{"id":41,"date":"2011-07-26T16:07:52","date_gmt":"2011-07-26T20:07:52","guid":{"rendered":"http:\/\/umaine.edu\/pdc\/?page_id=41"},"modified":"2026-02-05T12:09:54","modified_gmt":"2026-02-05T17:09:54","slug":"pulping","status":"publish","type":"page","link":"https:\/\/umaine.edu\/pdc\/facilities-available-for-use\/pulping\/","title":{"rendered":"Pulping"},"content":{"rendered":"\n<p>The PDC&#8217;s pilot plant is equipped to perform pulping studies to evaluate wood and non-wood raw materials and chemical additives. These studies can be performed on any stage of chemical or mechanical pulp production.<\/p>\n\n\n<style>.kb-row-layout-id41_ab9b1d-ac > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id41_ab9b1d-ac > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id41_ab9b1d-ac > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id41_ab9b1d-ac > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id41_ab9b1d-ac > .kt-row-column-wrap{padding-top:0px;padding-right:50px;padding-bottom:0px;padding-left:50px;grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id41_ab9b1d-ac > .kt-row-column-wrap{padding-right:25px;padding-left:25px;grid-template-columns:minmax(0, 1fr);}}<\/style><div 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.kt-tabs-id41_30dd69-c5 > .kt-tabs-title-list li .kt-tab-title, .wp-block-kadence-tabs .kt-tabs-id41_30dd69-c5 > .kt-tabs-content-wrap > .kt-tabs-accordion-title .kt-tab-title{font-size:px;}}@media all and (max-width: 767px){.kt-tabs-id41_30dd69-c5 > .kt-tabs-content-wrap > .wp-block-kadence-tab{border-top:3px solid #082e58;border-right:3px solid #082e58;border-bottom:3px solid #082e58;border-left:3px solid #082e58;}.wp-block-kadence-tabs .kt-tabs-id41_30dd69-c5 > .kt-tabs-title-list li .kt-tab-title, .wp-block-kadence-tabs .kt-tabs-id41_30dd69-c5 > .kt-tabs-content-wrap > .kt-tabs-accordion-title .kt-tab-title{font-size:px;}}<\/style>\n<div class=\"wp-block-kadence-tabs alignnone um-UMTabsBlue\"><div class=\"kt-tabs-wrap kt-tabs-id41_30dd69-c5 kt-tabs-has-2-tabs kt-active-tab-1 kt-tabs-layout-tabs kt-tabs-tablet-layout-inherit kt-tabs-mobile-layout-accordion kt-tab-alignment-left kt-create-accordion\"><ul class=\"kt-tabs-title-list kb-tabs-list-columns kb-tab-title-columns-2\"><li id=\"tab-pulpingequipment\" class=\"kt-title-item kt-title-item-1 kt-tabs-svg-show-always kt-tabs-icon-side-right kt-tab-title-active\"><a href=\"#tab-pulpingequipment\" data-tab=\"1\" class=\"kt-tab-title kt-tab-title-1 \"><span class=\"kt-title-text\">Pulping Equipment<\/span><\/a><\/li><li id=\"tab-othercapabilities\" class=\"kt-title-item kt-title-item-2 kt-tabs-svg-show-always kt-tabs-icon-side-right kt-tab-title-inactive\"><a href=\"#tab-othercapabilities\" data-tab=\"2\" class=\"kt-tab-title kt-tab-title-2 \"><span class=\"kt-title-text\">Other capabilities<\/span><\/a><\/li><\/ul><div class=\"kt-tabs-content-wrap\">\n<div class=\"wp-block-kadence-tab kt-tab-inner-content kt-inner-tab-1 kt-inner-tabcf2d30-04\"><div class=\"kt-tab-inner-content-inner\"><style>.wp-block-kadence-iconlist.kt-svg-icon-list-items41_027bc2-28:not(.this-stops-third-party-issues){margin-top:0px;margin-bottom:0px;}.wp-block-kadence-iconlist.kt-svg-icon-list-items41_027bc2-28 ul.kt-svg-icon-list:not(.this-prevents-issues):not(.this-stops-third-party-issues):not(.tijsloc){margin-top:0px;margin-right:0px;margin-bottom:var(--global-kb-spacing-sm, 1.5rem);margin-left:0px;}.wp-block-kadence-iconlist.kt-svg-icon-list-items41_027bc2-28 ul.kt-svg-icon-list{grid-row-gap:5px;}.wp-block-kadence-iconlist.kt-svg-icon-list-items41_027bc2-28 ul.kt-svg-icon-list .kt-svg-icon-list-item-wrap .kt-svg-icon-list-single{margin-right:10px;}.kt-svg-icon-list-items41_027bc2-28 ul.kt-svg-icon-list .kt-svg-icon-list-level-0 .kt-svg-icon-list-single svg{font-size:20px;}<\/style>\n<div class=\"wp-block-kadence-iconlist kt-svg-icon-list-items kt-svg-icon-list-items41_027bc2-28 kt-svg-icon-list-columns-1 alignnone\"><ul class=\"kt-svg-icon-list\"><style>.kt-svg-icon-list-item-41_06d5aa-8a .kt-svg-icon-list-text mark.kt-highlight{background-color:unset;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<li class=\"wp-block-kadence-listitem kt-svg-icon-list-item-wrap kt-svg-icon-list-item-41_06d5aa-8a\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_checkCircle kt-svg-icon-list-single\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg><\/span><span class=\"kt-svg-icon-list-text\">Rocking digester (4:1 liquor to wood ratio)<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-41_a2c4d7-d7 .kt-svg-icon-list-text mark.kt-highlight{background-color:unset;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<li class=\"wp-block-kadence-listitem kt-svg-icon-list-item-wrap kt-svg-icon-list-item-41_a2c4d7-d7\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_checkCircle kt-svg-icon-list-single\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg><\/span><span class=\"kt-svg-icon-list-text\">4 ft<sup>3<\/sup> steam-heated digester<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-41_57ed76-7f .kt-svg-icon-list-text mark.kt-highlight{background-color:unset;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<li class=\"wp-block-kadence-listitem kt-svg-icon-list-item-wrap kt-svg-icon-list-item-41_57ed76-7f\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_checkCircle kt-svg-icon-list-single\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg><\/span><span