1
|
Wang Y, Zhao J, Fu Z, Guan D, Zhang D, Zhang H, Zhang Q, Xie J, Sun Y, Wang D. Innovative overview of the occurrence, aging characteristics, and ecological toxicity of microplastics in environmental media. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123623. [PMID: 38387545 DOI: 10.1016/j.envpol.2024.123623] [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: 11/17/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
Microplastics (MPs), pollutants detected at high frequency in the environment, can be served as carriers of many kinds of pollutants and have typical characteristics of environmental persistence and bioaccumulation. The potential risks of MPs ecological environment and health have been widely concerned by scholars and engineering practitioners. Previous reviews mostly focused on the pollution characteristics and ecological toxicity of MPs, but there were few reviews on MPs analysis methods, aging mechanisms and removal strategies. To address this issue, this review first summarizes the contamination characteristics of MPs in different environmental media, and then focuses on analyzing the detection methods and analyzing the aging mechanisms of MPs, which include physical aging and chemical aging. Further, the ecotoxicity of MPs to different organisms and the associated enhanced removal strategies are outlined. Finally, some unresolved research questions related to MPs are prospected. This review focuses on the ageing and ecotoxic behaviour of MPs and provides some theoretical references for the potential environmental risks of MPs and their deep control.
Collapse
Affiliation(s)
- Yuxin Wang
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Jianwei Zhao
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China.
| | - Zhou Fu
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Dezheng Guan
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Dalei Zhang
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Hongying Zhang
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Qi Zhang
- Qingdao Jiebao Ecological Technology Co., Ltd., Qingdao, 266000, PR China
| | - Jingliang Xie
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Yingjie Sun
- Qingdao Solid Waste Pollution Control and Recycling Engineering Research Center, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, 266520, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
| |
Collapse
|
2
|
Hancock TL, Dahedl EK, Kratz MA, Urakawa H. Synechococcus dominance induced after hydrogen peroxide treatment of Microcystis bloom in the Caloosahatchee River, Florida. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 345:123508. [PMID: 38325511 DOI: 10.1016/j.envpol.2024.123508] [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: 12/22/2023] [Revised: 01/25/2024] [Accepted: 02/04/2024] [Indexed: 02/09/2024]
Abstract
Few field trials examining hydrogen peroxide as a cyanobacterial harmful algal bloom (cHAB) treatment have been conducted in subtropical and tropical regions. None have been tested in Florida, home to Lake Okeechobee and downstream waterways which periodically experience Microcystis bloom events. To investigate treatment effects in Florida, we applied a 490 μM (16.7 mg/L; 0.0015%) hydrogen peroxide spray to a minor bloom of Microcystis aeruginosa on the downstream side of Franklin Lock and Dam in the Caloosahatchee River. Although hydrogen peroxide decreased to background level one day post-treatment, succession was observed in phytoplankton community amplicon sequencing. The relative abundance of Microcystis decreased on day 3 by 86%, whereas the picocyanobacteria Synechococcus became dominant, increasing by 77% on day 3 and by 173% on day 14 to 57% of the phytoplankton community. Metatranscriptomics revealed Synechococcus likely benefitted from the antioxidant defense of upregulated peroxiredoxin, peroxidase/catalase, and rubrerythrin expressions immediately after treatment, and upregulated nitrate transport and urease to take advantage of available nitrogen. Our results indicated hydrogen peroxide induces succession of the phytoplankton community from Microcystis to non-toxic picocyanobacteria and could be used for selective suppression of harmful cyanobacteria.
Collapse
Affiliation(s)
- Taylor L Hancock
- School of Geosciences, University of South Florida, Tampa, FL, 33620, USA; Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, USA
| | - Elizabeth K Dahedl
- Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, USA
| | - Michael A Kratz
- Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, USA
| | - Hidetoshi Urakawa
- School of Geosciences, University of South Florida, Tampa, FL, 33620, USA; Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, USA.
| |
Collapse
|
3
|
Hancock TL, Dahedl EK, Kratz MA, Urakawa H. Bacterial community shifts induced by high concentration hydrogen peroxide treatment of Microcystis bloom in a mesocosm study. HARMFUL ALGAE 2024; 133:102587. [PMID: 38485437 DOI: 10.1016/j.hal.2024.102587] [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: 09/11/2023] [Revised: 12/18/2023] [Accepted: 01/30/2024] [Indexed: 03/19/2024]
Abstract
Hydrogen peroxide has gained popularity as an environmentally friendly treatment for cyanobacterial harmful algal blooms (cHABs) that takes advantage of oxidative stress sensitivity in cyanobacteria at controlled concentrations. Higher concentrations of hydrogen peroxide treatments may seem appealing for more severe cHABs but there is currently little understanding of the environmental impacts of this approach. Of specific concern is the associated microbial community, which may play key roles in the succession/recovery process post-treatment. To better understand impacts of a high concentration treatment on non-target microbial communities, we applied a hydrogen peroxide spray equating to a total volume concentration of 14 mM (473 mg/L, 0.04%) to 250 L mesocosms containing Microcystis bloom biomass, monitoring treatment and control mesocosms for 4 days. Cyanobacteria dominated control mesocosms throughout the experiment while treatment mesocosms experienced a 99% reduction, as determined by bacterial amplicon sequencing, and a 92% reduction in bacterial cell density within 1 day post-treatment. Only the bacterial community exhibited signs of regrowth, with a fold change of 9.2 bacterial cell density from day 1 to day 2. Recovery consisted of succession by Planctomycetota (47%) and Gammaproteobacteria (17%), which were likely resilient due to passive cell component compartmentalization and rapid upregulation of dnaK and groEL oxidative stress genes, respectively. The altered microbiome retained beneficial functionality of microcystin degradation through a currently recognized but unidentified pathway in Gammaproteobacteria, resulting in a 70% reduction coinciding with bacterial regrowth. There was also an 81% reduction of both total nitrogen and phosphorus, as compared to 91 and 93% in the control, respectively, due to high expressions of genes related to nitrogen (argH, carB, glts, glnA) and phosphorus (pntAB, phoB, pstSCB) cycling. Overall, we found a portion of the bacterial community was resilient to the high-concentration hydrogen peroxide treatment, resulting in Planctomycetota and Gammaproteobacteria dominance. This high-concentration treatment may be suitable to rapidly end cHABs which have already negatively impacted the aquatic environment rather than allow them to persist.
