The Malaysian Journal of Analytical Sciences Vol 15
No 2 (2011): 252 – 257
COMPETITIVE METAL SORPTION AND DESORPTION ONTO Kappaphycus Alvarezii, SEAWEED WASTE
BIOMASS
(Persaingan Penjerapan
dan Nyah-Penjerapan Logam Berat ke atas Sisa Rumpai Laut Kappaphycus alvarezii)
Kang Oon Lee1,
Nazaruddin Ramli1*, Mamot Said1, Musa Ahmad1,
Suhaimi Md Yasir2, Arbakariya Ariff3
1School of Chemical Sciences and Food Technology,
Faculty of Science and Technology,
Universiti Kebangsaan Malaysia,
43600 UKM Bangi, Selangor,
Malaysia;
2School of Sciences and Technology,
Universiti Malaysia Sabah, Sabah, Malaysia;
3Faculty of Biotechnology and Biomolecular Science,
Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
*Corresponding author: naza@ukm.my
Abstract
Competitive
metal sorption and desorption onto Kappaphycus
alvarezii waste biomass were investigated. Metal sorption capacities were
0.82 mg Cr(III)/g, 0.73 mg Ni(II)/g, 0.67 mg Cd(II)/g, 0.65 mg Cu(II)/g and
0.64 mg Zn(II)/g in multi metal system. Whereas, desorption efficiencies were
66.08%, 71.50% and 80.44% using 0.1M HNO3, 0.1M HCl and 0.1M H2SO4,
respectively. The metal sorption sequence were Cr(III) > Ni(II) > Cd(II)
> Cu(II) > Zn(II), while metal desorption sequence were Cd(II) >
Zn(II) > Cu(II) > Ni(II) > Cr(III). Fourier transformed infrared
spectroscopy (FTIR) technique was used to characterize the seaweed waste
biomass. FTIR analysis shown that carbonyl (–C–O) and nitrile (–C≡N) groups
interact with the metal ions. The experiments result revealed that Kappaphycus alvarezii waste biomass
represent an attractive candidate to remove multi metal ions.
Keywords: Sorption, Desorption, Kappaphycus alvarezii
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