Analytical models are of vital importance to study the dynamics complex systems, including heap leaching process. In this work, a methodology copper recovery in by means fit analytical that capture product variations agents as function feeding is proposed, establishing first mode operation keeping agent fixed (H2SO4) and second mode, where Cl− added accelerate reaction kinetics sulfide minerals...

Dairy manure has been linked to elevated phosphorus (P) levels in surface waters of Lake Okeechobee basin. Prevalent soils of the basin (Aquods) retain little P in sandy, quartz-dominated upper horizons, and lateral P transport is favored by high water tables. The stability of manure-derived P forms is thus an important factor in the Okeechobee basin and other regions where soil and hydrologic ...

Abstract Mineralogical study showed that the Yuejin uranium ore is from a low grade, high carbonate and pyrite sandstone type deposit. Uranium leaching rate, speciation of leachate, kinetics precipitation analysis were investigated under conditions different acidity, liquid–solid ratio H 2 O concentration. The test results weak acid process can be used to develop deposits, however, because cont...

One concern for recycle and reuse of scrap tires is the leaching of tire constituents (organic and inorganic) with time, and their subsequent potential harmful impacts in environment. The main objective of this study was to examine the leaching of dissolved organic carbon (DOC), dissolved nitrogen (DN), and selected inorganic constituents from scrap tires. Different sizes of tire chips and crum...

Due to the increasing concern about the appearance of glyphosate [N-(phosphonomethyl)glycine] and its major metabolite aminomethylphosphonic acid (AMPA) in natural waters, batch laboratory and lysimeter transport studies were performed to assess the potential for leaching of the compounds in two agricultural soils. Unlabeled and 14C-labeled glyphosate were added at a rate corresponding to 1.54 ...

Imidacloprid (IMD) is a neonicotinoid pesticide soil-drenched to many crops to control piercing-sucking insects such as the Asian citrus psyllid (ACP). Neonicotinoids are persistent in the environment and transport analyses are helpful estimate leaching potential from soils that could result in groundwater pollution. The objective of this study was to analyze IMD breakthrough under saturated wa...

A choline chloride/urea natural deep eutectic solvent (ChCl NADES) was prepared via a green chemistry method and used to leach Zn Mn oxides from conventional Zn–C scrap batteries. FTIR 1H NMR spectroscopy were characterize the NADES. The leaching kinetics of monitored at isothermal conditions (80, 100, 125, 150 °C) two solid/NADES ratios: 3.3 10 g dm−3. It possible dissolve under all tested con...