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

PMID24701923

ABSTRACT

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.

MATERIALS

Product Number

Brand

Product Description

GF88726168

Nickel, foil, light tested, 25x25mm, thickness 0.009mm, 99.95%

GF45284081

Nickel, foil, not light tested, 100x100mm, thickness 0.004mm, hard, 99%

357553

Sigma-Aldrich

Nickel, foil, thickness 0.5 mm, 99.98% trace metals basis

577995

Sigma-Aldrich

Nickel, nanopowder, <100 nm avg. part. size, ≥99% trace metals basis

F0638

Sigma-Aldrich

Iron(III) sulfate hydrate, suitable for plant cell culture, BioReagent

357588

Sigma-Aldrich

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

357626

Sigma-Aldrich

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

267074

Sigma-Aldrich

Nickel, rod, diam. 6.35 mm, ≥99.99% trace metals basis

GF83416798

Nickel, wire reel, 10m, diameter 0.01mm, as drawn, 99.98%

GF98554078

Nickel, tube, 500mm, outside diameter 3.25mm, inside diameter 3.05mm, wall thickness 0.1mm, hard, 99.5%

GF91622853

Nickel, foil, 4mm disks, thickness 0.003mm, 99.95%

GF84641957

Nickel, foil, 50x50mm, thickness 3.2mm, as rolled, 99.99+%

GF35123486

Nickel, foil, 150x150mm, thickness 0.20mm, annealed, 99%

GF03846102

Nickel, foil, 25x25mm, thickness 0.5mm, annealed, 99.98%

GF55371832

Nickel, mesh, 65x65mm, nominal aperture 0.34mm, thickness 0.025mm, wire diameter 0.041mm, 70 wires/inch, open area 80%, electro-formed mesh, 99.9%

GF54065077

Nickel, foil, 10m coil, thickness 0.05mm, coil width 2mm, annealed, 99%

GF34239887

Nickel, foil, 0.5m coil, thickness 0.004mm, hard, 99%

GF35355315

Nickel, wire reel, 0.1m, diameter 0.75mm, as drawn, 99.99+%

GF03677665

Nickel, foil, 2m coil, thickness 0.15mm, annealed, 99%

GF22406745

Nickel, foil, 50x50mm, thickness 0.30mm, as rolled, 99.98%

GF18000155

Nickel, foil, 4mm disks, thickness 0.009mm, 99.95%

GF60700889

Nickel, foil, 25x25mm, thickness 0.125mm, annealed, 99.98%

GF33164872

Nickel, foil, 0.5m coil, thickness 0.125mm, coil width 50mm, annealed, 99%

GF20973517

Nickel, foil, 0.5m coil, thickness 0.0125mm, 99.9%

GF72690778

Nickel, foil, 150x150mm, thickness 1.0mm, annealed, 99%

GF50542433

Nickel, foil, 0.5m coil, thickness 0.5mm, annealed, 99.98%

GF43379253

Nickel, foil, 25x25mm, thickness 0.30mm, as rolled, 99.98%

GF28849371

Nickel, foil, 0.5m coil, thickness 0.05mm, 99.9%

GF53958954

Nickel, wire reel, 10m, diameter 0.025mm, as drawn, 99.98%

GF26937838

Nickel, foil, 0.2m coil, thickness 0.005mm, as rolled, 99.9%