Results 61 to 70 of about 1,867 (190)

Effect of H2O2 bleaching with ultrasonication on the properties of thermomechanical pulp and unbleached kraft pulp

Ultrasonics Sonochemistry, 2015
Abstract H2O2 was used in the final stage of a multistage bleaching process to increase ISO brightness by 2–3%, because of the poor selectivity and bleachability. However, concerns about the environmental load of the bleaching process have led to the efficient use of oxygen-derived compounds, with a concomitant decrease in the quantity of chlorine ...
Jin-Ho Seo, Hyoung-Jin Kim
openaire   +2 more sources

DUAL-POLYELECTROLYTE ADSORPTION OF POLY(ALLYLAMINE HYDROCHLORIDE) AND XYLAN ONTO RECYCLED UNBLEACHED KRAFT PULPS

BioResources, 2012
The effects of a double polyelectrolyte adsorption of poly(allylamine hydrochloride) (PAH) and xylan (Xyl) on a recycled unbleached softwood kraft pulp were studied. The kinetics of PAH adsorption on this pulp was analyzed by building adsorption isotherms and by estimating the surface nitrogen adsorbed through the X-ray photoelectron spectroscopy (XPS)
Galván, María Verónica, Mocchiutti, Paulina, Cornaglia, Laura Maria, Zanuttini, Miguel Angel Mario   +3 more
openaire   +3 more sources

Understanding the potential of bamboo fibers in the USA: A comprehensive techno‐economic comparison of bamboo fiber production through mechanical and chemical processes

Biofuels, Bioproducts and Biorefining, Volume 18, Issue 5, Page 1565-1584, September/October 2024.
Abstract The growing interest in bamboo fibers for pulp, paper, and board production in the USA necessitates a comprehensive financial viability assessment. This study conducts a detailed technoeconomic analysis (TEA) of bamboo fiber production, primarily for the consumer hygiene tissue market although it is also applicable to other industrial uses ...
Keren A. Vivas, Alonzo Pifano, Ramon E. Vera, Fernando Urdaneta, Isabel Urdaneta, Naycari Forfora, Camilla Abbati de Assis, Richard B. Phillips, Sudipta Dasmohapatra, Daniel Saloni, Richard A. Venditti, Ronalds Gonzalez   +11 more
wiley   +1 more source

Effect of fungal pre-treatment of poplar chips on its paper brightness reversion [PDF]

Iranian Journal of Wood and Paper Industries, 2017
Unbleached Kraft pulp made from poplar chips, Pre-treated by Trametes versicolor in 1, 2 and 3 weeks (Bio-Kraft pulp), was used as raw material in this study.
Esmaeil Rasooly Garmaroody, hossein fooladi, seyed rahman Djafari Petroudy   +2 more
doaj  

STUDIES ON HIBISCUS CANNABINUS, HIBISCUS SABDARIFFA, AND CANNABINUS SATIVA PULP TO BE A SUBSTITUTE FOR SOFTWOOD PULP- PART 2: SAS-AQ AND NSSC-AQ DELIGNIFICATION PROCESSES [PDF]

, 2010
Hibiscus cannabinus, Cannabis sativa, and Hibiscus sabdariffa, fast growing productive annual plants, could provide fiber necessary to partially alleviate the world’s fiber deficit.
C. H. Tyagi, Dharm Dutt, J. S. Upadhyaya
core  

Biomass‐based functional separators for rechargeable batteries

Battery Energy, Volume 3, Issue 5, September 2024.
The global shift toward sustainable energy prompts innovation in energy storage. Biomass‐derived separators offer eco‐friendly alternatives to traditional polyolefin‐based separators, addressing environmental concerns. This review examines development, manufacturing, performance, and sustainability, highlighting biomass as a key resource for ...
Yongbo Xia, Lei Wang, Xiaoru Li, Tingting Liao, Jichao Zhai, Xiaohui Wang, Kaifu Huo   +6 more
wiley   +1 more source

DESORPTION OF METAL IONS FROM KRAFT PULPS. PART 1. CHELATION OF HARDWOOD AND SOFTWOOD KRAFT PULP WITH EDTA

BioResources, 2010
Chelation of unbleached and oxygen bleached hardwood and softwood kraft pulps with EDTA was studied. The main focus was on the desorption of magnesium, manganese, and iron due to their impact in TCF-bleaching.
Kim Granholm, Leo Harju, Ari Ivaska
doaj  

Pulping characteristics of three trees of Pinus caribaea with different densities grown in Jamaica [PDF]

, 1973
The pulping characteristics of three trees of Pinus caribaea var hondurensis with different densities grown in Jamaica were determined using the sulphate method.
Gibbs, J. A., Palmer, E. R.
core  

Conversion of WastePaper into Dissolving Pulp: A Path for Circular Bioeconomy

ChemistrySelect, Volume 9, Issue 30, August 12, 2024.
The potential of wastepaper to produce dissolving pulp was demonstrated in this article. By employing and optimizing chemical processes to wastepaper pulp, a noteworthy increase of 84 % in pulp Fock reactivity was achieved (from 45.6 % to 84.1 %). The pulp characteristics were followed throughout the different treatments allowing better understanding ...
Thalita P. Damaceno, André E. P. Cunha, Rogério M. S. Simões, Álvaro F. C. Vaz   +3 more
wiley   +1 more source

Hydrogen peroxide bleaching of cellulose pulps obtained from brewer’s spent grain [PDF]

, 2008
Brewer’s spent grain (BSG) was evaluated for bleached pulp production. Two cellulose pulps with different chemical compositionswere produced by soda pulping: one from the original raw material and the other from material pretreated by dilute acid ...
A Fortuny, A Tutus, AA Shatalov, BL Browning, C Chen, D Fengel, D Ye, DU Lima, F López, F López, George J. M. Rocha, HM Baudel, IA Weinstock, Inês C. Roberto, JD McMillan, L Lapierre, ML Bianchi, N Rahmawati, P Fardim, P Khristova, R Tanaka, RC Kuhad, RE Brooks, S Abrantes, SI Mussatto, SI Mussatto, SI Mussatto, Solange I. Mussatto, THM Vu, TM Grace, VS Mishra   +30 more
core   +1 more source