{"id":7665,"date":"2026-02-26T14:21:23","date_gmt":"2026-02-26T19:21:23","guid":{"rendered":"https:\/\/umaine.edu\/pdc\/?page_id=7665"},"modified":"2026-02-26T14:33:26","modified_gmt":"2026-02-26T19:33:26","slug":"pulping2","status":"publish","type":"page","link":"https:\/\/umaine.edu\/pdc\/pulping2\/","title":{"rendered":"Pulping2"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center\">Pulping<\/h2>\n\n\n\n<p class=\"has-text-align-center\">The PDC\u2019s 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>.kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .wp-block-kadence-tab{border-top:4px solid #dee2e6;border-right:4px solid #dee2e6;border-bottom:4px solid #dee2e6;border-left:4px solid #dee2e6;border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:50px;border-bottom-left-radius:0px;padding-top:var(--global-kb-spacing-lg, 3rem);padding-right:var(--global-kb-spacing-lg, 3rem);padding-bottom:var(--global-kb-spacing-lg, 3rem);padding-left:var(--global-kb-spacing-lg, 3rem);min-height:200px;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-title-list li{margin-top:0px;margin-right:-4px;margin-bottom:10px;margin-left:0px;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-title-list li .kt-tab-title, .wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .kt-tabs-accordion-title .kt-tab-title{line-height:1.4em;font-weight:regular;font-style:normal;border-top-width:4px;border-right-width:0px;border-bottom-width:4px;border-left-width:4px;border-top-left-radius:10px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:10px;padding-top:12px;padding-right:8px;padding-bottom:12px;padding-left:20px;border-color:var(--global-palette7, #eeeeee);color:#4a5568;background:var(--global-palette7, #eeeeee);}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .kt-tabs-accordion-title .kt-tab-title{margin-top:0px;margin-right:-4px;margin-bottom:10px;margin-left:0px;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-title-list li .kt-tab-title:hover, .wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .kt-tabs-accordion-title .kt-tab-title:hover{border-color:var(--global-palette8, #F7FAFC);color:var(--global-palette5, #444444);background:var(--global-palette8, #F7FAFC);}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-title-list li.kt-tab-title-active .kt-tab-title, .wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .kt-tabs-accordion-title.kt-tab-title-active .kt-tab-title{border-color:#dee2e6;color:var(--global-palette5, #444444);background:var(--global-palette9, #ffffff);}@media all and (min-width: 1025px){.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83{display:flex;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-title-list{float:none;width:30%;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap{float:none;width:auto;-webkit-flex:1;flex:1;}}@media all and (max-width: 1024px){.kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .wp-block-kadence-tab{border-top:4px solid #dee2e6;border-right:4px solid #dee2e6;border-bottom:4px solid #dee2e6;border-left:4px solid #dee2e6;}}@media all and (min-width: 768px) and (max-width: 1024px){.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83{display:flex;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-title-list{float:none;width:30%;}.wp-block-kadence-tabs .kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap{float:none;width:auto;-webkit-flex:1;flex:1;}}@media all and (max-width: 767px){.kt-tabs-id7665_a15b92-83 > .kt-tabs-content-wrap > .wp-block-kadence-tab{border-top:4px solid #dee2e6;border-right:4px solid #dee2e6;border-bottom:4px solid #dee2e6;border-left:4px solid #dee2e6;}}<\/style>\n<div class=\"wp-block-kadence-tabs alignnone\"><div class=\"kt-tabs-wrap kt-tabs-id7665_a15b92-83 kt-tabs-has-2-tabs kt-active-tab-2 kt-tabs-layout-vtabs kt-tabs-tablet-layout-inherit kt-tabs-mobile-layout-accordion kt-tab-alignment-left kt-create-accordion\"><ul class=\"kt-tabs-title-list\"><li id=\"tab-strongpulpingequipmentstrong\" class=\"kt-title-item kt-title-item-1 kt-tabs-svg-show-always kt-tabs-icon-side-right kt-tab-title-inactive\"><a href=\"#tab-strongpulpingequipmentstrong\" data-tab=\"1\" class=\"kt-tab-title kt-tab-title-1 \"><span class=\"kt-title-text\"><strong>Pulping Equipment<\/strong><\/span><\/a><\/li><li id=\"tab-strongothercapabilitiesstrong\" class=\"kt-title-item kt-title-item-2 kt-tabs-svg-show-always kt-tabs-icon-side-right kt-tab-title-active\"><a href=\"#tab-strongothercapabilitiesstrong\" data-tab=\"2\" class=\"kt-tab-title kt-tab-title-2 \"><span class=\"kt-title-text\"><strong>Other Capabilities<\/strong><\/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-tab7665_c166b5-c0\"><div class=\"kt-tab-inner-content-inner\"><style>.wp-block-kadence-iconlist.kt-svg-icon-list-items7665_c56708-70:not(.this-stops-third-party-issues){margin-top:0px;margin-bottom:0px;}.wp-block-kadence-iconlist.kt-svg-icon-list-items7665_c56708-70 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-items7665_c56708-70 ul.kt-svg-icon-list{grid-row-gap:5px;}.wp-block-kadence-iconlist.kt-svg-icon-list-items7665_c56708-70 ul.kt-svg-icon-list .kt-svg-icon-list-item-wrap .kt-svg-icon-list-single{margin-right:10px;}.kt-svg-icon-list-items7665_c56708-70 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-items7665_c56708-70 kt-svg-icon-list-columns-1 alignnone\"><ul class=\"kt-svg-icon-list\"><style>.kt-svg-icon-list-item-7665_a249f2-46 .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-7665_a249f2-46\"><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-7665_6aea40-b5 .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-7665_6aea40-b5\"><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\">Steam-Heated Digester (4 cuft capacity)<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-7665_a7d4e8-92 .