Results 51 to 60 of about 3,990 (212)
Sulfuric acid bleaching of kraft pulp 1: Bleaching of hardwood and softwood kraft pulps
Journal of Wood Science, 1999 To develop a new nonchlorine bleaching technology, hardwood and softwood kraft pulps, before and after oxygen-alkali predelignification, were treated with dilute sulfuric acid solutions (pH 1.0-1.8) at 100°C for 1 h and then extracted with aqueous sodium hydroxide at 70°C for l h. Hardwood kraft pulp was successfully bleached.
Tsutomu Ikeda +4 more
openaire +1 more source
The Canadian Journal of Chemical Engineering, Volume 104, Issue 8, Page 3984-3995, August 2026.Sodium alginate was modified with EDC/NHS for the immobilization of Yacon peel peroxidase, resulting in a novel biocatalyst for the oxidation of 2,4‐dichlorophenol. Abstract Yacon (Smallanthus sonchifolius) roots are emerging as an alternative source of peroxidase. This study aimed to extract, immobilize, and characterize the peroxidase from Yacon peel,
Mariana Gomes Oliveira +4 more
wiley +1 more source
Research on silicon removal with oxides addition in kraft pulping of bamboo [PDF]
, 2011 High silica content of bamboo results in a silica problem during the chemical recovery process. The lime mud of bamboo cannot be reused after the causticization process due to its high silica content. Therefore, it was discharged as solid waste. To solve
Li, P, Song, S, Zhang, M, Zhao, L
core
Nitric Acid-Alkali Two-stage Pulping of Wheat Straw, Industrial Hemp, and Miscanthus x giganteus
BioResources, 2023 Index levels of the process of pulping wheat straw (WS), industrial hemp stalks (HS), and Miscanthus x giganteus (MS) using the nitric acid-alkali (NA-A) method (HNO3/KOH and HNO3/NH4OH two-stage sequential delignification systems) were determined.
Dariusz Danielewicz
doaj +2 more sources
Batteries From Reused, Recycled, and Surplus Materials
Advanced Sustainable Systems, Volume 10, Issue 7, July 2026.Batteries can become more circular by combining reuse, direct recycling, metallurgical recovery, and material sourcing from industrial surplus streams. This Review highlights how recycled and waste‐derived metals, carbons, polymers, electrolytes, and active materials can be reintegrated into current and emerging batteries, while emphasizing design ...
Jing Yu +16 more
wiley +1 more source
Soda pulping with additives and Kraft pulping kinetics [PDF]
, 2014 O método de polpação química Kraft é o mais utilizado mundialmente para produção de celulose, por suas características favoráveis como alta qualidade do papel produzido.
Almeida, Diego Pierre de
core +1 more source
Evaluation of bleachability on pine and eucalyptus kraft pulps [PDF]
CERNE, 2013 In recent decades, the pulp industry has been changing and improving its manufacturing processes in order to enhance production capacity, product quality and environmental performance. The aim of this study was to evaluate the bleachability effect on the efficient washing and alkaline leaching in eucalyptus and pine Kraft pulps using three different ...
Andrade, Marcela Freitas +2 more
openaire +4 more sources
ChemSusChem, Volume 19, Issue 11, 15 June 2026.Using the Ioncell process, the recycling of low DP textile waste via four case studies, white, blue, and black viscose and white modal fibers, was investigated. The most common man‐made cellulose fiber (MMCF) is viscose, a low DP material made of plant‐based cellulose, and it accounts for less than 6% of the total amount of textile fibers.
Inge Schlapp‐Hackl +11 more
wiley +1 more source
Dry Kraft Pulping at Ambient Pressure for Cost Effective Energy Saving and Pollution Deduction [PDF]
, 2012 Sponsored by the DOE Industrial Energy Efficiency Grand Challenge program, our research team at the Georgia Institute of Technology conducted laboratory studies and confirmed the concept of making wood pulp using a dry pulping technology. This technology
Deng, Yulin, Ragauskas, Art
core +1 more source
An heterogeneous model for eucalyptus kraft pulping. [PDF]
, 1988 Nas indústrias de celulose, o processo dominante é a polpação Kraft. A polpação ou o cozimento de madeira em digestores constitui a operação central da produção de celulose, onde se processam as reações de deslignificação dos cavacos de madeira. Em geral,
Song Won Park
core +3 more sources