Water, Air, & Soil Pollution

Wed, 01/27/2021 - 02:01
The bioaccumulation factors (BAFs) of heavy metal (Fe, Zn, Pb, Cd, Cr, Cu, Mn, and As) concentrations in benthic and pelagic fish organs (muscles, gills, liver, and hearts), and concentrations of heavy metals in water and sediments of Ogbese River, Ondo State, Nigeria were investigated. From the results, the concentrations of heavy metals in the water were within the permissible limits stipulated...
Thu, 01/21/2021 - 02:01
The article highlights sorptive properties of poultry litter. Preliminary studies on sorption of Cd2+, Cu2+, Ni2+, Pb2+, Zn2+ ions at the concentration range of 1–1000 mg L-1 were carried out. Langmuir and Freundlich models were used to determine the potential capacities of the poultry litter. Sorption parameter outcome from isotherms exhibited the following order: Pb > Cd > Cu > Zn...
Thu, 01/14/2021 - 02:01
Microfibers are now ubiquitous in the environment largely due to the widespread use of natural and synthetic textiles. Many enter aquatic systems through wastewater treatment plant (WWTP) effluent, surface water runoff, and atmospheric deposition, where they persist and may be ingested by filter-feeding organisms. In addition to causing physical damage (e.g., digestive and respiratory...
Wed, 01/13/2021 - 02:01
The 16 United States Environmental Protection Agency (US EPA) priority polycyclic aromatic hydrocarbons (PAHs) are considered carcinogenic and mutagenic for humans and are emitted by anthropogenic sources mainly in urban areas. For this purpose, the carcinogenic risk in the Metropolitan Region of Porto Alegre/RS (RMPA), Brazil, was investigated due to its demographic density (421.8 inhabitants/...
Wed, 01/13/2021 - 02:01
In nature, the bioaccumulative potent neurotoxin methylmercury (MeHg) is produced from inorganic mercury (Hg) predominantly by anaerobic microorganisms. Hg-contaminated soils are a potential source of MeHg due to microbial activity. We examine streambank soils collected from the contaminated East Fork Poplar Creek (EFPC) in Tennessee, USA, where seasonal variations in MeHg levels have been...
Fri, 01/08/2021 - 02:01
Titanium dioxide (TiO2) nanoparticles (NPs) are the most widely released nanomaterials in the environment and are considered an emerging contaminant. Although the phytotoxicity mechanism of TiO2 NPs on plants involves the elevated generation of reactive oxygen species (ROS), it is still not well established in soybean. Herein, we evaluated the effects of 250–1000 mg L−1 TiO2 NPs on seed...
Fri, 01/08/2021 - 02:01
Exogenous regulation of plant physiology is a kind of effective approach to help plant grow under Cd (cadmium)-contaminated environment. CA (cinnamaldehyde) is an environmental friendly natural compound with medicinal properties and antimicrobial activities. In this work, we found that CA was able to confer plant Cd tolerance by priming defense in the root of B. rapa. Pretreatment with CA...
Fri, 01/08/2021 - 02:01
Heavy metals release from contaminated sediments is one of the most important chemical processes affecting overlying water quality in river, lake, and ocean. The objective of this study was to determine the leaching properties, kinetic rate, and leaching amount of zinc (Zn) and cadmium (Cd) from the river sediment contaminated by gold mining. Speciation of Zn and Cd in the sediments was extracted...
Fri, 01/08/2021 - 02:01
The ability of plants to resist heavy metals is associated with the development of different ecotypes and intracellular strategies capable of dealing with the prevention, tolerance, and detoxification of heavy metal stress. This study aimed to present the physiological effects of exposure to copper and chromium in Eichhornia crassipes, Salvinia biloba, and Pistia stratiotes by measuring the...
