Lead immobilization in simulated polluted soil by Douglas fir biochar-supported phosphate

Arwenyo, Beatrice; Varco, Jac J.; Dygert, Andrew; Atsar, F. S.; Solomon, S G; Thirumalai, R.; Pittman, Charles U.; Mlsna, Todd

doi:10.1016/j.chemosphere.2021.133355

Cited by 17 publications

(7 citation statements)

References 40 publications

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“…For the passivation remediation of heavy metal-contaminated soils, the application of inorganic-organic compound materials may be another efficient strategy to improve the passivation effects of heavy metals [6,32,51]. In acidic soils, biochar-based or lime-based compound amendments were considerably more efficient in immobilizing heavy metals than the application of single materials [6,32,51].…”

Section: Discussionmentioning

confidence: 99%

“…Seventy percent of the field water capacity was generally termed as drought-free stress [30,31]. The addition ratio of single amendments was set at 2%, 4%, and 8% (w/w) [27,28,[32][33][34]. The inorganic-organic compound amendments were prepared by mixing the inorganic materials with organic materials in a 1:1 ratio, and the application rate of compound amendments was set at 2% + 2%, 4% + 4%, and 8% + 8% (w/w) [27,[32][33][34].…”

Section: Experimental Designmentioning

confidence: 99%

“…The addition ratio of single amendments was set at 2%, 4%, and 8% (w/w) [27,28,[32][33][34]. The inorganic-organic compound amendments were prepared by mixing the inorganic materials with organic materials in a 1:1 ratio, and the application rate of compound amendments was set at 2% + 2%, 4% + 4%, and 8% + 8% (w/w) [27,[32][33][34]. A control treatment (without the addition of any amendment) was simultaneously included.…”

Section: Experimental Designmentioning

confidence: 99%

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Interactive Effects of Inorganic–Organic Compounds on Passivation of Cadmium in Weakly Alkaline Soil

Tong,

Huang,

Liu

et al. 2023

Agronomy

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The availability of cadmium (Cd) in soils is an important factor affecting the safe production of crops. The application of certain soil amendments could reduce the soil Cd availability via the passivation of Cd. However, the passivation of Cd in alkaline soils is limited. Thus, different inorganic and organic amendments and their compound treatments were selected as passivators for reducing the Cd availability in a weakly alkaline farmland soil. The effects of different single and compound amendments on the soil pH and Cd availability, as well as the interactions between inorganic and organic components in immobilizing Cd, were evaluated. The results showed that the inorganic–organic compound amendments can considerably improve the Cd passivation efficiency in the weakly alkaline soil. Moreover, the inorganic and organic components in the compound amendments exerted different synergistic effects in Cd passivation. The manganese dioxide-based compound amendments showed the most remarkable synergistic effects, while the calcium–magnesium–phosphate fertilizer-based compound amendments displayed the weakest synergistic effects. The underlying mechanisms regarding the synergistic effects may be that the compound amendments enhanced the adsorption/specific adsorption, co-precipitation, and surface complexation of Cd in the alkaline soil. A more balanced recommendation for Cd immobilization in the weakly alkaline soil may be manganese dioxide-based compound amendments, given the synergistic effects and Cd immobilization capabilities of various compound materials. This study may provide a theoretical foundation for the passivation remediation of alkaline Cd-contaminated farmland soils by using inorganic–organic compound amendments.

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Section: Discussionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

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Interactive Effects of Inorganic–Organic Compounds on Passivation of Cadmium in Weakly Alkaline Soil

Tong,

Huang,

Liu

et al. 2023

Agronomy

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“…The Indian government's Ministry of Mines report states that the country possesses abundant resources for a wide variety of metallic and non-metallic mineral kinds. Madhya Pradesh accounted for 263 of the 1319 reported mines, with Gujarat (147), Karnataka (132), Odisha (128), Chhattisgarh (114), Telangana (39), Rajasthan (90), Tamil Nadu (88), Jharkhand (45) Maharashtra (73) and Andhra Pradesh (108) following, in order of decreasing number. In the years 2021-2022, these 11 States collectively represented 93% of all mines in the nation.…”

Section: Status Of Heavy Metals Pollution In Indiamentioning

confidence: 99%

“…Additional crucial parameters to consider are the soil pH, organic matter, and phosphorus level. By adding lime to the soil, the pH may be raised to 6.5-7.0, which will reduce the amount of Pb that plants absorb [108]. Moreover, as will be explained below, a variety of variables affect a plant's capacity to absorb HMs.…”

Section: Factors Impacting Heavy Metals Phytoremediationmentioning

confidence: 99%

Current Status of Biotechnological Approaches to Enhance the Phytoremediation of Heavy Metals in India—A Review

Barathi,

Lee,

Venkatesan

et al. 2023

Plants

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Rising waste construction, agricultural actions, and manufacturing sewages all contribute to heavy metal accumulation in water resources. Humans consume heavy metals-contaminated substances to make sustenance, which equally ends up in the food circle. Cleaning of these vital properties, along with the prevention of new pollution, has long been required to evade negative strength consequences. Most wastewater treatment techniques are widely acknowledged to be costly and out of the grasp of governments and small pollution mitigation businesses. Utilizing hyper-accumulator plants that are extremely resilient to heavy metals in the environment/soil, phytoremediation is a practical and promising method for eliminating heavy metals from contaminated environments. This method extracts, degrades, or detoxifies harmful metals using green plants. The three phytoremediation techniques of phytostabilization, phytoextraction, and phytovolatilization have been used extensively for soil remediation. Regarding their ability to be used on a wide scale, conventional phytoremediation methods have significant limitations. Hence, biotechnological attempts to change plants for heavy metal phytoremediation methods are extensively investigated in order to increase plant effectiveness and possible use of improved phytoremediation approaches in the country of India. This review focuses on the advances and significance of phytoremediation accompanied by the removal of various harmful heavy metal contaminants. Similarly, sources, heavy metals status in India, impacts on nature and human health, and variables influencing the phytoremediation of heavy metals have all been covered.

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Biochar Applications for Sustainable Agriculture and Environmental Management

Prasad

2023

Agroecological Approaches for Sustainable Soil Management

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Lead immobilization in simulated polluted soil by Douglas fir biochar-supported phosphate

Cited by 17 publications

References 40 publications

Interactive Effects of Inorganic–Organic Compounds on Passivation of Cadmium in Weakly Alkaline Soil

Interactive Effects of Inorganic–Organic Compounds on Passivation of Cadmium in Weakly Alkaline Soil

Current Status of Biotechnological Approaches to Enhance the Phytoremediation of Heavy Metals in India—A Review

Biochar Applications for Sustainable Agriculture and Environmental Management

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