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Sun Y, Lan J, Chen X, Ye H, Du D, Zhang TC. Bio-stabilization of arsenic in sediments by natural carbon-containing biomass: Performance and microbial metabolites. CHEMOSPHERE 2024; 362:142695. [PMID: 38925522 DOI: 10.1016/j.chemosphere.2024.142695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 06/13/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024]
Abstract
The development of sustainable methods for the control and bio-stabilization of arsenic in sediments, without generating secondary pollution, is an urgent technological need. In this study, we utilized three types of natural carbon-containing biomass (NCCB) to explore the stabilization of arsenic through the synergistic action of native sediment microbiomes. We also examined the metabolic pathways of microorganisms following the introduction of NCCB into high-arsenic sediments, aiming to elucidate the biological processes critical for arsenic bio-stabilization. Our findings indicate that humic acid (HA) and soil organic matter (SOM) are effective in preventing the leaching of As(III) from sediments, while fulvic acid (FA) and SOM can significantly reduce the leaching of As(V). Furthermore, the introduction of NCCB into the system altered the biological metabolic processes, with notable upregulation of metabolites such as 8-hydroxyondansetron, 1,2,3,5,6,8-hexathionane, and citric acid. These results hold promise for the application of these findings in the management of arsenic in natural sediments.
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Affiliation(s)
- Yan Sun
- College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, China; School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Jirong Lan
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Xiaohong Chen
- College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, China
| | - Hengpeng Ye
- College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, China.
| | - Dongyun Du
- College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, China
| | - Tian C Zhang
- Department of Civil and Environmental Engineering, College of Engineering, University of Nebraska-Lincoln, Omaha, USA
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Kou B, Yu T, Tang J, Zhu X, Yuan Y, Tan W. Kitchen compost-derived humic acid application promotes ryegrass growth and enhances the accumulation of Cd: An analysis of the soil microenvironment and rhizosphere functional microbes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 919:170879. [PMID: 38354798 DOI: 10.1016/j.scitotenv.2024.170879] [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: 11/04/2023] [Revised: 02/06/2024] [Accepted: 02/08/2024] [Indexed: 02/16/2024]
Abstract
Phytoremediation is an environmentally friendly and safe approach for remediating environments contaminated with heavy metals. Humic acid (HA) has high biological activity and can effectively complex with heavy metals. However, whether HA affects available Cd storage and the Cd accumulation ability of plants by altering the soil microenvironment and the distribution of special functional microorganisms remains unclear. Here, we investigated the effects of applying kitchen compost-derived HA on the growth and Cd enrichment capacity of ryegrass (Lolium perenne L.). Additionally, the key role of HA in regulating the structure of rhizosphere soil bacterial communities was identified. HA promoted the growth of perennial ryegrass and biomass accumulation and enhanced the Cd enrichment capacity of ryegrass. The positive effect of HA on the soil microenvironment and rhizosphere bacterial community was the main factor promoting the growth of ryegrass, and this was confirmed by the significant positive correlation between the ryegrass growth index and the content of SOM, AP, AK, and AN, as well as the abundance of rhizosphere growth-promoting bacteria such as Pseudomonas, Steroidobacter, Phenylobacterium, and Caulobacter. HA passivated Cd and inhibited the translocation capacity of ryegrass. The auxiliary effect of resistant bacteria on plants drove the absorption of Cd by ryegrass. In addition, HA enhanced the remediation of Cd-contaminated soil by ryegrass under different Cd levels, which indicated that kitchen compost-derived HA could be widely used for the phytoremediation of Cd-contaminated soil. Generally, our findings will aid the development of improved approaches for the use of kitchen compost-derived HA for the remediation of Cd-contaminated soil.
