Characterization of nanoparticles of biochars from different biomass

Oleszczuk, Patryk; Ćwikła-Bundyra, Wiesława; Bogusz, Aleksandra; Skwarek, Ewa; Ok, Yong Sik

doi:10.1016/j.jaap.2016.07.017

Cited by 107 publications

(74 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The understanding that biochar is a heterogeneous aggregation of particles with different sizes that have gradually replaced the previous recognition (Zhang et al 2019). Beside bulk biochar, small-sized biochar (dissolved and nanometer-scale biochar) has also been found to be an important component of biochar (Kang et al 2015;Lian and Xing 2017;Oleszczuk et al 2016;Saxena et al 2014;Sigmund et al 2017;Spokas et al 2014;Wang et al 2012Wang et al , 2013Yue et al 2019;Zhang et al 2019).…”

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

“…In general, there is a structural difference between bulk biochar and small-sized biochar (dissolved and nano biochar) is not only in the particle size, but also in other physicochemical properties. From the results of structural characterization, bulk biochar and small-sized biochar also have differences in the elemental composition, aromaticity/ polarity, pH, cation exchange capacity (CEC), surface area (SA), pore volume and zeta potential (Oleszczuk et al 2016;Zhang et al 2019). Small-sized biochar has a higher surface area (SA) and zeta potential (Oleszczuk et al 2016); while, the pore volume was lower than bulk biochar.…”

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

“…From the results of structural characterization, bulk biochar and small-sized biochar also have differences in the elemental composition, aromaticity/ polarity, pH, cation exchange capacity (CEC), surface area (SA), pore volume and zeta potential (Oleszczuk et al 2016;Zhang et al 2019). Small-sized biochar has a higher surface area (SA) and zeta potential (Oleszczuk et al 2016); while, the pore volume was lower than bulk biochar. However, no clear tendencies were noted for the elemental composition, aromaticity/polarity, pH, and cation exchange of small-sized biochar and bulk biochar, which related to feedstock and pyrolytic temperature (Oleszczuk et al 2016;Zhang et al 2019).…”

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

“…Small-sized biochar has a higher surface area (SA) and zeta potential (Oleszczuk et al 2016); while, the pore volume was lower than bulk biochar. However, no clear tendencies were noted for the elemental composition, aromaticity/polarity, pH, and cation exchange of small-sized biochar and bulk biochar, which related to feedstock and pyrolytic temperature (Oleszczuk et al 2016;Zhang et al 2019). Interestingly, small-sized biochar demonstrated large quantities of C-O-H chemical bond which indicated the existence of phenolic component (Zhang et al 2019).…”

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

See 3 more Smart Citations

Application of biochar-based materials in environmental remediation: from multi-level structures to specific devices

Wang

et al. 2020

Biochar

125

View full text Add to dashboard Cite

The development of biochar has triggered a hot-spot in various research fields including agriculture, energy, environment, and materials. Biochar-based materials provide a novel approach against environmental challenging issues. Considering the rapid development of biochar materials, this review serves as a valuable platform to summarize the recent progress on the theoretical investigation and engineering applications of biochar materials in environmental remediation. For a better understanding of the structure-application relationships, the structural properties of biochar from macroscopic and microscopic aspects are summarized. The multilevel structures including elements, phases, surface chemistry, and molecular are highlighted to elucidate the multi-functional properties of biochars. Sorption, catalysis, redox reaction, and biological activity of biochar are briefly illustrated, which influence the transport, transformation, and removal of organic and inorganic pollutants in the environments. According to the multi-level structures and structure-application relationships of biochar, specific biocharbased materials and devices have been designed for practical environmental application. The important progress on the functionalization and device of biochar-based materials, including magnetic biochars, 2D and 3D biochar-based macrostructures, immobilized microorganism on biochar, and biochar-amended biofilters are highlighted. The environmental friendliness and sustainability of biochar-based materials, considering the whole cycle from synthesis to application, are evaluated.

