Combining biochar, zeolite and wood vinegar for composting of pig manure: The effect on greenhouse gas emission and nitrogen conservation

Wang, Quan; Awasthi, Mukesh Kumar; Ren, Xiuna; Zhao, Junchao; Li, Ronghua; Wang, Zhen; Wang, Meijing; Chen, Hongyu; Zhang, Zengqiang

doi:10.1016/j.wasman.2018.01.015

Cited by 210 publications

(67 citation statements)

References 41 publications

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“…Biochar decreased the CO 2 emissions in 50% (expressed in % of applied C) whereas clinoptilolite appears had no effect on these losses (Table 3). In agreement with our results, previous studies reported that CO 2 emission from animal manure was reduced by 34-63% by adding biochar (10% w/w) [28,32] whereas the application of clinoptilolite (2.344 kg m −2 ) appears have no effect on CO 2 emission [19]. Excluding differences among biochar's like feedstock, method and temperature pyrolysis, the reduction of CO 2 emissions by adding biochar could be related with either sorption of onto the biochar or a reduction in the labile C availability [23,28].…”

Section: Carbon Emissionssupporting

confidence: 93%

“…In addition, no further reduction in N 2 O emissions was observed by combining the two additives. Excluding differences on rates and composition of additives, the results of this study are lower than previous studies, where Brennan et al [28] reported that cattle slurry amended with pinewood biochar (12% v/v) reduced N 2 O loss by 63% and Pereira et al [19] referred that poultry manure amended with clinoptilolite (2.344 kg m −2 ) reduced N 2 O loss by 34% and Wang et al [32] found that pig manure amended with biochar (10% w/w) mixed with clinoptilolite reduced N 2 O loss in about 80%. The N (NH 3 + N 2 O) emissions, expressed as g m −2 or as % of applied N, were not significantly different (p > 0.05) among amended treatments, being significantly lower (p < 0.05) in about 21% than in treatment Control ( Table 3).…”

Section: Nitrogen Emissionscontrasting

confidence: 80%

“…Biochar reduced the CH 4 emission by 55% while clinoptilolite seems had no effect on such loss (Table 3). Previous studies [32,35,36] reported that the emission of CH 4 from animal manures could be reduced by 50-95% by adding biochar and clinoptilolite alone or in combination (5-10% w/w of each additive), this being explained by the adsorption ability of the additives. However, in this study, the addition of clinoptilolite to pig slurry did not cause an increase or a reduction in CH 4 emissions because the experiment has been done on the liquid fraction of the slurry.…”

Section: Carbon Emissionsmentioning

confidence: 96%

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Effects of Biochar and Clinoptilolite on Composition and Gaseous Emissions during the Storage of Separated Liquid Fraction of Pig Slurry

et al. 2020

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The storage of animal manure is a major source of gaseous emissions. The aim of this study was to evaluate the effects of biochar and clinoptilolite on the composition and gaseous emissions during the storage of separated liquid fraction of pig slurry. The experiment was carried out using containers with 6 L of pig slurry each. The additives biochar and clinoptilolite were added alone and mixed to the pig slurry at a rate of 2.5% each, in a total of four treatments with three replicates including the control. Gaseous emissions were monitored by a photoacoustic multigas monitor, and slurry samples were collected at 0 and 85 days and their composition assessed. Results showed that the addition of biochar could modify the physicochemical properties of the slurry. The addition of biochar did not reduce the E. coli during the experiment while clinoptilolite decreased its prevalence. The addition of biochar or clinoptilolite reduced significantly the NH3 emission during the storage of slurry, but no advantages were gained with their combination. The addition of biochar significantly reduced the CO2 and CH4 emissions relative to clinoptilolite, however N2O emissions and global warming potential did not differ among the additives. We conclude that the biochar and clinoptilolite are recommended as a mitigation measure to reduce gaseous emissions and preserve the fertiliser value at slurry storage.

