<i>In-Situ</i> Measurement of Ammonium in Wastewater Using a Tilted Fiber Grating Sensor

Ma, Penglei; Hu, Nan; Ruan, Jiajian; Song, Hongbing; Chen, Xiaoyong

doi:10.1109/jlt.2020.3040655

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…This table emphasizes the significance of these components as the core elements of the E-nose system. The comparison primarily focuses on crucial factors such as cost, speed, and accuracy, providing a valuable overview of their relative strengths and weaknesses [112].…”

Section: E-nose Sensor Type Vs Signal Processing Methodsmentioning

confidence: 99%

E-Nose-Driven Advancements in Ammonia Gas Detection: A Comprehensive Review from Traditional to Cutting-Edge Systems in Indoor to Outdoor Agriculture

Moshayedi

Khan

et al. 2023

Sustainability

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Ammonia (NH3) represents a perilous gas that poses a substantial hazard to both human well-being and the environment, particularly within agricultural regions. Agricultural activities constitute a primary source of ammonia emissions. Thus, effective monitoring and measurement of ammonia sources in agriculture are imperative for mitigating its adverse impact. However, not all existing ammonia detection methods are suitable for discerning the low concentrations typically encountered in agricultural ammonia volatilizing (ranging from 0.01 to 5 parts per million). Consequently, curtailing ammonia volatilization from farmland assumes paramount importance, with real-time monitoring serving as a crucial mechanism for assessing environmental contamination and minimizing agricultural ammonia losses. Deploying appropriate detection methodologies ensures that requisite measures are taken to safeguard human health and the environment from the deleterious repercussions of ammonia exposure. The present paper introduces a comprehensive approach to detecting and analyzing ammonia in agricultural settings. It elucidates the merits and demerits of conventional indoor and outdoor ammonia detection methods, juxtaposing them with the innovative technology of Electronic nose (E-nose). Within the paper, seven widely employed ammonia detection methods in farmland are scrutinized and compared against traditional techniques. Additionally, the constructional aspects and distinct components of E-nose are meticulously delineated and appraised. Ultimately, the paper culminates in a comprehensive comparative analysis encompassing all the aforementioned methodologies, elucidating the potential and limitations of E-nose in facilitating ammonia detection endeavors within agricultural contexts.

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Section: E-nose Sensor Type Vs Signal Processing Methodsmentioning

confidence: 99%

E-Nose-Driven Advancements in Ammonia Gas Detection: A Comprehensive Review from Traditional to Cutting-Edge Systems in Indoor to Outdoor Agriculture

Moshayedi

Khan

et al. 2023

Sustainability

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“…In particular, intrinsic fiber optic sensor can be divided into three categories; Structured sensor [3][4][5][6][7][8][9][10][11][12][13][14][15], fiber grating sensor [16,17] and interferometric sensor [18][19][20]. The most popular method that has been reported in the literature is structured-type sensor, which includes straight unclad fiber [4,7], tapered fiber [3], side polished fiber [12], reflective (tip) fiber [13,14] and bending fiber [9][10][11]15].…”

Section: Introductionmentioning

confidence: 99%

Ammonia detection in water with balloon-like plastic optical fiber sensor

et al. 2023

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This work presents the demonstration of a plastic optical fiber (POF)-based ammonia sensor. The sensor head is formed by bending an unclad fiber optic sensor into a balloon-like structure. The bending radius of the balloon-like bent fiber optic sensor is varied from 1.0 to 2.5 cm. The performance of each sensor is tested using ammonia solution with concentration ranging from 0 to 15 mg/L. Results show that the optimized performances of the proposed sensor occur when the bending radius is fixed at 1.5 cm. At this bending radius, the sensor illustrates the sensitivity of - 0.0024 (mg/L)-1 with linearity of 0.97 and resolution of - 4.17 mg/L. For comparison, the bent sensor is compared to the straight sensor and performances of the former is found to be more superior. In addition, the balloon-like bent sensor is further tested with real water samples. The sensor sensitivity is found to be - 0.0022 (mg/L)-1 with linearity of 0.95 and resolution of - 4.54 mg/L. The result shows that the sensor has comparable performance in the ammonia detection for both pure ammonia and real water samples. In essence, this balloon-like bent sensor functions without additional coating on the sensor head, making it favorable in terms of the simplicity of the design.

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“…Currently, TFBGs are used for the detection of ammonium in wastewater [13], for the assessment of the two-phase flow rate, which is important in the oil and gas industry and medicine, as well as in microfluidic analyses [14], for the creation of a twisting sensor that demonstrates high sensitivity to twisting [15], as temperature and strain sensors [16,17] , etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Temperature Dependence of TFBG With Tilt Angles of 20 and 40

Tolegenova¹,

Yerishova²,

Zhetpisbayeva³

et al. 2022

BTOUEn

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Due to advantages such as electromagnetic stability, durability, and high sensitivity, fiber Bragg gratings have found application as sensors of physical quantities. A special place in the line of such devices is occupied by Bragg gratings with tilted strokes (Tilted fiber Bragg grating- TFBG). At the moment, TFBGs are used to estimate the velocity of two-phase flows, to create a torsion sensor, as temperature and deformation sensors, etc. This article examines the possibility of implementing a temperature sensor based on TFBG with an angle of inclination of 2° and 4° inscribed in a single-mode optical fiber. For this purpose, experimental studies of the dependence of the wavelength of the Bragg resonance on temperature have been carried out. The grating period is 540 nm and the length is 10 mm. The temperature ranged from 30 °C to 85 °C in increments of 5 degrees. The results of the experiment are to find a linear dependence of the minimum wavelength of the Bragg resonance λB on the change in ambient temperature.

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In-Situ Measurement of Ammonium in Wastewater Using a Tilted Fiber Grating Sensor

Cited by 13 publications

References 37 publications

E-Nose-Driven Advancements in Ammonia Gas Detection: A Comprehensive Review from Traditional to Cutting-Edge Systems in Indoor to Outdoor Agriculture

E-Nose-Driven Advancements in Ammonia Gas Detection: A Comprehensive Review from Traditional to Cutting-Edge Systems in Indoor to Outdoor Agriculture

Ammonia detection in water with balloon-like plastic optical fiber sensor

Investigation of the Temperature Dependence of TFBG With Tilt Angles of 20 and 40

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