Control of Gas and Odor Levels in Swine Facilities Using Filters with Zinc Oxide Nanoparticles

2017 ◽  
Vol 60 (3) ◽  
pp. 943-956 ◽  
Author(s):  
Alvin C. Alvarado ◽  
Bernardo Z. Predicala
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Zno Nanoparticles ◽  
Gas Flow ◽  
Pilot Scale ◽  
Air Filtration ◽  
65 H ◽  
Pig Performance ◽  
Face Velocity ◽  
Filter Area

Abstract. The effectiveness of zinc oxide (ZnO) nanoparticles as filtering media for controlling the levels of hydrogen sulfide (H2S), ammonia (NH3), and odor in swine facilities was evaluated in this study. Semi-pilot scale tests were done to determine basic operational factors, the results of which showed that the fluidized bed air filtration system (FBAFS), loaded with ZnO nanoparticles at a rate of 0.28 g cm-2 of filter area, and a gas flow rate equivalent to 0.5 m s-1 face velocity achieved significant reduction in target gas levels. The performance of this filter system was further investigated in a room-scale environmental chamber representative of normal swine production conditions. When installed as part of the ventilation air recirculation system of the room, the FBAFS with ZnO nanoparticles achieved about 65% H2S and 42% NH3 reductions in the human-occupied zones but had no significant impact on pig performance as well as odor levels in the chamber. Keywords: Ammonia, Face velocity, Filtration, Hydrogen sulfide, Nanoparticles, Odor, Swine, Ventilation, Zinc oxide.

Chemical Characterization of Mesoporous Material Supported ZnO Nanoparticles for Hydrogen Sulfide Capture from Gas Streams

2010 ◽  
Vol 129-131 ◽  
pp. 143-148 ◽  
Author(s):  
Xiao Hui Wang
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Zno Nanoparticles ◽  
Mesoporous Material ◽  
Chemical Characterization ◽  
Zinc Content ◽  
Gas Mixture ◽  
Gas Streams ◽  
Before And After

A series of zinc oxide-modified mesoporous SBA-15 materials were synthesized. The desulphurization test with a gas mixture containing 0.1 vol % hydrogen sulfide was carried out on these materials. Materials before and after the desulphurization test were analyzed using a variety of characterization techniques. The results suggest that zinc oxide modification can accelerate the transformation from a mesoporous to a zeolitic phase. The sample with the zinc content higher than 15.5 wt % shows the highest hydrogen sulfide breakthrough capacity up to 177.3 mg S/g.

ZINC OXIDE NANOPARTICLES FOR ULTRAVIOLET PHOTODETECTION

2011 ◽  
Vol 20 (01) ◽  
pp. 183-194 ◽  
Author(s):  
SHAYLA SAWYER ◽  
LIQIAO QIN ◽  
CHRISTOPHER SHING
Keyword(s):  
Zinc Oxide ◽  
Gallium Nitride ◽  
Zno Nanoparticles ◽  
Green Emission ◽  
Synthesis Process ◽  
Voltage Response ◽  
Zno Nanoparticle ◽  
Linear Current ◽  
Current Voltage ◽  
Lift Off

Zinc Oxide ( ZnO ) nanoparticles were created by a top-down wet-chemistry synthesis process ( ZnO - A ) and then coated with polyvinyl-alcohol (PVA) ( ZnO - U ). In ZnO - U , strong UV emission was apparent while the parasitic green emission, which normally appears in ZnO suspensions, was suppressed. A standard lift-off process via e-beam lithography was used to fabricate a detector by evaporating Aluminum ( Al ) as ohmic electrodes on the ZnO nanoparticle film. Photoconductivity experiments showed that linear current-voltage response were achieved and the ZnO - U nanoparticles based detector had a ratio of UV photo-generated current more than 5 times better than that of the ZnO - A based detector. In addition, non-linear current-voltage responses were observed when interdigitated finger Gold ( Au ) contacts were deposited on ZnO - U . The UV generated current to dark current ratios were between 4 and 7 orders of magnitude, showing better performance than the photodetector with Al contacts. ZnO - U were also deposited on Gallium Nitride ( GaN ) and Aluminum Gallium Nitride ( AlGaN ) substrates to create spectrally selective photodetectors. The responsivity of detector based on AlGaN is twice that of commercial UV enhanced Silicon photodiodes. These results confirmed that ZnO nanoparticles coating with PVA is a good material for small-signal, visible blind, and wavelength selective UV detection.

