1
|
Ndwabu S, Malungana M, Mahlambi P. Efficiency comparison of extraction methods for the determination of 11 of the 16 USEPA priority polycyclic aromatic hydrocarbons in water matrices: Sources of origin and ecological risk assessment. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024; 20:1598-1610. [PMID: 38358000 DOI: 10.1002/ieam.4904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/16/2024]
Abstract
As a result of their toxicity, ease of analysis, and environmental occurrence, 16 polycyclic aromatic hydrocarbons (PAHs) were chosen as priority pollutants by the USEPA. Few studies have been conducted to assess the levels of PAHs in South Africa, especially KwaZulu Natal province, and no work has been done in the selected study area. Therefore, this study aimed to evaluate the levels of such PAHs in river water and wastewater samples and evaluate their source and ecological risk. The status of these PAHs in the South African environment has not been investigated fully, which is a gap this study intended to fill. The PAHs were determined using solid-phase extraction (SPE) and dispersive liquid-liquid microextraction (DLLME) methods. The optimization and validation of these methods indicated that both methods can be used for the extraction of PAHs in liquid samples. This is because of the acceptable %recovery of 72.1%-118% for SPE and 70.7%-88.4% for DLLME with a %RSD less than 10% (indicating high precision) that was obtained. The limit of detection and limit of quantification ranged from 5.0 to 18 ng/L and 6.0-20 ng/L for SPE and from 10 to 44 ng/L and 11 to 63 ng/L for DLLME. These results demonstrated that SPE is more accurate and sensitive than DLLME, which was also confirmed by statistical analysis. The PAH concentration levels ranged from not detected (nd) to 1046 ng/L in river water and nd to 778 ng/L in wastewater samples with naphthalene demonstrating dominance over all other PAHs in both water matrices. The PAHs were found to be of petrogenic origin and posed low ecological risk on average. Integr Environ Assess Manag 2024;20:1598-1610. © 2024 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
Collapse
Affiliation(s)
- Sinayo Ndwabu
- Department of Scientific Services, Laboratory Services, Pietermaritzburg, South Africa
- Department of Chemistry, University of KwaZulu Natal, Pietermaritzburg, South Africa
| | - Mncedisi Malungana
- Department of Scientific Services, Laboratory Services, Pietermaritzburg, South Africa
| | - Precious Mahlambi
- Department of Chemistry, University of KwaZulu Natal, Pietermaritzburg, South Africa
| |
Collapse
|
2
|
Liu Y, Li F, Li H, Tong Y, Li W, Xiong J, You J. Bioassay-based identification and removal of target and suspect toxicants in municipal wastewater: Impacts of chemical properties and transformation. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129426. [PMID: 35897175 DOI: 10.1016/j.jhazmat.2022.129426] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Municipal wastewater contains numerous chemicals and transformation products with highly diverse physiochemical properties and intrinsic toxicity; thus, it is imperative but challenging to identify major toxicants. Herein, toxicity identification evaluation (TIE) was applied to identify major toxicants in a typical municipal wastewater treatment plant (WWTP). Impacts of chemical properties on the removal of contaminants and toxicity at individual treatment stages were also examined. The WWTP influent caused 100% death of Daphnia magna and zebrafish embryos, and toxicity characterization suggested that organics, metals, and volatiles all contributed to the toxicity. Toxicity identification based on 189 target and approximately one-thousand suspect chemicals showed that toxicity contributions of organic contaminants, metals, and ammonia to D. magna were 77%, 4%, and 19%, respectively. Galaxolide, pyrene, phenanthrene, benzo[a]anthracene, fluoranthene, octinoxate, silver, and ammonia were identified as potential toxicants. Comparatively, the detected transformation products elicited lower toxicity than their respective parent contaminants. In contrast, the analyzed contaminants showed negligible contributions to the toxicity of zebrafish embryos. Removal efficiencies of these toxicants in WWTP were highly related to their hydrophobicity. Diverse transformation and removal efficiencies of contaminants in WWTPs may influence the chemical compositions in effluent and ultimately the risk to aquatic organisms in the receiving waterways.
Collapse
Affiliation(s)
- Yuan Liu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510443, China
| | - Faxu Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510443, China
| | - Huizhen Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510443, China.
| | - Yujun Tong
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510443, China
| | - Weizong Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510443, China
| | - Jingjing Xiong
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China
| | - Jing You
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510443, China
| |
Collapse
|
3
|
Asante-Sackey D, Rathilal S, Tetteh EK, Armah EK. Membrane Bioreactors for Produced Water Treatment: A Mini-Review. MEMBRANES 2022; 12:275. [PMID: 35323750 PMCID: PMC8955330 DOI: 10.3390/membranes12030275] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 12/30/2022]
Abstract
Environmentalists are prioritizing reuse, recycling, and recovery systems to meet rising water demand. Diving into produced water treatment to enable compliance by the petroleum industry to meet discharge limits has increased research into advanced treatment technologies. The integration of biological degradation of pollutants and membrane separation has been recognized as a versatile technology in dealing with produced water with strength of salts, minerals, and oils being produced during crude refining operation. This review article presents highlights on produced water, fundamental principles of membrane bioreactors (MBRs), advantages of MBRs over conventional technologies, and research progress in the application of MBRs in treating produced water. Having limited literature that specifically addresses MBRs for PW treatment, this review also attempts to elucidate the treatment efficiency of MBRs PW treatment, integrated MBR systems, general fouling, and fouling mitigation strategies.
Collapse
Affiliation(s)
- Dennis Asante-Sackey
- Green Engineering and Sustainability Research Group, Department of Chemical Engineering, Faculty of Engineering and the Built Environment, Durban University of Technology, Durban 4001, South Africa or (D.A.-S.); (S.R.); or (E.K.A.)
