Search

Quantification of hardwood black liquor contamination in pine black liquor, TAPPI Journal February 2024

ABSTRACT: The presence of hardwood black liquor contamination in pine black liquor can negatively impact brownstock washer and evaporator operation, as well as reduce soap separation and yield. It is also believed to negatively impact commercial kraft lignin production. It was desired to develop a method of quantitatively determining the amount of low-level hardwood liquor contamination in pine black liquor. A method employing pyrolysis-gas chromatography mass spectrometry (py-GCMS) was developed to perform the desired measurement. Laboratory cooks with carefully controlled blends of pine and hardwood chips were prepared, and the resulting liquor was measured using this technique. Additionally, samples of pine and hardwood black liquors were blended in known quantities and analyzed. All these samples were submitted as blind samples. The resulting analysis suggests the py-GCMS method was able to accurately determine the level of hardwood contamination between 1% to 10% hardwood liquor using a low-level calibration curve prepared with coniferyl alcohol and sinapyl alcohol as standards.

Steel Cylinders are Key to Hitting Sustainability Targets, Paper360º January/February 2024

Why Use the Technical Database in Planning and Scheduling?, Paper360º January/February 2024

Editoral: Investing in the future: Writing and peer-reviewing for TAPPI Journal, TAPPI Journal July 2024

ABSTRACT: Those who actively participate in TAPPI realize how much there is to gain from the networking, educational resources, career development, and other opportunities that come with this involvement. One important opportunity is the ability to share your work and expertise with others in your field, and an excellent way to do this is by taking part in the TAPPI Journal peer-review process, either as an author or a reviewer or both.

Growth and Opportunity for Mainline Conveyor Systems, Paper360º July/August 2024

Mitigating Malodors at Pulp and Paper Production Plants, Paper360º July/August 2024

NA’s First Smelt Spout Robot Elevates Safety, Productivity, Paper360º March/April 2024

TAPPI Journal Summaries, Paper360º March/April 2024

Trends in China’s Pulp, Paper, and Forestry Industry, Paper360º March/April 2024

Highest Paper Quality Right from the Start, Paper360º May/June 2024