Transformation of phosphorus in sewage sludge biochar mediated by a phosphate-solubilizing microorganism

Qian, Tingting; Qin, Yang; Jun, Desmond Chua Feng; Dong, Fengquan; Zhou, Yan

doi:10.1016/j.cej.2018.11.015

Cited by 80 publications

(41 citation statements)

References 42 publications

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“…Phosphorus species with a short chain length or poor crystal structure was formed on sewage sludge biochar pyrolyzed at 400 • C rather than 700 • C and exhibited high bioavailability for phosphate-solubilizing microorganisms, such as Pseudomonas putida. The phosphorus species on biochar could be further transformed by P. putida to orthophosphate [169]. Microbial biomass and soil enzyme activity were also important factors governing phosphorus mineralization.…”

Section: Nitrification Transforms Nhmentioning

confidence: 99%

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

Pan

Dong

et al. 2021

Sustainability

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Biochar is a carbon-rich material prepared from the pyrolysis of biomass under various conditions. Recently, biochar drew great attention due to its promising potential in climate change mitigation, soil amendment, and environmental control. Obviously, biochar can be a beneficial soil amendment in several ways including preventing nutrients loss due to leaching, increasing N and P mineralization, and enabling the microbial mediation of N2O and CO2 emissions. However, there are also conflicting reports on biochar effects, such as water logging and weathering induced change of surface properties that ultimately affects microbial growth and soil fertility. Despite the voluminous reports on soil and biochar properties, few studies have systematically addressed the effects of biochar on the sequestration of carbon, nitrogen, and phosphorus in soils. Information on microbially-mediated transformation of carbon (C), nitrogen (N), and phosphorus (P) species in the soil environment remains relatively uncertain. A systematic documentation of how biochar influences the fate and transport of carbon, phosphorus, and nitrogen in soil is crucial to promoting biochar applications toward environmental sustainability. This report first provides an overview on the adsorption of carbon, phosphorus, and nitrogen species on biochar, particularly in soil systems. Then, the biochar-mediated transformation of organic species, and the transport of carbon, nitrogen, and phosphorus in soil systems are discussed. This review also reports on the weathering process of biochar and implications in the soil environment. Lastly, the current knowledge gaps and priority research directions for the biochar-amended systems in the future are assessed. This review focuses on literatures published in the past decade (2009–2021) on the adsorption, degradation, transport, weathering, and transformation of C, N, and P species in soil systems with respect to biochar applications.

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Section: Nitrification Transforms Nhmentioning

confidence: 99%

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

Pan

Dong

et al. 2021

Sustainability

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“…Furthermore, the PO 4 3− concentration of SP-PW shows a pronounced increment than that in soil incubated under the other three soil water status. PO 4 3− -mineralizing bacteria, including genera Bacillus, Pseudomonas, and Rhizobium, play a critical role in the transformation of insoluble PO 4 3− minerals into soluble forms (Rodríguez and Fraga 1999;Qian et al 2019). Stimulation of PO 4 3− -mineralizing microbial growth under water logged conditions, followed by water deficient conditions, might be responsible for the elevated plant available PO 4 3 − concentrations in SP-PW treatments.…”

