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The adsorption of acid red 88 (AR88) anionic dye onto ZnO/ZnMn₂O₄ nanocomposite (ZnMn-NC) prepared by the hydrothermal method was carried out. The adsorbent was characterized by means of XRD, SEM, HRTEM, Raman spectroscopy, FTIR, BET, and zeta potential measurements. We investigated the influence of dye initial concentration, temperature, and pH on AR88 adsorption onto ZnMn-NC. Equilibrium data were...
Mixed pharmaceutical wastewater contains high levels of chemical oxygen demand (COD) and high concentrations of toxic and harmful substances. A conventional wastewater treatment process cannot treat this wastewater sufficiently to meet discharge standards. Therefore, mixed pharmaceutical wastewater treatment is a serious challenge to wastewater management. In this study, a full-scale combined anaerobic/...
The aim of our study was to monitor and analyze the main biological hazards connected to the long-term storage of wood chips for energy production. The analysis was carried out in four high-capacity storage yards of the town heating plants in the Banská Bystrica self-governing region in Slovakia. Five samples were taken from each pile of a rectangular shape and volume over 4,000 m³ ; the sampling...
The removal, separation, and enrichment of heavy metals in aqueous solutions has become a prime concern over the last few decades because of both their adverse effects on the ecosystem and living organisms and their valuable resource character. This paper describes a study to optimize the simultaneous removal/ recovery of Cu(II) from aqueous solutions by bulk liquid membranes, through a facilitated...
We studied the accumulation of lead as Pb(NO₃)₂ in the freshwater rotifer Lecane quadridentata using Leadmium Green and x-ray microanalysis by energy dispersion. The results indicate that lead is bioaccumulated in great amounts in the stomach after the rotifer is exposed for 24 h to 0.5 mg L-1 of Pb(NO₃)₂ . When the exposure concentration of Pb(NO₃)₂ is increased to 1.0 mg L⁻¹, lead was detected mostly...
Spatial analysis is currently a popular research tool, particularly in studies that focus on soil properties, and it is important for a comprehensive presentation of results by means of spatial statistics techniques. Spatial autocorrelation determines a degree of relationship between variables for two specific spatial units (locations). This relationship is reflected by spatial dependence of investigated...
Salinization of soil has a negative impact on the activity of microorganisms and thus leads to disturbances in the cycling of nutrients in the soil environment. Our goal was to determine what amount of salt has some measurable negative effect on enzymatic activity of soils, namely on native proteases. Inhibition of proteases was detected at as little as 0.5 mg of chloride salts in an organomineral...
The aim of the study was to determine the level of contamination by fumonisins of selected corn food products that are available on the market in Silesia. The material covered by the study were samples of corn flour, corn grits, corn flakes, products for infants and young children, popcorn and samples of corn grain. In these samples the total amount of fumonisins as well as separately fumonisin B₁...
This study focuses on the bioconversion of agricultural wastes (AWs) in rural Egypt. We analyzed data derived from literature to implement a future image suiting Egypt's situation. Despite the limited information in the field of management of agricultural wastes in Egypt and the gap between formal and practical data, the studies consistently showed that bioconversion is suitable to sustainably treat...
Pharmaceutical wastewater treatment is a complicated process due to the presence of various kinds of toxic chemicals and antibiotics that are harmful to any living organisms. In this study we employed a pilot-scale net-like rotating biological contactor (NRBC) with three compartments and total volume of 78.75 L to eliminate high concentrations of sulfamethoxazole (SMX) from a synthetic wastewater...
The complexes of Cu and Mn metals with carboxylates (pivalic acid and benzoic acid) and imidazole were prepared and characterized. The synthesized complexes were screened for antimicrobial activity and cytotoxicity. The FTIR technique was used for characterization. The antibacterial assay revealed that the ligand and complexes are active against Escherichia coli, Staphylococcus aureus and Pasteurella...
This article presents analyses made in the first stage of research on determining landscape capacity of Sobotka municipality located in Lower Silesia in Poland, partially within Sleza Landscape Park and Bystrzyca Valley Landscape Park. The main objective of the study was to determine the level of change that took place in the high-value landscape of the analysed area in 1938-2016, and to identify...
PM₂.₅ is the top issue of air pollution in Henan Province in China, especially in autumn and winter. In order to investigate its spatial and temporal distribution characteristics, monitoring data were collected in 17 cities and analyzed by using statistical methods and GIS tools. The results show that 57.16% of the entire days in 2015 met Chinese the national standard on the daily average concentration...
Biomonitoring a stressed Kuwait Bay environment revealed a differential and collective transfer of mercury (Hg) between the primary producer and primary and secondary consumers, in addition to possible Hg bioconcentrations and bioaccumulation in such marine organisms that attributed harmful effects to humans at the tertiary level of the food chain. Selected live samples were collected from five bay...
To understand the phytoremediation capability of Cd by Salix babylonica L. we studied Cd accumulation and translocation, antioxidant enzyme activities, lipid peroxidation, and soluble protein contents in S. babylonica exposed to 10, 50, and 100 μM Cd for 7, 14, 21, and 28 d. The results indicated that seedling growth was accelerated by 10 μM Cd, and significantly inhibited by 50 and 100 μM Cd. The...
Water and soil conservation practices in the Wei River Basin (WRB) may influence the Lower Wei River (LWR) itself and the Lower Yellow River (LYR), of which the Wei is a tributary. Based on data of measured and natural runoff and suspended sediment load (SSL) in the WRB, the connections between runoff and SSL from the WRB and deposition in the LWR, the elevation of Tonggguan Hydrology Station, and...
Energy crisis and environmental pollution have become major challenges in China’s economic development, which has triggered the demand for alternative energy sources and promoted the popularization of ground source heat pump technology. A ground source heat pump (GSHP) is a central heating and/or cooling system that transfers heat to or from the ground. It uses the earth as a heat source (in the winter)...
Northeastern China is one of the largest industrial and agricultural bases in China, but frequent flooding brings huge losses to the people and country. To forecast floods in northeastern China, we used commensurability forecasting techniques and ordered a network structure chart and butterfly structure diagram. The prediction selected extraordinary flooding years that have occurred in the region...
Based on 2005-15 water quality data and measured flood data in 2006-12 at Tongguan Bridge Section, storm-period water-quality characteristics and different time-scale water-quality characteristics have been analyzed for the Weihe River and its basins. The interannual and quarterly mean concentrations of COD, NH₃-N, DO, and river pH value are calculated to evaluate pollution characteristics. Water...
It is generally thought that the seasonal succession of phytoplankton is minimized during winter months. However, some studies have indicated that there is also diversity in phytoplankton communities in winter. The main purpose of this study was to determine the phytoplankton community structure and species composition of a lake during winter, when covered with ice. Phytoplankton samples from the...
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