Article
Environmental Sciences
Naveen Radhakrishnan, Sonam Taneja, Saurav Ambastha, Harsh Pipil, Anil Kumar Haritash
Summary: Sediment quality assessment is important for evaluating the quality of rivers and this study focuses on assessing heavy metal concentration in size-fractionated sediments of River Ganga and identifying sources of contamination. The results show that the sediments are contaminated and enriched with toxic metals, with Chinyalisaur, Devaprayag, and Rishikesh being classified as pollution hotspots. Natural sources contribute to aluminum and iron, while anthropogenic sources contribute to chromium, zinc, lead, nickel, copper, and cadmium. Immediate interventions are needed to control further contamination by restricting wastewater discharge into River Ganga.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Wawan Budianta
Summary: This study revealed significant heavy metal pollution in the stream sediment of the Tajum River, primarily due to artisanal mining activities. The distribution and mobility of heavy metals are influenced by mining activities, with Zn and Cd showing lower mobility in sediment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Bhanu Pratap Singh, Moharana Choudhury, Palas Samanta, Monu Gaur, Maniram Kumar
Summary: The study focused on heavy metal distribution patterns and ecological risk assessment in sediment samples from the Hindon River in Muzaffarnagar Region, India. Results showed high concentrations of Zn, Pb, Cu, Ni, and Cd, with Atali A exhibiting the highest pollution levels.
Article
Geochemistry & Geophysics
Michele Arienzo, Marco Trifuoggi, Luciano Ferrara, Carlo Donadio, Priyanka Mondal, Jonathan Muthuswamy Ponniah, Santosh Kumar Sarkar, Maria Toscanesi
Summary: This study investigated the impact of the monsoon season on heavy metal loads in the sediments of the Hooghly River in India from 2014 to 2017, a previously unexplored time frame. The results revealed significant correlations between certain metals, suggesting contributions from industrial activity. The monsoon season was found to significantly increase the transport of metals, mainly due to weathering of continental detritus. The levels of certain metals, especially nickel, posed a significant threat to the aquatic ecosystem.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Engineering, Environmental
Lorena S. Miranda, Godwin A. Ayoko, Prasanna Egodawatta, Ashantha Goonetilleke
Summary: Limited knowledge of the combined effects of water and sediment properties and metal ionic characteristics on the solid-liquid partitioning of heavy metals constrains the effective management of urban waterways. The study revealed that high salinity can increase the solubility of weakly-bound metals, while dissolved organic matter does not favor metal solubility.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Lorena S. Miranda, Buddhi Wijesiri, Godwin A. Ayoko, Prasanna Egodawatta, Ashantha Goonetilleke
Summary: The study reveals that the mineralogical composition of sediments plays a crucial role in the adsorption and desorption of heavy metals. Particulate organic matter is the most influential nutrient in heavy metals adsorption in riverine environments, while particulate phosphorus is more significant in estuarine conditions. Dissolved nutrients do not have a significant positive effect on the release of heavy metals in riverine areas, but dissolved phosphorus increases the transfer of specific metals from sediments to overlying water in estuarine conditions.
Article
Environmental Sciences
Youping Shou, Junjie Zhao, Yuxin Zhu, Jianzhe Qiao, Zhangfeng Shen, Wei Zhang, Ning Han, Avelino Nunez-Delgado
Summary: This study evaluated the potential health and ecological risks of heavy metal pollution in surface waters and sediments in Tianjin Nangang Industrial Zone, China. The results showed that heavy metal concentrations decreased over time, with arsenic posing the main carcinogenic risk to the environment.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Gunnar Berghman, Dirk Goossens
Summary: The study measured the concentrations of 13 chemical elements in urban street sediment in Leuven, Belgium, with Cu, Sb, Pb, and Zn showing the highest enrichment. Cu and Zn concentrations in Leuven exceeded those in most other cities. The Integrated Pollution Index for Leuven classified the city as very highly polluted on average.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Environmental Sciences
Naminata Sangare Soumahoro, N'guessan Louis Berenger Kouassi, Koffi Marcellin Yao, Edith Kouassi Kwa-Koffi, Aka Marcel Kouassi, Albert Trokourey
Summary: The study investigated the impact of the Akouedo dumpsite in Abidjan, Cote d'Ivoire, on metal contamination in the surrounding environment. It was found that the dumpsite significantly polluted the sediments with Cu, Zn, Cd, and Pb, potentially causing high ecological risks.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Chaka Mohajane, Munyaradzi Manjoro
Summary: This study investigated sediment-associated heavy metal contamination and ecological risk along the Molopo River in Mahikeng, South Africa. Most heavy metal concentrations were below average shale, but some heavy metals were anthropogenically enriched at affected sites.
