Application Of Banana Stem And Rice Straw Derived Bio-Flocculants For Textile Wastewater Treatment
| dc.contributor.author | Ishak, Siti Aisyah | |
| dc.date.accessioned | 2017-02-15T00:55:09Z | |
| dc.date.available | 2017-02-15T00:55:09Z | |
| dc.date.issued | 2016-01 | |
| dc.description.abstract | This study involve three different stages which are extraction of bio-flocculant (P) from banana pseudo-stem and rice straw, treatment of textile wastewater treated effluent using extracted bio-flocculant and phytotoxicity test on the sludge produced after coagulation and flocculation process. The bio-flocculant extracted from banana pseudo-stem using hot acid extraction process was found to be higher in yield at 32.8 % while only 16.2% from rice straw was manage to collect from the dry weight 10 g respectively. Later the bio-flocculant was analysing using Fourier Transform Infrared Spectroscopy (FTIR) to detect the existence of functional group which helps in the flocculation process. Hydroxyl and carboxyl group was detected from the FTIR analysis. The textile wastewater treated effluent was analysed for colour and COD reduction by coagulation (FeCl3) and flocculation (P and PAM) using a standard jar test apparatus. The coagulation and flocculation process was run using Response Surface Design – Central Composite Design in order to see the efficiency between (FeCl3 and P) and (FeCl3and PAM) at the optimum condition with varied parameters such as pH, coagulant dose and flocculant dose. Treatment by FeCl3 and PAM shows the highest colour removal with 95% (31 pt. co) and 92.0 % (42 mg/ L) COD reduction at condition pH around 5.4, 375 mg/ L of coagulant and 28 mg/ L of flocculant dose. While the treatment with FeCl3 and P was able to remove the colour around 83.0 % (104 mg/ L) and 76.0 % (127 mg/ L) of COD reduction at treatment conditions of pH 7.2, coagulant dose 353.0 mg/ L, and flocculant dose 30.9 mg/L. Finally, the sludge residue from the process was analysed for phytotoxicity test using Lactuca sativa seeds. Based on the seed germination test, the sludge produce after the process using bio-flocculant showed less toxicity index (LC50: 55) rather than PAM (LC50: 19). In conclusion, the used of bio-flocculant was a success in order to remove colour and COD of textile wastewater treated effluent. Furthermore, the sludge produced also show a positive effect whilst is at low toxicity index. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/3728 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universiti Sains Malaysia | en_US |
| dc.subject | Banana pseudo-stem and rice straw | en_US |
| dc.title | Application Of Banana Stem And Rice Straw Derived Bio-Flocculants For Textile Wastewater Treatment | en_US |
| dc.type | Thesis | en_US |
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