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Section: Carbon Emissionssupporting

confidence: 93%

Section: Nitrogen Emissionscontrasting

confidence: 80%

Section: Carbon Emissionsmentioning

confidence: 96%

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Effects of Biochar and Clinoptilolite on Composition and Gaseous Emissions during the Storage of Separated Liquid Fraction of Pig Slurry

et al. 2020

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“…The present study revealed higher yields of wet and dried BSF larvae from biochar-amended substrates, especially at inclusion levels of 15 and 20%. These findings are in line with those reported by Awash et al [32,52] and Wang et al [30], who demonstrated that improved nitrogen conservation can be achieved through biochar amendment of substrates. Similarly, Lalander et al [1] established that BSF larvae fed on substrates with high nitrogen concentration developed faster and had higher biomass accumulation.…”

Section: Effect Of Biochar and Gypsum Amendments On Black Soldier Flysupporting

confidence: 93%

Biochar and gypsum amendment of agro-industrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer

et al. 2020

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Black soldier fly (BSF) (Hermetia illucens L.) is one of the most efficient bio-waste recyclers. Although, waste substrate amendments with biochar or gypsum during composting process are known to enhance nutrient retention, their impact on agro-industrial waste have not been documented. Hence, this study focuses on a comparative effect of agro-industrial waste amended with biochar and gypsum on BSF larval performance, waste degradation, and nitrogen (N) and potassium retention in frass fertilizer. Brewery spent grain was amended with biochar or gypsum at 0, 5, 10, 15 and 20% to determine the most effective rates of inclusion. Amending feedstock with 20% biochar significantly increased wet (89%) and dried (86%) larval yields than the control (unamended feedstock). However, amendment with 15% gypsum caused decrease in wet (34%) and dried (30%) larval yields but conserved the highest amount of N in frass. Furthermore, the inclusion of 20% biochar recorded the highest frass fertilizer yield and gave a 21% increase in N retention in frass fertilizer, while biomass conversion rate was increased by 195% compared to the control. Feedstock amendment with 5% biochar had the highest waste degradation efficiency. Potassium content in frass fertilizer was also significantly enhanced with biochar amendment. At maturity, frass compost with more than 10% inclusion rate of biochar had the highest cabbage seed germination indices (>100%). The findings of this study revealed that initial composting of biochar amended feedstocks using BSF larvae can significantly shorten compost maturity time to 5 weeks with enhanced nutrient recycling compared to the conventional composting methods.

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“…In the conditions of increasing technogenic and anthropogenic pressure on the environment, the problem of environmentally friendly additives, immunocorrectors and natural minerals in livestock breeding is relevant. Zeolites can be used as well since they have a unique combination of ion exchange, catalytic, adsorption, detoxification, deodorizing, prolonging effects on the animal body [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Correction of physiological, biochemical and productive indicators of farm animals using mineral sorbent

2020

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When feeding 30-180-day old calves with mineral sorbent vodnite, the number of red blood cells increases by 4.17% (p≤0.05), the hemoglobin level increases by 9.4% (p≤0.05), total protein contentby 6.44% (p≤0.01), albumin contentby 4.60% (p≤0.001), the phagocytic activity of leukocytesby 12.42% (p≤0.05), the bactericidal activityby 6.47% (p≤0.05), the lysozyme activity -by 10% (p≤0.05), the average daily weight gain of calvesby 7.4%, the live weightby 7.6% (p≤0.01). In fresh cows fed with vodnite, physical and biochemical characteristic improve and the gross milk yield increases by 45-84 kg (p<0.05). Vodnite used for cattle increases the genetic productivity.

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Combining biochar, zeolite and wood vinegar for composting of pig manure: The effect on greenhouse gas emission and nitrogen conservation

Cited by 210 publications

References 41 publications

Effects of Biochar and Clinoptilolite on Composition and Gaseous Emissions during the Storage of Separated Liquid Fraction of Pig Slurry

Effects of Biochar and Clinoptilolite on Composition and Gaseous Emissions during the Storage of Separated Liquid Fraction of Pig Slurry

Biochar and gypsum amendment of agro-industrial waste for enhanced black soldier fly larval biomass and quality frass fertilizer

Correction of physiological, biochemical and productive indicators of farm animals using mineral sorbent

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