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Jin Z, Wang J, Wang D, Qiu S, Yang J, Guo W, Ma Y, Hu X, Chen J. A novel pretreatment method for analysis the oxygen isotopic compositions of inorganic phosphorus pools in freshwater sediment. WATER RESEARCH 2024; 262:122123. [PMID: 39067271 DOI: 10.1016/j.watres.2024.122123] [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: 05/13/2024] [Revised: 06/24/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Identifying the sources and cycling of phosphorus (P) is particularly important for formulating effective P management strategies in inland water. The oxygen isotopic compositions of phosphate (δ18OP) are recognized as a promising tool to solve this problem. However, the application of δ18OP in freshwater sediment is currently constrained by multiple difficulties. In this study, we presented a novel pretreatment method for δ18OP analysis of sediment inorganic P pools. Our results showed that the new method has advantages of simple operation, less time-consuming, and high P recovery rates. Specifically, we replaced the traditional Mg-induced co-precipitation (MAGIC) method by introducing Zr-Oxides gels with high selective adsorption function for phosphate. This made subsequent processing simpler and reduced the time consumption to ∼10 days, and the range of P recovery rates were from 88 % to 104 %. Furthermore, we emphasized the necessity of vacuum roasting following lyophilized Ag3PO4 to eliminate residual oxygen-containing impurities (e.g., NO3-, Ag2O, and organic matter). Additionally, evidences from microscopy and spectroscopy confirmed that this method ultimately yielded high-purity Ag3PO4 with the Ag:P molar ratios of 3.35:1. Importantly, combining direct synthesis Ag3PO4 between KH2PO4 and AgNO3 with the Ag3PO4 obtained by the method revealed no stark oxygen isotopic fractionation of phosphate during the pretreatment processes. The newly established δ18OP pretreatment methods here can also be extended to broader studies of the biogeochemical cycling of P in aquatic ecosystems, potentially advancing the understanding of the global P cycle.
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Affiliation(s)
- Zuxue Jin
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; Guizhou Province Field Scientific Observation and Research Station of Hongfeng Lake Reservoir Ecosystem, Guiyang, 551499, PR China
| | - Jingfu Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China; Guizhou Province Field Scientific Observation and Research Station of Hongfeng Lake Reservoir Ecosystem, Guiyang, 551499, PR China.
| | - Dengjun Wang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Shuoru Qiu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China
| | - Jiaojiao Yang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Wen Guo
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yiming Ma
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China
| | - Xinping Hu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jingan Chen
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China; Guizhou Province Field Scientific Observation and Research Station of Hongfeng Lake Reservoir Ecosystem, Guiyang, 551499, PR China.
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Yang Y, Zhang J, Chang X, Chen L, Liu Y, Xu Q, Wang M, Yu H, Huang R, Zhang J, Hu Y, Hu Q, Shi X, Zhang Y. Green manure incorporation enhanced soil labile phosphorus and fruit tree growth. FRONTIERS IN PLANT SCIENCE 2024; 15:1356224. [PMID: 38469331 PMCID: PMC10926847 DOI: 10.3389/fpls.2024.1356224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/05/2024] [Indexed: 03/13/2024]
Abstract
Introduction The incorporation of green manures substantially enhances the conversion of external phosphorus (P) fertilizers and soil-reserved P into forms readily available to plants. The study aims to evaluate the influence of green manure additions on soil phosphorus dynamics and citrus growth, considering different green manure species and initial soil phosphorus levels. Additionally, the research seeks to elucidate the microbiological mechanisms underlying the observed effects. Methods A citrus pot experiment was conducted under both P-surplus (1.50 g·P·kg-1) and P-deficient (0.17 g·P·kg-1) soils with incorporating legume (Leg), non-legume (Non-Leg) or no green manure residues (CK), and 18O-P labeled KH2PO4 (0.5 g, containing 80‰ δ18Op) was additionally introduced to trace the turnover characteristics of chemical P fertilizer mediated by soil microorganisms. Results and discussion In P-surplus soil, compared with the CK treatment, the Leg treatment significantly increased soil H2O-Pi (13.6%), NaHCO3-Po (8.9%), NaOH-Pi (9.5%) and NaOH-Po (30.0%) content. It also promoted rapid turnover