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-7665_a7d4e8-92\"><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-7665_ea4cc8-88 .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-7665_ea4cc8-88\"><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-7665_366664-dc .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-7665_366664-dc\"><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\">Weyerhaeuser Chip&nbsp;Class Classifier<\/span><\/li>\n\n\n<style>.kt-svg-icon-list-item-7665_aa4f43-9a .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-7665_aa4f43-9a\"><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-7665_c16b06-58 .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-7665_c16b06-58\"><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-tab7665_bb55d3-55\"><div class=\"kt-tab-inner-content-inner\">\n<h3 class=\"wp-block-heading\"><strong>Wood Processing:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Size and thickness distribution&nbsp;&nbsp;<\/li>\n\n\n\n<li>Bark content,&nbsp;basic&nbsp;and bulk density<\/li>\n\n\n\n<li>Chemical composition&nbsp;(extractives, ash,&nbsp;lignin&nbsp;and sugars content)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Pulping:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Alkaline or sulfite pulping optimization studies<\/li>\n\n\n\n<li>Effect of chemical additives on pulp properties<\/li>\n\n\n\n<li>Effect of pulping conditions on pulp properities<\/li>\n\n\n\n<li>Thermo-mechanical pulping&nbsp;(refining energy analysis)<\/li>\n<\/ul>\n\n\n<style>.kadence-column7665_46af08-41 > .kt-inside-inner-col{border-top:11px solid transparent;border-right:11px solid transparent;border-bottom:11px solid transparent;border-left:11px solid transparent;}.kadence-column7665_46af08-41 > .kt-inside-inner-col,.kadence-column7665_46af08-41 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column7665_46af08-41 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column7665_46af08-41 > .kt-inside-inner-col{flex-direction:column;}.kadence-column7665_46af08-41 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column7665_46af08-41 > .kt-inside-inner-col{background-color:#c4dff5;}.kadence-column7665_46af08-41 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column7665_46af08-41{position:relative;}@media all and (max-width: 1024px){.kadence-column7665_46af08-41 > .kt-inside-inner-col{border-top:11px solid transparent;border-right:11px solid transparent;border-bottom:11px solid transparent;border-left:11px solid transparent;flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column7665_46af08-41 > .kt-inside-inner-col{border-top:11px solid transparent;border-right:11px solid transparent;border-bottom:11px solid transparent;border-left:11px solid transparent;flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column7665_46af08-41\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading7665_d9a585-c3, .wp-block-kadence-advancedheading.kt-adv-heading7665_d9a585-c3[data-kb-block=\"kb-adv-heading7665_d9a585-c3\"]{text-align:center;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading7665_d9a585-c3 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading7665_d9a585-c3[data-kb-block=\"kb-adv-heading7665_d9a585-c3\"] 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-heading7665_d9a585-c3 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading7665_d9a585-c3[data-kb-block=\"kb-adv-heading7665_d9a585-c3\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<p class=\"kt-adv-heading7665_d9a585-c3 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading7665_d9a585-c3\">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\n<p class=\"has-text-align-center\">To learn about our lab&#8217;s other pulp testing capabilities, visit our <strong>materials testing<\/strong> page!<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading7665_c2c654-0e, .wp-block-kadence-advancedheading.kt-adv-heading7665_c2c654-0e[data-kb-block=\"kb-adv-heading7665_c2c654-0e\"]{text-align:center;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading7665_c2c654-0e mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading7665_c2c654-0e[data-kb-block=\"kb-adv-heading7665_c2c654-0e\"] 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-heading7665_c2c654-0e img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading7665_c2c654-0e[data-kb-block=\"kb-adv-heading7665_c2c654-0e\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h3 class=\"kt-adv-heading7665_c2c654-0e wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading7665_c2c654-0e\">To learn more or begin working with us, <a href=\"https:\/\/umaine.edu\/pdc\/contact-us-2\/\">contact us<\/a>!<\/h3>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pulping The PDC\u2019s 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 learn more or begin working with us, contact us!<\/p>\n","protected":false},"author":1829,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","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-7665","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pulping2 - The Process Development Center - University of Maine<\/title>\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\/pulping2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pulping2 - The Process Development Center - University of Maine\" \/>\n<meta property=\"og:description\" content=\"Pulping The PDC\u2019s pilot plant is equipped to perform pulping studies to evaluate wood and non-wood raw materials and chemical additives. 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