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Xu J, He C, Bai W, Cao F, Dai J. Efficient and sustained inhibition of ammonia nitrogen release from sediment in water by microbial self-aggregation zeolite layer. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34563-5. [PMID: 39106013 DOI: 10.1007/s11356-024-34563-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 07/25/2024] [Indexed: 08/07/2024]
Abstract
Despite global efforts to manage water eutrophication, the continual release of ammonia nitrogen from sediments maintains the eutrophic state of water bodies, presenting serious challenges to the management. In order to find an efficient method for sediment remediation, the experiment of using signal molecules to enhance the adhesion of microorganisms on zeolite was carried out. Five different zeolitic ammonium adsorptions were examined using two different signal molecules, N-(3-oxohexanoyl)-L-homoserine lactone (OHHL) and N-(β-ketocaproyl)-DL-homoserine lactone (C6), to enhance microbial attachment on two types of zeolites. The results showed that the modified microbial attached Z1 zeolite reinforced with signal molecule C6 had the best effect. The effect was better in the case of high ammonium adsorption, and the TN removal could reach 7.99 mg·L-1 with an inhibition rate of 90.08%. The ammonia nitrogen removal reached 4.75 mg·L-1 with an inhibition rate of 87.64%, and the ammonia nitrogen and total nitrogen of the overlying water reached the surface III water quality standard. In addition, the addition of the signal molecule increased the zeta potential on the surface of the bacterial colloid. In addition, the amount of protein I in the dissolved organic matter (DOM) fraction increased, improving microbial adhesion ability and facilitating their attachment to the zeolite surface. The signal molecule C6 could increase the zeta potential of microbial surface and promote the production of protein I, thus strengthening the attachment of zeolite biofilm and improving the water quality.
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Affiliation(s)
- Jinlan Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Shaanxi, Xi'an, 710055, China.
- Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, Beijing, China.
- Key Laboratory of Environmental Engineering, Xi'an, Shaanxi Province, China.
| | - Chen He
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Shaanxi, Xi'an, 710055, China
- Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, Beijing, China
- Key Laboratory of Environmental Engineering, Xi'an, Shaanxi Province, China
| | - Wenguang Bai
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Shaanxi, Xi'an, 710055, China
- Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, Beijing, China
- Key Laboratory of Environmental Engineering, Xi'an, Shaanxi Province, China
| | - Fen Cao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Shaanxi, Xi'an, 710055, China
- Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, Beijing, China
- Key Laboratory of Environmental Engineering, Xi'an, Shaanxi Province, China
| | - Jianan Dai
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Shaanxi, Xi'an, 710055, China
- Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, Beijing, China
- Key Laboratory of Environmental Engineering, Xi'an, Shaanxi Province, China
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Wang Z, Zhu G, Zhou Y, Wen Z, Wu D. Lanthanum-modified tobermorite synthesized from fly ash for efficient phosphate removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:29584-29594. [PMID: 38580876 DOI: 10.1007/s11356-024-33153-9] [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: 11/21/2023] [Accepted: 03/27/2024] [Indexed: 04/07/2024]
Abstract
Phosphate removal from water by lanthanum-modified tobermorite synthesized from fly ash (LTFA) with different lanthanum concentrations was studied. LTFA samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and Brunauer‒Emmett‒Teller specific surface area analysis. The results showed that the LTFA samples were mainly composed of mesoporous tobermorite-11 Å, and LTFA1 with a lanthanum concentration of 0.15 M had a high specific surface area (83.82 m2/g) and pore volume (0.6778 cm3/g). The phosphate adsorption capacities of LTFA samples were highest at pH 3 and gradually decreased with increasing pH. The phosphate adsorption kinetics data on LTFA samples were most accurately described by the Elovich model. The adsorption isotherms were in the strongest agreement with the Temkin model, and LTFA1 showed the highest phosphate adsorption capacity (282.51 mg P/g), which was higher than that of most other lanthanum-modified adsorbents. LTFA1 presented highly selective adsorption of phosphate with other coexisting ions (HCO3-, Cl-, SO42-, and NO3-). In addition, phosphate was adsorbed onto LTFA samples by forming inner-sphere phosphate complexes and amorphous lanthanum phosphate. This study provides technical support for development of efficient fly ash-based phosphate adsorbents.
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Affiliation(s)
- Zehua Wang
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China.
| | - Guanyu Zhu
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China
| | - Yongwei Zhou
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China
| | - Zhencheng Wen
- School of Resources and Environment, Nanchang University, Nanchang, 330031, China
| | - Daishe Wu
- School of Materials and Chemical Engineering, Pingxiang University, Pingxiang, 337000, China
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Chen X, Zheng X, Fu W, Liu A, Wang W, Wang G, Ji J, Guan C. Microplastics reduced bioavailability and altered toxicity of phenanthrene to maize (Zea mays L.) through modulating rhizosphere microbial community and maize growth. CHEMOSPHERE 2023; 345:140444. [PMID: 37839745 DOI: 10.1016/j.chemosphere.2023.140444] [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: 02/21/2023] [Revised: 07/25/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023]
Abstract
Due to its large specific surface area and great hydrophobicity, microplastics can adsorb polycyclic aromatic hydrocarbons (PAHs), affecting the bioavailability and the toxicity of PAHs to plants. This study aimed to evaluate the effects of D550 and D250 (with diameters of 550 μm and 250 μm) microplastics on phenanthrene (PHE) removal from soil and PHE accumulation in maize (Zea mays L.). Moreover, the effects of microplastics on rhizosphere microbial community of maize grown in PHE-contaminated soil would also be determined. The results showed that D550 and D250 microplastics decreased the removal of PHE from soil by 6.5% and 2.7% and significantly reduced the accumulation of PHE in maize leaves by 64.9% and 88.5%. Interestingly, D550 microplastics promoted the growth of maize and enhanced the activities of soil protease and alkaline phosphatase, while D250 microplastics significantly inhibited the growth of maize and decreased the activities of soil invertase, alkaline phosphatase and catalase, in comparison with PHE treatment. In addition, microplastics changed the rhizosphere soil microbial community and reduced the relative abundance of PAHs degrading bacteria (Pseudomonas, Massilia, Proteobacteria), which might further inhibit the removal of PHE from soil. This study provided a new perspective for evaluating the role of microplastics on the bioavailability of PHE to plants and revealing the combined toxicity of microplastics and PHE to soil microcosm and plant growth.
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Affiliation(s)
- Xiancao Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Xiaoyan Zheng
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Wenting Fu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Anran Liu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Wenjing Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Gang Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Jing Ji
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
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Yang Y, Zhang W, Liu W, He D, Wan W. Irreversible community difference between bacterioplankton generalists and specialists in response to lake dredging. WATER RESEARCH 2023; 243:120344. [PMID: 37482008 DOI: 10.1016/j.watres.2023.120344] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/25/2023]
Abstract
Understanding response of bacterioplankton community responsible for maintaining ecological functions of aquatic ecosystems to environmental disturbance is an important subject. However, it remains largely unclear how bacterioplankton generalists and specialists respond to dredging disturbance. Illumina MiSeq sequencing and statistical analyses were used to evaluate landscape patterns, evolutionary potentials, environmental adaptability, and community assembly processes of generalists and specialists in response to dredging in eutrophic Lake Nanhu. The Proteobacteria and Actinobacteria dominated bacterioplankton communities of generalists and specialists, and abundances of Proteobacteria decreased and Actinobacteria increased after dredging. The generalists displayed higher phylogenetic distance, richness difference, speciation rate, extinction rate, and diversification rate as well as stronger environmental adaptation than that of specialists. In contrast, the specialists rather than generalists showed higher community diversity, taxonomic distance, and species replacement as well as closer phylogenetic clustering. Stochastic processes dominated community assemblies of generalists and specialists, and stochasticity exhibited a larger effect on community assembly of generalists rather than specialists. Our results emphasized that lake dredging could change landscape patterns of bacterioplankton generalists and specialists, whereas the short-term dredging conducted within one year was unable to reverse community difference between generalists and specialists. Our findings extend our understanding of how bacterioplankton generalists and specialists responding to dredging disturbance, and these findings might in turn call on long-term dredging for better ecological restoration of eutrophic lakes.
