Biochar modification and application to improve soil fertility and crop productivity

Ghassemi‐Golezani, Kazem; Rahimzadeh, Saeedeh

doi:10.2478/agri-2022-0005

Cited by 9 publications

(2 citation statements)

References 107 publications

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“…Greater flow rates and longer treatment times enhanced the sorption of Zn, Cu, and Cd on the surface of the adsorbent 93 . However, activation with steam increases the porosity and surface area of the biochar, found in a study conducted by Ghassemi-Golezani and Rahimzadeh 94 the copper removal capacity of slow pyrolysis-derived biochar of Miscanthus was not notably changed by modification with steam at 800 °C. They noticed that while steam activation of treated biochar enhanced the surface area, many functional groups were reduced, alongside a rise in aromaticity.…”

Section: Various Modification Techniques For the Preparation Of Funct...mentioning

confidence: 84%

Recent trends and economic significance of modified/functionalized biochars for remediation of environmental pollutants

Murtaza,

Ahmed,

Valipour

et al. 2024

Sci Rep

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The pollution of soil and aquatic systems by inorganic and organic chemicals has become a global concern. Economical, eco-friendly, and sustainable solutions are direly required to alleviate the deleterious effects of these chemicals to ensure human well-being and environmental sustainability. In recent decades, biochar has emerged as an efficient material encompassing huge potential to decontaminate a wide range of pollutants from soil and aquatic systems. However, the application of raw biochars for pollutant remediation is confronting a major challenge of not getting the desired decontamination results due to its specific properties. Thus, multiple functionalizing/modification techniques have been introduced to alter the physicochemical and molecular attributes of biochars to increase their efficacy in environmental remediation. This review provides a comprehensive overview of the latest advancements in developing multiple functionalized/modified biochars via biological and other physiochemical techniques. Related mechanisms and further applications of multiple modified biochar in soil and water systems remediation have been discussed and summarized. Furthermore, existing research gaps and challenges are discussed, as well as further study needs are suggested. This work epitomizes the scientific prospects for a complete understanding of employing modified biochar as an efficient candidate for the decontamination of polluted soil and water systems for regenerative development.

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Section: Various Modification Techniques For the Preparation Of Funct...mentioning

confidence: 84%

Recent trends and economic significance of modified/functionalized biochars for remediation of environmental pollutants

Murtaza,

Ahmed,

Valipour

et al. 2024

Sci Rep

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“…The Fergana region is located in the east of the republic, in the western and southern parts of the Fergana Valley, including the plains of the valley, and the foothills of the Alai and Turkestan ranges. Its total area is 7.9 thousand square km and is distinguished by a variety of soil cover [14][15]. The soils of the Fergana region have been studied in depth and detail, as a result of which schematic hydrogeological, agrochemical, and reclamation maps of the soils of the region have been developed, and scientifically based farming systems have been created.…”

Section: Resultsmentioning

confidence: 99%

Soil fertility in agriculture: Main tasks

Ibragimov,

Domuladjanov,

Domuladjonova

2023

E3S Web Conf.

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Today, the problem of soil degradation is developing in the Fergana region of Uzbekistan. Improving the quality and productivity of the soil is an urgent task for specialists in the field. In the article, the necessary information for increasing soil fertility and working with the soil of farmers and peasant farms operating in the region was provided. Experimental studies - experiments were conducted in field conditions. They consisted of 8 options and were implemented according to the 4 return system. Various aspects of soil fertility related to the amount of soil and humus in it were considered. Soil is fertile only when there is enough humus, soils with low humus are biologically dead and have low fertility. In our conditions, scientific studies have shown that the amount of humus in the soil is at least 1.5-2%. Analyzes were conducted to determine the mechanical composition of the soils of the experimental area. It was found that there is 27.6 mg/kg of nitrate nitrogen in the arable layer (0-30 cm) and 23.4 mg/kg in the bottom (30-50 cm). The lower soil layers of 70-150 cm are poorly supplied with humus and nutrients. Depending on the state of reclamation, the amount of soluble salts in the water is moderately sulfate-saline, the content is 0.46-0.78%, and the level of underground water is 1.6-2.0 meters. Experiments on replenishment of nutrients from crops in cultivated fields, mainly due to organic fertilizers, at least 10-15 tons of organic fertilizers per year in the amount of 50-70%, soilless waste, composts, phosphorus and potash fertilizers showed the need to use gites. Strict observance of regional ploughing and fertilization according to agrochemical cartograms depending on the type of soil crops. However, as a result of non-compliance with crop rotation, unscientific use of organic mineral fertilizers and resource-saving technologies, the amount of humus on irrigated lands decreased by 50%. To improve soil productivity, the article gives recommendations for improving soil quality.

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Machine learning and computational chemistry to improve biochar fertilizers: a review

Osman,

Zhang,

Lai

et al. 2023

Environ Chem Lett

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Traditional fertilizers are highly inefficient, with a major loss of nutrients and associated pollution. Alternatively, biochar loaded with phosphorous is a sustainable fertilizer that improves soil structure, stores carbon in soils, and provides plant nutrients in the long run, yet most biochars are not optimal because mechanisms ruling biochar properties are poorly known. This issue can be solved by recent developments in machine learning and computational chemistry. Here we review phosphorus-loaded biochar with emphasis on computational chemistry, machine learning, organic acids, drawbacks of classical fertilizers, biochar production, phosphorus loading, and mechanisms of phosphorous release. Modeling techniques allow for deciphering the influence of individual variables on biochar, employing various supervised learning models tailored to different biochar types. Computational chemistry provides knowledge on factors that control phosphorus binding, e.g., the type of phosphorus compound, soil constituents, mineral surfaces, binding motifs, water, solution pH, and redox potential. Phosphorus release from biochar is controlled by coexisting anions, pH, adsorbent dosage, initial phosphorus concentration, and temperature. Pyrolysis temperatures below 600 °C enhance functional group retention, while temperatures below 450 °C increase plant-available phosphorus. Lower pH values promote phosphorus release, while higher pH values hinder it. Physical modifications, such as increasing surface area and pore volume, can maximize the adsorption capacity of phosphorus-loaded biochar. Furthermore, the type of organic acid affects phosphorus release, with low molecular weight organic acids being advantageous for soil utilization. Lastly, biochar-based fertilizers release nutrients 2–4 times slower than conventional fertilizers.

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Biochar modification and application to improve soil fertility and crop productivity

Cited by 9 publications

References 107 publications

Recent trends and economic significance of modified/functionalized biochars for remediation of environmental pollutants

Recent trends and economic significance of modified/functionalized biochars for remediation of environmental pollutants

Soil fertility in agriculture: Main tasks

Machine learning and computational chemistry to improve biochar fertilizers: a review

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