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Affiliation(s)
- Bing Kou
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Urban and Environmental Science, Northwest University, Xi'an 710127, China
| | - Tingqiao Yu
- International Education College, Beijing Vocational College of Agriculture, Beijing 102442, China
| | - Jun Tang
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaoli Zhu
- College of Urban and Environmental Science, Northwest University, Xi'an 710127, China
| | - Ying Yuan
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Wenbing Tan
- State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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Proshad R, Li J, Sun G, Zheng X, Yue H, Chen G, Zhang S, Li Z, Zhao Z. Field application of hydroxyapatite and humic acid for remediation of metal-contaminated alkaline soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:13155-13174. [PMID: 38243026 DOI: 10.1007/s11356-024-32015-8] [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: 09/24/2023] [Accepted: 01/10/2024] [Indexed: 01/21/2024]
Abstract
The quality of soil is essential for ensuring the safety and quality of agricultural products. However, soils contaminated with toxic metals pose a significant threat to agricultural production and human health. Therefore, remediation of contaminated soils is an urgent task, and humic acid (HA) with hydroxyapatite (HAP) materials was applied for this study in contaminated alkaline soils to remediate Cd, Pb, Cu, and Zn. Physiochemical properties, improved BCR sequential extraction, microbial community composition in soils with superoxide dismutase (SOD), peroxidase (POD), and chlorophyll content in plants were determined. Among the studied treatments, application of HAP-HA (2:1) (T7) had the most significant impact on reducing the active forms of toxic metals from soil such as Cd, Pb, Cu, and Zn decreased by 18.59%, 9.12%, 11.83%, and 3.33%, respectively, but HAP and HA had a minor impact on metal accumulation in Juncao. HAP (T2) had a beneficial impact on reducing the TCleaf/root of Cd, Cu, and Zn, whereas HAP-HA (T5) showed the best performance for reducing Cd and Cu in EFleaf/soil. HAP-HA (T5 and T7) showed higher biomass (57.3%) and chlorophyll (17.9%), whereas HAP (T4) showed better performance in POD (25.8%) than T0 in Juncao. The bacterial diversity in soil was increased after applying amendments of various treatments and enhancing metal remediation. The combined application of HAP and HA effectively reduced active toxic metals in alkaline soil. HAP-HA mixtures notably improved soil health, plant growth, and microbial diversity, advocating for their use in remediating contaminated soils.
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Affiliation(s)
- Ram Proshad
- Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jie Li
- CCTEG Chongqing Engineering (Group) Co., LTD., Chongqing, 400000, People's Republic of China
| | - Guohuai Sun
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Xu Zheng
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Haoyu Yue
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Geng Chen
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Shuangting Zhang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Ziyi Li
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Zhuanjun Zhao
- Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, People's Republic of China.
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Li H, Song J, Ma C, Shen C, Chen M, Chen D, Zhang H, Su M. Uranium recovery from weakly acidic wastewater using recyclable γ-Fe 2O 3@meso-SiO 2. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119347. [PMID: 37897898 DOI: 10.1016/j.jenvman.2023.119347] [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: 07/25/2023] [Revised: 09/28/2023] [Accepted: 10/14/2023] [Indexed: 10/30/2023]
Abstract
U(VI)-containing acidic wastewater produced from uranium mining sites is an environmental hazard. Highly efficient capture of U(VI) from such wastewater is of great significance. In this study, a mesoporous core-shell material (i.e. γ-Fe2O3@meso-SiO2) with magnetically and vertically oriented channels was rationally designed through a surfactant-templating method. Batch experiment results showed that the material had an efficiency level of >99.7% in removing U(VI) and a saturated adsorption capacity of approximately 41.40 mg/g, with its adsorption reaching equilibrium in 15 min. The U(VI) adsorption efficiency of the material remained above 90% in a solution with competing ions and in acidic radioactive wastewater, indicating its ability to selectively adsorb U(VI). The material exhibited high adsorption efficiency and desorption efficiency in five cycles of desorption and regeneration experiments. According to the results, the mechanism through which γ-Fe2O3@meso-SiO2 adsorbs U(VI) was dominated by chemical complexation and electrostatic attraction between these two substances. Therefore, γ-Fe2O3@meso-SiO2 is not only beneficial to control the environmental migration of uranium, but also has good selective adsorption and repeated regeneration performance when used to recover U(VI) from weakly acidic wastewater in uranium mining.
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Affiliation(s)
- Hong Li
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China
| | - Juexi Song
- College of Mechanical and Electrical Engineering, Qingdao University, Qingdao, 266071, Shandong, China
| | - Chuqin Ma
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China
| | - Congjie Shen
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China
| | - Miaoling Chen
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China
| | - Diyun Chen
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China
| | - Hongguo Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China
| | - Minhua Su
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China.
