Groundwater Molybdenum from Emerging Industries in Taiwan

Abstract

This study determined the influence of emerging industries development on molybdenum (Mo) groundwater contamination. A total of 537 groundwater samples were collected for Mo determination, including 295 samples from potentially contaminated areas of 3 industrial parks in Taiwan and 242 samples from non-potentially contaminated areas during 2008-2014. Most of the high Mo samples are located downstream from a thin film transistor-liquid crystal display (TFT-LCD) panel factory. Mean groundwater Mo concentrations from potentially contaminated areas (0.0058 mg/L) were significantly higher (p < 0.05) than those from non-potentially contaminated areas (0.0022 mg/L). The highest Mo wastewater concentrations in the effluent from the optoelectronics industry and following wastewater batch treatment were 0.788 and 0.0326 mg/L, respectively. This indicates that wastewater containing Mo is a possible source of both groundwater and surface water contamination. Nine samples of groundwater exceed the World Health Organization's suggested drinking water guideline of 0.07 mg/L. A non-carcinogenic risk assessment for Mo in adults and children using the Mo concentration of 0.07 mg/L yielded risks of 0.546 and 0.215, respectively. These results indicate the importance of the development of a national drinking water quality standard for Mo in Taiwan to ensure safe groundwater for use. According to the human health risk calculation, the groundwater Mo standard is suggested as 0.07 mg/L. Reduction the discharge of Mo-contaminated wastewater from factories in the industrial parks is also the important task in the future.

Adsorption behavior of Mo(VI) from aqueous solutions using tungstate-modified magnetic nanoparticle

“…Secondly is the neutron-induced fission of U-235 followed by the chemical separation of molybdenum-99 from uranium and other fission products (Rizk et al 2018 ). Molybdenum is one of the strategic metals used in several applications including the steel industry as an alloying agent, thermo-couples, heat-resistant materials, the petrochemical sector as a catalyst, semiconductor, anticathodes of X-ray tubes, vacuum tubes, radios, optoelectronic industries, electron tubes, and fuel cladding (Tsai et al 2016 ; Zeng and Cheng 2009 ; Xiong et al 2011a , b ; Gustafsson 2003 ). Furthermore, it has been proposed that advanced U–Mo nuclear fuel might be created by alloying uranium with molybdenum (Emam et al 2023 ).…”

Effects of Unconventional Water Agricultural Utilization on the Heavy Metals Accumulation in Typical Black Clay Soil around the Metallic Ore

“…Northeast China is extremely rich in metallic ore, especially in Anshan and other places, but the economic level is weak, and the treatment and utilization efficiency of water resources is low. The use of unconventional water is still in its infancy [13,14]. For some economic and technical reasons, some pollutants in unconventional water are not completely removed [15].…”

Preparation and Adsorption Properties of Chitosan-Modified Magnetic Nanoparticles for Removal of Mo (VI) ions

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Molybdenum is a necessary trace element for both plants and animals and is also an important resource. Nowadays, molybdenum is widely used in China's semiconductor and optoelectronic industries because of its high melting point, high temperature resistance, good corrosion resistance and good thermal conductivity [1]. In addition, molybdenum is found in corrosion inhibitors, fertilizers and alloys [2].

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