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Affiliation(s)
- Yuyi Yang
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430070, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, Chinese Academy of Sciences & Hubei Province, Wuhan 430070, China
| | - Weihong Zhang
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430070, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, Chinese Academy of Sciences & Hubei Province, Wuhan 430070, China
| | - Wenzhi Liu
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430070, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, Chinese Academy of Sciences & Hubei Province, Wuhan 430070, China
| | - Donglan He
- College of Life Science, South-Central Minzu University, Wuhan 430070, China
| | - Wenjie Wan
- Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430070, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, Chinese Academy of Sciences & Hubei Province, Wuhan 430070, China.
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5
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Sun F, Zhan Y, Lin J. Effect of capping mode on control of phosphorus release from sediment by lanthanum hydroxide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-28102-x. [PMID: 37280493 DOI: 10.1007/s11356-023-28102-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/31/2023] [Indexed: 06/08/2023]
Abstract
The use of in situ active capping to control phosphorus release from sediment has attracted more and more attentions in recent years. It is important to identify the effect of capping mode on the control of phosphorus release from sediment by the in situ active capping method. In this study, the impact of capping mode on the restraint of phosphorus migration from sediment into overlying water (OW) by lanthanum hydroxide (LH) was studied. Under no suspended particulate matter (SPM) deposition condition, LH capping effectively restrained the liberation of endogenous phosphorus into OW during anoxia, and the inactivation of diffusive gradient in thin film-unstable phosphorus (UPDGT) and mobile phosphorus (PMobile) in the topmost sediment served as a significant role in the restraint of endogenous phosphorus migration into OW by LH capping. Under no SPM deposition, although the transformation of capping mode from the single high dose capping to the multiple smaller doses capping had a certain negative impact on the restraint efficiency of endogenous phosphorus liberation to OW by LH in the early period of application, it increased the stability of phosphorus in the static layer in the later period of application. Under SPM deposition condition, LH capping had the capability to mitigate the risk of endogenous phosphorus liberation into OW under anoxia conditions, and the inactivation of UPDGT and PMobile in the topmost sediment was a significant mechanism for the control of sediment phosphorus liberation into OW by LH capping. Under SPM deposition condition, the change in the covering mode from the one-time high dose covering to the multiple smaller doses covering decreased the efficiency of LH to limit the endogenous phosphorus transport into OW in the early period of application, but it increased the performance of LH to restrain the sedimentary P liberation during the later period of application. The results of this work suggest that the multiple LH capping is a promising approach for controlling the internal phosphorus loading in freshwater bodies where SPM deposition often occurs in the long run.
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Affiliation(s)
- Fujun Sun
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
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6
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Sun F, Chen Y, He L, Tang J, Li Y. Comparative study of sediment phosphorus immobilization via the addition of lanthanum-modified and thermal-modified drinking water treatment sludge. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27960-9. [PMID: 37270756 DOI: 10.1007/s11356-023-27960-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
Lanthanum-modified drinking water treatment sludge (DTSLa) and thermal-modified drinking water treatment sludge (TDTS) were prepared from drinking water treatment sludge(DTS). The adsorption properties of DTSLa and TDTS on phosphate in water and the effects on the controlled release and morphology of phosphorus in sediment at different dosages (0%, 2.5%, 5%) were discussed. Combining with SEM, BET, XRD, FTIR, and XPS characterization methods, the immobilization mechanism of DTSLa and TDTS on phosphorus in sediment was explored. The addition of TDTS can transform NH4Cl-P (loosely sorbed P), BD-P (bicarbonate-dithionite extractable P), and Org-P (organic P) into stable NaOH-rP (metal oxide-bound P) in sediment, and the conversion amount will increase with the increase of TDTS supplemental amount. DTSLa converted NH4Cl-P, BD-P, Org-P, and NaOH-rP to more stable HCl-P (calcium-bound P). At the same time, the content of WSP (water-soluble phosphorus) and olsen-P (NaHCO3 extractable P) in sediment can be reduced by the addition of DTSLa and TDTS, reducing the risk of the release of phosphorus from the sediment to the overlying water. In addition, phosphorus can be directly removed from the interstitial water by DTSLa and TDTS, so as to reduce the phosphorus concentration gradient between the overlying water and the interstitial water, thus inhibiting the release of phosphorus from interstitial water to overlying water. The results showed that DTSLa is better than TDTS in terms of its adsorption capacity and adsorption effect on endogenous phosphorus in water, so DTSLa is more suitable to be used as a sediment conditioner to control the phosphorus content in water and sediment.
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Affiliation(s)
- Fei Sun
- School of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
| | - Yu Chen
- School of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China.
| | - Liwenze He
- School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
| | - Jingxiang Tang
- School of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
| | - Yanjun Li
- School of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China
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7
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Zhan Y, Qiu B, Lin J. Effect of common ions aging treatment on adsorption of phosphate onto and control of phosphorus release from sediment by lanthanum-modified bentonite. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 341:118109. [PMID: 37172347 DOI: 10.1016/j.jenvman.2023.118109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/21/2023] [Accepted: 05/04/2023] [Indexed: 05/14/2023]
Abstract
The objective of this work was to explore the influence of combined aging treatment using Na+, Ca2+, Cl-, HCO3- and SO42- on the adsorption of phosphate (HiPO4i-3) onto and the restraint of internal phosphorus (P) migration into overlying water (OW) by lanthanum modified bentonite (LMB). To achieve this aim, the adsorption characteristics and mechanisms of HiPO4i-3 onto the raw and aged LMBs (named as R-LMB and A-LMB, respectively) were comparatively studied, and the effects of R-LMB and A-LMB treatments (addition and capping) on the migration of P from sediment to OW were comparatively investigated. The results showed that the combined aging treatment of R-LMB with Na+, Ca2+, Cl-, HCO3- and SO42- inhibited the adsorption of HiPO4i-3. Similar to R-LMB, the precipitation of HiPO4i-3 with La3+ to form LaPO4 and the ligand exchange between CO32- and HiPO4i-3 to form the inner-sphere lanthanum-phosphate complexes are the important mechanisms for the HiPO4i-3 uptake by A-LMB. The R-LMB addition and capping can be effective in the suppression of endogenous P release to OW under hypoxia conditions. The inactivation of diffusive gradient in thin film-unstable P (DGT-UP) and potentially mobile P (PM-P) in sediment acted as a key role in the restraint of internal P release to OW by the R-LMB addition, and the immobilization of DGT-UP and PM-P in the topmost sediment played a key role in the interception of endogenous P migration into OW by the R-LMB capping. Although the Na+/Ca2+/Cl-/HCO3-/SO42- combined aging treatment had a certain negative effect on the efficiencies of LMB addition and capping to hinder the liberation of P from sediment into OW, the A-LMB addition and capping still can be effective in the control of sediment internal phosphorus pollution to a certain degree. The results of this work indicate that LMB has a high potential to be used as a capping/amendment material to control internal phosphorus pollution.
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Affiliation(s)
- Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Bo Qiu
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
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Lin J, Xiang W, Zhan Y. Comparison of magnetite, hematite and goethite amendment and capping in control of phosphorus release from sediment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:66080-66101. [PMID: 37097581 DOI: 10.1007/s11356-023-27063-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023]
Abstract
The characteristics and mechanism of phosphate adsorption onto magnetite, hematite and goethite were comparatively studied, and the effects of magnetite, hematite and goethite amendment and capping on endogenous phosphorus (P) liberation from sediment into overlying water (OW) were comparatively investigated. The adsorption of phosphate onto magnetite, hematite and goethite mainly obeyed the inner-sphere complexation mechanism, and the phosphate adsorption capacity decreased in the order of magnetite > goethite > hematite. The magnetite, hematite and goethite amendment all can decrease the risk of endogenous Prelease into OW under anoxic conditions, and the inactivation of diffusion gradients in thin films-labile P in sediment made a great contribution to the restraint of endogenous P release into OW by the magnetite, hematite and goethite amendment. The efficiency of endogenous P release restraint by the iron oxide addition decreased in the order of magnetite > goethite > hematite. The magnetite, hematite and goethite capping all can be effective for the suppression of endogenous P release from sediment into OW under anoxic conditions, and most of P immobilized by the magnetite, hematite and goethite capping layers is relatively or very stable. The results obtained from this work suggest that magnetite is more suitably used a capping/amendment material to prevent P release from sediment than hematite and goethite, and magnetite capping is a promising approach for hindering sedimentary P release into OW.
