Secondary inorganic aerosols (SIA) are the predominant components of fine particulate matter (PM2.5) and have significant impacts on air quality, human health, and climate change. In this study, the Community Multiscale Air Quality modeling system (CMAQ) was modified to incorporate SO2 heterogeneous reactions on the surface of dust particles. The revised model was then used to simulate the spat...

This paper studies two high-pollution episodes over Greater Tokyo: 9 and 10 December 1999, and 31 July and 1 August 2001. Results obtained with the chemistry-transport model (CTM) Polair3D are compared to measurements of inorganic PM2.5. To understand to which extent the aerosol processes modeled in Polair3D impact simulated inorganic PM2.5, Polair3D is run with different options in the aerosol...

Severe air pollution, which is caused by large amount of pollutants and adverse synoptic processes, appears often 10 in Asia. However, limited studies on aerosols have been conducted under high emission intensity and under unique geographical and meteorological conditions. In this study, an Aerodyne high resolution time-of-flight aerosol mass spectrometry (HR-ToF-AMS) and other state-of-the-art...

Using biogenic nanoscale metals (Fe, Cu, ZnO, Se) to supplement into diet premix of reproductive LV (a Vietnamese Luong Phuong chicken breed) chickens resulted in certain improvement of poultry farming. The experimental data obtained showed that the farming indices depend mainly on the quantity of nanocrystalline metals which replaced the inorganic mineral component in the feed premix. All four...

Diffuse pollution sources have been recognised by the European Water Framework Directive to significantly contribute to pollution of stormwater receivers. Stormwater runoff is considered to represent diffuse pollution sources. The aim of this study was to clarify the contributions of specific sources in the urban environment to the content of organic and inorganic pollutants in stormwater. This...

Reverse osmosis (RO) is a ground breaking membrane based technology to purify water by separating the dissolved solids from feed stream resulting in permeate and reject stream for a wide arena of applications in domestic , industrial and wide array of applications. Reverse osmosis or other membrane separation processes has an innovative vision which is extremely targeted towards environmental p...

In this work the adsorption features of activated carbon and the magnetic properties of iron oxides were combined in a composite to produce magnetic adsorbent. Batch experiments were conducted to study the adsorption behavior of arsenate onto the synthetic magnetic adsorbent. The effects of initial solution pH, contact time, adsorbent dosage and co-existing anionic component on the adsorption o...

Through the collection and analysis of COD, dissolved inorganic nitrogen (DIN) active phosphate monitoring data in Tianjin Hangu Agricultural fishery area from 2010 to 2019, this paper analyzed studied structure nutrients state eutrophication. The results show that recent ten years, water quality Fishery Area has basically met requirements functional area, regional pollution been suppressed, eu...

The apricot plant was washed, dried, and powdered after harvesting to produce a fine powder that used in water treatment. created an alcoholic extract from the using ethanol, which then analysed GC-MS, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy identify active components. Zinc nanoparticles were extract. FTIR, UV-Vis, SEM, EDX, TEM are characterize zinc nanopartic...