effect of graphite on copper bioleaching from waste

Iron and Copper Recovery/Removal from Industrial

Surface finishing of steel sheets and strips for the removal of iron oxide scale generates a huge amount of waste sulfate/chloride pickle liquor. Similarly large quantity of bleed stream is generated in the electrolysis industries due to the build up of acidity and metal impurity. The nature of the waste generated has become complex and hazardous in nature. Their impacts on ecological bodies

Iron and Copper Recovery/Removal from Industrial

Surface finishing of steel sheets and strips for the removal of iron oxide scale generates a huge amount of waste sulfate/chloride pickle liquor. Similarly large quantity of bleed stream is generated in the electrolysis industries due to the build up of acidity and metal impurity. The nature of the waste generated has become complex and hazardous in nature. Their impacts on ecological bodies

Techno

A bioleaching process to extract rare-earth elements (REE) from fluidized catalytic cracking (FCC) catalysts was optimized using a heterotrophic bacterium Gluconobacter oxydans to produce organic acids from glucose. Parameters optimized included agitation intensity, oxygen levels, glucose concentrations, and nutrient additions. Biolixiviants from the optimized batch process demonstrated REE

Challenges for continuous graphene as a corrosion

2019/2/27Like graphite (Tucker et al 1990, Sloan and Talbot 1992, Zahran et al 1996, Xu et al 2011), the high nobility of graphene makes it cathodic to most metals (including, for instance, copper, nickel, aluminium, magnesium, iron and steel), and promotes their galvanic

Enhancement of simultaneous gold and copper recovery

1. Waste Manag. 2016 Nov;57:158-167. doi: 10.1016/j.wasman.2016.05.012. Epub 2016 Jun 2. Enhancement of simultaneous gold and copper recovery from discarded mobile phone PCBs using Bacillus megaterium: RSM based optimization of effective factors and

Spectroscopic Studies of the Physical Origin of Environmental Aging Effects

4 To prepare doped monolayer graphene, a graphene-on-copper sample was first placed in the middle of a graphite confinement and immersed in the ammonium persulfate etchant (Alfa Aesar, 0.2M) to etch away the copper substrate. After the copper foil was

Bioleaching of heavy metals from dewatered sludge by

Since, At. ferroosidans was highly effective leaching mediator used in commercial bioleaching facilities and industrial waste sludge (Kim et.al. 2005). Besides that, At. ferroosidans is highly applicable to open-systems as this acidophilic, chemoautotrophic bacterium acquires carbon source from atmospheric CO 2 and is resistance to contamination (Kim et.al. 2005).

Minerals

The efficient extraction of copper as a valuable metal from waste printed circuit boards (WPCBs) is currently attracting growing interest. Here, we systematically investigated the impact of bacteria on the efficiency of copper leaching from WPCBs, and evaluated the effect of graphite on bioleaching performance. The HQ0211 bacteria culture containing Acidithiobacillus ferrooxidans, Ferroplasma

Continuity of Graphene on Polycrystalline Copper

The atomic structure of graphene on polycrystalline copper substrates has been studied using scanning tunneling microscopy. The graphene overlayer maintains a continuous pristine atomic structure over atomically flat planes, monatomic steps, edges, and vertices of the copper surface. We find that facets of different identities are overgrown with graphene's perfect carbon honeycomb lattice

purification of copper by electrolysis metal extraction

Finite reserves of copper ores are becoming scarce and new ways of extracting copper from low-grade ores include phytomining, and bioleaching. Low grade ores only contain small concentrations of copper and would not normally be considered economic to mine and process, as would waste material from processing high grade copper ores.

Graphene oxide from Indonesian biomass: Synthesis and

Graphene oxide (GO) was synthesized from graphite and also produced from waste materials, such as coconut shell, rice husk, and bagasse. The GO obtained from pure graphite was compared with graphite made from Indonesian biomass (coconut shell, rice husk, and

Optimization Studies on Recovery of Metals from Printed

The aim of the study was to recover copper and lead metal from waste printed circuit boards (PCBs). The electrowinning method is found to be an effective recycling process to recover copper and lead metal from printed circuit board wastes. In order to simplify the process with affordable equipment, a simple ammonical leaching operation method was adopted. The selected PCBs were incinerated

