Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53401#.VMCN3SzQrzE Author(s)     Hui-Min Liu 1 , Yang Yan 2 , Dai-Jie Shao 2 , De-Liang Li 2* , Yun-Liang Zhang 3   Affiliation(s) 1 College of Forestry, Central South University of Forest and Technology, Changsha, China . 2 College of Material Science and Engineering, Central South University of Forest and Technology, Changsha, China . 3 Changsha Pt-Shark Environmental Co. Ltd., Changsha, China . ABSTRACT In order to decrease the content of heavy metals in the crops soils, a novel method based on using an aqueous solution bearing cysteamine as the key ingredient was studied to extract the polluted heavy metals including Cd, Cu, Zn, Ni and Pb. By using the single-factor method, remediation-related technical index were screened and they are, respectively, applied to the solid material whereby the heavy metals are released and extracted from the ...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53389#.VMBtrSzQrzE Author(s)    Yi-Lin Chen , Jih-Min Sung , Sheng-Dun Lin *   Affiliation(s) Department of Food Science and Technology, Hungkuang University, Taichung, Taiwan . ABSTRACT The extraction yields, active compounds and antioxidant properties of 50%-aqueous-ethanolic extracts of freeze-dried Echinacea purpurea flower with multi-steps and multi-batches extraction methods were assessed. In multi-steps extraction, the extraction yields of 1st, 2nd, and 3rd extracts were 21.52%, 9.33%, and 2.90%, and their total phenols contents were 182.08, 176.33, and 177.08 mg CAE/g, respectively, with cichoric acid (62.07 - 66.57 mg/g) being the main phenolic compound. No differences in the contents of individual and total caffeic acids derivates existed among 1st, 2nd, and 3rd extracts. The dodeca-2E, 4E, 8Z, 10(E/Z)-tetraenoic acid isobutylamide (alk...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52279#.VI-HqMnQrzE Author(s)   Rashmi Kumar 1* , Dahyalal J. Shah 2 , Krishna Kant Tiwari 3 Affiliation(s) 1 D. J. Sanghvi College of Engineering, Mumbai, India . 2 Mukesh Patel School of Technology Management & Engineering (NMIMS), Mumbai, India . 3 Jaypee University of Engineering and Technology (Guna), Madhya Pradesh, India . ABSTRACT Process intensification using liquid emulsion membranes (LEMs) for extraction of copper has been studied in this work. In LEM process the extraction and stripping processes are combined in one stage. The solubility of the solute or the chemical affinity between the solute and carrier reagent i...