Article
Chemistry, Physical
Phillip Johnson, Anna Trybala, Victor Starov, Valerie J. Pinfield
Summary: This work discusses the environmental impacts of synthetic surfactants and presents biosurfactants as potential alternatives with advantages such as low toxicity and high biodegradability. Despite efforts to increase production yields, research on broader industrial and consumer applications of biosurfactants is lacking, highlighting the need for further investigation in this area.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Environmental Sciences
Zhanfei He, Yiting Xu, Wenyi Wang, Xiaoliang Yang, Zhengzhong Jin, Daoyong Zhang, Xiangliang Pan
Summary: Tailings are a significant type of hazardous waste, and their treatment is challenging and expensive. This study proposes a low-cost technique that combines microbially induced carbonate precipitation (MICP) and inorganic additives. Results show that CaO is the most effective additive, with an optimum dosage of 5%. The MICP-CaO coupled technique demonstrates high effectiveness in stabilizing heavy metals in tailings, with passivation rates 2%-866% higher than single techniques.
Article
Engineering, Environmental
Lili Zheng, Hai Lin, Yingbo Dong, Bing Li, Yanrong Lu
Summary: In this study, a bacterial strain called Paracoccus denitrificans AC-3 was found to effectively and inexpensively remove ammonia and multiple heavy metals from landfill leachate through heterotrophic nitrification aerobic denitrification and carbonate precipitation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Ibeth Guevara-Lora, Norbert Wronski, Anna Bialas, Honorata Osip, Cezary Czosnek
Summary: There is a growing interest in using plant waste for environmental protection materials. This study focused on preparing silica powders from various biomass materials, such as horsetail, common reed, wheat, and rye straws. The powders were obtained through a simple and low-cost procedure, which involved leaching the biomass materials in a boiling HCl solution, incinerating the samples, and removing the organic components. The resulting biosilica powders showed high purity and mainly consisted of SiO2. The horsetail-derived biosilica exhibited good adsorption capacity for removing Cr(VI) ions from water, particularly after surface modification with a surfactant. The biosilica also demonstrated low cytotoxicity to human endothelial cells, indicating its potential for safe use in environmental remediation.
Article
Environmental Sciences
Bo Ke, Hoang Nguyen, Xuan-Nam Bui, Hoang-Bac Bui, Yosoon Choi, Jian Zhou, Hossein Moayedi, Romulus Costache, Thao Nguyen-Trang
Summary: Heavy metals in water and wastewater are a significant environmental issue affecting human health. The use of biochar systems can help remove heavy metals, but the efficiency depends on biochar characteristics, metal sources, and environmental conditions. Artificial intelligence models can accurately predict heavy metal sorption onto biochar.
Article
Engineering, Environmental
Tianhong Nie, Xing Yang, Hanbo Chen, Karin Muller, Sabry M. Shaheen, Joerg Rinklebe, Hocheol Song, Song Xu, Fengchang Wu, Hailong Wang
Summary: This study investigated the influence of aging on pig- and P. orientalis-derived biochars on the sorption capacity for Cd and Zn in biochar-treated soils. The sorption capacity increased with biochar application rates, and aging led to enhanced sorption capacity due to increased oxygen-containing functional groups. The presence of DEP enhanced sorption capacity in fresh biochar treatments, but not in aged treatments.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Nandita Singh, Abhishek Singh, Tirthankar Banerjee, Abhishek Chakraborty, Karine Deboudt, Mahesh Mohan
Summary: This study systematically investigated the health risks of exposure to particulate-bound metals of different sizes and analyzed their sources. The results showed that resuspensions of crustal and road dust were the main sources of metals, and industrial emissions and biomass/waste burning were the major contributors to health risks. Metal-contaminated food ingestion posed non-carcinogenic risks, while inhalation of carcinogenic metals increased the risk of cancer. The health risks associated with exposure to size-segregated airborne metals were within the tolerable level but exceeded the safe level of exposure.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Environmental Sciences
Claudia L. Bianchi, Ridha Djellabi, Cristina Della Pina, Ermelinda Falletta
Summary: The engineering of alternative adsorbents with better functional and sorbing ability in purifying wastewaters has attracted attention. Polymers are considered attractive soft materials in environmental remediation due to their unique properties. Different synthesis methods of polyaniline were explored, showing varying sorption abilities and potential for environmental applications.