of P sources into H2O-Pi and NaHCO3-Pi pools by enhancing the phoC (576.6%) gene abundance. In contrast, the Non-Leg treatment significantly augmented soil H2O-Pi (9.2%) and NaHCO3-Po (8.5%) content, facilitating the turnover of P sources into NaHCO3-Pi pools. Under P-deficient soil conditions, compared with the CK treatment, the Leg treatment notably raised soil H2O-Pi (150.0%), NaHCO3-Pi (66.3%), NaHCO3-Po (34.8%) and NaOH-Pi (59.0%) content, contributing to the transfer of P sources into NaHCO3-Pi and NaOH-Pi pools. This effect was achieved through elevated ALP (33.8%) and ACP (12.9%) activities and increased pqqC (48.1%), phoC (42.9%), phoD (21.7%), and bpp (27.4%) gene abundances. The Non-Leg treatment, on the other hand, led to significant increases in soil NaHCO3-Pi (299.0%) and NaHCO3-Po (132.6%) content, thereby facilitating the turnover of P sources into NaHCO3-Pi and NaOH-Pi pools, except for the phoC gene abundance. Both Leg and Non-Leg treatments significantly improved citrus growth (7.3-20.0%) and P uptake (15.4-42.1%) in P-deficient soil but yielded no substantial effects in P-surplus soil. In summary, introducing green manure crops, particularly legume green manure, emerges as a valuable approach to enhance soil P availability and foster fruit tree growth in orchard production.
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Affiliation(s)
- Yuanyu Yang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Jianwei Zhang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Xia Chang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Lunlun Chen
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Yongmin Liu
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Qingwei Xu
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Mengjuan Wang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Haiyan Yu
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Renmei Huang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Jie Zhang
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Yingxiao Hu
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Qijuan Hu
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Xiaojun Shi
- College of Resources and Environment, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, China
| | - Yuting Zhang
- College of Resources and Environment, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, Southwest University, Chongqing, China
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Xie Y, Wu Z, Xie X, Fu S, Liu S, Mou S, Pei X. Simplification of the pretreatment method for phosphate oxygen isotope measurement in phosphogypsum leachate. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119869. [PMID: 38142596 DOI: 10.1016/j.jenvman.2023.119869] [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: 10/09/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/26/2023]
Abstract
The stacking of phosphogypsum has caused considerable phosphorus pollution in water bodies near phosphogypsum yards through surface runoff and underground infiltration. The phosphate oxygen isotope (δ18Op) tracing method has served as a valuable tool for tracing phosphorus pollution in water. However, the existing δ18Op enrichment and purification methods are complex, costly, and inefficient for phosphate recovery, particularly for phosphogypsum leachate with complex compositions. Herein, a simplified and optimized pretreatment method for δ18Op measurement in phosphogypsum leachate was developed. Zirconium/polyvinyl alcohol (Zr/PVA) gel beads showed good selectivity for phosphate enrichment from water at different initial phosphate concentrations with appropriate Zr/PVA dosage. The optimal enrichment pH value was <7, and the concentrated phosphate on the Zr/PVA gel beads could be effectively eluted in an alkaline environment. Compared with the traditional Fe or Mg coprecipitation enrichment methods, impurities in the solution showed no obvious adverse effects on the phosphate enrichment process. Further, the phosphate solution eluted from the Zr/PVA gel beads was purified by a simple adjustment of the pH instead of cation exchange in the traditional purification process. Magnesium ions in the solution could be completely removed when the pH ranged from 3.17 to 6.15, and the phosphate recovery rate could reach 98.66% when the eluent pH was 5.02. Fourier-transform infrared spectroscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy revealed that similar to traditional pretreatment method, the proposed method can obtain high-purity Ag3PO4 solids for δ18OP measurement and no isotope fractionation of δ18OP was observed. Therefore, this study provides a promising and reliable pretreatment method for δ18OP measurement, especially in complex phosphogypsum leachate.
