Remediation of lead-contaminated groundwater by oyster shell powder–peanut shell biochar mixture

Liu, Xiaofeng; Dong, Xiaoqiang; Chang, Shiqi; Xu, Xin; Li, Jiashi; Pu, Hefu

doi:10.1007/s10653-023-01756-9

Cited by 5 publications

(2 citation statements)

References 50 publications

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“…Biochar is not only an effective material for environmental remediation but can also be used in other fields [51,52]. In environmental management, biochar can be used for several purposes, as shown in Figure 1, including the following: the improvement of soil quality [53,54], greenhouse emission reduction (mainly CO 2 ), climate change mitigation [55,56], waste and heavy metals management [57][58][59][60][61][62], and as adsorbent material for the removal of heavy metals from contaminated water [63][64][65][66][67]. The biochar applications shown in Figure 1 are in addition to its well-known use for modifying and improving the chemical-physical characteristics of soils, as reported in [68][69][70][71][72].…”

Section: Nmr (Nuclear Magnetic Resonance)mentioning

confidence: 99%

Biochar as Alternative Material for Heavy Metal Adsorption from Groundwaters: Lab-Scale (Column) Experiment Review

Viotti,

Marzeddu,

Antonucci

et al. 2024

Materials

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The purpose of this manuscript is to present a review of laboratory experiments (including methodology and results) that use biochar, a specific carbon obtained by a pyrolysis process from different feedstocks, as an alternative material for heavy metal adsorption from groundwater. In recent years, many studies have been conducted regarding the application of innovative materials to water decontamination to develop a more sustainable approach to remediation processes. The use of biochar for groundwater remediation has particularly attracted the interest of researchers because it permits the reuse of materials that would be otherwise disposed of, in accordance with circular economy, and reduces the generation of greenhouse gases if compared to the use of virgin materials. A review of the different approaches and results reported in the current literature could be useful because when applying remediation technologies at the field scale, a preliminary phase in which the suitability of the adsorbent is evaluated at the lab scale is often necessary. This paper is therefore organised with a short description of the involved metals and of the biochar production and composition. A comprehensive analysis of the current knowledge related to the use of biochar in groundwater remediation at the laboratory scale to obtain the characteristic parameters of the process that are necessary for the upscaling of the technology at the field scale is also presented. An overview of the results achieved using different experimental conditions, such as the chemical properties and dosage of biochar as well as heavy metal concentrations with their different values of pH, is reported. At the end, numerical studies useful for the interpretation of the experiment results are introduced.

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Section: Nmr (Nuclear Magnetic Resonance)mentioning

confidence: 99%

Biochar as Alternative Material for Heavy Metal Adsorption from Groundwaters: Lab-Scale (Column) Experiment Review

Viotti,

Marzeddu,

Antonucci

et al. 2024

Materials

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show abstract

“…Therefore, oyster shell can be considered to be combined with other materials with good water treatment potential to solve the limitation of a single adsorbent material to treat pollutants and enhance its water treatment capacity. Liu et al found that the adsorption capacity of lead from oyster shell pow-peanut shell biochar was 27 mg/g 42 . Gao et al prepared Cabiochar from oyster shell waste combined with wood waste for the remediation of AMD containing As(III).…”

mentioning

confidence: 99%

Adsorption properties of Pb(II) and Cd(II) in acid mine drainage by oyster shell loaded lignite composite in different morphologies

An,

Liu,

Chen

et al. 2024

Sci Rep

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A new idea to alleviate environmental pollution is the development of low-cost adsorbents using natural minerals and fishery wastes to treat high concentrations of heavy metal pollutants in acid mine drainage (AMD). Adsorbent morphology, adsorptive and regenerative capacity, and application potential are limiting factors for their large-scale use. Oyster shells capable of releasing alkalinity were loaded on the surface of lignite to develop two composite adsorbents with different morphologies (powdery and globular) for the treatment of AMD containing Pb(II) and Cd(II). The results show that the ability of the adsorbent to treat AMD is closely related to its morphologies. The pseudo-second-order kinetic model and the Langmuir model are suitable to describe the adsorption process of OS-M(P), and the maximum adsorption saturation capacities of Pb(II) and Cd(II) are 332.6219 mg/g and 318.9854 mg/g, respectively. The pseudo-second-order kinetic model and the Freundlich model are suitable to describe the adsorption process of OS-M(G). A synergistic result of electrostatic adsorption, neutralization precipitation, ion exchange and complex reaction is achieved in the removal of Pb(II) and Cd(II) by two morphologies of adsorbents. The regeneration times (5 times) and recovery rate (75.75%) of OS-M(G) are higher than those of OS-M(P) (3 times) and recovery rate (20%). The ability of OS-M(G) to treat actual AMD wastewater is still better than that of OS-M(P). OS-M(G) can be used as a promising environmentally friendly adsorbent for the long-term remediation of AMD. This study provides a comprehensive picture of resource management and reuse opportunities for natural mineral and fishery wastes.

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Effect of Pb(II) on hydraulic behavior and microstructure evolution of activated charcoal-bentonite-reticulated red clay barrier

Gao,

Li,

Yang

et al. 2024

Bull Eng Geol Environ

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Remediation of lead-contaminated groundwater by oyster shell powder–peanut shell biochar mixture

Cited by 5 publications

References 50 publications

Biochar as Alternative Material for Heavy Metal Adsorption from Groundwaters: Lab-Scale (Column) Experiment Review

Biochar as Alternative Material for Heavy Metal Adsorption from Groundwaters: Lab-Scale (Column) Experiment Review

Adsorption properties of Pb(II) and Cd(II) in acid mine drainage by oyster shell loaded lignite composite in different morphologies

Effect of Pb(II) on hydraulic behavior and microstructure evolution of activated charcoal-bentonite-reticulated red clay barrier

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