Article
Ecology
James H. Gearon, Michael H. Young
Summary: The study aims to determine the influence of geomorphology on shrub canopy structure, revealing that landscape position and surface age have significant effects on the canopy volume and shrub spacing of Larrea tridentata.
Article
Environmental Sciences
Xinru Yang, Peng Liu, Meng Yao, He Sun, Ruxue Liu, Jiayin Xie, Yongsheng Zhao
Summary: The study found that using molasses to remediate Cr(VI)-contaminated groundwater is cost-effective and can effectively avoid secondary contamination. The addition of ascorbic acid can promote the rate of bioremediation, while NaHCO3 can buffer pH changes and promote the precipitation of Cr(III).
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Geochemistry & Geophysics
Ioannis-Porfyrios D. Eliopoulos, George D. Eliopoulos, Maria Economou-Eliopoulos
Summary: The study explores the reasons for the elevated Cr(VI) concentrations in coastal groundwater and highlights the potential relationships between seawater components and Cr(VI). It also emphasizes the impact of oxidation and reduction processes on Cr(VI) concentrations, as well as the role of borate ions in maintaining the stability of Cr(VI) in coastal groundwater.
Article
Green & Sustainable Science & Technology
Andrew B. Cundy, Lorraine LaFreniere, R. Paul Bardos, Eugene Yan, Robert Sedivy, Caroline Roe
Summary: The large-scale integrated phytomanagement system at Murdock, Nebraska has effectively mitigated CCl4 contamination over a 10+ year period, with Eastern Cottonwood playing an increasing role in removal. The system has not only achieved risk management but also brought wider social and environmental benefits through carbon sequestration and community engagement.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Thanasis Mpouras, Angeliki Polydera, Dimitris Dermatas, Nicola Verdone, Giorgio Vilardi
Summary: pH value is the most crucial factor influencing the adsorption efficiency of MWCNTs, with Cr(VI) adsorption being inversely proportional to pH value and significantly decreased above 7. MWCNTs exhibit high adsorption capacity and the adsorption process is fast, being almost completed within 1 hour. The experimental results were interpreted using different isotherm models.
Article
Environmental Sciences
Meshal Abdullah, Zahraa Al-Ali, Ammar Abulibdeh, Midhun Mohan, Shruthi Srinivasan, Talal Al-Awadhi
Summary: Hydrocarbon-contaminated soils in arid regions pose a significant environmental challenge. This study utilizes remote sensing techniques to investigate the behavior of annual and perennial desert plants in different types of oil-contaminated soils in the Kuwait Desert. The results show that vegetation growth is influenced by soil type, with higher distribution rates observed for annual plants. The study also highlights the relationship between vegetation growth on clean sediment layers and vegetation growth on hydrocarbon-contaminated soils, as well as the accumulation of nutrient-rich soil due to aeolian sediment remobilization.
ENVIRONMENTAL RESEARCH
(2023)
Article
Microbiology
Zheng Li, Ravid Rosenzweig, Fengxian Chen, Ji Qin, Tianyi Li, Jincheng Han, Paula Istvan, Damiana Diaz-Reck, Faina Gelman, Gilboa Arye, Zeev Ronen
Summary: A crude oil spill in Israel's Negev Desert resulted in soil contamination and decreased soil hydrophobicity, posing a threat to plant survival. Researchers isolated and identified indigenous bacteria capable of producing biosurfactants and degrading hydrocarbons, and found that inoculating these bacteria into the contaminated soil significantly reduced hydrophobicity.