Article
Environmental Sciences
Abdulmohsen Almalawi, Asif Irshad Khan, Fahad Alqurashi, Yoosef B. Abushark, Md Mottahir Alam, Sana Qaiyum
Summary: This article presents a novel RODL-HMSEP model based on biochar design, which can be used for predicting the adsorption performance of heavy metals in different biochar properties. By utilizing density clustering and deep belief network techniques, heavy metals can be efficiently removed from wastewater.
Review
Environmental Sciences
Biswajita Pradhan, Prajna Paramita Bhuyan, Rabindra Nayak, Srimanta Patra, Chhandashree Behera, Jang-Seu Ki, Andrea Ragusa, Alexander S. Lukatkin, Mrutyunjay Jena
Summary: This review examines the changes in physicochemical and molecular characteristics of microalgae in response to heavy metals and metalloids stress and discusses the use of biotechnological methods to enhance their bioaccumulation and remediation capabilities.
Article
Engineering, Chemical
Zhiqiang Guo, Lei Sun, Hui Hou, Jian Zhou, Yuan Li, Liangliang Hu, Jinzhang Xu
Summary: The biomimetic composites of maple leaf-like MnO2-SiO2@PDA have shown excellent sorption capabilities for Cu(II), Cd(II) and Ni(II) ions, with high sorption capacities and resistance to salt interference. The main sorption mechanism is the strong surface complexation between functional groups on the MnO2-SiO2@PDA and the metal ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Mohamed A. Saad, Mahmoud A. S. Sakr, Vasil A. Saroka, Hazem Abdelsalam
Summary: Using density functional theory, this study investigates the interaction between covalent organic frameworks and heavy metal pollutants, finding that specific functional groups can effectively form strong chemical bonds with harmful metals, thereby increasing the reactivity of covalent organic frameworks.
Article
Chemistry, Multidisciplinary
Fozia Batool, Rahman Qadir, Fatima Adeeb, Samia Kanwal, Ehab A. Abdelrahman, Sobia Noreen, Bedur Faleh A. Albalawi, Muhammad Mustaqeem, Muhammad Imtiaz, Allah Ditta, Humaira Yasmeen Gondal
Summary: This study investigated the sorption of cadmium and nickel by biochar derived from plant biomass. The results showed that biochar had better adsorption efficiency for metal ions, and the adsorption mechanism was physical adsorption. Biochar can be a cost-effective alternative for removing metal ions from solutions.
Article
Environmental Sciences
Meghna Sharma, Neelima Satyam, Krishna R. Reddy, Maria Chrysochoou
Summary: This study investigates the potential of bio-mediated calcite precipitation for strength improvement and immobilization of heavy metals in contaminated soils. The results show that the introduction of Sporosarcina pasteurii and cementation solution reduces hydraulic conductivity and increases ultrasonic pulse velocity and unconfined compressive strength. The leaching tests indicate that the immobilization of lead and hexavalent chromium is proportional to the amount of calcite precipitated, while zinc is completely leachable and its immobilization is pH-dependent.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Chaamila Pathirana, Abdul M. Ziyath, Prasanna Egodawatta, Nilanthi J. G. J. Bandara, K. B. S. N. Jinadasa, Erick R. Bandala, Buddhi Wijesiri, Ashantha Goonetilleke
Summary: This study identifies a method for determining the breakthrough time of a column sorption system used in industrial water treatment. Laboratory column set-up requires significant resources, so a more resource-efficient batch experiment can be used to estimate the breakthrough time of a column system.
Article
Geochemistry & Geophysics
Svetlana Bortnikova, Natalya Abrosimova, Nataliya Yurkevich, Valentina Zvereva, Anna Devyatova, Olga Gaskova, Olga Saeva, Tatyana Korneeva, Olga Shuvaeva, Nadezhda Pal'chik, Valery Chernukhin, Alexander Reutsky
Article
Geochemistry & Geophysics
M. N. Kolpakova, O. L. Gaskova, O. S. Naymushina, A. Karpov, A. G. Vladimirov, S. K. Krivonogov
APPLIED GEOCHEMISTRY
(2019)
Article
Geochemistry & Geophysics
A. E. Boguslavsky, O. L. Gaskova, O. S. Naymushina, N. M. Popova, A. Safonov
APPLIED GEOCHEMISTRY
(2020)
Article
Environmental Sciences
Marina Kolpakova, Olga Gaskova, Svetlana Borzenko, Sergey Krivonogov, Olga Naymushina, Natalia Rudaya
Article
Geochemistry & Geophysics
Svetlana Bortnikova, Olga Gaskova, Nataliya Yurkevich, Olga Saeva, Natalya Abrosimova
Article
Environmental Sciences
Svetlana Borisovna Bortnikova, Nataliya Victorovna Yurkevich, Olga Lukinichna Gaskova, Anna Yurevna Devyatova, Irina Igorevna Novikova, Sergei Sergeevich Volynkin, Alexey Vladimirovich Mytsik, Valentina Alexeevna Podolinnaya
Summary: Field and laboratory experiments were conducted to determine the volatility of chemical elements in sulfide tailings. The concentrations of elements in condensates from the top of the heap exceeded background values by 2-3 orders of magnitude. High concentrations of calcium and magnesium were found in laboratory condensates, while other elements like iron and cadmium were lower.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Alexey V. Safonov, Anatoly E. Boguslavsky, Olga L. Gaskova, Kirill A. Boldyrev, Olga S. Shvartseva, Albina A. Khvashchevskaya, Nadezhda M. Popova
Summary: This study reveals that nitrate influences the redox conditions in groundwater, impacting the behavior of uranium, and highlights the need to assess the long-term stability of uranium in environments related to radioactive sludge storage facilities.
