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001-es BibID:	BIBFORM123102
Első szerző:	Ojani, Mohammad Reza PHD student
Cím:	The role of land use on phosphorus release and longitudinal changes of pollution in an agricultural watershed, Bostankar river, Iran / Mohammad Reza Ojani, Mehdi Ghajar Sepanlou, MohammadAli Bahmanyar, Majid Danesh, Boglárka Bertalan-Balázs, Szilárd Szabó
Dátum:	2024
ISSN:	2363-5037 2363-5045
Megjegyzések:	Phosphorus in surface waters accelerate algal growth and eutrophication, considerably influencing water quality. Spatiotemporal changes in phosphorus concentration are crucial for environmental issues. We aimed to study the temporal and spatial changes in water quality in a river and in a drainage water system considering different land uses. To this aim, 15 water samples were collected from the origin of the river to the estuary, in the Bostankar River watershed (N-Iran), during spring and winter. Further samples were collected from agricultural drainage water in rice fields, tea, flower, orange as well as kiwi gardens, and forests during spring and winter. EC, pH, TDS, and three forms of phosphorus (total, particulate, and soluble) were measured in the water samples. The results showed that water quality changes in agricultural drainage water were time-dependent; the average total phosphorus was 0.4 mg l-1 lower in the spring than in the winter. The highest phosphorus concentration (1.29 mg l-1) occurred in the winter in the drainage water of the orange gardens. Temporal and spatial changes of the river showed that water quality reduced from the river upstream (jungles and grasslands) towards the downstream (different agricultural land uses), and the amount of phosphorus increased from 0.25 to 0.5 mg l??1. The TDS increased from 60 to 220 mg l??1 in the river in the winter. Finally, the results showed that human activities were the main factor in river water quality reduction due to agricultural activities.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Dissolved solids Eutrophication Soluble phosphorus Water quality
Megjelenés:	Sustainable Water Resources Management. - 10 : 4 (2024), p. 1-12. -
További szerzők:	Sepanlou, Mehdi Ghajar Bahmanyar, Mohammad Ali Danesh, Majid Balázs Boglárka (1985-) (geográfus) Szabó Szilárd (1974-) (geográfus)
Pályázati támogatás:	TKP2021-NKTA-32 Egyéb RRF 2.3.1 21 2022 00008 Egyéb
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001-es BibID:	BIBFORM124140
035-os BibID:	(WoS)001300134800010
Első szerző:	Rahimi, Meisam
Cím:	Impact assessment of Zeolite, Ca-bentonite and Biochar amendments on Cd bioavailability and fractions in polluted calcareous soils / Meisam Rahimi, Boglárka Bertalan-Balázs, Ali Adelinia, Eisa Ebrahimi, Mohammadreza Ojani
Dátum:	2024
ISSN:	1866-6280
Megjegyzések:	The refining of polluted soils by heavy elements is one of the most important environmental policies in industrialized and developing countries. Using adsorbents is a suitable procedure for the immobilization of heavy metals in polluted soils. This study aimed to assess the immobilization of Cadmium (Cd) in polluted calcareous soil affected by the application of organic and inorganic amendments including Biochar (from grape pruning residues) and natural Zeolite and their interaction under wheat cultivation. The treatments used in this study were two amendments of Zeolite and Biochar (from grape pruning wastes) at three levels (0, 1, and 4%) and three levels of Cd contamination (0, 75, and 150 mg/kg soil). A 16-week incubation period was considered for the homogenization of the amendments in soil and wheat was grown according to the standards procedure. At the end of incubation, different fractions of Cd including residual, exchangeable, bonded to organic matter, bonded to carbonate and bonded to iron and manganese. Also available Cd by DTPA and EDTA methods and 1000-grain weight of wheat were measured. The results showed that the highest amount of Cd bound to organic matter was obtained in 4% Biochar treatment to 15 mg/kg. The highest and lowest amounts of Cd extracted with DTPA were obtained in the control one (92 mg/kg) and the level of 4% Biochar (67 mg/kg), respectively. The results showed that increasing the amount of Biochar and Zeolite amendments increased the weight of 1000 grains of wheat in all treatments. According to the results of the study, the use of Biochar and Zeolite reduced the amount of Cd extracted by DTPA ( 82.436 mg/kg) and EDTA (115.605 mg/kg). Finally, the results showed that the use of Biochar and Zeolite has reduced active Cd and its mobility in the soil due to increasing organic and carbonate fractions. Combining biochar and zeolite in soil remediation efforts can enhance their effectiveness in reducing the concentration and mobility of active Cd. The biochar provides a stable carbon matrix for long-term immobilization of Cd, while the zeolite offers additional adsorption capacity and ion-exchange capabilities. This synergistic effect can lead to improved soil quality and reduced environmental risks associated with Cd contamination.
Tárgyszavak:	Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Wheat Toxicity ETDA Heavy metals Immobilization
Megjelenés:	Environmental Earth Sciences. - 83 : 17 (2024), p. 1-14. -
További szerzők:	Balázs Boglárka (1985-) (geográfus) Adelinia, Ali Ebrahimi, Eisa Ojani, Mohammad Reza (1990-) PHD student
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