Fri, 01/08/2021 - 02:01
This study investigated the passivation of multiple heavy metals (Cd, Cr, Cu, Zn, and Pb) in river sediments by composting with rice straw. The correlation between the selected environmental factors and the distribution of heavy metal fractions was assessed by multivariate analysis. The results suggested that the composting could reduce the bioavailability of Cu, Cd, Cr, and Pb. The influences of...
Fri, 01/08/2021 - 02:01
The research was aimed at checking the possibility of using the Chrysanthemum (Chrysanthemum indicum) as a sorbent for the removal of heavy metals. The chrysanthemum was divided into flower petals, stems, and leaves to check the affinity for the metals tested. In the work, equilibrium and kinetic modeling of the process was carried out by selecting nonlinear models with the best fit. The tested...
Tue, 01/05/2021 - 02:01
Phlogopite was activated by ball milling at a mild milling speed of 300 rpm to be directly used as heavy metal ions (Cu2+, Zn2+, Cd2+, and Ni2+) adsorbent. Without the need of final breakdown of its crystal structure, which is usually observed at intensive milling over 600 rpm, phase transformation of trigonal phlogopite into monoclinic by milling at 300 rpm occurred, accompanied with enhanced...
Tue, 01/05/2021 - 02:01
A comprehensive and detailed monitoring scheme was applied to examine more than 1000 organic micro-pollutants (OMPs) in drainage water samples collected from a rural village with informal end-of-life vehicle processing activities in northern Vietnam. Concentrations of total OMPs ranged from 8900 to 34,100 (median 11,400) ng L−1. In our water samples, major classes of organic pollutants were n-...
Mon, 01/04/2021 - 02:01
Harran Plain is the largest plain within the area administered under the Southeastern Anatolia Project (known as the GAP project in Turkey), covering an area of 1500 km2. This article presents results of groundwater quality assessment based on some pollution indicators such as electrical conductivity (EC) and nitrate (NO3−) values in Harran Plain between 2005 and 2015. In order to show the change...
Wed, 12/16/2020 - 02:01
Amendment with treated biosolids can increase soil fertility and plant nutrition to the soil, but the fertilization value compared with other commercial soil amendments on the soil ecosystem is poorly understood. The effects of different proportions (0%, 5%, 10%, and 15%) of thermal and pH-treated biosolid applications on the growth performance, nutrient contents, and toxicity performance of...
Sun, 12/13/2020 - 02:00
On a daily basis, aquatic ecosystem is exposed to heavy metals, drugs, and chemicals; the continuous exposure results in a toxic effect, depending on the dose and duration of exposure. Studies have confirmed tardigrade to be highly tolerant to very high temperature, pressure, gravity, etc. This study aimed at confirming various toxic damages caused by exposure to cadmium solution and the...
Fri, 12/04/2020 - 02:01
We propose to identify the influence of organic acids as well as total proteins in the accumulation and translocation of heavy metals from the rhizosphere to the plant organs of cultivated yellow melon var. Natal throughout the vegetative cycle. Physical and chemical attributes and the concentration of Cu, Zn, and Pb were determined in soil samples. Samples of plant tissue and rhizosphere at 0,...
Thu, 12/03/2020 - 02:01
Vegetation along roadsides reduces soil erosion, increases filtering of water runoff, and acts as a biodiversity corridor. The purpose of this study was to assess soil properties and evaluate their effect on vegetation establishment in roadsides. Furthermore, the effects of shoulder type (paved and unpaved) and time since seeding (0–1 year, 2–4 years, and ≥ 5 years) on soil properties were also...
Sat, 11/28/2020 - 02:01
The rapid growth of human population and global industrialization has resulted in the generation of larger amounts of wastewater containing various pollutants, among which toxic heavy metals. Adsorption is efficient for this purpose, but its application is limited by the high cost of adsorbent materials. Chitosan (CS) and phosphorylated microcellulose (PMC) have a high potential as low-cost and...
