The National Iranian Copper Industries Company owns and operates three concentrators in the Islamic Republic of Iran. The largest of these three operations is the Sarcheshmeh complex, which has been in operation since the early 1980s and now treats over 65,000 tpd of copper ore. An expansion to 96,000 tpd is planned to come on stream in the next few years. Water is a limited resource in this very arid area the water management of the whole operation was reviewed when the expansion was proposed. A thickened tailings disposal scheme was proposed using twelve 24 m Eimco deep cone thickeners. This scheme would increase water recovery and allowed the existing tailings facility to be expanded with minimal cost to provide capacity for the next 30 years production. This paper outlines the design challenges associated with an installation of multiple thickeners and the unique solutions that have been used to provide a flexible plant design. https://papers.acg.uwa.edu.au/p/1104_22_MacNamara/ The Sarcheshmeh thickened tailings disposal project L. MacNamara et al.

Introduction: Nowadays, many people have bought and installed home water treatment devices (point-of-use drinking water treatment systems), as an essential measure, to improve their health. Materials and Methods: This cross-sectional study was conducted to evaluate the parameters of drinking water of Rafsanjan city and home water treatment device in summer 2017. Water samples at the inlet and outlet of the device with 15 day intervals for three months (approximately 48 samples, summer) were collected. Then, the concentration of heavy metals, total hardness, EC, sodium and nitrate were measured in inlet and outlet of treatment devices. All data were statistically analyzed by SPSS software version 18.   Results: The results showed that in the inlet water, the EC and pH values were in the standard ranges. The concentrations ​​of arsenic was higher than the permissible limits and other parameters including total hardness, calcium, sodium, magnesium, nitrate, copper, zinc and lead were lower than the standard limits. The highest reduction efficiency was obtained for copper, zinc and arsenic respectively, and the lowest reduction efficiency was reported for nitrate and calcium. Conclusion: Therefore, it can be concluded the devices could reduce the concentrations of the parameters under the standard limits. Due to the relationship between heart disease and light water, it is suggested that, in view of the high arsenic content in Rafsanjan water, filters at the inlet municipal water can be used to absorb heavy metals, especially arsenic.

Dietary exposure was introduced as the primary way Bisphenol A (BPA) enters the human body. Although significant efforts have been made to analyze BPA's presence in different foodstuffs, less attention has been given to introducing the conditions that facilitate BPA release. This review aimed to mention possible factors affecting BPA release into foods and beverages. According to the results, the critical factors in BPA release are temperature, manufacturing process, food and packaging type, pH, mineral elements, repeated use, irradiation, washing, contact time, and using detergents. It showed that using PC containers, high temperature and pH, storage under solar irradiation, alkaline detergents, water hardness, and repeated use could increase the BPA release from containers into foodstuff. During various conditions, hydrolysis of the carbonate linkage and d-spacing will increase. Considering these parameters and limiting the use of PC containers, the potential risk of BPA exposure could be eliminated.