Collapse
Affiliation(s)
- Taylor L Hancock
- School of Geosciences, University of South Florida, Tampa, FL 33620, United States; Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, United States
| | - Elizabeth K Dahedl
- Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, United States
| | - Michael A Kratz
- Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, United States
| | - Hidetoshi Urakawa
- School of Geosciences, University of South Florida, Tampa, FL 33620, United States; Department of Ecology and Environmental Studies, Florida Gulf Coast University, Fort Myers, FL, United States.
| |
Collapse
|
4
|
Chen X, Hu S, Chen X, Cheng H, Wu C. Influence of different cyanobacterial treatment methods on phosphorus cycle in shallow lake microcosms. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120245. [PMID: 38368799 DOI: 10.1016/j.jenvman.2024.120245] [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: 09/18/2023] [Revised: 01/04/2024] [Accepted: 01/27/2024] [Indexed: 02/20/2024]
Abstract
Cyanobacterial bloom is a pressing issue affecting water supply security and ecosystem health. Phosphorus (P) released from cyanobacterial bloom during recession is one of the most important components involved in the lake P cycle. However, little is known about the consequences and mechanisms of the P cycle in overlying water and sediment due to the anthropogenic treatments of cyanobacterial blooms. In this study, treatment methods using hydrogen peroxide (H2O2), polyaluminum chloride (PAC), and the feces of silver carp were investigated for their influence on the P cycle using microcosm experiments. Results showed that H2O2 treatment significantly increased the internal cycle of sediment-related P, while PAC treatment showed minor effects. H2O2 and PAC treatment suppressed the release of P from sediment before day 10 but promoted the release of P on day 20, while silver carp treatment suppressed the release of P during the whole experiment. The reductive dissolution of iron oxide-hydroxide was the major factor affects the desorption of P. Path analyses further suggested that overlying water properties such as dissolved oxygen (DO) and oxidation-reduction potential (ORP) play critical roles in the treatment-induced sediment P release. Our results quantify the endogenous P diffusion fluxes across the sediment-water interface attributed to cyanobacterial treatments and provide useful guidance for the selection of controlling methods, with silver carp being the most recommended of the three methods studied.
Collapse
Affiliation(s)
- Xin Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Shenghua Hu
- Wuhan Municipal Construction Group Co., Ltd., Wuhan, 430023, China
| | - Xiaofei Chen
- Hubei Academy of Environmental Sciences, Wuhan, 430072, China
| | - Huaqiang Cheng
- Wuhan Municipal Construction Group Co., Ltd., Wuhan, 430023, China
| | - Chenxi Wu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| |
Collapse
|
5
|
Xu Y, Ding J, Zhang C, Zhao M, Zhu S, Rao G, Zhang W, Zhang Z, Ma J. A precise method to monitor hydroxyl radical in natural waters based on a fluoride-containing fluorescence probe. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166961. [PMID: 37696402 DOI: 10.1016/j.scitotenv.2023.166961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Abstract
In natural waters, hydroxyl radical (OH) can initiate many free radical-induced reactions, oxidizing various inorganic and organic compounds through electron transfer reactions, dehydrogenation reactions, addition reactions, and self-quenching reactions. However, due to its extremely low concentration and short lifetime in natural waters, studies on the quantitative measurement of OH levels are insufficient. In this work, we developed the first quinolinium-based fluorescence probe containing fluoride substituted donor that could detect hydroxyl radicals in the water system. This probe exhibits excellent selectivity towards OH with a large Stokes shift (114 nm) and 23-fold enhancement in fluorescence. Additionally, this probe has been proven to be low toxicity and applied to detect OH in living cells, zebrafish, and natural water samples with good recovery (over 92 %).
Collapse
Affiliation(s)
- Yaoyu Xu
- Henan Provincial Research Center for Precise Synthesis of Fluorine-Containing Drugs, Anyang Normal University, Anyang, Henan 455000, China
| | - Jiaying Ding
- Henan Provincial Research Center for Precise Synthesis of Fluorine-Containing Drugs, Anyang Normal University, Anyang, Henan 455000, China
| | - Chengjie Zhang
- Henan Provincial Research Center for Precise Synthesis of Fluorine-Containing Drugs, Anyang Normal University, Anyang, Henan 455000, China
| | - Mingtao Zhao
- Henan Provincial Research Center for Precise Synthesis of Fluorine-Containing Drugs, Anyang Normal University, Anyang, Henan 455000, China
| | - Shuaibo Zhu
- Henan Provincial Research Center for Precise Synthesis of Fluorine-Containing Drugs, Anyang Normal University, Anyang, Henan 455000, China
| | - Guowu Rao
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wen Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhenxing Zhang
- Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China.
| | - Junyan Ma
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China; Department of Chemistry, Clemson University, Clemson 29634, SC, United States.
| |
Collapse
|
6
|
Romeu MJ, Morais J, Vasconcelos V, Mergulhão F. Effect of Hydrogen Peroxide on Cyanobacterial Biofilms. Antibiotics (Basel) 2023; 12:1450. [PMID: 37760746 PMCID: PMC10525773 DOI: 10.3390/antibiotics12091450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/07/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Although a range of disinfecting formulations is commercially available, hydrogen peroxide is one of the safest chemical agents used for disinfection in aquatic environments. However, its effect on cyanobacterial biofilms is poorly investigated. In this work, biofilm formation by two filamentous cyanobacterial strains was evaluated over seven weeks on two surfaces commonly used in marine environments: glass and silicone-based paint (Sil-Ref) under controlled hydrodynamic conditions. After seven weeks, the biofilms were treated with a solution of hydrogen peroxide (H2O2) to assess if disinfection could affect long-term biofilm development. The cyanobacterial biofilms appeared to be tolerant to H2O2 treatment, and two weeks after treatment, the biofilms that developed on glass by one of the strains presented higher biomass amounts than the untreated biofilms. This result emphasizes the need to correctly evaluate the efficiency of disinfection in cyanobacterial biofilms, including assessing the possible consequences of inefficient disinfection on the regrowth of these biofilms.
Collapse
Affiliation(s)
- Maria João Romeu
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - João Morais
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal; (J.M.); (V.V.)
| | - Vítor Vasconcelos
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal; (J.M.); (V.V.)
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Filipe Mergulhão
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| |
Collapse
|
7
|
Melo Rocha MA, Clemente A, Amorim Santos A, da Silva Melo J, J Pestana C, A Lawton L, Capelo-Neto J. In situ H 2O 2 treatment of blue-green algae contaminated reservoirs causes significant improvement in drinking water treatability. CHEMOSPHERE 2023; 333:138895. [PMID: 37187381 DOI: 10.1016/j.chemosphere.2023.138895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 05/03/2023] [Accepted: 05/07/2023] [Indexed: 05/17/2023]
Abstract
The evaluation of water quality improvement brought about by in situ treatment of eutrophic water bodies, especially those used for human supply is a challenging task since each water system responds differently. To overcome this challenge, we applied exploratory factor analysis (EFA) to understand the effects of using hydrogen peroxide (H2O2) on eutrophic water used as a drinking water supply. This analysis was used to identify the main factors that described the water treatability after exposing blue-green algae (cyanobacteria) contaminated raw water to H2O2 at both 5 and 10 mg L-1. Cyanobacterial chlorophyll-a was undetectable following the application of both concentrations of H2O2 after four days, while not causing relevant changes to green algae and diatoms chlorophyll-a concentrations. EFA demonstrated that the main factors affected by both H2O2 concentrations were turbidity, pH, and cyanobacterial chlorophyll-a concentration, which are important variables for a drinking water treatment plant. The H2O2 caused significant improvement in water treatability by decreasing those three variables. Finally, the use of EFA was demonstrated to be a promising tool in identifying which limnological variables are most relevant concerning the efficacy of water treatment, which in turn can make water quality monitoring more efficient and less costly.
