ammonia gas
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Author(s):  
Yu Wang ◽  
Tong Cheng ◽  
Cunguang Lou ◽  
Xin Liu ◽  
Xitong Li ◽  
...  
Keyword(s):  

Author(s):  
Salman Ali ◽  
Mohammed Jameel ◽  
Glenn Oldham ◽  
Akhil Gupta ◽  
Mahnaz Shafiei ◽  
...  

An amperometric type sensor whose active layer is derived from a tetra core-substituted organic semiconductor, naphthalene diimide (NDI-CN4), has been evaluated for ammonia gas (3, 6, 25 and 50 ppm)...


2022 ◽  
Vol 283 ◽  
pp. 116962
Author(s):  
Siti Azlida Ibrahim ◽  
Norizah Abdul Rahman ◽  
Mohd Hanif Yaacob ◽  
Muhammad Hafiz Abu Bakar ◽  
Fatimah Syahidah Mohamad ◽  
...  

2022 ◽  
Vol 130 (2) ◽  
pp. 305
Author(s):  
М.Ю. Васильков ◽  
И.Н. Михайлов ◽  
Ю.В. Никулин ◽  
С.С. Волчков ◽  
Д.А. Зимняков ◽  
...  

Spectral optical properties of synthesized ceramic nanoporous membranes based on anodic aluminum oxide coated silver in saturated ammonia gas flow have been experimentally investigated. Based on the measured transmission spectra and detected interference part of the spectra in wavelength range from 550 to 900 nm, temporal and spectral dependencies of the effective optical thickness and its changes in non-equilibrium conditions were obtained due to adsorption of ammonia molecules on silver film surface. According to detected and measured interference maximum shifts up to 14 nm in transmission spectra of Al2O3 + Ag membranes in ammonia gas flow, the possibility of constructing a selective interferometric optical sensors with 10 − 15 min response time is shown.


FlatChem ◽  
2022 ◽  
pp. 100333
Author(s):  
Yi Ou ◽  
Yong Zhou ◽  
Yongcai Guo ◽  
Xiangyi Zhu ◽  
Bochao Liu ◽  
...  

2021 ◽  
Vol 10 (1) ◽  
pp. 77
Author(s):  
Sun-Il Kim ◽  
Wan Heo ◽  
So-Jung Lee ◽  
Young-Jun Kim

Ammonia from livestock manure reacts with chemical components discharged from various emission sources to produce airborne particulate matter. This study aimed to investigate a novel effective microbial agent to suppress ammonia gas emitted from manure. Both isolated L12I and 12III strains, identified as Pediococcus acidilactici (PA), were selected for their superior activity in assays performed with the evaluation criteria such as acid production, ammonia decomposition, and urease inhibition, which are key factors influencing ammonia excretion. The survivability of PA strains was confirmed by an increase in DNA abundance in the manure. PA strains lowered the pH of manure and suppressed the growth of hyper-ammonia-producing bacteria (HAB) possessing urease activity. The L12I and 12III treatment groups showed 23.58% and 38.00% emission reductions, respectively. Especially, the 12III strain was proven to be the more effective strain for reducing ammonia gas emission, with the best ability to reduce pH and inhibit HAB. The strains could have an additive effect in improving the manure quality as a nitrogen fertilizer by preserving the total nitrogen and urea content. These results suggest that PA strains can be used as unprecedented microbial agents to improve manure-derived environmental pollution and improve fertilizer quality.


Author(s):  
Ikha Rasti Julia Sari ◽  
Januar Arif Fatkhurrahman ◽  
Yose Andriani

Ammonia known as harmful gas that could impact on health and environment. Typically, ammonia gas emitted by fertilizer industry, rubber factory, etc. There are many options for advance industry to control ammonia gas pollution, absorption tower using water scrubber and using activated carbon as adsorption reaction could be an option. But for middle- and lower-class industry, it is common in Indonesia, as seen on many rubber factories, ammonia gas pollution is serious problem to control, actually they have used wet scrubber but eficiency is lower about 47%. This study measure performance for ammonia elimination as gas pollutant using absorption tower and adsorption tower in laboratory scale. Using electrochemical gas sensor, we measure both ammonia concentration for inlet and outlet simultaneously to settle saturation point of these two types of ammonia emission control. In conclusion, Ammonia absorbed in water proportional to saturation time and absorbent volume. Highest absorbed ammonia concentration 1.538 mg/L on 4000 mL absorbent. For Adsorption system, saturation time proportional and correlated to adsorbent weight and Adsorption capacity reverse correlated to adsorbent weight. Optimum adsorption point can be achieved from intersection curve between saturation time and adsorption capacity which is 1200 grams adsorbent


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