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Yu X, Wang X, Sun M, Liu H, Liu D, Dai J. Cadmium immobilization in soil using phosphate modified biochar derived from wheat straw. Sci Total Environ 2024; 926:171614. [PMID: 38508276 DOI: 10.1016/j.scitotenv.2024.171614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/29/2024] [Accepted: 03/08/2024] [Indexed: 03/22/2024]
Abstract
The phosphate-modified biochar (BC) immobilizes cadmium (Cd), yet little is known about how phosphate species affect Cd detoxification in contaminated soils. We developed phosphate-modified biochar through the pyrolysis of wheat straw impregnated with three types of phosphate: mono‑potassium phosphate (MKP), dipotassium hydrogen phosphate (DKP), and tripotassium phosphate (TKP). The Cd adsorption mechanism of modified biochar was investigated by biochar characterization, adsorption performance evaluation, and soil incubation tests. The results demonstrated that the efficiency of biochar in immobilizing Cd2+ followed the order: TKP-BC > DKP-BC > MKP-BC. The TKP-BC had the highest orthophosphate content, the fastest adsorption rate, and the largest adsorption capacity (Langmuir) of 257.28 mg/g, which is 6.31 times higher than that of the unmodified BC (CK). In contrast, pyrophosphate was predominant in MKP-BC and DKP-BC. The primary adsorption mechanism for Cd2+ was precipitation, followed by cation exchange, as evidenced by the formation of CdP minerals on the BC surface, and an increase of K+ in solution (compared to water-soluble K+) and a decrease of K+ in the biochar during adsorption. Desorption of Cd from the TKP-BC after adsorption was 9.77 %-12.39 % at a pH of 5-9, much lower than that of CK. The soil incubation test showed the diethylenetriaminepentaacetic acid extracted Cd of TKP-BC, MKP-BC, and DKP-BC was reduced by 67.93 %, 18.41 % and 31.30 % over CK, respectively. Using the planar optodes technique, we also found that TKP-BC had the longest effect enhancing in situ soil pH. This study provides a theoretical basis for developing heavy metal pollution control technology using green remediation materials and offers insights into the remediation mechanisms.
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Affiliation(s)
- Xiaojing Yu
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Xiaorou Wang
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Mei Sun
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - He Liu
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Dongmei Liu
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Jiulan Dai
- Environment Research Institute, Shandong University, Qingdao 266237, China.
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Hu Y, Chen M, Pu J, Chen S, Li Y, Zhang H. Enhancing phosphorus source apportionment in watersheds through species-specific analysis. Water Res 2024; 253:121262. [PMID: 38367374 DOI: 10.1016/j.watres.2024.121262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/29/2024] [Accepted: 02/03/2024] [Indexed: 02/19/2024]
Abstract
Phosphorus (P) is a pivotal element responsible for triggering watershed eutrophication, and accurate source apportionment is a prerequisite for achieving the targeted prevention and control of P pollution. Current research predominantly emphasizes the allocation of total phosphorus (TP) loads from watershed pollution sources, with limited integration of source apportionment considering P species and their specific implications for eutrophication. This article conducts a retrospective analysis of the current state of research on watershed P source apportionment models, providing a comprehensive evaluation of three source apportionment methods, inventory analysis, diffusion models, and receptor models. Furthermore, a quantitative analysis of the impact of P species on watersheds is carried out, followed by the relationship between P species and the P source apportionment being critically clarified within watersheds. The study reveals that the impact of P on watershed eutrophication is highly dependent on P species, rather than absolute concentration of TP. Current research overlooking P species composition of pollution sources may render the acquired results of source apportionment incapable of assessing the impact of P sources on eutrophication accurately. In order to enhance the accuracy of watershed P pollution source apportionment, the following prospectives are recommended: (1) quantifying the P species composition of typical pollution sources; (2) revealing the mechanisms governing the migration and transformation of P species in watersheds; (3) expanding the application of traditional models and introducing novel methods to achieve quantitative source apportionment specifically for P species. Conducting source apportionment of specific species within a watershed contributes to a deeper understanding of P migration and transformation, enhancing the precise of management of P pollution sources and facilitating the targeted recovery of P resources.
