11 hasil untuk "Mahboub Saffari"
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Distribution of zinc and copper chemical forms and their relationship with some physico-chemical properties and clay minerals in some calcareous soils
Determination and recognition of relative distribution of chemical forms of each element and their relationship with physical, chemical and soil clay minerals can help researchers to manage soil fertility better. This research attempted to recognize chemical fractions of zinc (Zn) and copper (Cu)…
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Assessing the Efficiency of Chemically Modified Biochars in Removing Nickel From Aqueous Solutions
Background: Modification methods can significantly alter the adsorption properties of biochar by changing its structure. This study aimed to optimize the removal of Ni2 + from aqueous solutions using unmodified pristine biochar (PB) and acid-modified biochar (ACB) and alkali-modified biochar (ALB)…
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Effect of Synthetic and Organic Chelators Application on Copper Phytoextraction by Calendula Officinalis L.
Background: Using ornamental plants for phytoremediation of Heavy Metals (HMs) in soil environments has been grown due to its cost-effectiveness and ease of use in urban environments. The aim of this study was to assess the potential use of Calendula officinalis for soil Copper (Cu)…
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Effects of titanium dioxide nanoparticles and sheep manure biochar on the behavior of methylene blue organic contaminant in sandy loam and loam soils
The present study aimed to evaluate the effects of titanium dioxide nanoparticles (T: 1 and 3%), sheep manure biochar (B: 1 and 3%), and their combination (T0.5% + B0.5% and T1.5% + B1.5%) on the degradation/sorption of methylene blue (MB: 100, 200, and 300 mg/kg soil) in sandy loam (SL) and loam…
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The fate and mobility of chromium, arsenic and zinc in municipal sewage sludge during the co-pyrolysis process with organic and inorganic chlorides
Abstract Co-pyrolysis is an efficient approach for municipal sewage sludge (SS) treatment, facilitating the production of biochar and promoting the stabilization and removal of heavy metals, particularly when combined with chlorinated materials. This study explores the impact of pyrolysis…
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Modeling and optimization of nickel (II) ion removal from aqueous solutions using sodium carboxymethyl cellulose hydrogel crosslinked with ferric chloride
Background: Recent years have witnessed a growing interest in utilizing biocompatible and renewable polymers as efficient adsorbents for removing heavy metals from aqueous solutionsz. This study investigates the efficacy of carboxymethyl cellulose (CMC) hydrogel crosslinked with ferric chloride as…
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Evaluation of carboxymethyl cellulose-based seed coatings enriched with micro mineral fertilizers for enhancing wheat seed resilience to abiotic stresses
Abstract This study evaluated carboxymethyl cellulose (CMC)-based films as seed coatings for improving the germination and early growth of wheat (Triticum aestivum L., cv. Mihan) under abiotic stress conditions. Experiments were carried out in three successive stages to evaluate the effects of…
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Reduction of chromium toxicity by applying various soil amendments in artificially contaminated soil
Six soil amendments including municipal solid waste compost (MSWC), coal fly ash (CFA), rice husk biochar prepared at 300°C (B300) and 600°C (B600), zerovalent iron (Fe0), and zerovalent manganese (Mn0) were evaluated to determine their ability to reduce mobility of chromium (Cr) in a Cr-spiked…
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Optimized paraquat removal using Bi₄O₅Br₂: synthesis, performance evaluation, and mechanistic insights
Abstract Paraquat (PQ), a widely used bipyridinium herbicide, poses severe environmental and public health risks due to its high toxicity and persistence in aquatic systems. In this study, a Bi₄O₅Br₂ composite was synthesized via a double-solvent-derived route using CAU-17 as a precursor, and…
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A field study of the environmental effects of marginalization in the 19th District of Tehran using Rapid Impact Assessment Matrix (RIAM)
Marginalization is one of the consequences of economic and social crises in Iran during recent years, which has caused many problems on the margin of large cities such as Tehran. Lack of living standards, as well as urban management supervision, have caused environmental problems to be one of the…
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Optimization and mechanistic evaluation of chlorpyrifos removal from aqueous solutions using Co3O4-g-C3N4 nanocomposite via response surface methodology
Abstract The persistence and toxicity of pesticides such as chlorpyrifos (CPF) pose a serious threat to aquatic ecosystems due to their widespread agricultural use and resistance to natural degradation. This study reports the synthesis of a novel Co3O4-g-C3N4 nanocomposite via a simple hydrothermal…