Impact of biochar application on gas emissions from liquid pig manure storage

Liu, Meiling; Liu, Chunjing; Liao, Wenhua; Xie, Jun; Zhang, Xinxing; Gao, Zhiling

doi:10.1016/j.scitotenv.2021.145454

Cited by 13 publications

(4 citation statements)

References 56 publications

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“…Through a redundancy analysis, we found pH was a main contributor (accounting for 14.3%) to NH 3 emission (Fig 7). As Liu et al [6] reported that the increase of AV induced by biochar might be caused by the…”

Section: Nh 3 Emissions Response To Straw Incorporation and Biochar A...mentioning

confidence: 99%

“…It has been estimated that agriculture contributes 80%−90% of the total NH 3 emitted in many countries, and globally, NH 3 emissions increased by 128% over the last four decades [5]. Additionally, indirect greenhouse gas (GHG) emissions induced by NH 3 losses have been found to be up to 5%−12% [6]. Recently tackling the trade-off between N 2 O and NH 3 emissions has been a hot-spot [7], and agricultural soil is increasingly being scrutinized for its contribution to air quality degradation [8].…”

Section: Introductionmentioning

confidence: 99%

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Co-application of straw incorporation and biochar addition stimulated soil N2O and NH3 productions

Zhang,

Liang

et al. 2024

PLoS ONE

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Nitrous oxide (N2O) and ammonia (NH3) volatilization (AV) are the major pathways of nitrogen (N) loss in soil, and recently, N2O and NH3 mitigation has become urgently needed in agricultural systems worldwide. However, the influence of straw incorporation (SI) and biochar addition (BC) on N2O and NH3 emissions are still unclear. To fill this knowledge gap, a soil column experiment was conducted with two management strategies using straw ‐ straw incorporation (S1) and straw removal (S0) ‐ and four biochar application rates (0 (C0), 15 (C1), 30 (C2), and 45 t ha−1 (C3)) to evaluate the impacts of their interactions on N2O and NH3 emissions. The results showed that NO3−−N concentration and pH was the major contributors to affect the N2O and NH3 losses. Without biochar addition, N2O emissions was decreased by 59.6% (P<0.05) but AV was increased by 97.3% (P<0.05) under SI when compared to SR. Biochar was beneficial for N2O mitigation when straw was removed, but increased N2O emission by 39.4%−83.8% when straw was incorporated. Additionally, biochar stimulated AV by 27.9%−60.4% under S0 and 78.6%−170.3% under S1. Consequently, SI was found to significantly interact with BC in terms of affecting N2O (P<0.001) and NH3 (P<0.001) emissions; co-application of SI and BC promoted N2O emissions and offset the mitigation potential by SI or BC alone. The indirect N2O emissions caused by AV, however, might offset the reduction of direct N2O caused by SI or BC, thus leading to an increase in overall N2O emission. This paper recommended that SI combined BC at the amount of 8.2 t ha−1 for maintaining a lower overall N2O emission for future agriculture practices, but the long-term impacts of straw incorporation and biochar addition on the trade-off between N2O and NH3 emissions and reactive N losses should be further examined and assessed.

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Section: Nh 3 Emissions Response To Straw Incorporation and Biochar A...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Co-application of straw incorporation and biochar addition stimulated soil N2O and NH3 productions

Zhang,

Liang

et al. 2024

PLoS ONE

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“…In situ diffuse reflectance Fourier transform infrared spectroscopy (In-situ DRIFTS) system, including Nicolet iS50 Vertical leaf infrared spectrometer, MCT detector (Negoli, USA), Harrick in situ diffuse reflection accessory (ZnSe window sheet), and selfmade gas circuit control system was used to detect the changes of surface functional groups during the adsorption process of biochar for NH3 and toluene. The pH of biochar was measured by SevenDirect SD20 HA Kit (Mettler Toledo, USA) following the guidance from the previous literature (Liu et al 2021).…”