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Affiliation(s)
- Yuansi Hu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Mengli Chen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Jia Pu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
| | - Sikai Chen
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Yao Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Han Zhang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.
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3
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Jin J, Fang Y, Liu C, Eltohamy KM, He S, Li F, Lu Y, Liang X. Reduced colloidal phosphorus release from paddy soils: A synergistic effect of micro-/nano-sized biochars and intermittent anoxic condition. Sci Total Environ 2023; 905:167104. [PMID: 37717774 DOI: 10.1016/j.scitotenv.2023.167104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/09/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023]
Abstract
Colloidal phosphorus (CP) has high mobility and great loss risk; their biogeochemical processes are influenced by agricultural management such as redox oscillation and biochar-amendment application. This study monitored CP concentration in pore-water, soil P species and P adsorption capacity, to investigate CP release from paddy soils as affected by the interactive effects of oxygen status (continuous anoxic/oxic for 12 days, CA/CO; intermittent anoxic for 2, 4, 6, 8, 10 days during the 12-day cycle, IA2-10) and management (soil only, CK; bulk/micro/nano-sized biochar with various properties: SBBulk, SBMicro, and SBNano). Compared to the control (0.25-0.84 mg L-1, CK-CA), the single intermittent anoxic treatment (CK-IA) reduced CP concentrations by 45 %, due to the rise of Eh and pH and the decline of the degree of P saturation along with the increased soil Fe/Al-P and organic-P. Longer anoxic duration under the CK-IA reduced CP release, probably donated from massive production of redox-stable amorphous Fe/Al-bound P. The single biochar treatment (SB-CA: SBBulk-CA > SBMicro-CA > SBNano-CA) decreased CP release by 37 % as compared to the CK-CA, ascribed to the increased soil pH, Eh, and P adsorption capacity. The combined treatment (SB-IA: SBBulk-IA2 > SBNano-IA10) synergistically reduced CP release by 68 % in comparison with the CK-CA, due to the increase of adsorption through interactions of soil Fe/Al/Ca- and organic-P. Therefore, nano-sized biochar and long intermittent anoxic duration are recommended for reducing CP release from paddy soils.
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Affiliation(s)
- Junwei Jin
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Yunying Fang
- Australian Rivers Institute, School of Environment and Science, Griffith University, Nathan, Campus, Queensland 4111, Australia
| | - Chunlong Liu
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 130102, PR China
| | - Kamel Mohamed Eltohamy
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Shuang He
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Fayong Li
- College of Water Resources and Architectural Engineering, Tarim University, Xinjiang 843300, PR China
| | - Yuanyuan Lu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Xinqiang Liang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, PR China; Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 130102, PR China.
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Wang L, Zhou J, Jia Q, Ma X, Zhao Y, Gong L, Zhang H. Anaerobic digestion of hydrothermally pretreated dewatered sewage sludge: effects of process conditions on methane production and the fate of phosphorus. Environ Sci Pollut Res Int 2023; 30:66767-66780. [PMID: 37099108 DOI: 10.1007/s11356-023-26990-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 04/09/2023] [Indexed: 05/25/2023]
Abstract
The hydrothermal pretreatment (HTP) characteristics and the fate of phosphorus (P) and anaerobic digestion (AD) performance of dewatered sewage sludge (DSS) were investigated at different hydrothermal conditions. The maximum methane yield reached 241 mL CH4/g COD when the hydrothermal conditions were 200 °C-2 h-10% (A4), and the yield was 78.28% higher than that without pretreatment (A0) and 29.62% higher than that of the initial hydrothermal conditions (A1, 140 °C-1 h-5%). Proteins, polysaccharides, and volatile fatty acids (VFAs) were the main hydrothermal products of DSS. 3D-EEM analysis revealed that tyrosine, tryptophan proteins, and fulvic acids decreased after HTP, but the content of humic acid-like substances increased, and this phenomenon was more noticeable after AD. Solid-organic P was converted into liquid-P during the hydrothermal process, and nonapatite inorganic P was converted into organic P during AD. All samples achieved positive energy balance, and the energy balance of A4 was 10.50 kJ/g VS. Microbial analysis showed that the composition of the anaerobic microbial degradation community changed as the sludge organic composition was altered. Results showed that the HTP improved the anaerobic digestion of DSS.
