Greenhouse gas emission from the total process of swine manure composting and land application of compost

Zhong, Jia; Wei, Yuansong; HeFeng, Wan; Wu, Yulong; Zheng, Jeffrey; Han, Shijie; Zheng, Baodong

doi:10.1016/j.atmosenv.2013.08.048

Cited by 58 publications

(28 citation statements)

References 24 publications

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“…Volatile solid (VS) content was obtained by determining the loss of mass after ignition at 600°C for 5 h. Aqueous sludge extracts obtained by shaking the samples with Milli-Q water at a ratio of 1:10 (w/v) for 1 h were used to determine pH. C/N ratios were measured by Elemental Analyzer (Vario EL III, Elementar Analysensysteme GmbH, Germany) with reference material of sulfonamides (Zhong et al 2013 The filtrates were used to determine DOC by a total organic carbon (TOC) analyzer (Shimadzu TOC-5000, Japan). Meanwhile, the filtrates were diluted in the same time and used for EEM analysis of dissolved organic matter (DOM) as described previously .…”

Section: Sampling and Chemical Analysismentioning

confidence: 99%

Influence of natural zeolite and nitrification inhibitor on organics degradation and nitrogen transformation during sludge composting

Zhang

Sui

et al. 2015

Environ Sci Pollut Res

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Sludge composting is one of the most widely used treatments for sewage sludge resource utilization. Natural zeolite and nitrification inhibitor (NI) are widely used during composting and land application for nitrogen conservation, respectively. Three composting reactors (A-the control, B-natural zeolite addition, and C-3,4-dimethylpyrazole phosphate (DMPP) addition) were established to investigate the influence of NI and natural zeolite addition on organics degradation and nitrogen transformation during sludge composting conducted at the lab scale. The results showed that, in comparison with the control, natural zeolite addition accelerated organics degradation and the maturity of sludge compost was higher, while the DMPP addition slowed down the degradation of organic matters. Meanwhile, the nitrogen transformation functional genes including those responses for nitrification (amoA and nxrA) and denitrification (narG, nirS, nirK, and nosZ) were quantified through quantitative PCR (qPCR) to investigate the effects of natural zeolites and DMPP addition on nitrogen transformation. Although no significant difference in the abundance of nitrogen transformation functional genes was observed between treatments, addition of both natural zeolite and DMPP increases the final total nitrogen content by 48.6 % and 23.1 %, respectively. The ability of natural zeolite for nitrogen conservation was due to the absorption of NH 3 by compost, and nitrogen conservation by DMPP was achieved by the source reduction of denitrification. Besides, it was assumed that the addition of natural zeolite and DMPP may affect the activity of these genes instead of the abundance.

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Section: Sampling and Chemical Analysismentioning

confidence: 99%

Influence of natural zeolite and nitrification inhibitor on organics degradation and nitrogen transformation during sludge composting

Zhang

Sui

et al. 2015

Environ Sci Pollut Res

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“…Nonetheless, soil amendment with composted organic residues in no-tillage system is generally reported to substantially increase soil organic C stocks by offsetting soil CO 2 -C emissions (Gulde et al, 2008;Lal, 2009;Nicoloso, 2009;Powlson et al, 2012). Anaerobic digestion and composting could also offset CH 4 emission in relation to conventional swine slurry management and storage (Kunz et al, 2009;Zhong et al, 2013) and mitigate soil N 2 O emission in relation to other organic residues (Zhong et al, 2013).…”

Section: Introductionmentioning

confidence: 97%

Short-term carbon dioxide emission under contrasting soil disturbance levels and organic amendments

Grave

Nicoloso²,

Cassol

et al. 2015

Soil and Tillage Research

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A B S T R A C TAgriculture can be either a source or sink of atmospheric CO 2 depending on soil management. The application of swine slurry in conventional tilled soils could enhance soil CO 2 emission depleting soil organic C stocks. However, the use of recalcitrant C-rich organic fertilizers in no-till soils can offset soil CO 2 emission promoting soil C sequestration. This hypothesis was tested by evaluating short-term CO 2 -C emissions from a Rhodic Nitisol under contrasting soil disturbance levels (disturbed (DS) and undisturbed soil (US)) top-dressed with mineral or organic fertilizers (urea (UR), raw swine slurry (RS), anaerobically digested swine slurry (ADS), and composted swine slurry (CS)). Soil CO 2 emission was evaluated for 64 days using static chambers where gas samples were collected and analysed by photoacoustic infrared spectroscopy. Soil water-filled pore space (WFPS), temperature and meteorological data were concomitantly registered and a first-order exponential decay model was used to assess the decomposition of organic fertilizers and CO 2 emissions induced by soil disturbance. Soil CO 2 -C emission was correlated with soil temperature, while limiting soil aeration impaired CO 2 -C efflux when WFPS >0.6 cm 3 cm À3 . Disturbance increased soil CO 2 -C efflux (36.3 AE 2.2 kg CO 2 -C ha À1 day À1 ) in relation to US (33.3 AE 1.6 kg CO 2 -C ha À1 day À1 ). Extra labile C input through RS amendment induced an increased soil CO 2 -C efflux for a longer period (t 1/2 = 16.9 and 9.6 days in DS and US treatments, respectively), resulting in higher CO 2 -C emissions than soil amended with other fertilizers. The recalcitrant C input by ADS and CS had limited effect on soil CO 2 -C emissions. CS presented a genuine potential for substantial soil organic C accumulation while offsetting increased CO 2 -C emissions in comparison to RS amended soils.

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“…The supernatant was filtered through a 0.45 mm membrane filter. The methane content in biogas was analyzed by a gas chromatograph (Aglilent 4980, USA) equipped with a flame ionization detector as described by Zhong et al (2013). SEM analysis was conducted as previously described with some modifications (Fang and Chui, 1993).…”

Section: Analysis Methodsmentioning

confidence: 99%

Rheological properties of sewage sludge during enhanced anaerobic digestion with microwave-H2O2 pretreatment

et al. 2016

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a b s t r a c tThe rheological behavior of sludge is of serious concern in anaerobic digestion. This study investigated the rheological properties of sewage sludge during enhanced anaerobic digestion with microwave-H 2 O 2 pretreatment (MW-H 2 O 2 ). The results showed that MW-H 2 O 2 pretreatment resulted in the improvement of sludge flowability and weakening of its viscoelastic properties. Further positive effects on the rheological properties of digested sludge during anaerobic digestion were observed. The flowability was improved with a low level of apparent viscosity. The decrease of the consistency index and increase of the flow behavior index indicated that the strength of the inner structures and non-Newtonian flow characteristics of digested sludge weakened. Both the storage modulus (G 0 ) and loss modulus (G 00 ) decreased, indicating that the viscoelastic behavior became weak. These effects were possibly attributed to the changes of the digested sludge micro-structures, such as extracellular polymeric substances (EPS). This study concluded that anaerobic digestion for treating sewage sludge combined with pretreatment is a more favorable option than single anaerobic digestion from the perspective of rheology.

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Greenhouse gas emission from the total process of swine manure composting and land application of compost

Cited by 58 publications

References 24 publications

Influence of natural zeolite and nitrification inhibitor on organics degradation and nitrogen transformation during sludge composting

Influence of natural zeolite and nitrification inhibitor on organics degradation and nitrogen transformation during sludge composting

Short-term carbon dioxide emission under contrasting soil disturbance levels and organic amendments

Rheological properties of sewage sludge during enhanced anaerobic digestion with microwave-H2O2 pretreatment

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