show abstract

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

Section: Macroscopic: Bulk Biochar Dissolved and Nano-biocharmentioning

confidence: 99%

See 2 more Smart Citations

Application of biochar-based materials in environmental remediation: from multi-level structures to specific devices

Wang

et al. 2020

Biochar

125

View full text Add to dashboard Cite

show abstract

“…Recently, spherical carbon-rich colloids with a relatively high surface charge, so-called biochar colloids, have been extracted as a side product from pyrolyzed biomass via sonication (Wang et al 2013a, b;Oleszczuk et al 2016), acid/ base (Li et al 2017b), grinding (Li et al 2017a), and ball milling (Naghdi et al 2017;Lyu et al 2018;Wang et al 2018;Cao et al 2019). It has been suggested that biochar colloids originate from the physical disintegration of amorphous regions of bulk biochar with higher polar content and less aromatic structure (Qu et al 2016;Liu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Biochar colloids and their use in contaminants removal

Safari

Gunten

Alam

et al. 2019

Biochar

View full text Add to dashboard Cite

In this study, we report on the extraction, characterization, and potential applications of colloidal biochar derived from pyrolyzed wood-an untapped source of carbonaceous particles. A series of characterizations was performed on biochar colloids to unravel their colloidal properties and surface chemistry through which it was found that they have a net negative charge and are stable between pH 3 and 10. Moreover, our initial toxicity tests showed that biochar colloids themselves are not toxic and they can be used in remediation applications, which led us to investigate (1) their copper sorption, a model inorganic contaminant, in a scenario that biochar colloids are released into the environment and (2) their potential use in organic pollutants adsorption and degradation. Copper sorption studies showed that biochar colloids have a copper sorption capacity as high as 22 mg g −1 in sub-ppm copper solutions. This increased the acute 48 h lethal concentration (LC 50) of copper for Daphnia magna by 21 ppb, which is comparable to the previously reported effect by dissolved organic matter. Adsorption and degradation of methylene blue (MB), an often-used proxy for organic contaminants in water, were studied by coupling the biochar colloids to positively charged TiO 2 nanoparticles and using it as a photocatalyst. The hybrid MB photodegradation efficiency was 21% higher than that of TiO 2 nanoparticles alone. Enhancement of demethylation is proposed as the main degradation mechanism of MB, as confirmed by liquid chromatography-mass spectroscopy (LC/MS), and the positive impact of biochar colloids is ascribed to their abundant adsorption sites, which may facilitate MB adsorption and its photocatalytic degradation.

show abstract

Nano‐biochar: Properties and prospects for sustainable agriculture

et al. 2023

View full text Add to dashboard Cite

Biochar is an extremely valuable carbon black material used since the Pre‐Columbian Era in Latin America and is known for its properties to promote soil fertility and sustain crop production. Modern civilization has followed the footsteps of ancient civilizations and has prepared nano‐sized biochar (nano‐BC). The synthesis of nano‐BC can be achieved using different feedstock materials via pyrolysis, yielding bulk‐BCs which are mechanical transformed into the nano‐BCs, the final value‐added product. This review provides insights into structural, functional, and elemental properties concerning synthesis, surface properties including functional groups, and carbon stability. Moreover, the prospects of improving soil physicochemical properties including CEC, nutrient availability, soil water retention, and buffering capacity are discussed with agricultural implications. Mechanistic insights have been provided regarding how nano‐BC can improve soil health and could promote plant growth and physio‐biochemical properties, which further pave the way for its application to improve plant resilience to abiotic stress factors. Last, limited studies have been conducted that elucidate potential negative effects including contaminant mobilization and residual effects and these are also critically discussed. Above all, nano‐BC could be used as a beneficial soil amendment to boost crop production and enhance soil fertilities.

show abstract

Characterization of nanoparticles of biochars from different biomass

Cited by 107 publications

References 42 publications

Application of biochar-based materials in environmental remediation: from multi-level structures to specific devices

Application of biochar-based materials in environmental remediation: from multi-level structures to specific devices

Biochar colloids and their use in contaminants removal

Nano‐biochar: Properties and prospects for sustainable agriculture

Contact Info

Product

Resources

About