Transformation of dissolved organic matters in swine, cow and chicken manures during composting

Wang, Ke; Li, Xiangkun; He, Chao; Chen, Chia-Lung; Bai, Jianwei; Ren, Nanqi; Wang, Jing‐Yuan

doi:10.1016/j.biortech.2014.03.129

Cited by 106 publications

(37 citation statements)

References 27 publications

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“…Molecular size In agreement with Wang et al (2014), the molecular size distribution of WEOMs ranged between 1000 and 10,000 Da. The sample AN shows (Table 2) the lower average molecular size (M n ) and molecular weight (M w ), while the highest was observed for AE sample.…”

Section: Resultssupporting

confidence: 57%

Relationships between stability, maturity, water-extractable organic matter of municipal sewage sludge composts and soil functionality

Sciubba

Cavani

Grigatti

et al. 2015

Environ Sci Pollut Res

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Compost capability of restoring or enhancing soil quality depends on several parameters, such as soil characteristics, compost carbon, nitrogen and other nutrient content, heavy metal occurrence, stability and maturity. This study investigated the possibility of relating compost stability and maturity to water-extractable organic matter (WEOM) properties and amendment effect on soil quality. Three composts from municipal sewage sludge and rice husk (AN, from anaerobic wastewater treatment plants; AE, from aerobic ones; MIX, from both anaerobic and aerobic ones) have been analysed and compared to a traditional green waste compost (GM, from green manure, solid waste and urban sewage sludge). To this aim, WEOMs were characterized through chemical analysis; furthermore, compost stability was evaluated through oxygen uptake rate calculation and maturity was estimated through germination index determination, whereas compost impact on soil fertility was studied, in a lab-scale experiment, through indicators as inorganic nitrogen release, soil microbial biomass carbon, basal respiration rate and fluorescein di-acetate hydrolysis. The obtained results indicated that WEOM characterization could be useful to investigate compost stability (which is related to protein and phenol concentrations) and maturity (related to nitrate/ammonium ratio and degree of aromaticity) and then compost impact on soil functionality. Indeed, compost stability resulted inversely related to soil microbial biomass, basal respiration rate and fluorescein di-acetate hydrolysis when the products were applied to the soil.

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Section: Resultssupporting

confidence: 57%

Relationships between stability, maturity, water-extractable organic matter of municipal sewage sludge composts and soil functionality

Sciubba

Cavani

Grigatti

et al. 2015

Environ Sci Pollut Res

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show abstract

“…As for the different treatments of sludge composting, the fluorescent intensity of EEM spectra all moved from regions I, II, and IV to the III and V. These profiles were usually observed for composting (Wang et al 2014;Straathof and Comans 2015), and the enhancement of the regions III and V was generally considered as the maturity of the compost. Although the final fluorescent intensity of EEM spectra (day 183) was concentrated at regions III and V for all treatments, the intensity of reactor B was obviously higher than others (Fig.…”

Section: Organics Degradationmentioning

confidence: 86%

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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“…They also help to maintain the pH 6-8 (Sánchez-Monedero et al 2001). Typically used bulking agents for composting process are saw dust and dry leaves (Varma and Kalamdhad 2014b), newspaper (Ball et al 2000), Wheat bran (Wang et al 2012), Pumice (Wang et al 2014;Wu et al 2015) and wood shaving (Adhikari et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Evolution of chemical and biological characterization during agitated pile composting of flower waste

Sharma

Varma

Yadav

et al. 2017

Int J Recycl Org Waste Agricult

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Purpose Flower waste dumping in landfills and other disposal sites is causing major environmental issues due to its highly biodegradable nature. Instead, flower waste can be successfully composted for its higher nutrient value. Therefore, this study evaluated the pile composting of flower waste with different combinations of cow dung and saw dust to produce stabilized compost. Methods Five agitated piles of flower waste mixture were formed in trapezoidal shape to perform the composting. Pile (P 0 ) was a control experiment, which contained 100 kg flower waste. The quantity of flower waste mixture with cow dung and saw dust in the other Piles was a total of 100 kg i.e. P 1 (50:40:10) kg, P 2 (60:30:10) kg, P 3 (70:20:10) kg and P 4 (80:10:10) kg, respectively. Results Temperature above 50°C was observed in all the piles except in P 0 . Physico-chemical characteristics of compost showed a stabilized compost obtained by proportionate mix of flower waste, cow dung and saw dust. Pile P 2 was observed with pH 7.23 and electrical conductivity 3.98 mS cm -1 , total organic carbon 30.9%, total nitrogen 2.31% and C:N ratio 14, thus a good proportion for compost amongst all the piles. Conclusions Appropriate proportion of waste mixture played an important role in providing favorable conditions for the microbial transformation of flower waste to stabilized compost. Temperature influenced the growth of microbes and maximum temperature was helpful in fast degradation of organic matter. Finally, flower waste with a combination of cow dung and saw dust was found to be successful during pile composting.

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Transformation of dissolved organic matters in swine, cow and chicken manures during composting

Cited by 106 publications

References 27 publications

Relationships between stability, maturity, water-extractable organic matter of municipal sewage sludge composts and soil functionality

Relationships between stability, maturity, water-extractable organic matter of municipal sewage sludge composts and soil functionality

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

Evolution of chemical and biological characterization during agitated pile composting of flower waste

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