Modification of calcium-rich biochar by loading Si/Mn binary oxide after NaOH activation and its adsorption mechanisms for removal of Cu(II) from aqueous solution

Liu, Juan; Yang, Xiao‐Yu; Liu, Honghao; Cheng, Wei; Bao, Yongchao

doi:10.1016/j.colsurfa.2020.124960

Cited by 72 publications

(16 citation statements)

References 68 publications

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“…Ion exchange implies the mechanism through which acidic oxygen-containing functional groups like hydroxyl groups, carboxyl groups, and carbonyl groups of biochar ionize H + or soil base ions like Ca 2+ , Na 2+ , Mg 2+ , and K + for the exchange of heavy metal ions or cationic organic contaminants. Ion exchange was the dominant mechanism when Carich biochar filled with Si/Mn binary oxides was applied for extracting Cu(II) under a wide range of pH (Liu et al 2020a). Similarly, Dad et al (2020) reported that the ionexchange mechanism was one of the processes involved in the extenuating toxicity and accumulation of Cd in soil and radish plants via the application of iron-enriched biochar (Fe-BC).…”

Section: Ions Exchangementioning

confidence: 99%

Biochar for the Management of Nutrient Impoverished and Metal Contaminated Soils: Preparation, Applications, and Prospects

Murtaza

Ditta

Ullah

et al. 2021

J Soil Sci Plant Nutr

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The present review highlights the recent advancements regarding the use of biochar for the management of nutrient impoverished and metal contaminated soils. It includes a detailed discussion on the preparation, applications, and prospects of biochar for sustainable agriculture and environmental sustainability. Biochar is a sensible and robust material for the enhancement of soil fertility and management of contaminated soils for sustainable agriculture and mitigation of climate change. The properties of biochar are dependent on the type of feedstocks, pyrolysis temperature, residence/retention time, flow rate of gas, and modification characteristics of biochar. The use of biochar can improve the physicochemical and biological properties of soil, which results in enhanced crop growth and productivity under normal conditions, as well as in soils that pose abiotic stresses because of the presence of heavy metals, salt, or organic contaminants. Biochar remains unaltered in the soil for a long time, thereby contributing to soil organic carbon, mitigation of greenhouse gases, and ultimately contributing to the mitigation of climate change. The proposed research guidelines recommend prolonged field trials to assess the ecological impacts of biochar in soil, as well as its production, with the aim of increasing agricultural and environmental sustainability. Furthermore, the related processes can be effectively deliberated for exploiting the overall efficacy of the biochar modifications.

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Section: Ions Exchangementioning

confidence: 99%

Biochar for the Management of Nutrient Impoverished and Metal Contaminated Soils: Preparation, Applications, and Prospects

Murtaza

Ditta

Ullah

et al. 2021

J Soil Sci Plant Nutr

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“…K L values were obtained from the Langmuir isotherm model. As shown in Table 3 , R L was between 0.525 and 0.155, and the range from 0 to 1 means that the adsorption process of Cu(II) was theoretically favorable [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

Mild Hydrothermal Synthesis of 11Å-TA from Alumina Extracted Coal Fly Ash and Its Application in Water Adsorption of Heavy Metal Ions (Cu(II) and Pb(II))

