Fungi and Their Enzymes for Pitch Control in the Pulp and Paper Industry

Gutiérrez, Ana; Río, José C. del; Martínez, Ángel T.

doi:10.1007/978-3-642-11458-8_17

Cited by 6 publications

(3 citation statements)

References 94 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Traditional methods for the control of pitch include seasoning and the addition of chemicals [20] . The biotechnological approach of using enzymes for pitch control is an alternative choice, especially for removal of glycerides.…”

Section: Introductionmentioning

confidence: 99%

Identification of lipolytic enzymes isolated from bacteria indigenous to Eucalyptus wood species for application in the pulping industry

Ramnath

Sithole

Govinden

2017

Biotechnology Reports

View full text Add to dashboard Buy / Rent full text

show abstract

Section: Introductionmentioning

confidence: 99%

Identification of lipolytic enzymes isolated from bacteria indigenous to Eucalyptus wood species for application in the pulping industry

Ramnath

Sithole

Govinden

2017

Biotechnology Reports

View full text Add to dashboard Buy / Rent full text

show abstract

“…Pitch also sticks to different parts of the papermaking machines and stains the felts and canvas, even leading to major failures like web breaks of the machine [76]. Hence, pitch deposition originating from wood extractives is responsible for reduced production levels, higher operating costs, and higher equipment maintenance costs of papermaking processes [77]. In Kraft pulp mills, economic losses due to pitch problems are assumed to account for 1-2% of sales [78].…”

Section: Effects On Pulp and Paper Quality And Productionmentioning

confidence: 99%

Removal of wood extractives as pulp (pre-)treatment: a technological review

Lehr¹,

Miltner²,

Friedl³

2021

SN Appl. Sci.

View full text Add to dashboard Buy / Rent full text

Wood extractives usually do not exceed five percent of dry wood mass but can be a serious issue for pulping as well as for the pulp itself. They cause contamination and damages to process equipment and negatively influence pulp quality. This paper addresses not only the extractives-related problems but also different solutions for these issues. It is an extensive review of different technologies for removing wood extractives, starting with methods prior to pulping. Several wood yard operations like debarking, knot separation, and wood seasoning are known to significantly decreasing the amount of wood extractives. Biological treatment has also been proven as a feasible method for reducing the extractives content before pulping, but quite hard to handle. During pulping, the extractives reduction efficiency depends on the pulping method. Mechanical pulping removes the accessory compounds of wood just slightly, but chemical pulping, on the other hand, removes them to a large extent. Organosolv pulping even allows almost complete removal of wood extractives. The residual extractives content can be significantly reduced by pulp bleaching. Nevertheless, different extraction-based methods have been developed for removing wood extractives before pulping or bleaching. They range from organic-solvent-based extractions to novel processes like supercritical fluid extractions, ionic liquids extractions, microwave technology, and ultrasonic-assisted extraction. Although these methods deliver promising results and allow utilization of wood extractives in most cases, they suffer from many drawbacks towards an economically viable industrial-scale design, concluding that further research has to be done on these topics. Graphical abstract

show abstract

“…The dissolved air flotation (DAF) system was used to overcome pitch disturbances and improve pulp quality . In addition, handling pitch by various enzymes − was frequently reported. However, the above-listed methods of pitch control were all disposable because the materials used cannot be recycled.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Abietic Acid from Colloidal Suspension by Calcined Mg/Al Hydrotalcite Compounds

Yang

Song

Qian

2013

Ind. Eng. Chem. Res.

View full text Add to dashboard Buy / Rent full text

Resin acids are major constituents of wood extractives and are known to cause a range of paper manufacturing problems including pitch deposition, poor paper machine runnability, and low paper quality. Abietic acid (AA) is one of major constituents of resin acids. Removing AA from colloidal suspension using calcined Mg/Al hydrotalcites (CHTs) was investigated in this study. The removal percentage of AA at the pH value of 6.8 was larger than those at the pH values of 7.8–9.8 and the adsorption capacity was 434.78 mg/g at 323 K. Kinetic data were followed pseudo-second-order kinetic model and adsorption followed the Langmuir isotherm. Adsorption process proceeded by physical adsorption. About 80% of the equilibrium adsorption capacity of the original CHT was achieved after five use cycles. The calcined Mg/Al hydrotalcites exhibited high adsorption capacity for AA and were efficient adsorbents for dissolved and colloidal substances (DCS) in papermaking process.

show abstract

Fungi and Their Enzymes for Pitch Control in the Pulp and Paper Industry

Cited by 6 publications

References 94 publications

Identification of lipolytic enzymes isolated from bacteria indigenous to Eucalyptus wood species for application in the pulping industry

Identification of lipolytic enzymes isolated from bacteria indigenous to Eucalyptus wood species for application in the pulping industry

Removal of wood extractives as pulp (pre-)treatment: a technological review

Adsorption of Abietic Acid from Colloidal Suspension by Calcined Mg/Al Hydrotalcite Compounds

Contact Info

Product

Resources

About