Removal of Cd<sup>2+</sup>, Cr<sup>3+</sup>, Cu<sup>2+</sup>, Hg<sup>2+</sup>, Pb<sup>2+</sup> and Zn<sup>2+</sup> cations and AsO<sub>4</sub><sup>3-</sup> anions from aqueous solutions by mixed clay from Tundulu in Malawi and characterisation of the clay
Sajidu, SMI; Persson, Ingmar; Masamba, WRL; Henry, EMT; Kayambazinthu, D