Biosorpsi Pb (II) pada jamur Trichoderma asperrellum TNJ-63

Desi Heltina (Jurusan Teknik Kimia, Fakultas Teknik, Universitas Riau Kampus Bina Widya Km 12,5 Simpang Panam, Pekanbaru, Riau)
Evelyn Evelyn (Jurusan Teknik Kimia, Fakultas Teknik, Universitas Riau Kampus Bina Widya Km 12,5 Simpang Panam, Pekanbaru, Riau)
Renny Indriani (Jurusan Teknik Kimia, Fakultas Teknik, Universitas Riau Kampus Bina Widya Km 12,5 Simpang Panam, Pekanbaru, Riau)

Jurnal Rekayasa Proses
Vol 3 No 1 (2009): Volume 3, Number 1, 2009

Heavy metal Pb2+ is a highly toxic substance and is very dangerous for living creatures. Biosorption with fungi is one of the abatement methods to reduce the metal contaminant in environment. The present study aimed at determining the maximum biosorption capacity and the equilibrium model of Pb2+ biosorption by Trichoderma asperellum TNJ-63. Some Trichoderma asperellum TNJ-63 varied in amount were put into an erlenmeyer flask containing a solution of Pb2+ with an initial concentration of 100 ppm at room temperature. Variation of stirring speeds (80, 130 and 180 rpm) was also carried out to study its effect on the time required to reach equilibrium. The result showed that Pb2+ could be effectively adsorbed by Trichoderma asperellum TNJ-63 as the biosorbent and its biosorption could reach its maximum by as much as 98.24% (w/w). Calculation result showed that the mechanism of Pb2+ biosorption on Trichoderma asperellum TNJ-63 followed Freundlich isotherm model with an average error of 0.098%.