Effect of biochar amendment on greenhouse gas emission and bio-availability of heavy metals during sewage sludge co-composting

Awasthi, Mukesh Kumar; Wang, Quan; Huang, Hui; Li, Ronghua; Shen, Feng; Lahori, Altaf Hussain; Wang, Ping; Guo, Di; Guo, Zizhang; Jiang, Shuncheng; Zhang, Zengqiang

doi:10.1016/j.jclepro.2016.07.008

Cited by 151 publications

(39 citation statements)

References 31 publications

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“…Utilization of these wastes in an environmentally friendly manner has received much attention [4][5][6]. Composting is an effective and acceptable biological process to convert organic solid wastes into fertilizer or soil conditioner for agricultural use, as composting improves soil fertility, reduces greenhouse gas emissions, and remediates soil heavy metal pollution [7][8][9][10][11]. During composting, unstable organic solid wastes are transformed into stable complex compounds such as humic acids (HAs) [12,13], which have larger molecular weights and higher aromaticity [14].…”

Section: Introductionmentioning

confidence: 99%

Insight into the cadmium and zinc binding potential of humic acids derived from composts by EEM spectra combined with PARAFAC analysis

et al. 2020

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AbstractTo investigate the characteristics of humic acids (HAs) and the combined effects of HAs on heavy metals, three HAs derived from kitchen waste compost (KW), pig manure compost (PM), and green waste compost (GW) were exposed to Cd(II) and Zn(II). The elemental contents and functional groups of HAs were different due to different raw materials. Fulvic-, humic-like content C1, humic-like content C4, and two protein-like contents C2 and C3 were identified in three HAs by EEM-PARAFAC analysis. The effects of HAs on heavy metals were associated with the metal species and HA source. Our results reveal that titrating Cd(II) caused stronger fluorescence quenching compared to titrating Zn(II) for all HAs. C1 and C4 of KW-HAs and PM-HAs showed fluorescence quenching after Cd(II) was added, whereas negligible fluorescence quenching was found when Zn(II) was added. In addition, C1 and C4 in the GW-HAs did not show obvious fluorescence quenching regardless of whether Cd(II) or Zn(II) was added. C3 in all HAs caused significant fluorescence quenching, suggesting that C3 plays an important role affecting the mobility of heavy metals. Consequently, these results suggest that HAs from KW and PM have greater potential for Cd-contaminated soil remediation than those from GW.

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Section: Introductionmentioning

confidence: 99%

Insight into the cadmium and zinc binding potential of humic acids derived from composts by EEM spectra combined with PARAFAC analysis

et al. 2020

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“…However, agricultural use of untreated SS may pose a risk of soil sanitary contamination and odour emission, and an indirect risk to the environment, due to the possibility of greenhouse gases (GHGs) emissions after soil application. The problem of GHGs, ammonia, and N 2 O emissions during the composting of SS is well known and has been described by many authors [1][2][3][4][5]. In order to reduce GHGs emissions during the composting process, many methods are recommended, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…In order to reduce GHGs emissions during the composting process, many methods are recommended, e.g. zeolites [1], biochar [2] in a compost mixture or simply covering compost windrows with a thick layer of peat [5]. On the other hand, immature compost or other organic fertilizers that contain biodegradable organic matter may trigger GHGs emissions in soil [6].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Composition Changes, Stability Degree and the Potential of Biogas Formation of Sewage Sludge Composts During Maturation Process

Bożym

Siemiątkowski

2019

Waste Biomass Valor

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The aim of this study was to assess the degree of stabilization of composted sewage sludge (SSC) during maturation using tests in aerobic and anaerobic conditions, determining the potential for biogas formation and its composition, as well as changes of mobile and bioavailable forms of metals in SSC after treatment. The samples were taken in the second phase of composting, during the maturation process. The biological stability of SSC samples was determined by detecting an incubation test (GS 21 ) and respiration index (AT 4 ). The potential for biogas formation and composition changes of SSC during maturation were analyzed. It was found that the chemical composition of the tested samples depended on the degree of their maturity. It was found that the both tested methods (AT 4 , GS 21 ) of assessing the stability of waste are sufficient. Treatment under anaerobic conditions did not significantly change the composition of the samples, with the exception of total organic carbon (TOC). A high percentage of methane in biogas for samples at the beginning of the maturation process indicates a high content of biodegradable organic matter in SSC. In addition, the decrease of mobile and bioavailable forms of heavy metals percentage, during the SSC maturation, was found. In order to confirm the results of current study, a long-term field studies should be carried out on the effects of SSCs tested on soils and plants. Graphic AbstractKeywords Sewage sludge compost (SSC) · Maturity · Incubation test (GS 21 ) · Respiration index (AT 4 ) · Biogas potential · Heavy metals * Marta Bożym

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“…However, it might cause eutrophication in lakes and ponds, thereby destroying the ecosystem [14]. In recent years, attention for biochar has increased because of its absorption abilities [15,16]. Manure-derived biochar increased the maximum uptake of nitrogen (N), phosphorus (P) and potassium (K) by ryegrass by 66.4%, 161% and 210%, respectively [17].…”

Section: Introductionmentioning

confidence: 99%

Optimum Method Uploaded Nutrient Solution for Blended Biochar Pellet with Application of Nutrient Releasing Model as Slow Release Fertilizer

2019

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The nutrient releasing characteristics of a blended biochar pellet comprising a mixture of biochar and pig manure compost ratio (4:6) uploaded with nitrogen (N), phosphorus (P) and potassium (K) nutrient solutions were investigated with the application of a modified Hyperbola model during a 77-day precipitation period. The experiment consisted of five treatments, i.e., the control, as 100% pig manure compost pellet (PMCP), a urea solution made at room temperature (TN), a urea solution heated to 60 °C (HTN), N, P and K solutions made at room temperature (TNPK), and N, P and K solutions heated to 60 °C (HTNPK). The cumulative ammonium nitrogen (NH4-N) in the blended biochar pellets was slow released over the 77 days of precipitation period, but nitrite nitrogen (NO3-N) was rapidly released, i.e., within 15 days of precipitation (Phase I), close behind on a slower release rate within the final precipitation (Phase II). Accumulated phosphate phosphorus (PO4-P) concentrations were not much different, and slowly released until the final precipitation period, while the highest accumulated K amount was 2493.8 mg L−1 in the TNPK at 8 days, which then remained at a stage state of K. Accumulated silicon dioxide (SiO2) concentrations abruptly increased until 20 days of precipitation, regardless of treatments. For the application of the releasing model for nutrient releasing characteristics, the estimations of accumulated NH4-N, NO3-N, PO4-P, K and SiO2 in all the treatments were significantly (p < 0.01) fitted with a modified Hyperbola model. These findings indicate that blended biochar pellets can be used as a slow release fertilizer for agricultural practices.

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Effect of biochar amendment on greenhouse gas emission and bio-availability of heavy metals during sewage sludge co-composting

Cited by 151 publications

References 31 publications

Insight into the cadmium and zinc binding potential of humic acids derived from composts by EEM spectra combined with PARAFAC analysis

Insight into the cadmium and zinc binding potential of humic acids derived from composts by EEM spectra combined with PARAFAC analysis

Assessment of Composition Changes, Stability Degree and the Potential of Biogas Formation of Sewage Sludge Composts During Maturation Process

Optimum Method Uploaded Nutrient Solution for Blended Biochar Pellet with Application of Nutrient Releasing Model as Slow Release Fertilizer

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