Collapse
Affiliation(s)
| | - Allan Clemente
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Allan Amorim Santos
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jessica da Silva Melo
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Carlos J Pestana
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - Linda A Lawton
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - José Capelo-Neto
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| |
Collapse
|
8
|
Li J, Chen Y, Wan Q, Zhang M. Phosphorus level impacts luteolin effect on Microcystis aeruginosa growth and microcystin-pollution risk - Novel perspective from correlation between exopolymers substances fractions and microcystin-production/release. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 255:114794. [PMID: 36948014 DOI: 10.1016/j.ecoenv.2023.114794] [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: 12/23/2022] [Revised: 03/03/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Luteolin as a phytogenic algicide can inhibit the growth and microcystins (MCs) release of Microcystis, a dominant genus during cyanobacterial blooms, but how phosphorus (P) level impacts luteolin effect on its growth and MC-pollution risk is unclear. By employing Microcystis aeruginosa as test alga, this study addressed this concern and explored response mechanisms from novel insights of relationship between extracellular polysaccharide (ex-poly) and protein (ex-pro) contents and MC-production/release. At each P level (0.05-5 mg/L), rising luteolin dose more greatly inhibited Microcystis growth and MC-pollution risk, with growth inhibition ratio of around 10%-30%, 20%-50% and 40%-90% for 3, 6 and 12 mg/L luteolin, respectively, but almost increasingly enhanced cellular ability of MC-production/conservation and total and bound ex-poly/ex-pro production. Rising P level promoted Microcystis growth and intracellular/extracellular MCs content (IMC, EMC) in test system at each luteolin dose, thus higher P level weakened algicidal and MC-removal effects of luteolin, indicating that P-decrease was required for stronger application outcome of luteolin. Total and bound ex-poly/ex-pro amount were positively correlated with cellular MC-production/conservation ability, IMC and EMC, which constituted cooperative stress-defense of Microcystis at each P level. Besides, rising luteolin dose posed stronger algicidal effect by inactivating gene expression involving peroxidase synthesis (especially at P-limitation), photosynthesis and P acquisition, while rising P level alleviated algicidal and MC-pollution inhibition effects of luteolin by enhancing gene expression involving N acquisition and peroxidase synthesis. This study shed novel insights for P-dependent effect and mechanisms of luteolin on toxigenic Microcystis growth and MC-pollution control, which guided to mitigating toxigenic Microcystis-dominated cyanobacterial blooms in different P-level water areas.
Collapse
Affiliation(s)
- Jieming Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China.
| | - Yanran Chen
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Qianruo Wan
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Mingxia Zhang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| |
Collapse
|
9
|
Struewing I, Sienkiewicz N, Zhang C, Dugan N, Lu J. Effective Early Treatment of Microcystis Exponential Growth and Microcystin Production with Hydrogen Peroxide and Hydroxyapatite. Toxins (Basel) 2022; 15:3. [PMID: 36668822 PMCID: PMC9864239 DOI: 10.3390/toxins15010003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Mitigating cyanotoxin production is essential to protecting aquatic ecosystems and public health. However, current harmful cyanobacterial bloom (HCB) control strategies have significant shortcomings. Because predicting HCBs is difficult, current HCB control strategies are employed when heavy HCBs have already occurred. Our pilot study developed an effective HCB prediction approach that is employed before exponential cyanobacterial growth and massive cyanotoxin production can occur. We used a quantitative polymerase chain reaction (qPCR) assay targeting the toxin-encoding gene mcyA to signal the timing of treatment. When control measures were applied at an early growth stage or one week before the exponential growth of Microcystis aeruginosa (predicted by qPCR signals), both hydrogen peroxide (H2O2) and the adsorbent hydroxyapatite (HAP) effectively stopped M. aeruginosa growth and microcystin (MC) production. Treatment with either H2O2 (10 mg·L-1) or HAP (40 µm particles at 2.5 g·L-1) significantly reduced both mcyA gene copies and MC levels compared with the control in a dose-dependent manner. While both treatments reduced MC levels similarly, HAP showed a greater ability to reduce mcyA gene abundance. Under laboratory culture conditions, H2O2 and HAP also prevented MC production when applied at the early stages of the bloom when mcyA gene abundance was below 105 copies·mL-1.
Collapse
Affiliation(s)
- Ian Struewing
- Office of Research and Development, United States Environmental Protection Agency, Cincinnati, OH 45268, USA
| | - Nathan Sienkiewicz
- Office of Research and Development, United States Environmental Protection Agency, Cincinnati, OH 45268, USA
| | - Chiqian Zhang
- Department of Civil and Environmental Engineering, Southern University and A&M College, Baton Rouge, LA 70813, USA
| | - Nicholas Dugan
- Office of Research and Development, United States Environmental Protection Agency, Cincinnati, OH 45268, USA
| | - Jingrang Lu
- Office of Research and Development, United States Environmental Protection Agency, Cincinnati, OH 45268, USA
| |
Collapse
|
10
|
Pestana CJ, Santos AA, Capelo-Neto J, Melo VMM, Reis KC, Oliveira S, Rogers R, Pacheco ABF, Hui J, Skillen NC, Barros MUG, Edwards C, Azevedo SMFO, Robertson PKJ, Irvine JTS, Lawton LA. Suppressing cyanobacterial dominance by UV-LED TiO 2-photocatalysis in a drinking water reservoir: A mesocosm study. WATER RESEARCH 2022; 226:119299. [PMID: 36323220 DOI: 10.1016/j.watres.2022.119299] [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: 06/10/2022] [Revised: 10/21/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Cyanobacteria and their toxic secondary metabolites present challenges for water treatment globally. In this study we have assessed TiO2 immobilized onto recycled foamed glass beads by a facile calcination method, combined in treatment units with 365 nm UV-LEDs. The treatment system was deployed in mesocosms within a eutrophic Brazilian drinking water reservoir. The treatment units were deployed for 7 days and suppressed cyanobacterial abundance by 85% while at the same time enhancing other water quality parameters; turbidity and transparency improved by 40 and 81% respectively. Genomic analysis of the microbiota in the treated mesocosms revealed that the composition of the cyanobacterial community was affected and the abundance of Bacteroidetes and Proteobacteria increased during cyanobacterial suppression. The effect of the treatment on zooplankton and other eukaryotes was also monitored. The abundance of zooplankton decreased while Chrysophyte and Alveolata loadings increased. The results of this proof-of-concept study demonstrate the potential for full-scale, in-reservoir application of advanced oxidation processes as complementary water treatment processes.
