(For USM Staff/Student Only)

EngLib USM > Ω School of Chemical Engineering >

Chitosan-based composite as effective adsorbent for methylene blue and reactive orange 16

Chitosan-based composite as effective adsorbent for methylene blue and reactive orange 16 / Lee Jing Yi
Adsorben kos rendah telah digunakan secarame luas baru-baru ini bagi menggantikan adsorben kos yang tinggi. Dalam kajian ini, kitosan dan kulit halia telah dipilih untuk mensintesis adsorben hibrid yang mempunyai keupayaan untuk menyingkirkan Methylene Blue (MB) dan Reaktif Orange 16 (RO16) dalam masa yang sama. Komposisi terbaik untuk kitosan-halia (CS-GP) komposit adalah 50%: 50%. Komposit disintesis telah digambarkan dan ditunjunk cirinya menggunakan Mikroskop Imbasan Elektron (SEM), Tenaga serakan sinar-X Spektroskopi (EDX) dan Fourier Transform Infrared Spektroskopi (FTIR). Prestasi penjerapan CS-GP komposit telah dikaji dengan menukar parameter seperti konsentrasi awal (25 mg /L-400 mg / L), pH (3-13) dan suhu (30,40,50oC). Keputusan telah didapati bahawa kapasiti penjerapan CS-GP komposit adalah lebih tinggi dalam kepekatan pewarna permulaan yang lebih tinggi. Bagi MB, pengambilan penjerapan CS-GP komposit adalah lebih tinggi dalam keadaan alkali manakala bagi RO16, CS-GP komposit memberikan penyingkiran pewarna yang lebih tinggi dalam keadaan asid. Langmuir dan Feundlich isoterma digunakan untuk mengaji penjerapan keseimbangan MB dan RO16 pada 30, 40 dan 50 oC. MB penjerapan sesuai dalam Langmuir isoterma dengan kapasiti penjerapan maksimum 625 mg / g pada 50 oC. Proses penjerapan RO16 didapati sesuai dalam Feundlich isoterma. Pseudo kinetic tertib kedua didapati sesuai dengan baik dalam penjerapan kedua-dua MB dan RO16 yang menunjukkan chemisorption ialah kadar ditentukan. _______________________________________________________________________________________________________ Low-cost adsorbent has been used widely recently to replace high-cost adsorbent. In present study, chitosan and ginger peel has been chosen to synthesize a hybrid adsorbent which has the ability to remove Methylene Blue (MB) and Reactive Orange 16 (RO16). The best composition for chitosan-ginger (CS-GP) composite was 50%:50 %. The synthesized composite were characterized using Scanning Electron Microscope (SEM), Energy Dispersive X-rays Spectroscopy (EDX) and Fourier Transform Infrared Spectroscopy (FTIR). The adsorption performance of CS-GP composite was investigated by manipulate parameters such as initial concentration (25 mg/L-400 mg/L), solution pH (3-13) and temperature (30,40, 50 oC). It was found that the adsorption uptake of CS-GP composite is higher in higher initial dye concentration. For MB, the adsorption uptake of CS-GP composite was much higher in alkaline condition while for RO16, CS-GP composite give a higher dye removal in acid condition. Langmuir and Feundlich isotherm were used to study MB and RO16 adsorption equilibrium at 30, 40 and 50 oC. MB adsorption fitted well in Langmuir isotherm with a maximum adsorption capacity of 625 mg/g at 50 oC. RO16 adsorption was found fitted well in Feundlich isotherm. Kinetic of MB and RO16 adsorption were best described by pseudo-second order kinetic model which indicated that chemisorption is the rate-determining step.
Contributor(s):
Lee Jing Yi - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875005628
Language:
English
Subject Keywords:
Low-cost; adsorbent; chitosan
First presented to the public:
6/1/2015
Original Publication Date:
8/5/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 77
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-08-05 11:13:47.895
Submitter:
Mohd Jasnizam Mohd Salleh

All Versions

Thumbnail Name Version Created Date
Chitosan-based composite as effective adsorbent for methylene blue and reactive orange 161 2020-08-05 11:13:47.895