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Utilization of industrial combustion waste materials as potential sorbent for heavy metal ion nickel (ii) removal/Mohd Hafiz Mohd Razali_

Utilization of industrial combustion waste materials as potential sorbent for heavy metal ion nickel (ii) removal_Mohd Hafiz Mohd Razali_A9_2011_NI

Abstract Nikel adalah satu logam berat yang wujud di dalam persekitaran kita. Ia wujud sebagai pencemar, menyebabkan kesan-kesan buruk terhadap sistem badan manusia malah ekosistem semulajadi. Nikel juga mempunyai banyak kegunaan yang berguna dalam hidup kita dan berbahaya jika dilepaskan ke dalam sumber-sumber air semulajadi. Nikel digunakan oleh manusia untuk banyak aplikasi yang berbeza. Kebanyakan kaedah rawatan yang biasa digunakan adalah berkesan jika tidak berdasarkan kepada kos modal dan operasi yang tinggi. Oleh sebab itu, bahan serap kos rendah seperti abu sekam padi (RHA), abu terbang batu arang (CFA), dan abu kelapa sawit (PFA) berasal daripada bahan buangan pembakaran perindustrian telah dikenalpasti sebagai penggantian kaedah-kaedah rawatan yang mahal untuk merawat air buangan yang dicemari oleh Nikel(II) ion. RHA/PFA telah dipilih sebagai bahan serap terbaik untuk eksperimen-eksperimen kelompok selanjutnya. Mastersizer digunakan untuk memeriksa analisa permukaan bahan serap, mikroskop elekton pengimbas (SEM) digunakan untuk memeriksa permukaan bahan serap morphologies dan belauan sinar-X (XRD) spektrum telah dicatatkan menggunakan difraktometer sinar X menyiasat hadiah pelbagai fasa dalam bahan serap. Kajian penjerapan telah dilakukan untuk menggambarkan kesan konsentrasi awal, pH, masa pengocakan dan kelajuan pengocakan. pH optimum untuk penjerapan Nikel(II) ialah pH 4, kelajuan pengocakan 130 rpm dan masa pengocakan 40 minit. Dua model isoterma yang sering digunakan, Langmuir dan Freundlich, digunakan untuk menggambarkan data keseimbangan penjerapan. ___________________________________________________________________________________ Nickel is one of the heavy metals which often present in our environment. It exists as contaminant, causing adverse effects to the human body and environments. Nickel also has many useful applications in our life and is harmful if discharged into natural water resources. Human use nickel for many different applications. Commonly used treatment technologies were mostly effective except for their high capital and operational cost. Therefore, the low cost sorbent such rice husk ash (RHA), coal fly ash (CFA), and palm fuel ash (PFA) derived from industrial combustion waste material was investigated as replacement of current expensive methods for treating wastewater contaminated by Nickel(II) ion. RHA/PFA was selected as best sorbent to further batch experiments. Mastersizer was used to examine surface analysis of sorbent, scanning electron microscope (SEM) was used to examine the sorbent surface morphologies and X-ray diffraction (XRD) spectrum was recorded using X-ray diffractometer to investigate the various phases present in the sorbent. Adsorption studies were carried out to delineate the effect of initial concentration, pH, agitation time and agitation speed. The optimum pH for Ni(II) adsorption were pH 4, agitation speed of 130 rpm and agitation time of 40 minutes. The two most common isotherm models, Langmuir and Frendlich, were used to described the adsorption equilibrium data.

Contributor(s): Mohd Hafiz Mohd Razali - Author Primary Item Type: Final Year Project Language: English Subject Keywords: Nickel ; heavy metals ; water First presented to the public: 5/1/2011 Original Publication Date: 3/13/2020 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Civil Engineering Citation: Extents: Number of Pages - 80 License Grantor / Date Granted:   / ( View License ) Date Deposited 2020-03-13 15:42:18.928 Date Last Updated 2020-10-14 09:19:05.096 Submitter: Nor Hayati Ismail

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