Inventory audit notice: TAPPI Press orders will not be processed from August 21–28 during our fiscal year-end inventory audit. Orders placed during this time will ship starting August 31, in the order received. Normal payment processing also resumes August 31.

Thanks for your patience — this helps us serve our members better.

Search

Use the search bar or filters below to find any TAPPI product or publication.

Showing 511–520 of 564 results (Duration : 0.008 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Collections

Journal articles
Magazine articles
Open Access
Techno-economic analysis of hydrothermal carbonization of pulp mill biosludge, TAPPI Journal March 2023

ABSTRACT: For many mills, the biosludge from wastewater treatment is difficult to recycle or dispose of. This makes it a challenging side stream and an important issue for chemical pulping. It often ends up being burned in the recovery or biomass boiler, although the moisture and non-process element (NPE) contents make it a problematic fuel. Biosludge has proven resistant to attempts to reduce its moisture. When incinerated in the biomass boiler, the heat from dry matter combustion is often insufficient to yield positive net heat. Mixing the sludge with black liquor in the evaporator plant for incineration in the recovery boiler is more energy efficient, but is still an additional load on the evaporator plant, as well as introducing NPEs to the liquor. In this study, treating the biosludge by hydrother-mal carbonization (HTC), a mild thermochemical conversion technology, is investigated. The HTC process has some notable advantages for biosludge treatment; taking place in water, it is well suited for sludge, and the hydrochar product is much easier to dewater than untreated sludge. In this study, two HTC plant designs are simulated using IPSEpro process simulation software, followed by economic analysis. Low temperature levels are used to minimize investment costs and steam consumption. The results show that if the sludge is incinerated in a biomass boiler, payback periods could be short at likely electricity prices. The HTC treatment before mixing the sludge with black liquor in the evaporator plant is profitable only if the freed evaporator capacity can be used to increase the firing liquor dry solids content.

Journal articles
Open Access
Maximization of profit through optimal selection of inventory levels and production rates in pulp and paper mills, TAPPI JOURNAL, July 2003, Vol. 2(7) (166KB)

Maximization of profit through optimal selection of inventory levels and production rates in pulp and paper mills, Solutions! & TAPPI JOURNAL, July 2003, Vol. 2(7) (166KB)

Journal articles
Open Access
Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Journal articles
Open Access
A review of gas flows in fiber suspensions, TAPPI JOURNAL, Online Exclusive, November 2003, Vol. 2(11) (775KB)

A review of gas flows in fiber suspensions, TAPPI JOURNAL, Online Exclusive, November 2003, Vol. 2(11) (775KB)

Journal articles
Open Access
3-D Computational Simulation of Paper Handsheet Structure and Prediction of Apparent Density, TAPPI JOURNAL September 2009

3-D Computational Simulation of Paper Handsheet Structure and Prediction of Apparent Density, TAPPI JOURNAL September 2009

Journal articles
Open Access
Decreasing specific energy of thermomechanical pulps from reduction of raw materials variability, TAPPI JOURNAL September 2009

Decreasing specific energy of thermomechanical pulps from reduction of raw materials variability, TAPPI JOURNAL September 2009

Journal articles
Open Access
Retention of PCC and GCC Fillers on Chemical Pulp Fines Surfaces, TAPPI JOURNAL September 2009

Retention of PCC and GCC Fillers on Chemical Pulp Fines Surfaces, TAPPI JOURNAL September 2009

Journal articles
Open Access
Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, TAPPI JOURNAl, July 2008

Kraft pulping and papermaking properties of hot-water pre-extracted loblolly pine in an integrated forest products biorefinery, TAPPI JOURNAl, July 2008

Journal articles
Open Access
Multistage fiber fractionation of softwood chemical pulp through smooth-hole screen cylinders and its effects on paper properties 15APR259

Multistage fiber fractionation of softwood chemical pulp through smooth-hole screen cylinders and its effects on paper properties, TAPPI JOURNAL April 2015

Journal articles
Open Access
Editorial: TJ editorial board members review 2013 PEERS, IBBC and Research Forum on Recycling, TAPPI JOURNAL September 2013

Editorial: TJ editorial board members review 2013 PEERS, IBBC and Research Forum on Recycling, TAPPI JOURNAL September 2013

Inside this Section