficient recovery of Sn, it necessary study effects experimental parameters on Sn leaching understand kinetics processes. The statistical mathematical technique (response surface methodology (RSM)) was used interacti...

Abstract Lithium battery cathodes contain lithium, cobalt, nickel, and manganese. Recycling of spent lithium batteries aims to recover these elements for re-use. Liberation cathode materials from other metals in the such as aluminium, copper, iron, is essential obtain a good leaching efficiency recovery valuable end-of-life batteries. This study investigates behaviour 18650 during H 2 SO 4 solu...

This method was developed to improve sensitivity and eliminate time consuming, evaporative pre-concentration in AOAC Method 973.82 and American Society for Testing and Materials method C738 for testing foodware. The method was developed using leach solutions obtained by leaching 9 differently decorated ceramic vessels with 4% acetic acid for 24 h at room temperature. Lead and cadmium concentrat...

Leaching occurs in metals recovery, in contaminated soil washing, and in many natural processes, such as fertilizer dissolution and rock weathering. This paper presents a model developed to simulate the transient evolution of the dissolved chemical species in the heap and column isothermal leaching processes. In this model, the solid bed is numerically divided into plane layers; the recovery of...