Effects of aeration method and aeration rate on greenhouse gas emissions during composting of pig feces in pilot scale

Jiang, Tao; Li, Guoxue; Tang, Qiong; Ma, Xiao; Wang, Gang; Schuchardt, Frank

doi:10.1016/j.jes.2014.12.005

Cited by 130 publications

(56 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CÁCERES et al (2006) report shorter composting times for turned windrows when compared to static piles, using cattle manure. On the other hand, the larger the aeration, the greater the nitrogen losses by volatilization (JIANG et al, 2015b). However, turnings of twice a week in the first month, homogenize the material, increase the initial velocity of degradation, control the temperature in the phase of high peaks and promote the lower losses of N, as shown in CARNEIRO et al (2013).…”

Section: Composting Timementioning

confidence: 99%

“…Agríc., Jaboticabal, v.36, n.6, p.1206Jaboticabal, v.36, n.6, p. -1217Jaboticabal, v.36, n.6, p. , nov./dez. 2016 1207 the exhalation of undesirable odors and nutrients leaching (JIANG et al, 2015b;CARNEIRO et al, 2013). On the other hand, the lack of water decreases the biological activity (KIEHL, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The micro-organisms inoculation in composting can accelerate the process (JIANG et al, 2015b). However, the micro-organisms should be selected depending on the temperature and the waste (VARGAS-GARCIA et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Composting Time Reduction of Agro-Industrial Wastes

et al. 2016

View full text Add to dashboard Cite

ABSTRACT:The agro-industrialization of animal products has led to a significant waste generation, which has been stabilized by composting process in specialized plants. Waste stabilization time on composting depends on the handling used. 12 treatments were performed, three frequency turnings combined with two environmental conditions (with and without coverage of the composting area) and with and without commercial inoculant, whose results were submitted to multiple regression analysis. Windrows turned twice a week in the first month had adequate temperature control and stabilization time of 83.5 and 95.5 days for uncovered and covered windrows, respectively. Uncovered windrows have accelerated the process in 10 days on average, with the disadvantage of increasing nutrient losses. The weekly inoculation of Bacillus (subtilis, licheniformis and polymyxa) and Yarrowia lipolytica had no significant effect (p≥0.05).

show abstract

Section: Composting Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Composting Time Reduction of Agro-Industrial Wastes

et al. 2016

View full text Add to dashboard Cite

show abstract

“…2C). Microbial consumption of protein and other substances in kitchen waste, which involved hydrolysis of ammonium to NH 3 , resulted in an increase in the NH 3 concentration 22, 39. Following the peak, the NH 3 emission decreased and then gradually stabilized in all groups (Fig.…”

Section: Resultsmentioning

confidence: 94%

Development of a novel compound microbial agent for degradation of kitchen waste

Zhao

Zhang

et al. 2017

Brazilian Journal of Microbiology

View full text Add to dashboard Cite

Large quantities of kitchen waste are produced in modern society and its disposal poses serious environmental and social problems. The aim of this study was to isolate degradative strains from kitchen waste and to develop a novel and effective microbial agent. One hundred and four strains were isolated from kitchen waste and the 84 dominant strains were used to inoculate protein-, starch-, fat- and cellulose-containing media for detecting their degradability. Twelve dominant strains of various species with high degradability (eight bacteria, one actinomycetes and three fungi) were selected to develop a compound microbial agent “YH” and five strains of these species including H7 (Brevibacterium epidermidis), A3 (Paenibacillus polymyxa), E3 (Aspergillus japonicus), F9 (Aspergillus versicolor) and A5 (Penicillium digitatum), were new for kitchen waste degradation. YH was compared with three commercial microbial agents—“Tiangeng” (TG), “Yilezai” (YLZ) and Effective Microorganisms (EM), by their effects on reduction, maturity and deodorization. The results showed that YH exerted the greatest efficacy on mass loss which decreased about 65.87% after 14 days. The agent inhibited NH3 and H2S emissions significantly during composting process. The concentration of NH3 decreased from 7.1 to 3.2 ppm and that of H2S reduced from 0.7 to 0.2 ppm. Moreover, E4/E6 (Extinction value460nm/Extinction value665nm) of YH decreased from 2.51 to 1.31, which meant YH had an obvious maturity effect. These results highlighted the potential application of YH in composting kitchen waste.

show abstract

“…The emission of ammonia has been reported to be from 21% to 77% of the initial total nitrogen during composting of different bio-wastes (Martins and Dewes, 1992;Eghball et al, 1997). Ammonia volatilization is mainly affected by raw material properties and other factors including pH, carbon/nitrogen ratio (C/N), carbon sources, moisture content, aeration rate and temperature (Li et al, 2013;Jiang et al, 2015). Several researchers have tried to increase C/N ratio, control composting temperature or lower pH value to reduce ammonia emission, because when initial C/N is low, the excess amount of nitrogen will easily volatilize as ammonia at pH > 7.5 and high temperature (Pagans et al, 2006;Zhu, 2007).…”

Section: Introductionmentioning

confidence: 99%