Collapse
Affiliation(s)
- Carlos J Pestana
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK.
| | - Allan A Santos
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - José Capelo-Neto
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Vânia M M Melo
- Department of Biology, Federal University of Ceará, Fortaleza, Brazil
| | - Kelly C Reis
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Samylla Oliveira
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Ricardo Rogers
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana B F Pacheco
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jianing Hui
- School of Chemistry, University of St. Andrews, St. Andrews, UK
| | - Nathan C Skillen
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, UK
| | - Mário U G Barros
- Ceára Water Resources Management Company (COGERH), Fortaleza, Brazil
| | - Christine Edwards
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - Sandra M F O Azevedo
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Peter K J Robertson
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, UK
| | - John T S Irvine
- School of Chemistry, University of St. Andrews, St. Andrews, UK
| | - Linda A Lawton
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| |
Collapse
|
11
|
Anam GB, Guda DR, Ahn YH. Impact of melatonin on the hydrogen peroxide treatment efficacy in Microcystis aeruginosa: Cell growth, oxidative stress response, and gene transcription. CHEMOSPHERE 2022; 307:136036. [PMID: 36007744 DOI: 10.1016/j.chemosphere.2022.136036] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/22/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
A study was conducted to determine how melatonin (MLT), a growth regulator, affects Microcystis aeruginosa cell behaviour and how MLT exposed cells respond to hydrogen peroxide (H2O2) treatment. MLT promotes the growth, chl-a content, Fv/Fm values, and microcystins (MCs) production of M. aeruginosa at low concentrations of 1-2.5 μmol/L but suppresses the growth at high concentrations (5-10 μmol/L). The cellular and genetic responses of MLT pre-treated cells to H2O2 treatment were examined further. Further research found that the cells pre-treated with MLT were susceptible to a range of growth-promoting, inhibiting and lethal effects when exposed to higher levels of H2O2. A dose-dependent pattern was observed under conditions of 0.05-0.2 mmol/L H2O2 with 0.5-2.5 μmol/L MLT concentrations to different degrees. High doses of H2O2 (0.2 and 0.3 mmol/L) typically lead to cell lysis and release of MCs in 5.0 and 10 μmol/L MLT pre-treated cells. A decrease in SOD/CAT activities and an increase in MDA levels validated the growth reduction. Furthermore, higher cell lysis and release of intracellular MCs were observed when H2O2 was increased for 5-10 μmol/L MLT pre-treated cells. This led to a higher accumulation of extracellular MCs. The results provide insight into how MLT influences H2O2 damage and assist in identifying situations where H2O2 treatment of cyanobacterial blooms is most appropriate.
Collapse
Affiliation(s)
- Giridhar Babu Anam
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Gyeongbuk, Republic of Korea
| | - Dinneswara Reddy Guda
- Korea Center for Artificial Photosynthesis and Center for Nanomaterial, Sogang University, Seoul, 121-742, Republic of Korea
| | - Young-Ho Ahn
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Gyeongbuk, Republic of Korea.
| |
Collapse
|
12
|
Xu S, Lyu P, Zheng X, Yang H, Xia B, Li H, Zhang H, Ma S. Monitoring and control methods of harmful algal blooms in Chinese freshwater system: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:56908-56927. [PMID: 35708805 DOI: 10.1007/s11356-022-21382-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Harmful algal blooms (HABs) are a worldwide problem with substantial adverse effects on the aquatic environment as well as human health, which have prompted researchers to study measures to stem and control them. Meanwhile, it is key to research and develop monitoring methods to establish early warning HABs. However, both the current monitoring methods and control methods have some shortcomings, making the field application limited. Thus, we need to improve current approaches for monitoring and controlling HABs efficiently. Based on the freshwater system features in China, we review various monitoring and control methods of HABs, summarize and discuss the problems with these methods, and propose the future development direction of monitoring and control HABs. Finally, we envision that it can combine physical, chemical, and biological methods to inhibit HAB expansion in the future, complementing each other with advantages. Further, we promise to establish a long-term strategy of controlling HABs with various algicidal bacteria co-cultivate for field applications in China. Efforts in studying algicidal bacteria must be increased to better control HABs and mitigate the risks of aquatic ecosystems and human health in China.
Collapse
Affiliation(s)
- Shengjun Xu
- Shenzhen BLY Landscape & Architecture Planning & Design Institute, Shenzhen, 518055, China
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Ping Lyu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Xiaoxu Zheng
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Haijun Yang
- Shenzhen BLY Landscape & Architecture Planning & Design Institute, Shenzhen, 518055, China
| | - Bing Xia
- Shenzhen BLY Landscape & Architecture Planning & Design Institute, Shenzhen, 518055, China
| | - Hui Li
- Shenzhen BLY Landscape & Architecture Planning & Design Institute, Shenzhen, 518055, China
| | - Hao Zhang
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
| | - Shuanglong Ma
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, China.
| |
Collapse
|
13
|
Study of the performance of a bloom-forming cyanobacterium (Microcystis aeruginosa) on the biosorption of uranium. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08384-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
14
|
Shan S, Chen Z, Yuen Koh K, Cui F, Paul Chen J. Development and application of lanthanum peroxide loaded sepiolite nanocomposites for simultaneous removal of phosphate and inhibition of cyanobacteria growth. J Colloid Interface Sci 2022; 624:691-703. [DOI: 10.1016/j.jcis.2022.05.152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 05/10/2022] [Accepted: 05/27/2022] [Indexed: 12/14/2022]
|
15
|
Yin D, Xu T, Li K, Leng L, Jia H, Sun Z. Comprehensive modelling and cost-benefit optimization for joint regulation of algae in urban water system. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 296:118743. [PMID: 34953955 DOI: 10.1016/j.envpol.2021.118743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/17/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Algal blooms in urban water system is an international concern, which especially in China, have become a major obstacle to the urban water environment improvement since the preliminary achievements were made in the treatment of black and odorous water bodies. The complex blooming mechanisms require a joint regulation plan. This study established a framework that consisted of three steps, i.e., simulation, optimization, and verification, to build an optimal joint regulation plan. By taking the urban river network in Suzhou Pingjiang Xincheng as a case study, the cost-benefits of six alternative regulation measures were assessed using an algal bloom mechanism model and the discounted cash flow model based on 70 regulation scenarios. The joint regulation plan was optimized using the marginal-cost-based greedy strategy on the basis of the cost-benefits of different measures. The optimized joint plans, which were verified to be global optima, were more cost-effective than the designed regulation scenarios, and reduced the average chlorophyll-a concentrations by 55.3%-60.1% compared with the status quo. Applying the optimized cost allocation ratios of each measure to adjust the existing regulation scheme of another similar case verified that the optimization results had great generalizability.