- Department of Chemical Engineering, Faculty of Engineering and Technology, Kumasi Technical University, Kumasi P.O. Box 854, Ghana
| | - Sudesh Rathilal
- Green Engineering and Sustainability Research Group, Department of Chemical Engineering, Faculty of Engineering and the Built Environment, Durban University of Technology, Durban 4001, South Africa or (D.A.-S.); (S.R.); or (E.K.A.)
| | - Emmanuel Kweinor Tetteh
- Green Engineering and Sustainability Research Group, Department of Chemical Engineering, Faculty of Engineering and the Built Environment, Durban University of Technology, Durban 4001, South Africa or (D.A.-S.); (S.R.); or (E.K.A.)
| | - Edward Kwaku Armah
- Green Engineering and Sustainability Research Group, Department of Chemical Engineering, Faculty of Engineering and the Built Environment, Durban University of Technology, Durban 4001, South Africa or (D.A.-S.); (S.R.); or (E.K.A.)
- Department of Applied Chemistry, School of Chemical and Biochemical Sciences, C.K. Tedam University of Technology and Applied Sciences, Navrongo P.O. Box 24, Ghana
| |
Collapse
|
4
|
A Mechanistic Model to Assess the Fate of Naphthalene and Benzo(a)pyrene in a Chilean WWTP. Processes (Basel) 2021. [DOI: 10.3390/pr9081313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a family of organic compounds of widespread presence in the environment. They are recalcitrant, ubiquitous, prone to bioaccumulation, and potentially carcinogenic. Effluent from wastewater treatment plants (WWTPs) constitutes a major source of PAHs into water bodies, and their presence should be closely monitored, especially considering the increasing applications of potable and non-potable reuse of treated wastewater worldwide. Modeling the fate and distribution of PAHs in WWTPs is a valuable tool to overcome the complexity and cost of monitoring and quantifying PAHs. A mechanistic model was built to evaluate the fate of PAHs in both water and sludge lines of a Chilean WWTP. Naphthalene and benzo(a)pyrene were used as models of low-MW and high-MW PAHs. As there were no reported experimental data available for the case study, the influent load was determined through a statistical approach based on reported values worldwide. For both naphthalene and benzo(a)pyrene, the predominant mechanism in the water line was sorption to sludge, while that in the sludge line was desorption. Compared to other studies in the literature, the model satisfactorily describes the mechanisms involved in the fate and distribution of PAHs in a conventional activated sludge WWTP. Even though there is evidence of the presence of PAHs in urban centers in Chile, local regulatory standards do not consider PAHs in the disposal of WWTP effluents. Monitoring of PAHs in both treated effluents and biosolids is imperative, especially when considering de facto reuse and soil amendment in agricultural activities are currently practiced downstream of the studied WWTP.
Collapse
|
5
|
Hedayati MS, Abida O, Li LY. Adsorption of polycyclic aromatic hydrocarbons by surfactant-modified clinoptilolites for landfill leachate treatment. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 131:503-512. [PMID: 34274862 DOI: 10.1016/j.wasman.2021.06.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 05/10/2021] [Accepted: 06/05/2021] [Indexed: 06/13/2023]
Abstract
The authors report the potential adsorption capacities of three surfactant-modified clinoptilolites (MC)-cetylpyridinium chloride (CPC)-MC, didodecyldimethylammonium bromide (DDAB)-MC, and hexadecyltrimethylammonium bromide (HDTMA)-MC-for the removal of polycyclic aromatic hydrocarbons (PAHs) from aquatic environments and landfill leachate. A liquid-liquid extraction method was used to extract PAHs from water and GC/MS was used to analyse the PAHs. PAH accumulations on CPC-MC, DDAB-MC, and HDTMA-MC were linear over 21 successive batch adsorption tests for anthracene (708, 737, and 750 µg/g), fluoranthene (1355, 1583, and 1303 µg/g), fluorene (973, 1060, and 1147 µg/g), phenanthrene (844, 1057, and 989 µg/g), and pyrene (1343, 1569, and 1269 µg/g). The leachability after 21 successive accumulations was <2% for anthracene, <4% for fluoranthene, <3% for fluorene, <4% for pyrene, and <5% for phenanthrene for each adsorbent. PAH removals from landfill leachate for anthracene, fluoranthene, fluorene, phenanthrene, and pyrene were 97.8%, 98.6%, 95.7%, 97.0%, and 98.5% for CPC-MC and 99.0%, 99.6%, 98.0%, 99.0%, and 99.6% for DDAB-MC, respectively, meeting the fresh water quality standards established by British Columbia and the World Health Organization (WHO) for anthracene, fluoranthene, and fluorene. The molecular weight and molecular structure of PAHs and the hydrophobicity of adsorbents can fundamentally influence the PAH adsorption mechanism based on π-π stacking.
Collapse
Affiliation(s)
- Monireh S Hedayati
- Department of Civil Engineering, University of British Columbia, 6250 Applied Science Lane, Vancouver, British Columbia V6T 1Z4, Canada
| | - Otman Abida
- School of Science and Engineering, Al Akhawayn University in Ifrane, Hassan II avenue, 53000 Ifrane, Morocco
| | - Loretta Y Li
- Department of Civil Engineering, University of British Columbia, 6250 Applied Science Lane, Vancouver, British Columbia V6T 1Z4, Canada.
