Studies on the environmentally friendly deinking process employing biological enzymes and composite surfactant

Wang, Feng; Zhang, Xin; Zhang, Guoliang; Chen, Jie; Sang, Mingzhu; Long, Zhu; Wang, Bin

doi:10.1007/s10570-018-1778-3

Cited by 18 publications

(7 citation statements)

References 12 publications

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“…Cutinases could be used in this process, due to their ability to hydrolyze the ester bonds in natural/synthetic resins, and polyesters used in ink vehicles hydrolyze the triglycerides in vegetable oil-based inks and deacetylate polyvinyl acetate (PVAc), an adhesive that is used in paper-making and in synthetic toner or ink. Wang et al used biodegradable surfactants and compared the traditional chemical treatment with the enzymatic treatment of office wastepaper consisting of laser-printed and photocopied paper [134]. Alkaline treatment resulted in 92% ink removal and 90.5% ISO brightness.…”

Section: Other Bioremediation Applicationsmentioning

confidence: 99%

A Middle-Aged Enzyme Still in Its Prime: Recent Advances in the Field of Cutinases

et al. 2018

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Cutinases are α/β hydrolases, and their role in nature is the degradation of cutin. Such enzymes are usually produced by phytopathogenic microorganisms in order to penetrate their hosts. The first focused studies on cutinases started around 50 years ago. Since then, numerous cutinases have been isolated and characterized, aiming at the elucidation of their structure–function relations. Our deeper understanding of cutinases determines the applications by which they could be utilized; from food processing and detergents, to ester synthesis and polymerizations. However, cutinases are mainly efficient in the degradation of polyesters, a natural function. Therefore, these enzymes have been successfully applied for the biodegradation of plastics, as well as for the delicate superficial hydrolysis of polymeric materials prior to their functionalization. Even though research on this family of enzymes essentially began five decades ago, they are still involved in many reports; novel enzymes are being discovered, and new fields of applications arise, leading to numerous related publications per year. Perhaps the future of cutinases lies in their evolved descendants, such as polyesterases, and particularly PETases. The present article reviews the biochemical and structural characteristics of cutinases and cutinase-like hydrolases, and their applications in the field of bioremediation and biocatalysis.

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Section: Other Bioremediation Applicationsmentioning

confidence: 99%

A Middle-Aged Enzyme Still in Its Prime: Recent Advances in the Field of Cutinases

et al. 2018

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“…Paper industry is well known to consume enormous quantities of raw materials and energy. Paper recycling is more and more performed around the world to try to reduce the use of natural resources 1–3 . In order to recycle paper, de-inking has to be performed to improve the final color and overall quality of the recycled paper.…”

Section: Introductionmentioning

confidence: 99%

“…In order to recycle paper, de-inking has to be performed to improve the final color and overall quality of the recycled paper. Among the various de-inking methods, chemicals such as peroxides, caustic soda, and surfactants are commonly used 1,4 . The use of these chemicals leads to polluted water production and thus to costly waste water treatments 1–4 .…”

Section: Introductionmentioning

confidence: 99%

“…Among the various de-inking methods, chemicals such as peroxides, caustic soda, and surfactants are commonly used 1,4 . The use of these chemicals leads to polluted water production and thus to costly waste water treatments 1–4 . Alternative methods to either reduce the use of these chemicals or to replace these compounds have to be found 2–4 .…”

Section: Introductionmentioning

confidence: 99%

“…However, enzymes are extremely sensitive to the working conditions 4 . In addition, enzymes show limitations to remove hydrophilic inks such as inkjet and flexographic inks 1,4 . In order to provide a robust and easily up-scalable method to assist or enhance the current or newly developed de-inking processes, other ways have to be investigated.…”

Section: Introductionmentioning

confidence: 99%

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Improved de-inking of inkjet-printed paper using environmentally friendly atmospheric pressure low temperature plasma for paper recycling

Mauchauffé

Lee

Han

et al. 2019

Sci Rep

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Nowadays, due to environmental pollution and natural energy consumption caused by waste paper, many researches are being conducted on the reuse of printed-paper. To recycle the paper, de-inking has to be performed. In this article, in order to reduce the use of the commonly used de-inking chemicals, the effect of an atmospheric pressure helium plasma treatment on the de-inking enhancement of printed-paper is studied. Through colorimeter and UV-visible spectrometer measurements the plasma treatment is shown to speed up the de-inking. While SEM observations and FTIR measurements suggest that the paper quality is retained upon plasma treatment, the increase of surface hydrophilicity measured by water contact angle measurements, compared to non-treated paper, is believed to enhance the fiber swelling of the paper and lead to a faster ink removal.

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Microbial Enzymes and Their Application in Pulp and Paper Industry

Yakubu

Saikia

Vyas

2019

Recent Advancement in White Biotechnology Through Fungi

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Studies on the environmentally friendly deinking process employing biological enzymes and composite surfactant

Cited by 18 publications

References 12 publications

A Middle-Aged Enzyme Still in Its Prime: Recent Advances in the Field of Cutinases

A Middle-Aged Enzyme Still in Its Prime: Recent Advances in the Field of Cutinases

Improved de-inking of inkjet-printed paper using environmentally friendly atmospheric pressure low temperature plasma for paper recycling

Microbial Enzymes and Their Application in Pulp and Paper Industry

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