Malaysian Journal of Analytical Sciences Vol 21 No 5 (2017): 1101 - 1110

DOI: https://doi.org/10.17576/mjas-2017-2105-12

 

 

 

RESPONSE SURFACE METHODOLOGY OPTIMIZATION OF OIL REMOVAL USING BANANA PEEL AS BIOSORBENT

 

(Pengoptimuman Kaedah Gerak Balas Permukaan Untuk Penyingkiran Minyak Menggunakan Kulit Pisang sebagai Penjerap-Bio)

 

Najaa Syuhada Mohamad Thani1, Rozidaini Mohd Ghazi1*, Norhisyam Ismail2

 

1Faculty of Earth Science,

Universiti Malaysia Kelantan Jeli Campus, 17600 Jeli, Kelantan, Malaysia

2Department of Chemistry, Faculty of Science,

Uni versiti Teknologi Malaysia, 81310, Skudai Johor Bharu, Johor, Malaysia

 

*Corresponding author:  rozidaini@umk.edu.my

 

 

Received: 21 February 2017; Accepted: 24 August 2017

 

 

Abstract

Improper waste management of oil causes environmental pollution particularly water pollution. Conventional method in treating oil contaminants are expensive and have low removal efficiency, hence the use of natural adsorbent is suggested because of its reliability and affordability. This study aimed to use banana peel as a biosorbent for oil removal and the application of response surface methodology to identify the optimum conditions of oil removal. The adsorptive capacity of household wastes derived from banana peel towards oil were studied by using different parameters such as oil concentration, adsorbent dosage and contact time. Maximum oil adsorption of 98.86% was achieved using banana peel. The optimum conditions for oil removal were found at a dosage of 4.94 g, for 10.29 hours contact time and the initial oil concentration as high as 8.74%. The rate of oil adsorption was mathematically described as a function of experimental parameters and was modelled through response surface methodology via Box-Behnken design. The results showed that the responses of oil adsorption were significantly affected by the quadratic term of oil concentration, adsorbent dosage and contact time. The statistical analysis was performed by ANOVA which indicated good correlation of experimental parameters.

 

Keywords:  banana peel, oil removal, response surface methodology

 

Abstrak

Pengurusan sisa minyak yang tidak teratur menyebabkan pencemaran alam sekitar terutamanya pencemaran air. Kaedah konvensional untuk merawat pencemaran minyak adalah mahal dan tahap penyingkiran minyaknya adalah rendah, maka penggunaan penjerap semulajadi adalah dicadangkan kerana kebolehannya menyerap minyak dan lebih menjimatkan. Matlamat kajian ini adalah untuk menggunakan kulit pisang sebagai biopenjerap untuk penyingkiran minyak dan aplikasi kaedah gerak balas permukaan untuk mengenal pasti keadaan optimum kapasiti penyingkiran minyak. Kapasiti penjerapan daripada sisa rumah yang diambil daripada kulit pisang terhadap minyak telah dikaji dengan menggunakan parameter yang berbeza seperti kepekatan minyak, kuantiti penjerap dan tempoh masa. Penjerapan minyak secara maksimum, pada kadar 98.86% telah dicapai oleh kulit pisang. Keadaan optimum untuk menyingkirkan minyak adalah pada kadar 4.94 g, 10.29 jam dan kepekatan minyak sebanyak 8.74%. Kadar penjerapan minyak telah diterangkan secara matematik dalam fungsi parameter eksperimen dan telah dimodelkan melalui reka bentuk Box-Behnken (kaedah gerak balas permukaan). Hasil kajian menunjukkan bahawa tindak balas penjerapan minyak sangat dipengaruhi oleh kepekatan minyak, kuantiti penjerap dan tempoh masa. Analisis statistik ANOVA menunjukkan korelasi yang baik bagi setiap parameter eksperimen.

 

Kata kunci:  kulit pisang, penyingkiran minyak, kaedah gerak balas permukaan

 

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