2024-03-28T08:18:40Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/441492022-11-17T02:08:08Zhdl_2115_44124hdl_2115_44079hdl_2115_33096Development of eco-friendly biodegradable flocclantLiu, Xin劉, 馨open access360「魅力あるポスター賞」受賞Separation of soil particles in water is very important in both environment and industry. Recently, chemical flocculants are widely used to improve solid- liquid separation, but they are environmentally undesirable. Thus, extracellular polymers produced by bacteria (bioflocculants) has been a topic of intense research. However, it is deficient in practical application. In our laboratory, a novel bioflocculant, methylated soy protein (MeSP), has been developed and its flocculation performance was tested with kaolin suspensions. The flocculation performance of MeSP was much higher than that of commercial polyaluminum chloride (PAC) in terms of supernatant clarity and floc settling velocity. In freshwater and at a fixed flocculant dosage of I wt%, MeSP reduced the relative absorbance to 0 within I min over a wide pH range, while PAC was effective only at around pH 6. In seawater, MeSP (0.5wt% to 3wt%) reduced the relative absorbance to less than 0.1, while PAC was ineffective.2010-10-24engconference objectVoRhttp://hdl.handle.net/2115/44149第2回北海道大学サステナビリティ学生研究ポスターコンテスト = The Second Hokkaido University Sustainability Research Poster Contest. 平成22年10月24日(日) - 11月5日(金). 北海道大学学術交流会館, 札幌市.Hokkaido University Sustainability Research Poster Contest北海道大学サステナビリティ学生研究ポスターコンテスト2Sapporo札幌JPNhttps://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/44149/1/C6-3.pdfapplication/pdf939.09 KB2010-10-24