A comprehensive evaluation of inherent properties and applications of nano-biochar prepared from different methods and feedstocks

Anupama, .; Khare, Puja

doi:10.1016/j.jclepro.2021.128759

Cited by 41 publications

(48 citation statements)

References 126 publications

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“…We synthesized a nanobiochar (nanoB) to acquire unique characteristics such as small size, high surface area, charged surface, uniform pore distribution, and distinct morphology [ 31 ]. These properties are important in describing the extent and impact of nanoB in various applications [ 18 , 27 ].…”

Section: Discussionmentioning

confidence: 99%

“…The FTIR analysis in our synthesized nanoB also confirmed the presence of oxygen, carboxyl, sulfonyl, and nitrile, etc., containing groups. These groups are important in removing a number of pollutants, through co-precipitation or complexation processes, from the soil or an aqueous medium [ 31 ], and adsorbing extra nutrients that are available in the soil after fertilization or organic matter decomposition [ 25 , 32 , 33 ]. For example, oxygen-containing groups on nanoB’s surface ( Figure 1 B) have been shown to provide suitable sites for NH 4 + and NH 3 adsorption [ 34 ], thereby increasing their availability in the soil for crop growth improvement [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

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Nanobiochar and Copper Oxide Nanoparticles Mixture Synergistically Increases Soil Nutrient Availability and Improves Wheat Production

Rashid

Shah

Sadiq

et al. 2023

Plants

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Recently, nanomaterials have received considerable attention in the agricultural sector, due to their distinctive characteristics such as small size, high surface area to volume ratio, and charged surface. These properties allow nanomaterials to be utilized as nanofertilizers, that can improve crop nutrient management and reduce environmental nutrient losses. However, after soil application, metallic nanoparticles have been shown to be toxic to soil biota and their associated ecosystem services. The organic nature of nanobiochar (nanoB) may help to overcome this toxicity while maintaining all the beneficial effects of nanomaterials. We aimed to synthesize nanoB from goat manure and utilize it with CuO nanoparticles (nanoCu) to influence soil microbes, nutrient content, and wheat productivity. An X-ray diffractogram (XRD) confirmed nanoB synthesis (crystal size = 20 nm). The XRD spectrum showed a distinct carbon peak at 2θ = 42.9°. Fourier-transform spectroscopy of nanoB’s surface indicated the presence of C=O, C≡N–R, and C=C bonds, and other functional groups. The electron microscopic micrographs of nanoB showed cubical, pentagonal, needle, and spherical shapes. NanoB and nanoCu were applied alone and as a mixture at the rate of 1000 mg kg−1 soil, to pots where wheat crop was grown. NanoCu did not influence any soil or plant parameters except soil Cu content and plant Cu uptake. The soil and wheat Cu content in the nanoCu treatment were 146 and 91% higher, respectively, than in the control. NanoB increased microbial biomass N, mineral N, and plant available P by 57, 28, and 64%, respectively, compared to the control. The mixture of nanoB and nanoCu further increased these parameters, by 61, 18, and 38%, compared to nanoB or nanoCu alone. Consequently, wheat biological, grain yields, and N uptake were 35, 62 and 80% higher in the nanoB+nanoCu treatment compared to the control. NanoB further increased wheat Cu uptake by 37% in the nanoB+nanoCu treatment compared to the nanoCu alone. Hence, nanoB alone, or in a mixture with nanoCu, enhanced soil microbial activity, nutrient content, and wheat production. NanoB also increased wheat Cu uptake when mixed with nanoCu, a micronutrient essential for seed and chlorophyll production. Therefore, a mixture of nanobiochar and nanoCu would be recommended to farmers for improving their clayey loam soil quality and increasing Cu uptake and crop productivity in such agroecosystems.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Nanobiochar and Copper Oxide Nanoparticles Mixture Synergistically Increases Soil Nutrient Availability and Improves Wheat Production

Rashid

Shah

Sadiq

et al. 2023

Plants

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“…Several studies used ball milling for the preparation of nanobiochar with enhanced functional characteristics. ,,,− Increase in specific surface area, particle size reduction, enhancement in oxygen-containing surface functional groups, adsorption, and catalytic efficiency proliferations are improved through ball milling as compared to their pristine biochar precursors. The progress in this new area of research is still in development and rising rapidly, along with challenges and opportunities. , The diagrammatic representation of ball milling procedure and functioning is shown in Figure A and B.…”

