A. Y. Zahrim and A. Nasimah and Rosalam Sarbatly (2014) Lignin removal from Aqueous Solution using Calcium Lactate: the effect of Polymers and Magnesium Hydroxide as a Flocculant aids. ASEAN Journal of Chemical Engineering, 14 (2). pp. 19-27.
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Lignin removal from Aqueous Solution using Calcium Lactate the effect of Polymers and Magnesium Hydroxide as a Flocculant aids.PDF Restricted to Registered users only Download (1MB) |
Abstract
Palm oil mill effluent (POME) which is mainly associated with lignin has becoming a major concern due to its highly coloured appearance. The main colourant, i.e. lignin particles are difficult to be degraded in oil palm conventional biological ponding system. Coagulation/flocculation could remove the lignin prior to biological treatment and is considered vital to minimize the recalcitrance nature of palm oil mill effluent particles. In this study, the coagulation/flocculation process was investigated to remove lignin particles from aqueous solution. A non-toxic and biodegradable chemical i.e. calcium lactate was utilized as a destabilizer for the removal of lignin with an addition of several flocculants aid i.e. anionic polyacrylamide (APAM), polydimethyldiallylammonium chloride (polyDADMAC) and magnesium hydroxide. The effect of coagulant and flocculant aids dosage was investigated. From this study, it was found that the optimum condition was at 0.7g/L of calcium lactate and 0.5-1.0mg/L of APAM with ~64% of lignin removal. At concentration of 4 mg/L, the removal of lignin for APAM and polyDADMAC is similar. This result shows that the calcium lactate has potential as a coagulant and the efficiency can be enhanced with an addition of polymeric flocculant aids.
| Item Type: | Article |
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| Keyword: | Calcium lactate , coagulation/flocculation , lignin , zeta potential , polymer , magnesium hydroxide |
| Subjects: | T Technology > TP Chemical technology |
| Department: | FACULTY > Faculty of Engineering |
| Depositing User: | NORAINI LABUK - |
| Date Deposited: | 10 Jul 2018 14:59 |
| Last Modified: | 11 Jan 2021 17:04 |
| URI: | https://eprints.ums.edu.my/id/eprint/20447 |
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