Removal of nitrate-nitrogen from drinking water using bamboo powder charcoal

Mizuta, Kei; Matsumoto, Tsunekazu; Hatate, Yasuo; Nishihara, Keiichi; Наканиши, Томоки

doi:10.1016/j.biortech.2004.02.015

Cited by 392 publications

(166 citation statements)

References 6 publications

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“…Kameyama et al (2012) reported that NO3 -sorption to biochar increased with greater biochar production temperatures, due to the formation of basic functional groups. The findings of this study are consistent with the results of other biochar researches carried out under controlled laboratory-based conditions (Mizuta et al, 2004;Yao et al, 2012;Liang et al, 2014), which observed some nitrate adsorption with some high temperature biochars. They are also in line with the results of a field experiment recently reported by Haider et al (2016).…”

Section: Resultssupporting

confidence: 92%

Effect of biochar amendment on nitrate retention in a silty clay loam soil

et al. 2016

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Biochar incorporation into agricultural soils has been proposed as a strategy to decrease nutrient leaching. The present study was designed to assess the effect of biochar on nitrate retention in a silty clay loam soil. Biochar obtained from the pyrogasification of fir wood chips was applied to soil and tested in a range of laboratory sorption experiments. Four soil treatments were considered: soil only (control), soil with 2, 4 and 8% of biochar by mass. The Freundlich sorption isotherm model was used to fit the adsorbed amount of nitrate in the soil-biochar mixtures. The model performed very well in interpreting the experimental data according to a general linear regression (analysis of co-variance) statistical approach. Nitrate retention in the soilbiochar mixtures was always higher than control, regardless the NO3 -concentration in the range of 0-400 mg L -1 . Different sorption capacities and intensities were detected depending on the biochar application rate. The highest adsorption capacity was observed in the soils added with 2 and 4% of biochar, respectively. From the results obtained is possible to infer that nitrate retention is higher at lower biochar addition rate to soil (2 and 4%) and at lower nitrate concentration in the soil water solution. These preliminary laboratory results suggest that biochar addition to a typical Mediterranean agricultural soil could be an effective management option to mitigate nitrate leaching.

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Section: Resultssupporting

confidence: 92%

Effect of biochar amendment on nitrate retention in a silty clay loam soil

et al. 2016

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“…However, studies have demonstrated that cereals, including wheat, cannot effectively utilise the supplied N and it is estimated that only 40-60 % of N supplied is absorbed by crops (Craswell and Godwin 1984;Hodge et al 2000;Sylvester-Bradley and Kindred 2009). This low uptake of N can affect nitrogen use efficiency (NUE) and lead to high production costs, loss of N from the soil by leaching, contamination of surface and underground water (Mizuta et al 2004), and gaseous emissions such as nitrous oxide, a major greenhouse gas (Harrison and Webb 2001). In addition, the poor use of supplied N may lead to insufficient N availability for plants at times of peak demand with consequent yield reduction.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Australian wheat genotypes for response to variable nitrogen application

Mahjourimajd

Kuchel²,

Langridge

et al. 2015

Plant Soil

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Aims The key aim was to assess the genetic variation for nitrogen (N) response and stability in spring wheat germplasm to determine the scope for improvement of nitrogen use efficiency (NUE) under water-limited, low yielding conditions. A further aim was to evaluate NUE stability and NUE-protein yield (PY) as suitable NUErelated traits for selection. Methods The traits measured included grain yield (GY, kg ha) and NUE (kg GY kg −1 N) under varying N applications at all sites, and NUE for protein yield (NUE-PY), harvest index and plant height at some sites.In addition, two of the trials used two seeding rates to provide an assessment of the impact of plant density on NUE.Results Genetic variation was significant for all traits studied. Grain yield was affected by both genotype (G) and N rate and the interaction between the two. Interestingly, harvest index and height showed no direct response to varying N applications. However, for these traits, there was a significant G effect and N response (G × N interaction).Conclusions Increasing N inputs led to variable responses for GY at different sites. Importantly, genetic variation in N response was detected. The information and screening techniques will enable plant breeders to select wheat genotypes that show a consistent response to high N. There is clear scope to improve NUE in spring wheat grown in low yielding environments.

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“…3). The significant difference in water table level did not, however, enhance N 2 O flux, probably due to the capability of biochar to retain NO 3 - (Mizuta et al 2004, Knowles el al. 2011, Clough et al 2013) and hence inhibit denitrification.…”

Section: Resultsmentioning

confidence: 93%

Biochar can restrict N2O emissions and the risk of nitrogen leaching from an agricultural soil during the freeze-thaw period

Kettunen¹,

Saarnio²

2013

AFSci

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Freeze-thaw (FT) events in soils can cause a burst of nitrous oxide (N 2 O) and enhance N leaching during the springthaw event. We studied whether a soil amended with wood-derived (spruce chips) biochar (10 tonnes ha -1 ), produced at rather low temperatures (400-450°C), could reduce the burst of N 2 O and the risk of N leaching from an agricultural soil after a FT event. A short-term laboratory experiment (4 weeks) was conducted with 24 vegetated (Phleum pratense) mesocosms (12 controls, 12 biochar-treated) that had spent a dormant season in the dark at 15°C for two months after the growing season. N 2 O efflux to the atmosphere and ammonium (NH 4 + -N) and nitrate (NO 3 -N) in the percolated soil water were monitored before and after the FT event. N 2 O was monitored with the dark chamber method and analyzed using a gas chromatograph. We found that soil amended biochar can significantly diminish the burst of N 2 O after the soil FT event (by 61% just after FT event) and substantially reduce the risk of NO 3 -N and NH 4 + -N leaching from the agricultural soil. Compared to the control, the decrement in concentrations of NO 3 -N and NH 4 + -N in water percolated through the biochar amended soil in the mesocosms was 58% and 22%, respectively.

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Removal of nitrate-nitrogen from drinking water using bamboo powder charcoal

Cited by 392 publications

References 6 publications

Effect of biochar amendment on nitrate retention in a silty clay loam soil

Effect of biochar amendment on nitrate retention in a silty clay loam soil

Evaluation of Australian wheat genotypes for response to variable nitrogen application

Biochar can restrict N2O emissions and the risk of nitrogen leaching from an agricultural soil during the freeze-thaw period

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