Nanobiochar: A sustainable solution for agricultural and environmental applications

Definitive Review of Nanobiochar

“…Biochar with different characteristic properties has been applied in diverse fields such as adsorbents, sensors, soil conditioners, and carbon sequestration. − ,,,, Feedstock used and preparation conditions, play key roles in the successful production of desired biochar properties. − , As expected, nanobiochar will have characteristics derived from the precursor macro-biochar from which they were derived by particle size reduction. However, several of the nanobiochar properties will differ, including surface area, pore volume, pore size, and zeta potentials. ,, These changes arise during particle size reduction as well as specific influences of the nanobiochar preparation techniques. For example, changing the biomass feedstock can influence the resulting biochar particle sizes and the nanobiochar composition (e.g., carbon (%), minerals, surface functional groups, aromatic clusters, zeta potential, colloidal stability, and ash content).…”

“…Growing environmental challenges are driving research and innovative applications toward a more sustainable future. , Climate changes require swift strides toward transitioning to a carbon-neutral or carbon-negative future, alleviating the environmental strain induced by human activities. , In this scenario, the circular economy approach is gaining increasing momentum by bolstering the economy, building dual use paths for existing materials, encouraging biomass feedstock replacement of fossil fuels, while also safeguarding the environment. , By employing circular economy principles,, it is possible to diminish pollution and waste through effective recycling and optimized utilization. Then by using renewable resources to replace nonrenewable starting materials additional gains toward carbon neutrality can be made. ,, The manufacturing of nanobiochar derived from waste biomass and its subsequent use in multiple applications has emerged as another method to apply within the realm of the circular economy. , Potential nanobiochar applicability extends across fields such as water pollution remediation, agriculture, rubber filler, cement additives, and targeted drug delivery in a sustainable manner due to its heightened efficiency when compared to pristine biochar. ,, It can be viewed as one subsection of broader contribution that the sum of all biochar uses can contribute . Increasing nanobiochar use holds promise for boosting the economic potential of biomass pyrolysis where its advantages over pristine biochar are sufficient.…”

“…Nanobiochar fits this objective as a waste biomass product applied as a soil amendments to improve farm economies . Likewise, the zero hunger objective of SDG 2 may be achieved through the nanobiochar use as a soil amendment slow-release fertilizer to enhance crop productivity to meet the food demands of a growing population. , Utilizing nanobiochar in addressing soil and water pollution, as well as facilitating targeted drug delivery, would contribute to achieving good health and well-being, aligning with SDG 3 objective. ,, Nanobiochar has potential to contribute to achieving SDG 6 , focusing on clean water and sanitation. , Adding nanobiochar to fuels improves fuel combustion efficiency while decreasing NOx, CO and unburned hydrocarbon emissions which corresponds to the aiding in SDG 7 objectives (ensuring access to affordable and clean energy) . Incorporating nanobiochar into cementitious materials not only aids in carbon sequestration but also enhances the mechanical properties of cement composites.…”

A Review on Magnetic Nanobiochar with Their Use in Environmental Remediation and High-Value Applications

“…The requisite temperature for this pyrolysis is between 900 and 1,200°C [6]. Pyrolyzing temperature is important for the formation of biochar because if the temperature is low, the production of biochar will be high, and if the temperature is high, the production of biochar will be low [7]. Choosing feedstock in the production of biochar is also an important part and it can be anything like plant material, a waste product, animal debris, municipality sludge, etc.…”

“…MNBC not only helps in the reduction of pollution but also saves the waste biomass by recycling [8]. In addition, nanobiochar helps in plant growth improvement, soil fertility enhancements, and nutrient retention [7]. Since biochar is a carbon sequester, so it is mostly used in agricultural farms as a fertilizer, which makes the soil contaminants free and holds the moisture of soil due to its water-holding capacity [9].…”