Application of magnetic ferrite nanoparticles for removal of Cu(II) from copper-ammonia wastewater

Fang, Liu; Zhou, Kanggen; Chen, Quanzhou; Wang, Aihe; Chen, Wei

doi:10.1016/j.jallcom.2018.09.240

Cited by 55 publications

(10 citation statements)

References 61 publications

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“…Copper-ammonia complexes are soluble and stable. Their formation could prevent copper carbonate bonding and subsequent precipitation [47]. This issue would require pH control to induce the formation of copper carbonates, as indicated by [45].…”

Section: Copper Removalmentioning

confidence: 99%

Testing the Capacity of Staphylococcus equorum for Calcium and Copper Removal through MICP Process

et al. 2021

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This research focused on the evaluation of the potential use of a soil-isolated bacteria, identified as Staphylococcus equorum, for microbial-induced calcite precipitation (MICP) and copper removal. Isolated bacteria were characterized considering growth rate, urease activity, calcium carbonate precipitation, copper tolerance as minimum inhibitory concentration (MIC) and copper precipitation. Results were compared with Sporosarcina pasteurii, which is considered a model bacteria strain for MICP processes. The results indicated that the S. equorum strain had lower urease activity, calcium removal capacity and copper tolerance than the S. pasteurii strain. However, the culture conditions tested in this study did not consider the halophilic feature of the S. equorum, which could make it a promising bacterial strain to be applied in process water from mining operations when seawater is used as process water. On the other hand, copper removal was insufficient when applying any of the bacteria strains evaluated, most likely due to the formation of a copper–ammonia complex. Thus, the implementation of S. equorum for copper removal needs to be further studied, considering the optimization of culture conditions, which may promote better performance when considering calcium, copper or other metals precipitation.

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Section: Copper Removalmentioning

confidence: 99%

Testing the Capacity of Staphylococcus equorum for Calcium and Copper Removal through MICP Process

et al. 2021

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“…Furthermore, its magnetic feature allows for easy recovery after use [17,18]. It was recently investigated as an adsorbent for the removal of cadmium (Cd 2+ ) [19]. Additionally, an ammonium-pillared MT/Fe 3 O 4 nanocomposite was synthesised for caesium (Cs + ) removal from water and soil [20].…”

Section: Introductionmentioning

confidence: 99%

Montmorillonite-anchored magnetite nanocomposite for recovery of ammonium from stormwater and its reuse in adsorption of Sc3+

Song

Srivastava

Kohout

et al. 2021

Nanotechnol. Environ. Eng.

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The treatment of stormwater to remove and recover nutrients has received increasing interest. The objective of this study was to develop a novel adsorbent that is easy to handle, has good adsorption capacity, and is economical to use. A novel nanocomposite of montmorillonite (MT)-anchored magnetite (Fe3O4) was synthesised by co-precipitation as an adsorbent for ammonium. The MT/Fe3O4 nanocomposite had pore sizes (3–13 nm) in the range of narrow mesopores. The dispersion of the anchored Fe3O4 was confirmed by transmission electron microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy (XPS). The nanocomposite exhibited higher affinity towards ammonium than the original MT. The Langmuir isotherm model was found to be the most suitable model to explain the ammonium adsorption behaviour of the nanocomposite. The maximum adsorption capacity for ammonium was 10.48 mg/g. The adsorption mechanism was a combination of ion exchange and electrostatic interaction. In an authentic stormwater sample, the synthesised adsorbent removed 64.2% of ammonium and reduced the amount of heavy metal contaminants including Mn, Ni, Cu and Zn. Furthermore, the ammonium loading on MT/Fe3O4 during adsorption functionalised the adsorbent surface. Additionally, the spent nanocomposite showed potential for rare earth elements (REEs) adsorption as a secondary application, especially for the selective adsorption of Sc3+. The versatile application of montmorillonite-anchored magnetite nanocomposite makes it a promising adsorbent for water treatment. Graphic abstract

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“…For instance, copper which is regularly released from various industrial activities including smelting, fertilizer, electroplating, mining and other metal finishing industries, petrochemical and electrical cable productions could have various health effects on human. Human exposure to excess copper may result in upper abdominal pain, diarrhea, nausea, vomiting, hepatic and renal dysfunction, various types of cancer and even death (Liu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Copper scavenging efficiency of adsorbents prepared from Raphia hookeri fruit waste

Inyinbor

Adekola

Olatunji

2019

Sustainable Chemistry and Pharmacy

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Low cost adsorbents prepared from the epicarp of Raphia hookeri fruit were used for the removal of copper (II) ion from aqueous solution. The effects of operational parameters such as pH, concentration and contact time, dosage as well as interference of other ions were studied. Optimum pH for raw and modified biomass were 5.0 and 5.5 with percentage removal of 75.08% and 95.62% respectively. Concentration of competing ions greatly reduced Cu 2+ removal with both adsorbents while agitation speed had negligible effect on Cu 2+ uptake. Adsorbents surfaces were activated as temperature increased thus enhancing adsorbent adsorption capacity at high temperature. Adsorption kinetic data fitted best into the pseudo second order model while the thermodynamics studies confirmed adsorption spontaneity and feasibility. The Freundlich adsorption isotherm best described the adsorption process and the Langmuir maximum monolayer adsorption capacity for the raw (RHE) and acid treated (ARHE) biomass were 81.97 and 103.09 mg/g respectively. Chemisorption predominate the Cu 2+ -ARHE system hence desorption efficiency was obtained to be 72.65% with CH 3 COOH as eluent.

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Application of magnetic ferrite nanoparticles for removal of Cu(II) from copper-ammonia wastewater

Cited by 55 publications

References 61 publications

Testing the Capacity of Staphylococcus equorum for Calcium and Copper Removal through MICP Process

Testing the Capacity of Staphylococcus equorum for Calcium and Copper Removal through MICP Process

Montmorillonite-anchored magnetite nanocomposite for recovery of ammonium from stormwater and its reuse in adsorption of Sc3+

Copper scavenging efficiency of adsorbents prepared from Raphia hookeri fruit waste

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