Biological deinking technology for the recycling of office waste papers

Viesturs, U.; Leite, Mônica Batista; Eisimonte, M.; Eremeeva, T.; Treimanis, A.

doi:10.1016/s0960-8524(98)00119-9

Cited by 34 publications

(21 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, these toners released from fiber was difficult to disperse and removal by conventional deinking process. This was because flotation process is size dependent and most favorable remove ink particle in the range of 10 to 150um (Viesturs, et al, 1999). As a conclusion the optimization of the enzymic reaction process with continuous removal of hydrolyzed ink must be carried out to enhance brightness of the paper.…”

Section: Observation Of Enzymatic Treated Papers Under Scanning Electmentioning

confidence: 99%

Characterization of cellulase, hemicellulase and lipase and its use in deinking of laser printed paper

Lee¹,

Demirtaş²,

Omar³

2013

MJM

View full text Add to dashboard Cite

Aims: It is recognized that laser printed paper are difficult to deink using conventional method. This had lead to the suggestion of enzymatic approach to overcome the problem encountered by commonly employed deinking techniques. The present study aimed to investigate 7 commercially available enzymes for their suitability use in deinking of laser printed paper. Methodology and results: 3 cellulases, hemicellulases, xylanase and 2 lipases were used in enzymatic deinking of laser-printed wastepaper. Cellulase A "Amano"3 (C), Hemicellulase (H) and lipase (L) were selected for used in deinking because they possess either highest activity or broad pH stability compared to others enzymes. Different combination of enzymes was carried out to evaluate their effectiveness in deinking process. CH enzymes sequence was determined to be the most effective sequence in toner removal with 1.90% of brightness increment. However, only 0.95% of brightness increment was gained by enzyme sequence L. Highest deinking efficiency obtained was not proportional to the highest total reducing sugar produced. Conclusion, significance and impact of study: Enzyme (cellulase and hemicellulase) can be used to de-ink laserprinted wastepaper, which are difficult to be deinked by conventional chemical deinking process. Thus, enzyme deinking has high possibility as alternative method to current chemical deinking process which is not environmental friendly.

show abstract

Section: Observation Of Enzymatic Treated Papers Under Scanning Electmentioning

confidence: 99%

Characterization of cellulase, hemicellulase and lipase and its use in deinking of laser printed paper

Lee¹,

Demirtaş²,

Omar³

2013

MJM

View full text Add to dashboard Cite

show abstract

“…The first step in the remanufacturing of the ink-jet cartridges before refilling is the washing of the remained ink. Consequently at this step results waste waters containing large variety of pollutants such as dyes and surfactants, which are characterized by high toxicity and low degradability [1][2][3][4][5]. The release of these waters in some effluents can reduce light penetration and photosynthesis, causing suffocation of aquatic flora and fauna [6].…”

Section: Introductionmentioning

confidence: 99%

“…In this aim there is a real need to develop an effective and cost viable waste water treatment [7][8][9]. Numerous methods have been studied for the removal of dyes from waste waters such as: flocculation/coagulation [3,5,[10][11][12], oxidation [1], photocatalysis [13], ultrafiltration [2,8,14], adsorption [6,7,9] and biological processes [4]. Due to the easy of operation most of the researchers focused on the adsorption processes [6,7,9,15].…”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline ferrites used as adsorbent in the treatment process of waste waters resulted from ink jet cartridges manufacturing

et al. 2015

View full text Add to dashboard Cite

Dye pollution in waste waters causes serious environmental and health risk, legislation problems and is a serious challenge to environmental scientists. In this work the treatment of waste waters resulted from ink jet cartridges manufacturing, using different nanocrystalline ferrites M II Fe 2 O 4 (M II = Mg, Cu) as adsorbent materials, has been investigated. The ferrites were obtained by thermal decomposition at 500°C of the magnesium and copper ferrioxalate coordination compounds. The nanocrystalline ferrites powder was investigated by various methods such as XRD, IR, SEM and EDX. The discoloration of the waste waters has been spectrophotometrically studied. The ferrites could be removed easily after adsorption by using a magnetic filtration process. The results indicated that the maximum adsorption efficiency was obtained after 60 min of treatment, magnesium ferrite showing a higher efficiency than the copper ferrite in the treatment process of waters resulted from ink jet cartridges manufacturing.

show abstract

“…The use of modern hybrid and high resolution MS analyzers and advanced modes of spectral data acquisition as well as chemometric tools enables capture of a suitably specific metabolomic profile and identification of characteristic metabolites [3,4]. A commonly used strategy in the metabolomic analysis is the registration of the metabolic profiles in MS mode (preferably in high resolution -TOF), and next chemometric analysis and database searching, then performing additional analysis in targeted MS/MS mode in order to identify characteristic metabolites [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…However, this procedure is time consuming and requires multiple repetitions of the analysis of the biological samples in MS and MS/MS mode as well as in different ionization modes (positive and negative). Therefore in currently reported metabolomics studies the more advanced data acquisition techniques such as fast/rapid polarity switching (FPS) or auto MS/MS mode are sometimes used [4,8,9]. In the case of FPS technique MS spectra are recorded in both polarizations at the same time, however MS/MS analysis should be finally performed separately.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Data Acquisition and Sample Preparation Methods for LC-MS Urine Metabolomic Analysis

Skibiński

Komsta

2015

Open Chemistry

View full text Add to dashboard Cite

Nowadays, chromatographic methods coupled with mass spectrometry are the most commonly used tools in metabolomics studies. These methods are currently being developed and various techniques and strategies are proposed for the profiling analysis of biological samples. However, the most important thing used to maximize the number of entities in the recorded profiles is the optimization of sample preparation procedure and the data acquisition method. Therefore, ultra high performance liquid chromatography coupled with accurate quadrupoletime-of-flight (Q-TOF) mass spectrometry was used for the comparison of urine metabolomic profiles obtained by the use of various spectral data acquisition methods. The most often used method of registration of metabolomics data acquisition -TOF (MS) was compared with the fast polarity switching MS and auto MS/MS methods with the use of multivariate chemometric analysis (PCA). In all the cases both ionization mode (positive and negative) were studied and the number of the identified compounds was compared. Additionally, various urine sample preparation procedures were tested and it was found that the addition of organic solvents to the sample noticeably reduces the number of entities in the registered profiles. It was also noticed that the auto MS/MS method is the least efficient way to register metabolomic profiles.

show abstract

Biological deinking technology for the recycling of office waste papers

Cited by 34 publications

References 2 publications

Characterization of cellulase, hemicellulase and lipase and its use in deinking of laser printed paper

Characterization of cellulase, hemicellulase and lipase and its use in deinking of laser printed paper

Nanocrystalline ferrites used as adsorbent in the treatment process of waste waters resulted from ink jet cartridges manufacturing

Optimization of Data Acquisition and Sample Preparation Methods for LC-MS Urine Metabolomic Analysis

Contact Info

Product

Resources

About