| |
Collapse
|
6
|
Determination of Polycyclic Aromatic Hydrocarbons and Their Methylated Derivatives in Sewage Sludge from Northeastern China: Occurrence, Profiles and Toxicity Evaluation. Molecules 2021; 26:molecules26092739. [PMID: 34066594 PMCID: PMC8124507 DOI: 10.3390/molecules26092739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/09/2021] [Accepted: 05/03/2021] [Indexed: 11/17/2022] Open
Abstract
This paper assesses the occurrence, distribution, source, and toxicity of polycyclic aromatic hydrocarbons (PAHs), and their methylated form (Me-PAHs) in sewage sludge from 10 WWTPs in Northeastern China was noted. The concentrations of ∑PAHs, ∑Me-PAHs ranged from 567 to 5040 and 48.1 to 479 ng.g−1dw, which is greater than the safety limit for sludge in agriculture in China. High and low molecular weight 4 and 2-ring PAHs and Me-PAHs in sludge were prevalent. The flux of sludge PAHs and Me-PAHs released from ten WWTPs, in Heilongjiang province, was calculated to be over 100 kg/year. Principal component analysis (PCA), diagnostic ratios and positive matrix factorization (PMF) determined a similar mixed pyrogenic and petrogenic source of sewage sludge. The average values of Benzo[a]pyrene was below the safe value of 600 ng.g−1 dependent on an incremental lifetime cancer risk ILCR of 10−6. Sludge is an important source for the transfer of pollutants into the environment, such as PAHs and Me-PAHs. Consequently, greater consideration should be given to its widespread occurrence.
Collapse
|
7
|
Nam G, Mohamed MM, Jung J. Enhanced degradation of benzo[a]pyrene and toxicity reduction by microbubble ozonation. ENVIRONMENTAL TECHNOLOGY 2021; 42:1853-1860. [PMID: 31625815 DOI: 10.1080/09593330.2019.1683077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
The microbubble technique has drawn great attention for efficient utilization of ozone for advance oxidation processes. Therefore, in this study, microbubble ozonation was investigated to evaluate the removal efficiency and toxicity reduction of benzo[a]pyrene. Compared with conventional macrobubble ozonation, microbubble ozonation produced higher concentrations of hydroxyl radicals and ozone in aqueous solutions, resulting in more efficient and persistent degradation of benzo[a]pyrene. Moreover, microbubble ozonation completely removed the acute toxicity of benzo[a]pyrene to Daphnia magna, whereas the toxicity reduction by macrobubble ozonation was not consistent owing possibly to toxic degradation products. These findings suggest that microbubble ozonation is a promising technique in terms of both chemical degradation and toxicity reduction of organic pollutants.
Collapse
Affiliation(s)
- Gwiwoong Nam
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Mohamed M Mohamed
- Civil and Environmental Engineering Department, College of Engineering, United Arab Emirates University, Al Ain, UAE
- National Water Center, United Arab Emirates University, Al Ain, UAE
| | - Jinho Jung
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| |
Collapse
|
8
|
Mohammed R, Zhang ZF, Jiang C, Hu YH, Liu LY, Ma WL, Song WW, Nikolaev A, Kallenborn R, Li YF. Occurrence, Removal, and Mass Balance of Polycyclic Aromatic Hydrocarbons and Their Derivatives in Wastewater Treatment Plants in Northeast China. TOXICS 2021; 9:toxics9040076. [PMID: 33918398 PMCID: PMC8066243 DOI: 10.3390/toxics9040076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 11/16/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAHs), 33 methylated PAHs (Me-PAHs), and 14 nitrated PAHs (NPAHs) were measured in wastewater treatment plants (WWTPs) to study the removal efficiency of these compounds through the WWTPs, as well as their source appointment and potential risk in the effluent. The concentrations of ∑PAHs, ∑Me-PAHs, and ∑NPAHs were 2.01–8.91, 23.0–102, and 6.21–171 µg/L in the influent, and 0.17–1.37, 0.06–0.41 and 0.01–2.41 µg/L in the effluent, respectively. Simple Treat 4.0 and meta-regression methods were applied to calculate the removal efficiencies (REs) for the 63 PAHs and their derivatives in 10 WWTPs and the results were compared with the monitoring data. Overall, the ranges of REs were 55.3–95.4% predicated by the Simple Treat and 47.5–97.7% by the meta-regression. The results by diagnostic ratios and principal component analysis PCA showed that “mixed source” biomass, coal composition, and petroleum could be recognized to either petrogenic or pyrogenic sources. The risk assessment of the effluent was also evaluated, indicating that seven carcinogenic PAHs, Benzo[a]pyrene, Dibenz[a,h]anthracene, and Benzo(a)anthracene were major contributors to the toxics equivalency concentrations (TEQs) in the effluent of WWTPs, to which attention should be paid.
Collapse
Affiliation(s)
- Rashid Mohammed
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
| | - Zi-Feng Zhang
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
- Correspondence: or (Z.-F.Z.); or (Y.-F.L.); Tel.: +86-451-8628-9130 (Z.-F.Z.)
| | - Chao Jiang
- Heilongjiang Institute of Labor Hygiene and Occupational Diseases, Harbin 150028, China; (C.J.); (Y.-H.H.)
| | - Ying-Hua Hu
- Heilongjiang Institute of Labor Hygiene and Occupational Diseases, Harbin 150028, China; (C.J.); (Y.-H.H.)
| | - Li-Yan Liu
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
| | - Wan-Li Ma
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
| | - Wei-Wei Song
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
| | - Anatoly Nikolaev
- Institute of Natural Sciences, North-Eastern Federal University, 677000 Yakutsk, Russia;
| | - Roland Kallenborn
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
- Faculty of Chemistry, Biotechnology & Food Sciences (KBM), Norwegian University of Life Sciences (NMBU), 1432 Ås, Norway
| | - Yi-Fan Li
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (HIT), Harbin 150090, China; (R.M.); (L.-Y.L.); (W.-L.M.); (W.-W.S.); (R.K.)
