Article
Engineering, Chemical
Di Zhang, Kaihong Yan, Yanju Liu, Ravi Naidu
Summary: This study investigated the immobilization efficiency of different amendments on arsenic, cadmium, and copper in co-contaminated soil. The results showed that red mud and biochar significantly reduced the concentrations of cadmium and copper, while the reduction of arsenic was limited. Phosphate reduced the concentrations of cadmium and copper, but not arsenic. Soil pH was found to be a key factor in driving the changes in soil enzymatic activity. Further research is needed to develop an efficient method for simultaneously immobilizing arsenic, cadmium, and copper using modified or combined amendments.
Article
Engineering, Environmental
Yingying Shao, Chao Tian, Wenjia Kong, Yanfeng Yang, Weiyi Zhang, Yanqiu Shao, Tao Zhang, Ziyang Lou, Ying Zhu
Summary: In this study, high strength ceramsite was synthesized using zinc contaminated soil and red mud as raw materials. The effects of sintering temperature and red mud addition on the properties of the ceramsite and immobilization of zinc were investigated. XRD analysis, SEM-EDS, and BCR sequential extraction technique were employed to analyze the crystal phases, microstructures, and zinc immobilization. Under optimal conditions (1150°C sintering temperature and 5% red mud addition), the sintered ceramsite exhibited good properties and met the Chinese National Standards without posing any environmental risk. High temperature and addition of red mud promoted the immobilization of zinc, with the main mechanism being the formation of ZnFexAl2_xO4 spinel and the encapsulation of glass phase. Therefore, ceramsite prepared from zinc contaminated soil and red mud at high temperature can effectively immobilize zinc.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Jian Zhang, Yifan Gao, Zhaofeng Li, Chuan Wang
Summary: A green geopolymer composite was prepared using red mud and granulated blast furnace slag to improve the utilization rate of red mud for heavy metal solidification and grouting engineering. The mechanical strength, leaching characteristics, and immobilization mechanisms of the geopolymer grouts were investigated through various analytical techniques, showing the involvement of red mud in the geopolymerization reaction and the effects of Pb2+ and Cr3+ on the mechanical strength. The results also demonstrate the successful immobilization of Pb2+ and Cr3+ through chemical bonding and physical sealing.
Article
Engineering, Environmental
Shucai Li, Jian Zhang, Zhaofeng Li, Chao Liu, Jingpeng Chen
Summary: A new type of red mud/slag/wastewater-based geopolymeric grouts (RSW) was prepared in this study, showing that wastewater can accelerate the geopolymerization process of RSW and have a good immobilization effect on heavy metals. Additionally, RSW has higher mechanical strength compared to cement-based grouts.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Zhi-Min Xu, Yu-Xue Zhang, Lei Wang, Chun-Guang Liu, Wei-Min Sun, Yi-Fan Wang, Sheng-Xing Long, Xiao-Tong He, Zheng Lin, Jia-Lin Liang, Jie-Xiang Zhang
Summary: The study found that red mud not only reduced Cd content in plants by increasing rhizosphere soil pH, but also by reshaping rhizobacteria communities. Specific taxa associated with growth promotion, disease resistance, and Cd resistance of plants preferentially colonized in the rhizosphere. Red mud facilitated the proliferation of soil microbes and the formation of microbial biofilms, which immobilized rhizosphere soil Cd through biosorption and chemical chelation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Keren Lu, Zhiren Zhao, Jin Cui, Cuiyun Bai, Hongling Zhang, Xuetao Zhao, Fengyun Wang, Mingzhu Xia, Yanru Zhang
Summary: The magnetic HD-MHAP nanoparticles were prepared and effectively immobilized radioactive Sr2+ and Co2+. The adsorption capacity of MHAP and 10HD-MHAP on Co2+ was 28.4 mg/g and 172.3 mg/g, respectively, and for Sr2+, the adsorption capacity was 54.9 mg/g and 320.7 mg/g. The low desorption percentages of Sr2+ and Co2+ ensure the captured radionuclides will not be released back into the aquatic systems. The formation of a ternary surface complex of MHAP-HDTMP-M (Sr2+ or Co2+) was identified as the key to the excellent immobilization performance of the HD-MHAP composite.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Duo-rui Zhang, Hong-rui Chen, Jin-lan Xia, Zhen-yuan Nie, Rui-yong Zhang, Axel Schippers, Wen-sheng Shu, Li-xiong Qian
Summary: The study demonstrates that the addition of RM facilitates the bio-oxidation of arsenopyrite and the formation of stable nanoparticle precipitates, reducing the release of arsenic. However, excessive addition of RM leads to an increase in solution pH, inhibiting the dissolution of arsenopyrite and the release of arsenic.
