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terramycin on activated carbon using Response Surface Methodology (RSM)i

terramycin on activated carbon using Response Surface Methodology (RSM) / Noor Syaza Husaini
Penjerapan terramycin ke atas karbon teraktif berasaskan kayu (KTK) disiasat dalam proses penjerapan kelompok. Keberkesanan penyingkiran terramycin ke atas KTK yang tidak diubahsuai dibandingkan dengan KTK yang diubahsuai. Karbon teraktif diubahsuai dengan menggunakan kaedah pengisitepuan menggunakan lima jenis larutan iaitu HCl, H2SO4, HNO3, Cu(NO3)2 dan KOH. Kapasiti penjerapan maksimum terramycin ke atas karbon teraktif yang diisitepu dengan peratus berat 1 Cu(NO3)2 telah memperoleh keberkesanan penyingkiran sebanyak 99.85%. Penjerapan optimum dengan menggunakan Kaedah Tindak Balas Permukaan (KTBP) yang mengambil kira beberapa parameter termasuk nilai pH (3-7), kepekatan awal (5-25 mg/L) dan suhu (30-50 ⁰C). Terdapat tiga set parameter optimum untuk penjerapan terramycin ke atas KTK yang tidak diubahsuai dan diubahsuai berdasarkan Reka Bentuk Komposit Pusat (RBKP) dengan menggunakan RSM (pH 7, 25 ppm, 50 ⁰C; pH 7, 5 ppm, 50 ⁰C; pH 3, 5 ppm, 50 ⁰C) (pH 7, 20 ppm, 36.4 ⁰C; pH 6.5, 20 ppm, 42.3 ⁰C; pH 6, 23 ppm, 39.3 ⁰C). Persamaan-persamaan linear dan polinomial kuadratik telah dibina untuk meramal peratusan keberkesanan penyingkiran terramycin. Nilai keputusan eksperimen menunjukkan nilai yang munasabah dengan nilai yang diramalkan. Berdasarkan nilai statistik ANOVA, nilai kebarangkalian yang rendah (<0.05) menunjukkan penjerapan terramycin ke atas KTK adalah sangat signifikan. Maksimum nilai keberkesanan penjerapan terramycin ke atas KTK yang tidak diubahsuai dan diubahsuai dengan peratus ralat terendah adalah 93.85% dan 99.63% berdasarkan model yang telah disahkan ke atas keadaan optimum. _______________________________________________________________________________________________________ The adsorption of terramycin onto wood-based activated carbon (WAC) is investigated in a batch adsorption process. Removal efficiency of terramycin onto non-modified WAC is compared with the modified WAC. Modified WAC is prepared by impregnation method using five types of solution which are HCl, H2SO4, HNO3, Cu(NO3)2, and KOH. The maximum adsorption capacity of terramycin on WAC impregnated with 1 wt % of Cu(NO3)2 is obtained with 99.85% removal efficiency. The adsorption is optimized by using response surface methodology (RSM) considering various parameters including pH value (3-7), initial concentration (5-25mg/L) and temperature (30-50 ⁰C). Three sets of optimum conditions are found to be optimum for terramycin adsorption on non-modified and modified WAC based on the Central Composite Design (CCD) using RSM (pH 7, 25 ppm, 50 ⁰C; pH 7, 5 ppm, 50 ⁰C; pH 3, 5 ppm, 50 ⁰C) (pH 7, 20 ppm, 36.4 ⁰C; pH 6.5, 20 ppm, 42.3 ⁰C; pH 6, 23 ppm, 39.3 ⁰C), respectively. One linear and one quadratic polynomial equations are developed to predict the percentage of removal efficiency. The experimental results indicated reasonable agreement with the predicted values. Based on ANOVA statistical value, the adsorption of terramycin onto WAC has been found to be highly significant, with low probability (p) values (<0.05). The maximum experimental terramycin removal efficiencies with the least error percentage of 93.85% and 99.63% for non-modified and modified WAC, respectively are obtained based on the validation model of optimum conditions.
Contributor(s):
Noor Syaza Husaini - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003107170
Accession Number : 875007290
Language:
English
Subject Keywords:
adsorption of terramycin; wood-based activated carbon; impregnation method
First presented to the public:
6/1/2017
Original Publication Date:
4/24/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 87
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-24 16:50:59.585
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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