Quantitative characterization and effective inactivation of biological hazards in struvite recovered from digested poultry slurry

Muhmood, Atif; Wang, Xiqing; Dong, Renjie; Xiao, Hong‐Wei; Wu, Shubiao

doi:10.1016/j.watres.2021.117659

Cited by 6 publications

(3 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There was a slight difference in the peak intensity between the crystal planes of the struvite product of the non-seeded and seeded struvite precipitation. In particular, the relative strength of (0 2 0) and (0 4 0) crystal planes was relatively high, which may be caused by the adhesion of organic matter in the leachate ( Muhmood et al, 2021 ). The struvite products obtained in each precipitation process showed the same peak positions in the FT-IR diagram ( Figure 7B ), and were similar to those of other reported struvite products ( Suguna et al, 2012 ).…”

Section: Resultsmentioning

confidence: 99%

Biochar-seeded struvite precipitation for simultaneous nutrient recovery and chemical oxygen demand removal in leachate: From laboratory to pilot scale

et al. 2022

View full text Add to dashboard Cite

Refuse transfer station (RTS) leachate treatment call for efficient methods to increase nutrient recovery (NH4+−N and PO43−−P) and chemical oxygen demand (COD) removal. In this study, the effects of various operational factors (seeding dose, pH, initial NH4+-N concentration, and reaction time) on biochar-seeded struvite precipitation were investigated at laboratory and pilot scales. Mealworm frass biochar (MFB) and corn stover biochar (CSB) were used as seeding materials to compare with traditional seed struvite. The maximum NH4+−N and PO43−−P recover efficiency of the MFB-seeded process reached 85.4 and 97.5%, higher than non-seeded (78.5 and 88.0%) and CSB-seeded (80.5 and 92.0%) processes and close to the struvite-seeded (84.5 and 95.1%) process. The MFB-seeded process also exhibited higher COD removal capacity (46.4%) compared to CSB-seeded (35.9%) and struvite-seeded (31.2%) processes and increased the average particle size of the struvite product from 33.7 to 70.2 μm for better sustained release. XRD, FT-IR, and SEM confirmed the orthorhombic crystal structure with organic matter attached to the struvite product. A pilot-scale test was further carried out in a custom-designed stirred tank reactor (20 L). In the pilot-scale test, the MFB-seeded process still spectacularly recovered 77.9% of NH4+−N and 96.1% of PO43−−P with 42.1% COD removal, which was slightly lower than the laboratory test due to insufficient and uniform agitation. On the whole, MFB-seeded struvite precipitation is considered to be a promising pretreatment method for rural RTS leachate.

show abstract

Section: Resultsmentioning

confidence: 99%

Biochar-seeded struvite precipitation for simultaneous nutrient recovery and chemical oxygen demand removal in leachate: From laboratory to pilot scale

et al. 2022

View full text Add to dashboard Cite

show abstract

“…According to our published study, Escherichia coli, Clostridium perfringens, Streptococcus faecalis, and Salmonella typhimurium were the main pathogenic species in the anaerobic digestates. Thus, the different states (culturable and non-cultivable (VBNC) of these pathogens in the anaerobic digestates before and after treatment were quantified following the method described in [4]. Briefly, reverse transcription-quantitative PCR was used to determine the total number of viable pathogens, while the culturable state was counted using a selective agar medium.…”

Section: Pathogen Analysismentioning

confidence: 99%

“…Biogas plants can produce clean energy while treating organic waste, and the treated digestate may also become organic fertilizer [3]. However, in practice, digestate is often not used directly in situ as expected, due to the low content of active compounds and high content of harmful substances (e.g., pathogens) [4]. Therefore, the disposal of digestate has become a major bottleneck to the industrialization of large-scale biogas plants.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Fertilizer Quality and Remediation Ability of Anaerobic Digestate via Myrothecium verrucaria Treatment

Yang

Gong

et al. 2023

Fermentation

Self Cite

View full text Add to dashboard Cite

Low fertilizer quality and remediation ability are considered the major factors hampering the land application of anaerobic digestate. Therefore, the role of Myrothecium verrucaria treatment in enhancing the fertilizer quality and remediation ability of digestate for land application was explored. Higher content of humic acid (7.5 g/L) with a higher degree of humification index and oxygen-containing functional groups was observed in the digestate receiving Myrothecium verrucaria treatment. Likewise, humic acid formed from Myrothecium verrucaria treatment had a higher capacity of heavy metal binding. Moreover, the viable and culturable count of S. faecalis, S. typhi, C. perfringens, and E. coli pathogens in the digestate decreased to approximately 12.50%, 41.70%, 18.87%, and 50.00% and 25.97%, 64.44%, 37.51%, and 75.27%, respectively, after treatment with Myrothecium verrucaria. This study provided a novel strategy to enhance the fertilizer quality, remediation ability, and biological safety of anaerobic digestate for land application.

show abstract

Interactive impact of Myrothecium verrucaria and MnO2 on fertilizer quality and biological safety of anaerobic digestate

Tian

Muhmood

Ren

et al. 2023

Journal of Cleaner Production

View full text Add to dashboard Cite

Quantitative characterization and effective inactivation of biological hazards in struvite recovered from digested poultry slurry

Cited by 6 publications

References 75 publications

Biochar-seeded struvite precipitation for simultaneous nutrient recovery and chemical oxygen demand removal in leachate: From laboratory to pilot scale

Biochar-seeded struvite precipitation for simultaneous nutrient recovery and chemical oxygen demand removal in leachate: From laboratory to pilot scale

Enhancing the Fertilizer Quality and Remediation Ability of Anaerobic Digestate via Myrothecium verrucaria Treatment

Interactive impact of Myrothecium verrucaria and MnO2 on fertilizer quality and biological safety of anaerobic digestate

Contact Info

Product

Resources

About