Rice busk biochar treatment to cobalt-polluted fluvo-aquic soil: speciation and enzyme activities

Liu, Borui; Huang, Qing; Su, Yuefeng; Sun, Liuye; Wu, Tonghao; Wang, Guange; Kelly, Ryan M.

doi:10.1007/s10646-019-02134-x

Cited by 10 publications

(4 citation statements)

References 75 publications

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“…Mohamed et al indicated that the soil CEC is positively correlated with the residual fraction of heavy metals [70]. Liu et al found a negative correlation between soil enzyme activity and the bioavailable content of heavy metals [71]. In this study, biochar amendments resulted in increased CEC and enhanced dehydrogenase, catalase, invertase, and urease activities in the soil.…”

Section: Bioavailability Of Heavy Metals In Biochar-amended Soilsupporting

confidence: 50%

Stabilization of Soil Co-Contaminated with Mercury and Arsenic by Different Types of Biochar

Yang

et al. 2022

Sustainability

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Mercury (Hg) and arsenic (As) are toxic and harmful heavy metals, with exceedance rates of 1.6% and 2.7%, respectively, in soils across China. Compared to soils contaminated with Hg or As alone, co-contaminated soils pose complex environmental risks and are difficult to remediate. Biochar is widely used as a soil amendment to adsorb and immobilize pollutants such as heavy metals. However, only a few studies have explored the efficiency of biochars produced from different crop straws to reduce the bioavailability of heavy metals in co-contaminated soils, and the effects on soil biological properties are often overlooked. The aim of this study was to investigate changes to the physicochemical properties, enzyme activities, and heavy metal bioavailability of an industrial soil co-contaminated with Hg and As upon the addition of different biochars from reed, cassava, and rice straws (REB, CAB, and RIB, respectively). The soil was amended with 1% biochar and planted with spinach in pots for 30 days. RIB was more effective than REB and CAB in increasing the soil pH, organic matter content, and cation exchange capacity. RIB and CAB exhibited similar positive effects on the soil dehydrogenase, catalase, invertase, and urease activities, which were higher than those of REB. The exchangeable fraction of both metals decreased upon biochar addition, and the residual fraction showed the opposite trend. All biochar amendments reduced the bioconcentration factors of heavy metals (especially Hg) in plants and decreased the metal bioavailability in soil. RIB is the optimal amendment for the stabilization of soil co-contaminated with Hg and As.

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Section: Bioavailability Of Heavy Metals In Biochar-amended Soilsupporting

confidence: 50%

Stabilization of Soil Co-Contaminated with Mercury and Arsenic by Different Types of Biochar

Yang

et al. 2022

Sustainability

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“…Elevated concentrations of cobalt in soil and groundwater occur locally depending on the local geology or atmospheric deposition from metal ore mining and smelting sites, making the problem insignificant. However, cobalt can be easily transferred by air deposition into soil or leached to groundwater, affecting crop quality and food safety [3]. Cobalt plays a significant role as a constituent of vitamin B12, however, excessive exposure has been shown to induce various adverse health effects [4].…”

Section: Introductionmentioning

confidence: 99%

Wheat Straw Biochar as a Specific Sorbent of Cobalt in Soil

et al. 2020

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There is an urgent need to search for new sorbents of pollutants presently delivered to the environment. Recently biochar has received much attention as a low-cost, highly effective heavy metal adsorbent. Biochar has been identified as an efficient material for cobalt (Co) immobilization from waters; however, little is known about the role of Co immobilization in soil. Hence, in this study, a batch experiment and a long-term incubation experiment with biochar application to multi-contaminated soil with distinct properties (sand, loam) were conducted to provide a brief explanation of the potential mechanisms of Co (II) sorption on wheat straw biochar and to describe additional processes that modify material efficiency for metal sorption in soil. The soil treatments with 5% (v/w) wheat straw biochar proved to be efficient in reducing Co mobility and bioavailability. The mechanism of these processes could be related to direct and indirect effects of biochar incorporation into soil. The FT-IR analysis confirmed that hydroxyl and carboxyl groups present on the biochar surface played a dominant role in Co (II) surface complexation. The combined effect of pH, metal complexation capacity, and the presence of Fe and Mn oxides added to wheat straw biochar resulted in an effective reduction of soluble Co (II), showing high efficiency of this material for cobalt sorption in contaminated soils.

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“…In contrast to other carbonaceous sorbents, biochar is a less expensive and more promising adsorbent for the removal of metals from water. Recently, a lot of study has been done to investigate the effectiveness of biochar for heavy metal removal, including the removal of Co from an aqueous solution (Sun et al, 2019). The majority of this research has offered sorption methods for metals collectively; yet, in order to characterize biochar's capability for heavy metal sorption, a comparison of mechanisms for the removal of various metals is required.…”

Section: Introductionmentioning

confidence: 99%

“…The problem is negligible since elevated concentrations of cobalt in soil and groundwater are confined to certain areas and are caused by air deposition from metal ore mining and smelting sites or local geology. However, cobalt is easily deposited into soil via air or leached into groundwater, which can have an impact on food safety and crop quality (Liu B et al, 2019). Although cobalt is an important component of vitamin B12, excessive exposure to it has been linked to a number of negative health effects (Leyssens et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Equilibrium Sorption Studies of Cobalt (Ii) Ions Uptake From Aqueous Solution Using Modified Biochar

Lemeh,

Ekabafe,

Linda

2024

Preprint

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The assessment of the equilibrium sorption for the uptake of Cobalt (ii) ions from aqueous solution using the modified biochars was studied. The modified biochars were prepared from agricultural waste materials: palm shells ( Elaeis guineesis jeaq.) and sugarcane peels ( Saccharum officinarum). The unmodified and oxidativly modified biochars were characterized for their functional groups, morphology, elemental analysis and surface area using Fourier Transform Infrared Spectrophotometer (FTIR), Scanning Electron Microscope (SEM), Energy dispersive x-ray spectroscope (EDX) and Brunauer-Emmett-Teller (BET) respectively. The batch equilibrium sorption procedure was assessed for the uptake of cobalt ions from aqueous solution. The findings demonstrated that the specific surface area of the Potassium permanganate and Nitric acid modified palm shells and sugarcane peels biochars exhibited high surface area of MBET 450.023m 2/g, and SBET 256.0m 2/g for AP1 and MBET of 392.508m 2/g, SBET of 241.9m 2/g for BS2 respectively, greater than the unmodified biochar with 356.76m 2/g for MBET, 244.2m 2/g for SBET and 418.333m 2/g for MBET and 227.2m 2/g for SBET. The equilibrium sorption data conform to the Freundlich model with coefficient of correlation (R 2) value of 0.9976 and 0.9426 for the modified palm shell (AP1) and sugarcane peel (BS2) respectively. The AP1 has the highest adsorption and good reusability for Co 2+, and has good practical application prospects.

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Rice busk biochar treatment to cobalt-polluted fluvo-aquic soil: speciation and enzyme activities

Cited by 10 publications

References 75 publications

Stabilization of Soil Co-Contaminated with Mercury and Arsenic by Different Types of Biochar

Stabilization of Soil Co-Contaminated with Mercury and Arsenic by Different Types of Biochar

Wheat Straw Biochar as a Specific Sorbent of Cobalt in Soil

Equilibrium Sorption Studies of Cobalt (Ii) Ions Uptake From Aqueous Solution Using Modified Biochar

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