- International Joint Research Center for Arctic Environment and Ecosystem (IJRC-AEE), Polar Academy, School of Environment, Harbin Institute of Technology (HIT), Harbin 150090, China
- Heilongjiang Provincial Key Laboratory of Polar Environment and Ecosystem (HPKL-PEE), Harbin Institute of Technology (HIT), Harbin 150090, China
- IJRC-PTS-NA, Toronto, ON M2N 6X9, Canada
- Correspondence: or (Z.-F.Z.); or (Y.-F.L.); Tel.: +86-451-8628-9130 (Z.-F.Z.)
| |
Collapse
|
9
|
Muys M, Papini G, Spiller M, Sakarika M, Schwaiger B, Lesueur C, Vermeir P, Vlaeminck SE. Dried aerobic heterotrophic bacteria from treatment of food and beverage effluents: Screening of correlations between operation parameters and microbial protein quality. BIORESOURCE TECHNOLOGY 2020; 307:123242. [PMID: 32248065 DOI: 10.1016/j.biortech.2020.123242] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 03/18/2020] [Accepted: 03/20/2020] [Indexed: 06/11/2023]
Abstract
Consortia of aerobic heterotrophic bacteria (AHB) have potential as sustainable microbial protein (MP) source in animal feed. A systematic screening of the nutritional value and safety of AHB biomass from full-scale activated sludge plants from 25 companies in the food sector was performed. The variable protein content (21-49%) was positively correlated with biomass-specific nitrogen loading rate and negatively with sludge retention time (SRT). Compared to the essential amino acid profile of soybean meal protein, AHB displayed an overall surplus of threonine and valine, and deficits in cysteine, histidine, lysine and phenylalanine. Histidine was positively correlated with bCOD/PO43- in the influent and valine, isoleucine and threonine with SRT. Most AHB samples were safe apropos heavy metals, polycyclic aromatic hydrocarbons and antibiotics. Some pesticides exceeded regulatory limits, necessitating mitigation. This work highlighted that the food sector can provide high-quality MP, while retrofitting existing activated sludge plants towards high-rate processes can increase AHB quality and productivity.
Collapse
Affiliation(s)
- Maarten Muys
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, België, Belgium
| | - Gustavo Papini
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, België, Belgium
| | - Marc Spiller
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, België, Belgium
| | - Myrsini Sakarika
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, België, Belgium
| | - Barbara Schwaiger
- Lebensmittel Vertrauen Analysen LVA GmbH, Magdeburggasse 10, 3400 Klosterneuburg 236286 f, HG Wien, Oostenrijk, Austria
| | - Céline Lesueur
- Lebensmittel Vertrauen Analysen LVA GmbH, Magdeburggasse 10, 3400 Klosterneuburg 236286 f, HG Wien, Oostenrijk, Austria
| | - Pieter Vermeir
- Laboratory for Chemical Analysis, Department of Green Chemistry and Technology, Ghent University, Valentin Vaerwyckweg 1, 9000 Gent, België, Belgium
| | - Siegfried E Vlaeminck
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, België, Belgium.
| |
Collapse
|
10
|
Chen J, Liao J, Wei C. Coking wastewater treatment plant as a sources of polycyclic aromatic hydrocarbons (PAHs) in sediments and ecological risk assessment. Sci Rep 2020; 10:7833. [PMID: 32398695 PMCID: PMC7217903 DOI: 10.1038/s41598-020-64835-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 04/22/2020] [Indexed: 11/24/2022] Open
Abstract
The spatial and temporal distribution of polycyclic aromatic hydrocarbons (PAHs) was investigated in sediments of Maba River, a major tributary of Beijiang River (South China). A total of 13 samples from Maba River and its tributary, Meihua River, were analyzed for 16 PAHs. The total concentration of 16 PAHs (ΣPAH) in high and low water period ranged between 47.61 to 25480.98 ng g-1, with a mean concentration of 4382.98 ng g-1, and 60.30 to 15956.62 ng g-1 with a mean concentration of 3664.32 ng g-1, respectively. Three-ring and four-ring PAHs were the dominant species. It was concluded that a pattern of pyrolytic input as a major source of PAHs in sediments through the molecular ratio method for the source identification, such as HMW/LMW PAHs, Flu/(Flu+Pyr), IcdP/(IcdP+BghiP) and BaA/(BaA+Chr). It is suggested that the pollution emission from the iron and steel plant might be the most important sources of PAHs into Maba River water system. The threat of PAHs contamination to biota of the river was assessed using effect range low (ERL) and effect range median (ERM) values, which suggested that PAHs in Maba River and its tributary had already caused ecological risks.
Collapse
Affiliation(s)
- Jundong Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, P.R. China
| | - Jianbo Liao
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, P.R. China.
| |
Collapse
|
11
|
Samokhvalov A. Analysis of various solid samples by synchronous fluorescence spectroscopy and related methods: A review. Talanta 2020; 216:120944. [PMID: 32456909 DOI: 10.1016/j.talanta.2020.120944] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/12/2020] [Accepted: 03/16/2020] [Indexed: 11/27/2022]
Abstract
This critical Review covers the literature reports on analysis of different types of solid samples by the synchronous fluorescence spectroscopy (SFS) and its varieties, which include synchronous phosphorescence spectroscopy and synchronous luminescence spectroscopy, in the three decades (1990-2019). Both the qualitative and quantitative spectroscopic analysis is described for a wide range of specimens. Their physical forms and chemical composition include: a) organic and inorganic analytes pre-concentrated from solution on matrices (beads, membranes, filters, disks, paper), b) natural and synthetic multi-component specimens of complex composition (biological tissues, soil, polymers) and c) inorganic and coordination compounds including porous materials and particularly metal-organic frameworks (MOFs). The comparison with the data obtained by "conventional" optical emission spectroscopy and other analytical techniques (when available) is presented. The specific advantages of the high-resolution varieties of the method, the first- and second-derivative solid-state synchronous fluorescence, luminescence, and phosphorescence spectroscopy are described. An attention is also paid to practical conditions of the typical tests, and the relevant experimental setups. The impetus is on the emerging capabilities of this highly promising method e.g. in-situ monitoring of chemical reactions, in-vivo diagnostics, surface reactions, and detection of the adsorbate. The existing challenges are analyzed, and the unexplored application "niches" to further develop this and the related analytical methods are revealed. 145 references, 9 Tables, 17 Figures and 1 Scheme.
