51
|
Zornoza R, Gómez-Garrido M, Martínez-Martínez S, Gómez-López MD, Faz Á. Bioaugmentaton in Technosols created in abandoned pyritic tailings can contribute to enhance soil C sequestration and plant colonization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 593-594:357-367. [PMID: 28346909 DOI: 10.1016/j.scitotenv.2017.03.154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 06/06/2023]
Abstract
Creation of Technosols in combination with phytostabilization may be a sustainable strategy to minimize the environmental and human health hazards derived from mine tailings. Bioaugmentation can facilitate plant establishment and growth for efficient phytostabilization. In order to assess if bioaugmentation can increase soil quality and fertility, decrease metal(loid) mobility and accelerate plant colonization, a one-year field experiment was designed with creation of Technosols in two tailings ponds with different pH (acidic (AT) and neutral (NT)), with addition of marble waste (MaW) and two organic materials (pig manure (PM) and sewage sludge (SS), without or with inoculation of effective microorganisms (EM) at three rates. Results showed that MaW was the main factor responsible for maintaining pH ~7 in AT and ~8 in NT, decreasing salinity, and decreasing the soluble fraction of metals (70-99%). The soluble fraction of As decreased ~45% in AT, related to increases in pH up to neutrality, while increased ~90% in NT with PM due to pH>8 and higher content of organic compounds. The addition of PM and SS significantly increased soil organic C (SOC), nutrient contents and microbial biomass and activity in both tailings, being PM more effective. However, a positive priming effect was observed in NT with SS addition likely due to higher C/N ratio and lack of nutrients. There was a significant effect of EM rate on inorganic C, SOC, N, K and microbial biomass and activity, with higher values as rate increased. Vegetation richness and density directly increased with increasing EM rate. Multivariate analyses showed that the most important properties contributing to increase richness and plant density were microbial biomass and N. Thus, bioaugmentation contributed to soil C sequestration (as organic and inorganic C) and soil fertility, related to high soil microbial biomass and activity, which facilitated an effective colonization of vegetation.
Collapse
Affiliation(s)
- Raúl Zornoza
- Sustainable Use, Management, and Reclamation of Soil and Water Research Group, Technical School of Agricultural Engineering, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain.
| | - Melisa Gómez-Garrido
- Sustainable Use, Management, and Reclamation of Soil and Water Research Group, Technical School of Agricultural Engineering, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain
| | - Silvia Martínez-Martínez
- Sustainable Use, Management, and Reclamation of Soil and Water Research Group, Technical School of Agricultural Engineering, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain
| | - María Dolores Gómez-López
- Sustainable Use, Management, and Reclamation of Soil and Water Research Group, Technical School of Agricultural Engineering, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain
| | - Ángel Faz
- Sustainable Use, Management, and Reclamation of Soil and Water Research Group, Technical School of Agricultural Engineering, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain
| |
Collapse
|
52
|
Niazi NK, Bibi I, Fatimah A, Shahid M, Javed MT, Wang H, Ok YS, Bashir S, Murtaza B, Saqib ZA, Shakoor MB. Phosphate-assisted phytoremediation of arsenic by Brassica napus and Brassica juncea: Morphological and physiological response. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:670-678. [PMID: 28084797 DOI: 10.1080/15226514.2016.1278427] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this study, we examined the potential role of phosphate (P; 0, 50, 100 mg kg-1) on growth, gas exchange attributes, and photosynthetic pigments of Brassica napus and Brassica juncea under arsenic (As) stress (0, 25, 50, 75 mg kg-1) in a pot experiment. Results revealed that phosphate supplementation (P100) to As-stressed plants significantly increased shoot As concentration, dry biomass yield, and As uptake, in addition to the improved morphological and gas exchange attributes and photosynthetic pigments over P0. However, phosphate-assisted increase in As uptake was substantially (up to two times) greater for B. napus, notably due to higher shoot As concentration and dry biomass yield, compared to B. juncea at the P100 level. While phosphate addition in soil (P100) led to enhanced shoot As concentration in B. juncea, it reduced shoot dry biomass, primarily after 50 and 75 mg kg-1 As treatments. The translocation factor and bioconcentration factor values of B. napus were higher than B. juncea for all As levels in the presence of phosphate. This study demonstrates that phosphate supplementation has a potential to improve As phytoextraction efficiency, predominantly for B. napus, by minimizing As-induced damage to plant growth, as well as by improving the physiological and photosynthetic attributes.