Section: Nanobiochar Preparationmentioning

confidence: 99%

“…Various chemical and morphological modifications can overcome some biochar limitations by enhancing porosity, specific surface area, introducing specific surface functionalities, and removing others, as well as improving selectivity, separability, and structural stability. − One such approach is developing nanobiochars (particle sizes with at least one dimension <100 nm), which can provide enhanced properties and applicability. ,− Nanobiochar can be synthesized using ball-milling, sonication, centrifugation, and other techniques. ,,− Nanobiochar can also be modified to develop what we call engineered nanobiochars in this review. ,, Nanobiochar possesses higher specific surface area to mass ratios versus macro or pristine biochar. This property can assist in several applications, including use as an adsorbent, capacitor, reinforcing filler sensor, slow-release fertilizer, photocatalytic material, and fuel additive. ,− ,, …”

Section: Introductionmentioning

confidence: 99%

Definitive Review of Nanobiochar

Chaubey,

Pratap,

Preetiva

et al. 2024

ACS Omega

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Nanobiochar is an advanced nanosized biochar with enhanced properties and wide applicability for a variety of modern-day applications. Nanobiochar can be developed easily from bulk biochar through top-down approaches including ball-milling, centrifugation, sonication, and hydrothermal synthesis. Nanobiochar can also be modified or engineered to obtain "engineered nanobiochar" or biochar nanocomposites with enhanced properties and applications. Nanobiochar provides many fold enhancements in surface area (0.4−97-times), pore size (0.1−5.3-times), total pore volume (0.5−48.5-times), and surface functionalities over bulk biochars. These enhancements have given increased contaminant sorption in both aqueous and soil media. Further, nanobiochar has also shown catalytic properties and applications in sensors, additive/fillers, targeted drug delivery, enzyme immobilization, polymer production, etc. The advantages and disadvantages of nanobiochar over bulk biochar are summarized herein, in detail. The processes and mechanisms involved in nanobiochar synthesis and contaminants sorption over nanobiochar are summarized. Finally, future directions and recommendations are suggested.

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“…The grinding of biochar in a solid state process to nanometric size in a ball mill is considered a green modification method for biochar engineering. Ball milling enhances biochar's adsorption efficiency [ 57 ] due to an increase in SSA, opening of pore structures, and alteration of surface functional groups, all of which promote π–π and electrostatic interactions [ 130 ]. For example, biochar derived from wood chips was ball milled, which resulted in an SSA of 841 m 2 g −1 .…”

Section: Biochar From Various Feedstocks For Removal Of Pcsmentioning

confidence: 99%

Biochar-mediated removal of pharmaceutical compounds from aqueous matrices via adsorption

Chauhan

Shafi

Dubey

et al. 2022

Waste Dispos. Sustain. Energy

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Pharmaceutical is one of the noteworthy classes of emerging contaminants. These biologically active compounds pose a range of deleterious impacts on human health and the environment. This is attributed to their refractory behavior, poor biodegradability, and pseudopersistent nature. Their large-scale production by pharmaceutical industries and subsequent widespread utilization in hospitals, community health centers, and veterinary facilities, among others, have significantly increased the occurrence of pharmaceutical residues in various environmental compartments. Several technologies are currently being evaluated to eliminate pharmaceutical compounds (PCs) from aqueous environments. Among them, adsorption appears as the most viable treatment option because of its operational simplicity and low cost. Intensive research and development efforts are, therefore, currently underway to develop inexpensive adsorbents for the effective abatement of PCs. Although numerous adsorbents have been investigated for the removal of PCs in recent years, biochar-based adsorbents have garnered tremendous scientific attention to eliminate PCs from aqueous matrices because of their decent specific surface area, tunable surface chemistry, scalable production, and environmentally benign nature. This review, therefore, attempts to provide an overview of the latest progress in the application of biochar for the removal of PCs from wastewater. Additionally, the fundamental knowledge gaps in the domain knowledge are identified and novel strategic research guidelines are laid out to make further advances in this promising approach towards sustainable development.

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A comprehensive evaluation of inherent properties and applications of nano-biochar prepared from different methods and feedstocks

Cited by 41 publications

References 126 publications

Nanobiochar and Copper Oxide Nanoparticles Mixture Synergistically Increases Soil Nutrient Availability and Improves Wheat Production

Nanobiochar and Copper Oxide Nanoparticles Mixture Synergistically Increases Soil Nutrient Availability and Improves Wheat Production

Definitive Review of Nanobiochar

Biochar-mediated removal of pharmaceutical compounds from aqueous matrices via adsorption

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