Influence of biochar produced from different pyrolysis temperature on nutrient retention and leaching

Cheng, Hongguang; Jones, Davey L.; Hill, Paul W.; Bastami, Mohd Saufi B.; Tu, Cheng Iong

doi:10.1080/03650340.2017.1384545

Cited by 61 publications

(33 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result is consistent with the results of many studies, which demonstrated that biochars can diminish the EC of salt-affected soils Lashari et al, 2013;Lashari et al, 2015;Yue, Guo, Lin, Li, & Zhao, 2016). Yue et al (2016) revealed that biochar-amended columns discharged the drainage water earlier than did the control without biochar. They concluded that reduction of soil EC was attributed to the improvement of soil porosity and hydraulic conductivity, which accelerate leaching of soluble salts.…”

Section: Soil Ph Ec and Sar After The Leaching Processsupporting

confidence: 92%

Rehabilitation of calcareous saline‐sodic soil by means of biochars and acidified biochars

et al. 2018

View full text Add to dashboard Cite

Saline‐sodic soils comprise a large area worldwide, and these areas are increasing annually; therefore, reclamation of these soils is necessary. The present study investigated the effects of adding various biochars and acidified biochars on selected characteristics of saline‐sodic soil and rehabilitation of this soil. The biochars were produced from rice straw (RSB) and dicer wood chips (DWCB) at 300°C. The acidified biochars were prepared by adding HCl to the biochars. The biochars and acidified biochars were incorporated to the soil at 0 and 50 g kg−1. Soil columns were prepared and saturated from the bottom, and then the flow was reversed by keeping a 5‐cm constant head of leaching water on top of the columns. The leachates were taken at every one‐third interval of the pore volume fraction. Then, the concentrations of cations and anions, pH, and electrical conductivity (EC) of the collected leachates were determined. At the end of the leaching process, the soil in the column was analyzed for the same parameters as the leachates. The results indicated that the application of the biochars and acidified biochars reduced the soil EC and sodium adsorption ratio. The biochars, especially the RSB, which contains a high amount of Ca2+ and Mg2+, were able to remediate the saline‐sodic soil. The Ca2+ and Mg2+ in the biochar can exchange the Na+ on the surface of the soil colloids and, therefore, enhance the Na+ leaching from the saline‐sodic soil. Acidified biochar induced CaCO3 dissolution, which will add Ca2+ and H+ ions to soil solution. The Ca2+ and H+ ions in the soil solution replace the Na+ from the soil colloid surfaces and facilitate the leaching of Na+ from the saline‐sodic soil. From the results, it can be concluded that RSB, acidified RSB, and acidified DWCB were feasible to ameliorate calcareous saline‐sodic soil.

show abstract

Section: Soil Ph Ec and Sar After The Leaching Processsupporting

confidence: 92%

Rehabilitation of calcareous saline‐sodic soil by means of biochars and acidified biochars

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Also, as discussed earlier, when pyrolysis temperature of biochar increases, proportion of recalcitrant C or aromatic C of biochar generally increases, thereby reducing the proportion of labile C (easily degradable C) that can be used by microorganisms. However, Cheng et al (2018) found that increasing pyrolysis temperatures (250, 350, 450, and 550°C) of wheat ( Triticum aestivum L.) straw biochar reduced both cation exchange capacity and nitrate leaching but increased available P on a sandy loam soil. The above few studies suggest that increasing pyrolysis temperatures can increase available P but may have inconsistent effects on nitrate leaching, warranting further research to discern how biochar pyrolysis temperatures affect nitrate leaching.…”

Section: Biochar Amendment and Nutrient Leaching From Soilmentioning

confidence: 99%

“…While sorption of nutrients is needed for the reduction in nutrient leaching, biochar materials that adsorb surplus nitrates yet maintain optimum levels of N available to plants should be developed. The large differences in biochar properties including pH, C and N concentration, cation exchange capacity, specific surface area, and other properties among biochar materials can determine the strength of sorption of nitrates and other chemicals (Ding et al, 2017; Cheng et al, 2018). In the soil, sorption of nitrates on biochar and release of nitrates from biochar occur at the same time.…”

