「サブミクロン粒子の離脱」の難関を低出力型超音波洗浄機で突破できるか?Can a low-power ultrasonic cleaner overcome the challenge of removing submicron particles?

sub-micron粒子が堆積された基板を数百nm炭素系粒子が含まれている水系サスペンションに超音波法を利用した微粒子回収法(洗浄法)が提案された。A protocol for the detachment of submicron particulates deposited on flat substrate and their collection in aqueous samples is proposed based on an ultrasonic method.

数μmのエアロゾル液滴が親水性表面にどのように沈着するのか?Micrometer-sized droplet aerosols on to a hydrophilic surface. 応用例:エアロゾル吸入器など

大気に浮遊する微粒子の沈着の場所について考えてみた。”Wet”微粒子は「親水性の高い」場所に多く沈着する。”Dry”微粒子”は「親水性の低い」場所に多く沈着する。Considered the location of the deposition of particles suspended in the air. The results: “More hydrophilic” area trapped more “wet” particles. The “less hydrophilic” area trapped more “dry” particles.

作物(小松菜)に水溶性微粒子を長期的に散布した後は? What happens after long-term spraying of water-soluble fine particles on a crop (komatsuna)?

Short Introductions of other papers: /paper/ Komatsuna plants were grown and exposed to ammonium sulfate (((NH4)2SO4), AS) submicron particles for 16 days (22.5 µg m−3 per day) in phytotrons. The amount of particles deposited on the leaf  decreased over time, because AS particles deposited on the leaf deliquesced, allowing ions such as SO42− in the…

Collection of fine particles in tap water (drinking water) by electrophoresis. 電気泳動法で水道水(飲料水)中の微粒子の採集

Other “intro” of papers from our lab >> /tag/paper/ Removal of iron-oxide particles after post-filtration in local potable water using an electrophoretic method Collaborated with: Univ. Putra Malaysia; Univ. Teknologi MARA, Malaysia Journal of Water Process Engineering: Vol. 9, Feb. 2016, Pages 208–214. doi: Full text/PDF: Researchgate, or here Keywords: Electrophoretic deposition; Fibre electrodes; Limiting flux;…

PAPER: Effect of water-soluble particles on the growth of plants (2 years) 植物に水溶性微粒子を与えていたら?

JOURNAL: Atmospheric Environment (2014) http://www.sciencedirect.com/science/article/pii/S1352231014000405 Effects of 2-years exposure to (sub-micron) ammonium sulfate particles on growth and gas exchange rates of Fagus crenata (ブナ), Castanopsis sieboldii (スダジイ), Larix kaempferi (唐松) and Cryptomeria japonica (スギ) seedlings •No significant effect of the particles on growth was observed after 2 years. •Net photosynthetic rates of 3 species were not significantly changed….

Seminar from ITB professor (11 Apr.) Wetland potential for recycling of wastewater treatment plant effluent (湿地、排水処理)

当研究室に2週間滞在のインドネシア・バンドン工科大学・環境工学科Prayatni教授にセミナーをお願いしました。 会場はBASE大会議室(1F)11:00です。 Open seminar by Prof. Prayatni Soewondo, Environmental Engineering, Faculty of Civil Engineering and Environmental, Institut Teknologi Bandung (ITB), Indonesia. http://personal.ftsl.itb.ac.id/prayatni/ Link = ITB 11 APRIL 2013, 11:00-12:00, Venue: BASE 1st Floor meeting room. Wetland Potential as alternative solution for recycling of domestic WWTP (wastewater treatment plant) Effluent. Case Study : Bojongsoang WWTP, Bandung….

電気化学法で合成した磁鉄鉱ナノ粒子の熱安定性 Thermal stability of magnetite particles made by an electrochemical method,

Magnetite nanoparticles have been prepared by electrooxidation of iron in water. Surface modifications have been conducted by coating the nanoparticles with silica by a one-step synthesis in dilute sodium silicate solution. 水中の鉄の電気酸化によってマグネタイトナノ粒子を調製した。希薄ケイ酸ナトリウム溶液中での一段階合成によりナノ粒子をシリカで被覆することにより表面改質を行った。