In order to determine the degree of polycyclic aromatic hydrocarbon pollution, a biomonitoring study was conducted using honey as a bioindicator. Bees are good bioindicators of environmental pollution, either via the presence of toxic molecules in their bodies or via the presence of residues in their products. In this study we investigated 10 honey samples collected from polluted and unpolluted areas

Cr (VI) being used in various activities of industries and its improper treatment lead to contamination of environment. Among different methods, biological is the most efficient method to control pollution from soils affected with metals. Present study was designed to assess the role of Paenibacillus thiaminolyticus PS5 for adsorption, Cr (VI) reduction and mechanism of reduction. Sorption of chromium

We hypothesised that at higher densities herbivorous rotifers through their allelochemicals affect the survival and reproduction of cladocerans. To test this, we separately cultured three rotifers (Brachionus calyciflorus, Brachionus havanaensis, and Plationus patulus) and three cladocerans (Ceriodaphnia dubia, Daphnia pulex, and Moina macrocopa). Chlorella vulgaris was used as food and reconstituted

To determine whether grafting increases cadmium (Cd) accumulation in the post-grafting generation of hyperaccumulator plants, the effects of grafting on Cd accumulation characteristics of post-grafting generations of a potential Cd-hyperaccumulator Solanum photeinocarpum were evaluated in pot and field experiments. The following four grafting combinations were examined: ungrafted (UG), self-rooted

Phenanthrene is a toxic and mutagenic pollutant that can cause severe environmental and human health issues. The bioremediation of these polyaromatic hydrocarbons (PAHs) is possible with a biosurfactant by enhancing hydrophobicity. In this study, the production of a biosurfactant by Bacillus pumilus 1529 and its effects on the phenanthrene biodegradation pathway were examined. Biosurfactant production

Pharmaceutical compounds are considered emerging environmental pollutants that have a potential harmful impact on environment and human health. In this study, the spiky green horse-chestnut shell was used for the biosorption and removal of acetaminophen from aqueous solution. It was analysed how the parameters, like contact time, pH, mass of biosorbent and temperature, influence the effectiveness of

In this study, the real herbicide wastewater was degraded by electrocatalysis oxidation followed by subsequent biological treatment. The influence of several process variables of electrocatalysis oxidation, such as current density, pH and electrode gap on chemical oxygen demand (COD) removal ratio, was investigated and the optimum conditions were determined. The results indicated that COD removal ratio

This study deals with the elimination of hexavalent chromium from simulated solution using Acacia auriculiformis shells and its different modified forms as potent biosorbents. The raw plant biomass (RAA) was modified with sulphuric acid and named as sulphuric acid-activated carbon (SAA) and was further complexed with a chelating reagent ethylenediaminetetraacetic acid (SAAC) to further modify its sorption

Deicing salt runoff is a cause of freshwater salinisation in many regions. Studies in uplands indicate that soil properties affect storage and movement across the landscape of salt and dissolved organic carbon (DOC). Wetlands have unique soil properties, act as buffers between uplands and aquatic ecosystems, and are major sources of DOC to surface waters, yet less is known about these dynamics in wetlands

Field investigation and laboratory experiments were conducted to study the Pb and Cd tolerance mechanism of Bellamya aeruginosa from the Xiangjiang River. B. aeruginosa were collected from the middle reaches of the Xiangjiang River, and their Pb and Cd accumulation and subcellular distribution, as well as the related ecological risks, were analysed. Results showed significant differences between Pb

Zooplankton are an important link between trophic levels in aquatic ecosystems, and their response to organic carbon is likely to have broad implications for lake food webs. The main objective of the research was to determine variations in zooplankton communities against the background of the structural heterogeneity of the lake and to link the observed patterns to the organic carbon content of the

Zinc pyrithione (ZnPT) and copper pyrithione (CuPT) are widely used antifouling booster biocides in the shipping industry as a replacement for the banned tributyltin (TBT). Sub-lethal effects of zinc pyrithione (ZnPT; 10 μg L−1), copper pyrithione (CuPT; 10 μg L−1) and combined copper–zinc pyrithione (CZPT; 5 + 5 and 10 + 10 μg. L−1) to freshwater indicator mussel Unio crassus (5.49 ± 0.85 cm in size)

Natural polymer Moringa oleifera seed as coagulant and bentonite clay as adsorbent were used for preparing novel composite coagulant. Results obtained from FTIR, SEM, TEM and P-XRD show that the bentonite clay and M. oleifera seed biopolymers physico-chemically interact with each other during the preparation of clay-polymer composite. The FTIR results show that the major functional groups present in