Collapse
Affiliation(s)
- Alexander Samokhvalov
- Department of Chemistry, Morgan State University, 1700 East Cold Spring Lane, Baltimore, MD, 21251, USA.
| |
Collapse
|
12
|
Liu Z, Deng M, Wu Q, Kuo DTF, Zeng L, Wang Z, Zhang Y, Liu X, Liu S, Liang J, Hu X, Mai B. Occurrence, seasonal variation and environmental impact of phosphorus flame retardants in a large scale wastewater treatment plant. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:36333-36342. [PMID: 31713826 DOI: 10.1007/s11356-019-06670-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
The occurrence, seasonal variation and emission of nine widely used phosphorus flame retardants (PFRs) were investigated in a wastewater treatment plant (WWTP) located in Guangzhou, China, over 1 year. Results showed that PFRs were widely detected in wastewater and sewage sludge. Tris(2-chloroisopropyl) phosphate (TCIPP) was the most dominant PFRs in influent, effluent, and sludge. Significant seasonal variation of total PFRs in the influent was observed (p < 0.05). However, no significant seasonal variation found in chlorinated and alkyl PFRs. The emission of PFRs was comparable with the previously reported values of decabromodiphenyl ether in WWTPs. Risk quotient for PFRs showed low eco-toxicity risk in effluent for aquatic organisms. Since the removal efficiency of total PFRs was less than 30% and the use of PFRs had been increasing, continuous monitoring of the environmental impact on the receiving water is still needed.
Collapse
Affiliation(s)
- Zhineng Liu
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Mingjun Deng
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Qihang Wu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China.
- Rural Non-point Source Pollution Comprehensive Management Technology Center of Guangdong Province, Guangzhou University, Guangzhou, 510006, China.
| | - Dave T F Kuo
- Department of Architecture and Civil Engineering, Hong Kong Special Administrative Region, City University of Hong Kong, Kowloon Tong, Hong Kong
- Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China
| | - Lixi Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 510632, China
| | - Zhu Wang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou, 510006, China
- Rural Non-point Source Pollution Comprehensive Management Technology Center of Guangdong Province, Guangzhou University, Guangzhou, 510006, China
| | - Ying Zhang
- Monitoring and Research Center for Eco-Environmental Sciences, Ecology and Environment Administration of Pearl River Valley and South China Sea, Ministry of Ecology and Environment, Guangzhou, 510611, China
| | - Xinyu Liu
- Monitoring Centre of Pearl River Valley Aquatic Environment, Guangzhou, 510611, China
| | - Shengyu Liu
- Monitoring Centre of Pearl River Valley Aquatic Environment, Guangzhou, 510611, China
| | - Junyan Liang
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Xiaodong Hu
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Bixian Mai
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| |
Collapse
|
13
|
Mozo I, Bounouba M, Mengelle E, Lesage N, Sperandio M, Bessiere Y. Modelling PAHs removal in activated sludge process: effect of disintegration. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:794-805. [PMID: 31661458 DOI: 10.2166/wst.2019.322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The removal of polycyclic aromatic hydrocarbons (PAHs) in activated sludge was evaluated using two laboratory-scale bioreactors, coupled or not with a disintegration system (sonication). Mass balances performed on each system underlined that PAHs removal was significantly improved after sludge disintegration, especially for the higher molecular weight PAHs studied, which tended to adsorb to suspended matter. A model was developed in order to study the effect of sludge disintegration on the content of dissolved and colloidal matter (DCM), and to predict the potential impacts on PAHs availability and degradation. Results showed that this new model was efficient for capturing apparent degradation improvement trends and for discriminating between the involved mechanisms. This study showed that DCM content increased after sludge disintegration, and proved to be the main driver for improving PAHs apparent degradation.
Collapse
Affiliation(s)
- I Mozo
- LISBP, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France E-mail: ; TOTAL SA - CSTJF, Avenue Larribau, 64000 Pau, France
| | - M Bounouba
- LISBP, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France E-mail:
| | - E Mengelle
- LISBP, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France E-mail:
| | - N Lesage
- TOTAL SA - CSTJF, Avenue Larribau, 64000 Pau, France
| | - M Sperandio
- LISBP, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France E-mail:
| | - Y Bessiere
- LISBP, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France E-mail:
| |
Collapse
|
14
|
Berardi C, Fibbi D, Coppini E, Renai L, Caprini C, Scordo CVA, Checchini L, Orlandini S, Bruzzoniti MC, Del Bubba M. Removal efficiency and mass balance of polycyclic aromatic hydrocarbons, phthalates, ethoxylated alkylphenols and alkylphenols in a mixed textile-domestic wastewater treatment plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 674:36-48. [PMID: 31003086 DOI: 10.1016/j.scitotenv.2019.04.096] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/02/2019] [Accepted: 04/07/2019] [Indexed: 06/09/2023]
Abstract
In this work the occurrence and fate of polycyclic aromatic hydrocarbons (PAHs), phthalic acid esters (PAEs), mono and diethoxylate alkylphenols (AP1-2EOs) and alkylphenols (APs) have been investigated during a two-weeks period in a facility treating mixed textile-domestic wastewater (Prato, Italy). The wastewater treatment plant (WWTP) consists of primary sedimentation, activated sludge biological oxidation, secondary sedimentation, clariflocculation and ozonation. The sludge is treated within the facility by thickening, dewatering and final incineration, thus providing the almost quantitative removal of the adsorbed micropollutants. Naphthalene (50%), di(2-ethylhexyl) phthalate (74%) and branched 4-nonylphenols (59%) were the individual main representative compounds of each class in the influent wastewater, which showed concentration ranges of 5.6-66, 85-290 and 21-133μg/L for PAHs, PAEs and APs+AP1-2EOs, respectively. The WWTP efficiently removed PAHs, PAEs and APs+AP1-2EOs, providing effluent concentrations of 0.075-0.16ng/L 0.38-9.9μg/L and 0.53-1.4μg/L. All targeted priority and priority-hazardous micropollutants showed effluent concentrations in line with the European environmental quality standards (EQS), even though for di(2-ethylhexyl) phthalate and benzo(a)pyrene after correction for the dilution factor of the recipient. The WWTP performance was evaluated by mass balance, verifying its accuracy by monitoring Pb and Cd as conservative species. The biological treatment sections provided mass losses of 85.5%, 74.5% and 56.8% for APs+AP1-2EOs, PAEs and PAHs, highlighting efficient biotransformation performances of the activated sludge process. However, for the more volatile PAHs (e.g. naphthalene), a significant contribution of stripping cannot be excluded. A remarkable mass loss was also determined in the ozonation stage for PAEs (72.9%) and especially PAHs (97.0%), whereas a lower efficiency was observed for APs+AP1-2EOs (41.3%). The whole plant allowed for obtaining an almost quantitative removal (96.7-98.4%) for all targeted compounds.