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Affiliation(s)
- Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
| | - Weijie Xiang
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
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Sun C, Zhong J, Pan G, Mortimer RJG, Yu J, Wen S, Zhang L, Yin H, Fan C. Controlling internal nitrogen and phosphorus loading using Ca-poor soil capping in shallow eutrophic lakes: Long-term effects and mechanisms. WATER RESEARCH 2023; 233:119797. [PMID: 36870105 DOI: 10.1016/j.watres.2023.119797] [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: 11/16/2022] [Revised: 01/31/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Clean soil is a potential capping material for controlling internal nutrient loading and helping the recovery of macrophytes in eutrophic lakes, but the long-term effects and underlying mechanisms of clean soil capping under in-situ conditions remain poorly understood. In this study, a three-year field capping enclosure experiment combining intact sediment core incubation, in-situ porewater sampling, isotherm adsorption experiments and analysis of sediment nitrogen (N) and phosphorus (P) fractions was conducted to assess the long-term performance of clean soil capping on internal loading in Lake Taihu. Our results indicate that clean soil has excellent P adsorption and retention capacity as an ecologically safe capping material and can effectively mitigate NH4+-N and SRP (soluble reactive P) fluxes at the sediment-water interface (SWI) and porewater SRP concentration for one year after capping. The mean NH4+-N and SRP fluxes of capping sediment were 34.86 mg m-2 h-1 and -1.58 mg m-2 h-1, compared 82.99 mg m-2 h-1 and 6.29 mg m-2 h-1 for control sediment. Clean soil controls internal NH4+-N release through cation (mainly Al3+) exchange mechanisms, while for SRP, clean soil can not only react with SRP due to its high Al and Fe content, but also stimulate the migration of active Ca2+ to the capping layer, thus precipitating as Ca-bound P (Ca-P). Clean soil capping also contributed to the restoration of macrophytes during the growing season. However, the effect of controlling internal nutrient loading only lasted for one year under in-situ conditions, after which the sediment properties returned to pre-capping conditions. Our results highlight that clean Ca-poor soil is a promising capping material and further research is needed to extend the longevity of this geoengineering technology.
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Affiliation(s)
- Chuanzhe Sun
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jicheng Zhong
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China.
| | - Gang Pan
- School of Humanities, York St John University, Lord Mayor's Walk, York, YO31 7EX, UK; School of Chemical and Environmental Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Robert J G Mortimer
- School of Humanities, York St John University, Lord Mayor's Walk, York, YO31 7EX, UK
| | - Juhua Yu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China; Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou, 350013, PR China
| | - Shuailong Wen
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Lei Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Hongbin Yin
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Chengxin Fan
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China
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Xia L, van Dael T, Bergen B, Smolders E. Phosphorus immobilisation in sediment by using iron rich by-product as affected by water pH and sulphate concentrations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 864:160820. [PMID: 36526189 DOI: 10.1016/j.scitotenv.2022.160820] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/18/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Iron (Fe) rich by-product from drinking water treatment plants can be added to rivers and lakes to immobilise phosphorus (P) in sediment and lower eutrophication risks. This study was set up to investigate the P immobilisation efficiency of an Fe rich by-product as affected by the pH and sulphate (SO4) concentration in the overlying water. Both factors are known to inhibit long-term P immobilisation under anoxic conditions. A static sediment-water incubation was conducted at varying buffered water pH values (6, 7 and 8) and different initial SO4 concentrations (0-170 mg SO4 L-1) with or without Fe rich by-product amendment to the sediment. In the unamended sediment, the P release to the overlying water was highest, and up to 6 mg P L-1, at lowest water pH due to higher reductive dissolution of Fe(III) oxyhydroxides. The Fe rich by-product amendment to the sediment largely reduced P release from sediment by factors 50-160 depending on pH, with slightly lowest immobilisation at highest pH 8, likely because of pH dependent P sorption. The total sulphur (S) concentrations in the overlying water reduced during incubation. The P release in unamended sediments increased from 2.7 mg L-1 to 4.2 mg L-1 with higher initial SO4 concentrations, suggesting sulphide formation during incubation and FeS precipitation that facilitates release of P. However, no such SO4 effects were found where Fe rich by-product was applied that lowered P release to <0.1 mg L-1 illustrating high stability of immobilised P in amended sediments. This study suggests that Fe rich by-product is efficient for P immobilisation but that loss of Fe in low pH water may lower its long-term effect.
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Affiliation(s)
- Lei Xia
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium.
| | - Toon van Dael
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Benoit Bergen
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium
| | - Erik Smolders
- Division of Soil and Water Management, KU Leuven, Kasteelpark Arenberg 20, 3001 Leuven, Belgium
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Zhang F, Yan J, Fang J, Yan Y, Zhang S, Benoit G. Sediment phosphorus immobilization with the addition of calcium/aluminum and lanthanum/calcium/aluminum composite materials under wide ranges of pH and redox conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 863:160997. [PMID: 36535477 DOI: 10.1016/j.scitotenv.2022.160997] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Aquatic environment factors often influence and regulate the direction of phosphorus (P) flow at the sediment-water interface (SWI). High pH and low DO, common in eutrophic lakes, would induce large releases of P from sediment, and thus cause the negative effect on the efficiency of some P-passivators. Hence, the development of P passivators that could function over a wide range of pH condition and redox state in the overlaying water with reduced undesirable side effects is critical for the eutrophic lake remediation. In the present study, a calcium (Ca)/aluminum (Al) composite (CA) and a lanthanum (La)/Ca/Al composite (LCA) were prepared for P immobilization in lake sediments, using calcium and lanthanum coprecipitated with aluminum. CA and LCA were shown to have good P sorption performance at pH 4-11, particularly at pH 8-11. Furthermore, CA and LCA have an ability to correct the pH of water that deviates from neutral. The maximum P adsorption (Qmax) of sediment amended by 4 % CA and 4 % LCA increased by 83 % and 103 %, and their equilibrium P concentration (EPC0) decreased by 76 % and 88 %, respectively. Under various pH and DO conditions, the P concentration in overlying water was significantly decreased by CA and LCA amendment, and their addition could effectively counteract the P release from sediments induced by high pH and low DO. The mechanisms of P immobilization in amended sediments under various pH and DO levels are primarily the conversion of reactive P to stable P. The P immobilization performance of CA and LCA could cope with a wide range of pH and redox conditions in eutrophic lakes, and they would help to correct extreme pH values, thus they are expected to be a new generation of commercial P-passivators.
