Identification of causative compounds and microorganisms for musty odor occurrence in the Huangpu River, China

Sun, Daolin; An, Wei; Yang, Min; Guo-guang, Chen; Zhang, Shujun

doi:10.1016/s1001-0742(12)60012-6

Cited by 31 publications

(19 citation statements)

References 26 publications

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“…In our previous investigation conducted in 2009, the intensity range of musty odor was 1.0e5.3, and Phormidium spp. (cyanobacteria) had been found to be responsible for 2-MIB production (Sun et al, 2013). However, the musty odor intensity increased significantly in this study, suggesting that the activity of odor producing cyanobacteria might be increased Wang et al, 2016).…”

Section: Mitigation Of the Septic And Musty Odorscontrasting

confidence: 55%

“…2-MIB produced by Phormidium spp. has been found to be the major musty odorant in HP River in our previous studies (Li et al, 2012b;Sun et al, 2013). In this study, however, geosmin became the major musty odorant.…”

Section: Odorant Removal In Wtpcontrasting

confidence: 49%

“…Occurrences of seasonal musty/earthy odors caused by some typical algal metabolites, including 2-methylisoborneol (2-MIB) and geosmin, have often been reported worldwide (Lin et al, 2002;Sun et al, 2013). Though reported less frequently, the septic odor caused by compounds such as thioethers and thiols is another important odor type because of its strong impact on human perception (Schiffman et al, 2001;Yang et al, 2008;Yu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…The Huangpu (HP) River, an important source water for Shanghai, has long been suffering from complicated odor problems, particularly the septic and musty odors (Sun et al, 2013;Guo et al, 2016). In order to completely abate the odor problem, the O 3 -BAC process has recently been adopted for all of the Water Treatment Plants (WTPs) using HP River source water.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Guo

Yang

et al. 2016

Water Research

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a b s t r a c tOzonation is known to be very effective in the removal of odorants from source water. However, it is not known if ozonation is effective in the removal of multiple odorants causing different types of odors. In this study, the removal performance for odors and odorants were evaluated in a Water Treatment Plant (WTP), which was equipped with coagulation, sedimentation, ozonation, biological activated carbon (BAC) filtration, sand filtration, and chlorination in succession and located in the downstream of the Huangpu (HP) River, over the period from April, 2014 to April, 2015. Flavor profile analysis (FPA) results showed that the source water was constantly associated with septic and musty odors. Geosmin and 2-MIB, with an average OAV of 4.54 and 1.38, respectively, were the major odorants for musty odor, while bis(2-chloroisopropyl) ether, DEDS and DMDS with an average OAV of 2.35, 1.65 and 0.78, respectively, might be responsible for the septic odor. While the musty odor could be removed effectively through the combination of ozonation and BAC, the septic odor and associated odorants required further treatment with sand filtration and chlorination for complete removal. It is clear that the advanced treatment process was effective for the treatment of source water containing complicated odorants. It should be noted that the sedimentation process needs careful management because release of odorants may occur during the treatment. The result of this study will be helpful for the mitigation of odors in WTP using source waters suffering from complicated odor problems.

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Section: Mitigation Of the Septic And Musty Odorscontrasting

confidence: 55%

Section: Odorant Removal In Wtpcontrasting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Guo

Yang

et al. 2016

Water Research

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“…Taste and odor (T/O) episodes in drinking water have been a recurring problem in many countries (Hayes and Burch, 1989;Izaguirre et al, 1999;Sun et al, 2013). The origins of T/O problems in drinking water are often found in source waters (Izaguirre et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Source-water odor during winter in the Yellow River area of China: Occurrence and diagnosis

Guo

et al. 2016

Environmental Pollution

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a b s t r a c tYellow River source water has long suffered from odor problems in winter. In this study, odor characteristics, potential odorants, and algae in the source water of six cities (Lanzhou, Yinchuan, Hohhot, Zhengzhou, Jinan and Dongying) along the Yellow River were determined in winter (February to March 2014). According to flavor profile analysis (FPA), moderate to strong fishy odors occurred in all cities, except for Lanzhou. At the same time, mild earthy/musty odors and septic/swampy odors were also detected. The strong fishy odor (FPA intensity, 8.5) in Yinchuan was attributed to the abnormal growth of Dinobryon (cell density, 5.7 Â 10 4 cells/mL), while the fishy odors in Hohhot, Zhengzhou, Jinan, and Dongying might be caused by Melosira and Cyclotella, Cryptomonas, Dinobryon, and Synedra, respectively. Unsaturated aldehydes, which have been reported to cause fishy odors, were not detected in all samples. However, some saturated aldehydes, including hexanal, heptanal, nonanal, decanal, and benzaldehyde, were detected with a total concentration range of 690 ng/L to 2166 ng/L, and might have partly contributed to the fishy odors. In addition, 2-MIB (5.77e21.12 ng/L) and geosmin (2.26e9.73 ng/L) were responsible for the earthy/musty odors in the Yellow River source waters, and dimethyl disulfide (648.2 ng/L) was responsible for the rancid/swampy odor (FPA intensity, 8.0) episode in Yinchuan. This is a comprehensive study reporting on the occurrence and possible reasons for the odor issues in the Yellow River source water during winter.

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Isolation and characterization of a new reported cyanobacterium Leptolyngbya bijugata coproducing odorous geosmin and 2-methylisoborneol

Wang

Xiao

Song

et al. 2015

Environ Sci Pollut Res

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The earthy-musty compounds geosmin and 2-methylisoborneol (MIB) produced by cyanobacteria are considered as the main biological causes of off-flavor events, especially in aquatic ecosystems. More than 50 filamentous cyanobacteria species have been documented as geosmin or MIB producers; however, little is known about the species coproducing these two metabolites. In this study, an epiphytic sample was collected from a river in Hubei, China. Three isolated strains (A2, B2, and B4) producing earthy odors were successfully isolated and identified as the cyanobacterium Leptolyngbya bijugata Anagnostidis et Komárek 1988 based on morphology and 16S rDNA sequences. Gas chromatography analysis confirmed that the isolated L. bijugata strains were geosmin and MIB coproducers, with accumulation ranging from 13.6 to 22.4 and 12.3 to 57.5 μg L −1 , respectively. The partial fragments of geosmin and MIB synthesis genes in the L. bijugata strains were cloned and sequenced. Further sequences and phylogenetic analysis indicated the high conservation and a common origin of these genes in cyanobacteria. This study is the first to report and characterize the coproduction of geosmin and MIB by L. bijugata, representing a new source for potential risk of off-flavor events.

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Identification of causative compounds and microorganisms for musty odor occurrence in the Huangpu River, China

Cited by 31 publications

References 26 publications

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Source-water odor during winter in the Yellow River area of China: Occurrence and diagnosis

Isolation and characterization of a new reported cyanobacterium Leptolyngbya bijugata coproducing odorous geosmin and 2-methylisoborneol

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