APPLIED SCIENCES-BASEL
(2021)
Article
Geochemistry & Geophysics
S. B. Bortnikova, N. V. Yurkevich, O. L. Gaskova, S. S. Volynkin, A. V. Edelev, S. P. Grakhova, O. I. Kalnaya, A. Sh Khusainova, M. P. Gora, A. A. Khvashchevskaya, O. P. Saeva, V. A. Podolynnaya, V. V. Kurovskaya
Summary: The study found significant changes in the forms of metals and metalloids in the waste over a 20-year storage period, with concentrations of water-soluble metals and arsenic decreasing significantly, while arsenic remained mobile.
Article
Geosciences, Multidisciplinary
Yu A. Kalinin, R. Kuzhuget, A. Sh Khusainova, O. L. Gaskova, Yu Butanaev
Summary: This article examines the morphological features of primary and oxidized ores from the Kopto gold deposit. Through computer thermodynamic modeling, the transformation process and stability conditions of gold are analyzed, providing valuable information on its redistribution and origin.
RUSSIAN GEOLOGY AND GEOPHYSICS
(2022)
Article
Environmental Sciences
Olga Shvartseva, Tatiana Skripkina, Olga Gaskova, Ekaterina Podgorbunskikh
Summary: This study estimated the adsorption properties of peat for copper ion removal and quantitatively reproduced the modifications using instrumental analysis. Mechanical activation and mechanochemical activation led to significant changes in the interaction energy and acceptor properties. Copper adsorption was predominantly chemical and modifications increased the adsorption capacity of peat.
Article
Engineering, Petroleum
A. Sh Khusainova, Yu A. Kalinin, O. L. Gaskova, S. B. Bortnikova
Summary: The study of gold transformation in the long-term stored tailings of pyrite-polymetallic ore deposits provides insights into the complex nature of gold mobilization processes, showcasing the formation of nano- and micro-size gold particles, lamination, and veinlets. The presence of different chemical compositions in the gold formations is attributed to specific physical and chemical conditions, different primary gold sources, and geochemical barriers, with different complexes responsible for the mobility of gold.
Article
Geochemistry & Geophysics
A. V. Safonov, A. E. Boguslavsky, K. A. Boldyrev, O. L. Gaskova, O. S. Naimushina, N. M. Popova
Summary: This study presents experimental and numerical simulation of bioremediation in nitrate-, -sulfate-ions and uranium polluted aquifers near NCPP, showing that microbial consumption of oxidizers leads to a decrease in redox potential and favors the stabilization of uranium. The results are consistent with the mineral phase composition collected in situ in the discharge area of the polluted aquifer.
GEOCHEMISTRY INTERNATIONAL
(2021)
Article
Geosciences, Multidisciplinary
A. Sh Khusainova, O. L. Gaskova, Yu A. Kalinin, S. B. Bortnikova
RUSSIAN GEOLOGY AND GEOPHYSICS
(2020)
Proceedings Paper
Geochemistry & Geophysics
Olga Naymushina, Olga Gaskova
16TH INTERNATIONAL SYMPOSIUM ON WATER-ROCK INTERACTION (WRI-16) AND 13TH INTERNATIONAL SYMPOSIUM ON APPLIED ISOTOPE GEOCHEMISTRY (1ST IAGC INTERNATIONAL CONFERENCE)
(2019)
Proceedings Paper
Energy & Fuels
Anatoly Boguslavsky, Olga Gaskova, Olga Naymushina
2018 INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY AND ENVIRONMENT ENGINEERING (REEE 2018)
(2019)