Collapse
Affiliation(s)
- Chiara Berardi
- GIDA S.p.A., Via di Baciacavallo 36, 59100 Prato, Italy.
| | | | - Ester Coppini
- GIDA S.p.A., Via di Baciacavallo 36, 59100 Prato, Italy.
| | - Lapo Renai
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy.
| | - Claudia Caprini
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy.
| | | | - Leonardo Checchini
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy.
| | - Serena Orlandini
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy.
| | | | - Massimo Del Bubba
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy.
| |
Collapse
|
15
|
Ahmad M, Eskicioglu C. Fate of sterols, polycyclic aromatic hydrocarbons, pharmaceuticals, ammonia and solids in single-stage anaerobic and sequential anaerobic/aerobic/anoxic sludge digestion. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 93:72-82. [PMID: 31235059 DOI: 10.1016/j.wasman.2019.05.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 03/14/2019] [Accepted: 05/12/2019] [Indexed: 06/09/2023]
Abstract
Emerging contaminants (ECs), such as pharmaceuticals, sterols and polycyclic aromatic hydrocarbons (PAHs) are frequently detected in the environment. ECs are refractory, toxic, tend to bioaccumulate and have a potential to disrupt the endocrine system of living organisms. These compounds are only partially eliminated in wastewater treatment plants (WWTPs). Due to their hydrophobic nature, they tend to accumulate in sludge. However, the fate of the majority of ECs in sludge treatment processes is not fully understood. In this study, the effect of a sequential anaerobic/aerobic/anoxic (AN/AERO/ANOX) digestion and a conventional single-stage AN digestion (as control) was investigated on mixed primary and secondary sludge. Digesters were operated at an overall solid retention time (SRT) of 18 days. The steady-state results have shown that sequential AN/AERO/ANOX digestion configurations improved the removal of three classes of ECs (e.g., sterols, PAHs and pharmaceuticals) by either reducing their accumulation or enhancing their removal. Moreover, sequential AN/AERO/ANOX digestion also achieved 45% less ammonia generation, 20% faster digestate dewaterability and 4% enhanced volatile solids removal compared to single-stage AN digestion.
Collapse
Affiliation(s)
- M Ahmad
- UBC Bioreactor Technology Group, School of Engineering, University of British Columbia, Okanagan Campus, 1137 Alumni Ave., Kelowna, BC V1V 1V7, Canada.
| | - C Eskicioglu
- UBC Bioreactor Technology Group, School of Engineering, University of British Columbia, Okanagan Campus, 1137 Alumni Ave., Kelowna, BC V1V 1V7, Canada.
| |
Collapse
|
16
|
TiO₂-Based Hybrid Nanocomposites Modified by Phosphonate Molecules as Selective PAH Adsorbents. Molecules 2018; 23:molecules23113046. [PMID: 30469386 PMCID: PMC6278484 DOI: 10.3390/molecules23113046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/11/2018] [Accepted: 11/17/2018] [Indexed: 12/01/2022] Open
Abstract
A robust sol-gel process was developed for the synthesis of surface-functionalized titania nanocrystallites bearing unsaturated groups starting from molecular heteroleptic single-source precursors. Molecules and nanomaterials were thoroughly characterized by multinuclear liquid and solid-state nuclear magnetic resonance (NMR), infra-red (FT-IR, DRIFT) spectroscopies. Nitrogen adsorption-desorption (BET), thermogravimetric (TG) and elemental analyses demonstrated the reliability and the fine tuning of the surface functionalization in terms of ratio TiO2:ligand. The as-prepared materials were used as nano-adsorbents to remove mixture of 16 polycyclic aromatic hydrocarbon (PAHs) from aqueous solutions. Adsorption kinetic experiments were carried out for 24 h in solutions of one PAH [benzo(a)pyrene, 220 ppb] and of a mixture of sixteen ones [220 ppb for each PAH]. Most kinetic data best fitted the pseudo-second order model. However, in PAHs mixture, a competition process took place during the first hours leading to a remarkable high selectivity between light and heavy PAHs. This selectivity could be fine-tuned depending on the nature of the unsaturated group of the phosphonate framework and on the nanomaterial textures.