Article
Environmental Sciences
Junhao Qin, Xi Wang, Mujuan Deng, Huashou Li, Chuxia Lin
Summary: This study explores the possibility of using red mud as dopants to synthesize low-cost biochar-based composites. The results show that the red mud-biochar composites are superior to pristine biochar in terms of acid neutralizing capacity, specific surface area, and degree of magnetization. The composites also have better effects on treating acidic mine water and mine water-contaminated soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Sharad V. Patil, Bhaskar N. Thorat
Summary: This paper reviews various methods for filtration and dewatering of red mud, including rotary drum vacuum filters, membrane filter press, and HiBar steam filtration. Red mud cake with high solids content has several benefits, such as long-term storage and utilization for the recovery of valuable metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Hugo Lucas, Srecko Stopic, Buhle Xakalashe, Sehliselo Ndlovu, Bernd Friedrich
Summary: By using red mud to treat acidic mine drainage solutions, harmful chemical elements were successfully neutralized and immobilized. Apart from sulfur and chromium, which are mainly present in red mud, heavy metals and other hazardous elements were immobilized in the mineral phase.
Article
Engineering, Environmental
Xue Zhang, Rong Huang, Yijun Cao, Chongqing Wang
Summary: The innovative strategy of rapid conversion of red mud into soil matrix by cohydrothermal carbonization effectively neutralizes the alkalinity, improves soil properties, and verifies the feasibility and practicality of the process, promoting future application of phytoremediation of red mud at full field scale.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Xianshang Bai, Jianwei Lin, Zhibin Zhang, Yanhui Zhan
Summary: The study aimed to investigate the immobilization effect of lead, copper, cadmium, nickel, and zinc in sediment by red mud. Results showed that red mud had high adsorption capacities for these metals and could effectively reduce their leachable concentrations in sediment by converting exchangeable and reducible fractions into residual fractions. The linear relationship between the red mud dosage and the quantities of immobilized metals can be used to determine the required dosage for immobilization.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Xian Zhou, Xia Chen, Wei Han, Yi Han, Mengxin Guo, Ziling Peng, Zeyu Fan, Yan Shi, Sha Wan
Summary: In this study, the effects of red mud and steel slag on the dewaterability of sludge and the adsorption capacity of sludge-derived biochar were investigated. The results showed that red mud and steel slag improved the dewatering performance of sludge and induced the formation of biochar containing FeAl2O4. The biochar exhibited a large surface area and high pollutant removal capacity.
Article
Chemistry, Multidisciplinary
Wei Zhang, Jie Kong, Yingwei Li, Zhuoran Kuang, He Wang, Meng Zhou
Summary: The coherent vibrational dynamics of gold nanoclusters provide important information on the coupling between vibrations and electrons as well as their mechanical properties. The study focuses on atomically precise Au-144(SR)(60) nanoclusters and reveals distinct vibrational modes at 1.5 THz and 2 THz, which help understand the physical properties of gold nanostructures between molecular-like nanoclusters and metallic-state nanoparticles.
