Assessing the potential of sewage sludge-derived biochar as a novel phosphorus fertilizer: Influence of extractant solutions and pyrolysis temperatures

Figueiredo, Cícero Célio de; Reis, Arthur de Souza Prado Junqueira; Araujo, Alyson Silva de; Blum, Luiz Eduardo Bassay; Shah, Kalpit; Paz‐Ferreiro, Jorge

doi:10.1016/j.wasman.2021.01.044

Cited by 69 publications

(20 citation statements)

References 42 publications

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“…Compared with biochar from multiple feedstocks [19] and with other types of soil amendments [20], SSB has higher P levels, with great potential for use as a P fertilizer. Increases of Ca, Mg, S and micronutrients levels have also been reported in previous studies with SSB at 300ºC [8,17,21].…”

Section: Physical and Chemical Characteristicssupporting

confidence: 83%

“…The increase in PV is due to the increase in SA after a pyrolysis [25]. In the present study, SSB, produced at 300 °C, had SA (27.8 m 2 /g) and PV (0.102 cm 3 /g) similar to or higher than values presented by other studies with SSB [9,17,22,36]. In addition, the SA value is generally related to the porosity of the material, mainly with the micropore volume [29].…”

Section: Surface Area and Pore Volumesupporting

confidence: 67%

“…Consequently, SSB was poor Brazilian Archives of Biology and Technology. Vol.65: e22210592, 2022 www.scielo.br/babt in K, as reported previously [17]. This is the main limitation when using SSB as a fertilizer.…”

Section: Physical and Chemical Characteristicssupporting

confidence: 57%

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Pyrolysis of Sewage Sludge: Physical, Chemical, Morphological and Mineralogical Transformations

Fachini

Figueiredo

2022

Braz. arch. biol. technol.

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The sewage sludge (SS) use in agriculture has been limited by the Brazilian legislation to a few situations, mainly as a precautionary measure due to inorganic pollutants and pathogens. Thus, a large amount of SS has been accumulated in landfills, with no prospect of use, generating great concern for governments and society. Thermal treatment via pyrolysis has stood out as an option for SS recycling, transforming it into a carbon-rich product known as SS biochar (SSB). Biochar from SS showed good potential to be used for agricultural and environmental purposes. The present study aimed to evaluate the influence of pyrolysis at 300°C on the physical, chemical, morphological and mineralogical characteristics of SSB. In general, pyrolysis increased total carbon, total nitrogen, macro and micronutrient contents, except potassium. Pyrolysis also increased heavy metals (HMs) concentration in SSB. However, HMs values remained below the maximum limits allowed according to the legislation on SS agricultural use. X-ray analysis showed that both SS and SSB present silica (SiO2) as the main mineral. Pyrolysis also increased the SS surface area (SA) and porosity. In general, results of the present study prove showed that pyrolysis is a technological alternative to enable SS use as a sustainable input in agriculture.

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Section: Physical and Chemical Characteristicssupporting

confidence: 83%

Section: Surface Area and Pore Volumesupporting

confidence: 67%

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Pyrolysis of Sewage Sludge: Physical, Chemical, Morphological and Mineralogical Transformations

Fachini

Figueiredo

2022

Braz. arch. biol. technol.

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“…Biochar consists of a variety of nutrients, including K, Mg, K, Ca, and P, which are derived from the pyrolysis raw material. During pyrolysis, the dissolved organic material is also formed ( de Figueiredo et al, 2021 ). Hence, the biochar amalgamation could provide plants and microorganisms with bioavailable nutrients.…”

Section: Biochar Propertiesmentioning

confidence: 99%

Influences of Biochar on Bioremediation/Phytoremediation Potential of Metal-Contaminated Soils

Narayanan

2022

Front. Microbiol.