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Affiliation(s)
- Luyu Wang
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China
| | - Jun Zhou
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China
| | - Qinwei Jia
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China
| | - Xiaofan Ma
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China
| | - Yuhang Zhao
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China
| | - Lei Gong
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China.
| | - Haonan Zhang
- School of Environmental Engineering, Faculty of Environmental and Safety Engineering, Qingdao University of Science and Technology, 53, Zhengzhou Road, Qingdao, 266042, Shandong Province, China
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Huang MQ, Cui YW, Huang JL, Sun FL, Chen S. A novel Pseudomonas aeruginosa strain performs simultaneous heterotrophic nitrification-aerobic denitrification and aerobic phosphate removal. Water Res 2022; 221:118823. [PMID: 35820312 DOI: 10.1016/j.watres.2022.118823] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/08/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
Nitrogen and phosphate removal from wastewater relies on different functional bacteria. In this study, a novel strain affiliated with Pseudomonas aeruginosa was isolated from activated sludge by gradient dilution and performed heterotrophic nitrification-aerobic denitrification and aerobic phosphate removal (HNADPR). The strain showed an ammonium removal efficiency of 87% and a phosphate removal efficiency of 97% under optimal conditions, such as C/N ratio of 10, P/N ratio of 0.1, temperature of 30°C, and pH of 7.5-8.5. The modified Gompertz model could fit well the heterotrophic ammonium nitrification, aerobic nitrite/nitrate denitrification, and aerobic phosphate removal processes. Functional gene amplification indicated that ammonium removal followed the complete HN-AD pathway (NH4+ → NH2OH → NO2- → NO3- → NO2- → NO → N2O → N2). Phosphate removal only occurred under aerobic conditions and ceased under anaerobic conditions. In successive aerobic cycles, the strain persistently took up phosphate. In wastewater, phosphate was aerobically converted into cell membrane, intracellular and extracellular polymeric substrates (EPS). Phosphorus in the form of phosphate monoester was pooled in EPS. A hypothetic aerobic phosphate removal model for strain SNDPR-01 is proposed to improve our understanding of the novel bacterial function of HNADPR.
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Affiliation(s)
- Mei-Qi Huang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - You-Wei Cui
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.
| | - Ji-Lin Huang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Feng-Long Sun
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Si Chen
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
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Li S, Lin Z, Liu M, Jiang F, Chen J, Yang X, Wang S. Effect of ferric chloride on phosphorus immobilization and speciation in Dianchi Lake sediments. Ecotoxicol Environ Saf 2020; 197:110637. [PMID: 32315789 DOI: 10.1016/j.ecoenv.2020.110637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/08/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
Immobilization of phosphorus in lake sediments and control of internal-loading phosphorus release have become crucial aspects of eutrophication lake management. In this study, the immobilization efficiency of phosphorus by ferric chloride in Dianchi Lake sediments was investigated. In addition, effects of the dosage of ferric chloride and contact time on the release of phosphorus from sediments were investigated. Laboratory experiments revealed that ferric chloride can effectively inhibit the release of phosphorus from sediments. At a ferric chloride dosage of 10 mg/g, the total phosphorus concentration of the overlying water was reduced by ~87%. With the increase in the contact time, the amount of phosphorus immobilized by ferric chloride increased. To further evaluate the feasibility of ferric chloride for immobilising phosphorus in sediments, an amplification experiment with a water volume of 50 L was carried out. By the addition of 6 mg/g of ferric chloride, the total phosphorus concentration of the overlying water was still less than 0.01 mg/L after 100 days. At the same time, the phosphorus species in the sediment after treatment with ferric chloride were analyzed. Results revealed that ferric chloride mainly converts unstable exchangeable phosphorus (Ex-P), ferric phosphate (Fe-P) and organic phosphorus (Or-P) into more stable occluded phosphate (O-P), reducing the possible release of phosphorus from sediments. Practical applications of ferric chloride to control the release of phosphorus from Dianchi Lake sediments were discussed.