Article
Construction & Building Technology
Di Wu, Qingqing Xu, Dongshuai Hou, Rui Yu, Muhan Wang, Yaguang Zhu, Yue Zhang, Shiyu Sui, Minghui Zhang, Qiulei Song, Xinpeng Wang
Summary: This study proposed an encapsulation-based strategy using ultra-high performance concrete (UHPC) as an encapsulating material for the safe management of red mud (RM). Density functional theory (DFT) calculations were used to investigate the selective chemisorption mechanism of the encapsulated material. The results showed that different bonding forms led to the selective chemisorption of heavy metals, and the encapsulated RM exhibited exceptionally low concentrations of hazardous components, far below the limits set by the United States Environmental Protection Agency (EPA).
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Chemistry, Multidisciplinary
Bojana M. Ekmescic, Danijela D. Maksin, Jelena P. Markovic, Zorica M. Vukovic, Radmila V. Hercigonja, Aleksandra B. Nastasovic, Antonije E. Onjia
ARABIAN JOURNAL OF CHEMISTRY
(2019)
Article
Engineering, Environmental
Ivana D. Smiciklas, Vesna M. Lazic, Ljiljana S. Zivkovic, Slavica J. Porobic, S. Phillip Ahrenkiel, Jovan M. Nedeljkovic
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2019)
Article
Environmental Sciences
Jelena Markovic, Mihajlo Jovic, Ivana Smiciklas, Marija Sljivic-Ivanovic, Antonije Onjia, Katarina Trivunac, Aleksandar Popovic
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2019)
Article
Soil Science
Marija Egeric, Ivana Smiciklas, Biljana Dojcinovic, Biljana Sikiric, Mihajlo Jovic, Marija Sljivic-Ivanovic, Dragan Cakmak
Article
Environmental Sciences
Ivana Jelic, Marija Sljivic-Ivanovic, Slavko Dimovic, Dragi Antonijevic, Mihajlo Jovic, Zoran Vujovic, Ivana Smiciklas
WATER AIR AND SOIL POLLUTION
(2019)
Article
Thermodynamics
Bojan Jankovic, Ivana Smiciklas, Nebojsa Manic, Ana Mrakovic, Milica Mandic, Dorde Veljovic, Mihajlo Jovic
THERMOCHIMICA ACTA
(2020)
Article
Multidisciplinary Sciences
Ivana Smiciklas, Ivana Coha, Mihajlo Jovic, Marijana Nodilo, Marija Sljivic-Ivanovic, Slavko Smiljanic, Zeljko Grahek
Summary: This study investigated the removal of Sr radionuclides using the zeolite Z4A produced from the Bayer process liquids, showing fast and efficient removal with high sorption capacity. The selectivity of Z4A decreased in the order Sr>Ca>K>Mg>Na, and Z4A exhibited high stability in retaining radionuclides, making it a cost-effective and selective medium for Sr removal, especially in high salinity effluents.
SCIENTIFIC REPORTS
(2021)
Article
Thermodynamics
Bojan Jankovic, Nebojsa Manic, Mihajlo Jovic, Ivana Smiciklas
Summary: The study found that the degradation of investigated shells is significantly influenced by powder particle size and heating rate, which affect the release of CO2. Additionally, different types of shells exhibit distinct mechanisms during calcination, leading to varying CO2 concentrations that impact temperature and activation energy.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Biochemistry & Molecular Biology
Vesna Lazic, Andrea Pirkovic, Dusan Sredojevic, Jelena Markovic, Jelena Papan, S. Phillip Ahrenkiel, Ivona Jankovic-Castvan, Dragana Dekanski, Milica Jovanovic-Krivokuca, Jovan M. Nedeljkovic
Summary: The study found that ZrO2 NPs and CA are non-toxic to four different cell lines within a certain concentration range, and ZrO2 NPs can promote the proliferation of certain cells. However, hybrid ZrO2/CA NPs exhibit higher toxicity to JEG-3 cells.