Collapse
|
17
|
Vystavna Y, Frkova Z, Celle-Jeanton H, Diadin D, Huneau F, Steinmann M, Crini N, Loup C. Priority substances and emerging pollutants in urban rivers in Ukraine: Occurrence, fluxes and loading to transboundary European Union watersheds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:1358-1362. [PMID: 29801228 DOI: 10.1016/j.scitotenv.2018.05.095] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/05/2018] [Accepted: 05/07/2018] [Indexed: 05/20/2023]
Abstract
The occurrence and fluxes of 18 priority substances and emerging pollutants listed in the European Union Water Framework Directive and a Watch List (trace metals (Cd, Pb and Ni), nonylphenols, octylphenols, 8 polyaromatic hydrocarbons, 4 dioxin-like polychlorinated biphenyls and diclofenac) were investigated in a Ukrainian city and the mass discharge loads of these compounds into EU-transboundary watersheds were estimated. Fluxes of chemicals were calculated per capita and per area of the Ukrainian urban territory and used to estimate mass loading of priority and emerging concern compounds from Lviv, Uzhorod and Chernivtsi (West Ukraine) to neighbouring EU-transboundary rivers. The highest loading was found for trace metals (1.15 t a-1), diclofenac (0.7 t a-1) and nonylphenols (0.4 t a-1). Transboundary water contamination must be considered in order to successfully manage water resources in a manner that fulfils the requirements of EU environmental quality standards.
Collapse
Affiliation(s)
- Y Vystavna
- Biology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic; Department of Environmental Engineering and Management, O.M. Beketov National University of Urban Economy in Kharkiv, 17, Marshal Bazhanov Street, Kharkiv 61002, Ukraine.
| | - Z Frkova
- Biology Centre of the Czech Academy of Sciences, Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic; Biology Centre of the Czech Academy of Sciences, Institute of Soil Biology, Na Sádkách 7, 37005 České Budějovice, Czech Republic.
| | - H Celle-Jeanton
- Université Bourgogne Franche-Comté, Laboratoire Chrono-Environnement, CNRS, UMR 6249, 16 route de Gray, F-25030 Besançon, France.
| | - D Diadin
- Department of Environmental Engineering and Management, O.M. Beketov National University of Urban Economy in Kharkiv, 17, Marshal Bazhanov Street, Kharkiv 61002, Ukraine
| | - F Huneau
- Université de Corse Pascal Paoli, Laboratoire d'Hydrogéologie, Campus Grimaldi, BP 52, F-20250 Corte, France; CNRS, UMR 6134 SPE, BP 52, F-20250 Corte, France.
| | - M Steinmann
- Université Bourgogne Franche-Comté, Laboratoire Chrono-Environnement, CNRS, UMR 6249, 16 route de Gray, F-25030 Besançon, France.
| | - N Crini
- Université Bourgogne Franche-Comté, Laboratoire Chrono-Environnement, CNRS, UMR 6249, 16 route de Gray, F-25030 Besançon, France.
| | - C Loup
- Université Bourgogne Franche-Comté, Laboratoire Chrono-Environnement, CNRS, UMR 6249, 16 route de Gray, F-25030 Besançon, France.
| |
Collapse
|
18
|
Zhao W, Sui Q, Huang X. Removal and fate of polycyclic aromatic hydrocarbons in a hybrid anaerobic-anoxic-oxic process for highly toxic coke wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:716-724. [PMID: 29680762 DOI: 10.1016/j.scitotenv.2018.04.162] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/26/2018] [Accepted: 04/11/2018] [Indexed: 06/08/2023]
Abstract
Elimination of polycyclic aromatic hydrocarbons (PAHs) from coke wastewater is crucial to minimize the PAHs contamination levels to the environment. Knowledge about the characteristics of PAHs removal in biological treatment processes, especially hybrid systems, for real coke wastewater treatment has been very scarce. In this study, a lab-scale hybrid anaerobic-anoxic-oxic (A1/A2/O) process was used to treat highly toxic coke wastewater and operated more than 600 d at total hydraulic retention time (HRT) of 50 h, 40 h, 30 h, 20 h and internal mixed liquor recirculation ratio (R) of 3, 6, 9. Removal performance and behaviors of priority PAHs in the hybrid A1/A2/O system were investigated. The results showed that the appropriate total HRT and R from oxic reactor to anoxic reactor for organics and nitrogen removal was 40 h and 3, respectively. The concentrations of total PAHs were very high (254-488 μg/L) in the raw coke wastewater, and effectively reduced to 4.1-4.5 μg/L in the final effluent by the present system under the optimized operational conditions. Among the three treatment units, anoxic reactor made the largest contribution to the total PAHs removal. Large amounts of PAHs (415-1310 μg/g) were adsorbed to the activated sludge in the anoxic and oxic reactor, leading to a much higher load of PAHs (2535 μg/d) in the excess sludge than that in the treated coke wastewater (93 μg/d) at SRT 60 d. Therefore, the excess sludge was identified as the major emission source of PAHs in coke wastewater during the hybrid A1/A2/O process, and might pose an environmental risk if the excess sludge was not properly treated and disposed.
Collapse
Affiliation(s)
- Wentao Zhao
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092,China.
| | - Qian Sui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China
| |
Collapse
|
19
|
Sjoeholm KK, Schmidt SN, Jahnke A, Svensmark B, Mayer P. Equilibrium sampling reveals increasing thermodynamic potential of polycyclic aromatic hydrocarbons during sewage sludge digestion. CHEMOSPHERE 2018; 207:421-429. [PMID: 29807341 DOI: 10.1016/j.chemosphere.2018.05.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 05/07/2018] [Accepted: 05/18/2018] [Indexed: 06/08/2023]
Abstract
The reuse of digested sludge from wastewater treatment plants (WWTPs) as soil fertilizer poses a risk for contamination of soil and water environments. The present study provides a new approach for investigating the exposure of hydrophobic organic chemicals in sewage sludge. The methodology of equilibrium sampling with multiple thicknesses of silicone was successfully validated and applied to complex sludge matrices. Polycyclic aromatic hydrocarbon (PAH) concentrations in silicone (Csilicone) were determined and compared across four WWTPs. Activity ratios (ARs), defined as Csilicone at equilibrium with digested sludge (final product) over Csilicone at equilibrium with secondary sludge (intermediate product), were in the range 0.85-20 with all except one AR>1. These ARs thus revealed increased thermodynamic potential of both parent and alkylated PAHs in digested sludge compared with secondary sludge, and thereby higher exposure of PAHs in sludge after digestion than before digestion. This observation can be explained by the concept of "solvent depletion" as organic matter decreased by a factor of 1.3 during digestion, resulting in reduced sorptive capacity and increased freely dissolved concentrations (Cfree). The PAHs with logKow > 6 had ARs close to 1.3, whereas PAHs with logKow < 6 showed higher ARs than the organic matter decrease factor of 1.3. Cfree in digested sludge were higher than reported in rural soil and generally consistent with levels reported for Baltic Sea sediment.
