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Editorial: TAPPI Journal 2019 Best Research Paper addresses hard scale formation in green liquor pipelines, TAPPI Journal March 2020

ABSTRACT: TAPPI and the TAPPI Journal (TJ) Editorial Board would like congratulate the authors of the 2019 TAPPI Journal Best Research Paper Award: Alisha Giglio, Vladimiros Papangelakis, and Honghi Tran. Their paper, “The solubility of calcium carbonate in green liquor handling systems,” appeared on p. 595 of the October 2019 issue. This kraft recovery cycle research was recognized by the TJ Editorial Board for its innovation, creativity, scientific merit, and clear expression of ideas.

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Fate of phosphorus in the recovery cycle of the kraft pulping process, TAPPI Journal March 2020

ABSTRACT: The accumulation of nonprocess elements in the recovery cycle is a common problem for kraft pulp mills trying to reduce their water closure or to utilize biofuels in their lime kiln. Nonprocess elements such as magnesium (Mg), manganese (Mn), silicon (Si), aluminum (Al), and phosphorus (P) enter the recovery cycle via wood, make-up chemicals, lime rock, biofuels, and process water. The main purge point for these elements is green liquor dregs and lime mud. If not purged, these elements can cause operational problems for the mill. Phosphorus reacts with calcium oxide (CaO) in the lime during slaking; as a result, part of the lime is unavailable for slaking reactions. The first part of this project, through laboratory work, identified rhenanite (NaCa(PO4)) as the form of P in the lime cycle and showed the negative effect of P on the availability of the lime. The second part of this project involved field studies and performing a mass balance for P at a Canadian kraft pulp mill.

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Synthesis of filtrate reducer from biogas residue and its application in drilling fluid, TAPPI Journal March 2020

ABSTRACT: Biogas residues (BR) containing cellulose and lignin are produced with the rapid development of biogas engineering. BR can be used to prepare the filtrate reducer of water-based drilling fluid in oilfields by chemical modification. BR from anaerobically fermenting grain stillage was alkalized and etherified by caustic soda and chloroacetic acid to prepare filtrate reducer, which was named as FBR. The long-chain crystalline polysaccharides were selected as dispersing agents (DA), and the water-soluble silicate was used as the cross-linking agent. After the hot rolling of FBR in saturated saltwater base mud for 16 h at 120°C, the filtration loss was increased from 7.20 mL/30 min before aging to 8.80 mL/30 min after aging. Compared with the commercial filtrate reducers, FBR had better tolerance to high temperature and salt, and lower cost.

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Environmentally benign psas featured at recycling symposium, TAPPI JOURNAL, February 2000, Vol. 83(2)

Environmentally benign psas featured at recycling symposium, TAPPI JOURNAL, February 2000, Vol. 83(2)

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Influence of kraft pulping on the kinetics of oxygen delignification, TAPPI JOURNAL, February 2000, Vol. 83(2)

Influence of kraft pulping on the kinetics of oxygen delignification, TAPPI JOURNAL, February 2000, Vol. 83(2)

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Oxalic acid formation during ecf and tcf bleaching of kraft pulp, TAPPI JOURNAL, February 2000, Vol. 83(2)

Oxalic acid formation during ecf and tcf bleaching of kraft pulp, TAPPI JOURNAL, February 2000, Vol. 83(2)

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A laboratory study of occ flotation for removal of model stickie particles, TAPPI JOURNAL, July 2000, Vol. 83(7)

A laboratory study of occ flotation for removal of model stickie particles, TAPPI JOURNAL, July 2000, Vol. 83(7)

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A new method for calculating equilibrium solubility of burkeite and sodium carbonate in black liquor, TAPPI JOURNAL, July 2000, Vol. 83(7)

A new method for calculating equilibrium solubility of burkeite and sodium carbonate in black liquor, TAPPI JOURNAL, July 2000, Vol. 83(7)

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Addition of sodium silicate and chelant to the fas stage to bleach recycled fibers, TAPPI JOURNAL, July 2000, Vol. 83(7)

Addition of sodium silicate and chelant to the fas stage to bleach recycled fibers, TAPPI JOURNAL, July 2000, Vol. 83(7)

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Alkaline peroxide mechanical pulping of wheat straw part 1: factors influencing the brightness response in impregnation, TAPPI JOURNAL, July 2000, Vol. 83(7)

Alkaline peroxide mechanical pulping of wheat straw part 1: factors influencing the brightness response in impregnation, TAPPI JOURNAL, July 2000, Vol. 83(7)