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Affiliation(s)
- Yanhua Xie
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China; College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China.
| | - Zifan Wu
- College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China
| | - Xuewen Xie
- College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China
| | - Shun Fu
- College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China
| | - Shujie Liu
- College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China
| | - Shimeng Mou
- College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China
| | - Xiangjun Pei
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China; College of Ecology and Environment, Chengdu University of Technology Chengdu, 610059, China.
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Jiang Y, Yan Q, Liu T, Xu Y, Han X, Ma X, Wang Y. Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China. FRONTIERS IN PLANT SCIENCE 2023; 14:1302763. [PMID: 38126021 PMCID: PMC10731378 DOI: 10.3389/fpls.2023.1302763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023]
Abstract
Introduction The Songnen Plain is one of the three major saline-alkali areas in China, covering a vast area, where drought and overgrazing have exacerbated the salinization trend, and will have great potential for development if utilized rationally. Phosphorus, as one of important soil nutrients, plays a crucial role in plant growth. How to minimize its loss and migration has become a current research hotspot. The objective of the present study was to elucidate the adsorption properties of phosphorus in soils affected by salinization and to establish the correlation between the potential for phosphorus release and soil properties. Methods A batch treatment test was conducted in this study using three soils with the various salinization degrees to examine the impact of environmental factors on the adsorption properties and potential release of phosphorus. Results and discussion It was found that the maximum phosphorus adsorption by the three salinization soils in 0-360 minutes accounted for 86.8%-90.5% of the total adsorption capacity; the equilibrium adsorption capacity was: HS> MS> LS. In cases where the phosphorus level in the surrounding liquid is low, the three levels of salinized soils exhibited varying levels of phosphorus discharge, with the adsorbent acting as the origin of contaminants. The Pseudo-second-order model kinetics and Langmuir equation can well describe the adsorption process, and the adsorption process is spontaneous heat absorption with entropy increase. Increasing the pH led to an increase in the adsorption of phosphorus from the three salinized soils. Additionally, the adsorption was enhanced by introducing varying concentrations of Na+, Ca2+, and Al3+ to the background solution. The phosphorus eutrophication release risk (ERI) demonstrated a gradual decline as temperature increased. Correlation analysis revealed a noteworthy positive correlation between TN, TP, and ERI, as well as a significant negative correlation between CEC, K+, and ERI. Furthermore, there was a highly significant negative correlation between coarse silt and fine silt. Considering local climatic and environmental factors is crucial for controlling the adsorption capacity of phosphorus in various salinized soils, as it can unveil the mechanism of phosphorus adsorption and impact its migration and release risk.
