源于制鞋工業(yè)的固體廢料處理

摘要： 鉻鞣革和涂飾革在世界范圍內(nèi)每年帶來成千上萬噸的廢棄物.文章研究了不同成革種類在生產(chǎn)過程中帶來的廢棄物.通過酶法水解可將固體廢棄物分解成兩類產(chǎn)品:低相對分子質(zhì)量(約10,000 Da)的可溶性膠原;含鉻和剩余蛋白的不溶性鉻餅.利用3步酶法水解固體廢棄物,同時根據(jù)水解物中的含氮量來表征水解的效率.在理論條件下,水解的有效率可達(dá)73%.膠原水解物含鉻量相當(dāng)?shù)?不超過100 mg/kg). Abstract： Chrome-tanned and finished leather clicking waste represents several hundreds thousand tons per year annually world-wide.The paper deals with the study on processing of leather wastes arising from leather (mainly shoe,garments,upholstery) industry.Solid leather waste was treated through enzymatic hydrolysis into two products:water-soluble collagen hydrolysate of low molecular mass (approx.10,000 Da) and remained insoluble cake containing chromium and residual protein.A 3-stage enzymatic hydrolysis was applied and the efficiency of the process was monitored by the degree of leather waste hydrolysis expressed by nitrogen content in collagen hydrolysate.Under proposed optimal conditions the efficiency of hydrolysis can reach up to 73%.Collagen hydrolysate thus prepared contains,in addition,very low chromium content (not more than 100 mg/kg). 作 者： P.Mokrejs    D.Janacova    K.Kolomaznik    M.Mladek    F.Langmaier    V.Vasek   作者單位： P.Mokrejs,M.Mladek,F.Langmaier(Tomas Bata University,Faculty of Technology,Department of Protein and Leather,nam, TGM 275,762 72 Zlin,The Czech Republic)

D.Janacova,K.Kolomaznik,V.Vasek(Tomas Bata University,Faculty of Applied In formatics,Institute of Processing Control and Applied Computer Science, Nad Stranemi 4511,760 05 Zlin,The Czech Republic) 

期 刊： 皮革科學(xué)與工程  ISTICPKU   Journal： LEATHER SCIENCE AND ENGINEERING  年，卷(期)： 2007, 17(2)  分類號： X794  關(guān)鍵詞： 革廢物    酶法水解    膠原水解物    鉻餅    Keywords： leather waste    enzymatic hydrolysis    collagen hydrolysate    chrome cake   

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