Collapse
Affiliation(s)
- Karina K Sjoeholm
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet B115, DK-2800, Kgs, Lyngby, Denmark; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg, Denmark.
| | - Stine N Schmidt
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet B115, DK-2800, Kgs, Lyngby, Denmark; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg, Denmark.
| | - Annika Jahnke
- Department of Cell Toxicology, Helmholtz Center for Environmental Research GmbH - UFZ, Permoserstraβe 15, DE-04318, Leipzig, Germany.
| | - Bo Svensmark
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg, Denmark.
| | - Philipp Mayer
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet B115, DK-2800, Kgs, Lyngby, Denmark.
| |
Collapse
|
20
|
Kong Q, Wu H, Liu L, Zhang F, Preis S, Zhu S, Wei C. Solubilization of polycyclic aromatic hydrocarbons (PAHs) with phenol in coking wastewater treatment system: Interaction and engineering significance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 628-629:467-473. [PMID: 29453175 DOI: 10.1016/j.scitotenv.2018.02.077] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 02/02/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are accumulated in the sludge collected from the coking wastewater treatment. Phenol with its efficient degradation observed in biological treatment promotes the solubility of PAHs in aqueous phase. The interaction mechanism of phenol and PAHs in aqueous and sludge phases was systematically studied in two full-scale engineering projects composed of anaerobic-oxic-oxic (A-O1-O2) and anaerobic-oxic-hydrolytic-oxic (A-O1-H-O2) sequences. The results showed that reasonable use of phenol facilitates solubilization of PAHs alleviating their emission problems. The ΔPAHs/Δphenol mass ratio in the sludge phase of A-O1-H-O2 system (146.3) exceeded that in A-O1-O2 one (63.80), exhibiting a good solubilization effect on PAHs with their more efficient degradation in the former. The full-scale observations were verified in laboratory solubilization experiments using phenanthrene (Phen), pyrene (Pyr) and benzo[a]pyrene (Bap) as the models of 3-, 4- and 5-ring PAHs, respectively. The binding energies of [phenol-PAHs] complexes were calculated using computational density functional theory showing consistency with the experimentally observed phenol-facilitated solubilization efficiencies in the row of Phen>Pyr>Bap. The results showed the fate and distribution of PAHs in coking wastewater treatment affected by the presence of phenol serving as a cost effective reagent for enhanced solubilization of PAHs from the coking wastewater sludge.
Collapse
Affiliation(s)
- Qiaoping Kong
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China; School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Haizhen Wu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China.
| | - Lei Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Fengzhen Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Sergei Preis
- Department of Materials and Environmental Technology, Tallinn University of Technology, Tallinn 19086, Estonia
| | - Shuang Zhu
- School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| |
Collapse
|
21
|
Blanco-Enríquez EG, Zavala-Díaz de la Serna FJ, Peralta-Pérez MDR, Ballinas-Casarrubias L, Salmerón I, Rubio-Arias H, Rocha-Gutiérrez BA. Characterization of a Microbial Consortium for the Bioremoval of Polycyclic Aromatic Hydrocarbons (PAHs) in Water. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E975. [PMID: 29757264 PMCID: PMC5982014 DOI: 10.3390/ijerph15050975] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/28/2018] [Accepted: 05/09/2018] [Indexed: 11/24/2022]
Abstract
Pollution of freshwater ecosystems from polycyclic aromatic hydrocarbons (PAHs) is a global concern. The US Environmental Protection Agency (EPA) has included the PAHs pyrene, phenanthrene, and naphthalene among the 16 priority compounds of special concern for their toxicological effects. The aim of this study was to adapt and characterize a microbial consortium from ore waste with the potential to remove these three PAHs from water. This microbial consortium was exposed to the target PAHs at levels of 5, 10, 20, 50, and 100 mg L−1 for 14 days. PAH bioremoval was measured using the analytical technique of solid phase microextraction, followed by gas chromatography mass spectrometry (SPME-GC/MS). The results revealed that up to 90% of the target PAHs can be removed from water after 14 days at a concentration level of 100 mg L−1. The predominant group of microorganisms identified at the phylum taxonomic level were the Proteobacteria, while the Actinobacteria were the predominant subgroup. The removal of phenanthrene, naphthalene, and pyrene predominantly occurred in specimens of genera Stenotrophomonas, Williamsia, and Chitinophagaceae, respectively. This study demonstrates that the use of specific microorganisms is an alternative method of reducing PAH levels in water.
Collapse
Affiliation(s)
- Esmeralda G Blanco-Enríquez
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Campus Universitario #2, Circuito Universitario, Chihuahua, Chihuahua C.P. 31125, México.
| | | | - María Del Rosario Peralta-Pérez
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Campus Universitario #2, Circuito Universitario, Chihuahua, Chihuahua C.P. 31125, México.
| | - Lourdes Ballinas-Casarrubias
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Campus Universitario #2, Circuito Universitario, Chihuahua, Chihuahua C.P. 31125, México.
| | - Iván Salmerón
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Campus Universitario #2, Circuito Universitario, Chihuahua, Chihuahua C.P. 31125, México.
| | - Héctor Rubio-Arias
- Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Periférico. R. Almada, Km.1. Chihuahua, Chihuahua C.P. 31453, México.
| | - Beatriz A Rocha-Gutiérrez
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Campus Universitario #2, Circuito Universitario, Chihuahua, Chihuahua C.P. 31125, México.
| |
Collapse
|