In this study, bioaugmentation and biostimulation were used to explore the efficiency of bioremediation of hexachlorocyclohexane (HCH)-contaminated soil in the laboratory. A complex microbial community (germ A, abbreviated as A) was used for bioaugmentation. The KNO3 and K2HPO4 (NP), wheat straw (JG), and glucose (PU) were used as exogenous amendments for biostimulation. Five treatments were set up:

The purpose of this study is to evaluate the influence of parameters, used in the monitoring and classification of the rivers water quality, for the analysis of environmental impacts in two important water resources in the interior of São Paulo State. Based on the complex networks theory for modelling, the used data refer to collections and laboratory analyses of water samples, carried out from 2006

The effects of the concentration of total suspended solids from municipal wastewater on the water infiltration process in a clayey soil were investigated as well as the suitability of infiltration models with different numbers of parameters. The experiment consisted of columns of soil of 20 cm long in which supply water and synthetic municipal wastewater with different concentrations of solids were

In this study, we focused on investigating the plastic microfibers and how their aging due to UV irradiation could be further aggravating their negative effects on the environment. Hence, we examined the microfibers of polypropylene (PP) and polystyrene (PS) as model microplastics to observe the induced surface changes caused by aging through UV irradiation when the plastic is discarded in the environment

Diverse aromatic mediators have often been used to increase the degradation of organic pollutants by Fenton reaction (Fe2+ + H2O2 → Fe3+ + HO● + HO−). The presence of reducing mediators can minimize the accumulation of Fe3+ in solution, which leads to accelerated Fe2+ regeneration and enhances the generation of reactive oxygen species, such as the HO● radical, i.e., the strongest oxidant in Fenton-based

Astronium graveolens is a native tree species from Atlantic Forest considered sensitive to O3. This study aimed to determine which environmental factors, including air quality and meteorological conditions, have the most significant influence on gas exchange and the appearance of visible foliar symptoms in this species. Saplings were potted and exposed in a standardized manner in an open area in the

Tropical peat water dissolved organic matter (DOM) fractions spectral parameters correlate with the formation of carcinogenic disinfection by-products (DBPs), haloacetic acids (HAAs). Peat water DOM has been fractionated using Superlite DAX-8, Amberlite XAD-4, and Amberlite IRA-958 resins to separate hydrophobic acid (HPOA), transphilic (TPH), hydrophilic-charged (HPIC), and hydrophilic-neutral (HPIN)

Municipal wastewater treatment plants (MWWTPs) are considered essential to protect human health and aquatic systems. However, several studies in the scientific field have identified adverse environmental effects in these treatment units that involve challenges in the water industry. Therefore, this work has the following objectives: (1) to understand the global context in which MWWTPs operate and (2)

Population growth results in the expansion of cities and brings with it the need for road structures that interconnect and facilitate the movement of people and cargo. However, together with the benefits, many negative impacts on the environment are associated with the construction of traffic routes and their structures, such as the degradation of surface water quality. This study aimed to evaluate

Iraq currently undergoing the problem of water shortage, although Iraq has two Rivers (Euphrates and Tigris) pass throughout most of its areas, and they have represented a major source of water supply. In the current research, to evaluate the quality of the Euphrates river in Iraq based on the values of total dissolved salts (TDS), the TDS concentrations were collected from sixteen sections along the

In conventional agriculture, several pesticides can be applied at the same stage of plant development, either individually or in mixtures and these compounds also reach aquatic ecosystems. The aim of the present study was to investigate the short-term effects of the insecticide Kraft® 36 EC (active ingredient — a.i. abamectin) and the fungicide Score® 250 EC (a.i. difenoconazole) on the zooplankton

Sugarcane, one of the world’s major crops, is used to produce sucrose and biofuel. Before harvesting, sugarcane is burned to facilitate manual cutting, generating ashes that may reach water bodies and cause the death of aquatic organisms. While studies have addressed the lethal effects of sugarcane ashes (SCA) on different fishes, little is known about the effects of sublethal SCA concentration on

Isotopic effects of carbonyls were investigated using the simulation reactions of carbonyls with the cysteamine derivatization. Furthermore, variations of carbon isotopic for three dominant carbonyls including formaldehyde, acetaldehyde, and acetone in the roadside air of Nanning were measured using a developed method. It was found that there was a small difference in δ13C values (0.04 to 0.50‰) between

Biodeterioration is one of the most important processes in metal pipeline corrosion, and it can be due to physical, chemical, and biological factors. Coatings rich in silver have been used to inhibit this undesirable phenomenon. In this study, the antimicrobial properties of several silver-containing products used as a coating in pipelines were determined on a pilot scale in order to evaluate the ability

