Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 2836-2850 |
| Number of pages | 15 |
| Journal | BioResources |
| Volume | 6 |
| Issue number | 3 |
| Publication status | Published - 2011 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Biodegradable flocculants
- starch
- cellulose
- papermaking retention
- dewatering
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Properties and flocculation efficiency of cationized biopolymers and their applicability in papermaking and in conditioning of pulp and paper sludge. / Kuutti, Lauri (Corresponding Author); Haavisto, Sanna; Hyvärinen, Sari; Mikkonen, Hannu; Koski, Riikka; Peltonen, Soili; Suortti, Tapani; Kyllönen, Hanna.
In: BioResources, Vol. 6, No. 3, 2011, p. 2836-2850.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Properties and flocculation efficiency of cationized biopolymers and their applicability in papermaking and in conditioning of pulp and paper sludge
AU - Kuutti, Lauri
AU - Haavisto, Sanna
AU - Hyvärinen, Sari
AU - Mikkonen, Hannu
AU - Koski, Riikka
AU - Peltonen, Soili
AU - Suortti, Tapani
AU - Kyllönen, Hanna
PY - 2011
Y1 - 2011
N2 - Safe biodegradable “green” alternatives with minimal environmental and health risks have received widespread research interest. Thirty different kinds of bio-based flocculants (modified starches, modified celluloses, native chitosan, and lignin-based flocculant) were pre-tested using a simple jar test for the examination of the applicability of new organic flocculants in papermaking and in conditioning of waste activated sludge from the pulp and paper industry. Three starch-based and two cellulose-based polymers were chosen for further flocculation and filtrations tests. Key optimization parameters for the polymer were identified as the increasing of molecular weight and nitrogen content. The starch-based polymer had the best performance in both applications, but in neither of the cases did it function as well as the commercial polyacrylamide-based polymers. The importance of the molecular weight came up in the experiments. The developed starch-based polymer was cationic and had the charge density used in industry. On the other hand, although cationic flocculants are the most used in sludge conditioning, also anionic and non-ionic polymers are needed, depending on the characteristics of the sludge to be flocculated. Overall action of the tailored polymers was also studied in order to predict their potential as papermaking retention and dewatering aids.
AB - Safe biodegradable “green” alternatives with minimal environmental and health risks have received widespread research interest. Thirty different kinds of bio-based flocculants (modified starches, modified celluloses, native chitosan, and lignin-based flocculant) were pre-tested using a simple jar test for the examination of the applicability of new organic flocculants in papermaking and in conditioning of waste activated sludge from the pulp and paper industry. Three starch-based and two cellulose-based polymers were chosen for further flocculation and filtrations tests. Key optimization parameters for the polymer were identified as the increasing of molecular weight and nitrogen content. The starch-based polymer had the best performance in both applications, but in neither of the cases did it function as well as the commercial polyacrylamide-based polymers. The importance of the molecular weight came up in the experiments. The developed starch-based polymer was cationic and had the charge density used in industry. On the other hand, although cationic flocculants are the most used in sludge conditioning, also anionic and non-ionic polymers are needed, depending on the characteristics of the sludge to be flocculated. Overall action of the tailored polymers was also studied in order to predict their potential as papermaking retention and dewatering aids.
KW - Biodegradable flocculants
KW - starch
KW - cellulose
KW - papermaking retention
KW - dewatering
M3 - Article
VL - 6
SP - 2836
EP - 2850
JO - BioResources
JF - BioResources
SN - 1930-2126
IS - 3
ER -