生物酶法對新型油墨的脫除研究

輕化工程論文編號:QH018  論文字數:10481,頁數:29

目  錄
摘要
ABSTRACT
1  緒論 1
1.1 研究的背景和意義 1
1.1.1 造紙工業現狀 1
1.1.2 目前的廢紙脫墨情況 1
1.1.3 生物酶法脫墨研究 2
1.2 研究的內容和所需解決的問題 4
2  混合廢紙的脫墨研究 6
2.1 實驗原料、儀器及方法 6
2.2 數據處理和結果討論 8
2.3 生物酶法最佳工藝條件脫墨 12
2.4 生物酶法最佳工藝條件脫墨與化學法脫墨的結果比較 12
2.5 小結 13
3  紫外油墨上光紙的脫墨研究 14
3.1 實驗原料、儀器及方法 14
3.2 數據處理和結果討論 15
3.3 生物酶法最佳工藝條件脫墨 19
3.4 生物酶法最佳工藝條件脫墨與化學法脫墨的結果比較 19
3.5 小結 20
4  結論 21
致 謝 22
參考文獻 28

摘要：本論文所研究的是生物酶在廢紙碎漿時對油墨的脫除作用，此研究所用到的生物酶是工業生產的混合酶制劑。選用書本紙和經紫外油墨上光的紙張（比例為2:1）以及單一的紫外油墨上光的紙張，分別通過正交試驗法進行酶處理，測試所抄得紙張的物理性能指標（主要是白度和殘余油墨量），并通過數據的分析比較，得出以下結論：經生物酶處理的抄得的紙張與經化學法處理抄得的紙張相比，白度高，殘余油墨量少。生物酶對書本紙和經紫外油墨上光的紙張（比例為2:1）處理的最佳條件組合為：酶處理時間為30 min，pH值為9，溫度為60℃，酶用量為廢紙絕干量的0.3%。對單一紫外油墨上光的紙張處理的最佳條件組合為：酶處理時間為30 min，pH值為8，溫度50℃，酶用量為廢紙絕干量的0.3%。反應時間和酶用量是影響實驗結果的主要因素，溫度和pH值是次要因素。
 關鍵詞：生物酶；紫外油墨；白度；殘余油墨量

 Cellulase Deinking of Waste Printed by New Ink
 
 Abstract ：In this paper, the industrial production of hybrid enzymes was used to deinked the waste paper, which included old messages mixed with coated paper by UV (the ratio of 2:1) and a single UV ink coating of paper. Experiments were carried out with enzyme treatment according to the orthogonal methods. Then, the physical properties (mainly whiteness and residual ink volume) of finished paper were examined. The results showed that the samples treated by enzyme obtained higher brightness and less residual ink as the industrial dosage respectively. The optimum condition for deinking of OMG mixed with UV ink coating of paper (the ratio of 2:1) was: enzyme treatment time is 30 minutes, pH = 9, temperature was 60 ℃, and the dosage of enzyme was 0.3% based on the absolutely weight of fiber. For the single coated paper by UV ink, when the dosage of enzyme was 0.3%, pH value 9, treating time 30 minutes and temperature 50℃, the idealist result was obtained. Treating time and the dosage of enzyme were the main factors which influence the results, and reacting temperature and pH value were secondary factors.
 
Key words: cellulose; UV ink; brightness; residual ink amount