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New Paradigms for Sustainable Mineral Processing
Published in Sheila Devasahayam, Kim Dowling, Manoj K. Mahapatra, Sustainability in the Mineral and Energy Sectors, 2016
Water is a precious commodity, becoming increasingly more regulated around the world. In the case of Baia Mare, large quantities of important water resources were contaminated due to poor mineral processing operating discipline and design. Smart water use and clean water output are key in keeping the global ecosystem uncontaminated by industrial processes. Effective water management, recycling, and treatment are and will continue to be crucial in developing sustainable operations. The two fundamental issues the mining industry will face with regard to water are Conserving the water currently used to minimize the need to draw more from available, but possibly limited supplies.Controlling accumulation of heavy metals, sulfates, nitrates, acids, and process chemicals in process water, and proper treatment and removal of these substances to reduce or eliminate contamination to water supplies.
Improvement Activities and Projects
Published in Ian Madden, Always Making Progress, 2022
Product accumulation such as ‘accumaveyors' may be required between stages to accommodate minor stops and changeovers. Accumulation to accommodate process failures should be avoided as this creates unnecessary inventory, takes up floor space, increases the costs and masks quality failures.
Generators Who Accumulate Hazardous Wastes Onsite Less Than 90 Days
Published in Gary F. Lindgren, Managing Industrial Hazardous Waste, 2018
Accumulation areas must be maintained and operated to minimize the possibility of a fire, explosion, or any unplanned sudden or gradual release of hazardous waste or hazardous waste constituents to air, soil, or surface water that could threaten human health or the environment.
Novel iminodiacetic acid functionalized basalt fiber for adsorption of Cu (II) ions in batch experiments
Published in Journal of Dispersion Science and Technology, 2023
Yue Sun, Pengyu Zhang, Qingyi Zha, Yihan Huang, Weisheng Zheng, Caiqian Yang, Zhiren Wu
Water pollution caused by heavy metal ions, mainly from metal ion-containing sewage generated in industrial production processes such as tanning, chemical engineering, electroplating and electronics, is a severe issue for the environment and human health worldwide.[1,2] Heavy metal ions are persistent and easily accumulate in the human body, which can cause serious chronic diseases.[3,4] For example, when the copper in the human body exceeds the safe amount, it will cause adverse effects such as immunotoxicity and developmental toxicity.[5] Excessive chromium intake leads to abdominal pain, carcinogenesis, and blood diseases.[6] Mercury ions accumulation affects the metabolic functions of the human body, resulting in symptoms of poisoning.[7] Hence there is an urgent need for the removal of heavy metals from wastewater.
Cadmium induces cytotoxicity in normal mouse renal MM55.K cells
Published in International Journal of Environmental Health Research, 2022
Ho Jeong Lee, Ju Hong Lee, Seon Min Lee, Na Hyun Kim, Yeon Gyu Moon, Tae Kil Tak, Moonjung Hyun, Jeong Doo Heo
Cd is an element commonly found on the earth’s surface and is a silver-white, shiny metal that exists in nature in combination with oxygen, chlorine, and sulfur. Cd, which enters the body from the environment, is not easily excreted and its accumulation in the body increases with age due to its long biological half-life. People who have been exposed to Cd-contaminated environments are known to have high blood pressure, circulatory diseases, and anemia (Jaishankar et al. 2014). Cd intoxication, known as itai–itai disease, is caused by the accumulation of Cd in the bone instead of calcium, which causes bone abnormalities and skeletal contractions (Tchounwou et al. 2012). Cd causes a wide range of deleterious cellular events including abnormal proliferation, apoptosis, and carcinogenesis (Waisberg et al. 2003; Rani et al. 2014). The cytotoxic effects of Cd in the liver and kidney (Satarug et al. 2017), such as apoptotic cell production, the formation of nuclear DNA fragmentation, and release of mitochondrial apoptotic proteins after exposure to CdCl2, accompanied by ROS generation, have been extensively studied.
Current research and perspectives on microalgae-derived biodiesel
Published in Biofuels, 2020
Kartik Singh, Deeksha Kaloni, Sakshi Gaur, Shipra Kushwaha, Garima Mathur
For industrialized production of algal feedstock, an ideal strain should be highly productive along with a high lipid accumulation efficiency, as these factors code for the quantity of biodiesel produced by any given microalgal culture. Most microalgal species do not produce high amounts of lipids in the log phase. However, when they come across a nitrogen-deficient environment, they slow down their rate of biomass production and start producing energy storage products such as lipids and starch [149]. However, it is observed that an increasing rate of lipid synthesis could result in cell division reduction. In this case, overexpression of genes controlling lipid synthesis may be very beneficial if they are controllable by an inducible promoter that can be activated once the cells in the culture have reached high densities and entered the stationary phase [150]. Another approach to increased lipid accumulation is to decrease lipid catabolism. Studies have shown that knocking out genes of some enzymes that are vital for lipid catabolism, e.g. acyl CoA oxidase and acyl CoA synthase, will aid in increasing lipid storage [151].