Collapse
Affiliation(s)
- Dingkun Yin
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Te Xu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Ke Li
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Linyuan Leng
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Haifeng Jia
- School of Environment, Tsinghua University, Beijing, 100084, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Zhaoxia Sun
- School of Environment, Tsinghua University, Beijing, 100084, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, China
| |
Collapse
|
16
|
Menezes I, Capelo-Neto J, Pestana CJ, Clemente A, Hui J, Irvine JTS, Nimal Gunaratne HQ, Robertson PKJ, Edwards C, Gillanders RN, Turnbull GA, Lawton LA. Comparison of UV-A photolytic and UV/TiO 2 photocatalytic effects on Microcystis aeruginosa PCC7813 and four microcystin analogues: A pilot scale study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 298:113519. [PMID: 34411798 DOI: 10.1016/j.jenvman.2021.113519] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/14/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
To date, the high cost of supplying UV irradiation has prevented the widespread application of UV photolysis and titanium dioxide based photocatalysis in removing undesirable organics in the water treatment sector. To overcome this problem, the use of UV-LEDs (365 nm) for photolysis and heterogeneous photocatalysis applying TiO2 coated glass beads under UV-LED illumination (365 nm) in a pilot scale reactor for the elimination of Microcystis aeruginosa PCC7813 and four microcystin analogues (MC-LR, -LY, -LW, -LF) with a view to deployment in drinking water reservoirs was investigated. UV-A (365 nm) photolysis was shown to be more effective than the UV/TiO2 photocatalytic system for the removal of Microcystis aeruginosa cells and microcystins. During photolysis, cell density significantly decreased over 5 days from an initial concentration of 5.8 × 106 cells mL-1 until few cells were left. Both intra- and extracellular microcystin concentrations were significantly reduced by 100 and 92 %, respectively, by day 5 of the UV treatment for all microcystin analogues. During UV/TiO2 treatment, there was great variability between replicates, making prediction of the effect on cyanobacterial cell and toxin behavior difficult.
Collapse
Affiliation(s)
- Indira Menezes
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil; School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom.
| | - José Capelo-Neto
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Carlos J Pestana
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom
| | - Allan Clemente
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Jianing Hui
- School of Chemistry, University of St Andrews, St Andrews, United Kingdom
| | - John T S Irvine
- School of Chemistry, University of St Andrews, St Andrews, United Kingdom
| | - H Q Nimal Gunaratne
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, United Kingdom
| | - Peter K J Robertson
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, United Kingdom
| | - Christine Edwards
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom
| | - Ross N Gillanders
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, United Kingdom
| | - Graham A Turnbull
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, United Kingdom
| | - Linda A Lawton
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom
| |
Collapse
|
17
|
Gu P, Zhang G, Luo X, Xu L, Zhang W, Li Q, Sun Y, Zheng Z. Effects of different fluid fields on the formation of cyanobacterial blooms. CHEMOSPHERE 2021; 283:131219. [PMID: 34147980 DOI: 10.1016/j.chemosphere.2021.131219] [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: 01/10/2021] [Revised: 05/31/2021] [Accepted: 06/10/2021] [Indexed: 06/12/2023]
Abstract
Cyanobacterial blooms have been attracting more and more attention, and the mechanism is widely studied. However, the effects of fluid fields on the bloom formation were rarely reported. In this study, the effects of fluid fields formed under different external conditions were investigated. The results indicated that low wind speed (3 m/s) was conducive to the formation of cyanobacterial blooms, while high wind speed (6 m/s) was adverse. For low wind speed, an upward fluid field was detected by particle image velocimetry. This fluid field accelerated the algal growth by 58.6%, and improved the buoyancy by up-regulating the genes involved in the synthesis of gas vesicles and extracellular polymeric substances. In addition, the boundary shear stress induced the colony formation of cyanobacteria and improved the aggregation proportion significantly (p < 0.05), which was beneficial to bloom formation. As a result, cyanobacterial blooms are more likely to form on the lake shore under moderate breeze. When wind speed increased to 6 m/s, a downward fluid field was formed, causing algal cells to gather at the bottom and hindering the bloom formation. These results provided a theoretical basis for field researches related to the formation of cyanobacterial blooms and the treatment of cyanobacteria.
Collapse
Affiliation(s)
- Peng Gu
- Department of Environmental Science and Engineering, Fudan University, Shanghai, China
| | | | - Xin Luo
- Department of Environmental Science and Engineering, Fudan University, Shanghai, China
| | - Lianghao Xu
- China Ship Scientific Research Center, Wuxi, China
| | - Weizhen Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, China; School of Ecological Environment, Chengdu University of Technology, Chengdu, China.
| | - Qi Li
- Department of Environmental Science and Engineering, Fudan University, Shanghai, China
| | - Yuyang Sun
- Phillips Exeter Academy '20 graduate', Exeter, NH, USA
| | - Zheng Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, China.
| |
Collapse
|
18
|
Benassi RF, de Jesus TA, Coelho LHG, Hanisch WS, Domingues MR, Taniwaki RH, Peduto TAG, da Costa DO, Pompêo MLM, Mitsch WJ. Eutrophication effects on CH 4 and CO 2 fluxes in a highly urbanized tropical reservoir (Southeast, Brazil). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:42261-42274. [PMID: 33797721 DOI: 10.1007/s11356-021-13573-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Shallow urban polluted reservoirs at tropical regions can be hotspots for CO2 and CH4 emissions. In this study, we investigated the relationships between eutrophication and GHG emissions in a highly urbanized tropical reservoir in São Paulo Metropolitan Area (Brazil). CO2 and CH4 fluxes and limnological variables (water and sediment) were collected at three sampling stations classified as hypereutrophic and eutrophic. Analysis of variance (ANOVA) and the principal component analysis (PCA) determined the most significant parameters to CO2 and CH4 fluxes. ANOVA showed significant differences of CO2 and CH4 fluxes between sampling stations with different trophic state. The hypereutrophic station showed higher mean fluxes for both CO2 and CH4 (5.43 ± 1.04 and 0.325 ± 0.167 g m-2 d-1, respectively) than the eutrophic stations (3.36 ± 0.54 and 0.060 ± 0.005 g m-2 d-1). The PCA showed a strong relationship between nutrients in the water column (surface and bottom) and GHG fluxes. We concluded that GHG fluxes were higher whenever the trophic state increases as observed previously in temperate and tropical reservoirs. High concentrations of nutrients in the water column in the studied area support the high production of autotrophic biomass that, when sedimented, ends up serving as organic matter for CH4 producers. These outcomes reinforce the necessity of water quality improvement and eutrophication mitigation in highly urbanized reservoirs in tropical regions.
Collapse
Affiliation(s)
- Roseli Frederigi Benassi
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Av. dos Estados, 5001 - Bangú, SP, 09210-580, Santo André, Brazil.