Collapse
Affiliation(s)
- Nabeel Khan Niazi
- a Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad , Faisalabad , Pakistan
- b MARUM and Department of Geosciences , University of Bremen , Bremen , Germany
- c Southern Cross GeoScience , Southern Cross University , Lismore , NSW , Australia
| | - Irshad Bibi
- a Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad , Faisalabad , Pakistan
- b MARUM and Department of Geosciences , University of Bremen , Bremen , Germany
| | - Ayesha Fatimah
- a Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad , Faisalabad , Pakistan
| | - Muhammad Shahid
- d Department of Environmental Sciences , COMSATS Institute of Information and Technology , Vehari , Pakistan
| | | | - Hailong Wang
- f Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province , Zhejiang A & F University , Lin'an , Hangzhou , China
- g School of Environment and Chemical Engineering , Foshan University , Foshan , China
| | - Yong Sik Ok
- h Korea Biochar Research Center & School of Natural Resources and Environmental Science , Kangwon National University , Chuncheon , Korea
| | - Safdar Bashir
- a Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad , Faisalabad , Pakistan
| | - Behzad Murtaza
- d Department of Environmental Sciences , COMSATS Institute of Information and Technology , Vehari , Pakistan
| | - Zulfiqar Ahmad Saqib
- a Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad , Faisalabad , Pakistan
| | | |
Collapse
|
53
|
Pardo T, Bernal MP, Clemente R. Phytostabilisation of severely contaminated mine tailings using halophytes and field addition of organic and inorganic amendments. CHEMOSPHERE 2017; 178:556-564. [PMID: 28351014 DOI: 10.1016/j.chemosphere.2017.03.079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 03/14/2017] [Accepted: 03/20/2017] [Indexed: 06/06/2023]
Abstract
Phytostabilisation strategies have proven to be an efficient remediation option for mine tailings, but the adequate plant species and amendments have to be carefully selected. A remediation experiment was carried out at the semi-field level in tailings (pH 3.2, ≈1100, 4700 and 5000 mg kg-1 of As, Pb and Zn, respectively) from the mining district of La Unión-Cartagena (SE Spain). A red mud derivative (Fe/Al oxides), its combination with compost, and hydrated lime (Ca hydroxide) were applied in field plots of 0.25 m2. After four months of field stabilisation, tailings were transferred unaltered to a plant growth facility, and Atriplex halimus and Zygophyllum fabago (halophytes) were sown. Three months later, trace element (TE) solubility, plant accumulation and chemical speciation in the tailings pore water were studied. In unamended tailings, soluble TEs concentrations were very high (e.g., 40 mg Zn l-1), the dominant species being free ions and SO42-- complexes (>70%). The addition of amendments increased tailings pH (6.7-7), reduced TEs solubility and extractability (>80-99%) and changed the dominant species of soluble Al, Cu, Pb and Zn to hydroxides and/or organo-metallic complexes, but increased slightly the extractable As and soluble Tl concentrations. Plants were able to grow only in amended tailings, and both species presented low levels of Al, As, Cd and Zn. Therefore, the use of combined red mud derivative and compost and halophytes was shown to be a good phytostabilisation strategy, although the dose applied must be carefully chosen in order to avoid possible solubilisation of As and Tl.
Collapse
Affiliation(s)
- T Pardo
- Department of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, PO Box 164, 30100, Murcia, Spain
| | - M P Bernal
- Department of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, PO Box 164, 30100, Murcia, Spain
| | - R Clemente
- Department of Soil and Water Conservation and Organic Waste Management, CEBAS-CSIC, PO Box 164, 30100, Murcia, Spain.
| |
Collapse
|
54
|
Chen H, Mei J, Luo Y, Qiu A, Wang H. Adsorptive properties of alluvial soil for arsenic(V) and its potential for protection of the shallow groundwater among Changsha, Zhuzhou, and Xiangtan cities, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:4018-4028. [PMID: 27924432 DOI: 10.1007/s11356-016-8150-7] [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: 10/08/2016] [Accepted: 11/23/2016] [Indexed: 06/06/2023]
Abstract
The study area is among Changsha, Zhuzhou, and Xiangtan cities, which was under agricultural use and natural conditions about 10 years ago and now is becoming part of the metropolis because of the urban expansion. This study aims to investigate the mechanisms and capabilities of the local alluvial soil layer for protecting the local shallow groundwater from arsenic pollution by field surveys and batch experiments. The field surveys showed that there was an acidic tendency of the groundwater, and phosphate, nitrate, and arsenic in the groundwater significantly increased comparing to their reference values. It indicates that the disturbance of the former agricultural land due to the change of land use may be responsible for these changes. From the experimental results, the maximum adsorption capacity of the soil for As(V) was as low as 0.334 mg/g, and lower As(V) adsorption capacities were obtained at higher As(V) concentration, higher pH, and lower temperature. The presence of H2PO4- and SiO32- posed negative, while HCO3- slight positive, and SO42-, NO3- and Cl- negligible influences on the As(V) adsorption. The surface-derived organic matter played a negative role in the adsorption process, and low specific surface area influenced adsorption capacity of the soil. The study reveals that the local soil layer shows poor potential for protection of the local shallow groundwater from As(V) pollution, and the change trends of the groundwater environments due to more intensive anthropogenic activities will further weaken this potential and increase the risk of the groundwater contamination.
Collapse
Affiliation(s)
- Hongwei Chen
- Hunan Provincial Key Laboratory of Water and Sediment Science and Water Hazard Prevention, Changsha University of Science & Technology, Changsha, 410114, China.
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, China.
| | - Jinhua Mei
- General Geological Environmental Monitoring Station of Hunan Province, Changsha, 410007, China
| | - Yueping Luo
- Hunan Environmental Monitoring Center, Changsha, 430072, China
| | - Anni Qiu
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Huan Wang
- School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| |
Collapse
|