Influence of biochar application on growth of Oryza sativa and its associated soil microbial ecology

Swagathnath, G.; Rangabhashiyam, S.; Murugan, S.; Balasubramanian, Paramasivan

doi:10.1007/s13399-018-0365-z

Cited by 18 publications

(6 citation statements)

References 45 publications

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“…Application of 2 and 5% of RHB to MAPS significantly increased shoot height at the end of the incubation in contrast with the application of OPB, which reduced plant height. Similarly, Swagathnath et al [62] reported wide-ranging trends in shoot height after the application of biochar. High concentrations of heavy metals in soil cause adverse effects on plant growth.…”

Section: Effect Of Biochar Amendments On Plant Germination and Growthmentioning

confidence: 91%

Assessing the Effects of Biochar on the Immobilization of Trace Elements and Plant Development in a Naturally Contaminated Soil

Campos

Rosa

2020

Sustainability

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Soil contamination with trace elements is an important and global environmental concern. This study examined the potential of biochars derived from rice husk (RHB), olive pit (OPB), and a certified biochar produced from wood chips (CWB) to immobilize copper (Cu2+) and lead (Pb2+) in aqueous solution to avoid its leaching and in a pot experiment with acidic Xerofluvent soils multicontaminated with trace elements. After assessing the adsorption potential of Cu2+ and Pb2+ from an aqueous solution of the three studied biochars, the development of Brassica rapa pekinensis plants was monitored on polluted soils amended with the same biochars, to determine their capability to boost plant growth in a soil contaminated with several trace elements. RHB and CWB removed the maximum amounts of Cu2+ and Pb2+ from aqueous solution in the adsorption experiment. The adsorption capacity increased with initial metal concentrations for all biochars. The efficiency in the adsorption of cationic metals by biochars was clearly affected by biochar chemical properties, whereas total specific surface area seemed to not correlate with the adsorption capacity. Among the isotherm models, the Langmuir model was in the best agreement with the experimental data for both cations for CWB and RHB. The maximum adsorption capacity of Cu2+ was 30.77 and 58.82 mg g−1 for RHB and CWB, respectively, and of Pb2+ was 19.34 and 77.52 mg g−1 for RHB and CWB, respectively. The application of 5% of RHB and CWB to the acidic polluted soils improved soil physico-chemical properties, which permitted the development of Brassica rapa pekinensis plants. RHB and CWB have been shown to be effective for the removal of Cu2+ and Pb2+, and the results obtained regarding plant development in the soils contaminated with trace elements indicated that the soil amendments have promising potential for the recovery of land polluted with heavy metals.

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Section: Effect Of Biochar Amendments On Plant Germination and Growthmentioning

confidence: 91%

Assessing the Effects of Biochar on the Immobilization of Trace Elements and Plant Development in a Naturally Contaminated Soil

Campos

Rosa

2020

Sustainability

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“…Therefore CFU of 5% BAS dramatically surpasses BS when discussing unplanted samples only. In previous study conducted by Swagathnath et al. (2019), the bacterial community increased and a loss of fungal one was observed due to biochar addition.…”

Section: Resultsmentioning

confidence: 84%

Expansive soil-biochar-root-water-bacteria interaction: Investigation on crack development, water management and plant growth in green infrastructure

Wang

Zhang

Gan

et al. 2020

International Journal of Damage Mechanics

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The objectives of the study are to explore fundamental mechanism of expansive soil-biochar-root-water-bacteria interaction, and investigate crack development and hydraulic properties of biochar amended soils aiming at green infrastructures. The physical, chemical and biological effects of biochar on expansive soil have been comprehensively explored. Crack development is investigated quantificationally, and mechanism of soil damage evolution is briefly discussed base on micro-chemical analyses. During outdoor vegetation period, photosynthesis light response curves were measured to evaluate plant growth. After period of vegetation, hydraulic properties of root-soil composites and unplanted soils were compared. The study reveals that soil crack intensity factor decreases by 33.5%, 48.5% and 47.3% due to 5%, 10% and 15% biochar introduction respectively after 5 wetting-drying cycles. 15% biochar amendment helps to restrain both initiation and propagation of soil cracks. Biochar amendment of up to 5% contributes well to residual water content and plant growth (i.e., light saturation point and light compensation point). Excessive biochar addition would restrain roots elongation, and increase saturated water content. Spatial root distribution is changed due to biochar addition, which further influences hydraulic properties and crack development. Hydraulic conductivity and soil dry density share negative correlations, 5% biochar enhances hydraulic conductivity remarkably at relatively loose condition. Biochar amendment also contributes to preventing nitrogen loss and forming more complex bacterial community in soils. The study adds to our knowledge of physio-chemical interactions of biochar with expansive clay, vegetation, water and microorganism.

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“…Different synthesis methods of HTC were considered [32][33][34]. e preparation of biomass porous carbon usually requires a high temperature calcination process [21][22][23], while our hydrothermal carbon (HTC) is prepared by a one-step hydrothermal method, which is much simpler.…”

Section: Synthesis Of Htcmentioning

confidence: 99%

“…Anandkumar and Mandal used AC prepared from bael fruit at 600°C to eliminate Cr (VI) with a considerable value of 17.27 mg/g in adsorption capacity that had been acquired [ 30 ]. Also, several activated carbon adsorbents from agricultural and biological wastes including almond shells, straw, waste tea, coconut shells, cactus leaves [ 31 , 32 ], and algae had been introduced in chromium (VI) elimination from water solutions. However, the production process of biochar is relatively complex.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Mesoporous Biochar from Cornstalk for the Chromium (VI) Elimination by Using One-Step Hydrothermal Carbonation

Wang

Xie

Zheng

et al. 2021

Journal of Analytical Methods in Chemistry

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Hydrothermal carbon (HTC) was prepared by the one-step hydrothermal method for Cr (VI) removal from wastewater, which was considered a “green chemistry” method. The specific surface area (SBET) of HTC was 85 m2/g with the pore size in range of 2.0–24.0 nm. FT-IR spectra analysis showed that the HTC had abundant chemical surface functional groups. The influence of adsorption parameters such as pH, HTC dosage, Cr (VI) concentration, and contact time on the removal efficiency of Cr (VI) had been investigated. When the initial concentration was 50 mg/L, pH = 6, amount of adsorbent was 0.2 g/50 ml, and adsorption time was 90 min; the Cr (VI) absorbed rate of HTC reached 98%. Batch adsorption experiments indicated that Cr (VI) adsorption data of HTC fitted the Freundlich isothermal and pseudo-second-order kinetic models. Overall, our findings provide a promising material in treatment of Cr (VI)-rich wastewater and give a clear picture of its application, which is worthy of further study.

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Influence of biochar application on growth of Oryza sativa and its associated soil microbial ecology

Cited by 18 publications

References 45 publications

Assessing the Effects of Biochar on the Immobilization of Trace Elements and Plant Development in a Naturally Contaminated Soil

Assessing the Effects of Biochar on the Immobilization of Trace Elements and Plant Development in a Naturally Contaminated Soil

Expansive soil-biochar-root-water-bacteria interaction: Investigation on crack development, water management and plant growth in green infrastructure

Preparation of Mesoporous Biochar from Cornstalk for the Chromium (VI) Elimination by Using One-Step Hydrothermal Carbonation

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