Paper360 - January/February 2018 - 30

techlink | INSIDE
W W W. TA P P I .

ORG

JOURNAL

TECHNIC
ING INDUSTR IES'
THE PAPER AND PACKAG

AL RESOUR CE

VOL. 16 NO.9
SEPTEMBER 2017 |

W W W. TA P P I .

ORG

JOURNAL

495 ING INDUSTR IES' TECHNIC AL
ERY PAPER AND PACKAG
BIOREFINTHE

Addition of corn stover
d
arabinoxylan into hardwoo
during pulping for improved
physical properties
Anurag Mandalika and

O. Luettgen,
Thomas T. Kwok, Christopher S.
Andreas
Matthew J. Realff, and
Bommarius

507

NT 559
WASTEWATER TREATME

Degradation of 2,4-dichlorophenol
by melamine amine cellulose
immobilized lacasses

Raman,
Praveen Kumar Yegya
Ramkumar
Akshay Jain, and Seshadri

Bin, Ying Liu, Yu Liu,
Zhen Wang, Pingping
Lucia
Guihua Yang, and Lucian

519

PAPERMAKING

Three-dimensional pore
structure visualization and
characterization of paper using
hy
X-ray computed tomograp

567

PAPERMAKING

Effect of conductivity on
paper and board machine
performance-a review and
new experiences

Yves Defrenne, Vasili Zhdankin,
Ramaswamy,
Sahana Ramanna, Shri
and Bandaru V. Ramarao

Lebo Xu, Przemyslaw
and Peter W. Hart

535

t
Effect of surface treatmen
with biodegradable materials
on properties of linerboard
made from old corrugated
containers (OCC)
Somayeh Heydari, Ahmad
and Alireza Shakeri

553

Lignin value prior to pulping
(LVPP): An advanced pulping
concept

n
Oil absorption and desorptio
by polypropylene fibers

RECYCLING

16 NO.10
OCTOBER 2017 | VOL.

SPECIAL FEATURE

Troy M. Runge

NONWOVENS

RESOUR CE

E. Pruszynski,

583

BLEACHING

Techno-economic analysis
of ECF bleaching and TCF
bleaching for a bleached
eucalyptus kraft pulp mill

Reza Saraeyan,

Perrin, Hasan Jameel,
Tiago de Assis, Jordan
Lachenal,
Richard Phillips, Dominique
Ronalds Gonzalez
Adrianna Kirkman, and

597

RECOVERY CYCLE

Formation mechanisms
of "jellyroll" smelt in kraft
recovery boilers
Honghi Tran and Andrew

K. Jones

TJ SUMMARIES
The papers summarized here are from the September and
October 2017 issues of TAPPI Journal. TAPPI Journal is an online
publication of relevant and timely peer-reviewed research delivered via
email and free to all TAPPI members. To receive TAPPI Journal, join
TAPPI at www.tappi.org.
 SEPTEMBER
PAPERMAKING
Three-dimensional pore structure visualization and
characterization of paper using x-ray computed tomography
Yves Defrenne, Vasili Zhdankin, Sahana Ramanna,
Shri Ramaswamy, and Bandaru V. Ramarao
A 3D characterization
of the pore size
distribution was
achieved using a
sphere-growing
algorithm. (Cross
section of the
processed image
before (l) and after (r)
fitting spheres.)

Porous biomaterials such as paper and board have a complex structure that influences their mechanical, optical, and transport properties
and thereby their performance during manufacturing and end uses.
Reconstruction of the three-dimensional (3D) pore spaces in paper
was obtained by X-ray computed tomography and used to study the
structure and its impact on properties. A set of laboratory-made paper
samples of varying freeness was prepared, and the 3D structures of
the samples were visualized and characterized. Tomographic reconstruction images were processed using techniques such as anisotropic
diffusion, minimum error thresholding, and isolated voxel removal
to enhance image quality.
The pore structures were analyzed to determine porosity, fiberpore interfacial surface area, geometric tortuosity, and pore size
30

Paper360º

JANUARY/FEBRUARY 2018

distributions (using a sphere growing algorithm). These properties
were compared with experimental data and were found to be in good
agreement. Researchers then compared results from 3D visualization
and characterization with experimental data of various samples using
conventional pore structure characterization techniques, such as
mercury intrusion porosimetry.
This study showed how image processing techniques can help mills
better understand the complex structure of porous biomaterials that
influences properties and performance of manufactured products.
NONWOVENS
Oil absorption and desorption by polypropylene fibers
Praveen Kumar Yegya Raman,
Akshay Jain, and Seshadri Ramkumar
For the oil sorption
study, researchers
used a modified
ASTM F726-12 test
with non-detergent
motor oil and
polypropylene fibers.

