Biosensor for the Determination of Biochemical Oxygen Demand in Rivers

Chee, Gab-Joo

doi:10.5772/16370

Cited by 3 publications

(2 citation statements)

References 68 publications

(80 reference statements)

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“…11). This result, when extrapolated to a wide range of design variables, shows the great adaptability of the proposed system to any range of BOD with a response time similar to those prototypes of respirometric bioreactor of the last generation [5,8,11,[47][48][49][50].…”

Section: Mathematical Model Of the Biosensormentioning

confidence: 62%

A BOD monitoring disposable reactor with alginate-entrapped bacteria

Villalobos

Acevedo

Albornoz

et al. 2010

Bioprocess Biosyst Eng

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Biochemical oxygen demand (BOD) is a measure of the amount of dissolved oxygen that is required for the biochemical oxidation of the organic compounds in 5 days. New biosensor-based methods have been conducted for a faster determination of BOD. In this study, a mathematical model to evaluate the feasibility of using a BOD sensor, based on disposable alginate-entrapped bacteria, for monitoring BOD in situ was applied. The model considers the influences of alginate bead size and bacterial concentration. The disposable biosensor can be adapted according to specific requirements depending on the organic load contained in the wastewater. Using Klein and Washausen parameter in a Lineweaver-Burk plot, the glucose diffusivity was calculated in 6.4 × 10(-10) (m2/s) for beads of 1 mm in diameter and slight diffusion restrictions were observed (n = 0.85). Experimental results showed a correlation (p < 0.05) between the respirometric peak and the standard BOD test. The biosensor response was representative of BOD.

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Section: Mathematical Model Of the Biosensormentioning

confidence: 62%

A BOD monitoring disposable reactor with alginate-entrapped bacteria

Villalobos

Acevedo

Albornoz

et al. 2010

Bioprocess Biosyst Eng

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“…Recently, novel approaches to the biosensor analysis of the BOD have started to be developed; these approaches make it possible to achieve an acceptable fit of the data obtained by biosensor measurements with those determined by traditional methods and to approach the solution of many applied issues. Thus, methods of determining the BOD in water bodies of rivers are being developed, which is of extreme importance along with the assessment of the BOD in waste waters (Chee, 2011). A highly efficient approach is to couple two procedures -cleanup of polluted wastewaters from organic impurities and production of electric energy by using biofuel cells based on microbial cells (Deng et al, 2012;Du et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

BOD Biosensors: Application of Novel Technologies and Prospects for the Development

Решетилов¹,

Arlyapov²,

Алферов³

et al. 2013

State of the Art in Biosensors - Environmental and Medical Applications

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A. Reshe"ilov, V. Arlyapov, V. Alferov and T. Reshe"ilova Addi"ional informa"ion is available a" "he end of "he chap"er h""p://dx.doi.org/10.5772/52385 . IntroductionHousehold and industrial human activities cause ever increasing pollution of water bodies of rivers, lakes, water reservoirs, seas. Express assessment of the extent of pollution by organic compounds is an important and, in some cases, essential component of ecological control. Given the constantly growing list of substances released into the environment as pollutants, it can be stated that complete chemical analysis is a complex and expensive procedure. An efficient tool of analysis proves to be methods based on an integral assessment of organic components. In this context, significant attention is given to the development of biosensor methods of control that enable an integral estimate of pollution density, considerably increase operational efficiency of the analysis and reduce its cost D'Souza, .An essential integral characteristic of the quality of water is biochemical oxygen demand BOD , i.e., the amount of dissolved oxygen in mg required to oxidize all biodegradable organic compounds that occur in dm of water. The BOD assessment is an empirical test in which a standardized laboratory procedure is used to determine the oxygen demand in analyzed water samples. The BOD is determined conditionally by the change of oxygen content before and after placing a water sample into a sealed flask and holding it for a certain period of time. The standard BOD determination method assumes incubation of an oxygensaturated sample, into which activated sludge a mixture of various microorganisms is introduced, for , , or days BOD , BOD , BOD or BOD , respectively at °C Standard Methods…, . The obtained result -the amount of consumed oxygen normalized to dm -characterizes the total content of biochemically oxidizable organic impurities in water, as well as its capability of self-clarification. In surface waters of most water bodies, the values of BOD usually change within the range of . -mg/dm and are subject © 2013 Reshe"ilov e" al.; licensee InTech. This is an open access ar"icle dis"rib""ed "nder "he "erms of "he Crea"ive Commons A""rib""ion License (h""p://crea"ivecommons.org/licenses/by/3.0), which permi"s "nres"ric"ed "se, dis"rib""ion, and reprod"c"ion in any medi"m, provided "he original work is properly ci"ed.to seasonal and diurnal variations. Changes of BOD values vary rather significantly depending on the extent of water body pollution. Depending on the category of a water body, the value of BOD is regulated as follows it should be no more than mg/dm for water bodies of household water use and no more than mg/dm for water bodies of social-amenity and recreational water use. For seas categories I and II of fish-husbandry water utilization the BOD at °C should not exceed mg/dm . The BOD test is also widely used at wastewater treatment facilities to assess the biodegradation efficiency in wastewater purification processes. The traditional BOD test has cert...

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Electronic nose for water monitoring: The relationship between wastewater quality indicators and odor

Palasuek

Seesaard

Kunarak

et al. 2015

2015 12th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

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An electronic nose (e-nose) comprlsmg a non specific sensor array based on metal oxide semiconductors was employed to monitor wastewater samples, collected various sources in Bangkok, i.e., Sam sen canal, Nanglerng canal, Praemprachakorn canal and Sanseab canal for 6 weeks (from the end of March to the first week of July), and compared with the fresh water supply. It was found that our electronic nose can classify odor of wastewater and fresh water. Moreover the relationship between wastewater quality indicators, including BOD5, DO and pH, with odor measured by the e-nose was observed. The results have shown that BOD increases with the increasing ammonia concentration according to the oxygen demand for oxidization of ammonia. In addition, nitric acid that was produced by oxidization of ammonia leads to acidic water.Although more experiments to prove correlation between electronic nose sensor response and BOD5 value are required, this preliminary study has offered a new alternative for cheap and real-time water monitoring.

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Biosensor for the Determination of Biochemical Oxygen Demand in Rivers

Cited by 3 publications

References 68 publications

A BOD monitoring disposable reactor with alginate-entrapped bacteria

A BOD monitoring disposable reactor with alginate-entrapped bacteria

BOD Biosensors: Application of Novel Technologies and Prospects for the Development

Electronic nose for water monitoring: The relationship between wastewater quality indicators and odor

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