The sorption and short-term immobilization of lead and cadmium by nano-hydroxyapatite/biochar in aqueous solution and soil

Zhou, Cailing; Song, Xin; Wang, Yiwei; Wang, Hui; Ge, Shifu

doi:10.1016/j.chemosphere.2021.131810

Cited by 55 publications

(14 citation statements)

References 52 publications

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“…The FTIR spectral profiles recorded for HAP, BBC, BBC-HAP and BBC-HAP-Colorant are shown in Figure 3 c. The hydroxyl group in BBC or HAP is represented by the stretching vibration of the -OH group at 3416 cm −1 [ 38 , 39 ]. The band located at 1618 cm −1 was assigned to the −COO in CO 3 2− in HAP [ 40 ], and the 1560 cm −1 and 1170 cm −1 peaks observed in the spectrum profile for BBC are attributed to the stretching vibration of the C-C bond and C-O, respectively [ 41 , 42 , 43 ]. In addition, the HAP contains a P-O (V 3 ) band of 1034 cm −1 and O-P-O (V 4 ) bands of 603 cm −1 and 566 cm −1 [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

Effective Adsorption of Colorants from Sugarcane Juice by Bagasse-Based Biochar-Hydroxyapatite Composite

Wang

Luo

Xie

et al. 2022

Foods

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The clarification of sugarcane juice is a crucial stage in the sugar manufacturing process, as it affects evaporator performance, sugar quality and yield. The emergence of environmentally friendly and efficient adsorption technology has resulted in widespread interest in carbon-based materials. However, their low adsorption capacity and reusability make them unsuitable for processing sugarcane juice. Here, we provide a cost-effective and sustainable method to dope hydroxyapatite (HAP) nanoparticles on porous carbon (BBC) derived from sugarcane bagasse (BBC-HAP). The composite shows excellent adsorption capacity for color extract from sugarcane juice of 313.33 mg/g, far more effective than the commercially available carbon-based adsorbents. Isotherm studies show that the adsorption of BBC-HAP composite to the colorants is a monolayer process. The pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetic models demonstrate that the adsorption process is dominated by chemisorption and supplemented by physical adsorption.

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Section: Resultsmentioning

confidence: 99%

Effective Adsorption of Colorants from Sugarcane Juice by Bagasse-Based Biochar-Hydroxyapatite Composite

Wang

Luo

Xie

et al. 2022

Foods

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“…These differ based on many combinations of physical factors [81][82][83]. These may interact with the chemical properties and behavior of the studied elements to form complex patterns [84][85][86] that could not be captured with the present data or methods.…”

Section: Basin-scale Factors Hold Enough Information To Predict Poten...mentioning

confidence: 93%

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Lotz

Opp

2022

Applied Sciences

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River sediments often contain potentially harmful pollutants such as metals. Much research has been conducted to identify factors involved in sediment concentrations of metals. While most metal pollution studies focus on smaller scales, it has been shown that basin-scale parameters are powerful predictors of river water quality. The present study focused on basin-scale factors of metal concentrations in river sediments. The study was performed on the contiguous USA using Random Forest (R.F.) to analyze the importance of different factors of the metal pollution potential of river sediments and evaluate the possibility of assessing this potential from basin characteristics. Results indicated that the most important factors belonged to the groups Geology, Dams, and Land cover. Rock characteristics (contents of K2O, CaO, and SiO2) and reservoir drainage area were strong factors. Vegetation indices were more important than land cover types. The response of different metals to basin-scale factors varied greatly. The R.F. models performed well with prediction errors of 16.5% to 28.1%, showing that basin-scale parameters hold sufficient information for predicting potential metal concentrations. The results contribute to research and policymaking dependent on understanding large-scale factors of metal pollution.

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“…Physical adsorption via pore filling onto modified BC (EDTA crosslinked β-cyclodextrin at 300 °C corn stalks) was also tested for the remediation of a Cd/Pb-contaminated soil (Qu et al 2022). The involvement of cation-π electron interaction mechanisms in PTE sorption upon remediation of polluted soils has also been reported (Yi et al 2022;Zhou et al 2022). The electron-rich domains of S/Fe-modified corncob BC were found to have enhanced the active contribution of the cation-π interaction mechanism for Cd 2+ and Pb 2+ stabilization in a contaminated soil, as revealed by Shen et al (2019).…”

Section: Mechanistic Insights Into the Role Of Bc In Pte Immobilizati...mentioning

confidence: 99%

Pros and Cons of Biochar to Soil Potentially Toxic Element Mobilization and Phytoavailability: Environmental Implications

et al. 2022

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While the potential of biochar (BC) to immobilize potentially toxic elements (PTEs) in contaminated soils has been studied and reviewed, no review has focused on the potential use of BC for enhancing the phytoremediation efficacy of PTE-contaminated soils. Consequently, the overarching purpose in this study is to critically review the effects of BC on the mobilization, phytoextraction, phytostabilization, and bioremediation of PTEs in contaminated soils. Potential mechanisms of the interactions between BC and PTEs in soils are also reviewed in detail. We discuss the promises and challenges of various approaches, including potential environmental implications, of BC application to PTE-contaminated soils. The properties of BC (e.g., surface functional groups, mineral content, ionic content, and π-electrons) govern its impact on the (im)mobilization of PTEs, which is complex and highly element-specific. This review demonstrates the contrary effects of BC on PTE mobilization and highlights possible opportunities for using BC as a mobilizing agent for enhancing phytoremediation of PTEs-contaminated soils.

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The sorption and short-term immobilization of lead and cadmium by nano-hydroxyapatite/biochar in aqueous solution and soil

Cited by 55 publications

References 52 publications

Effective Adsorption of Colorants from Sugarcane Juice by Bagasse-Based Biochar-Hydroxyapatite Composite

Effective Adsorption of Colorants from Sugarcane Juice by Bagasse-Based Biochar-Hydroxyapatite Composite

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Pros and Cons of Biochar to Soil Potentially Toxic Element Mobilization and Phytoavailability: Environmental Implications

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