Biochar aided aromatic grass [Cymbopogon martini (Roxb.) Wats.] vegetation: A sustainable method for stabilization of highly acidic mine waste

Jain, Shilpi; Khare, Puja; Mishra, Disha; Shanker, Karuna; Singh, Pooja; Singh, R. P.; Das, Paurabi; Yadav, Renu; Saikia, Binoy K.; Baruah, Bimala P.

doi:10.1016/j.jhazmat.2019.121799

Cited by 57 publications

(14 citation statements)

References 38 publications

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“…Mohan et al, 48 demonstrated that rice husk and corn stover biochar can be used for carbon sequestration and soil amendments. Amelioration of different types of soils (metal‐contaminated, sandy loam, and soils affected with mine wastes) by biochar prepared from distilled waste was demonstrated in various studies 14‐16,21‐23,33,49 . These studies indicate that biochar improved the soil chemical and biological quality, reduced nutrient leaching, improved nutrient use efficiency of the plant, enhanced plant growth, and restrict the uptake of contaminants.…”

Section: How Can Biochar Be a Sustainable Answer?mentioning

confidence: 93%

“…The application of biochar has also been demonstrated to improve nutrient cycling in the short term 11 with the enhancement of biomass production 12‐16 . Moreover, biochar application in restoration of desertified 17 and secondary salinized land 18‐20 and acidic mine soil 21‐23 encountered the challenges of problematic soils. Consequently, the conversion of crop residue into biochar instead of their burning is very simple and easily adaptable by the rural people of India.…”

Section: What Could Be the Solution?mentioning

confidence: 99%

“…Contrarily, biochar contributed a 2–4% reduction in CO 2 emission and complete suppression of methane emissions depending upon the application rate and crop type 44 . Biochar also has liming properties that curtailed the cost of chemicals used for neutralizing the acidic soils 21,23 . In stressed soil, biochar improvement in soil fertility and crop productivity biochar 15,16,23 further curtailed the remediation cost of these lands and generate extra revenue from barren lands.…”

Section: How Can Biochar Be a Sustainable Answer?mentioning

confidence: 99%

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Biochar production: A sustainable solution for crop residue burning and related environmental issues

Khare

Deshmukh

Yadav

et al. 2020

Env Prog and Sustain Energy

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The crop residue burning poses a threat to the environment and human health due to the emission of toxic gasses and particulate matter. This study examines the possibility of biochar production from corp residue and its utilization as a soil fertility enhancer and alternative fuel as a sustainable solution. The estimations of the total biochar production from major crop residues produced (wheat, rice, sugarcane, and maize) in India and the evaluation of its impact on CO2 sequestration potential, nutrient sequestration, and improvement in crop yield were made with the available data. The estimations indicate that the biochars produced from crop residue could have high carbon (45–83%), nutrients (N: 0.3–3.2 g/kg%, P: 0.1–7.99 g/kg and K: 2.64–224 g/kg), cation exchange capacity (10.9–97.3cmol/kg), water holding capacity (41–561%) with high heat value (15–28 MJ/kg). On applying crop residue derived biochar in soil, the revenue can be generated through CO2 sequestration ($0.29–3.63 million per year) and enhancement in crop productivity (0.02–0.94 million $/ha/year). The study advises that the production of biochar from crop residue could be beneficial not only for the environment but also for the farmers. Technological developments for biochar production at farmer levels are needed to discontinue the crop residue burning in India.

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Section: How Can Biochar Be a Sustainable Answer?mentioning

confidence: 93%

Section: What Could Be the Solution?mentioning

confidence: 99%

Section: How Can Biochar Be a Sustainable Answer?mentioning

confidence: 99%

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Biochar production: A sustainable solution for crop residue burning and related environmental issues