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A number of anthropogenic and weathering activities accumulate heavy metals in soils, causing adverse effects on soil characteristics, microbial activity (diversity), agricultural practices, and underground aquifers. Controlling soil heavy metal pollution is difficult due to its persistence in soils, resulting in the deposition and transmission into the food web via agricultural food products, ultimately affecting human health. This review critically explores the potential for remediation of metal-contaminated soils using a biochar-based responsible approach. Plant-based biochar is an auspicious bio-based residue substance that can be used for metal-polluted soil remediation and soil improvement as a sustainable approach. Plants with rapid growth and increased biomass can meet the requirements for phytoremediation in large quantities. Recent research indicates significant progress in understanding the mechanisms of metal accumulation and contaminant movement in plants used for phytoremediation of metal-contaminated soil. Excessive contamination reduces plant biomass and growth, which has substantial hyperaccumulating possibilities and is detrimental to the phytoremediation process. Biochar derived from various plant sources can promote the growth and phytoremediation competence of native or wild plants grown in metal-polluted soil. Carbon-enriched biochar encourages native microbial growth by neutralizing pH and providing nutritional support. Thus, this review critically discusses the influence of plant and agricultural waste-based biochar on plant phytoremediation potential in metal-contaminated soils.

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“…Simultaneously, a larger amount of magne- Notably, in addition to being a good source of nutrients, its excellent characteristics, including high pH, water retention, and CEC (Table 1) values, could partly account for the observed growth stimulation in lettuce. There were correlated consequences of increasing pH in the P-BC-LDH-treated growing media, where microorganism activity and nutrient availability were consecutively promoted in addition to aluminum tolerance, and therefore were beneficial to plant growth [43,44]. The biochar used in this study exhibited well developed porosity and a large surface area, and as such, there were many advantages in the addition of P-BC-LDHs in terms of the alteration of physical properties of the substrate, such as water storage capacity, penetration resistance, and bulk density.…”

Section: Early Growth Stagementioning

confidence: 99%

Application of Biochar Functionalized with Layered Double Hydroxides: Improved Plant Growth Performance after Use as Phosphate Adsorbent

Buates

Imai

2021

Applied Sciences

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The objective of this study was to verify the feasibility of using biochar, functionalized with layered double hydroxides, as a fertilizer after its use in phosphate treatment (P-BC-LDHs). It was conducted with several levels of P-BC-LDHs using seed germination and early growth assays of lettuce (Lactuca sativa L.). The application of P-BC-LDHs resulted in successful seedling emergence, with an excellent germination capacity of over 96% for all treatments. However, compared to the controls, P-BC-LDHs did not provide favorable seedling traits. In contrast, in the latter experiments, lettuce cultivated under mixtures with P-BC-LDHs, particularly at an application rate of 2.5% (w/w), displayed superior growth quality to those under non-treated conditions. The length of lettuce shoots and roots from this optimal dosage were increased by at least 24% compared to untreated samples. A 17% reduction in biomass yield was observed for the samples from non-supplemented substrates. The nutrient release profiles showed that P-BC-LDHs were capable of slowly supplying phosphorus, thereby increasing the long-term nutrient availability for plants. The findings reported here provide important insights into these materials and confirm that P-BC-LDHs can be used for agricultural purposes after phosphate remediation applications. The results of this study provide constructive information to facilitate the implementation of biochar-based LDH composites for sustainable phosphate removal and recovery.

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Assessing the potential of sewage sludge-derived biochar as a novel phosphorus fertilizer: Influence of extractant solutions and pyrolysis temperatures

Cited by 69 publications

References 42 publications

Pyrolysis of Sewage Sludge: Physical, Chemical, Morphological and Mineralogical Transformations

Pyrolysis of Sewage Sludge: Physical, Chemical, Morphological and Mineralogical Transformations

Influences of Biochar on Bioremediation/Phytoremediation Potential of Metal-Contaminated Soils

Application of Biochar Functionalized with Layered Double Hydroxides: Improved Plant Growth Performance after Use as Phosphate Adsorbent

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