scholarly journals Effect of carbon-based materials and CeO2 on Ni catalysts for Kraft lignin liquefaction in supercritical water

2018 ◽  
Vol 20 (18) ◽  
pp. 4308-4318 ◽  
Author(s):  
Aderlanio Cardoso ◽  
Tomas Ramirez Reina ◽  
Isabel Suelves ◽  
José Luis Pinilla ◽  
Marcos Millan ◽  
...  
Keyword(s):  
Power Generation ◽  
Supercritical Water ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Kraft Lignin ◽  
Pulp And Paper ◽  
Ni Catalysts ◽  
Cellulose Production ◽  
Carbon Based

Kraft lignin (KL) is a by-product from cellulose production typically treated as a waste or used as a low-value fuel in heat and power generation in the pulp and paper industry.

scholarly journals Polyurethane Synthesis from Sugarcane Bagasse Organosolv and Kraft Lignin

2015 ◽  
Vol 659 ◽  
pp. 527-532 ◽  
Author(s):  
Chularat Sakdaronnarong ◽  
Nattawee Srimarut ◽  
Navadol Laosiripojana
Keyword(s):  
Sodium Hydroxide ◽  
Sugarcane Bagasse ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Kraft Lignin ◽  
Single Step ◽  
Pulp And Paper ◽  
Hydrolysis Reaction ◽  
Hydroxyl Groups ◽  
Organosolv Lignin

Sugarcane bagasse (SCB) was subjected to a single-step fractionation and hydrolysis reaction in the presence of various organic solvents. The reaction was performed at 170 °C for 3 h when sodium hydroxide was used as catalyst. The results showed that suitable solvents significantly enhanced the yield of lignin fractionation and simultaneous hydrolysis reaction took place indicated by an increase of hydroxyl groups in lignin molecules. Lignin-based polyurethane (LPU) from SCB organosolv lignin polyols had relatively better mechanical and thermal resistant properties compared to LPU from liquefied Kraft lignin from pulp and paper industry.

scholarly journals Lignin-Depolymerisation via UV-Photolysis and Titanium Dioxide Photocatalysis

2017 ◽  
Author(s):  
Xuan Tung Do ◽  
Basma El Khaldi-Hansen ◽  
Anke Nietsch ◽  
Christian Jung ◽  
Steffen Witzleben ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Chemical Synthesis ◽  
Paper Industry ◽  
Black Liquor ◽  
Pulp And Paper Industry ◽  
Kraft Lignin ◽  
Pulp And Paper ◽  
Titanium Dioxide Photocatalysis ◽  
Irradiation Period ◽  
Over Time

Today, more than 70 million tons of lignin are produced by the pulp and paper industry every year. However, the utilization of lignin as a source for chemical synthesis is still limited due to the complex and heterogeneous lignin structure. The purpose of this study was a selective photodegradation of industrially available kraft lignin in order to obtain appropriate fragments and building block chemicals for further utilization, e.g. polymerization. Thus, kraft lignin obtained from soft wood black liquor by acidification was dissolved in sodium hydroxide and irradiated at a wavelength of 254 nm with and without the presence of titanium dioxide in various concentrations. Analyses of the irradiated products via SEC showed decreasing molar masses and decreasing polydispersity indices over time. At the end of the irradiation period the lignin was depolymerised to form fragments as small as the lignin monomers. TOC analyses showed minimal mineralisation due to the depolymerisation process.

scholarly journals Bioconversion of oxygen-pretreated Kraft lignin to microbial lipid with oleaginous Rhodococcus opacus DSM 1069

2015 ◽  
Vol 17 (5) ◽  
pp. 2784-2789 ◽  
Author(s):  
Zhen Wei ◽  
Guangming Zeng ◽  
Fang Huang ◽  
Matyas Kosa ◽  
Danlian Huang ◽  
...  
Keyword(s):  
Paper Industry ◽  
Black Liquor ◽  
Pulp And Paper Industry ◽  
Kraft Lignin ◽  
Pulp And Paper ◽  
Rhodococcus Opacus ◽  
Microbial Lipid ◽  
New Applications

Kraft lignin (KL) from black liquor is an abundantly available, inexpensive aromatic resource that is regarded as a low value compound by the pulp and paper industry, necessitating the development of new applications.

Co-cooking nonwoods with hardwoods

TAPPI Journal ◽  
2014 ◽  
Vol 13 (6) ◽  
pp. 19-24
Author(s):  
TROY RUNGE ◽  
CHUNHUI ZHANG
Keyword(s):  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Strength Properties ◽  
Agricultural Residues ◽  
Kraft Pulping ◽  
Pulp And Paper ◽  
Strength Increase ◽  
Xylan Content

Agricultural residues and energy crops are promising resources that can be utilized in the pulp and paper industry. This study examines the potential of co-cooking nonwood materials with hardwoods as means to incorporate nonwood material into a paper furnish. Specifically, miscanthus, switchgrass, and corn stover were substituted for poplar hardwood chips in the amounts of 10 wt %, 20 wt %, and 30 wt %, and the blends were subjected to kraft pulping experiments. The pulps were then bleached with an OD(EP)D sequence and then refined and formed into handsheets to characterize their physical properties. Surprisingly, all three co-cooked pulps showed improved strength properties (up to 35%). Sugar measurement of the pulps by high-performance liquid chromatography suggested that the strength increase correlated with enriched xylan content.

Application of VSEP for Pulp and Paper Industry.

1999 ◽  
Vol 53 (10) ◽  
pp. 1334-1338 ◽  
Author(s):  
Yoshiya Kuide ◽  
Kazuyoshi Yamamoto
Keyword(s):  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Pulp And Paper
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