Section: Biochar Amendment and Nutrient Leaching From Soilmentioning

confidence: 99%

“…All biochars contain some amount of water soluble C, but the amount can vary with biochar pyrolysis temperature and biochar age, among other reasons. Cheng et al (2018) found that as pyrolysis temperature increased, leaching of dissolved C increased. In addition, fresh biochar can, in general, release large amounts of dissolved C, but such release can decrease with time after application (Mukherjee and Zimmerman, 2013).…”

Section: Biochar Amendment and Nutrient Leaching From Soilmentioning

confidence: 99%

See 1 more Smart Citation

Biochar and Water Quality

Blanco‐Canqui¹

2019

J of Env Quality

View full text Add to dashboard Cite

Biochar application is considered to be an emerging strategy to improve soil ecosystem services. However, implications of such application on water quality parameters have not been widely discussed. This paper synthesizes the state‐of‐the‐art research on biochar effects on water erosion, nitrate leaching, and other sources of water pollution. Literature indicates that in general, biochar application reduces runoff by 5 to 50% and soil loss by 11 to 78%, suggesting that it can be effective at reducing water erosion, but the magnitude of erosion reduction is highly variable. Co‐application of biochar with other organic amendments (i.e., animal manure, compost) appears to be more effective at reducing water erosion than biochar alone. A main mechanism by which biochar can reduce water erosion is by improving soil properties (i.e., organic C, hydraulic conductivity, aggregate stability), which affect soil erodibility. This review also indicates that biochar reduces nitrate leaching, in most cases by 2 to 88%, but has mixed effect on phosphate and dissolved C leaching. Additionally, biochar effectively filters urban runoff, adsorbs pollutants, and reduces pesticides losses. Biochar feedstock, pyrolysis temperature, application amount, time after application, and co‐application with other amendments affect biochar impacts on water quality. Biochar erosion and potential reduction in nutrient and pesticide use efficiency due to the strong adsorption are concerns that deserve consideration. Overall, biochar application has the potential to reduce water erosion, nitrate leaching, pesticide losses, and other pollutant losses, but more field‐scale data are needed to better discern the extent to which biochar can improve water quality. Core Ideas Biochar can reduce water erosion, but the magnitude of reduction is variable. Biochar combined with other organic amendments can reduce water erosion more than biochar alone. Biochar can reduce nitrate leaching but has mixed effects on phosphate and dissolved C leaching. Biochar filters urban runoff, adsorbs organic pollutants, and reduces pesticide losses. More field data on the effectiveness of biochar for improving water quality are needed.

show abstract

“…Previous studies suggest that the concentrations of phosphorous and potassium as well as the C/N ratio in biochar increases with the increase of pyrolysis temperature . Also, BET surface area, pH, porosity and CEC also increase with increase in the pyrolysis temperature . Therefore, it can be conveniently stated that the biochar produced at high pyrolysis temperature (e.g., above 700°C) will have high nutrient value as well as high market price.…”

Section: Introductionmentioning

confidence: 99%

Transformation of biosolids to biochar: A case study

Patel

Kundu

Paz‐Ferreiro

et al. 2018

Env Prog and Sustain Energy

View full text Add to dashboard Cite

This case study examines the feasibility of the production of biochar from biosolids using energy neutral pyrolysis process using ASPEN Plus process modeling followed by a detailed techno‐economic assessment. The modeling exercise demonstrated that the pyrolysis can be energy neutral with moisture content in biosolids as high as 50 wt.%. In the case of moisture content lower than 50%, surplus energy will be available which can be converted to electrical energy; generating additional revenue. Further analysis on the effect of pyrolysis temperature on surplus energy available revealed that surplus energy increased when pyrolysis temperature reached from 450 to 650°C, but it gradually decreased above 650°C. The techno‐economics analysis suggested that biosolids management cost and biochar sale price were the most critical sensitivity factors while capital and operating costs of the pyrolysis unit seemed to be less critical. The positive Net Present Value values in scenario modeling suggest that the conversion of biosolids to biochar using energy neutral pyrolysis process looks promising and is techno‐economically feasible for most of the studied scenarios. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13113, 2019

show abstract

Influence of biochar produced from different pyrolysis temperature on nutrient retention and leaching

Cited by 61 publications

References 38 publications

Rehabilitation of calcareous saline‐sodic soil by means of biochars and acidified biochars

Rehabilitation of calcareous saline‐sodic soil by means of biochars and acidified biochars

Biochar and Water Quality

Transformation of biosolids to biochar: A case study

Contact Info

Product

Resources

About