Malaysian
Journal of Analytical Sciences Vol 22 No 1 (2018): 128 - 135
DOI:
10.17576/mjas-2018-2201-16
SEPARATION
OF Pb(II) FROM WASTEWATER USING UNTREATED COCONUT (Cocos nucifera) FROND POWDER
(Pengasingan Pb(II) daripada Air Buangan Menggunakan
Serbuk Pelepah Kelapa (Cocos nucifera)
yang Tidak Dirawat
Nur Fatin Adlina
Mohd Fouzi, Mardhiah Ismail*, Zurhana Mat Hussin, Sarah Laila Mohd Jan
Faculty
of Applied Sciences,
Universiti
Teknologi MARA Pahang, 26400 Bandar Tun Abdul Razak Jengka, Pahang, Malaysia
*Corresponding author: marismael@pahang.uitm.edu.my
Received: 4
December 2016; Accepted: 1 December 2017
Abstract
The adsorption of Pb(II) ion from
wastewater by coconut frond powder was evaluated in the batch adsorption
process. Characteristic of the coconut frond powder (CFP) was determined by
performing a pHzpc analysis and also infra-red spectroscopy analysis
for the investigation of the functional group on CFP surface. The batch
adsorption study was carried out using five parameters including the effect of
pH, the effect of adsorbent dosage, the effect of initial concentration and
contact time, the kinetic and isotherm study. The optimum dosage used in this
study was 0.0.4 g while the optimum pH for the adsorption of lead ions was pH
4. The adsorption capacities depended on lead concentration and contact time. It
required a relatively short period of time to reach an equilibrium which is
less than 60 minutes. Two kinetics models; pseudo first order and pseudo second
order were used to analyze the lead adsorption process. Pseudo second order
model was found to fit well enough the experimental data compared to pseudo
first order.
Keywords: adsorption, Cocos nucifera, kinetic, lead
Abstrak
Penjerapan
Pb(II) ion daripada sisa air oleh serbuk pelepah kelapa telah dinilai
menggunakan proses penjerapan secara berkelompok. Ciri-ciri serbuk pelepah
kelapa (CFP) telah ditentukan dengan menjalankan analisa pHzpc dan
juga spektroskopi infra-merah untuk mengkaji kumpulan-kumpulan berfungsi pada
permukaan CFP. Kajian penjerapan berkelompok telah dijalankan dengan menilai
lima parameter termasuk kesan pH, kesan dos penjerap, kesan kepekatan awal dan
masa penjerapan, kajian kinetic dan kajian isoterma. Dos penjerap yang optimum
diperolehi adalah 0.04 g sementara pH optima adalah pH 4. Kapasiti penjerapan
bergantung kepada kepekatan larutan plumbum dan masa tindak balas. Proses
penjerapan memerlukan masa yang pendek untuk mencapai keseimbangan iaitu kurang
daripada 60 minit. Dua model kinetik; pseudo peringkat pertama dan pseudo
peringkat kedua telah digunakan untuk menilai proses penjerapan plumbum. Model
pseudo peringkat kedua didapati lebih sesuai untuk membincangkan data kinetic
berbanding model pseudo peringkat pertama.
Kata kunci: penjerapan, Cocos
nucifera, kinetik, plumbum
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