Publications by authors named "Jeff B Langman"
Article Synopsis
- Clinoptilolite shows varying effectiveness in capturing and releasing iron based on pH levels, with optimal sorption occurring between pH 2 and 3.5.
- At pH 2, up to 70% of captured iron can be desorbed from a previous pH 3 solution, indicating that iron retention occurs primarily through sorption and exchange processes.
- The study suggests that clinoptilolite can maintain its ability to hold onto metals, even as acidity increases, evolving through different states of metal retention as pH changes.
Perceived Risk and Intentions to Practice Health Protective Behaviors in a Mining-Impacted Region.
Int J Environ Res Public Health
October 2020
Effective risk communication strategies are critical to reducing lead exposure in mining-impacted communities. Understanding the strength of the associations between perceived risk and individuals' behavioral intentions to protect their health is important for developing these strategies. We conducted a survey within three communities of northern Idaho, USA ( = 306) in or near a Superfund Megasite with legacy mining contamination.
View Article and Find Full Text PDFFormation of dissolved metal particles (<450 nm) in mining-impacted environments is a concern because of their potential for greater mobility and ecotoxicity compared to free ion and(or) sediment-bound metals. Metal-contaminated environments may produce soluble metal(loid) particles whose stability and transportability are determined by environmental conditions and particle composition. The Coeur d'Alene River Basin of northern Idaho, USA, is impacted by legacy mine waste-estimated 56 million tonnes of waste rock containing 900,000 t of Pb and 700,000 t of Zn were discharged into the Coeur d'Alene River and its tributaries during mining of argentiferous galena-sphalerite deposits.
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