A Study Of Polydadmac Induced Flocculation In Treatment Of Pulp And Paper Mills Wastewater

Simple item page
dc.contributor.authorAhmad Razali, Mohd Amin
dc.date.accessioned2018-12-03T07:21:23Z
dc.date.available2018-12-03T07:21:23Z
dc.date.issued2011-10
dc.description.abstractThis study investigates the effect of polyDADMAC on treating pulp and paper mills wastewater. PolyDADMAC was synthesized with different monomer concentration. Fourier Transform Infrared Spectroscopy (FTIR) was conducted to confirm the structure of polyDADMAC. Ubbelohde Viscometer was used to determine intrinsic viscosity and these values were used to determine molecular weight by employing the Mark Houwink equations. Molecular weight and intrinsic viscosity increased with increasing of monomer concentration (1.37 to 1.87 M). Beyond the monomer concentration 1.87M the molecular weight began to decrease. Subsequently, the jar test was conducted using polyDADMAC produced on kaolin suspensions and factory wastewater. The effectiveness of polyDADMAC on treating kaolin suspensions as simulated wastewater was conducted before tested in actual wastewater. Flocculation tests for kaolin suspension were carried out at constant polyacrylamide (PAM) dosage of 0.2 mg L-1 while the dosage of polyDADMAC was varied from 0.2 - 50 mg L-1. Flocculation tests for pulp and paper mills were divided in three studies. Initially, the effect of molecular weight of polyDADMAC alone then the effect of polyDADMAC dosages in hybrid system with PAM and finally the effect of different molecular weight of polyDADMAC in hybrid systems with PAM. Dosage range was from 0.4 - 2.0 mg L-1 for flocculation tests using polyDADMAC alone, while in the hybrid system, PAM dosages in the range of 0.4 - 8.0 mg L-1. The effectiveness of the flocculation was measured based on the reduction of the turbidity, the total suspended solids (TSSs), chemical on demand (COD) reduction and zeta potential measurements. It was found that the flocculation performance of higher molecular weight samples was more efficient compared with that of lower molecular weights. This might be due to the bridging mechanism, which occurred concurrently with the charge neutralization effect during flocculation. Increasing dosages of polyDADMAC increased the destabilization of particles and produce small flocs while adding and increasing PAM was increased the size of flocs for a better synergistic flocculation process.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/7176
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPolydadmac induced flocculation in treatmenten_US
dc.subjectof pulp and paper mills wastewateren_US
dc.titleA Study Of Polydadmac Induced Flocculation In Treatment Of Pulp And Paper Mills Wastewateren_US
dc.typeThesisen_US
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral - Tesis