This study investigated the potential influence of three organic ameliorators (peat, biochar and leonardite) on salts and nutrients in salt-affected soils during intermittent leaching. Results showed that nearly 90% of salt was removed from columns in the leaching process and sodium adsorption ratio (SAR) of the soil after leaching was reduced by 67.3% (control, CK), 62.9% (peat), 70.1% (biochar) and

The present study was performed to investigate surface sediment samples from Lake Edku of the Nile Delta Lagoons, Egypt. The Lake is important for fishing in the region. The importance of research is to understand the mobility and bioavailability of each studied metal. The study was carried out on 10 sampling sites during 2017. The sediments were subjected to the technique of sequential extraction

The study was aimed at the migration and transformation of lead compounds in the rhizosphere, its accumulation in plants under the influence of the rhizosphere bacteria. For experiment, soil samples of the technogenous ecosystem contaminated differently by lead have been selected for plant growing. The samples were subdivided into control soil and the soil, inoculated by Azotobacter and Bacillus rhizobacteria

The present research aimed to determine the lowest levels of three heavy metals (Pb, Cd and Cu) to which the larvae of Southern House Mosquito, Culex quinquefasciatus are susceptible in water. The study also aimed to investigate the effects of these heavy metals on the development of Cx. quinquefasciatus at concentrations set by Pakistan Environmental Protection Agency (Pak-EPA) as permissible levels

ABSTRACT Human activity has led to widespread chemical alteration of natural environments. Aquatic ecosystems are especially susceptible to chemical changes, including those caused by runoff and invasive species. Here, we examined the effects of water chemistry, specifically sodium chloride as well as three metals (Ca, K, and Mn) known to differ between native and invasive wetland plant species’ leaf

Seagrass (Cymodocea nodosa) ability to remove cadmium and nickel ions from single metal solutions was investigated in the present study. Metal ions were measured in the solution using an atomic absorption spectrophotometer. Various operational parameters (initial pH, biomass dose, metal ion concentration, and contact time) were tested and found to affect the uptake capacity of Cd (II) and Ni (II).

The purpose of this study is to investigate the current status of contamination due to the heavy metal and organic substances (PAHs, HC >12, organotin compounds, PCB, DDD, DDE, DDT) pollution of the sediments from the coastal area of the Bagnoli brownfield (Naples, Italy) and draw some hypotheses on the origin and trends of industrial and also geogenic contamination. Surface sediments and cores were

Treatment with nitrification inhibitors, such as dicyandiamide (DCD) and 3,4-dimethylpyrazole phosphate (DMPP) have been strongly indicated to increase grassland biomass and mitigate soil N2O emission rates. However, the responses of both alpine meadow aboveground biomass and N2O emission rates to nitrification inhibitors remains unclear. We separately applied three doses of DCD and DMPP to alpine

Lead (Pb) is one of the most toxic heavy metals that affect the physiological status of aquatic organisms. The present investigation evaluated the possible toxic effect of lead chloride (PbCl2) on biomarkers responses, DNA damage and histological alterations in Venus verrucosa gills and digestive gland. Three concentrations of PbCl2 (D1:1µgL−1, D2: 10µgL−1 and D3: 100µgL−1) were chosen for V. verrucosa

The effects of the flooding and initial Eh of sediments on the sorption of uranium onto the sediments were analysed by flooding and static experiments. The changes in uranium species with Eh and kinetic and thermodynamic characteristics of the uranium sorption onto the sediments were investigated. The flooding experiment indicates that the initial Eh of the sediment gradually decreased with the increase

In order to evaluate the ecological risk reductions of copper (Cu) and cadmium (Cd) and the change of nutrient contents and stoichiometry in a smelter-impacted farmland in Guixi, Jiangxi Province, China, with ∼ 800 mg Cu kg−1 soil and 0.8 mg Cd kg−1 soil, an three years in situ experiment was conducted. The field trial consisted of 4 × 5 m plots in a completely randomised block design. Hydroxyapatite

Aurelia is a jellyfish genus common in coastal and estuarine habitats, that are typically affected by human pressures such as heavy metals contamination. Mercury is one of the most dangerous due to its high toxicity, persistence and bioaccumulation. In this paper, we tested for the first time the independent and combined effects of a level of mercury allowable by European regulation in force and hyposalinity