CHEMICO-BIOLOGICAL INTERACTIONS
(2021)
Article
Environmental Sciences
Ivana Smiciklas, Mihajlo Jovic, Marija Jankovic, Slavko Smiljanic, Antonije Onjia
Summary: The study compared the AMD neutralization and metal removal potential of fresh and aged RM, finding that the fresh RM had slightly better performance. Investigated toxic elements from neutralization residues complied with waste standards while also being influenced by the stability of toxic elements in the environment.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Environmental Sciences
Milos Manic, Milan Dordevic, Mrdan Dokic, Ranko Dragovic, Dusan Kicovic, Dejan Dordevic, Mihajlo Jovic, Ivana Smiciklas, Snezana Dragovic
Summary: This study examines erosion processes and their impacts on forest management in the hilly terrains of the Crveni potok catchment in southeastern Serbia. The study identifies different erosion types and discusses the factors influencing erosion, such as soil density, slope, rainfall, and vegetation characteristics. Various remote sensing and geospatial techniques are used to assess erosion factors, and conversion models are used to estimate soil erosion rates. The study provides valuable insights into prioritizing soil conservation and implementing site-specific remediation measures for sustainable forest management.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Analytical
Ivana Coha, Ivana Smiciklas, Ivana Tucakovic, Mihajlo Jovic, Marija Sljivic-Ivanovic, Zeljko Grahek
Summary: A novel method for rapid determination of Sr-89 and Sr-90 in seawater samples is developed. Synthetic zeolite Z4A and a highly selective material for Sr separation are used to achieve fast preconcentration and high recovery of Sr in seawater, thereby lowering the detection limits.
Article
Environmental Sciences
Milica Lucic, Milan Momcilovic, Jelena Markovic, Mihajlo Jovic, Ivana Smiciklas, Antonije Onjia
Summary: The concentrations of cadmium (Cd), lead (Pb), and nickel (Ni) in regular and slim cigarette brands in the Serbian market were analyzed, and their human health risks were evaluated. The metal concentrations varied between cigarette brands, with higher levels in regular cigarettes but higher concentrations per cigarette tobacco mass in slim cigarettes. Counterfeit cigarettes had slightly higher metal concentrations than authentic brands. Lead was found to be the most abundant toxic metal, followed by nickel and cadmium. The calculated cumulative hazard index (HI) and incremental lifetime cancer risk (ILCR) indicated a low noncarcinogenic risk and a low but not negligible carcinogenic risk from Cd, Pb, and Ni. The probabilistic and deterministic approaches yielded similar results for the mean HI and ILCR values. A Monte Carlo simulation was used to reduce the uncertainty of health risk estimation, and sensitivity analysis showed that cigarette mass was the most influential factor, followed by Cd content.
TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Snezana Dragovic, Ivana Smiciklas, Mihajlo Jovic, Aleksandar Cupic, Ranko Dragovic, Bosko Gajic, Antonije Onjia
Summary: Despite the practical approach for characterizing the environmental risk of potentially toxic elements (PTEs) from steel production, the analysis of bioavailable PTEs concentrations in soil is often overlooked in managing polluted sites. This study investigated the DTPA-extractable forms of PTEs in soils near a major Serbian steel production plant, revealing significant variability and suggesting an anthropogenic origin. Self-organizing maps (SOMs), principal component analysis (PCA), and positive matrix factorization (PMF) further confirmed the common origin and provided a basis for comprehensive assessment and soil remediation.
Article
Materials Science, Multidisciplinary
Ivana Smiciklas, Bojan Jankovic, Mihajlo Jovic, Jelena Maletaskic, Nebojsa Manic, Snezana Dragovic
Summary: Developing efficient methods for Mn separation is the most challenging task in exploring innovative and sustainable acid mine drainage treatments. This study investigated the influence of AMD chemistry, solid/solution ratio, and contact time on Mn separation by wood ash and bone char, and found the optimal treatment conditions.