Article
Environmental Sciences
Shan Gao, Xiong Yang, Yucheng Ding, Yihui Xia, Yumiao Song, Jiaying Liu, Kewu Pi, Andrea R. Gerson
Summary: In this study, a combination of electrokinetic and chemical immobilization was used to remediate Cd and Pb polluted river sediments. The immobilization ratios for Cd and Pb were achieved by adjusting the concentrations of the immobilization reagents and the applied voltage. The enhancement effect of the electric field is mainly due to the increased contact between the immobilization reagents and the heavy metals.
Article
Engineering, Environmental
Ran Wen, Xiong Yang, Shuang He, Jian Wu, Hongmei Ge, Zheng Chi, Yafei Shi, Shulian Wang, Andrea R. Gerson, Kewu Pi
Summary: Sediments play a crucial role in the storage of heavy metals in river and lake waters, and their chemical makeup influences the movement of these elements within the ecosystem. Therefore, it is essential to remediate polluted sediments for the overall health of the ecological environment. This study proposes a simple method for extracting heavy metals from contaminated sediment using horizontal electroosmosis, and investigates the effect of different washing reagents and operational parameters. Citric acid and EDTA were found to be the most effective in removing Cd and Pb, respectively. After 13 days of electrokinetic washing, the removal ratio of Cd by citric acid was 77.0%, and that of Pb by EDTA was 88.3%. The decrease in various fractions of the heavy metals upon their removal from the polluted sediment was observed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Dickson Boboria, Matakite Maata, Francis S. Mani
Summary: The study reveals that the heavy metal levels in sediments of Marovo Lagoon are significantly higher compared to other Pacific studies, attributed to intense logging activities around the bay and other potential anthropogenic sources such as mining and waste discharge.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Yu Wang, Luyu Liang, Xinyi Chen, Yi Zhang, Fubin Zhang, Fei Xu, Tuo Zhang
Summary: Due to fast-paced urbanization, industrial sand mining activities have put immense pressure on the environment, particularly leading to severe environmental problems in aquatic ecosystems. However, there is still incomplete understanding of the impact of sand mining on the remobilization of heavy metals in river sediments. This study extensively investigated this effect in the Jialing River using various techniques and found that sand mining activities resulted in the accumulation and remobilization of lead and cadmium.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Lorena S. Miranda, Godwin A. Ayoko, Prasanna Egodawatta, Wan-Ping Hu, Osama Ghidan, Ashantha Goonetilleke
Summary: This study examines the influence of sediment physico-chemical properties on metal bioavailability, highlighting the specific behaviors of different metal elements in sediments, and provides valuable information for future research in this area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Editorial Material
Geosciences, Multidisciplinary
T. Matys Grygar
Review
Biodiversity Conservation
Tomas Kumpan, Jiri Kalvoda, Ondrej Babek, Tomas Matys Grygar, Jiri Fryda
Summary: The well-accessible Devonian-Carboniferous boundary successions in the Czech Republic belong to the Brunovistulian Unit of the Variscan Rhenohercynian Zone within the Bohemian Massif. Detailed studies in the Moravian Karst area have revealed continuous carbonate sedimentation with distinctive features of carbonate turbidites and hemipelagic successions. In the Lesni lom quarry, a complete succession of conodont zones can be documented and correlated with coeval foraminiferal zones, providing insights into the Hangenberg Crisis and its phases.
PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
(2021)
Article
Environmental Sciences
T. Matys Grygar, O. Babek, J. Sedlacek, Z. Lend'akova, M. Famera, J. Stojdl, J. Pacina, J. Tolaszova, S. Krizenecka
JOURNAL OF SOILS AND SEDIMENTS
(2020)
Article
Geography, Physical
Ewa Szarek-Gwiazda, Andrzej Kownacki, Paraskeva Michailova, Julia Ilkova, Agnieszka Pociecha, Dariusz Ciszewski
QUATERNARY INTERNATIONAL
(2020)
Article
Environmental Sciences
Agnieszka Pociecha, Agata Z. Wojtal, Ewa Szarek-Gwiazda, Anna Cieplok, Dariusz Ciszewski, Sylwia Cichon
Article
Environmental Sciences
Martin Famera, Tomas Matys Grygar, Dariusz Ciszewski, Agnieszka Czajka, Miguel angel Alvarez-Vazquez, Karel Hron, Kamila Facevicova, Vera Hylova, Stepanka Tumova, Ivo Svetlik, Kristyna Zimova, Katerina Dvorakova, Bartlomiej Szypula, Michal Hosek, Jiri Henych
Summary: The Industrial Revolution led to global contamination of lowland rivers and floodplain soils with heavy metals, particularly in former coal mining regions like Ostrava Coal District in Czech and Upper Silesia mining region in Poland. Studies revealed significant increases in risk element concentrations downstream from industrial areas, exceeding safety limits for agricultural soils in some places. Sediments within and outside the inter-embankment zone showed no systematic difference in contamination levels, suggesting contamination occurred mainly before dike construction in the 19th century.