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Affiliation(s)
- Yan Jiang
- College of Resources and Environment, Jilin Agricultural University, Changchun, China
| | - Qiuliang Yan
- Institute of Animal Nutrition and Feed Sciences, Jilin Academy of Agricultural Sciences, Gongzhuling, China
| | - Tonglinxi Liu
- College of Resources and Environment, Jilin Agricultural University, Changchun, China
| | - Yifan Xu
- College of Resources and Environment, Jilin Agricultural University, Changchun, China
- Jilin Huan Zhi Technology Co., LTD., Changchun, China
| | - Xing Han
- College of Resources and Environment, Jilin Agricultural University, Changchun, China
| | - Xiulan Ma
- College of Resources and Environment, Jilin Agricultural University, Changchun, China
| | - Yujun Wang
- College of Resources and Environment, Jilin Agricultural University, Changchun, China
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Wang Z, Tian L, Zhao C, Du C, Zhang J, Sun F, Tekleab TZ, Wei R, Fu P, Gooddy DC, Guo Q. Source partitioning using phosphate oxygen isotopes and multiple models in a large catchment. WATER RESEARCH 2023; 244:120382. [PMID: 37660467 DOI: 10.1016/j.watres.2023.120382] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 06/27/2023] [Accepted: 07/17/2023] [Indexed: 09/05/2023]
Abstract
Excessive phosphorus (P) loadings cause major pollution concerns in large catchments. Quantifying the point and nonpoint P sources of large catchments is essential for catchment P management. Although phosphate oxygen isotopes (δ18O(PO4)) can reveal P sources and P cycling in catchments, quantifying multiple P sources in a whole catchment should be a research focus. Therefore, this study aimed to quantitatively identify the proportions of multiple potential end members in a typical large catchment (the Yangtze River Catchment) by combining the phosphate oxygen isotopes, land use type, mixed end-element model, and a Bayesian model. The δ18O(PO4) values of river water varied spatially from 4.9‰ to18.3‰ in the wet season and 6.0‰ to 20.9‰ in the dry season. Minor seasonal differences but obvious spatial changes in δ18O(PO4) values could illustrate how human activity changed the functioning of the system. The results of isotopic mass balance and the Bayesian model confirmed that controlling agricultural P from fertilizers was the key to achieving P emission reduction goals by reducing P inputs. Additionally, the effective rural domestic sewage treatment, development of composting technology, and resource utilization of phosphogypsum waste could also contribute to catchment P control. P sources in catchment ecosystems can be assessed by coupling an isotope approach and multiple-models.
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Affiliation(s)
- Ziteng Wang
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liyan Tian
- Institute of Process Engineering, Chinese Academy of Science, Beijing 100190, China
| | - Changqiu Zhao
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chenjun Du
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Zhang
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fuhong Sun
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Teklit Zerizghi Tekleab
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongfei Wei
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pingqing Fu
- School of Earth System Science, Tianjin University
| | - Daren C Gooddy
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, United Kingdom
| | - Qingjun Guo
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Qin S, Zhang H, He Y, Chen Z, Yao L, Han H. Improving radish phosphorus utilization efficiency and inhibiting Cd and Pb uptake by using heavy metal-immobilizing and phosphate-solubilizing bacteria. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 868:161685. [PMID: 36682543 DOI: 10.1016/j.scitotenv.2023.161685] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 06/17/2023]
Abstract
Phosphate-solubilizing bacteria play a key role in increasing plant growth as potential suppliers of soluble phosphorus and have great potential for the remediation of heavy metal-polluted soils. However, the soil and microbiological mechanisms by which phosphate-solubilizing bacteria prevent heavy metal absorption in radish have not been adequately studied. Here, the mechanisms of phosphorus solubilization, Cd and Pb immobilization, and the inhibition of heavy metal absorption by phosphate-solubilizing bacteria were studied in radish through solution adsorption and pot experiments. Two phosphate-solubilizing bacteria with high Cd and Pb removal rates (46.9-97.12 %), Klebsiella sp. M2 and Kluyvera sp. M8, were isolated. The soluble phosphorus content released by strains M2 and M8 was 265-277 mg L-1, achieved by secreting oxalic acid, ascorbic acid, citric acid, and succinic acid in an inorganic phosphorus medium containing 3 mg L-1 Cd and 5 mg L-1 Pb. Furthermore, these two functional strains induced the formation of Pb2(PO4)2, Cd(PO3)2, Fe2Pb3(PO4)2, CdS, and PbS precipitates that immobilized Cd and Pb in the solution. In general, strains M2 and M8 inhibited the absorption of Cd and Pb by radish by the following mechanisms: i) bacterial cell wall adsorption, ii) induction of Pb2(PO4)2, Cd(PO3)2, Fe2Pb3(PO4)2, CdS, and PbS precipitation in the solution/soil, iii) increases in the Ca2P and FeP contents in the radish rhizosphere, and iv) the promotion of bacterial community enrichment toward phosphorus-solubilizing and plant growth-promoting properties (Ramlibacter, Enterobacter, Bacillus, Gemmatimonas, and Lysinibacillusin) in the radish rhizosphere. These results provide bacterial resources and technical approaches to heavy metal pollution amelioration and efficient phosphorus fertilizer use in farmland.
