Authors: Ruijie Fu Kai Yao Qisheng Zhang Dongying Jia Jiayuan Zhao Yuanlong Chi
Publish Date: 2016/11/10
Volume: 182, Issue: 1, Pages: 55-66
Abstract
A series of collagen hydrolysates CHs were prepared from pigskin shavings by using pepsin PCH trypsin TCH Alcalase ACH HCl HCH and NaOH NCH Their physicochemical properties including degree of collagen hydrolysis molecular weight distribution electric charge and microstructure were investigated and their flocculation performance was evaluated in a kaolin suspension at varied pHs and concentrations PCH exhibited high flocculation capability under acidic and neutral conditions and its efficiency for removing suspended particles was approximately 80 at a concentration of 005 g/L TCH ACH HCH and NCH showed almost no flocculation capability The flocculation capability of PCH could be mainly due to a combination of optimal molecular weight distribution and electric charge This study could provide an environmentfriendly natural flocculant and also proposes a promising approach for the reuse of collagen wastesThis research was financially supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China no 20130181120094 the National Natural Science Foundation of China no 31601442 no 31371775 and the Science and Technology Support Program of Sichuan Province no 2016NZ0007
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