Khare

Deshmukh

Yadav

et al. 2020

Env Prog and Sustain Energy

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“…In addition, due to their different physiology and the large diversity in the chemical class and biosynthesis pathways of pharmacologically active compounds, different MPs could have a differential response for biochar amendments under metal stress. The alteration of pharmacologically active compounds in different MPs under metal stress has been previously reported (Abbas, Rizwan, et al, 2017; Das et al, 2020); however, little information is available on the safe production of medicinal herbs and the concentration of their pharmacologically active compounds in biochar‐amended metal contaminated soil (Jain et al, 2017, 2020; Nigam et al, 2019). There are many reports on the ameliorative effect of biochar on the plants grown under metal treatments (Lee et al, 2019; Simiele et al, 2021; Wei et al, 2021), but no study reported the impact of biochar on the production of pharmacologically active compounds and health hazards associated with Pb and Cd in MPs.…”

Section: Introductionmentioning

confidence: 97%

“…Biochar produced by thermochemical conversion of plant biomass or other waste in an oxygen‐limited environment (Lee et al, 2019) is a nutrient‐rich carbonaceous solid with a porous structure. Biochar has been reported to improve soil characteristics such as pH, water holding capacity (WHC), cation exchange capacity (CEC), nutrient availability, and microbial activities (Borgohain et al, 2020; Jain et al, 2020). The high surface area and pH, along with the presence of functional groups (−COOH and −OH) at the biochar surface, are the major properties responsible for the immobilization of heavy metals (Penido et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Biochar amendment reduced the risk associated with metal uptake and improved metabolite content in medicinal herbs

Nigam

Khare

Ahsan

et al. 2021

Physiologia Plantarum

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Contaminations of heavy metals such as lead (Pb) and cadmium (Cd) in medicinal plants (MPs) not only restrict their safe consumption due to health hazards but also lower their productivity. Biochar amendments in the soil are supposed to immobilize the toxic metals, improve the soil quality, and agricultural productivity. However, the impact of biochar on growth attributes, metal accumulation, pharmacologically active compounds of MPs, and health risk is less explored. An experiment was performed on three medicinal plants [Bacopa monnieri (L.), Andrographis paniculata (Burmf.) Nees, and Withania somnifera (L.)] grown in a greenhouse in soil co‐contaminated with Pb and Cd (at two concentrations) without and with biochar amendments (2% and 4% application rates). The fractionation of Pb and Cd, plant growth parameters, stress enzymes, photosynthetic capacity, pharmacologically active compounds, nutrient content, uptake and translocation of metals, antioxidant activities, and metabolite content were examined in the three MPs. The accumulation of Pb and Cd varied from 3.25–228 and 1.29–20.2 mg kg−1, respectively, in the three MPs, while it was reduced to 0.08–18 and 0.03–6.05 mg kg−1upon biochar treatments. Plants grown in Pb and Cd co‐contaminated soil had reduced plant biomass (5%–50% depending on the species) compared to control and a deleterious effect on photosynthetic attributes and protein content. However, biochar amendments significantly improved plant biomass (21%–175%), as well as photosynthesis attributes, chlorophyll, and protein contents. Biochar amendments in Pb and Cd co‐contaminated soil significantly reduced the health hazard quotient (HQ) estimated for the consumption of these medicinal herbs grown on metal‐rich soil. An enhancement in secondary metabolite content and antioxidant properties was also observed upon biochar treatments. These multiple beneficial effects of biochar supplementation in Pb and Cd co‐contaminated soil suggested that a biochar amendment is a sustainable approach for the safe cultivation of MPs.

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Use of Biochar as an Amendment for Remediation of Heavy Metal‐Contaminated Soils

Maiti

Ghosh

2021

Handbook of Assisted and Amendment: Enhanced Sustainable Remediation Technology

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Biochar aided aromatic grass [Cymbopogon martini (Roxb.) Wats.] vegetation: A sustainable method for stabilization of highly acidic mine waste

Cited by 57 publications

References 38 publications

Biochar production: A sustainable solution for crop residue burning and related environmental issues

Biochar production: A sustainable solution for crop residue burning and related environmental issues

Biochar amendment reduced the risk associated with metal uptake and improved metabolite content in medicinal herbs

Use of Biochar as an Amendment for Remediation of Heavy Metal‐Contaminated Soils

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