Oil spill is a threat to the ecosystem, and there is a need to develop
highly efficient oil sorbents for environmental remediation. In this
study, researchers evaluated four different types of polypropylene
fibers for their oil absorbency and desorption characteristics. These
fibers varied in their fineness and structural characteristics, i.e., hollow or solid. The study used a modified ASTM methodology to better
represent the oil sorption capacity of a sorbent.
To the best of our knowledge, this is the first study to present the
effect of fiber fineness and structure on the oil desorption behavior
of polypropylene fibers. Results showed that finer fibers had higher
oil sorption capacity (g/g) than the coarser fibers. There was no
statistical difference in the rate of desorption among the solid fibers;
however, the hollow fiber had a statistically higher rate of desorption
than the solid fibers.
This study will help with the development of efficient sorbents
that will have high oil sorption capacity and ease of transportation.
BIOREFINERY
Addition of corn stover arabinoxylan into hardwood
during pulping for improved physical properties
Anurag Mandalika and Troy M. Runge
Agricultural residues such as corn stover are being considered for
biofuels and bioproducts. They represent inexpensive, pentosan-rich
feedstocks that are abundantly available. These materials are typically
pretreated to make them more amenable to biological processes such
as fermentation. One such treatment involves extraction using alkali
to remove the hemicellulose, leaving the cellulose more accessible for
chemical or enzymatic hydrolysis. Extracted xylan hemicellulose may be
considered for use in pulp and paper, or for providing a potential value
stream from cellulosic ethanol biorefineries. To be useful, the extracted
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Table of Contents for the Digital Edition of Paper360 - January/February 2018

Setpoint
Over the Wire
On the Journey to Injury-Free
2018 Outlook
Welcome to Scappoose
A Novel Synthetic Adsorbent for Pitch Control
TAPPI Journal Summaries
A New Resource for R&M Professionals
Reliability Interview: Steven Mjoen, Catalyst Paper
Leadership in Reliability & Maintenance
Global Trade and the Pulp and Paper Industry
TAPPI News
ASPI News
Advertisers’ Index
Paper360 - January/February 2018 - Intro
Paper360 - January/February 2018 - cover1
Paper360 - January/February 2018 - cover2
Paper360 - January/February 2018 - 3
Paper360 - January/February 2018 - 4
Paper360 - January/February 2018 - 5
Paper360 - January/February 2018 - Setpoint
Paper360 - January/February 2018 - 7
Paper360 - January/February 2018 - Over the Wire
Paper360 - January/February 2018 - 9
Paper360 - January/February 2018 - On the Journey to Injury-Free
Paper360 - January/February 2018 - 11
Paper360 - January/February 2018 - 12
Paper360 - January/February 2018 - 13
Paper360 - January/February 2018 - 2018 Outlook
Paper360 - January/February 2018 - 15
Paper360 - January/February 2018 - 16
Paper360 - January/February 2018 - 17
Paper360 - January/February 2018 - Welcome to Scappoose
Paper360 - January/February 2018 - 19
Paper360 - January/February 2018 - insert1
Paper360 - January/February 2018 - insert2
Paper360 - January/February 2018 - 20
Paper360 - January/February 2018 - 21
Paper360 - January/February 2018 - 22
Paper360 - January/February 2018 - 23
Paper360 - January/February 2018 - 24
Paper360 - January/February 2018 - 25
Paper360 - January/February 2018 - A Novel Synthetic Adsorbent for Pitch Control
Paper360 - January/February 2018 - 27
Paper360 - January/February 2018 - 28
Paper360 - January/February 2018 - 29
Paper360 - January/February 2018 - TAPPI Journal Summaries
Paper360 - January/February 2018 - 31
Paper360 - January/February 2018 - 32
Paper360 - January/February 2018 - Reliability Interview: Steven Mjoen, Catalyst Paper
Paper360 - January/February 2018 - Leadership in Reliability & Maintenance
Paper360 - January/February 2018 - insert3
Paper360 - January/February 2018 - insert4
Paper360 - January/February 2018 - 35
Paper360 - January/February 2018 - 36
Paper360 - January/February 2018 - Global Trade and the Pulp and Paper Industry
Paper360 - January/February 2018 - 38
Paper360 - January/February 2018 - 39
Paper360 - January/February 2018 - 40
Paper360 - January/February 2018 - 41
Paper360 - January/February 2018 - 42
Paper360 - January/February 2018 - TAPPI News
Paper360 - January/February 2018 - 44
Paper360 - January/February 2018 - ASPI News
Paper360 - January/February 2018 - Advertisers’ Index
Paper360 - January/February 2018 - cover3
Paper360 - January/February 2018 - cover4
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