Engineering science of colloid and interface phenomena in the domain of agro and aquatic environment

2014 Fiscal Year Final Research Report

• Project/Area Number: 22248025
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Irrigation, drainage and rural engineering/Rural planning
• Research Institution: University of Tsukuba
• Principal Investigator: ADACHI Yasuhisa 筑波大学, 生命環境系, 教授 (70192466)
• Co-Investigator(Kenkyū-buntansha): KOBAYASHI Motoyoshi 筑波大学, 生命環境系, 准教授 (20400179) ; YANG Yingnan 筑波大学, 生命環境系, 准教授 (50561007) ; YOSHINO Kunihiko 筑波大学, システム情報工学系, 教授 (60182804) ; NOMURA Nobuhiko 筑波大学, 生命環境系, 教授 (60292520) ; KYOTOH Harumichi 筑波大学, システム情報工学系, 教授 (80186345)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: コロイド粒子 / 凝集 / 水質 / モデルコロイド / 界面動電現象 / 高分子電解質 / 吸着 / ダイナミクス

Outline of Final Research Achievements

Colloid and interface phenomena are critical issue in the control of soil condition in agriculture, in the prediction of water quality of river, lake and estuary and in the design of water treatment process. The present investigation was designed to clarify the engineering scheme of colloid and interface science that is useful in the domain of agro and aquatic environment where we usually encounter complicated dynamics in the flow field and porous media. For this purpose, we carried out the systematic study using spherical model colloids realizing simplified system. This approach enabled the analysis of dynamic behavior of adsorption inducing the modification of surfaces properties and flocculation. The obtained information was also useful in the analysis of sedimentation and description of rheological behavior of flocculated material that is partically relevant. One of the most remarkable results was obtained when polyelectrolyte adsorption dynamics is involevd.

Free Research Field

地域環境工学・計画学