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Affiliation(s)
- Shengjian Li
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Zhiguo Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Meng Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Fengzhi Jiang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Jing Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Xiangjun Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China.
| | - Shixiong Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China.
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Batista Dos Santos Espinelli Junior J, von Brixen Montzel Duarte da Silva G, Branco Bastos R, Badiale Furlong E, Carapelli R. Evaluation of the influence of cultivation on the total magnesium concentration and infusion extractability in commercial arabica coffee. Food Chem 2020; 327:127012. [PMID: 32464457 DOI: 10.1016/j.foodchem.2020.127012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 05/01/2020] [Accepted: 05/06/2020] [Indexed: 11/17/2022]
Abstract
Coffee is considered an important source of organic nutrients and minerals, and these resources are strongly affected by agricultural management. Among the minerals, the element Mg is important, which is essential for both plants and humans. In this work, the effects of agricultural management on the absorption and storage of Mg by commercial, ground, roasted Arabica coffee were investigated. For this purpose, some Mg and P fractions were evaluated. It was observed that Mg stored in the grain was concentrated in the inorganic fraction, with an average extraction of 102% and in conventional samples and 119% in organic samples. These results suggest that in these samples Mg is probably largely presented as different inorganic salts. Phytate and organic acid salts are two possibilities discussed in this work that could explain this hypothesis. This can be corroborated by the extraction of Mg in the infusion of hot water.
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Affiliation(s)
- João Batista Dos Santos Espinelli Junior
- Laboratório de Eletro Espectro Analítica, Escola de Química e Alimentos, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 8, Bairro Carreiros, Rio Grande, RS CEP 96203 900, Brazil
| | - Guilherme von Brixen Montzel Duarte da Silva
- Laboratório de Eletro Espectro Analítica, Escola de Química e Alimentos, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 8, Bairro Carreiros, Rio Grande, RS CEP 96203 900, Brazil
| | - Renan Branco Bastos
- Laboratório de Eletro Espectro Analítica, Escola de Química e Alimentos, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 8, Bairro Carreiros, Rio Grande, RS CEP 96203 900, Brazil
| | - Eliana Badiale Furlong
- Laboratório de Micotoxinas e Ciência de Alimentos, Escola de Química e Alimentos, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 8, Bairro Carreiros, Rio Grande, RS CEP 96203 900, Brazil
| | - Rodolfo Carapelli
- Laboratório de Eletro Espectro Analítica, Escola de Química e Alimentos, Universidade Federal do Rio Grande (FURG), Avenida Itália, km 8, Bairro Carreiros, Rio Grande, RS CEP 96203 900, Brazil.