Article
Engineering, Environmental
Xiang Chen, Yihan Dai, Jin Fan, Xiaoyun Xu, Xinde Cao
Summary: The study successfully demonstrated that integrated technology can effectively remove Cr from contaminated groundwater and stabilize Cr in soil by using Fe-BC amended soil for remediation, removing about 71% of Cr and reducing leachability of Cr in soil by over 81%.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Z. Hatipoglu-Bagci, C. S. Bayari
Summary: The study found that the levels of chromium and other trace elements in surface water and groundwater samples from Mersin, Turkey are relatively high, especially in industrial areas. Some samples have exceeded the maximum permissible level of CrVI under Italian regulations, posing potential health risks to humans.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Environmental Sciences
T. Mpouras, N. Papassiopi, K. Lagkouvardos, C. Mystrioti, D. Dermatas
Summary: The study demonstrates the effectiveness of calcium polysulfide (CPS) as a reducing agent for treating Cr(VI)-contaminated aquifers, particularly in pump and treat methods. The minimum dose of CPS needed to reduce Cr(VI) from 1000µg/L to below the environmental limit of 50µg/L was found to be approximately 2.8 mg/L of sulfide anions. Additionally, CPS use did not significantly impact soil properties or the mobilization of soil elements.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Environmental Sciences
Liming Ren, Baoning Zong, Rui Zhao, Yulin Sun, Fanbin Meng, Ruoyu Wang
Summary: In this study, the mechanism of Cr(VI) contaminated aquifer remediation using nZVI@rGO was explored through experiments and characterization analysis. The results showed that the large reactive conjugated structure of rGO enhanced the electron transfer efficiency between Cr(VI) and nZVI@rGO, while the uniform accommodation of Cr(III) precipitates on rGO effectively retarded the surface passivation of nZVI.
ENVIRONMENTAL RESEARCH
(2022)
Article
Ecology
Daniel F. Shryock, Lesley A. DeFalco, Todd C. Esque
Summary: The need for active restoration in disturbed habitats in the arid southwestern United States, due to combination of ecosystem stressors, rapid climate change, and increasing landscape-scale development, has led to the emphasis on improved restoration practices and priority native seed mixes. Well-designed seed mixes can provide foundational ecosystem services and support wildlife and pollinator communities. A decision support tool, Mojave Seed Menus, has been developed to help restoration practitioners generate customized seed mixes for native plant restoration in the Mojave Desert.
ECOLOGY AND EVOLUTION
(2022)
Article
Geosciences, Multidisciplinary
Edward Kwicklis, Irene Farnham, Ronald L. Hershey, Ate Visser, John Hoaglund
Summary: By combining naturally occurring geochemical and isotopic groundwater tracers with historic data from the Pahute Mesa area in Nevada, USA, researchers gained insights into long-term regional groundwater flow patterns, mixing, and recharge dynamics. The study revealed that groundwater recharge is predominantly of Pleistocene age, except for localized areas near major ephemeral drainages, and identified a mixing zone where high-concentration groundwater merges with dilute groundwater, with a source of high Cl and SO4 traced back to a now-dry playa lake north of the study area. Patterns of groundwater flow indicate that the groundwater is flowing around the now-extinct Timber Mountain Caldera Complex towards discharge areas in Oasis Valley.
HYDROGEOLOGY JOURNAL
(2021)
Article
Engineering, Environmental
Aleksandra Pienkowska, Martyna Glodowska, Muammar Mansor, Daniel Buchner, Daniel Straub, Sara Kleindienst, Andreas Kappler
Summary: This study reveals the potential contribution of methanotrophs to the dissolution of As-bearing Fe(III) minerals, leading to the release of arsenic into groundwater.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Geography, Physical
Nicholas Lancaster, Steven N. Bacon, Thomas F. Bullard, Christina M. Neudorf, Amanda K. Keen-Zebert, David L. Decker, Matthew L. Boggs
Summary: The analysis of faulting patterns, hydrogeology, stratigraphy, sedimentology, and luminescence dating in the China Lake basin sheds light on the origins and development of Late Holocene dunes and sand ramps in the Indian Wells Valley. It was found that the dune and sand sheet deposits were derived from alluvial material sourced from granitic rocks in the Sierra Nevada and were concentrated in areas with sand-stabilizing vegetation influenced by high groundwater levels near active faults. Three episodes of sand accumulation were identified, indicating periods of enhanced rainfall followed by wind reworking. Understanding the influence of tectonics on hydrogeology can help in accurately interpreting landscape evolution and past hydroclimate variability.
QUATERNARY RESEARCH
(2022)