Enzymatic Deinking Of ONP- An Effective Way Of Producing Quality Newsprint

  • strict warning: Non-static method view::load() should not be called statically in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/views.module on line 1113.
  • strict warning: Declaration of views_handler_argument::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_argument.inc on line 917.
  • strict warning: Declaration of views_handler_argument::query() should be compatible with views_handler::query($group_by = false) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_argument.inc on line 917.
  • strict warning: Declaration of views_plugin_pager_none::post_execute() should be compatible with views_plugin_pager::post_execute(&$result) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/plugins/views_plugin_pager_none.inc on line 69.
  • strict warning: Declaration of views_plugin_query::options_submit() should be compatible with views_plugin::options_submit($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/plugins/views_plugin_query.inc on line 169.
  • strict warning: Declaration of views_plugin_argument_default_taxonomy_tid::options_submit() should be compatible with views_plugin_argument_default::options_submit($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/modules/taxonomy/views_plugin_argument_default_taxonomy_tid.inc on line 119.
  • strict warning: Declaration of views_plugin_style_default::options() should be compatible with views_object::options() in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/plugins/views_plugin_style_default.inc on line 24.
  • strict warning: Declaration of views_plugin_row::options_validate() should be compatible with views_plugin::options_validate(&$form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/plugins/views_plugin_row.inc on line 136.
  • strict warning: Non-static method view::load() should not be called statically in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/views.module on line 1113.
  • strict warning: Non-static method view::load() should not be called statically in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/views.module on line 1113.
  • strict warning: Non-static method view::load() should not be called statically in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/views.module on line 1113.
  • strict warning: Declaration of views_handler_field::query() should be compatible with views_handler::query($group_by = false) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_field.inc on line 1147.
  • strict warning: Declaration of content_handler_field::element_type() should be compatible with views_handler_field::element_type($none_supported = false, $default_empty = false, $inline = false) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/cck/includes/views/handlers/content_handler_field.inc on line 229.
  • strict warning: Declaration of views_handler_filter::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_filter.inc on line 587.
  • strict warning: Declaration of views_handler_filter::query() should be compatible with views_handler::query($group_by = false) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_filter.inc on line 587.
  • strict warning: Declaration of views_handler_filter_search::exposed_validate() should be compatible with views_handler::exposed_validate(&$form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/modules/search/views_handler_filter_search.inc on line 112.
  • strict warning: Declaration of views_handler_area::query() should be compatible with views_handler::query($group_by = false) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_area.inc on line 81.
  • strict warning: Declaration of views_handler_area_text::options_submit() should be compatible with views_handler::options_submit($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_area_text.inc on line 121.
  • strict warning: Non-static method view::load() should not be called statically in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/views.module on line 1113.
  • strict warning: Declaration of views_handler_sort::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_sort.inc on line 165.
  • strict warning: Declaration of views_handler_sort::options_submit() should be compatible with views_handler::options_submit($form, &$form_state) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_sort.inc on line 165.
  • strict warning: Declaration of views_handler_sort::query() should be compatible with views_handler::query($group_by = false) in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/handlers/views_handler_sort.inc on line 165.
  • strict warning: Non-static method view::load() should not be called statically in /home/u809185268/domains/sciencebeingjournal.com/public_html/sites/all/modules/views/views.module on line 1113.
Dhermander Kumar, Rakesh Kumar Jain and Neelam Garg

Biotechnology Division, Central Pulp and Paper Research Institute, Saharanpur, U.P. India.

Department of Microbiology, Kurukshetra University, Kurukshetra, H.R. India

 

 Deinking is an important step in the recycling process for waste paper and old newsprint. Deinking process is the heart of recycling process of old newsprint which decides the quality of the newsprint produced. In traditional deinking process large amount of chemicals are required which makes this method expensive, pollution intensive and also the quality of the news print produced is not upto the mark. In the present study an effort has been made to adopt biotechnological approach in deinking of old newsprint with an objective to make this process eco-friendly, cost competitive and to produce quality news print. Fungal cellulase enzyme produced from isolated fungus Trichoderma longibrachiatum via SSF was used as deinking aid. Results showed that highest enzyme activity could be achieved at a pH of 5.5 and at a temperature of 50-600C. Utilization of the cellulase enzyme thus produced from the isolated fungus Trichoderma longibrachiatum used as deinking aid helped in replacing the deinking chemicals used during deinking of Old News Print. This further improved the optical and strength properties of deinked pulp with significant improvement in its final pulp yield, along with reduction in pollution load in the wastewater generated from the recycling process of deinking.

 

Keywords:Cellulase; COD; ONP; Optical and Physical properties; Trichoderma longibrachiatum.

application/pdf icon| PDF (448 KB) |