Reduction of trihalomethane precursors of dissolved organic matter in the secondary effluent by advanced treatment processes

Wei, Liangliang; Zhao, Qingliang; Xue, Sha; Chang, Chein‐Chi; Tang, Feng; Liang, Guan-Liang; Jia, Tong

doi:10.1016/j.jhazmat.2009.04.045

Cited by 33 publications

(7 citation statements)

References 57 publications

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“…FT-IR spectroscopy provides a non-destructive, fast and highly sensitive method for sludge organics analysis [28]. Generally, the spectral region of 3000-2800 cm -1 for the FT-IR spectrum was commonly assigned to fatty acid related compounds; the regions of 1680-1650 cm -1 , 1570-1540 cm -1 and 1210-1250 cm -1 were attributed to the presence of Amide I, Amide II and Amide III related carbonyl proteins.…”

Section: Chemical Characteristics Of the Extracted Proteins And Humicmentioning

confidence: 99%

Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic acid from sewage sludge

Wei

Wang

Kong

et al. 2014

Front. Environ. Sci. Eng.

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A novel method was applied to co-recover proteins and humic acid from the dewatered sewage sludge for liquid fertilizer and animal feed. The proteins in sewage sludge were first extracted using the processes of ultrasonication and acid precipitation, and then the humic acid was recovered via membrane filtration. The extraction efficiency was 125.9 mg humic acid•g -1 VSS volatile suspended solids (VSS) and 123.9 mg proteins•g -1 VSS at the optimal ultrasonic density of 1.5 W•mL -1 . FT-IR spectrum results indicated that the recovered proteins and humic acid showed similar chemical characteristic to the natural proteins and humic acid. The acidic solution (pH 2) could be recycled and used more than 10 times during the co-recovery processes. In addition, the dewatered sludge could be easily biodegraded when the humic acid and proteins are extracted, which was essential for further utilization. These findings are of great significance for recovering valuable nutrient from sewage sludge.

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Section: Chemical Characteristics Of the Extracted Proteins And Humicmentioning

confidence: 99%

Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic acid from sewage sludge

Wei

Wang

Kong

et al. 2014

Front. Environ. Sci. Eng.

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“…HPI was the carbon not retained on either resin. A complete description of the isolation methods was given by Wei et al (2009).…”

Section: Fractionation Proceduresmentioning

confidence: 99%

Removal and transformation of organic matters in domestic wastewater during lab-scale chemically enhanced primary treatment and a trickling filter treatment

Zhao

Zhong

Wang

et al. 2013

Journal of Environmental Sciences

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“…Over 700 DBPs are currently known [15], constituting only half of the total of organic chlorine. Natural dissolved organic matter (humic and fulvic acids, phenols, amines, products of algal metabolism) is the principal precursor of DBPs [16][17][18][19][20][21][22]. Intensive anthropogenic impacts on drinking water sources lead to the inhibition of natural water self-purification processes.…”

Section: Introductionmentioning

confidence: 99%

Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes

Vozhdaeva

Kholova²,

Melnitskiy³

et al. 2021

Molecules

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The main drawback of drinking water chlorination involves the formation of quite hazardous disinfection by-products (DBPs), represented mainly by halogenated species. Based on the authors’ monitoring data since 2002, the prevalence of chlorine over bromine in the composition of volatile DBPs was shown for the drinking water in Ufa (Russia). However, the situation was completely reversed in the case of semi-volatile DBPs. The principal goal of the present study involved rationalization of the results of the long-term monitoring. Gas chromatography–mass spectrometry (GC-MS) was used for the qualitative and quantitative analysis of volatile DBPs. Identification of semi-volatile compounds was carried out with GC-MS, while gas chromatography with an atomic emission detector (GC-AED) was used for their quantification. A significant contribution of oxygen to the composition of semi-volatile compounds proves the decisive role of the dissolved organic matter oxidative destructive processes. Statistical analysis revealed notable linear correlations for trihalomethane and haloacetic acid formation vs. chlorine dose. On the contrary, halogenated semi-volatile products do not demonstrate any correlations with the water quality parameters or chlorine dose. Principal component analysis (PCA) placed them into separate groups. The results allow for proposing that formation of the organohalogenated species involved the fast penetration of bromine into the humic matter molecules and, further, their oxidative destruction by active chlorine.

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Reduction of trihalomethane precursors of dissolved organic matter in the secondary effluent by advanced treatment processes

Cited by 33 publications

References 57 publications

Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic acid from sewage sludge

Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic acid from sewage sludge

Removal and transformation of organic matters in domestic wastewater during lab-scale chemically enhanced primary treatment and a trickling filter treatment

Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes

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