This study aims to remove zinc by using banana peel from an aqueous medium. The peel was a lignocellulosic adsorbent and characterized by FTIR spectra, SEM–EDS images, and elemental analysis. The effect of contact time, pH, and adsorbent dosage on the sequestration of zinc was observed. The sorption process of zinc was well described with the pseudo–second-order kinetic and Langmuir isotherm model

Water is principally intended for direct consumption and for the production of food and beverages. It is also a valuable raw material in the industry. Despite the use of multi-stage treatment processes, the quality of drinking water may still be a concern in some countries due to the presence of toxic pollutants, often challenging to remove through the conventional treatment process. The presence of

This study aimed to better understand the impact of different bauxite residues (BR) on the germination and the development of Sinapis alba (white mustard). Unamended BR from Provence, France (PRO), and Guinea (GUI) bauxite were selected, and modified bauxite residues from PRO and GUI (MBR-PRO and MBR-GUI) were obtained by gypsum application and repeated leaching, in order to reduce their pH, electrical

The air pollutant ozone (O3) is a phytotoxic oxidative stressor, leading to visible foliar injury and plant growth decline. Plant growth-promoting bacteria (PGPB) are emerging as an eco-friendly tool for improving plant growth under stress. In order to test PGPB as a tool for alleviating O3 stress in plants, an O3 sensitive genotype (Phaseolus vulgaris L. cv S156) was inoculated with native (rhizobacterial;

The Animas River provides irrigation water in northwestern New Mexico and the Navajo Nation. Concerns regarding the river water quality arose on August 5, 2015, when approximately 11.35 million liters of heavy metal contaminated water was accidentally released from the Gold King Mine into the Animas River. This study sought to determine the total concentrations of 7 heavy metal(loid)s (As, Pb, and

This article presents a systematic review of the literature using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method associated with a bibliometric analysis on global perspective of technological advances in waste-to-energy (WTE). OpenRefine and VOSviewer software supported the bibliometric analysis. It was possible to establish the scientific gap through the correlation

Among numerous sustainable advanced nanomaterials, nanocellulose is receiving increasing attention for its utilization in water treatment technologies due to its various specific properties and functionalities. The term “nanocellulose” is used for cellulosic material having a nanoscopic scale (or nanoscale) for their dimensional characteristics. It can be obtained in three different forms, which are

Forests within major cities, such as Table Mountains, Afromontane forests, are constantly subjected to industrial and urban pollution sources. Cape Town is one of the most profound areas in the world for plant extinction and already has a high occurrence of threatened species. The objective of this study was to determine the concentrations of the metals, aluminium and iron, commonly emitted from anthropogenic

In Australia, the regulatory framework for assessing the risk of soil contamination assumes there is minimal risk from the natural enrichment of potentially toxic elements in soil. When this assumption is applied to land cleared for anthropogenic purposes, non-adapted biota including humans, domestic animals and garden plants can be exposed to these soils. While the impacts of natural arsenic (As)

The present work provides the first knowledge about the diversity and functionality of the microorganisms occurring in oily bilge wastes, from the port of Mar del Plata, Argentina. We used a culture independent approach, based on massive sequencing of the 16S rRNA gene (Illumina), to analyze the microbiome structure from different oily bilge wastes. To gain insight into functional biomarkers for hydrocarbon

Laundry wastewater has a high amount of dirt from the washed items and chemical additives used in washing process. Aiming the primary treatment of this type of wastewater, three different natural coagulants (Tanfloc POP, Tanfloc SL, and Tanfloc SG) were evaluated in the removal of color and turbidity by the coagulation/flocculation/sedimentation process (C/F/S). The results showed that the time between

Few aquatic plants can accumulate As from flooded soils. Given the high toxicity and bioavailability of As in these environments, a study was carried out in Brazil to test the As phytoextraction potential of Typha domingensis and Eleocharis acutangula, comprising three cutting/regrowth cycles of 120 days each. The species were grown in uncontaminated (control), moderately contaminated (75 mg kg−1 As)

Six bioretention filter columns were designed to study the effects of the bioretention system on surface runoff reduction through rainfall simulation water distribution experiments, and the relationship between the physicochemical properties of contaminated fillers and microbial community structure was analyzed. Results show that (1) the water volume and load reduction effect of traditional bioretention

The growing global concern with water resources management has driven the search for more effective treatments for industrial effluents. The produced water is inserted in this scenario as one of the largest effluents generated by the oil industry. Besides, it cannot be discarded or reused without proper treatment due to its complex and toxic chemical composition. A bibliometric study was performed