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8
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Wang S, Rao W, Qian J, Mao C, Li K. Phosphorus species in bottom sediments of the Three Gorges Reservoir during low and high water level periods. Environ Sci Pollut Res Int 2020; 27:17923-17934. [PMID: 32166687 DOI: 10.1007/s11356-020-08348-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Eutrophication and algal blooms have recently been found in the backwater areas of some tributaries in the Three Gorges Reservoir (TGR), for which phosphorus (P) is an important driving factor. However, P species in the TGR sediments at different water levels were little known. In this study, five P species of the TGR sediments during the high and low water level periods were analyzed with a sequential extraction method. The total P (TP) concentrations were 714.88 ± 37.86 μg/g and 697.57 ± 111.49 μg/g at the low and high water levels, respectively. The concentrations of P species decreased in the orders detrital P > authigenic P > organic P > iron-bound P > exchangeable P at the low water level and detrital P > organic P > authigenic P > iron-bound P > exchangeable P at the high water level. P in the TGR sediment sourced mainly from the upstream input at the low water level but from the inputs of tributaries and hillslope soils at the high water level. The bioavailable P (BAP) possessed > 29.5% of total P in the two periods. The total storages of total P and BAP were estimated to be about 1.34 × 106 t and 1.77 × 105 t, respectively during 2003-2017. It was further found that the BAP concentration significantly increased from periods I (2003-2009), II (2010-2014), to III (2015-2017), while the deposition flux and storage of BAP were the highest in period II. Our findings provide new insight into the P cycle and benefit eutrophication treatment in the TGR.
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Affiliation(s)
- Shuai Wang
- College of Earth Sciences and Engineering, Hohai University, Nanjing, 211100, China
| | - Wenbo Rao
- College of Earth Sciences and Engineering, Hohai University, Nanjing, 211100, China.
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China.
- College of Environment, Hohai University, Nanjing, 210098, China.
| | - Changping Mao
- College of Earth Sciences and Engineering, Hohai University, Nanjing, 211100, China
| | - Kun Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, China
- College of Environment, Hohai University, Nanjing, 210098, China
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Luo Y, Li R, Sun X, Liu X, Li D. The roles of phosphorus species formed in activated biochar from rice husk in the treatment of landfill leachate. Bioresour Technol 2019; 288:121533. [PMID: 31158778 DOI: 10.1016/j.biortech.2019.121533] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/17/2019] [Accepted: 05/20/2019] [Indexed: 06/09/2023]
Abstract
Untreated landfill leachate is a threat to the environment. Here, the phosphoric acid activated biochars prepared from rice husk were successfully used for leachate treatment to achieve a high removal of color (100%), pollutants (>90%), chemical oxygen demand (∼80%) and NH4+-N (100%). The leachate treatment process on phosphoric acid activated biochar could be well described by the pseudo-second order and Langmuir isotherm model, and it was controlled by external mass transfer followed by intra-particle diffusion. The phosphorus species formed in activated biochar could adjust and control the textural properties and structures of biochar, while the phosphorus species of activated biochar could attract humic acid-like organics in the leachate via hydrogen bond and π-π interactions, which were found to significantly enhance the treatment of leachate. The findings provided important insights for efficient treatment of wastewater using agricultural waste residues on an industrial scale.
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Affiliation(s)
- Yiping Luo
- Key Laboratory of Environmental and Applied Microbiology, CAS; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9, Section 4, Renmin Nan Road, Chengdu, Sichuan 610041, PR China
| | - Ruiling Li
- Key Laboratory of Environmental and Applied Microbiology, CAS; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9, Section 4, Renmin Nan Road, Chengdu, Sichuan 610041, PR China; College of Engineering, Northeast Agricultural University, No. 600, Changjiang Road, Xiangfang District, Harbin, Heilongjiang 150030, PR China
| | - Xiaoying Sun
- Key Laboratory of Environmental and Applied Microbiology, CAS; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9, Section 4, Renmin Nan Road, Chengdu, Sichuan 610041, PR China
| | - Xiaofeng Liu
- Key Laboratory of Environmental and Applied Microbiology, CAS; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9, Section 4, Renmin Nan Road, Chengdu, Sichuan 610041, PR China
| | - Dong Li
- Key Laboratory of Environmental and Applied Microbiology, CAS; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9, Section 4, Renmin Nan Road, Chengdu, Sichuan 610041, PR China.
