A critical review on lead removal from industrial wastewater: Recent advances and future outlook

Kumar, Vinay; Dwivedi, S.K.; Oh, Sung-Tag

doi:10.1016/j.jwpe.2021.102518

Cited by 69 publications

(22 citation statements)

References 265 publications

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“…While the removal from water and wastewater has become mandatory, the process itself is not easy because of their high migration activity, solubility, and stability in aqueous environment 4 . Numerous removal techniques were investigated so far, from classical phytoremediation, flocculation, or thermal treatment to cleaner biological processes or advanced membrane separation 5,6 . Among them, adsorption process (AP) is considered as one of the most feasible due to its energy-efficient and cost-effective operation, especially when large volumes of dilute solutions must be treated 7,8 .…”

mentioning

confidence: 99%

Full factorial design and dynamic modelling of silent and ultrasound-assisted lead and cadmium removal by porous biosorbent

Ahmed

Dobre

Kamar

et al. 2022

Sci Rep

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Present work aimed to analyse single and competitive lead and cadmium batch adsorption, using experimental studies and mathematical modelling. The experiments were conducted in silent and ultrasound-assisted systems, in aqueous environment, using grinded hazelnut shells as porous biosorbent. The influence of process factors (pH, adsorbent concentration, adsorbent particle size, and initial species concentration in liquid phase) on species removal efficiency was evaluated when process equilibrium was attained. The statistical study, following a 24 factorial experimental design, allowed the development of a model to predict variables influence. Based on the obtained results a deeper analysis of the separation efficiency, depending on process factors, was conducted. The dynamic study was performed based on experimentally obtained removal rates, modelled considering species diffusion, with reversible kinetics of sorption inside solid particles. Hence, the dynamics of removal efficiency was determined for several representative experiments. The equilibrium isotherms data, best fitted by an appropriate Langmuir model, were used in the dynamic model to reduce the number of model parameters which normally require experimental identification.

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mentioning

confidence: 99%

Full factorial design and dynamic modelling of silent and ultrasound-assisted lead and cadmium removal by porous biosorbent

Ahmed

Dobre

Kamar

et al. 2022

Sci Rep

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“…Overall, MMOFs with a high surface area containing heteroatoms appear to be the most efficient in removing Pb 2+ . At the time of writing this article, the highest reported adsorption capacity of MMOFs for removal of Pb 2+ is 1600 mg g –1 (Table ), which is one of the highest reported adsorption capacities toward Pb 2+ by any adsorbent …”

Section: Removal Of Heavy Metals From the Environment Via The Mspe Me...mentioning

confidence: 97%

“…At the time of writing this article, the highest reported adsorption capacity of MMOFs for removal of Pb 2+ is 1600 mg g −1 (Table 2), which is one of the highest reported adsorption capacities toward Pb 2+ by any adsorbent. 65 In 2018, Yoon and co-workers synthesized biocompatible polymer-capped (PFe 3 O 4 ) NPs embedded in NH 2 -MIL-125(Ti) composite for the removal of lead ions; potato peels as the source of organic polymer were employed in an ecofriendly protocol. Initially, the polymer was extracted from potato peels and used to fabricate PFe 3 O 4 followed by its addition to the mixture containing MOF precursors in varying Selective removal of Pb 2+ was assessed in the presence of a 1 ppm concentration of various metallic ions, which indicated its excellent selectivity; the adsorption capacity of the applied MMOF was 561.7 mg g −1 for Pb 2+ ions at pH 5 and 298 K. Studies on the adsorption mechanism revealed that the adsorption of the Pb 2+ ions by pFe 3 O 4 @NH 2 -MIL-125(Ti) had been a result of the cooperation of the amine group of the MOF and the −OH group of the biopolymer.…”