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Affiliation(s)
- Shanmei Qin
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Heyun Zhang
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Yonghong He
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Zhaojin Chen
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China
| | - Lunguang Yao
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China.
| | - Hui Han
- Collaborative Innovation of Water Security for the Water Source Region of Mid-line of the South-to-North Diversion Project of Henan Province, College of Life Sciences and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, PR China.
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Jurado-Davila IV, Schneider IAH, Estumano D, Amaral Féris L. Phosphate removal using dolomite modified with ultrasound: mathematical and experimental analysis. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2023; 58:469-482. [PMID: 37005870 DOI: 10.1080/10934529.2023.2196928] [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: 06/10/2022] [Revised: 03/11/2023] [Accepted: 03/18/2023] [Indexed: 06/19/2023]
Abstract
We studied the dolomite modified using an ultrasound bath and its application in phosphate removal. The modification was applied to improve the physicochemical properties of the dolomite and then to enhance its suitability as an adsorbent solid. The settings for analyzing the adsorbent modification were bath temperature and sonication time. The modified dolomite was characterized by electron microscopy, N2 adsorption/desorption, pore size, and X-ray diffraction. To grasp the pollutant's adsorption mechanism more precisely, we used experimental research and mathematical model analysis. Design of Experiments was conducted to determine the ideal circumstances. In addition, the Bayesian method of Markov Chain Monte Carlo was used to estimate the isotherm and kinetic model parameters. A thermodynamic study was done to investigate the adsorption mechanism. Results show that the surface area of the modified dolomite was greater, enhancing its adsorption properties. To remove more than 90% of the phosphate, the optimal operational parameters for the adsorption were pH 9, 1.77 g of adsorbent mass, and 55 minutes of contact time. The pseudo-first-order, Redlich-Peterson and Sips models presented a good fit to the experimental data. Thermodynamics suggested a spontaneous and endothermic process. The mechanism suggested that physisorption and chemisorption could be involved in phosphate removal.
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Yang J, Xin X, Zhong X, Yang W, Zhang X, Ding S, Ren G, Zhu A. The fate of fertilizer-derived phosphorus under different long-term fertilization regimes: A phosphate oxygen isotope study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159263. [PMID: 36206904 DOI: 10.1016/j.scitotenv.2022.159263] [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: 06/24/2022] [Revised: 10/02/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Understanding the fate of exogenous fertilizer-derived inorganic phosphorus (Pi) is essential for effective P management. Hence, this study carried out a 180-day incubation experiment with or without KH2P18O4 in soils with four different fertilization regimes [without fertilizer (CK), mineral P and K fertilizer (PK), mineral N, P, and K fertilizer (NPK), compost (OM)]. We analyzed the atom % excess in phosphate oxygen isotope of sequentially extracted Pi pools (H2O-Pi, NaHCO3-Pi, NaOH-Pi, and HCl-Pi), soil respiration, potential phosphatase activities, and microbial biomass. Our results showed that exogenous phosphate fertilizer was immediately transformed into the H2O-Pi and NaHCO3-Pi pools and gradually partially immobilized in the HCl-Pi pool. Additionally, biotransformation plays an important role in the turnover of fertilizer-derived Pi. After the 180-day incubation, the biologically transformed H2O-Pi content was significantly (P<0.05) reduced by 63.2 % on average, with the largest reduction in PK. The NaHCO3-Pi gradually increased in both CK and OM through biotic processes. However, it continuously decreased in PK and NPK, likely due to the strong adsorption and microbial fixation. The NaOH-Pi fluctuated slightly in CK, NPK, and OM while gradually decreasing in PK. At the end of the incubation, 28.6 %, 37.0 %, 61.2 %, and 75.2 % of the Pi increment in CK, OM, NPK, and PK were stored in the HCl-Pi pool, respectively. Overall, these findings provide important information on the dynamics of fertilizer-derived Pi, delivering new insights into rational phosphate fertilizer management and sustainable agricultural development.
