| 作成者 |
|
|
|
| 本文言語 |
|
| 出版者 |
|
|
|
| 発行日 |
|
| 収録物名 |
|
| 巻 |
|
| 号 |
|
| 開始ページ |
|
| 終了ページ |
|
| 出版タイプ |
|
| アクセス権 |
|
| Crossref DOI |
|
| 権利関係 |
|
| 概要 |
Biochitin is chitin obtained from a biological fermentation that could be used as adsorbent. Biochitin used in this study was produced by sequential fermentation method from white shrimp shell using L...actobacillus plantarum (L.plantarum) followed by using Bacillus thuringiensis (B.thuringiensis). Modification of biochitin was investigated by immobilization of dithizone onto the biochitin. Immobilization parameters were optimized including the mass of dithizone and reflux time. The optimum conditions were determined based on the optimum adsorption efficiency of Cr(VI) on the modified biochitin. Adsorption was conducted triplo using 50 mg/L Cr (VI) at pH 5.0 for 6 hours The modified biochitin produced by optimum parameters was then characterized including the functional groups, surface morphology, particle size, and adsorption efficiency for Cr(VI) from electroplating waste. Results of this study showed that the optimum modification conditions were achieved by immobilization of 0.015 g dithizone/ g of biochitin and the mixture was refluxed for 4 hours in toluene medium at 70ed from SEM images that the modified biochitin had more uniform pores than unmodified biochitin. In addition, the modified biochitin was micro particle with the size was in the range of 90 - 200 μm. In addition, the modified biochitin could be used to remove the diluted Cr(VI) from electroplating waste at pH 4.6 with the adsorption efficiency was 83.45% ± 0.40, higher than the one using the unmodified biochitin. o C. This modified biochitin had the FTIR spectra at wavelength numbers of 2376.13 cm-1 (S-H group), 1382.87 cm-1 (S=C group), and at 1558.38 cm-1 (N-H group) which shows that dithizone had been successfully immobilized onto biochitin. It was also show続きを見る
|
Mendeley出力
Pages_429-435