Wed, 11/25/2020 - 02:01
The aim of the study was to evaluate the differences in heavy metal accumulation in yew (Taxus baccata L.) needles depending on gender and age. Trees growing in the same soil and forest conditions were selected for the study. The study was conducted in the botanical garden in the center of Krakow, and study plots were characterized by the same deposition of pollutants. Needles of yew and soil...
Tue, 11/17/2020 - 02:01
Shiga toxin-producing Escherichia coli (STEC) is one of the most commonly heard sources of foodborne outbreaks but presently lacks studies of in the Kathmandu Valley. This study explored the presence of STEC in river water (n = 17), groundwater (n = 83), feces (n = 50), and manure (n = 20) in the Kathmandu Valley, Nepal. Samples that were confirmed to be E. coli–positive using the Colilert assay...
Tue, 11/17/2020 - 02:01
In this study, a practical and excellent method was used to determine the famoxadone and cymoxanil via high-performance liquid chromatography equipped utilizing ultraviolet detector lamp (HPLC-UV) for investigating the dissipation behavior and residue distribution of famoxadone and cymoxanil in cucumber and soil ecosystem. The limit of quantification (LOQS) of famoxadone and cymoxanil in cucumber...
Thu, 11/12/2020 - 02:01
The uptake of organic pollutants by agricultural plants and their accumulation in edible parts cause serious health problems to animals and humans. In this study, we used carbon-rich materials, such as biochar (BC), hydrochar (HC), and green compost (GC), to reduce the absorption and accumulation of three pesticides, imidacloprid (IMI), boscalid (BOS), and metribuzin (MET) and two endocrine...
Thu, 11/12/2020 - 02:01
Immobilization using biochar is a cost-effective and environmentally friendly remediation method to inhibit the transfer of soil contaminants to the food chain. This study evaluated the effects of coconut shell–derived biochar (CSB) and sewage sludge–derived biochar (SSB) on reducing the accumulation of cesium (Cs) by plant from contaminated soil. Pot experiment was conducted by cultivating...
Thu, 11/12/2020 - 02:01
The effects of pyrolysis temperature (350, 450, and 550 °C) on the properties of biochar prepared from chicken manure (CM), dairy manure (DM), and their digestates (CMD and DMD) were investigated in this study. The physicochemical properties and the transformation of phosphorous and heavy metal forms in various types of biochar were analyzed, and the bioavailability was assessed to optimize the...
Thu, 11/12/2020 - 02:01
Artisanal and Small-scale Gold Mining (ASGM) is one of the main sources of global Hg emissions and is present over a wide territorial in the southern Amazonia. In this region, there is a rapid approximation between agricultural and livestock activities and the impact of this close proximity having little or no evaluation. Thus, we have determined the Hg concentration in soybean plants in an area...
Tue, 11/03/2020 - 02:01
In this study, light intensities of Aliivibrio fischeri obtained from soil suspension and its filtrate were compared using field soils contaminated with heavy metals. The soils collected from rice paddy and forest had different soil textures with either high or low silt/clay content. The correlation between soil toxicity and soil solution toxicity for A. fischeri showed a high linearity in sandy...
Sun, 10/25/2020 - 02:01
Assisted phytoremediation using amendments is a cost-effective and environmentally friendly approach to control soil pollution. However, amendment type, combination and application rate can influence process effectiveness. In the present study, the effect of the association of red mud and carbon-based amendments on the physicochemical properties of a former mine soil as well as the growth and...
Tue, 10/20/2020 - 02:01
The capability of faecal indicator bacteria (FIB) to be environmental in origin and the deficient specificity of markers can mean uncertain outcomes when just a single marker is distinguished. This can give a bogus thought regarding water quality. A water quality analysis and the correlation between FIB, multiple physiochemical parameters and a viral marker in recreational waters were studied....
Wed, 10/14/2020 - 02:01
During storm events, contaminants and sediments from roadways, curbside, parking lots, and lawns in urban environments are mobilized and transported by the stormwater runoff. These contaminants are finally discharged in waterbodies, such as rivers and lakes, with adverse effects on public health and ecosystems. Several studies have reported high levels of heavy metals and nutrients in urban...