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Guo L, Tóth T, Yang F, Wang Z. Effects of different types of vegetation cover on soil microorganisms and humus characteristics of soda-saline land in the Songnen Plain. Front Microbiol 2023; 14:1163444. [PMID: 37808294 PMCID: PMC10551454 DOI: 10.3389/fmicb.2023.1163444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/15/2023] [Indexed: 10/10/2023] Open
Abstract
Introduction In the soda-saline grasslands of the Songnen Plain, Jilin Province, China, the prohibition of grazing has led to significant changes in plant communities and soil properties. However, the intricate interplay between soil physical and chemical attributes, the soil microbial community, and their combined influence on soil humus composition remains poorly understood. Methods Our study aimed to evaluate the impact of natural vegetation restoration on soil properties, microbial community diversity, and composition in the soda-saline soil region of the Songnen Plain. We conducted assessments of soil physical and chemical properties, analyzed community diversity, and composition at a soil depth range of 0-20 cm. The study covered soils with dominant soda-saline vegetation species, including Suaeda glauca Bunge, Puccinellia chinampoensis Ohwi, Chloris virgata Swarta, Phragmites australis (Clay.), Leymus chinensis (Trin.), and Tzvelev. We compared these vegetated soils to bare land devoid of any plants. Results We found that soil organic content (SOC) in vegetation restoration areas was higher than in bare land, with SOC content varying between 3.64 and 11.15 g/kg in different vegetated areas. Notably, soil pH emerged as a pivotal factor, explaining 11.4% and 12.2% of the variance in soil bacteria and fungi, respectively. There were correlations between SOC content and the relative abundance of specific microbial groups, with Acidobacteria and Mortierella showing a positive correlation, while Actinobacteria, Gemmatimonadetes, and Ascomycota exhibited significant negative correlations with SOC. Discussion The disparities in SOC composition and content among the soda-saline vegetation types were primarily attributed to variations in pH. Consequently, reducing soil pH is identified as a critical step in the process of vegetation restoration in soda-saline land. Prohibiting grazing has the potential to increase soda-saline SOC content and enhance microbial diversity, with Leymus chinensis and Phragmites australis showing particularly promising results in terms of higher SOC carbon content and microbial diversity.
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Affiliation(s)
- Liangliang Guo
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Tibor Tóth
- Centre for Agricultural Research, Institute for Soil Sciences, Budapest, Hungary
| | - Fan Yang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Zhichun Wang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
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Liu N, Ye W, Zhao G, Liu G. Release of free-state ions from fulvic acid-heavy metal complexes via VUV/H 2O 2 photolysis: Photodegradation of fulvic acids and recovery of Cd 2+ and Pb 2+ stripping voltammetry currents. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120420. [PMID: 36243185 DOI: 10.1016/j.envpol.2022.120420] [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: 09/05/2022] [Revised: 09/26/2022] [Accepted: 10/09/2022] [Indexed: 06/16/2023]
Abstract
Fulvic acid (FA), a ubiquitous organic matter in the environment, can enhance the mobility and bioavailability of Cd2+ and Pb2+ through competitive complexation to form FA-heavy metal ions (FA-HMIs) complexes with excellent solubility. Because FA-HMIs are electrochemically inactive, square wave anodic stripping voltammetry (SWASV) cannot accurately detect the content of bioavailable Cd2+ and Pb2+ in soils and sediments. This study ostensibly aimed to efficiently recover SWASV signals of Cd2+ and Pb2+ in FA-HMIs by disrupting FA-HMIs complexes using the combined vacuum ultraviolet and H2O2 (VUV/H2O2) process. Essentially, this study explored the photodegradation behavior and photolysis by-products of FA and their effects on the conversion of FA-HMIs complexes to free-state Cd2+ and Pb2+ using multiple characterization techniques, as well as revealed the complexation mechanism of FA with Cd2+ and Pb2+. Results showed that reactive groups such as carboxyl and hydroxyl endowed FA with the ability to complex Cd2+ and Pb2+. After FA-HMIs underwent VUV/H2O2 photolysis for 9 min at 125 mg/L of H2O2, FA was decomposed into small molecular organics while removing its functional groups, which released the free-state Cd2+ and Pb2+ and recovered their SWSAV signals. However, prolonged photolytic mineralization of FA to inorganic anions formed precipitates with Cd2+ and Pb2+, thereby decreasing their SWSAV signals. Moreover, the VUV/H2O2 photolysis significantly improved the SWASV detection accuracy toward the Cd2+ and Pb2+ in real soil and sediment samples, verifying its practicality.
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Affiliation(s)
- Ning Liu
- Key Lab of Smart Agriculture Systems, Ministry of Education, China Agricultural University, Beijing, 100083, PR China
| | - Wenshuai Ye
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs of China, China Agricultural University, Beijing, 100083, PR China
| | - Guo Zhao
- College of Artificial Intelligence, Nanjing Agricultural University, Nanjing, 210031, PR China
| | - Gang Liu
- Key Lab of Smart Agriculture Systems, Ministry of Education, China Agricultural University, Beijing, 100083, PR China; Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs of China, China Agricultural University, Beijing, 100083, PR China.
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