CN

Removal of nickel and cadmium from battery waste by a chemical method using ferric sulphate.

Removal of nickel and cadmium from battery waste by a chemical method using ferric sulphate.

Environmental technology (2014-04-08)

Umesh U Jadhav, Hong Hocheng

摘要

The removal of nickel (Ni) and cadmium (Cd) from spent batteries was studied by the chemical method. A novel leaching system using ferric sulphate hydrate was introduced to dissolve heavy metals in batteries. Ni-Cd batteries are classified as hazardous waste because Ni and Cd are suspected carcinogens. More efficient technologies are required to recover metals from spent batteries to minimize capital outlay, environmental impact and to respond to increased demand. The results obtained demonstrate that optimal conditions, including pH, concentration of ferric sulphate, shaking speed and temperature for the metal removal, were 2.5, 60 g/L, 150 rpm and 30 degrees C, respectively. More than 88 (+/- 0.9) and 84 (+/- 2.8)% of nickel and cadmium were recovered, respectively. These results suggest that ferric ion oxidized Ni and Cd present in battery waste. This novel process provides a possibility for recycling waste Ni-Cd batteries in a large industrial scale.

材料

货号

品牌

产品描述

Sigma-Aldrich

硫酸铁(III) 水合物, 97%

Sigma-Aldrich

镉, powder, −100 mesh, 99.5% trace metals basis

Sigma-Aldrich

镉, granular, ≥99%, 5-20 mesh

Sigma-Aldrich

镉, granular, 30-80 mesh, ≥99%

Sigma-Aldrich

硫酸铁(III) 水合物, suitable for plant cell culture, BioReagent

Sigma-Aldrich

Raney^®-镍, W.R. Grace and Co. Raney^® 2400, slurry, in H₂O, active catalyst

Sigma-Aldrich

镍, wire, diam. 0.25 mm, ≥99.9%

Sigma-Aldrich

镍, powder, <1 μm, 99.8% trace metals basis

Sigma-Aldrich

镍, wire, diam. 0.5 mm, ≥99.9% trace metals basis

Sigma-Aldrich

镍, foil, thickness 0.25 mm, 99.995% trace metals basis

镍, pellets, 100g, max. size 10mm, 99.999%

Sigma-Aldrich

镍, wire, diam. 0.5 mm, ≥99.99% trace metals basis

Sigma-Aldrich

镍, foil, thickness 0.1 mm, 99.98% trace metals basis

Sigma-Aldrich

镍, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.95% trace metals basis

Sigma-Aldrich

镉, shot, 3 mm, 99.999% trace metals basis

镍, foil, 100x100mm, thickness 0.25mm, annealed, 99%

镍, pellets, 20g, max. size 5mm, 99.99+%

镍, foil, 100x100mm, thickness 1.6mm, 99%

镍, foil, 100x100mm, thickness 0.1mm, annealed, 99%

镍, rod, 100mm, diameter 1.5mm, 99.99+%

镍, pellets, 100g, max. size 10mm, 99.99+%

镍, mesh, 130x130mm, nominal aperture 0.34mm, thickness 0.025mm, wire diameter 0.041mm, 70 wires/inch, open area 80%, electro-formed mesh, 99.9%

镍, foil, 100x100mm, thickness 1.0mm, annealed, 99.98%

镍, foil, 50x50mm, thickness 1.6mm, 99%

镉, foil, 10mm disks, thickness 1.0mm, as rolled, 100%

镍, rod, 50mm, diameter 5.0mm, 99.99+%

镍, sphere, 100pcs, diameter 3.0mm, precision sphere grade 200, 99%

镉, rod, 100mm, diameter 10.0mm, 99.999%

镍, foil, 2m coil, thickness 0.025mm, coil width 600mm, as rolled, 99%

镍, mesh, 30x30mm, nominal aperture 0.34mm, thickness 0.025mm, wire diameter 0.041mm, 70 wires/inch, open area 80%, electro-formed mesh, 99.9%