Tailoring the phosphorus release from biochar-based fertilizers: role of magnesium or calcium addition during co-pyrolysis

Jetsrisuparb, Kaewta; Jeejaila, Thanawan; Saengthip, Chanon; Kasemsiri, Pornnapa; Ngernyen, Yuvarat; Chindaprasirt, Prinya; Knijnenburg, Jesper T.N.

doi:10.1039/d2ra05848k

Cited by 5 publications

(3 citation statements)

References 57 publications

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“…As a result, it increases the nutrient content in BCEKH [31]. The X-ray diffraction pattern showed that Ca2P2O7 peaks appeared at 2θ of 20.18°, 23.893°, 26.652°, 27.674°, 29.867°, 35.285°, indicating that a part of CaCO3 reacted with H3PO4 during pyrolytic heating process [32]. Previous studies have shown that phosphorus-modified biochar can increase the number and thickness of biofilms, further increasing beneficial microbial survival [24].…”

Section: Xrd and Ftir Analysis Of Bcekhand B@pmmentioning

confidence: 98%

“…Furthermore, P and Ca releases are more aligned with the Power function as indicated by the parameters c and an in the Power function. Kinetic equations have rarely been used in previous studies to assess the release of modified biochar-loaded bacteria in soil, and the kinetics of modified biochar on P in static water generally conforms to the Power function model and Parabolic diffusion model [32,42]. In this case, the release of K is more in line with the Parabolic diffusion model (R 2 up to 0.99 in both cases), which proves that the release of K is more likely to be diffuse.…”

Section: Slow-release Behavior Of the B@pmmentioning

confidence: 99%

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Calcium-Based Biochar Loaded with Paenibacillus mucilaginosus Acted as an Eco-Friendly Strategy to Enhance Soil Nutrients and Plant Biomass

Zhang,

Wang,

Cao

et al. 2024

Preprint

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The loose and porous structure and abundant pores of biochar provide conditions for being a suitable fertilizer carrier. Biochar loaded with beneficial microorganisms will greatly promote plant growth and soil improvement. In this work, an environmentally friendly Paenibacillus mucilaginosus loaded biochar-based fertilizer (B@PM) with high nutrient content, good slow-release effect and increased biological activity was prepared. The released mechanism of P-K-Ca from B@PM and the synergistic effect on the soil nutrients and plant growth were also analyzed. The experimental results showed that the release behavior of P, K and Ca from B@PM was diffusive and dissolved, which conforms to the Power function and Parabolic diffusion models, respectively. The potting experiment showed that the root length (30.77%), leaf width (71.67%), and plant height (81.08%) of Chinese cabbage were enhanced after the application of B@PM, and the organic matter, available phosphorus, available potassium, and total calcium in the soil were also substantially enhanced. In addition, the abundance of the Proteobacteria, Actinobacteria, Bacteroidetes and Firmicutes in the in the rhizosphere soil was increased, as well as the activities of catalase (82.84%) and alkaline phosphatase (39.64%). The results of RDA analyses showed that B@PM increased the content of the environmental factors, such as OM, URE, EC, TCa, AK, CAT, AP and ALP, thus improving soil quality and plant length.

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Section: Xrd and Ftir Analysis Of Bcekhand B@pmmentioning

confidence: 98%

Section: Slow-release Behavior Of the B@pmmentioning

confidence: 99%

Calcium-Based Biochar Loaded with Paenibacillus mucilaginosus Acted as an Eco-Friendly Strategy to Enhance Soil Nutrients and Plant Biomass

Zhang,

Wang,

Cao

et al. 2024

Preprint

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“…Recently, numerous strategic methodologies, including optimisation of pyrolysis conditions and temperature, activating agents, and pH, have been developed to tailor the physico-chemical properties of biochar. 15 Due to these tuneable properties, biochar finds diverse applications in many fields, including soil remediation, 16 carbon storage, 17 manure composting, 18 decontamination of water and waste water 19,20 by means of micro and macro filters, 21 biogas production, 22 detoxificants, 23 in the building sector, 24 air pollution management, 25 in textiles as a fabric addictive and flame-retardant clothing, 26 catalysts, 27 activators, 1 electrode materials, and modifiers. 28 It has also been reported that the stable porous matrix of the biochar acts as a good microenvironment for microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Multi-functionalization of woody biochar tuned for sustainable surface microbiological processes: a case study for energy applications

Ratheesh

Sreelekshmy

Shibli

2023

Sustainable Energy Fuels

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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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Tailoring the phosphorus release from biochar-based fertilizers: role of magnesium or calcium addition during co-pyrolysis

Abstract: The addition of MgO in the co-pyrolysis of sugarcane filter cake with H3PO4 resulted in a biochar-based fertilizer with gradual P release over time. In contrast, the P release from the biochar modified with CaO and H3PO4 was poor.

Cited by 5 publications

References 57 publications

Calcium-Based Biochar Loaded with Paenibacillus mucilaginosus Acted as an Eco-Friendly Strategy to Enhance Soil Nutrients and Plant Biomass

Calcium-Based Biochar Loaded with Paenibacillus mucilaginosus Acted as an Eco-Friendly Strategy to Enhance Soil Nutrients and Plant Biomass

Multi-functionalization of woody biochar tuned for sustainable surface microbiological processes: a case study for energy applications

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

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