Direct and residual effect of biochar derived from biosolids on soil phosphorus pools: A four-year field assessment

Figueiredo, Cícero Célio de; Pinheiro, Thamires Dutra; Oliveira, Luiz Eduardo de; Araujo, Alyson Silva de; Coser, Thais Rodrigues; Paz‐Ferreiro, Jorge

doi:10.1016/j.scitotenv.2020.140013

Cited by 38 publications

(26 citation statements)

References 41 publications

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“…Compared to control, the soil total N and P obviously increased after biochar amendment to the soil (Zhang et al 2019) because the application of a high dose of biochar with the high levels of total P and N provides a large amount of N and P to the soil (De Figueiredo et al 2020). During this case study, we found that there were no significant differences (P > 0.05) among all three types of biochar in Udept soil for soil total N and P concentrations.…”

Section: Soil Chemical Properties Derived From Different Biochar Amendmentsmentioning

confidence: 65%

Biochar and soil properties limit the phytoavailability of lead and cadmium by Brassica chinensis L. in contaminated soils

Houssou

Jeyakumar

Niazi

et al. 2022

Biochar

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The current study investigated the effect of biochars derived from cinnamomum woodchip, garden waste and mulberry woodchip on soil phytoavailable lead (Pb), cadmium (Cd) pools, and their uptake by Chinese cabbage (Brassica chinensis L.). The biochars were produced at 450 °C of pyrolysis temperature. The contaminated soils were collected from Yunfu (classified as Udept), Jiyuan (Ustalf) and Shaoguan (Udult) cities in China at the depth of 0–20 cm and amended with biochars at the rate of 3% w/w. After mixing the soil with biochar for 14 days, the Chinese cabbage was planted in the amended soils. Then, it was harvested on the 48th day after sowing period. In Udult soil, Chinese cabbage died 18 days after sowing period in control and soils amended with cinnamomum and mulberry biochars. Although only plants grown with the garden waste biochar treatment survived in Udult soil, amendment of garden waste or mulberry biochars at 3% w/w (450 °C) to Udult soil significantly increased (4.95–6.25) soil pH compared to other biochar treatments. In Udept and Ustalf soils, the application of garden waste and mulberry biochars significantly improved plant biomass compared to control, albeit it was dependent on both biochar and soil properties. Garden waste biochar significantly decreased soil Cd phytoavailable concentration by 26% in the Udult soil, while a decrease of soil Cd phytoavailable concentration by 16% and 9% was observed in Ustalf and Udept soils, respectively. The available phosphorus in biochar and soil pH were important factors controlling toxic metal phytouptake by the plant. Thus, the amendment of soil with biochar at 3% can effectively reduce the mobility of Cd and Pb in soil and plant uptake. However, biochar and soil properties should be well-known before being used for soil toxic metal immobilization.

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Section: Soil Chemical Properties Derived From Different Biochar Amendmentsmentioning

confidence: 65%

Biochar and soil properties limit the phytoavailability of lead and cadmium by Brassica chinensis L. in contaminated soils

Houssou

Jeyakumar

Niazi

et al. 2022

Biochar

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“…Application of acidic biochars can greatly increase available P fractions (H 2 O-P and NaHCO 3 -Pi) content in the alkaline soil due to the competition between free cations in the soil with biochar surface for adsorption sites on phosphate [11,38]. Therefore, when incorporated into the soil, modi ed biochars can change the availability of P by indirectly transforming P fractions through the changes in soil properties, as suggest by Glaser et al [7] and Figueiredo et al [39].…”

Section: Discussionmentioning

confidence: 99%

Effects of acidic phosphorus-rich biochar from halophyte species on P availability and fractions in alkaline soils

Wang

Sun

et al. 2022

Preprint

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Conditioning alkaline soil with acidic phosphorus-rich biochar might contribute to achieving sustainable phosphorus (P) use and residue management. In this study, acidic phosphorus-rich biochar was prepared from halophyte species biochar (HBC) by the modification of H3PO4 (P-HBC) and H4P2O7 (PA-HBC). The P combination method and fractions in biochars were characterized, and the effects of biochars on P fractions in different types of alkaline soil were examined with incubation experiments. The results showed that the pH values of P-HBC (3.31) and PA-HBC (2.17) decreased significantly, and the total P content increased to 4.66 g·kg− 1 and 5.24 g·kg− 1, respectively. The spectral analysis confirmed the doping of P and acid groups in biochar. The addition of modified biochars in alkaline soils will makes the soil tend to be neutral. Sequential extraction of soil P confirmed that biochars application facilitated the transformation of stable P into active fractions, with greater effects from modified biochars than HBC. Activation mechanism of biochar to soil P fractions varies from soil types. Overall, acidic phosphorus-rich biochars can be employed to improve alkaline soil properties and increase P activity.

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“…Therefore, targeting specific char characteristics could be achieved by using select temperatures. For example, land applying biosolidsderived char (produced at 300 C and 500 C) at 15-tonnes/ha to a moderately acidic soil increased pH, TP, and corn grain yield and did not result in an accumulation of heavy metals, indicating that char could be a suitable replacement for mineral fertilizers (de Figueiredo et al, 2019(de Figueiredo et al, , 2020. Sludge-derived char (produced at 600 C) applied at 1.7-tonnes/ha was also beneficial to moderately alkaline soils, increasing TP and K concentrations and corn yield while decreasing the uptake of metals (Xie et al, 2021).…”

Section: Charmentioning

confidence: 99%

Pyrolysis and gasification at water resource recovery facilities: Status of the industry

Winchell

Ross

Brose

et al. 2022

Water Environment Research

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Wastewater treatment generates solids requiring subsequent processing. Costs and contaminant concerns (e.g., per‐ and polyfluoroalkyl substances [PFAS]) are challenging widely used landfilling and land application practices. These circumstances are partly driving the re‐emergence of pyrolysis and gasification technologies along with beneficial reuse prospects of the char solid residual. Previously, technologies experienced operational challenges leading to revised configurations, such as directly coupling a thermal oxidizer to the reactor to destroy tar forming compounds. This paper provides an overview of pyrolysis and gasification technologies, characteristics of the char product, air emission considerations, and potential fate of PFAS and other pollutants through the systems. Results from a survey of viable suppliers illustrate differences in commercially available options. Additional research is required to validate performance over the long‐term operation and confirm contaminant fate, which will help determine whether resurging interest in pyrolysis and gasification warrants widespread adoption. Practitioner Points Pyrolysis and gasification systems are re‐emerging in the wastewater industry. Direct coupling of thermal oxidizers and other modifications offered by contemporary systems aim to overcome past failures. Process conditions when coupled with a thermal oxidizer will likely destroy most organic contaminants, including PFAS, but requires additional research. Three full‐scale facilities recently operated, several in construction or design that will provide operating experience for widespread technology adoption consideration.

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Direct and residual effect of biochar derived from biosolids on soil phosphorus pools: A four-year field assessment

Cited by 38 publications

References 41 publications

Biochar and soil properties limit the phytoavailability of lead and cadmium by Brassica chinensis L. in contaminated soils

Biochar and soil properties limit the phytoavailability of lead and cadmium by Brassica chinensis L. in contaminated soils

Effects of acidic phosphorus-rich biochar from halophyte species on P availability and fractions in alkaline soils

Pyrolysis and gasification at water resource recovery facilities: Status of the industry

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