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Affiliation(s)
- Jiao Yang
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Xiuli Xin
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Xinyue Zhong
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China
| | - Wenliang Yang
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Xianfeng Zhang
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Shijie Ding
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Guocui Ren
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Anning Zhu
- Fengqiu Agro-ecological Experimental Station, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China.
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Wells NS, Gooddy DC, Reshid MY, Williams PJ, Smith AC, Eyre BD. δ 18O as a tracer of PO 43- losses from agricultural landscapes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115299. [PMID: 35623132 DOI: 10.1016/j.jenvman.2022.115299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Accurately tracing the sources and fate of excess PO43- in waterways is necessary for sustainable catchment management. The natural abundance isotopic composition of O in PO43- (δ18OP) is a promising tracer of point source pollution, but its ability to track diffuse agricultural pollution is unclear. We tested the hypothesis that δ18OP could distinguish between agricultural PO43- sources by measuring the integrated δ18OP composition and P speciation of contrasting inorganic fertilisers (compound vs rock) and soil textures (sand, loam, clay) in southwestern Australia. δ18OP composition differed between the three soil textures sampled across six livestock farms: sandy soils had lower overall δ18OP values (21 ± 1‰) than the loams (23 ± 1‰), which corresponded with a smaller, but more readily leachable, PO43- pool. Fertilisers had greater δ18OP variability (∼8‰), with fluctuations due to type and manufacturing year. Consequently, catchment 'agricultural soil leaching' δ18OP signatures could span from 18 to 25‰ depending on both fertiliser type and timing (lag between application and leaching). These findings emphasise the potential of δ18OP to untangle soil-fertiliser P dynamics under controlled conditions, but that its use to trace catchment-scale agricultural PO43- losses is limited by uncertainties in soil biological P cycling and its associated isotopic fractionation.
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Affiliation(s)
- Naomi S Wells
- Centre for Coastal Biogeochemistry, School of Environment, Science & Engineering, Southern Cross University, PO Box 157, East Lismore, 2480, NSW, Australia; Department of Soil & Physical Sciences, Faculty of Agricultural & Life Sciences, Lincoln University, Lincoln, 7647, New Zealand.