Section: Mspe-based Removal Of Lead Ions Using Mmofsmentioning

confidence: 99%

Magnetite Metal–Organic Frameworks: Applications in Environmental Remediation of Heavy Metals, Organic Contaminants, and Other Pollutants

et al. 2022

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Due to the increasing environmental pollution caused by human activities, environmental remediation has become an important subject for humans and environmental safety. The quest for beneficial pathways to remove organic and inorganic contaminants has been the theme of considerable investigations in the past decade. The easy and quick separation made magnetic solid-phase extraction (MSPE) a popular method for the removal of different pollutants from the environment. Metal−organic frameworks (MOFs) are a class of porous materials best known for their ultrahigh porosity. Moreover, these materials can be easily modified with useful ligands and form various composites with varying characteristics, thus rendering them an ideal candidate as adsorbing agents for MSPE. Herein, research on MSPE, encompassing MOFs as sorbents and Fe 3 O 4 as a magnetic component, is surveyed for environmental applications. Initially, assorted pollutants and their threats to human and environmental safety are introduced with a brief introduction to MOFs and MSPE. Subsequently, the deployment of magnetic MOFs (MMOFs) as sorbents for the removal of various organic and inorganic pollutants from the environment is deliberated, encompassing the outlooks and perspectives of this field.

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“…However, this method did not solve the problem of lead contamination in drinking water. The World Health Organization (WHO) has established the guideline that lead concentrations in drinking water should not to exceed 0.01 mg/L [ 7 ]. Thus, it is important to find an effective method to treat lead-contaminated water, especially for drinking.…”

Section: Introductionmentioning

confidence: 99%

“…The challenges in removing lead from wastewater is that it is highly persistent, meaning lead is in its elemental form, and hence cannot be degraded into a less dangerous form [ 8 ]. In addition, lead can be highly toxic and harmful to living organisms even at trace levels [ 7 ]. Heavy metals such as lead can be removed from wastewater through physical and chemical methods.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Inorganic Organic PSF/Hap Dual-Layer Hollow Fibre Membrane for the Treatment of Lead Contaminated Water

et al. 2023

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Lead (Pb) exposure can be harmful to public health, especially through drinking water. One of the promising treatment methods for lead contaminated water is the adsorption-filtration method. To ensure the cost-effectiveness of the process, naturally derived adsorbent shall be utilised. In this study, hydroxyapatite particles, Ca10(PO4)6(OH)2 (HAP) derived from waste cockle shell, were incorporated into the outer layer of polysulfone/HAP (PSf/HAP) dual-layer hollow fibre (DLHF) membrane to enhance the removal of lead from the water source due to its hydrophilic nature and excellent adsorption capacity. The PSf/HAP DLHF membranes at different HAP loadings in the outer layer (0, 10, 20, 30 and 40 wt%) were fabricated via the co-extrusion phase inversion technique. The performance of the DLHF membranes was evaluated in terms of pure water flux, permeability and adsorption capacity towards lead. The results indicated that the HAP was successfully incorporated into the outer layer of the membrane, as visibly confirmed by microscopic analysis. The trend was towards an increase in pure water flux, permeability and lead adsorption capacity as the HAP loading increased to the optimum loading of 30 wt%. The optimized DLHF membrane displayed a reduced water contact angle by 95%, indicating its improved surface hydrophilicity, which positively affects the pure water flux and permeability of the membrane. Furthermore, the DLHF membrane possessed the highest lead adsorption capacity, 141.2 mg/g. The development of a hybrid inorganic–organic DLHF membrane via the incorporation of the naturally derived HAP in the outer layer is a cost-effective approach to treat lead contaminated water.

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A critical review on lead removal from industrial wastewater: Recent advances and future outlook

Cited by 69 publications

References 265 publications

Full factorial design and dynamic modelling of silent and ultrasound-assisted lead and cadmium removal by porous biosorbent

Full factorial design and dynamic modelling of silent and ultrasound-assisted lead and cadmium removal by porous biosorbent

Magnetite Metal–Organic Frameworks: Applications in Environmental Remediation of Heavy Metals, Organic Contaminants, and Other Pollutants

Hybrid Inorganic Organic PSF/Hap Dual-Layer Hollow Fibre Membrane for the Treatment of Lead Contaminated Water

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