High-temperature hydrothermal activity areas in western Sichuan Province, China are ideal objects for studying deep Earth science, extreme ecological environments, and comprehensive geothermal utilization. To understand the geochemical characteristics of rare elements (REEs) Chaluo hot springs authors analyzed composition fractionation REEs through hydrochemical analysis, REE tests, North Ameri...

Arsenic is a toxic and carcinogenic contaminant of potential concern. Ettringite [Ca6Al2(SO4)3(OH)12·26H2O] has the ability to incorporate oxyanions as a solid solution with SO42-, which could lower the soluble oxyanion concentrations. Therefore, ettringite containing SO42- and AsO43- has been synthesized. Results indicated that AsO43- could substitute for SO42- inside the channels of ettringit...

The recovery of metal(loid)s from municipal solid waste (MSW) samples <10 years old and >10 was investigated using a series pH-dependence leaching batch tests ranging between pH 2 10. Further to this, the influences various parameters, including depth, humic acid (HA) concentrations on Li, Al, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Pb, Hg were investigated. Visual MINTEQ geochemical software then used...

Selected heavy metals (HMs) including Cd, Cr, Cu, Ni, Pb and Zn initially released from a full-scale bioreactor landfill were monitored over the first 20 months of operation. At the initial landfill stage, the leachate exhibited high HMs release, high organic matter content (27000-43000gl(-1) of TOC) and low pH (5-6). By the fifth month of landfilling, the methanogenic stage had been establishe...

Groundwater is an important resource for domestic use and irrigation in the Yinchuan region of northwest China. However, quality groundwater this declining due to human activities, with adverse effects on health. In order study chemical elements health, health risk drinking was calculated based actual situation China U.S. Environmental Protection Agency (USEPA) model. Moreover, sensitivity cont...

Three sediment cores were collected in the Scheldt, Lys and Spiere canals, which drain a highly populated and industrialized area in Western Europe. The speciation and the distribution of trace metals in pore waters and sediment particles were assessed through a combination of computational and experimental techniques. The concentrations of dissolved major and trace elements and Zn) were used t...

At present, all kinds of municipal solid waste incineration (MSWI) fly ash stabilization technology has been reported and successfully applied in many countries. However, leaching procedures are very different that the technologies lack uniform standard, and it is even impossible to predict the long-term stabilization. Geochemical model can explain the environmental stabilization based on chemi...

Aqueous modelling of chemical speciation in simulated lung fluid (SLF) enables a better understanding the underlying factors that influence metal(loid) inhalation bioaccessibility from airborne particulate matter. Such an approach can be used to supplement experimental techniques are integral health risk assessment exposure by inhalational routes. In this paper, we modelled aqueous chemistry pa...

Midwestern US agroecosystems suffer greatly due to excess phosphorus (P) in runoff from land-applied manure. Precipitating P as struvite would remove it the manure stream, allowing efficient storage, transportation, and use slow-release fertilizer. To achieve precipitation, organic solids calcium (Ca) must first be removed This study assessed precipitation dairy using a novel processing pipelin...

The electroanalytical technique Absence of Gradients and Nernstian Equilibrium Stripping (AGNES) has been extended by applying stripping chronopotentiometry (SCP) as the re-oxidation stage in the determination of the free concentration of Zn(2+), Cd(2+) and Pb(2+). This new approach, called AGNES-SCP, has been implemented with screen-printed electrodes (SPE) and the standard Hanging Mercury Dro...