Removal of iron, copper, and lead from aqueous solutions with zeolite, bentonite, and steel slag

Pfeifer, Anja; Škerget, Mojca; Čolnik, Maja

doi:10.1080/01496395.2020.1866607

Cited by 19 publications

(5 citation statements)

References 39 publications

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“…The pH of the above Pb 2+ test solution is about 7, This is consistent with that of previous reports [40][41][42]. Different pH solutions were prepared by using hydrochloric acid, sodium hydroxide, and deionized water, and the fiber-optic sensors were used to detect the solutions by using different pH.…”

Section: Sensor Stabilitysupporting

confidence: 88%

Fiber-optic lead ion sensor based on MXene film integrated michelson interference structure

Xiong¹,

Zhuang²,

Feng³

2023

Phys. Scr.

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Ti3C2Tx (MXene), a two-dimensional material prepared by solution etching, has abundant functional groups on its surface, which makes it have a great prospect in the field of biosensing environmental detection. In this work, a new optical fiber sensor integrated with MXene is proposed and fabricated. The sensor is constituted of a three-core fiber (TCF), a single-mode fiber (SMF), and a no-core fiber (NCF) to form a Michelson interference structure. The results indicate that MXene decorated fiber-optic sensor can detect trace lead ions (Pb2+) and has a good response to the Pb2+ solutions with the concentration of 0-100 μM. At 0.001 μM (i.e., 0.286 ppb) Pb2+, the response time is about 2 minutes. In addition, the fiber-optic sensor has excellent temperature, pH, and time stability. The present work provides a new idea for the detection of Pb2+ in heavy metal pollution fields.

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Section: Sensor Stabilitysupporting

confidence: 88%

Fiber-optic lead ion sensor based on MXene film integrated michelson interference structure

Xiong¹,

Zhuang²,

Feng³

2023

Phys. Scr.

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“…Considering the high toxicity response factor of copper (TR = 5) for different water bodies, we have to obtain an effluent with discharge concentrations lower than MCL to effectively avoid possible health risks. Cellulose acetate based biopolymeric mixed matrix membranes 84-88% [141] Chitosan-cellulose acetate-TiO 2 based membrane 97% [142] Ion exchange Y zeolite ion exchangers 64% [143] Ion exchange resin 99.14% [144] Electrochemical reaction Bipolar disc reactor 90.1% [145] Continuous electrochemical cell 91% [146] Bioelectrochemical and electrochemical systems 99.9% [147] Chemical precipitation OM in waste distillery slops-precipitation/coagulation 92% [148] Synthetic nesquehonite 99.97% [149] struvite 99.9% [150] Adsorption Hexagonal boron nitride 92% [151] Zeolite, bentonite, and steel slag 98.47-99.98% [152] Agro-industrial waste 89% [153] Biotechnology Stenotrophomonas maltophilia 88% [154] Microalgae >95% [155] Aspergillus australensis Biomass 79% [156] Table 3. Summary of different copper ion removal technologies [3,157,158].…”

Section: Conclusion and Outlooks For Cu(ii) Removal And Recoverymentioning

confidence: 99%

Removal of Copper Ions from Wastewater: A Review

Liu¹,

Wang

Cui

et al. 2023

IJERPH

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Copper pollution of the world’s water resources is becoming increasingly serious and poses a serious threat to human health and aquatic ecosystems. With reported copper concentrations in wastewater ranging from approximately 2.5 mg/L to 10,000 mg/L, a summary of remediation techniques for different contamination scenarios is essential. Therefore, it is important to develop low-cost, feasible, and sustainable wastewater removal technologies. Various methods for the removal of heavy metals from wastewater have been extensively studied in recent years. This paper reviews the current methods used to treat Cu(II)-containing wastewater and evaluates these technologies and their health effects. These technologies include membrane separation, ion exchange, chemical precipitation, electrochemistry, adsorption, and biotechnology. Thus, in this paper, we review the efforts and technological advances made so far in the pursuit of more efficient removal and recovery of Cu(II) from industrial wastewater and compare the advantages and disadvantages of each technology in terms of research prospects, technical bottlenecks, and application scenarios. Meanwhile, this study points out that achieving low health risk effluent through technology coupling is the focus of future research.

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“…Unfortunately, slag tailings are often directly deposited near industrial hubs without proper disposal practices [5]. Recent research has explored reusing slag tailings as additives for construction materials, concretes, and abrasives, demonstrating excellent soundness characteristics, abrasion resistance, and stability in thermally treated by-products [6][7][8][9][10][11]. However, to ensure environmental safety and inertness, thorough assessments are essential for potential recycling and engineering applications of slag tailings, especially concerning the elevated concentrations of metal(loid)s such as As, Pb, Cu, and Zn within these tailings [12,13].…”

Section: Introductionmentioning

confidence: 99%

Speciation Characterization and Environmental Stability of Arsenic in Arsenic-Containing Copper Slag Tailing

You,

Hu,

Zhou

et al. 2024

Molecules

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The increasing presence of arsenic-containing impurities within Cu ores can adversely affect the smelting process and aggravate the environmental impact of slag tailing. This study investigates the geochemical, mineralogical, and chemical speciation characteristics to better understand the association and environmental stability of metal(loid)s in copper slag tailing. The results indicate that the predominant chemical compositions of the selected slag tailing are Fe2O3 (54.8%) and SiO2 (28.1%). These tailings exhibit potential for multi-elemental contamination due to elevated concentrations of environmentally sensitive elements. Mineral phases identified within the slag tailings include silicate (fayalite), oxides (magnetite and hematite), and sulfides (galena, sphalerite, arsenopyrite, and chalcopyrite). The consistent presence of silicate, iron, arsenic, and oxygen in the elemental distribution suggests the existence of arsenic within silicate minerals in the form of Si-Fe-As-O phases. Additionally, arsenic shows association with sulfide minerals and oxides. The percentages of arsenite (As(III)) and arsenate (As(V)) within the selected slag tailings are 59.4% and 40.6%, respectively. While the slag tailings are deemed non-hazardous due to the minimal amounts of toxic elements in leachates, proper disposal measures should be taken due to the elevated carbonate-bound levels of As and Cu present in these tailings.

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Removal of iron, copper, and lead from aqueous solutions with zeolite, bentonite, and steel slag

Cited by 19 publications

References 39 publications

Fiber-optic lead ion sensor based on MXene film integrated michelson interference structure

Fiber-optic lead ion sensor based on MXene film integrated michelson interference structure

Removal of Copper Ions from Wastewater: A Review

Speciation Characterization and Environmental Stability of Arsenic in Arsenic-Containing Copper Slag Tailing

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