| | - Daren C Gooddy
- British Geological Survey, Wallingford, Oxfordshire, OX10 8BB, UK
| | - Mustefa Yasin Reshid
- Centre for Coastal Biogeochemistry, School of Environment, Science & Engineering, Southern Cross University, PO Box 157, East Lismore, 2480, NSW, Australia
| | - Peter J Williams
- British Geological Survey, Wallingford, Oxfordshire, OX10 8BB, UK
| | - Andrew C Smith
- British Geological Survey, Keyworth, Nottinghamshire, NG12 5GG, UK
| | - Bradley D Eyre
- Centre for Coastal Biogeochemistry, School of Environment, Science & Engineering, Southern Cross University, PO Box 157, East Lismore, 2480, NSW, Australia
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Luo L, Guo M, Wang E, Yin C, Wang Y, He H, Zhao C. Effects of mycorrhiza and hyphae on the response of soil microbial community to warming in eastern Tibetan Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155498. [PMID: 35523342 DOI: 10.1016/j.scitotenv.2022.155498] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 06/14/2023]
Abstract
The effects of mycorrhiza and its external hyphae on the response of soil microbes to global warming remain unclear. This study investigates the role of mycorrhiza and its hyphae in regulating soil microbial community under warming by examining the microbial biomass and composition in the ingrowth cores of arbuscular mycorrhiza (AM) plant, Fargesia nitida, and ectomycorrhiza (ECM) plant, Picea asperata, with/without mycorrhiza/hyphae and experimental warming. The results showed that warming significantly increased the biomass of all soil microbes (by 19.89%-137.48%) and altered the microbial composition in both plant plots without mycorrhiza/hyphae. However, this effect was weakened in the presence of mycorrhiza or hyphae. In F. nitida plots, warming did not significantly affect biomass and composition of most soil microbial groups when mycorrhiza or hyphae were present. In P. asperata plots, warming significantly increased the total and ECM fungi (ECMF) biomass in the presence of hyphae (p < 0.05) and the total, Gn, and AM fungi (AMF) biomass in the presence of mycorrhiza (p < 0.05). Meanwhile, the response of enzyme activities to warming was also altered with mycorrhiza or hyphae. Additionally, soil microbial community composition was mainly influenced by soil available phosphorus (avaP), while enzyme activities depended on soil avaP, dissolved organic carbon (DOC), and nitrate concentrations. Our results indicate that mycorrhiza and its hyphae are essential in regulating the response of microbes to warming.
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Affiliation(s)
- Lin Luo
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China; CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, PR China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, PR China
| | - Min Guo
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Entao Wang
- Escuela Nacional de Ciencias Biologicas, Instituto Politecnico Nacional, Mexico 11340, Mexico
| | - Chunying Yin
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, PR China
| | - Yanjie Wang
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Heliang He
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, PR China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, PR China; College of Agriculture, Forestry and Food Engineering, Yibin University, Yibin 644007, China
| | - Chunzhang Zhao
- State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, PR China.
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11
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Wang Z, Guo Q, Tian L. Tracing phosphorus cycle in global watershed using phosphate oxygen isotopes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154611. [PMID: 35307435 DOI: 10.1016/j.scitotenv.2022.154611] [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: 12/24/2021] [Revised: 02/24/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
The Phosphorus (P) cycle is a crucial biochemical process in the earth system. However, an extensive increase of P input into watersheds destroyed the ecosystem. To explore the effects of internal P loading and external P input in global watersheds, we reviewed the research progress and synthesized the isotope data of experimental results from literatures. An integrated result of the observational and experimental studies revealed that both internal P and external P largely contribute to watershed P loadings in watersheds. Internal P can be released to the overlying water during sediment resuspension process and change of redox conditions near the sediment-water interface. Growing fertilizer application on farmlands to meet food demand with population rise and diet improvement contributed to an huge increase of external P input to watersheds. Therefore, water quality cannot be improved by only reducing internal P or external P loadings. In addition, we found that phosphate oxygen isotope technology is an effectively way to trace the P biogeochemical cycle in watersheds. To better predict the dynamic of P in watersheds, future research integrating oxygen isotope fractionation mechanisms and phosphate oxygen isotope technology would be more effective.