class=\"kt-svg-icon-list-text\">Bomb digester\/reactor<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-41_2bca75-8f .kt-svg-icon-list-text mark.kt-highlight{background-color:unset;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<li class=\"wp-block-kadence-listitem kt-svg-icon-list-item-wrap kt-svg-icon-list-item-41_2bca75-8f\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_checkCircle kt-svg-icon-list-single\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg><\/span><span class=\"kt-svg-icon-list-text\">Alkali profiling pulping system<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-41_c2ed44-fe .kt-svg-icon-list-text mark.kt-highlight{background-color:unset;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<li class=\"wp-block-kadence-listitem kt-svg-icon-list-item-wrap kt-svg-icon-list-item-41_c2ed44-fe\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_checkCircle kt-svg-icon-list-single\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg><\/span><span class=\"kt-svg-icon-list-text\">Slotted flat screen<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-41_577a59-67 .kt-svg-icon-list-text mark.kt-highlight{background-color:unset;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<li class=\"wp-block-kadence-listitem kt-svg-icon-list-item-wrap kt-svg-icon-list-item-41_577a59-67\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_checkCircle kt-svg-icon-list-single\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M22 11.08V12a10 10 0 1 1-5.93-9.14\"\/><polyline points=\"22 4 12 14.01 9 11.01\"\/><\/svg><\/span><span class=\"kt-svg-icon-list-text\">TMP\/CTMP\/RMP pilot disc refiner (12&#8243; disc)<\/span><\/li>\n<\/ul><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-kadence-tab kt-tab-inner-content kt-inner-tab-2 kt-inner-tab2a3ae8-0a\"><div class=\"kt-tab-inner-content-inner\"><style>.wp-block-kadence-advancedheading.kt-adv-heading41_a8f2f0-6c, .wp-block-kadence-advancedheading.kt-adv-heading41_a8f2f0-6c[data-kb-block=\"kb-adv-heading41_a8f2f0-6c\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading41_a8f2f0-6c mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading41_a8f2f0-6c[data-kb-block=\"kb-adv-heading41_a8f2f0-6c\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading41_a8f2f0-6c img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading41_a8f2f0-6c[data-kb-block=\"kb-adv-heading41_a8f2f0-6c\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading41_a8f2f0-6c wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading41_a8f2f0-6c\">A <strong>pulp yield measurement method<\/strong> has been developed at the PDC.&nbsp; Samples are collected at the mill, then analyzed for cellulose, hemicellulose, lignin content, and cellulose degree of polymerization. The total yield for the mill operation is then calculated. A validated data bank for estimating pulp yield using this technique can be used to estimate the yield of a variety of wood species and various pulps, provided that the wood furnish composition is known.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading41_ae854a-50, .wp-block-kadence-advancedheading.kt-adv-heading41_ae854a-50[data-kb-block=\"kb-adv-heading41_ae854a-50\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading41_ae854a-50 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading41_ae854a-50[data-kb-block=\"kb-adv-heading41_ae854a-50\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading41_ae854a-50 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading41_ae854a-50[data-kb-block=\"kb-adv-heading41_ae854a-50\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading41_ae854a-50 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading41_ae854a-50\">Our lab is also equipped to evaluate the effects of kraft pulping on pulp yield, optimize fiber strength, evaluate the effects of additives during pulping, and the analysis of extractives, carbohydrates, ash, viscosity, klason- and soluble lignin and kappa and permanganate number.<\/p>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<p><\/p>\n<\/div><\/div>\n\n<\/div><\/div>\n\n\n<p>To begin working with us, visit our <a href=\"https:\/\/umaine.edu\/pdc\/working-with-us\/\">Working with the PDC<\/a> page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The PDC&#8217;s pilot plant is equipped to perform pulping studies to evaluate wood and non-wood raw materials and chemical additives. These studies can be performed on any stage of chemical or mechanical pulp production. To begin working with us, visit our Working with the PDC page.<\/p>\n","protected":false},"author":1159,"featured_media":0,"parent":13,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"templates\/page-withsidebar.php","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-41","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pulping - The Process Development Center - University of Maine<\/title>\n<meta name=\"description\" content=\"Our Center can perform pulping studies to evaluate wood and non-wood raw materials, chemical additives, and any stage of chemical or mechanical pulp production.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/umaine.edu\/pdc\/facilities-available-for-use\/pulping\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pulping - 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