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Remazol brilliant blue r reactive dye removal by durian peel based activated carbon/Mohamad Firdaus Mohamad Yusop

Remazol brilliant blue r reactive dye removal by durian peel based activated carbon _Mohamad Firdaus Mohamad Yusop_K4_2011_NI
Karbon teraktif komersial yang di dapati sekarang masih dianggap mahal disebabkan penggunaan bahan mentah yang tidak boleh diperbaharui dan agak mahal seperti arang batu bitumen. Oleh itu, penyelidikan ini bertujuan untuk menyiasat potensi penggunaan sisa-sisa buahan tempatan iaitu kulit buah durian sebagai alternatif kepada bahan mentah sedia ada untuk menghasilkan karbon teraktif di mana ia boleh menyingkirkan pewarna reaktif Remazol Brilliant Blue R (RBBR) daripada larutan akuas. Pengaktifan fizi-kimia yang terdiri daripada jerap isi dengan sodium karbonat, (Na2CO3) dan diikuti dengan gasifikasi karbon dioksida (CO2) telah digunakan untuk menghasilkan karbon teraktif. Keputusan rekabentuk eksperimen mendedahkan bahawa suhu pengaktifan, masa pengaktifan dan nisbah jerap isi (IR) adalah faktor-faktor penting yang mempengaruhi hasil karbon teraktif dan prestasi penjerapan untuk pewarna RBBR. Keadaan penyediaan karbon teraktif yang optima ialah 741.81°C, 2.47 h dan 1.87 masingmasing untuk suhu pengaktifan, masa pengaktifan dan nisbah jerap isi. Karbon teraktif yang terhasil adalah berliang meso yang heterogen dengan luas permukaan dan isipadu liang yang tinggi. Analisis infra merah pengubahan fourier memaparkan kehadiran pelbagai kumpulan berfungsi pada permukaan karbon teraktif ini. Kesan-kesan kepekatan awal bahan jerap (25 – 250 mg/l), masa sentuh, suhu larutan (30-60°C), pH larutan (2-12), garis sesuhu, kinetik dan termodinamik bagi sistem-sistem penjerapan tersebut dinilai melalui kajian penjerapan kelompok. Penjerapan pewarna RBBR meningkat dengan peningkatan kepekatan awal dan masa sentuh. Kecekapan penyingkiran pewarna RBBR adalah tertinggi pada pH 2-4. Isoterma keseimbangan dan kinetik penjerapan pewarna RBBR terbaik dipadankan masing-masing oleh model garis sesuhu Freundlich dan model kinetik pseudo tertib kedua. Proses penjerapan ini menunjukkan nilai tenaga pengaktifan yang kurang daripada 40 kJ/mol yang mencirikan mekanisma penjerapan fizikal. ___________________________________________________________________________________ Commercially available activated carbon are still considered expensive due to the use of non-renewable and relatively expensive raw material such as bituminous coal. Therefore, this study investigates the potential use of local fruit waste which is durian peel (DP) as the alternative precursor for the preparation of activated carbon which can be applied for the removal of Remazol Brilliant Blue R (RBBR) reactive dyes from aqueous solution. Physiochemical activation consisting of sodium carbonate (Na2CO3) impregnation plus carbon dioxide (CO2) gasification was used to prepare the activated carbons. The experimental design results revealed that activation temperature, activation time and impregnation ratio (IR) were important factors influencing the activated carbons yields and adsorption performance for RBBR. The optimum conditions obtained for preparing the activated carbon were 741.81°C, 2.47 h and 1.87 for activation temperature, activation time and IR respectively. The activated carbon prepared were heterogenous mesoporous with high surface area and pore volume. Fourier Transform Infrared (FTIR) analyses revealed the presence of various functional groups on the activated carbon surfaces. The effect of adsorbate initial concentrations (25-250 mg/L), contact time, solution temperature (30-60°C), solution pH (2-12), isotherms, kinetics and thermodynamics of the adsorption systems were evaluated through batch adsorption test. The RBBR dye adsorption uptakes increased with increasing initial concentration and contact time. The RBBR dye removal efficiency was the highest at pH 2-4. Adsorption equilibrium and kinetic of RBBR dye was best fitted by Freundlich isotherm model and pseudo-second-order kinetic model, respectively. The adsorption process investigated showed activation energy value lower than 40 kJ/mol which indicates physisorption mechanism.
Contributor(s):
Mohamad Firdaus Mohamad Yusop - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
as bituminous coal ; local fruit waste ; Remazol Brilliant Blue R (RBBR)
First presented to the public:
4/1/2011
Original Publication Date:
10/5/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 103
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-10-05 16:31:44.422
Submitter:
Nor Hayati Ismail

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