Innovations: How Hydrometallurgy and the SX/EW

Copper is traditionally known as the red metal after its natural color. However, it is also known as a green metal for the green patina that it acquires due to weathering. Indeed, patinized copper is the architectural focal point of many modern buildings for its natural

Ultrahigh

INTRODUCTION Chemical vapor deposition (CVD) on copper (1–11) is a convenient alternative to epitaxial growth (12–16) for obtaining large graphene crystals.However, to serve as channel material in electronic devices such as high-frequency transistors (), Hall sensors (), and various other applications (), CVD-grown graphene needs to be transferred from the growth substrate (typically

Synthetic biology approaches to copper remediation:

The most widespread method for copper biomining is bioleaching: the extraction of soluble copper from complex solid mixtures (Gumulya et al. 2018). Therefore, it is not surprising that bioleaching has been the focus of recent approaches to copper2016et al. 2015

Enhanced Cr bioleaching efficiency from tannery sludge

References M. Erdem, Chromium recovery from chrome shaving generated in tanning process, J. Hazard. Mater., 129 (2006) 143–146. G. Zheng, L. Zhou, S. Wang, An acid-tolerant heterotrophic microorganism role in improving tannery sludge bioleaching

Bioleaching of gold, copper and nickel from waste

Chi TD, Lee J, Pandey BD et al. (2011) Bioleaching of gold and copper from waste mobile phone PCBs by using a cyanogenic bacterium. Miner Eng 24:1219–1222. [ Links ] Choi M, Cho K, Kim D et al. (2004) Microbial recovery of copper from printed circuit.

Effect of carbonaceous matter on bioleaching of Cu from

2020/8/1Catalytic effect of activated carbon on bioleaching of low-grade primary copper sulflde ores Trans. Nonferrous Metals Soc. China, 17 ( 2007 ), pp. 1123 - 1127, 10.1016/S1003-6326(07)60236-2 Article Download PDF View Record in Scopus Google Scholar

Challenges for continuous graphene as a corrosion

2019/2/27Like graphite (Tucker et al 1990, Sloan and Talbot 1992, Zahran et al 1996, Xu et al 2011), the high nobility of graphene makes it cathodic to most metals (including, for instance, copper, nickel, aluminium, magnesium, iron and steel), and promotes their galvanic

Role of humic acid in bioleaching of copper from waste

2020/11/1Table 8 also shows the effect of other additives (e.g., graphene, graphite) on bioleaching of copper from waste printed circuit boards. Tong et al. and Gu et al. ( Gu et al., 2017 ; Tong et al., 2020 ) proposed that graphene and graphite can improve the leaching percent of copper in waste printed circuit boards, but the leaching rate of copper did not increase.

(PDF) Recovery of precious metals from e

About66% of e-waste by weight consists of metals such as iron, silver, aluminum, gold and non-ferrous metals such as copper. E-waste recycling means breaking down obsolete electronic materials to recover valuable materials which can be reused in another device or processed into a new product.

Facile and Cost

The recovery of copper (Cu0) from waste printed circuit boards (WPCBs) is a great challenge as a result of its heterogeneous structural properties, with a mixture of metals, epoxy resin, and fiberglass. In this study, a three-step sequential process, including mechanochemical processing, water leaching, and recrystallization, for Cu0 recovery from WPCB powder is reported. Potassium persulfate

Innovations: How Hydrometallurgy and the SX/EW

Copper is traditionally known as the red metal after its natural color. However, it is also known as a green metal for the green patina that it acquires due to weathering. Indeed, patinized copper is the architectural focal point of many modern buildings for its natural

Graphite oxide

Graphite oxide, formerly called graphitic oxide or graphitic acid, is a compound of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers and acids for resolving of extra metals.The maximally oxidized bulk product is a yellow solid with C:O ratio between 2.1 and 2.9, that retains the layer structure of graphite but with a much larger and irregular

Optimization Studies on Recovery of Metals from Printed

The aim of the study was to recover copper and lead metal from waste printed circuit boards (PCBs). The electrowinning method is found to be an effective recycling process to recover copper and lead metal from printed circuit board wastes. In order to simplify the process with affordable equipment, a simple ammonical leaching operation method was adopted. The selected PCBs were incinerated

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