| | - Tatiane Araujo de Jesus
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Av. dos Estados, 5001 - Bangú, SP, 09210-580, Santo André, Brazil
| | - Lúcia Helena Gomes Coelho
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Av. dos Estados, 5001 - Bangú, SP, 09210-580, Santo André, Brazil
| | | | - Mercia Regina Domingues
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Av. dos Estados, 5001 - Bangú, SP, 09210-580, Santo André, Brazil
| | - Ricardo Hideo Taniwaki
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Av. dos Estados, 5001 - Bangú, SP, 09210-580, Santo André, Brazil
| | - Thais Araujo Goya Peduto
- Post-graduation Program in Environmental Science and Technology, Federal University of ABC, CTA/UFABC, Av. dos Estados, 5001 - Bangú, Santo André, SP, 09210-580, Brazil
| | - Danilo Oliveira da Costa
- Post-graduation Program in Environmental Science and Technology, Federal University of ABC, CTA/UFABC, Av. dos Estados, 5001 - Bangú, Santo André, SP, 09210-580, Brazil
| | - Marcelo Luiz Martins Pompêo
- Department of Ecology, Institute of Biosciences, University of Sao Paulo Rua do Matão, Trav. 14, n° 321, PO Box 05508-900, São Paulo, SP, Brazil
- Post-graduation Program in Environmental Sciences, UNESP, Campus de Sorocaba, Sorocaba, Brazil
| | | |
Collapse
|
19
|
Wang C, Cai Q, Li Y, Tian C, Wu X, Huang Y, Xiao B. Simultaneous removal of cyanobacterial blooms and production of clean water by coupling flocculation with a rotary drum filter. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:42082-42092. [PMID: 33792846 DOI: 10.1007/s11356-021-13664-5] [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: 12/15/2020] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
A mechanical harvesting technology based on coupling flocculation with a rotary drum filter (RDF, 35-μm) was applied to remove cyanobacterial blooms and produce clean water in Lake Caohai, a sub-lake of Lake Dianchi (Kunming, China). After treatment with a shipboard RDF and cationic polyacrylamide (CPAM, 0.5-2 mg/L) flocculation, > 95% of cyanobacterial biomass was removed. The chlorophyll-a (Chl-a) concentration and turbidity in the effluent were < 8 μg/L and < 3 NTU, respectively. Nutrient concentrations were also markedly reduced, with a permanganate index (PI) of < 2 mg/L and total phosphorus concentration of < 20 μg/L. The total nitrogen concentration was reduced from 2.75 to 1.65 mg/L, and most of the residual nitrogen was nitrate. Although powerful for the removal of suspended particles and an enhanced water transparency, the combined technology showed no significant reduction in inorganic nutrients and only a slight reduction in dissolved organic matter (DOM). The concentrations of protein and polysaccharide were significantly reduced, while that of humic matter did not change during the process. After flushing with the effluent of the RDF, a 20,000-m3 enclosure of lake water became clear when the volume of the effluent was 1.8 times that of the water enclosure. The electrical energy per order (EE/O) was calculated to be 0.053kWh/m3, which is lower than that of transferring water from more than 10 km away (0.058 kWh/m3). Thus, a shipboard RDF coupled with CPAM flocculation is a promising approach to remove harmful cyanobacterial blooms and improve the water environment of eutrophic lakes.
Collapse
Affiliation(s)
- Chunbo Wang
- Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Qijia Cai
- Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Li
- Kunming Research Academy of Plateau Lake Dianchi, Kunming, 671500, China
| | - Cuicui Tian
- Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Xingqiang Wu
- Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yuhong Huang
- Kunming Research Academy of Plateau Lake Dianchi, Kunming, 671500, China.
| | - Bangding Xiao
- Key Laboratory of Algal Biology of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| |
Collapse
|
20
|
Sukenik A, Kaplan A. Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches. Microorganisms 2021; 9:1472. [PMID: 34361909 PMCID: PMC8306311 DOI: 10.3390/microorganisms9071472] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/04/2021] [Accepted: 07/06/2021] [Indexed: 12/31/2022] Open
Abstract
An intensification of toxic cyanobacteria blooms has occurred over the last three decades, severely affecting coastal and lake water quality in many parts of the world. Extensive research is being conducted in an attempt to gain a better understanding of the driving forces that alter the ecological balance in water bodies and of the biological role of the secondary metabolites, toxins included, produced by the cyanobacteria. In the long-term, such knowledge may help to develop the needed procedures to restore the phytoplankton community to the pre-toxic blooms era. In the short-term, the mission of the scientific community is to develop novel approaches to mitigate the blooms and thereby restore the ability of affected communities to enjoy coastal and lake waters. Here, we critically review some of the recently proposed, currently leading, and potentially emerging mitigation approaches in-lake novel methodologies and applications relevant to drinking-water treatment.
Collapse
Affiliation(s)
- Assaf Sukenik
- The Yigal Allon Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, P.O. Box 447, Migdal 14950, Israel
| | - Aaron Kaplan
- Department of Plant and Environmental Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 9190401, Israel;
| |
Collapse
|
21
|
Santos AA, Guedes DO, Barros MUG, Oliveira S, Pacheco ABF, Azevedo SMFO, Magalhães VF, Pestana CJ, Edwards C, Lawton LA, Capelo-Neto J. Effect of hydrogen peroxide on natural phytoplankton and bacterioplankton in a drinking water reservoir: Mesocosm-scale study. WATER RESEARCH 2021; 197:117069. [PMID: 33784604 DOI: 10.1016/j.watres.2021.117069] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/15/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Cyanobacterial blooms are increasingly reported worldwide, presenting a challenge to water treatment plants and concerning risks to human health and aquatic ecosystems. Advanced oxidative processes comprise efficient and safe methods for water treatment. Hydrogen peroxide (H2O2) has been proposed as a sustainable solution to mitigate bloom-forming cyanobacteria since this group presents a higher sensitivity compared to other phytoplankton, with no major risks to the environment at low concentrations. Here, we evaluated the effects of a single H2O2 addition (10 mg L-1) over 120 h in mesocosms introduced in a reservoir located in a semi-arid region presenting a Planktothrix-dominated cyanobacterial bloom. We followed changes in physical and chemical parameters and in the bacterioplankton composition. H2O2 efficiently suppressed cyanobacteria, green algae, and diatoms over 72 h, leading to an increase in transparency and dissolved organic carbon, and a decrease in dissolved oxygen and pH, while nutrient concentrations were not affected. After 120 h, cyanobacterial abundance remained low and green algae became dominant. 16S rRNA sequencing revealed that the original cyanobacterial bloom was composed by Planktothrix, Cyanobium and Microcystis. Only Cyanobium increased in relative abundance at 120 h, suggesting regrowth. A prominent change in the composition of heterotrophic bacteria was observed with Exiguobacterium, Paracoccus and Deinococcus becoming the most abundant genera after the H2O2 treatment. Our results indicate that this approach is efficient in suppressing cyanobacterial blooms and improving water quality in tropical environments. Monitoring changes in abiotic parameters and the relative abundance of specific bacterial taxa could be used to anticipate the regrowth of cyanobacteria after H2O2 degradation and to indicate where in the reservoir H2O2 should be applied so the effects are still felt in the water treatment plant intake.