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Affiliation(s)
- Fengrui Zhang
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, Hubei 430074, China
| | - Jin Yan
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, Hubei 430074, China
| | - Jiangling Fang
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, Hubei 430074, China
| | - Yi Yan
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, Hubei 430074, China
| | - Shenghua Zhang
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan, Hubei 430074, China.
| | - Gaboury Benoit
- School of Forestry & Environmental Studies, Yale University, New Haven, CT 06511, United States
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12
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Interception of phosphorus release from sediment by magnetite/lanthanum carbonate co modified activated attapulgite composite: performance and mechanism. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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13
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Li Y, Liu Y, Wang H, Zuo Z, Yan Z, Wang L, Wang D, Liu C, Yu D. In situ remediation mechanism of internal nitrogen and phosphorus regeneration and release in shallow eutrophic lakes by combining multiple remediation techniques. WATER RESEARCH 2023; 229:119394. [PMID: 36446175 DOI: 10.1016/j.watres.2022.119394] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/14/2022] [Accepted: 11/18/2022] [Indexed: 06/16/2023]
Abstract
Large anthropogenic inputs of N and P alter the nutrient cycle and exacerbate global eutrophication problems in aquatic ecosystems. This study in Lake Datong, China, investigates the remediation mechanism of multiple remediation technique combinations (dredging, adsorbent amendment, and planting aquatic vegetation) on sediment N and P loads based on two high-resolution sampling techniques (HR-Peeper and DGT) and P sequential extraction procedures. The results showed that high temperature and low dissolved oxygen considerably enhanced pore water dissolved reactive P (DRP) and NH4+ concentrations attributable to abundant Fe-P and organic matter content in the sediment. Fe reduction is critical for regulating pore water DRP release and promoting N removal. Overall, for Lake Datong, combining multiple remediation techniques is more effective in controlling sediment P loads (pore water DRP, P fluxes, forms of P, and labile P), from a long-term perspective, than a single remediation. Lanthanum-modified bentonite (LMB) inactivation treatment can transfer mobile P in the surface sediment into more refractory forms over time, thereby reducing the risk of sediment labile P release. However, it is difficult to effectively remediate internal P loads owing to inappropriate dredging depths and low biomass of aquatic vegetation. Future lake restoration practices should optimize the selection of different remediation technique combinations based on internal N and P pollution characteristics, while reducing external wastewater input. These results are important for understanding the remediation mechanisms of internal N and P and provide suggestions for sediment management of shallow eutrophic lakes.
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Affiliation(s)
- Yang Li
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China; School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, PR China
| | - Yuan Liu
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China
| | - Huiyuan Wang
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China
| | - Zhenjun Zuo
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China
| | - Zhiwei Yan
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China
| | - Ligong Wang
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China
| | - Dihua Wang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, PR China.
| | - Chunhua Liu
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China.
| | - Dan Yu
- The National Field Station of Freshwater Ecosystem of Liangzi Lake, College of Life Science, Wuhan University, Wuhan 430072, PR China
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14
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Peng Y, Zhang T, Tang B, Li X, Cui S, Guan CY, Zhang B, Chen Q. Interception of fertile soil phosphorus leaching with immobilization materials: Recent progresses, opportunities and challenges. CHEMOSPHERE 2022; 308:136337. [PMID: 36084834 DOI: 10.1016/j.chemosphere.2022.136337] [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: 07/04/2022] [Revised: 08/11/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The non-point source pollution induced by phosphorus (P) leaching from fertile soils is accelerating the eutrophication phenomena in aqueous ecosystems. Herein, to alleviate and intercept the P leaching from the fertile soils, diverse P immobilization materials (PIM) which can transform labile P into stable P via a range of physicochemical and biological interactions have been adopted and received increasing research interest. However, the remediation mechanisms of different PIMs were complex and vary with soil properties and PIM application methods. In this review, the P fraction and mobility characteristics of different fertile soils were first introduced. Then, three kinds of PIM including inorganic materials (e.g., clay minerals and red mud), organic materials (e.g., polyacrylamide), and composites (e.g., modified biochar) applied in soil P leaching interception were concluded. The key factors (i.e., soil pH, soil texture, organic matter content and variable soil moisture) influencing PIM performance and potential PIMs used for reducing soil P leaching were also introduced. Current review can favor for proposing more suitable and insightful strategies to regulate the fertile soil P and achieve the dual goals of improving the crop land quality and yield, and preventing agricultural non-point source pollution.
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Affiliation(s)
- Yutao Peng
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong, 523758, China; Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
| | - Tiantian Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Bingbing Tang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Xiaoyun Li
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong, 523758, China
| | - Shihao Cui
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Chung-Yu Guan
- Department of Environmental Engineering, National ILan University, Yilan 260, Taiwan
| | - Baige Zhang
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Qing Chen
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
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Shen Z, Wang H, Liang D, Yan Y, Zeng Y. The fate of microplastics in estuary: A quantitative simulation approach. WATER RESEARCH 2022; 226:119281. [PMID: 36288665 DOI: 10.1016/j.watres.2022.119281] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 10/01/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Microplastics pollution is an emerging environmental concern. However, there are almost no MPs numerical simulation studies in the Yangtze Estuary which is considered as the largest plastic export in the world and quantitative simulation is not carried out in the existing models. Therefore, completing quantitative simulation and exploring different patterns of MPs transport are the main objectives of this study. In addition, the concentration distribution and risk of MPs are also analyzed. Mass-Number method is proposed to quantitatively simulate microplastics concentration in Feb. and May with errors of less than 18%. Compared with sediment flocculation and settling transport, independent floating transport is more susceptible to surface currents resulting in increased beaching and more inhomogeneous concentration distribution. Meanwhile, under the influence of current, local topography and salt wedge, the MPs perform linear motion and clockwise spiral motion inside and outside the estuary and rapidly form a "hot spot" on the southeastern part of Chongming Island and 57% to 90% of MPs are beached or settled inside the estuary, especially on the north shore. Therefore, MPs risk in some sensitive targets should be concerned according to risk assessment results. Our results break the space-time limit and explore the fate of MPs in the Yangtze Estuary and provide new idea and concern of MPs numerical simulation.
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Affiliation(s)
- Zilin Shen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Hua Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.
| | - Dongfang Liang
- Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK
| | - Yuting Yan
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Yichuan Zeng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
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16
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Li Y, Zheng B, Yang Y, Chen K, Chen X, Huang X, Wang X. Soil microbial ecological effect of shale gas oil-based drilling cuttings pyrolysis residue used as soil covering material. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129231. [PMID: 35739751 DOI: 10.1016/j.jhazmat.2022.129231] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/13/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
The residue derived from oil-based drilling cutting pyrolysis could be used as paving materials. Some petroleum hydrocarbons remain in the residue after pyrolysis and cause severe environmental pollution. In this study, the soil column leaching experiments were carried out under different leaching amounts, and the vertical migration characteristics of petroleum hydrocarbons in soil and the dynamic response mechanism of microorganisms to petroleum hydrocarbons were analyzed. The result showed that the soil pH value and water content with different leaching amounts did not differ significantly, but the vertical migration ability of each petroleum hydrocarbon component was different. In petroleum hydrocarbon contaminated soil, the relative abundance of Proteobacteria maintained a high level (23.6%-60.7%). At the genus level, the relative abundance of Massilia decreased with the leaching amount increased. According to PICRUSt, Monooxygenase [EC: 1.14.13.-] played a significant role in petroleum hydrocarbon degradation. While Long-chain-fatty-acid-CoA ligase [EC: 6.2.1.3] had the highest relative abundance. By studying the influence of shale gas oil-based drilling cuttings pyrolysis residue on soil physical and chemical properties and soil microorganisms, this work provides scientific ecological assessment for the resource application of pyrolysis residue.
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Affiliation(s)
- Yuting Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Baiping Zheng
- Chongqing Environment & Sanitation Group, Chongqing 401121, China
| | - Yinghuan Yang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Kejin Chen
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xiangle Chen
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xin Huang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Xiang Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Environment and Ecology, Chongqing University, Chongqing 400044, China.
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17
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Zhu H, Xie Y, Zou X, Wang T, Gong Z. Determination of organophosphate flame retardant tris(2-chloroethyl)phosphine based on the luminol-H 2 O 2 chemiluminescence system. LUMINESCENCE 2021; 37:263-267. [PMID: 34806291 DOI: 10.1002/bio.4169] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 02/02/2023]
Abstract
Organophosphorus flame retardants (OPFRs) are new types of environmental pollutants, therefore the rapid and sensitive detection of OPFRs is a very important objective. A new experimental phenomenon was found in which tris(2-chloroethyl)phosphine (TCEP), a type of OPFR, could effectively enhance the signal of the luminol-H2 O2 chemiluminescence (CL) system. Combined with the controllability of flow injection analysis, a rapid, stable, and sensitive CL method was established. The CL intensity responded linearly to the concentration of TCEP in the range 0.5-100 μg/L (R2 = 0.999) with a low detection limit of 33 ng/L. Relative standard deviation (RSD) was 2.2% (n = 7, c = 100 μg/L). Water samples were labelled and recycled with RSDs of 1.1-5.7% and recoveries of 88.7-116.1%. Based on these results, this study established a new CL detection method for the environmental pollutant TCEP.