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Peng Y, Tian C, Chi M, Yang H. Distribution of phosphorus species and their release risks in the surface sediments from different reaches along Yellow River. Environ Sci Pollut Res Int 2019; 26:28202-28209. [PMID: 31363974 DOI: 10.1007/s11356-019-06026-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
In order to further explore the relationship between water body eutrophication of some reaches of Yellow River and phosphorus species in sediments, and evaluate phosphorus release potential from sediments to overlying water, we investigated the distribution of P species and their release risk in the surface sediments from different reaches along Yellow River, as well as the influence of artificial dam on phosphorus cycle in Yellow River. The results show that the content of calcium phosphorus (PCa) is higher than the content of bioavailable phosphorus (BP) (BP = Pex + PFe; in the formula, Pex means exchangeable phosphorus and PFe means iron phosphorus) in the surface sediments from Yellow River. Among all the surface sediment samples from 21 stations, only Dayudu section (H15) has a ratio of W (BP)/W (PCa) higher than 0.5; the results show that the intensity of phosphorus release from H15 is high, and there is a potential risk of eutrophication in water, while the phosphorus release level of water sediment in other reaches of Yellow River is low. The content of BP and total phosphorus (∑P) in surface sediments along the Yellow River is in descending order: middle reaches of Yellow River > upper reaches of Yellow River > Yellow River downstream, while the content order of total phosphorus (TP) in the overlying water is as follows: Yellow river downstream > middle reaches of Yellow River > upper reaches of Yellow River (except the H7 station), indicating that extensive artificial corresponding damming in Yellow River basin makes the concentration of TP increasing significantly in overlying from upstream to downstream. The establishment of Haibowan water conservancy project in Yellow River makes the total particulate matter (TPM) concentration in the water to reduce to very low lever in Wuhai H7 section, and the phosphorus concentration in the overlying water reaches 0.136 mg L-1.
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Affiliation(s)
- Yuheng Peng
- Chemistry and Environment Science College of Inner Mongolia Normal University, Huhhot, 010022, China
| | - Chuchen Tian
- Chemistry and Environment Science College of Inner Mongolia Normal University, Huhhot, 010022, China
| | - Mengxue Chi
- Chemistry and Environment Science College of Inner Mongolia Normal University, Huhhot, 010022, China
| | - Hongwei Yang
- Chemistry and Environment Science College of Inner Mongolia Normal University, Huhhot, 010022, China.
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Wang Y, Liu X, Huang J, Xiao W, Zhang J, Yin C. Effect of phosphorus addition on the reductive transformation of pentachlorophenol (PCP) and iron reduction with microorganism involvement. Environ Sci Pollut Res Int 2017; 24:22852-22860. [PMID: 28444568 DOI: 10.1007/s11356-017-9062-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
The transformation of phosphorus added to the soil environment has been proven to be influenced by the Fe biochemical process, which thereby may affect the transformation of organic chlorinated contaminants. However, the amount of related literatures regarding this topic is limited. This study aimed to determine the effects of phosphorus addition on pentachlorophenol (PCP) anaerobic transformation, iron reduction, and paddy soil microbial community structure. Results showed that the transformation of phosphorus, iron, and PCP were closely related to the microorganisms. Moreover, phosphorus addition significantly influenced PCP transformation and iron reduction, which promoted and inhibited these processes at low and high concentrations, respectively. Both the maximum reaction rate of PCP transformation and the maximum Fe(II) amount produced were obtained at 1 mmol/L phosphorus concentration. Among the various phosphorus species, dissolved P and NaOH-P considerably changed, whereas only slight changes were observed for the remaining phosphorus species. Microbial community structure analysis demonstrated that adding low concentration of phosphorus promoted the growth of Clostridium bowmanii, Clostridium hungatei, and Clostridium intestinale and Pseudomonas veronii. By contrast, high-concentration phosphorus inhibited growth of these microorganisms, similar to the curves of PCP transformation and iron reduction. These observations indicated that Clostridium and P. veronii, especially Clostridium, played a vital role in the transformation of related substances in the system. All these findings may serve as a reference for the complicated reactions among the multiple components of soils.