Section: Discussionmentioning

confidence: 99%

Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil

et al. 2019

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Purpose This study was conducted to evaluate the synergistic effects of organic amendments and soil water status on trace metal release from serpentine soil. Materials and methods Two organic amendments, dendro-biochar (BC) and municipal solid waste compost (CM), were added to serpentine soil at four different ratios, specifically 2.5:0.0, 2.5:1.0, 2.5:2.5, and 2.5:5.0% (w/w). Along with the control (with no organic amendments), each soil treatment was incubated separately under saturated point (SP) and field capacity (FC) water content for 10 days. Subsamples were obtained from each treatment to analyze the bioavailable trace metal concentration and related edaphic parameters, namely total organic carbon (TOC), nitrate (NO 3 −), phosphate (PO 4 3−), and cation exchange capacity (CEC). Then, the soil solution was eluded from each treatment and incubated for 10 days under permanent wilting point (PW). Furthermore, a seed germination test was performed under the different treatments. Results and discussion Significant reductions (p < 0.05) in bioavailable concentration of all four trace metals were observed in all the amendment ratios under all water status treatments (SP, FC, SP-PW, and FC-PW), compared with the control. Furthermore, FC-PW with the highest amendment ratio (2.5% BC:5.0% CM) reduced Ni by 67.6%; FC-PW with 2.5% BC + 2.5% CM immobilized Mn and Co by 92.1 and 96.9%, respectively, and SP water status with all four amendment ratios immobilized 100% of bioavailable Cr. Maximum amendment ratio under all four water status enhanced %TOC and significantly increased PO 4 3− concentration in SP-PW. However, FC showed comparatively high NO 3 − concentration than other treatments. Germination index (GI) for mung beans and tomato did not show a significant difference in response to amendment ratios or soil water status; however, SP treatment expressed significantly high seedling vigor (SVI) for mung beans. Conclusions Treatments of BC and CM effectively immobilize the bioavailable fraction of trace metals in serpentine soils. Increasing amendment ratio increases the %TOC regardless of the soil water status, whereas SP-PW is favorable for the availability of PO 4 3− , and FC is favorable for availability of NO 3 −. The GI for mung beans and tomato seed was not influenced by the soil water status nor by the amendment ratios. However, the SVI of mung bean seedlings was controlled by the soil water status.

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“…Soil microorganisms (bacteria and fungi) can convert insoluble forms of P into an accessible form that can be absorbed by plants ( Paul et al, 2018 ). These kinds of microorganisms are called phosphate-solubilizing microorganisms (PSMs), which include phosphate-solubilizing bacteria (PSB) and phosphate-solubilizing fungi (PSF) ( Qian et al, 2019 ). The PSB involved in the phosphorus conversion process are Pseudomonas , Mycobacterium , Bacillus subtilis , Rhizobium , Azotobacter , and Agrobacterium ( Babalola and Glick, 2012 ; Sharma et al, 2013 ; Qian et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Rhizosphere Microbial Communities Are Significantly Affected by Optimized Phosphorus Management in a Slope Farming System

et al. 2021

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Soil rhizosphere microorganisms play crucial roles in promoting plant nutrient absorption and maintaining soil health. However, the effects of different phosphorus (P) managements on soil microbial communities in a slope farming system are poorly understood. Here, rhizosphere microbial communities under two P fertilization levels—conventional (125 kg P2O5 ha–1, P125) and optimal (90 kg P2O5 ha–1, P90)—were compared at four growth stages of maize in a typical sloped farming system. The richness and diversity of rhizosphere bacterial communities showed significant dynamic changes throughout the growth period of maize, while different results were observed in fungal communities. However, both the P fertilization levels and the growth stages influenced the structure and composition of the maize rhizosphere microbiota. Notably, compared to P125, Pseudomonas, Conexibacter, Mycobacterium, Acidothermus, Glomeromycota, and Talaromyces were significantly enriched in the different growth stages of maize under P90, while the relative abundance of Fusarium was significantly decreased during maize harvest. Soil total nitrogen (TN) and pH are the first environmental drivers of change in bacterial and fungal community structures, respectively. The abundance of Gemmatimonadota, Proteobacteria, and Cyanobacteria showed significant correlations with soil TN, while that of Basidiomycota and Mortierellomycota was significantly related to pH. Additionally, P90 strengthened the connection between bacteria, but reduced the links between fungi at the genus level. Our work helps in understanding the role of P fertilization levels in shaping the rhizosphere microbiota and may manipulate beneficial microorganisms for better P use efficiency.

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Transformation of phosphorus in sewage sludge biochar mediated by a phosphate-solubilizing microorganism

Cited by 80 publications

References 42 publications

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems

Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil

Rhizosphere Microbial Communities Are Significantly Affected by Optimized Phosphorus Management in a Slope Farming System

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