Section: Biochar Characterizationmentioning

confidence: 99%

Competitive interactions of NH3 and toluene with biochar modified by pre- and post-treatments of H3PO4 in dual adsorption systems

Huang

et al. 2023

BioRes

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Biochar modified by H3PO4 treatment can be used to purify malodorous gases during bio-drying of sludge, but the current understanding of multi-component adsorption of malodorous gases through biochar is limited. This study examined the adsorption mechanism of mixed malodorous gases including toluene and ammonia (NH3) on two kinds of biochar modified via H3PO4 pretreatment before and after pyrolysis. The biochar obtained by H3PO4 pretreatment of biomass before pyrolysis (C550) preferred to adsorb NH3 whether in the single or the dual system. In contrast, the biochar obtained by H3PO4 reprocessing after pyrolysis of biomass (C350-550) tended to adsorb toluene in the dual system but was more efficient in absorbing NH3 in the single system. The pseudo-second-order kinetic model indicated the synergistic adsorption between NH3 and toluene for all biochar samples. In-situ DRIFTS of C350-550 during adsorption demonstrated the formation of amino functional groups caused by NH3 chemical adsorption with -OH (or -COOH) in the dual system. These increases in basic groups on C350-550 could enhance the surface zero potential point of C350-550, thereby improving the non-polarity of C350-550 and benefit the adsorption of weak polar toluene.

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“…Table 1 contains some additives of a different nature that have been tested to promote sorption [31], coagulation [32], and precipitation processes [33][34][35][36]. The current trend is to include the biochar as sorptive agent and to restore the soil as a natural C sink and to minimize the emissions of GHGs [37][38][39]. However, the processes involving the production of activated carbon-like materials are expensive, whilst wood ashes are produced in larger amounts with a significant share of black carbon (BC) [40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Circularity of Bioenergy Residues: Acidification of Anaerobic Digestate Prior to Addition of Wood Ash

et al. 2022

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The present study investigated the acidification treatment of an agrowaste digestate and a food waste digestate, which is necessary before the addition of the wood ashes to attain the pH of zero point of charge in the blend intended to behave as a slow-release fertilizer. The 336-h acidification treatments of the 2.39 ± 0.35 g of digestates were performed with high and low doses of four commercial acids (sulfuric, hydrochloric, nitric, and lactic acids) in 50-mL capped Corning® tubes. For analytical purposes, after the incubation, ultrapure milli-Q® water was added at a rate of 10 mL for each gram of digestate to create a water-soluble phase that allowed the measurement of the pH and the electric conductivity. The results showed that the optimum dose and type of acid were very dependent on the nature of the anaerobic digestate. The maximum buffer capacity of the agrowaste digestate was 0.07 mmol H+-H2SO4/g, but this increased by adding the food waste digestate with a greater content of ammoniacal nitrogen. The agrowaste digestate with a greater content of undigested fiber was more easily oxidized by nitric acid. On the other hand, sulfuric acid oxidized the food waste digestate to a greater extent than the other acids did. Since a high dose of acid was required to achieve a greater efficiency in the solid–liquid separation, which would ease any subsequent handling of the digestates, hydrochloric acid was considered to be the most suitable acid. Lactic acid promoted the growth of filamentous microbes in the agrowaste digestate and microbial colonies in the food waste digestate, which is an indication of the poor preservation of the organic matter under these conditions.

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Impact of biochar application on gas emissions from liquid pig manure storage

Cited by 13 publications

References 56 publications

Co-application of straw incorporation and biochar addition stimulated soil N2O and NH3 productions

Co-application of straw incorporation and biochar addition stimulated soil N2O and NH3 productions

Competitive interactions of NH3 and toluene with biochar modified by pre- and post-treatments of H3PO4 in dual adsorption systems

Circularity of Bioenergy Residues: Acidification of Anaerobic Digestate Prior to Addition of Wood Ash

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