Soil enzyme activities are often used as indicators of soil contamination. The responses of the activities of specific soil enzymes, dehydrogenase, acid phosphatase, β-glucosidase, carboxylesterase, and urease to different land uses (soybean and rice crops, and a reference site) were analyzed. Changes in activity at the start and end of each crop cycle were quantified. In general, the catalytic activity

Concentrated pig production is a major source of environmental pollution. Metal–organic frameworks (MOFs) show potential for reducing heavy metal pollution. Two zirconium-based octahedral MOFs, UiO-66 and UiO-66-NH2, were prepared by solvothermal method and were characterized by XRD, SEM, FT-IR, and BET. The adsorption capacity, treatability, and reusability of the adsorbents were tested in batch experiments

Even though sediment Escherichia coli is a common source of contamination in freshwater environments, their characteristics such as virulence genes, biofilm forming capacity, antibiotic resistance, and level of reactive oxygen species (ROS) are not well understood. This study examined E. coli from freshwater sediments, sewage, and a collection of O157 isolates. Multiplex PCR analysis revealed that

Reliable stable indicators are very important for assessing soil quality. This paper compares the dynamics of microbial parameters in two different soils (rich/poor in organic carbon), contaminated in laboratory experiments with an equal dose of heavy metals (HMs) after 30 and 90 days. For this purpose, the changes in the number, biomass, and taxonomic structure of bacterial and fungal communities

Groundwater from the Mocorito River aquifer in Mexico has been historically employed for both human consumption and irrigation of its overlaying agriculture fields. The aim of this research was to investigate the levels and distribution of potentially toxic elements (PTEs) in the aquifer to determine their sources and to assess their potential health risks. Groundwater samples were collected from wells

Diesel fuel contamination of aquifers is a global environmental problem. In recent years, in situ thermal remediation (ISTR) has attracted much attention owing to its advantages of high removal rate and rapid remediation. In this study, the treatment of a diesel-contaminated aquifer with thermal conduction heating (TCH) was studied. And for the purpose of making full use of the TCH residual heat, its

Phytomanagement techniques using native species allow the recovery of contaminated soils at low cost and circumvent the ecological risks associated with the use of non-native species. In this context, a paradigmatic brownfield megasite highly contaminated by As and Pb was sampled in order to analyze soil–plant interactions and identify plant species with phytoremediation potential. A survey was first

Predation is known to play a prominent role in maintaining ecosystem structure and functioning. Despite metals being known to potentially affect predation in aquatic ecosystems, few studies have been conducted, so far, with the aim of evaluating this interplay. In the present study, the effects of four metal salts (copper, cadmium, mercury, and manganese) on the feeding rates and food preference of

This study was carried out to investigate the efficacy of electrokinetics to remediate two identical soft kaolinite clay slurries with a water content of 70%. The first slurry was contaminated with copper at a concentration of 150 mg/kg of dry soil and the second with cadmium at the same concentration. The tests were performed in four identical electrokinetic columns (two for the electrokinetics tests

In this paper, nutrient recovery from sewage sludge as struvite using pulsed electric field (PEF) technique was performed. Box-Behnken response surface methodology (BBD) was used to determine the best struvite formation conditions. NH4-N removal efficiency (Y1) and PO4-P removal efficiency (Y2) were considered response functions, while the pH (X1), magnesium concentration (X2, mM), and phosphate concentration

Nitrogen removal and nitrous oxide (N2O) emission in a lab-scale constant-flow multiple anoxic (A) and aerobic (O) process, combined with the addition of suspended carriers, were investigated. Under steady state, 99.9% of ammonia nitrogen (NH4-N), 76.8% of orthophosphate, and 80.2% of total inorganic nitrogen removal efficiency was achieved. The N2O emission factor during nitrification was 0.8–1.9%

Treatment wetlands for raw wastewater from small communities (< 2000 p.e.) represent 20% of the wastewater treatment plants in France today. The classical French Vertical Flow Treatment Wetland consists of two stages filter beds intermittently fed with raw wastewater (inflow concentrations TSS 387 ± 70 mg/L, COD 880 ± 188 mg/L, TKN 110 ± 16 mg/L). The system has a good removal performance for TSS and

Mercury is a potential contaminant of the aqueous systems that needs to be removed from wastewaters even in trace concentrations due to its hazardous effects on environment and human health. Agricultural and industrial wastes are produced in abundance in many agro-industrial activities and have no commercial costs associated with them. The Hg(II) ions can establish bonds with the functional groups

Pesticide use generates wastewaters from its handling and from washing of spraying equipment, bringing concern about punctual discharge. Biobeds are biopurification systems for pesticide residues disposal, representing safe alternatives to avoid soil contamination. Peat that composes the original biomixture is not available all around Brazil. The aim of this work was to evaluate the efficiency of two

