Now showing items 1-10 of 21
Prediction of the long-term performance of green liquor dregs as a sealing layer to prevent the formation of acid mine drainage
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-08)
One of the mining industry's main concerns is the management of waste rock and tailings generated by sulfide ore extraction. Upon exposure of atmospheric oxygen, iron sulfides oxidize generating acidity. Infiltrating water form a metal-rich acidic leachate called acid mine drainage (AMD), that can cause serious environmental problems. Green liquor dregs (GLD) is a material that resists the passage ...
Study on enzymatic activities and behaviors of heavy metal in sediment–plant at muddy tidal flat in Yangtze Estuary
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-09-02)
Modelling the transport of oil after a proposed oil spill accident in Barents Sea and its environmental impact on Alke species
(Peer reviewed; Conference object; Konferansebidrag; Bokkapittel; Chapter, 2017)
Accidental oil spills can have significant effect on the coastal and marine environment. As the oil extraction and exploration activities increase in the Barents Sea, it is of increasingly importance to investigate the potential oil spill incidents associated with these activities. In this study, the transport and fate of oil after a proposed oil spill incident in Barents Sea was modelled by oil ...
The effect of drinking water quality on the health and longevity of people-A case study in Mayang, Hunan province, China
(Peer reviewed; Chapter; Bokkapittel, 2017)
Drinking water is an important source for trace elements intake into human body. Thus, the drinking water quality has a great impact on people's health and longevity. This study aims to study the relationship between drinking water quality and human health and longevity. A longevity county Mayang in Hunan province, China was chosen as the study area. The drinking water and hair of local centenarians ...
Ambient air quality and the effects of air pollutants on otolaryngology in Beijing
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-09)
Abstract To investigate temporal patterns, pollution concentrations and the health effects of air pollutants in Beijing we carried out time-series analyses on daily concentrations of ambient air pollutants and daily numbers of outpatient visits for otolaryngology over 2 years (2011– 2012) to identify possible health effects of air pollutants. The results showed that PM10 was the major air ...
Spatiotemporal patterns of particulate matter (PM) and associations between PM and mortality in Shenzhen, China
(Peer reviewed, 2016-03-02)
Background: Most studies on air pollution exposure and its associations with human health in China have focused on the heavily polluted industrial areas and/or mega-cities, and studies on cities with comparatively low air pollutant concentrations are still rare. Only a few studies have attempted to analyse particulate matter (PM) for the vibrant economic centre Shenzhen in the Pearl River Delta. ...
Column leaching heavy metal from tailings following simulated climate change in the Arctic area of Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
This study aimed to assess how the current climate change perspective, with various air temperature (4°C, 10°C, 14°C and 18°C) affected metal releasing from tailings. Heavy metals pollution from tailings leaching are of increasing concern. Column leaching experiment was conducted for 15 weeks to a series of tailings with 20 mm/week water leaching four temperature situations. Leachate chemical physics ...
Column leaching test on oxidized and non-oxidized tailings in northern Norway
(Journal article; Peer reviewed, 2018)
Column leaching test was applied for oxide and non-oxide tailings in the Arctic area. Physico-chemical parameters (pH, pe: potential ecolotric, conductivity, TDS: Total dissolved solids, SO4 2−, salinity, Ni, Co, Zn and Mn) were measured to identified the effect of oxidized degree on heavy metals leaching from tailings. Results showed that oxidized tailings contained higher levels of Co and Ni, and ...
Anomaly Detection for Environmental Data Using Machine Learning Regression
(Journal article; Peer reviewed, 2018)
Environmental data exhibits as huge amount and complex dependency. Utilizing these data to detect anomaly is beneficial to the disaster prevention. Big data approach using the machine learning method has the advantage not requiring the geophysical and geochemical knowledge to detect anomaly. This paper using the popular support vector regression (SVR ) to model the correlation between factors. ...
The effect of temperature and precipitation on the leaching of contaminants from Ballangen tailings deposit, Norway
(Journal article; Peer reviewed, 2019)
Leaching and transport of contaminants from tailings deposit is a highly complex interacting system affected by a suite of environmental factors, among which temperature and precipitation rates linked to climate change are two important parameters. The climate change in the Nordic region is more drastic than other regions. In this study, a laboratory batch leaching experiment was performed on the ...