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Affiliation(s)
- Huanhuan Zhu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Yonghong Xie
- Sichuan Ecological Environmental Monitoring Station, Chengdu, China
| | - Xue Zou
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Tengfei Wang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China.,State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu, China
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18
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Li X, Xie Q, Kuang Y, Wu D. Coupled influence of pH and dissolved organic carbon on the immobilization of phosphorus by lanthanum-modified zeolite. CHEMOSPHERE 2021; 274:129958. [PMID: 33979929 DOI: 10.1016/j.chemosphere.2021.129958] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Wind-driven waves and currents in shallow lakes frequently trigger the resuspension of sediments in the photic layer, which is characterized with a high pH and high dissolved organic carbon (DOC) concentration. The mechanism of phosphorus-inactivating agents (PIAs) immobilizing phosphorus under the coupled influence of pH and DOC is not clarified, and the applicability of PIAs in eutrophic shallow lakes is thus still doubtful. We found that, under the coupled influence of pH and DOC, the uptake of phosphate by LMZ was affected mainly by pH at low DOC concentrations and by DOC at high DOC concentrations. A high pH (9.3) and high DOC concentration (24.7 mg/L) greatly increased the release of phosphorus from sediment to water. However, the addition of LMZ substantially reduced the P concentrations in water, mainly via capture of dissolved inorganic phosphorus. The results of the reversibility of the adsorption of phosphates and DOC showed that phosphate had much higher affinity than DOC towards LMZ. The phosphate once adsorbed on LMZ was resistant to release when exposed to conditions of either a high pH (9.5), high DOC concentration (250 mg/L) or both; i.e., only <5% of the adsorbed phosphate is releasable. Therefore, we proposed that, to avoid the coupled influence of pH and DOC in the photic layer of eutrophic shallow lakes, LMZ could be applied in multiple low doses in the season when the growth of algae is minimal (a low pH and low DOC concentration).
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Affiliation(s)
- Xiaodi Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Qiang Xie
- School of Agriculture and Biology, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Yue Kuang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Deyi Wu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China.
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19
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Tao K, Tian H, Fan J, Li D, Liu C, Megharaj M, Li H, Hu M, Jia H, He W. Kinetics and catalytic efficiency of soil fluorescein diacetate hydrolase under the pesticide parathion stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:144835. [PMID: 33548707 DOI: 10.1016/j.scitotenv.2020.144835] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
Fluorescein diacetate hydrolase (FDA-H) is an accurate biochemical method measuring the total microbial activity in soil, which indicates soil quality under ambient environmental changes such as pesticide parathion (PTH). However, the influence of PTH on the kinetics of FDA-H is still unknown. In this study, fifteen farmland soils were exposed to acute PTH pollution to investigate how the kinetic characteristics of FDA-H change with PTH concentration. Results showed that PTH strongly inhibited the FDA-H activities. The values of maximum reaction velocity (Vmax) ranged from 0.29 to 2.18 × 10-2 mM g-1 soil h-1 and declined by 42.30%-71.01% under PTH stress. The Michaelis constant (Km) values ranged between 2.90 and 14.17 × 10-2 mM and exhibited three forms including unchanged, increased (38.16-242.65%) and decreased (13.41-39.23%) when exposed to PTH. Based on the changes in two kinetic parameters, the inhibition of PTH on FDA-H was classified as three types, i.e., noncompetitive, linear mixed and uncompetitive inhibition. The competitive inhibition constant (Kic) and noncompetitive constant (Kiu) ranged from 0.064 to 0.447 mM and 0.209 to 0.723 mM, respectively, which were larger than the Km in values. The catalytic efficiency (Vmax/Km) of FDA-H is a sensitive integrated parameter to evaluate the PTH toxicity due to the higher inhibition ratio than the Vmax. The PTH toxicity to FDA-H decreased with increase of soil organic matter and total nitrogen contents. This implied that the PTH toxicity could be alleviated by an increasing content of soil organic matter due to its buffering capacity to PTH. Besides, soils with a higher content of total nitrogen could provide stable environment for FDA-H to maintain its functionality under PTH pollution. Thus, the results of this study have great implications to the risk assessment of parathion in soils.
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Affiliation(s)
- Kelin Tao
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Haixia Tian
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Jing Fan
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Dongxiao Li
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Chaoyang Liu
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation, Faculty of Science, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Huayong Li
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Min Hu
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Hanzhong Jia
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Wenxiang He
- College of Natural Resources and Environment, Northwest A&F University, Key Laboratory of Plant Nutrition and Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China.
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20
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Lv P, Meng R, Mao Z, Deng M. Hydrothermal Synthesis of Sodalite-Type N-A-S-H from Fly Ash to Remove Ammonium and Phosphorus from Water. MATERIALS 2021; 14:ma14112741. [PMID: 34067370 PMCID: PMC8196996 DOI: 10.3390/ma14112741] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 05/16/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022]
Abstract
In this study, the hydrated sodium aluminosilicate material was synthesized by one-step hydrothermal alkaline desilication using fly ash (FA) as raw material. The synthesized materials were characterized by XRD, XRF, FT-IR and SEM. The characterization results showed that the alkali-soluble desilication successfully had synthesized the sodium aluminosilicate crystalline (N-A-S-H) phase of sodalite-type (SOD), and the modified material had good ionic affinity and adsorption capacity. In order to figure out the suitability of SOD as an adsorbent for the removal of ammonium and phosphorus from wastewater, the effects of material dosing, contact time, ambient pH and initial solute concentration on the simultaneous removal of ammonium and phosphorus are investigated by intermittent adsorption tests. Under the optimal adsorption conditions, the removal rate of ammonium was 73.3%, the removal rate of phosphate was 85.8% and the unit adsorption capacity reached 9.15 mg/L and 2.14 mg/L, respectively. Adsorption kinetic studies showed that the adsorption of ammonium and phosphorus by SOD was consistent with a quasi-secondary kinetic model. The adsorption isotherm analysis showed that the equilibrium data were in good agreement with the Langmuir and Freundlich model. According to thermodynamic calculations, the adsorption of ammonium and phosphorus was found to be a heat-absorbing and spontaneous process. Therefore, the preparation of SOD by modified FA has good adsorption properties as adsorbent and has excellent potential for application in the removal of contaminants from wastewater.
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Affiliation(s)
- Pengcheng Lv
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China; (P.L.); (Z.M.)
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
| | - Ruihong Meng
- Guodian New Energy Technology Research Institute Co., Ltd., Beijing 102209, China;
| | - Zhongyang Mao
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China; (P.L.); (Z.M.)
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
| | - Min Deng
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China; (P.L.); (Z.M.)