Sat, 10/10/2020 - 02:01
Manganese (Mn) is an essential heavy metal for living organisms. However, they tend to accumulate the excess of this element causing health problems. The increase of the environmental contamination by this heavy metal is mainly due to mining practices. This work aimed to isolate yeast from mining waters to evaluate its ability of removing Mn2+ ions for the development of further biotechnological...
Sat, 10/10/2020 - 02:01
Sulfate (SO42−) is an essential nutrient for the growth of several agricultural crops. However, higher than normal SO42− runoff into rivers and streams can cause environmental impacts including acidification, heavy metal release, phosphorus remobilization, and methylmercury release in aquatic systems. The city of Winkler, Manitoba, Canada, uses groundwater for its municipal needs. Some of the...
Sat, 10/10/2020 - 02:01
In present work, mustard straw, an abundantly available agricultural residue in various parts of globe, is used to prepare a low-cost activated carbon by chemical activation using phosphoric acid. Response surface methodology is employed for optimization of adsorption of methylene blue dye onto mustard straw-activated carbon (MSAC). Central composite design is employed to evaluate the effect of...
Sat, 10/03/2020 - 02:01
Organic sorbents alter physicochemical soil properties and mitigate heavy metal (HM) bioavailability. However, some sorbents are labile and, therefore, introduce the risk of HM release into soil after mineralisation. Before field application, new stable organic sorbents such as woodchip biochar (BIO) and brown coal waste (BCW) need to be tested and compared with standard organic amendments like...
Wed, 09/30/2020 - 02:01
Rapid land use and land cover changes have a significant effect on ecology, environment, and human health in urban watersheds. With increase in frequency and intensity of the urban flooding events and repeated inundation of the neighborhoods, it is important to monitor the water and soil chemical characteristics in Greens Bayou Watershed (GBW) region. The objectives of this study were to (1)...
Tue, 09/29/2020 - 02:01
In this work was studied the single-component and multi-component abatement of metals in water using a hydrogel based on chitosan. The maximum single-component abatement capacities of cadmium (Cd) and lead (Pb) were 234.84 and 482.83 mg of metal per g of dried hydrogel at pH 6 and 40 °C, according to the Sips isotherm. The value for iron (Fe) was 386.59 mg g−1 at pH 4 and 40 °C, according to the...
Tue, 09/29/2020 - 02:01
Restrictive requirements for maximum concentrations of metals introduced into the environment lead to search for effective methods of their removal. Chemical precipitation using hydroxides or sulfides is one of the most commonly used methods for removing metals from water and wastewater. The process is simple and inexpensive. However, during metal hydroxide precipitation, large amounts of solids...
Tue, 09/29/2020 - 02:01
From 12 mining areas surrounding a manganese mining area in Guangxi, soil samples were collected at different distances from the center of the mining area and different sampling points at the same distance. 16S rRNA gene sequencing was used in extracting and amplifying DNA in the soil samples, and double-terminal gene sequence library comparison was performed. Through OUT clustering, species...
Tue, 09/29/2020 - 02:01
Particulate matter (PM) is a complex mixture of particles that changes over time and from place to place; however, most PM is caused by the fuel combustion of motor vehicles and industry. PM is associated with acute and chronic illnesses, such as pulmonary and cardiovascular diseases. Medellín is one of the most polluted cities in Latin America. Therefore, the physicochemical characterization of...
Sat, 09/26/2020 - 02:01
Nano zerovalent iron (nZVI) is one of the most widely used nanotechnologies in soil remediation, but its long-term performance can be limited due to its high reactivity and rapid ageing. The aim of this study was to compare the immobilisation of Cd, Cu, Ni, and Pb in artificially contaminated soil samples using nZVI and to evaluate their retention over a 1-year period. Single-metal-contaminated...
