Evolution of temperature and chemical parameters during composting of the pig slurry solid fraction amended with natural zeolite

Venglovský, J.; Sasáková, N.; Vargová, Mária; Pačajová, Zuzana; Plachá, Iveta; Petrovský, M.; Harichova, D.

doi:10.1016/j.biortech.2004.05.006

Cited by 90 publications

(51 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results are in line with the recommendation of the United States Environment Protection (USEPA) that the temperature of the compost pile should be higher than 40°C and maintained thus for at least 5 days, in order to ensure the elimination of pathogenic microorganisms (USEPA, 1984). This statement is also supported by Venglovsky et al (2005). After the thermophilic stage, temperatures of all treatments rapidly declined until day 15, and then gradually decreased up to the ambient temperature.…”

Section: Effect Of Plant Materials and Sludge Ratio On The Evolution Osupporting

confidence: 74%

Co-composting of sewage sludge and Echinochloa pyramidalis (Lam.) Hitchc. Chase plant material from a constructed wetland system treating domestic wastewater in Cameroon

Wafo¹,

Nguemte²,

Nzouebet³

et al. 2016

Afr. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Trials were conducted at the Cité-Verte domestic wastewater treatment station (Yaoundé-Cameroon) in order to assess the effect of three sewage sludge: Macrophyte ratios on the co-composting process and compost quality. The ratios were T1: 25 kg of plant material (Echinochloa pyramidalis) and 75 kg sludge; T2: 50 kg of plant material and 50 kg sludge, and T3: 75 kg of plant material and 25 kg of sludge. The assessment parameters of the co-composting process included the daily evolution of temperature, the pH and water content for each month. The quality of the mature compost obtained was analysed based on their C/N ratio, Ca, Mg, P, K, trace elements and helminth eggs content. During cocomposting, maximum temperatures ranged from 45.3 ± 4.7°C (T1) to 70.77 ± 2.76°C (T3). Mature cocompost was obtained after 3 months (T1), 4 months (T2) and 5 months (T3). Mean pH and C/N ratio of co-composts respectively ranged from 7.26 to 7.62 and from 10 to 15. In mature compost, the average values of organic matter, N and P respectively were 3323 ± 405 mg/kg, 165 ± 32 mg/kg and 36 ± 5 mg/kg for T1; 2945 ± 128 mg/kg, 152 ± 30 mg/kg and 27 ± 6 mg/kg for T2; and 228 ± 103 mg/kg, 105 ± 48 mg/kg and 7 ± 1 mg/kg for T3. K content was 1 mg/kg in all three co-composts. Heavy metals were found at trace levels. Helminth eggs concentration in compost was 0.2 ± 0.03 egg/g (T1), 0.1 ± 0.02 egg/g (T2) and 0.007 ± 0.01 egg/g (T3). All these co-composts did not present a significant hygienic risk with regards to WHO guidelines (2006) for safe reuse of faecal matter or faecal sewage in agriculture (less than 1 egg/g TS). For a given amount of plant harvested, it was concluded that the quickest way to produce a compost safe of parasites will be to mix them with 3/4 of sludge from the digestion tank.

show abstract

Section: Effect Of Plant Materials and Sludge Ratio On The Evolution Osupporting

confidence: 74%

Co-composting of sewage sludge and Echinochloa pyramidalis (Lam.) Hitchc. Chase plant material from a constructed wetland system treating domestic wastewater in Cameroon

Wafo¹,

Nguemte²,

Nzouebet³

et al. 2016

Afr. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…However, the NH 3 flux of reactor B was significantly lower than that of A and C, and the peak NH 3 flux was 1.87, 1.10, and 1.79 mg m −2 h −1 , respectively. The absorption of NH 3 by natural zeolite was generally observed (Bernal et al 1993;Venglovsky et al 2005;Stylianou et al 2008;Bernal et al 2009). As an effect of the delay of nitrification by NI, reactor C showed higher concentrations of NH 4 + -N (Fig.…”

Section: Organics Degradationmentioning

confidence: 98%

“…The dewatered sewage sludge and the spent mushroom were mixed manually at a ratio of approximate 1:3 (v/v), and then, the mixture was divided equally to the three reactors at about 45 kg each (wet weight). After that, natural zeolites were added at a ratio of 1 % wet weight as previously suggested (Venglovsky et al 2005;Villaseñor et al 2011) to reactor B, and DMPP was added in the form of stock solution (25 %, w/v) to reactor C at a final concentration of 1 % according to the total nitrogen (TN) content as usually used in land application (Yang et al 2013;Maienza et al 2014;Yu et al 2014). Reactor A was treated as the control.…”

Section: Materials and Experimental Designmentioning

confidence: 99%

“…Natural zeolite is a kind of mineral with an open reticular structure which allows the entrapment or release of various cations as a consequence of cation exchange reactions and adsorption (Venglovsky et al 2005). The ability of natural zeolite to the retention of NH 3 during sludge composting has been widely investigated (Bernal et al 1993;Venglovsky et al 2005;Villaseñor et al 2011;Zuokaite and Zigmontiene 2013), and several influences of natural zeolite including increasing sludge porosity (Stylianou et al 2008), affecting both its temperature and moisture (Venglovsky et al 2005) and reducing heavy metals concentrations (Villaseñor et al 2011), have been demonstrated. However, there is still little information on organics degradation during sludge composting after natural zeolite addition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract

“…It is indicates that, microbial activity take place to degrade the organic matter [10]. According to Venglovsky et al [11] it was suggested, that the microbial evaluation actually steadily and maximize around 35 and 40 ºC during the composting process while according to Boulter et al [12], when it reached 40 to 45 ºC, it represent thermophilic phase. During thermophilic phase, the presence of weed seeds and pathogens in the compost are killed, due to hemicellulose and lignins was degraded.…”

Section: Temperaturementioning

confidence: 99%

Evaluation of physical, chemical and heavy metal concentration of food waste composting

Azhari¹,

Jamaludin²

2017

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract:In this study, food waste composting with rice husk and coconut fibre as compost medium were carried out. Two types of different fermentation liquids were prepared which were fermented liquid (banana peel) and fermented liquid from fermented soybeans. During the composting process, a compost samples for a twenty week duration at an interval time of two weeks. Among the physico-chemical parameters that were tested were temperature, moisture content, pH value, Total Nitrogen, Total Phosphorous, Potassium and Total Organic Carbon and Carbon Nitrogen ratio. Heavy metals such as copper, cadmium, lead, nickel and arsenic were observed and analysed. From this study, it was found that, the temperature increased during the thermophilic phase while there was gradually increase of Total Nitrogen, Total Phosphorous and Potassium from the beginning till the end of the composting process. It was also found that the total organic carbon (TOC) and the carbon nitrogen ratio decreased significantly during the decomposition process. Traces amounts of heavy metals were also detected and remains below the standard Malaysian Environmental regulations. It was concluded that, the composting process was faster with processed food waste followed by combination of processed food waste and raw. Raw food waste were demonstrated the lowest degradation rate.

show abstract

Evolution of temperature and chemical parameters during composting of the pig slurry solid fraction amended with natural zeolite

Cited by 90 publications

References 24 publications

Co-composting of sewage sludge and Echinochloa pyramidalis (Lam.) Hitchc. Chase plant material from a constructed wetland system treating domestic wastewater in Cameroon

Co-composting of sewage sludge and Echinochloa pyramidalis (Lam.) Hitchc. Chase plant material from a constructed wetland system treating domestic wastewater in Cameroon

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

Evaluation of physical, chemical and heavy metal concentration of food waste composting

Contact Info

Product

Resources

About