Himalaya is one of the youngest and greatest mountain ranges in the world and is one of the world’s most erosion-prone regions. Reliable information on the basin hydrology, physico-chemical weathering, and runoff dynamics is essential to develop an appropriate policies for sustainable, socially acceptable, ecological, and economically viable development of the mountainous rivers. The current study

Climatic changes have altered the water cycle, leading to more frequent occurrences of natural disasters, such as floods. In such events, quality of life is compromised due to environmental changes and widespread of pathogens. Unfortunately, scientific knowledge on bacteria behavior during different hydrological events is still scarce, and such knowledge is essential for the decision-making process

Estrogens are known to have an adverse impact on the reproductive functions of aquatic animals in natural waters. However, the estrogen levels are usually below the detection limits and vary drastically in the surface water, making it difficult to assess the environmental exposure in watershed management. While dynamic models are useful to bridge the data gaps on estrogen levels in surface water, the

The present work aims to evaluate the potential for bioremediation and CO2 fixation by cultivating the microalgae of the genus Chlorella minutissima in cassava wastewater. Experimental work investigated the growth of microalgae in the effluent and determined its growth rate based on different dilutions. Four culture media scenarios were created. The values measured in the laboratory were compared with

The aim of this study was to analyse the impact of velocity in the hydroponic lagoon used as the 3rd stage of municipal wastewater treatment on washing out of the particles suspended in the sewage as well as settled on the bottom of the hydroponic ditch. In order to analyse the flow velocity in the lagoon, 12 cross-sections were determined at points where the speed and motion of particles can change

Air pollution is a problem faced by most countries across the globe. The modeling and evaluation of the probabilistic behavior of air pollution are crucial in providing useful information that can help in managing the environmental risk and planning for the adverse effects of air pollution. For modeling of air pollution, several statistical approaches have been considered; however, only a few approaches

Since conventional biological treatment methods are not sufficient alone to treat landfill leachate, this study investigated the efficacy of the heterogeneous Fenton process as a preliminary treatment technique. With this aim, a two-level factorial design combined with the response surface methodology (RSM) was used to optimize the operating parameters for the heterogeneous Fenton process used for

Mining plays an essential role in resource-rich countries given that it constitutes a source of raw materials and incomes capable of contributing to the economic growth. However, with the intensive mechanisation of mining operations and the modernisation of the ore-processing technologies in view of increasing the productiveness, growing amounts of mineralised rocks are currently excavated from open

In the agroecosystem, titanium dioxide nanoparticles are used in fertilisers, pesticides, remediation and bio-sensors. These applications lead to a pervasive and inevitable distribution of TiO2 NPs in the agroecosystem. It is very important to understand the behaviour of TiO2 NPs in the soil and to assess their impact on the agroecosystem. This review aims to provide an overview of the fate and behaviour

Lead (Pb) is one of the greatly toxic heavy metals that can enter into the biological system through food chain and induce serious health impairments. Lead ion (Pb (II)) can be released in the environment through natural and anthropogenic sources. Among different types of remediation techniques, adsorption is one of the most well-accepted techniques due to its economic feasibility and versatility as

Soil moisture assessment on production land is gaining more attention as one of the critical factors and had a remarkable impact on agriculture production, life as well as global warming. Bibliometric analysis is performed by extracting datasets from SCOPUS from 2000 to 2020 to analyse soil moisture using remote sensing study and progress in the last two decades. The outcome indicates that study on

The anti-oxidative potential of Rhamnidium elaeocarpum extract was assessed using a green chemical bottom-up approach to produce ~ 80 nm cubic Fe3O4 nanoparticles. The protocol makes use of FeCl3 as the only precursor of magnetite, and it allows the obtaining of the material using water as solvent, and urea as a pH regulator. Besides, since the bark extract functions as both the capping and reducing

Heavy metal pollution in soil and water has been of worldwide concern due to their biotoxicity/ecotoxicity in the ecosystem, accumulation in the food chain, and persistence in the environment. Microbially induced carbonate precipitation (MICP) is known as an efficient and cost-effective biogeochemical process for the remediation of heavy metals in contaminated environment. This study reviews the mechanisms

In 1996, Lake Baikal was declared a UNESCO World Heritage Site. It contains nearly 25% of the world’s fresh surface water. In recent years, anthropogenic impacts on the ecosystem of Lake Baikal have been increasing due to the development of industry in the region, expansion of the tourist infrastructure, and recreational areas of the coastal zone of the lake. In addition, an increase in the frequency