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
- Correspondence: ; Tel.: +86-136-0518-4865
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21
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Li X, Zhang Z, Xie Q, Wu D. Effect of algae on phosphorus immobilization by lanthanum-modified zeolite. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 276:116713. [PMID: 33611205 DOI: 10.1016/j.envpol.2021.116713] [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: 11/05/2020] [Revised: 02/01/2021] [Accepted: 02/06/2021] [Indexed: 06/12/2023]
Abstract
Phosphorus-inactivating agents (PIAs) as geoengineering tools in lakes have been investigated extensively, but PIA resuspension in the photic layer occurs frequently in shallow lakes and little is known about the influence of algae on PIA performance. Our results proved that algae increased the dissolved oxygen, pH and dissolved organic carbon concentration substantially. In the absence of sediment, lanthanum modified zeolite (LMZ) as a representative PIA and algae could deplete dissolved inorganic phosphorus (DIP) from water but the former was faster than the latter. When LMZ and algae coexisted, the amount of phosphorus that was captured by LMZ was 3.1 times greater than that taken up by algae. An increase in pH or dissolved organic carbon increased the zero-equilibrium phosphorus concentration (EPC0) of the sediment but LMZ addition could lower the EPC0 and reduce the risk of phosphorus release during the algal blooming season. In the presence of sediment, LMZ reduced the DIP concentration more rapidly and yielded a lower final DIP concentration compared with algae. In conclusion, the influence of algae on the performance of LMZ by (i) taking up DIP to reduce the availability of DIP and convert DIP into a releasable phosphorus form and (ii) increasing the pH and dissolved organic carbon concentration to hinder the adsorption ability of DIP were recognized. The LMZ performed well, even in the presence of algae.
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Affiliation(s)
- Xiaodi Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Zhiyong Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Qiang Xie
- School of Agriculture and Biology, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China
| | - Deyi Wu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China.
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22
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Ding J, Sun H, Liang A, Liu J, Song L, Lv M, Zhu D. Testosterone amendment alters metabolite profiles of the soil microbial community. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:115928. [PMID: 33139098 DOI: 10.1016/j.envpol.2020.115928] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/23/2020] [Accepted: 10/24/2020] [Indexed: 05/24/2023]
Abstract
Steroid hormones are prevalent in the environment and have become emerging pollutants, but little is known about their effects on soil microbial community composition and function. In the present study, three representative soils in China were amended with environmentally relevant concentrations of testosterone and responses of soil bacterial community composition and soil function were assessed using high-throughput sequencing and nontargeted metabolomics. Our results showed that testosterone exposure significantly shifted bacterial community structure and metabolic profiles in soils at Ningbo (NB) and Kunming (KM), which may reflect high bioavailability of the hormone. Abundances of several bacterial taxa associated with nutrient cycling were reduced by testosterone and metabolites related to amino acid metabolism were downregulated. A close connection between bacterial taxa and specific metabolites was observed and confirmed by Procrustes tests and a co-occurrence network. These results provide an insight into the effects of steroid hormones on soil microbial community and highlight that nontargeted metabolomics is an effective tool for investigating the impacts of pollutants.
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Affiliation(s)
- Jing Ding
- School of Environmental and Material Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, China
| | - Hongwei Sun
- School of Environmental and Material Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, China
| | - Aiping Liang
- School of Environmental and Material Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, China
| | - Jin Liu
- School of Environmental and Material Engineering, Yantai University, 30 Qingquan Road, Yantai, 264005, China
| | - Lehui Song
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 17 Chunhui Road, Yantai, 264003, China
| | - Min Lv
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 17 Chunhui Road, Yantai, 264003, China
| | - Dong Zhu
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Beijing, 100085, China.
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Razanajatovo MR, Gao W, Song Y, Zhao X, Sun Q, Zhang Q. Selective adsorption of phosphate in water using lanthanum-based nanomaterials: A critical review. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.01.046] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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24
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Zhan Y, Chang M, Lin J. Suppression of phosphorus release from sediment using lanthanum carbonate as amendment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3280-3295. [PMID: 32914304 DOI: 10.1007/s11356-020-10714-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
The performance of lanthanum carbonate (LC) pertaining to the adsorption of phosphate (HwPO4w-3) was investigated, and the possible adsorption mechanism was elucidated. The stabilization of HwPO4w-3 adsorbed to LC was evaluated. The influence of LC addition on the upward transport of phosphorus (P) from sediment to overlying water (OL-W) was studied, and the adsorption performance of HwPO4w-3 on the LC-amended sediment was explored. The results of this work indicated that LC performed well in the elimination of HwPO4w-3 from water in the pH range of 4 to 11, and the commercial and self-prepared LC samples afforded the maximum HwPO4w-3 adsorption capacities of 57.9 and 99.4 mg P/g, respectively, at pH 7. The presence of coexisting species including chloride, bicarbonate, and sulfate had a small influence on the HwPO4w-3 adsorption onto LC. The main HwPO4w-3 adsorption mechanism of LC at pH 7 was the ligand exchange reaction between carbonate and HwPO4w-3 forming the inner-sphere La-phosphate complexation. The self-synthesized LC exhibited much higher HwPO4w-3 adsorption performance than the commercial LC. The overwhelming majority (> 97.0%) of HwPO4w-3 adsorbed to LC primarily existed in the form of muriatic acid-extractable P, which has relatively low re-releasing risk. The addition of LC into sediment could significantly prevent the release of P from the sediment solid into the OL-W, thereby leading to a lower concentration level of reactive soluble P (RSP) in the OL-W compared with no LC treatment. The addition of LC into sediment could greatly improve the HwPO4w-3 uptake ability for the sediment, and the enhancement of HwPO4w-3 adsorption onto the sediment by the added LC increased as the increase of the amendment dosage and the initial HwPO4w-3 concentration. All results suggest that LC could serve as a promising amendment material for the control of sedimentary P release.
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Affiliation(s)
- Yanhui Zhan
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China
| | - Mingyue Chang
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China
| | - Jianwei Lin
- College of Marine Ecology and Environment, Shanghai Ocean University, Hucheng Ring Road No. 999, Shanghai, 201306, China.
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25
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Kang P, Ji B, Zhao Y, Wei T. How can we trace microplastics in wastewater treatment plants: A review of the current knowledge on their analysis approaches. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 745:140943. [PMID: 32717602 DOI: 10.1016/j.scitotenv.2020.140943] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 06/11/2023]
Abstract
Microplastics (MPs), as an emerging pollutant derived from the human daily life and industry activities, have been widely detected in ecosystem. Wastewater treatment plants (WWTPs) play a special role in the mass flow of MPs because it is not only one of the important point sources of MPs, but also a way of collecting and removing MPs from wastewater. It is necessary to analyze the fate of MPs in WWTPs and the volume released into the environment. However, the lack of standard analytical methods of MPs in WWTPs limited the accuracy assessment of MPs and comparison between different studies. This review summarized the current knowledge on analysis approaches of MPs in WWTPs and proposed an analysis process. Specifically, the MPs sampling sites of wastewater and sludge treatment route is discussed. Moreover, various processing procedure for samples collection and pretreatment including extraction and purification, as well as identification and characterization of MPs are reviewed in great detail. Finally, as an important way to ensure accuracy of studies, quality assurance and control measures are presented. It should be pointed out that the overall analysis processes are interdependent and should be chosen and harmonized according to the aim of individual study. The lack of reliable and uniformity analysis methodology is the key challenge for present studies which needs further development.
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Affiliation(s)
- Peiying Kang
- Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, PR China; State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Bin Ji
- Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, PR China; State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China
| | - Yaqian Zhao
- Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, PR China; State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Ting Wei
- Department of Municipal and Environmental Engineering, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, PR China; State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, PR China; Chemical Engineering Department, University of Alcalá, Madrid, Spain
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26
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He J, Yang Y, Xu Y, Wang Z, Xu B, Huang Y, Yang L. La(OH) 3 nano-rods/polyacrylonitrile nanofibers: fabrication, characterization and application for phosphate removal. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:2098-2113. [PMID: 33263587 DOI: 10.2166/wst.2020.467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, an excellent phosphate adsorbent was prepared for removing phosphate to an extremely low concentration. The La(OH)3 nano-rods stabilizing in polyacrylonitrile (PAN) nanofibers (PLNFs) were prepared by electrospinning and a subsequent in situ precipitation. PAN nanofibers were employed as the matrix of the composite nanofibers, where the well-dispersed La(OH)3 nano-rods were encapsulated as the active species for highly efficient phosphate capture owing to the strong binding between phosphate and lanthanum. On account of the nano-structure, the maximum phosphate adsorption capacity was 151.98 mg P/g (La), much higher than the result of La(OH)3 nano-crystal, produced by precipitation without PAN or any organic surfactants. Moreover, the PLNFs could remove phosphate (2 mg P/L) to an extremely low concentration within 20 min, which could lead to a nutrient deficient condition to protect water quality and ecosystem. The optimization of PLNFs design was implemented through parameter adjustment of electrospinning. Lanthanum salt content, humidity, concentration of solution and applied voltage were chosen to analyze the influences on the composition, diameter and morphology of the nanofibers, giving the result that the most effective adsorbent was the PLNFs with spider-web-like nano-structures.