Collapse
Affiliation(s)
- Allan A Santos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil.
| | - Dayvson O Guedes
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Mário U G Barros
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil; Water Resources Management Company, Fortaleza, Brazil
| | - Samylla Oliveira
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| | - Ana B F Pacheco
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Sandra M F O Azevedo
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Valéria F Magalhães
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Carlos J Pestana
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - Christine Edwards
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - Linda A Lawton
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - José Capelo-Neto
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil
| |
Collapse
|
22
|
|
23
|
Menezes I, Maxwell-McQueeney D, Capelo-Neto J, Pestana CJ, Edwards C, Lawton LA. Oxidative stress in the cyanobacterium Microcystis aeruginosa PCC 7813: Comparison of different analytical cell stress detection assays. CHEMOSPHERE 2021; 269:128766. [PMID: 33143884 DOI: 10.1016/j.chemosphere.2020.128766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/15/2020] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
Cyanobacterial blooms are observed when high cell densities occur and are often dangerous to human and animal health due to the presence of cyanotoxins. Conventional drinking water treatment technology struggles to efficiently remove cyanobacterial cells and their metabolites during blooms, increasing costs and decreasing water quality. Although field applications of hydrogen peroxide have been shown to successfully suppress cyanobacterial growth, a rapid and accurate measure of the effect of oxidative stress on cyanobacterial cells is required. In the current study, H2O2 (5 and 20 mg L-1) was used to induce oxidative stress in Microcystis aeruginosa PCC 7813. Cell density, quantum yield of photosystem II, minimal fluorescence and microcystin (MC-LR, -LY, -LW, -LF) concentrations were compared when evaluating M. aeruginosa cellular stress. Chlorophyll content (determined by minimal fluorescence) decreased by 10% after 48 h while cell density was reduced by 97% after 24 h in samples treated with 20 mg L-1 H2O2. Photosystem II quantum yield (photosynthetic activity) indicated cyanobacteria cell stress within 6 h, which was considerably faster than the other methods. Intracellular microcystins (MC-LR, -LY, -LW and -LF) were reduced by at least 96% after 24 h of H2O2 treatment. No increase in extracellular microcystin concentration was detected, which suggests that the intracellular microcystins released into the surrounding water were completely removed by the hydrogen peroxide. Thus, photosynthetic activity was deemed the most suitable and rapid method for oxidative cell stress detection in cyanobacteria, however, an approach using combined methods is recomended for efficient water treatment management.
Collapse
Affiliation(s)
- Indira Menezes
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil; School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom.
| | | | - José Capelo-Neto
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Brazil.
| | - Carlos J Pestana
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom.
| | - Christine Edwards
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom.
| | - Linda A Lawton
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, United Kingdom.
| |
Collapse
|
24
|
Zhang H, Yan M, Huang T, Huang X, Yang S, Li N, Wang N. Water-lifting aerator reduces algal growth in stratified drinking water reservoir: Novel insights into algal metabolic profiling and engineering applications. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115384. [PMID: 32823043 DOI: 10.1016/j.envpol.2020.115384] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Water-lifting aerator (WLA) which was developed by Professor Tinglin Huang at Xi'an University of Architecture and Technology, China has multi-functional water quality improvement that significantly inhibits the occurrence of harmful algal blooms (HABs) in deep drinking water reservoirs. However, the biological mechanism of WLA to the suppress algal growth has not been comprehensively understood. Here, the cellular mechanism that allows WLA to control HABs was explored based on the combination of both laboratory simulation and field investigation. Under simulated hydrodynamic conditions, the results showed that the cell density, chlorophyll a content, chlorophyll fluorescence parameters, and dehydrogenase activity in Microcystis aeruginosa all peaked under light conditions at 25 °C. The metabolic activity of M. aeruginosa varied significantly under low temperature at 6 °C and light conditions when cultured for 48 h. The extracellular organic matter (EOM) and intracellular organic matter (IOM) contents of M. aeruginosa were both resolved into three components. Moreover, the total fluorescence intensities from EOM and IOM both peaked under light conditions at 25 °C. The field investigation showed that the growth of algae was decreased significantly in Lijiahe drinking water reservoir with WLA application. The chlorophyll fluorescence parameters decreased significantly after vertical mixing, thereby indicating that the WLA weakened the photosynthetic ability and reduced the biological activity of algae in situ. In addition, the WLA significantly affected the vertical distribution of the phytoplankton community composition. Altogether, these results shed new lights on understanding the control of algal blooms by WLA in stratified drinking water reservoirs. WLA has broad prospect of engineering applications, which can control algal blooms of water supply resources in situ, therefore, reduce the content of disinfection by-products in drinking water treatment plants.
Collapse
Affiliation(s)
- Haihan Zhang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Miaomiao Yan
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Tinglin Huang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Xin Huang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Shangye Yang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Nan Li
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Na Wang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, 710055, China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Xi'an Key Laboratory of Water Source and Water Quality Guarantee, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| |
Collapse
|
25
|
Hu Y, Shen L, Ren X, Bi Y, Hu B, Wang B. Properties of CaO 2 for H 2O 2 release and phosphate removal and its feasibility in controlling Microcystis blooms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:35239-35248. [PMID: 32592054 DOI: 10.1007/s11356-020-09738-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Calcium peroxide (CP) has been widely applied in environmental remediation, but few studies have reported its application in controlling Microcystis blooms. To recognize its feasibility for mitigating Microcystis blooms, the properties of CP in terms of hydrogen peroxide (HP) release and phosphate removal were investigated at different CP doses, temperatures, and initial pH values. HP release kinetics followed the Higuchi model. Batch experiments conducted in this study suggested that the HP yield and release rate were positively correlated with the CP dose. Increasing temperature decreased the HP yield but accelerated the HP release rate. The phosphate removal kinetics were well simulated by the pseudo-second-order model. The batch experiments suggested that an increased CP dose enhanced the phosphate removal capacity, but it did not affect the phosphate removal rate. Moreover, increased temperature accelerated both phosphate removal capacity and rate. However, the initial pH of low-buffer-capacity solutions did not notably affect HP release and phosphate removal. According to laboratory experiments, HP released from CP could impair photosynthetic activity, resulting in Microcystis mortality. Furthermore, the reduced phosphate concentration in the solutions suggested that CP could facilitate the control of eutrophication, which directly reduced bloom formation. Hence, our results confirmed CP as a promising algicide for Microcystis bloom control, and it is worthwhile to develop novel methods for bloom mitigation based on CP. Graphic abstract.
Collapse
Affiliation(s)
- Yiwei Hu
- School of Life Science, Shaoxing University, Shaoxing, Zhejiang, 312000, China
| | - Liang Shen
- School of Life Science, Shaoxing University, Shaoxing, Zhejiang, 312000, China
| | - Xuanqi Ren
- School of Life Science, Shaoxing University, Shaoxing, Zhejiang, 312000, China
| | - Yonghong Bi
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Baowei Hu
- School of Life Science, Shaoxing University, Shaoxing, Zhejiang, 312000, China
| | - Binliang Wang
- School of Life Science, Shaoxing University, Shaoxing, Zhejiang, 312000, China.
