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Considerations in managing wastewater odor at pulp and paper operations, TAPPI Journal March 2022

ABSTRACT: Many pulp and paper mills are, at least periodically, faced with the release of odors that can migrate offsite and be considered a nuisance by nearby residents. At chemical pulp mills, perceptible odors associated with reduced sulfur compounds (RSCs) are common, many of which are highly perceptible owing to their low odor thresholds. As releases of RSCs and other odorous substances from production processes are progressively controlled, the proportional contribution from wastewater treatment systems to areal odors can increase. This review paper summarizes important fundamentals of odor generation, source identification, and control. Common odorous substances are identified, and mechanisms for their generation are summarized. Approaches for measuring odorous substances are detailed to enable more effective management, and various odor control strategies are discussed.

Rise of the Machines, Paper360º March/April 2022

Rise of the Machines, Paper360º March/April 2022

TAPPI Journal Summaries, Paper360º May/June 2022

Textiles: A New Door of Opportunity Opens, Paper360º November/December 2022

Utilization of palm fiber as papermaking materials: Microscopic structure and chemical pulping, TAPPI Journal October 2022

ABSTRACT: The microscopic structure and pulping properties of palm fiber were explored. Soda cooking and sulfate cooking were conducted and compared in terms of physical strength of the obtained pulps. Sulfate pulp showed better performance than soda pulp, as indicated by the 23% higher tensile index, 49% higher tear index, and 36% higher burst index. To further elevate physical strength, long fibered pulp (LFP), namely commercial softwood sulfate pulp, was mixed with sulfate pulp of palm fiber at levels from 20% to 50%. At the blend level of 50%, tensile index of 52.13 Nœm/g, tear index of 15.63 mNœm2/g, and burst index of 3.42 kPaœm2/g were attained. The lignin in spent liquor from pulping was isolated and characterized. Soda lignin of palm fiber was mainly composed of guaiacyl and syringyl units, and showed weight-average molecular weight of 3616 g/mol.

Small diameter trees used for thermomechanical pulps, TAPPI JOURNAL, October 1999, Vol. 82(10)

Small diameter trees used for thermomechanical pulps, TAPPI JOURNAL, October 1999, Vol. 82(10)

Rapid prediction of effluent biochemical oxygen demand for improved environmental control, TAPPI JOURNAL, October 1999, Vol. 82(10)

Rapid prediction of effluent biochemical oxygen demand for improved environmental control, TAPPI JOURNAL, October 1999, Vol. 82(10)

Paprican's process for polysulfide liquor production in kraft mill causticizers, part 1: batch trials and process optimization, TAPPI JOURNAL, October 1999, Vol. 82(10)

Paprican's process for polysulfide liquor production in kraft mill causticizers, part 1: batch trials and process optimization, TAPPI JOURNAL, October 1999, Vol. 82(10)

Trends in sweden for closed cycle recovery of tcf bleach filtrates in integrated kraft pulp production, TAPPI JOURNAL, October 1999, Vol. 82(10)

Trends in sweden for closed cycle recovery of tcf bleach filtrates in integrated kraft pulp production, TAPPI JOURNAL, October 1999, Vol. 82(10)

Chlorine dioxide bleaching of single species samples of three hardwood kraft pulps: oak, maple and gum, TAPPI JOURNAL, October 1999, Vol. 82(10)

Chlorine dioxide bleaching of single species samples of three hardwood kraft pulps: oak, maple and gum, TAPPI JOURNAL, October 1999, Vol. 82(10)