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Affiliation(s)
- Jiaojie He
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
| | - Yue Yang
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
| | - Yuhong Xu
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
| | - Zichuan Wang
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
| | - Bing Xu
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
| | - Yuheng Huang
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
| | - Liwei Yang
- School of Civil Engineering, Chang'an University, Xi'an, 710061, China E-mail:
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27
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Kong M, Liu F, Tao Y, Wang P, Wang C, Zhang Y. First attempt for in situ capping with lanthanum modified bentonite (LMB) on the immobilization and transformation of organic phosphorus at the sediment-water interface. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 741:140342. [PMID: 32886974 DOI: 10.1016/j.scitotenv.2020.140342] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/28/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
LMB is a widely utilized material for the management of sediment-derived phosphorus (P) in eutrophic lakes. However, the properties of organic P at the sediment-water interface and the effect of LMB on organic P fractions in sediments are still unclear. The batch studies reported here indicate that LMB has good adsorption properties toward organic P (Glucose-6-phosphate), and the tentative adsorption mechanism relies on chemisorption. Laboratory microcosmic experiments were conducted to study the immobilization effect of LMB on the organic P in water and sediments. The results indicated that the concentration of total P, labile P and organic P in overlying water and pore water could be effectively reduced by LMB capping of sediments. After treatment, the optimal immobilization effects appeared on the 7th day and until the 60th day. However, the fractions of organic P change during the capping time. Active organic P eluted with NaHCO3 transforms into moderately labile or non-labile P through the physical and chemical processes, as well as microbial action. Microbial community analysis showed that the addition of LMB had inhibitory effect on the phosphorus-solubilizing bacteria, which also affected the transformation between various forms of organic P. This study provided new insights of LMB in situ capping of organic P and the mechanisms of the migration and cycling of internal organic P, which is beneficial for the management of eutrophic lakes.
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Affiliation(s)
- Ming Kong
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China.
| | - Feifei Liu
- Huai'an Water Resources Survey and Design Institute Co., Ltd, China
| | - Yue Tao
- China design group co., LTD, Nanjing 21000, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China.
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China
| | - Yimin Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
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28
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Yin H, Yang P, Kong M, Li W. Preparation of the Lanthanum-Aluminum-Amended Attapulgite Composite as a Novel Inactivation Material to Immobilize Phosphorus in Lake Sediment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:11602-11610. [PMID: 32815724 DOI: 10.1021/acs.est.0c03277] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, a green solvent-free drying production method was used to prepare an attapulgite clay/lanthanum and aluminum (ACLA) composite as a novel phosphorus (P) sorbent to immobilize P in lake sediment. The prepared sorbent contained around 5% La and 2% Al. The maximum P sorption capacity of ACLA can reach as high as 34.6 mg P/g and is higher than most clay-based P sorbents. The addition of ACLA into sediment can effectively reduce sediment mobile P and simultaneously induce elevated inert P forms of HCl-P and NaOH-rP, which also can increase the stability of P in sediment. Long-term sediment core incubation indicated that 72.2% of total phosphorus and 90.7% of soluble reactive phosphate (SRP), as well as 44.2% SRP fluxes, can be reduced with a dosage of 466 mg/m2 of ACLA when compared with the control treatment. The P binding mechanism by ACLA is assigned to the intersphere P complexes and is mainly because of the formation of rhabdophane and aluminum phosphate precipitation on ACLA. This is confirmed by results of the XPS and 31P NMR spectroscopy, which indicate that the La/Al coexisting novel P inactivation agents are a promising sorbent for lake sediment P control.
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Affiliation(s)
- Hongbin Yin
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, People's Republic of China
| | - Pan Yang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, People's Republic of China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
| | - Ming Kong
- Ministry of Ecology and Environment, Nanjing Institute of Environmental Sciences, 8 Jiangwangmiao 10 Street, 210042 Nanjing, People's Republic of China
| | - Wei Li
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, People's Republic of China
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29
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Li X, Kuang Y, Chen J, Wu D. Competitive adsorption of phosphate and dissolved organic carbon on lanthanum modified zeolite. J Colloid Interface Sci 2020; 574:197-206. [DOI: 10.1016/j.jcis.2020.04.050] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/14/2020] [Accepted: 04/11/2020] [Indexed: 11/15/2022]
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30
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Trotochaud L, Hawkins BT, Stoner BR. Non-biological methods for phosphorus and nitrogen removal from wastewater: A gap analysis of reinvented-toilet technologies with respect to ISO 30500. Gates Open Res 2020; 3:559. [PMID: 32494770 PMCID: PMC7232852 DOI: 10.12688/gatesopenres.12931.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2020] [Indexed: 12/20/2022] Open
Abstract
The aims of the Reinvent the Toilet Challenge (RTTC) include creation of an off-the-grid sanitation system with operating costs of less than US$0.05 per user per day. Because of the small scale at which many reinvented toilets (RT) are intended to operate, non-biological treatment has been generally favored. The RTTC has already instigated notable technological advances in non-sewered sanitation systems (NSSS). However, increasingly stringent liquid effluent standards for N and P could limit the deployment of current RT in real-world scenarios, despite the urgent need for these systems. The newly adopted ISO 30500 standards for water reuse in NSSS dictate minimal use of chemical/biological additives, while at the same time requiring a 70% and 80% reduction in total nitrogen and phosphorus, respectively. This document provides a brief overview of the mature and emerging technologies for N and P (specifically ammonia/ammonium and orthophosphate) removal from wastewater. At present, the dearth of nutrient removal methods proven to be effective at small scales is a significant barrier to meeting ISO 30500 standards. Closing the gap between RTs and ISO 30500 will require significant investments in basic R&D of emerging technologies for non-biological N and P remediation and/or increased reliance on biological processes. Adaptation of existing nutrient-removal technologies to small-scale NSSS is a viable option that merits additional investigation.
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Affiliation(s)
- Lena Trotochaud
- Center for WaSH-AID, Duke University, Durham, NC, 27701, USA
| | | | - Brian R. Stoner
- Center for WaSH-AID, Duke University, Durham, NC, 27701, USA
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31
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Faheem M, Shabbir S, Zhao J, Kerr PG, Sultana N, Jia Z. Enhanced Adsorptive Bioremediation of Heavy Metals (Cd 2+, Cr 6+, Pb 2+) by Methane-Oxidizing Epipelon. Microorganisms 2020; 8:microorganisms8040505. [PMID: 32244762 PMCID: PMC7232255 DOI: 10.3390/microorganisms8040505] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/28/2020] [Accepted: 03/30/2020] [Indexed: 12/01/2022] Open
Abstract
Cadmium (Cd), chromium (Cr) and lead (Pb) are heavy metals that have been classified as priority pollutants in aqueous environment while methane-oxidizing bacteria as a biofilter arguably consume up to 90% of the produced methane in the same aqueous environment before it escapes into the atmosphere. However, the underlying kinetics and active methane oxidizers are poorly understood for the hotspot of epipelon that provides a unique micro-ecosystem containing diversified guild of microorganisms including methane oxidizers for potential bioremediation of heavy metals. In the present study, the Pb2+, Cd2+and Cr6+ bioremediation potential of epipelon biofilm was assessed under both high (120,000 ppm) and near-atmospheric (6 ppm) methane concentrations. Epipelon biofilm demonstrated a high methane oxidation activity following microcosm incubation amended with a high concentration of methane, accompanied by the complete removal of 50 mg L−1 Pb2+ and 50 mg L−1 Cd2+ (14 days) and partial (20%) removal of 50 mg L−1 Cr6+ after 20 days. High methane dose stimulated a faster (144 h earlier) heavy metal removal rate compared to near-atmospheric methane concentrations. DNA-based stable isotope probing (DNA-SIP) following 13CH4 microcosm incubation revealed the growth and activity of different phylotypes of methanotrophs during the methane oxidation and heavy metal removal process. High throughput sequencing of 13C-labelled particulate methane monooxygenase gene pmoA and 16S rRNA genes revealed that the prevalent active methane oxidizers were type I affiliated methanotrophs, i.e., Methylobacter. Type II methanotrophs including Methylosinus and Methylocystis were also labeled only under high methane concentrations. These results suggest that epipelon biofilm can serve as an important micro-environment to alleviate both methane emission and the heavy metal contamination in aqueous ecosystems with constant high methane fluxes.