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Affiliation(s)
- Yongkui Wang
- College of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, 435003, China.
- Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, Hubei, 435003, China.
| | - Xianli Liu
- College of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
- Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
| | - Jiexun Huang
- College of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
- Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
| | - Wensheng Xiao
- College of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
- Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
| | - Jiaquan Zhang
- College of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
- Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
| | - Chunqin Yin
- College of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
- Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi, Hubei, 435003, China
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12
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He ZW, Liu WZ, Wang L, Tang CC, Guo ZC, Yang CX, Wang AJ. Clarification of phosphorus fractions and phosphorus release enhancement mechanism related to pH during waste activated sludge treatment. Bioresour Technol 2016; 222:217-225. [PMID: 27718404 DOI: 10.1016/j.biortech.2016.10.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/30/2016] [Accepted: 10/02/2016] [Indexed: 05/24/2023]
Abstract
This study aimed to clarify phosphorus (P) fractions in waste activated sludge (WAS) and explore release performance and enhancement mechanism of different P species related to pH. Results showed that inorganic P (IP) was the major P fraction in raw sludge (87.86% of total solid P), and non-apatite inorganic P (NAIP), the most labile P forms, occupied 81.30% of IP, suggesting that WAS could be selected as potential substitution of phosphate rock. The optimized acid and alkaline conditions were pH=4 and pH=12 for molybdate reactive P accumulation, increased by 311.20mg/L and 479.18mg/L compared to raw sludge, which were 3.80 and 5.84 times higher than that of control, respectively. The mechanism study demonstrated that high pH promoted NAIP release, and apatite P was sensitive to low pH. Moreover, the releasable and recoverable P depended on both fractions of different P species in sludge and pH adjustment for sludge treatment.
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Affiliation(s)
- Zhang-Wei He
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), 202 Haihe Road, Harbin 150090, China
| | - Wen-Zong Liu
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China
| | - Ling Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), 202 Haihe Road, Harbin 150090, China
| | - Cong-Cong Tang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), 202 Haihe Road, Harbin 150090, China
| | - Ze-Chong Guo
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), 202 Haihe Road, Harbin 150090, China
| | - Chun-Xue Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), 202 Haihe Road, Harbin 150090, China
| | - Ai-Jie Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), 202 Haihe Road, Harbin 150090, China; Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China.
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Zhang HL, Fang W, Wang YP, Sheng GP, Xia CW, Zeng RJ, Yu HQ. Species of phosphorus in the extracellular polymeric substances of EBPR sludge. Bioresour Technol 2013; 142:714-8. [PMID: 23751808 DOI: 10.1016/j.biortech.2013.05.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 05/16/2013] [Accepted: 05/17/2013] [Indexed: 05/06/2023]
Abstract
In this study, the species of extracellular phosphorus and their transformation during extracellular polymeric substances (EPS) extraction were explored by using (31)P nuclear magnetic resonance spectroscopy. Results show that the extraction methods had a substantial influence on the phosphorus species in the extracted EPS. Cation exchange resin method was more appropriate for extracting EPS from the enhanced biological phosphorus removal (EBPR) sludge. Orthophosphate, pyrophosphate and polyphosphate were the main species of phosphorus found to be present in the EPS, which together accounted for about 6.6-10.5% of the total phosphorus in the EBPR sludge. The high percentage of extracellular phosphorus and their diverse species might reveal a new insight into the characteristics of the phosphorus in EPS in EBPR system.
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Affiliation(s)
- Hai-Ling Zhang
- School of Earth and Space Sciences, University of Science & Technology of China, Hefei 230026, China
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