Properties and flocculation efficiency of cationized biopolymers and their applicability in papermaking and in conditioning of pulp and paper sludge

Lauri Kuutti (Corresponding Author), Sanna Haavisto, Sari Hyvärinen, Hannu Mikkonen, Riikka Koski, Soili Peltonen, Tapani Suortti, Hanna Kyllönen

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)2836-2850
Number of pages15
JournalBioResources
Volume6
Issue number3
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

Biopolymers
Papermaking
Flocculation
flocculation
conditioning
Pulp
Polymers
polymer
sludge
Starch
starch
Cellulose
cellulose
Molecular weight
pulp and paper industry
Paper and pulp industry
Lignin
Health risks
Dewatering
Chitosan

Keywords

  • Biodegradable flocculants
  • starch
  • cellulose
  • papermaking retention
  • dewatering

Cite this

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title = "Properties and flocculation efficiency of cationized biopolymers and their applicability in papermaking and in conditioning of pulp and paper sludge",
abstract = "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.",
keywords = "Biodegradable flocculants, starch, cellulose, papermaking retention, dewatering",
author = "Lauri Kuutti and Sanna Haavisto and Sari Hyv{\"a}rinen and Hannu Mikkonen and Riikka Koski and Soili Peltonen and Tapani Suortti and Hanna Kyll{\"o}nen",
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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 journalArticleScientificpeer-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 -