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Affiliation(s)
- Muhammad Faheem
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (M.F.); (J.Z.); (N.S.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sadaf Shabbir
- College of Environment, Hohai University, Nanjing 210098, China;
| | - Jun Zhao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (M.F.); (J.Z.); (N.S.)
| | - Philip G. Kerr
- School of Biomedical Science, Charles Sturt University, Wagga Wagga, NSW 2678, Australia;
| | - Nasrin Sultana
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (M.F.); (J.Z.); (N.S.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhongjun Jia
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; (M.F.); (J.Z.); (N.S.)
- Correspondence:
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32
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Wang Y, Lu X, Fan P, Huang X, Li B, Wang W, Zhao J. Effects of different dosing modes of calcium nitrate on P locking in sediment and nutrient concentrations in waters. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:7504-7514. [PMID: 31884534 DOI: 10.1007/s11356-019-07382-2] [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: 08/20/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
Sediment is an endogenous pollution source, which often leads water systems to eutrophication due to the release of nutrients, especially phosphorus (P). Calcium nitrate (CN) was dosed to the water systems under different modes to control P release from the sediments in this study. A 63-day static laboratory test was conducted to explore the effects of intermittent dosing and one-time dosing modes of CN on P locking in the sediment and the concentrations of nitrogen (N) and P in waters. Results showed that 89% total phosphorus (TP) in the overlying water and 91% TP in the interstitial water of sediment were reduced in the intermittent dosing reactor, which were 4% and 13% higher than those in the one-time dosing reactor, respectively. Thus, the concentration of TP in the overlying water of the dosing reactors was both below 0.1 mg/L during the whole experiment. Meanwhile, the mean values of oxidation-reduction potential (ORP) in the sediment increased to - 110.7 ± 42.02 mV when CN was added intermittently, which were significantly higher than those of the one-time dosing reactor (- 158.3 ± 44.61 mV) and control reactor (- 320.7 ± 0.05 mV). Compared with one-time dosing mode, the intermittent dosing not only reduced the maximum concentrations of NO2--N from 9.21 to 1.79 mg/L and NO3--N from 92.42 to 27.58 mg/L but also shorten their retention time in the overlying water, which might depress the toxic threats to aquatic animals in water environments. Therefore, the intermittent dosing of CN could not only improve the P locking effect but also minimize the risks to aquatic animals in water environments under the premise of reasonable dosage selected. In a word, this research provided an effective operation mode for locking P with CN in the heavily polluted water bodies, which is also advantageous to avoid toxic threats to aquatic animals in water environment.
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Affiliation(s)
- Yi Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Beilin District, Xi'an, 710055, Shaanxi, China.
| | - Xinxin Lu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Beilin District, Xi'an, 710055, Shaanxi, China
| | - Pan Fan
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Beilin District, Xi'an, 710055, Shaanxi, China
| | - Xiaozhong Huang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Beilin District, Xi'an, 710055, Shaanxi, China
| | - Binjuan Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Beilin District, Xi'an, 710055, Shaanxi, China
| | - Wenhuai Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Beilin District, Xi'an, 710055, Shaanxi, China
| | - Jingchan Zhao
- College of Chemistry &Materials Science, Northwest University, Xi'an, 710069, China
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Li X, Zhang Z, Xie Q, Yang R, Guan T, Wu D. Immobilization and Release Behavior of Phosphorus on Phoslock-Inactivated Sediment under Conditions Simulating the Photic Zone in Eutrophic Shallow Lakes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:12449-12457. [PMID: 31573182 DOI: 10.1021/acs.est.9b04093] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phosphorus-inactivating agents (PIAs) have increasingly been applied and extensively investigated to control internal phosphorus loading in lakes. However, little is known about the behavior of PIA-amended sediment in terms of phosphorus immobilization and release when the sediment is resuspended in the photic layer, whose environment differs from the lake bed. Lanthanum-modified bentonite (LMB) is a popular PIA product. In this study, the 33 day core incubation experiment under dark conditions showed that capping sediment with LMB efficiently decreased the concentration of total phosphorus, total dissolved phosphorus, and dissolved inorganic phosphorus (DIP) by 90, 87, and 99%, respectively. Resuspension into overlying water under light conditions at high pH, high dissolved organic carbon, and in the presence of algae significantly impedes the performance of LMB. However, the adoption of a higher LMB dose improved the performance, including a reduction in the phosphorus level and control of algal growth. The dynamics of the phosphorus migration when the LMB-inactivated sediment was resuspended into the photic zone mainly involves the release of DIP from the sediment and the uptake of DIP by algae and LMB. In conclusion, a higher dose is needed in the PIA (particularly Phoslock) application in shallow productive lakes where sediment resuspension occurs frequently.
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Affiliation(s)
- Xiaodi Li
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , No. 800, Dongchuan Road , Shanghai 200240 , China
| | - Zhiyong Zhang
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , No. 800, Dongchuan Road , Shanghai 200240 , China
| | - Qiang Xie
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , No. 800, Dongchuan Road , Shanghai 200240 , China
| | - Renjie Yang
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , No. 800, Dongchuan Road , Shanghai 200240 , China
| | - Tong Guan
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , No. 800, Dongchuan Road , Shanghai 200240 , China
| | - Deyi Wu
- School of Environmental Science and Engineering , Shanghai Jiao Tong University , No. 800, Dongchuan Road , Shanghai 200240 , China
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Trotochaud L, Hawkins BT, Stoner BR. Non-biological methods for phosphorus and nitrogen removal from wastewater: A gap analysis of reinvented-toilet technologies with respect to ISO 30500. Gates Open Res 2019; 3:559. [PMID: 32494770 PMCID: PMC7232852 DOI: 10.12688/gatesopenres.12931.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2019] [Indexed: 12/24/2022] Open
Abstract
The aims of the Reinvent the Toilet Challenge (RTTC) include creation of an off-the-grid sanitation system with operating costs of less than US$0.05 per user per day. Because of the small scale at which many reinvented toilets (RT) are intended to operate, non-biological treatment has been generally favored. The RTTC has already instigated notable technological advances in non-sewered sanitation systems (NSSS). However, increasingly stringent effluent standards for N and P could limit the deployment of current RT in real-world scenarios, despite the urgent need for these systems. The newly adopted ISO 30500 standards for water reuse in NSSS dictate minimal use of chemical/biological additives, while at the same time requiring a 70% and 80% reduction in total nitrogen and phosphorus, respectively. This document provides a brief overview of the mature and emerging technologies for N and P removal from wastewater. At present, the dearth of nutrient removal methods proven to be effective at small scales is a significant barrier to meeting ISO 30500 standards. Closing the gap between RTs and ISO 30500 will require significant investments in basic R&D of emerging technologies for non-biological N and P remediation and/or increased reliance on biological processes. Adaptation of existing nutrient-removal technologies to small-scale NSSS is a viable option that merits additional investigation.
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Affiliation(s)
- Lena Trotochaud
- Center for WaSH-AID, Duke University, Durham, NC, 27701, USA
| | | | - Brian R. Stoner
- Center for WaSH-AID, Duke University, Durham, NC, 27701, USA
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