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Journal articles
Magazine articles
Open Access
Quantification of vegetable oil in recycled paper, TAPPI JOURNAL September 2020

ABSTRACT: Vegetable soybean oil is commonly used in cooking foods that are packaged in takeaway paper-board containers. Vegetable oil is hydrophobic, and in sufficiently high concentration, could interfere with interfiber bonding and result in paper strength loss. In order to quantify the effect of oil on the resulting paperboard strength, it is necessary to quantify the oil content in paper. A lab method was evaluated to determine the soybean oil content in paper. Handsheets were made with pulps previously treated with different proportions of vegetable oil. Pyrolysis gas chromatography-mass spectrometry (pyGCMS) was used to quantify the amount of oil left in the handsheets. The results revealed a strong correlation between the amount of oil applied to the initial pulp and the amount of oil left in the handsheets.In addition, the effect of vegetable oils on paper strength may be affected by the cooking process. Vegetable oil is known to degrade over time in the presence of oxygen, light, and temperature. The vegetable oil was put in an oven to imitate the oil lifecycle during a typical pizza cooking process. The cooked oil was then left at room temperature and not protected from air (oxygen) or from normal daylight. The heated, then cooled, oil was stored over a period of 13 weeks. During this time, samples of the aged oil were tested as part of a time-based degradation study of the cooked and cooled oil.

Journal articles
Open Access
Conference review: Recycling sessions at TAPPI PEERS, TAPPI JOURNAL February 2012

Conference review: Recycling sessions at TAPPI PEERS, TAPPI JOURNAL February 2012

Journal articles
Open Access
Variation of white water composition in a tmp and dip newsprint paper machine, TAPPI JOURNAL, August 1997, Vol. 80(8)

Variation of white water composition in a tmp and dip newsprint paper machine, TAPPI JOURNAL, August 1997, Vol. 80(8)

Journal articles
Open Access
Some fundamental aspects of wood chipping, TAPPI JOURNAL, October 1995, Vol. 78(10)

Some fundamental aspects of wood chipping, TAPPI JOURNAL, October 1995, Vol. 78(10)

Journal articles
Open Access
Steam drying and fluidized-bed calcination of lime mudâ??results of extended pilot studies, TAPPI JOURNAL, September 1995, Vol. 78(9)

Steam drying and fluidized-bed calcination of lime mud—results of extended pilot studies, TAPPI JOURNAL, September 1995, Vol. 78(9)

Journal articles
Open Access
Laboratory kraft pulping of juvenile tropical pines: pinus patula, p. tecunumanii, p. maximinoi, and p. chiapensis, TAPPI JOURNAL, April 1996, Vol. 79(4)

Laboratory kraft pulping of juvenile tropical pines: pinus patula, p. tecunumanii, p. maximinoi, and p. chiapensis, TAPPI JOURNAL, April 1996, Vol. 79(4)

Journal articles
Open Access
The effect of pulp fiber properties on the tearing work of paper, TAPPI JOURNAL, April 1996, Vol. 79(4)

The effect of pulp fiber properties on the tearing work of paper, TAPPI JOURNAL, April 1996, Vol. 79(4)

Journal articles
Open Access
Improvements in ecf bleaching: use of activated oxygen species and xylanase, TAPPI JOURNAL, April 1996, Vol. 79(4)

Improvements in ecf bleaching: use of activated oxygen species and xylanase, TAPPI JOURNAL, April 1996, Vol. 79(4)

Journal articles
Open Access
Method and sample-related problems in the determination of aox in effluents, TAPPI JOURNAL, August 1996, Vol.79(8)

Method and sample-related problems in the determination of aox in effluents, TAPPI JOURNAL, August 1996, Vol.79(8)

Journal articles
Open Access
1995 TAPPI salary survey, TAPPI JOURNAL, August 1996, Vol.79(8)

1995 TAPPI salary survey, TAPPI JOURNAL, August 1996, Vol.79(8)

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