Sat, 09/26/2020 - 02:01
River Erguna is the Sino-Russian boundary river which has been widely concerned both by Russia and China due to the water quality and water resources management. As one class of persistent organic pollutants, no enough attention is paid to investigate the behavior characteristics and risk of organochlorine pesticides (OCPs) in the rivers originated from forests and grasslands distributing in the...
Fri, 09/25/2020 - 02:01
We aimed to develop a sustainable adsorbent for bisphenol A (BPA), an endocrine disruptor that seriously threatens human health. First, microcrystalline cellulose (MCC) was reacted with 2-bromoisobutyrylbromide to obtain a surface initiator (SI) for the grafting of polystyrene (PS), poly(lauryl methacrylate) (PLMA), and poly(N,N-dimethylaminoethyl methacrylate) (PDM) through ARGET-ATRP. These...
Thu, 09/24/2020 - 02:01
Hydroxyapatite-silica fibers were prepared by sol-gel process and electrospinning, and their capacity for adsorption of cadmium and lead ions in aqueous solution was studied. The samples were characterized by SEM, FTIR, TGA, DSC, BET, and XRD. The composite consists on a network of continuous rough fibers with mean diameter of 150 ± 40 nm after thermal treatment. The fibers present a mesoporous...
Wed, 09/09/2020 - 02:01
The causes of the changes in different heavy metals in the hypereutrophic Qilu Lake were investigated by reconstructing the change history of heavy metal contamination in the past century, combined with land-use change and meteorological data. The results indicated that Qilu Lake was one of the lakes with the most serious risk of heavy metal pollution in China. The potential ecological risk index...
Tue, 09/08/2020 - 02:01
The Qinghai-Tibetan Plateau (QTP), as the third pole, has recently experienced unexpected heavy metal pollution. However, few were available on heavy metal pollution and source apportionment in regions near South Asia, where the economy is currently experiencing rapid development. This paper evaluated heavy metal pollution in wetland soils along the Yarlung Tsangbo River (YTR), the largest river...
Thu, 09/03/2020 - 02:01
Lead is a metal capable of affecting physiology and metabolism in fish, including Nile tilapia (Oreochromis niloticus). However, few studies have evaluated the effects of lead on digestive enzyme activities in fry. At that stage, independent feeding begins, and there is increased demand and consumption of food, so chronic exposure to metal during this stage of development would cause null or...
Wed, 09/02/2020 - 02:01
The negative impacts of road salt (primarily NaCl) on freshwater ecosystems and ground and surface waters used for drinking purposes have been extensively documented. Besides direct increases in chloride (Cl−) and sodium (Na+) concentrations in receiving waters, these ions are responsible for a myriad of soil chemical changes and processes resulting in increased corrosivity of water and...
Tue, 09/01/2020 - 02:01
In order to find the best nanometal oxides to alleviate the cadmium-caused toxicity, we chose five kinds of nanometal oxides (MgO NPs, ZnO NPs, α-Fe2O3 NPs, γ-Fe2O3 NPs, and Fe3O4 NPs) tried to research the different effects. In this study, the effects of nanometal oxides on physiological response indicators in wheat seedlings poisoned by cadmium were figured out. The results showed that the...
Sun, 08/30/2020 - 02:01
The presented work is devoted to the study of the ecological potential of Spirulina Arthrospira platensis to absorb copper ions from the water polluted by given heavy metal. The obtained data reveal the ability of Spirulina in a short time, in particular for 3 days to diminish 70% of Cu2+ ions of the initial incubation medium (100 ppm). The physiological parameters of Spirulina under the...
Thu, 08/27/2020 - 02:01
Although environment protection efforts worldwide, the chemistry and biological contamination of waters represents an important challenge to be overcome, especially regarding its contamination by domestic wastewater effluents. In this context, this research presented an analysis by using an innovative wastewater treatment system for domestic effluents based on the electro-oxycoagulation approach...

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