In situ sulfur K-edge X-ray absorption spectroscopy of the reaction of zinc oxide with hydrogen sulfide

1996 ◽  
pp. 1431 ◽  
Author(s):  
John Evans ◽  
Judith M. Corker ◽  
Clive E. Hayter ◽  
Richard J. Oldman ◽  
B. Peter Williams
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
X Ray Absorption

Microbiote shift in sequencing batch reactors in response to antimicrobial ZnO nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110108-110111 ◽  
Author(s):  
Zhenghui Liu ◽  
Huifang Zhou ◽  
Jiefeng Liu ◽  
Xudong Yin ◽  
Yufeng Mao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Wastewater Treatment ◽  
Adverse Effects ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Wastewater Treatment Plants ◽  
Oxide Nanoparticles ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Zno Nps

Zinc oxide nanoparticles (ZnO NPs) have been monitored in wastewater treatment plants as their potential adverse effects on functional microorganisms have been causing increasing concern.

In-situ prevention of hydrogen sulfide formation during anaerobic digestion using zinc oxide nanowires

2018 ◽  
Vol 6 (1) ◽  
pp. 110-118 ◽  
Author(s):  
Robert Lupitskyy ◽  
Dania Alvarez-Fonseca ◽  
Zachary D. Herde ◽  
Jagannadh Satyavolu
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Anaerobic Digestion ◽  
Zinc Oxide Nanowires ◽  
Oxide Nanowires

Raspberry-like morphology of polyvinyl chloride/zinc oxide nanoparticles induced by surface interaction and formation of nanoporous foam

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36845-36857 ◽  
Author(s):  
Tingting Ren ◽  
Jie Wang ◽  
Jinfeng Yuan ◽  
Mingwang Pan ◽  
Gang Liu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Polyvinyl Chloride ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Surface Interaction ◽  
Oxide Nanoparticles ◽  
Nano Coating ◽  
Coating Method

P(VC-co-AAEM)/ZnO nanoparticles are prepared by a nano-coating method, and the morphology of the raspberry-like particles is adjusted by hydrophilicity and NaOH concentration.

Microwave Synthesis of ZnO Nanoparticles for Enhanced Oil Recovery

2014 ◽  
Vol 1024 ◽  
pp. 83-86 ◽  
Author(s):  
Mohamad Sahban Alnarabiji ◽  
Noorhana Yahya ◽  
Sharifa Bee Abd Hamid ◽  
Khairun Azizi Azizli ◽  
Afza Shafie ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Zno Nanoparticles ◽  
Sol Gel ◽  
Zinc Nitrate ◽  
Nitrate Hexahydrate ◽  
Zno Nps ◽  
Nanoparticle Morphology ◽  
Original Oil In Place

Synthesising zinc oxide nanoparticles to get certain specific characteristics to be applied in Enhanced oil recovery (EOR) is still challenging to date. In this work, zinc oxide (ZnO) nanoparticles were synthesised using the sol-gel method by dissolving zinc nitrate hexahydrate in nitric acid. The ZnO crystal and particles morphology and structure were determined using X-ray Diffractometer (XRD) and Field Emission Scanning Electron Microscope (FESEM). In this study, a microwave oven was used for annealing ZnO without insulating a sample in any casket. The results show that 30 and 40 minutes of annealing and stirring for 1 hour influenced the morphology and size of zinc oxide particles in nanoscale. These parameters could be tailored to generate a range of nanoparticle morphology (agglomerated nanoparticles in a corn-like morphology), a crystal size with the mean size of 70.5 and 74.9 nm and a main growth at the peak [10. EOR experiment were conducted by dispersing 0.10 wt% ZnO NPs in distilled water to form a ZnO nanofluid. Then the fluid was injected into the medium in the 3rd stage of the oil recovery to present EOR stage. It was found that ZnO nanofluid has the ability to extract 8% of the original oil in place (OOIP).

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