This study evaluated nutrient flux (nitrate (NO3−), ammonium (NH4+), phosphate (PO43−), and dissolved organic carbon (DOC) at the sediment-water interface river ecosystem metabolism (REM) to investigate how these ecological functions vary in Beijing’s urban waterways. Three tributaries of River Beiyun were selected. Water quality varied across sites as each receives a mixture wastewater treatme...

In this paper, atmospheric water-soluble cation and anion contents of PM10 are analysed in Makkah, Saudi Arabia. samples were collected at five sites for a whole year. concentrations (µg/m3) ranged from 82.11 to 739.61 Aziziyah, 65.37 421.71 Sanaiyah, 25.20 466.60 Misfalah, 52.56 507.23 Abdeyah, 40.91 471.99 Askan. Both daily annual averaged exceeded WHO Arabia national air quality limits. Dail...

Excessive nutrients in aquaculture effluent have become an alarming environmental issue. However, current treatment methods for recovering are ineffective since the contains trace amounts of nutrients. Pressure-driven nanofiltration (NF) is a potential solution to problem low concentration gradient. In this work, NF was applied concentrate and recover (ammonium (NH4+), phosphate, (PO43-), nitra...

Abstract The fish canning industries produce a large amount of wastewater. high-strength wastewater from processing industry is great concern worldwide. This type rich in organic matter and has high total dissolved solids (TDS). elimination salts usually expensive and, on the other hand, salinity seasonal variation effluent characteristics make removal difficult using only biological process. F...

Elevated nutrient inputs challenge the health and functioning of aquatic ecosystems. To improve riverine water quality management, it is necessary to understand underlying biogeochemical physical processes, anthropogenic drivers their interactions at catchment scale. We hypothesize that spatial heterogeneity sources dominantly controls variability in-stream concentration dynamics among catchmen...