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Affiliation(s)
- Ziteng Wang
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingjun Guo
- Key Laboratory for Resource Use and Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Liyan Tian
- Institute of Process Engineering, Chinese Academy of Sciences, China
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12
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Yan J, Li Q, Hu L, Wang J, Zhou Q, Zhong J. Response of microbial communities and their metabolic functions to calcareous succession process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 825:154020. [PMID: 35202682 DOI: 10.1016/j.scitotenv.2022.154020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 02/02/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Soil chronosequence is of great important in studying rates and directions of soil evolution, which can provide valuable information for the validation of soil genesis theory. However, the variation of microbial composition and structure in a calcareous soil chronosequence in karst region of southwest China is not clear. To reveal the response of microbial communities and their metabolic functions to calcareous succession process, a chronosequence of four calcareous soils (black calcareous soil, brown calcareous soil, yellow calcareous soil and red calcareous soil) with a depth of 0-20 cm from tropical monsoon rainforests of Guangxi Nonggang National Nature Reserve, southwest China was collected to analyze the soil physichemical and microbial properties. The results showed that the overall soil nutrient contents decreased along calcareous soil chronosequences and all calcareous soils were nitrogen (N) limitation. And, there were significant differences in the structure of microbial communities in calcareous soil chronosequences. To accommodate N-restriction, fungal community shifted from pathotroph to symbiotroph trophic pattern and Ectomycorrhizal fungi (ECM) emerged. ECM competing with free-living decomposers for N will slow soil carbon (C) cycling and increase soil C storage. Penicillium and Gaiella, the keystone genera, were related to phosphorus (P) cycle closely. Taken together, the occurrence of these microorganisms emphasizes the importance for C, N and P cycle in calcareous chronosequence soils and thus contributes to the ongoing worldwide endeavor to characterize their function for investigating the rate and direction of calcareous pedogenic changes.
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Affiliation(s)
- Jiahui Yan
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin 541004, China; Key Laboratory of Karst Dynamics, MNR & GZAR, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China; International Research Center on Karst under the Auspices of UNESCO, Guilin 541004, China
| | - Qiang Li
- Key Laboratory of Karst Dynamics, MNR & GZAR, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China; International Research Center on Karst under the Auspices of UNESCO, Guilin 541004, China.
| | - Linan Hu
- Key Laboratory of Karst Dynamics, MNR & GZAR, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China; International Research Center on Karst under the Auspices of UNESCO, Guilin 541004, China
| | - Jiaqi Wang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin 541004, China
| | - Qihai Zhou
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Key Laboratory of Rare and Endangered Animal Ecology, Guangxi Normal University, Guilin 541004, China.
| | - Juxin Zhong
- Key Laboratory of Karst Dynamics, MNR & GZAR, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China; International Research Center on Karst under the Auspices of UNESCO, Guilin 541004, China
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13
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Luo L, Ye H, Zhang D, Gu JD, Deng O. The dynamics of phosphorus fractions and the factors driving phosphorus cycle in Zoige Plateau peatland soil. CHEMOSPHERE 2021; 278:130501. [PMID: 34126697 DOI: 10.1016/j.chemosphere.2021.130501] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/31/2021] [Accepted: 04/03/2021] [Indexed: 05/26/2023]
Abstract
Phosphorus (P) is an essential nutrient, limiting plant growth and microbial activity in many ecosystems. However, a few studies have been conducted to investigate P dynamics and the factors driving P dynamics in peatland soils. Therefore, this study chose Zoige Plateau peatland (the largest peatland in China) to reveal P dynamics and the possible driving factors through fractionating soil P and investigating a series of abiotic and biotic factors. It is found that season, peatland type, and soil depth could strongly affect P dynamics. H2O-P and NaHCO3-P (labile P) had lower content, while NaOH-P, HCl-P, Mix-P, and Residual-P (non-labile P) were the dominant fractions. Besides, the sum of P fractions was higher than the traditional measurement of total P, suggesting P storage might be underestimated in peatland soils. Moreover, it is observed that biotic factors affected P fractions more than abiotic factors, and fungi affected refractory P more than bacteria. This study provides essential information for understanding P cycling in peatland soils and emphasizes specific microbes related to P cycling, which should be paid more attention to in the future.
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Affiliation(s)
- Ling Luo
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, PR China; College of Resources, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Haoyang Ye
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, PR China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
| | - Danhua Zhang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, PR China
| | - Ji-Dong Gu
- Environmental Engineering, Guangdong Technion Israel Institute of Technology, Shantou, 515063, PR China
| | - Ouping Deng
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, PR China; College of Resources, Sichuan Agricultural University, Chengdu, 611130, PR China.
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