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The use of colloid-enhanced ultrafiltration for boron removal from water is investigated. Biodegradable surfactant, 1,4-sorbitol
oleate, was applied to obtain micelles and high molecular weight chitosan to reinforce their stability. Two kind of membranes
were compared: neat porous polysulfone membrane and charged porous sulfonated polysylfone membrane; both with similar average
pore diameter of 5 nm. The studies revealed that two key factors affect the boron rejection: presence of surfactant in the
colloidal mixture and a repulsion effect of sulfone groups on the membrane surface. Both have a positive effect on boron
removal. 相似文献
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T. Glytsos J. Ondráček L. Džumbová I. Kopanakis M. Lazaridis 《Atmospheric environment (Oxford, England : 1994)》2010,44(12):1539-1549
Indoor sources have been identified as a major contributor to the increase of particle concentration in indoor environments. The work presented here is a study of the characteristics of particulate matter number size distribution and mass concentration under controlled indoor activities in a laboratory room. The objective is to characterize particulate matter concentrations indoors resulted under the influence of specific sources. Measurements were performed in an empty laboratory (period September–October 2006) using a GRIMM SMPS+C system (particle size range between 11.1 and 1083.3 nm), a DustTrak Aerosol Monitor (TSI) and a P-Trak Ultrafine Particle Counter (TSI). The studied indoor activities included candle burning, hot plate heating, water boiling, onion frying, vacuuming, hair drying, hair spraying, smoking and burning of incense stick. The AMANpsd computer algorithm was used to evaluate the modal structure of measured particle number size distribution data. Furthermore, the change of the particle number size distribution shape under the influence of different emission sources was studied versus time. Finally the particle emission rates were computed. High particle number concentrations were observed during smoking, onion frying, candle burning and incense stick burning. The highest particle mass concentrations were measured during smoking and hair spraying. The shift of the particle size distribution to larger diameters suggests the presence of strong coagulation effect during candle burning, incense stick burning, smoking and onion frying. The size distribution was mainly bimodal during onion frying and candle burning, whereas the size distribution remained unimodal during incense stick burning and smoking experiments. 相似文献
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Innovative aspects of environmental chemistry and technology regarding air,water, and soil pollution
Katsoyiannis Ioannis A. Lammel Gerhard Samara Constantini Ernst Mathias Wenk Jannis Torretta Vincenzo Voutsa Dimitra Vollertsen Jes Bucheli Thomas D. Godbersen Levke Lambropoulou Dimitra Heath Ester Kallenborn Roland Giannakoudakis Dimitrios Deliyanni Eleni Bandosz Teresa J. Ražić Slavica Samanidou Viktoria Papa Ester Lacorte Silvia Katsoyiannis Athanasios 《Environmental science and pollution research international》2021,28(42):58958-58968
Environmental Science and Pollution Research - 相似文献
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Murillo-Acevedo Yesid S. Giraldo Liliana Poon Po S. Matos Juan Moreno-Piraján Juan C. 《Environmental science and pollution research international》2021,28(6):6746-6757
Environmental Science and Pollution Research - A linear algebra theorem like Cramer’s rule was used for the analysis of a system of equations obtained from UV spectroscopy, and results were... 相似文献
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Determination of phthalates in particulate matter and gaseous phase emitted in indoor air of offices
Szewczyńska Małgorzata Dobrzyńska Elżbieta Pośniak Małgorzata 《Environmental science and pollution research international》2021,28(42):59319-59327
Environmental Science and Pollution Research - Phthalate esters (PAEs) are endocrine disrupters and can disrupt the functioning of different hormones, causing adverse effects on human health. Due... 相似文献
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Ivančev-Tumbas Ivana Lužanin Zorana Česen Marjeta Bogunović Minja Sekulić Tatjana Djaković Heath David Heath Ester 《Environmental science and pollution research international》2021,28(42):59368-59381
Environmental Science and Pollution Research - This study reports how adding a membrane filter (0.45-μm cellulose nitrate filter) between a glass fibre filter and the solid phase extraction... 相似文献