Article
Environmental Sciences
Tomas Matys Grygar, Martin Famera, Michal Hosek, Jitka Elznicova, Jan Rohovec, Sarka Matouskova, Tomas Navratil
Summary: Willows act as plant pumps, translocating Cd and Zn from sediment bulk to top strata in floodplains. Senescing foliage of common plant species can increase Cd and Zn ratios in top strata, not related to sediment concentrations. Groundwater and plant foliage reflect shallow groundwater pH, mobilizing risk elements due to typical subsurface sediment acidity in floodplains.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Dariusz Ciszewski, Mateusz Sobucki
Summary: Land subsidence is closely related to water withdrawal and mining activities. It can increase the risk of flooding in river valleys, but can be mitigated through channel alignment and raising of flood dykes. This study focuses on the Chechlo River reach in southern Poland and examines the characteristics of sediments and channel geometry. The findings suggest that the sediments in the subsidence basin differ from those in unaffected river reaches in terms of stratigraphy and accretion rate.
Article
Environmental Sciences
Tomas Matys Grygar, Michal Hosek, Tomas Navratil, Jan Bednarek, Jindrich Honig, Jitka Elznicova, Jan Pacina, Jan Rohovec, Jan Sedlacek, Oliver Sass
Summary: Our study focuses on mercury contamination hotspots originating from a chemical factory in Germany. The legacy of the factory has been consistently endangering the river ecosystem in the Czech Republic. We identified the peak contamination of fine sediments entering a downstream reservoir and summarized the historical and current mercury concentrations in the river system.
Article
Geography, Physical
Jitka Elznicova, Timea Kiss, Hans von Suchodoletz, Tamas Bartyik, Gyorgy Sipos, Zuzana Lendakova, Kamila Facevicova, Ivana Pavlu, Jaromir Kovarnik, Tomas Matys Grygar
Summary: This paper investigates the transformation of the channel pattern of the Jizera River in Czechia, from meandering to low-sinuous. By analyzing the topography and historical maps, it is found that the transition is likely to be climatic-driven, possibly influenced by past climatic extremes.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Environmental Sciences
Tomas Matys Grygar, Jitka Elznicova, Stepanka Tumova, Tomas Kylich, Jan Skala, Karel Hron, Miguel Angel Alvarez-Vazquez
Summary: The aim of this work was to construct maps of anthropogenic contamination of agricultural soils in Czech Republic by risk elements. Conventional approaches to geochemical maps can only visualize extreme contamination, while weak and/or diffuse contamination requires expert opinion to distinguish natural and anthropogenic factors. Geogenic and lithological anomalies play important roles in understanding contamination sources. Element concentration ratios, such as Co, Cu, Pb, and Zn, can be used to separate geogenic and lithogenic anomalies. Expert opinion is necessary to distinguish anthropogenic contamination from natural variability. The interpretation of geochemical maps and identification of anthropogenic contamination become more complicated in larger and more heterogeneous mapped areas.
ENVIRONMENTAL EARTH SCIENCES
(2023)
Article
Environmental Sciences
Ewa Szarek-Gwiazda, Dariusz Ciszewski, Andrzej Kownacki
Summary: The effects of channelization on macroinvertebrate communities in mountain rivers have not been well recognized. This study compared two north Carpathian mountain rivers, one channelized with concrete sills and the other with block ramps. The channel modifications altered the river gradient and flow velocity, leading to changes in habitat conditions and dominance of different macroinvertebrate communities.
Article
Environmental Studies
Johana Zacharova, Jiri Riezner, Jitka Elznicova, Iva Machova, Karel Kubat, Diana Holcova, Michal Holec, Jan Pacina, Jiri Stojdl, Tomas Matys Grygar
Summary: Studying the distribution and characteristics of pluziny is of great significance for the preservation and planning of agricultural landscapes, and it has been proven that pluziny has a positive impact on geodiversity and biodiversity.
Article
Geosciences, Multidisciplinary
Tomas Matys Grygar, Jitka Elznicova, Gyorgy Sipos, Timea Kiss
Summary: The study on the development of the Ohre River from the Late Glacial Maximum (LGM) to the present time reveals the impact of human activities on the floodplain, with the river changing from meandering to low sinuous during the Pleistocene/Holocene transition. This development was influenced by both natural factors like the Little Ice Age and anthropogenic activities, leading to river engineering in the 20th century to complete the incision process.