Odour reducing microbial-mineral additive for poultry manure treatment

Abstract

Poultry production systems are associated with emissions of odorous volatile organic compounds (VOCs), ammonia (NH3), hydrogen sulfide (H2S), greenhouse gases, and particulate matter. Development of mitigation technologies for these emissions is important. Previous laboratory-scale research on microbialmineral treatment has shown to be effective for mitigation of NH3, H2S and amines emissions from poultry manure. The aim of this research was to assess the effectiveness of surface application of a microbial-mineral treatment for other important odorants, i.e., phenolics and sulfur-containing VOCs. Microbial-mineral litter additive consisting of 20% (w/w) of bacteria powder (six strains of heterotrophic bacteria) and 80% of mineral carrier (perlite-bentonite) was used at a dose of 500 g•m-2(per ~31 kg of manure). Samples of air were collected in two series, 4 and 7 days after application of additives. An odor profile of the poultry manure was determined using simultaneous chemical and sensory analysis. Reduction levels of VOCs determined on Day 4 was between 31% and 83% for mineral adsorbent treatment and in the range of 9% and 96% for microbial-mineral additive, depending on the analyzed compound. Reduction levels on Day 7 were considerably lower than on Day 4, suggesting that the odorous VOCs treatment efficacy is relatively short. There was no significant difference between treatments consisting of microbial-mineral additive and mineral carrier alone.

Evaluation of Semi-Continuous Pit Manure Recharge System Performance on Mitigation of Ammonia and Hydrogen Sulfide Emissions from a Swine Finishing Barn

“…The source-based approaches can manage emissions at the odor source, usually addressing emissions from manure. Various topical additives to swine manure surface such as biochar [26], soybean peroxidase [27,28], and poultry manure such as zeolites [29], and bioactive sorbents [30] have been tested. Because swine barn odor is mainly caused by emissions from manure [31], the source-based methods are aimed at proper manure management.…”

VOC Removal from Manure Gaseous Emissions with UV Photolysis and UV-TiO2 Photocatalysis

“…Odor, VOCs, GHGs, NH 3 and H 2 S mitigation technologies for livestock operations have been reviewed [21]. The main approaches for livestock housing include barriers, biofiltration, chimneys, diet modification, electrostatic precipitation, landscaping, oil sprinkling, manure pit additives and ventilation, scrubbers, siting, and setbacks, urine/feces separation, and UV light [22][23][24][25][26][27][28][29][30]. To date, however, these technologies, save for biofilters and scrubbers, have a limited on-farm implementation and performance record in the U.S. due to complex regulatory and socioeconomic factors.…”

The Impact of Biochar Treatment on H2S and NH3 Emissions During Manure Agitation prior to Pump-Out

“…Still, sciencebased guides as well as more data are needed to evaluate manure additive effectiveness on the mitigation of gases emitted from storage (Maurer et al, 2016). From recent studies, manure additives such as soybean peroxidase, zeolite, and biochar show the effectiveness of mitigating NH3, H2S, VOCs, and GHG emissions from swine manure (Maurer et al, 2017a(Maurer et al, , 2017b(Maurer et al, , 2017cParker et al, 2016;Cai et al, 2007;Kalus, 2017). Additionally, in our recent research, we evaluated numerous commercial manure additives for gaseous emissions mitigation, but there are no statistically significant findings (Chen, 2019).…”