| |
Collapse
|
26
|
Zhu Q, Wu L, Li X, Li G, Li J, Li C, Zhao C, Wang F, Du C, Deng C, Li W, Zhang L. Effects of ambient temperature on the redistribution efficiency of nutrients by desert cyanobacteria- Scytonema javanicum. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 737:139733. [PMID: 32783823 DOI: 10.1016/j.scitotenv.2020.139733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/23/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Cultures of Scytonema javanicum obtained from artificial medium are used to control desertification, and through the effective redistribution of nutrients, related environmental problems can be alleviated. Wastewater is considered to be a potential alternative medium for S. javanicum. However, the effect of temperature on the nutrient redistribution ability of S. javanicum cultured in wastewater has rarely been considered. Therefore, this study explores the effect of temperature on S. javanicum in wastewater. The results showed that a sufficient temperature increase (from 25 °C to 30 °C) increased the photosynthetic activity of photosynthetic system II (PSII), accelerated the accumulation rate of S. javanicum biomass, and improved the removal efficiency of nutrients in wastewater. However, an increasing temperature caused a decrease in the final accumulated biomass. When the temperature was above 35 °C, the ratio of the variable to maximal fluorescence (Fv/Fm) of S. javanicum decreased, thus, causing damage to PSII. The average Fv/Fm at 35 °C and 40 °C decreased by 10.49% and 72.37%, respectively, compared to that at 25 °C. By analysing the chlorophyll fluorescence induction kinetics (OJIP) curve after 30 days, the P phase at 30 °C increased by 15.47% relative to that at 25 °C, whereas that at 35 °C and 40 °C decreased by 45.54% and 86.37%, respectively. In particular, at 40 °C, the O-J-I-P phase transformed into the O-J (J = I = P) phase, which caused irreversible damage to the PSII of S. javanicum. Comprehensive scores were determined using the entropy weight method and revealed that 30 °C was the optimal temperature for the wastewater culture of S. javanicum. This temperature improved the biomass accumulation rate and wastewater transfer efficiency. These results provide a scientific basis for improving the efficiency of the coupling technology of wastewater treatment and desert algal cultivation.
Collapse
Affiliation(s)
- Qiuheng Zhu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Li Wu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China.
| | - Xiaoguang Li
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Guowen Li
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jiaxi Li
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Caole Li
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Chen Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China
| | - Fan Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China
| | - Caili Du
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Chenning Deng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Wei Li
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Lieyu Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012 Beijing, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China.
| |
Collapse
|
27
|
Wang B, Li Y, Zheng J, Hu Y, Wang X, Hu B. Efficient removal of U(VI) from aqueous solutions using the magnetic biochar derived from the biomass of a bloom-forming cyanobacterium (Microcystis aeruginosa). CHEMOSPHERE 2020; 254:126898. [PMID: 32957293 DOI: 10.1016/j.chemosphere.2020.126898] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
The utilization of Microcystis biomass is an urgent issue in the mitigation of cyanobacterial bloom. In this study, Microcystis-derived biochar (MB) and Fe3O4-modified biochar (Fe3O4/MB) were fabricated for the U(VI) elimination. The results showed that U(VI) sorption process by either MB or Fe3O4/MB was pH-dependent and ionic strength-independent. The maximum sorption capacity of MB was higher than that of Fe3O4/MB. According to the analysis of X-ray photoelectron spectroscopy, U(VI) sorption on both MB and Fe3O4/MB was mainly ascribed to the surface complexation between U(VI) and oxygen-containing functional groups on the surface of MB. Fe3O4 particles on the surface of MB didn't provide extra active sites for the sorption of U(VI), but it enabled the adsorbent to be magnetically separated. Five consecutive sorption/desorption cycles verified the good reusability of Fe3O4/MB in this study. Therefore, the investigation is not only meaningful for the utilization of nuisance biomass from cyanobacterial blooms, but also provides novel adsorbents for the U(VI) removal from aqueous solutions.
Collapse
Affiliation(s)
- Binliang Wang
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Yingying Li
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Junli Zheng
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Yiwei Hu
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China
| | - Xiaojun Wang
- Department of Mathematics, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China.
| | - Baowei Hu
- School of Life Science, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, PR China.
| |
Collapse
|
28
|
Deng J, Fu D, Hu W, Lu X, Wu Y, Bryan H. Physiological responses and accumulation ability of Microcystis aeruginosa to zinc and cadmium: Implications for bioremediation of heavy metal pollution. BIORESOURCE TECHNOLOGY 2020; 303:122963. [PMID: 32050124 DOI: 10.1016/j.biortech.2020.122963] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 06/10/2023]
Abstract
Algae has potential to remediate heavy metals. However, the physiological responses of live algae to heavy metals are not well studied. In this study, the physiological responses of Microcystis aeruginosa to zinc (Zn) and cadmium (Cd) ions and its ability to accumulate ions were investigated. Low concentrations (<0.1 mg/l) of Zn and Cd had little influence on algal growth and physiological processes, whereas concentrations above 0.1 mg/l increased the esterase activity (from 42.5% to 621.9%), superoxide dismutase activity (from 12.8% to 45.4%), and malondialdehyde content (from 18.2% to 103.9%), and dramatically inhibited the cell division (from 12.6% to 70.0%) and photosynthetic performance (from 7.1% to 53.1%) of M. aeruginosa. The accumulation of Zn or Cd ions by M. aeruginosa increased exponentially with the initial concentration of metallic ions. Collectively, these findings reveal that M. aeruginosa has considerable potential in the remediation of freshwater lakes with heavy metal contamination during cyanobacterial blooms, where metallic ions are lower than 0.1 mg/l.
Collapse
Affiliation(s)
- Jiancai Deng
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Dongwang Fu
- Nanjing Water Planning and Designing Institute Corp., Ltd., Nanjing 210022, China
| | - Weiping Hu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xin Lu
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yonghong Wu
- Zigui Ecological Station for Three Gorges Dam Project, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Heather Bryan
- Ecosystem Science and Management Program, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia V2N 4Z9, Canada
| |
Collapse
|
29
|
Gu P, Li Q, Zhang W, Zheng Z, Luo X. Effects of different metal ions (Ca, Cu, Pb, Cd) on formation of cyanobacterial blooms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109976. [PMID: 31767457 DOI: 10.1016/j.ecoenv.2019.109976] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/12/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Eastern China is a typical region that suffers from harmful cyanobacterial blooms. Numerous studies have focused on bloom formation mechanisms; however, the detailed mechanisms remained unclear. Our study explored the influence of four metal ions (Ca, Cu, Pb and Cd) on Microcystis aeruginosa to determine their effects on bloom formation. We found that Ca concentrations higher than 100 mg L-1 contributed to cyanobacterial bloom formation. The presence of Ca triggered the anti-oxidation process and promoted the secretion of extracellular polysaccharides, thus inducing aggregation of algal cells and enhancing their buoyancy 2.1-fold more than the control (p<0.05). The reverse regulation of dissolved CO2 to bicarbonate by carbonic anhydrase formed a large amount of carbonate and decreased the growth rate by 38-56%. Cu (>0.1 mg L-1) presented significant toxicity to algal cells while Pb (>1 mg L-1) suppressed the algal growth rate due to the acidic condition. Cd (<0.1 mg L-1) exhibited no apparent toxicity to the algae. Furthermore, as the buoyancy increased, Cd was likely to facilitate the formation of cyanobacterial blooms, which needs further research. These findings can provide a theoretical basis for eutrophic lake management and contribute to the development of water quality and wastewater discharge standards.
Collapse
Affiliation(s)
- Peng Gu
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China
| | - Qi Li
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China
| | - Weizhen Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China
| | - Zheng Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China.
| | - Xingzhang Luo
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China
| |
Collapse
|