Journals / İstanbul Üniversitesi Orman Fakültesi Dergisi / 2001 / Cilt: 51 - Sayı: 2

Investigation of the flotation deinkability of printed waste office paper

Atık ofis kağıtlarında flotasyon esaslı mürekkep giderilebilme etkinliğinin incelenmesi

Pages
81–93
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results showed that the value of average deinking coefficient for examined samples was 86.11% and pulp yield losses for all the runs were found around 30%.

📌 3 Key Takeaways

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Objective & Hypothesis:The objective of this study was to examine the flotation deinking of high-quality waste office (photocopy) paper printed using a Ricoh Priport Dupli-cating Machine based on screen printing system.
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Key Findings & Data:Finally a comparison was made between three stocks as focusing on deinking performance, physical strength, yields and environmental concerns.
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Conclusion & Impact:Results showed that the value of average deinking coefficient for examined samples was 86.11% and pulp yield losses for all the runs were found around 30%.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The objective of this study was to examine the flotation deinking of high-quality waste office (photocopy) paper printed using a Ricoh Priport Dupli-cating Machine based on screen printing system. In order to analyse the effi-ciency of deinking, the printed and unprinted papers were tested for deinking by PTS (Papier Technische Stiftung) method based on three test procedures which are printed stock, unprinted stock and deinked stock. After deinking and preparation of handsheets, the optical and physical properties of samples were measured according to TAPPI and ISO standards. Finally a comparison was made between three stocks as focusing on deinking performance, physical strength, yields and environmental concerns. Results showed that the value of average deinking coefficient for examined samples was 86.11% and pulp yield losses for all the runs were found around 30%. There were no significant differences in the quality and treatability of the process or waste water taken from the three runs. The deinked trial displayed improved brightness and whiteness properties and comparable strength compared to the printed stock trial.

Özet

Bu çalışmada, elekli (screen) baskı prensibine dayalı Ricoh Priport masa üstü çoğaltma makinesinde tek yüzeylerine baskı yapılan A4 boyutlu fotokopi kağıtlarının flotasyon yöntemiyle mürekkep giderilebilme etkinliği incelenmiştir. Bu amaçla baskılı ve baskısız kağıt örneklerinden genel hatlarıyla PTS (Papier Technische Stiftung) metoduna uyularak üç farklı hamur elde edilmiştir. Bunlar sırasıyla baskılı ve baskısız kağıtlardan hamurlaştırılarak elde edilen ve baskılı kağıtlardan mürekkep giderilerek elde edilen hamurlardır. Bu hamurlardan standart test kağıtları yapılarak fiziksel ve optik nitelikleri incelenmiştir. Test sonuçlarına göre mürekkebi giderilmiş hamurlardan elde edilen test kağıtların fiziksel niteliklerinin diğerlerine kıyasla daha yük-sek olduğu görülmüştür. Ayrıca bu kağıtların CIE L* değeri 92.15 ve (a*2+b*2)I/2 değeri ise 8.08 olarak ölçülmüştür. Çalışmada kullanılan özellikleri belli atık kağıdın "Mürekkep Giderilebilme Faktörü" %86.11 olarak bulunurken, her üç hamur için %30 civarında madde kayıpları söz konusu ol-muştur. Çevre açısından önemli bir kriter olarak kabul edilen kimyasal oksijen isteği analizi her üç hamurun yıkama sonrası atık sularında yapılmış ve sonuçta aralarında su kalitesi açısından önemli bir farkın olmadığı saptanmıştır.

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Cite This Article

İMAMOĞLU, S. (2022). Investigation of the flotation deinkability of printed waste office paper. İstanbul Üniversitesi Orman Fakültesi Dergisi, Cilt: 51 - Sayı: 2, 81–93. https://ajindex.com/articles/554510

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