Yang

Sun

Peng

et al. 2022

IJERPH

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Non-biodegradable copper (Cu) and lead (Pb) contaminants in water are highly toxic and have series adverse effects. Therefore, it is very important to extract heavy metals from wastewater before it is discharged into the environment. Adsorption is a cost-effective alternative method for wastewater treatment. Choosing a low-cost adsorbent can help reduce the cost of adsorption. In this study, conversion of reside after extracting aluminum (REA) produced by sub-molten salt method transform high-alumina coal fly ash (CFA) into 11Å-tobermorite to adsorb Cu(II) and Pb(II) from aqueous solutions at room temperature. The synthesis of the adsorbent was confirmed using scanning electron microscope (SEM), X-ray diffractometer (XRD) and Brunauer–Emmett–Teller (BET) method surface analysis. To study the adsorption characteristics, factors such as initial Cu(II) and Pb(II) concentration, pH, contact time, adsorption characteristics and temperature were investigated in batch mode. The maximum adsorption capacity of Cu(II) and Pb(II) was 177.1 mg·g−1 and 176.2 mg·g−1, respectively. The Langmuir adsorption model was employed to better describe the isothermal adsorption behavior and confirm the monolayer adsorption phenomenon. The pseudo-second-order kinetic model was used to highlight Cu(II) and Pb(II) adsorption kinetics. Thermodynamic analysis indicated the removal Cu(II) and Pb(II) by TA-adsorbent was a nonspontaneous and exothermic reaction. The obtained results are of great significance to the conversion of industrial waste to low-cost adsorbent for Cu(II) and Pb(II) removal from water.

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“…Figure 5b shows the mineralogical composition of SSB. Illustrating highly crystalline structures due to revealing numerous sharp peaks (Liu et al 2020…”

Section: Xrd Analysismentioning

confidence: 99%

“…vibration of C = O, C = C aromatic rings(Shin et al 2020), the peaks at 1015 cm − 1 and 775 cm − 1 were attributed to the stretching vibration of -OH and C-H of aromatic rings(Liu et al 2020), respectively. Indicating that SSB contained several kinds of functional groups, These groups play a heavy role to reduce Pb and Cr in soil have been widely reported, for example,Zhao et al (2021) found that Ocontaining groups positive participation Cr(VI) removal,Wang et al (2018) reported that -OH was involved in the interaction with Pb(II) ion by the ion exchange reaction.…”

mentioning

confidence: 99%

Passivation and remediation of Pb and Cr in contaminated soil by sewage sludge biochar tubule

Chen

et al. 2021

Environ Sci Pollut Res

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Currently, numerous studies have carried out to research the effect of biochars remediation soil heavy metals (HMs) contaminated, but there have been fewer explorations of the effect of biochars tubule on soil HMs remediation. This work aimed was to study the effect of passivation and remediation of lead (Pb) and chromium (Cr) contaminated soil after insert sewage sludge biochar (SSB) tubule. The results showed that the high risky fractions of Pb and Cr could be transformed into more stable fractions, also, Pb and Cr total contents are signi cantly decreased by SSB tubule. The mechanisms including adsorption, ion exchange, complexation and precipitation which are concluded from the characteristic analysis. Detailly, the passivation of Pb and Cr are better when the moisture at 25% and 35%, respectively, [Pb: exchangeable (F1), carbonate bound (F2) decreased by 25.1%, 16.8%, Fe-Mn oxides bound (F3) increased by 18.5%; Cr: F1 decreased by 73.0%, F2, F3, Organic matter bound (F4) increased by 13.2%, 23.9%, 30.8%), respectively]. The remediation of Pb and Cr is better when the moisture at 25% and 35%, respectively, (Pb: decreased by 23.3%; Cr: decreased by 38.4%, respectively). The ndings showed that the SSB tubule is effective when used for soil HMs contaminated.

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Modification of calcium-rich biochar by loading Si/Mn binary oxide after NaOH activation and its adsorption mechanisms for removal of Cu(II) from aqueous solution

Cited by 72 publications

References 68 publications

Biochar for the Management of Nutrient Impoverished and Metal Contaminated Soils: Preparation, Applications, and Prospects

Biochar for the Management of Nutrient Impoverished and Metal Contaminated Soils: Preparation, Applications, and Prospects

Mild Hydrothermal Synthesis of 11Å-TA from Alumina Extracted Coal Fly Ash and Its Application in Water Adsorption of Heavy Metal Ions (Cu(II) and Pb(II))

Passivation and remediation of Pb and Cr in contaminated soil by sewage sludge biochar tubule

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