Article
Environmental Sciences
Ben Yu, Ting Zhao, Williamson Gustave, Baochen Li, Yimin Cai, Da Ouyang, Ting Guo, Haibo Zhang
Summary: This study investigated the impact of microplastics and sulfamethoxazole on the adsorption behavior in the soil environment. The results showed that the dosage of microplastics affected the adsorption rate and capacity of sulfamethoxazole in soil particles. Environmental factors such as salinity and calcium ion concentration also influenced the adsorption behavior. Additionally, the addition of fulvic acid inhibited the adsorption of sulfamethoxazole.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
Huiting Chen, Martin Reinhard, Luhua You, Karina Yew-Hoong Gin
Summary: Understanding irreversible and reversible sorption in sediment is crucial for predicting the fate and transport of contaminants in surface waters. This study demonstrated the irreversible accumulation and reversible absorption of perfluoroalkyl acids in sediment from an urban water body. The results suggest that sediment can act as a sink for the studied contaminants and rubbery SOC may act as a concentration buffer. The S-D cycling can increase the irreversible absorption concentration, even at lower exposure concentrations, and the log KOC values of the sediment overlap with field data.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Engineering, Environmental
Xinru Liang, Lanlan Liu, Yufeng Jiang, Zhijiang Nan, Xueru Deng, Fengfeng Ma, Gang Wang, Yingqin Wu
Summary: This study investigated the sorption/desorption behavior of antibiotic Chlortetracycline (CTC) in sediments in the Lanzhou section of the Yellow River through batch equilibrium experiments. The results showed multilayer chemisorption, hysteresis phenomenon, and influences of temperature, CTC concentration, particle size, and pH on sorption behavior. The presence of other ions and physicochemical properties of sediments also affected the sorptive amount of antibiotics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Chao Yin, Chang-Gui Pan, Shao-Ke Xiao, Qi Wu, Hong-Ming Tan, Kefu Yu
Summary: This study investigated the sorption, sorption isotherms, and desorption behaviors of legacy and emerging PFASs onto marine sediments at different salinities. The results showed that the adsorption of PFASs onto sediment was influenced by compound and solution-specific parameters, and salinity had a significant impact on the fate of PFASs in aquatic environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Energy & Fuels
Hongbo Yao, Yuedu Chen, Weiguo Liang, Xiaoxia Song
Summary: The thermal effect of coal induced by supercritical CO2 adsorption and desorption was studied experimentally. It was found that CO2 adsorption and desorption increased and decreased the coal's temperature, respectively. The induced temperature variation depended on coal rank, CO2 pressure, and equilibrium temperature. The desorption hysteresis phenomenon was correlated with changes in the coal's functional groups, and the effect was weakened by increasing the equilibrium temperature.
Article
Environmental Sciences
Quang Tri Ho, Michael S. Bank, Atabak M. Azad, Bente M. Nilsen, Sylvia Frantzen, Stepan Boitsov, Amund Maage, Tanja Kogel, Monica Sanden, Livar Froyland, Rita Hannisdal, Helge Hove, Anne-Katrine Lundebye, Ole Jakob N. ostbakken, Lise Madsen
Summary: Marine fish from the Northeast Atlantic Ocean are rich in nutrients but also contain contaminants such as mercury and POPs. Concentrations of these contaminants increase from North to South and are associated with sediment contamination and sea temperature. Consuming seafood from the NEAO poses potential risks to human consumers.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Environmental Sciences
Hui Feng, Xin Xu, Peng Peng, Chenghao Yang, Hua Zou, Chen Chen, Yun Zhang
Summary: This study compared the sorption-desorption characteristics of epiandrosterone (EADR) and cortisol (CRL) in sewage sludge and aquatic sediment, and investigated their surface and molecular interactions. The results showed that the sorption capacities were higher in the sludge than in the sediment, and a smaller proportion of steroids could be desorbed from the sludge compared to the sediment. The organic content in the sludge and mineral content in the sediment might contribute to these differences.
ENVIRONMENTAL POLLUTION
(2023)
Article
Energy & Fuels
Sivachidambaram Sadasivam, Shakil Masum, Min Chen, Kamil Stanczyk, Hywel Thomas
Summary: This study explores the CO2 adsorption-desorption kinetics of bituminous coal under low pressure injection and compares different models to fit the data. The results suggest that bulk pore diffusion, surface interaction, and multilayer adsorption are the rate-determining steps.
Article
Materials Science, Characterization & Testing
Christian Pichler, Stefan Oberparleiter, Roman Lackner
Summary: In this paper, dynamic vapor sorption (DVS) experiments were conducted on thermoplastic polyurethane (TPU) samples. The experiments revealed that the sorption isotherm of TPU has almost no temperature dependency. The diffusion coefficients obtained from the experiments show dependency on temperature and relative humidity range.
Review
Environmental Sciences
Omowumi D. Agboola, Nsikak U. Benson
Summary: Microplastics act as sources and vectors of organic contaminants in the environment, raising concerns for potential harmful impacts on the environment, biota, and human health. Microplastic particles exhibit a higher affinity for hydrophobic organic contaminants underwater. However, the concentrations of organic contaminants adsorbed on microplastic surfaces and their distribution are greatly influenced by environmental factors and physicochemical properties in aquatic environments.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Environmental Sciences
Alison M. Franklin, Clinton Williams, Danielle M. Andrews, John E. Watson
Summary: Due to antibiotic resistance, it is important to understand the behavior of antibiotics in soil systems to assess potential risks to human and animal health. This study examined the sorption and desorption behaviors of four commonly found antibiotics in soils under typical conditions. The results showed variations in sorption capacity and mobility among different antibiotics.
Article
Construction & Building Technology
Christian Pichler, Roman Lackner, Tobias Bader, Lukas Perfler
Summary: This paper presents experimental characterization of sorption isotherm of Obernkirchener sandstone samples using dynamic vapor sorption experiments. The diffusion coefficient of the porous material is estimated and its influence on mass transfer is analyzed.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Energy & Fuels
Wenfeng Guang, Xiaoqian Liu, Zhenyu Zhang, Peng Luo
Summary: The diffusion mechanism of CH4 and CO2 on the coal matrix is important for enhanced coal seam gas recovery and CO2 sequestration. Different-phase CO2 has different effects on gas mass transfer and surface thermodynamics in the coal matrix.
Article
Engineering, Environmental
Jie Ding, Qiancheng Xia, Lijun Li, Guandao Gao
Summary: In this study, an efficient and economical thermal-desorption strategy was developed using a three-dimensional carbon nanotubes (CNTs) film as the model adsorbent and employing the Joule heating method. The results showed that the desorption ratio of the target pollutant reached 93.2% with a low energy consumption, providing a green and energy-efficient approach for thermal regeneration.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Marina Burachevskaya, Tatiana Minkina, Tatiana Bauer, Ilya Lobzenko, Alexey Fedorenko, Mahmoud Mazarji, Svetlana Sushkova, Saglara Mandzhieva, Alexander Nazarenko, Vera Butova, Ming Hung Wong, Vishnu D. Rajput
Summary: To effectively remediate soil, it is important to use environmentally friendly and cost-effective technologies that align with the principles of green sustainable development. Biochar production and utilization have become widespread for recycling waste and preserving nutrients in the soil. This research examined the efficacy of using biochar made from wood, sunflower husks, and rice husks for soil remediation.
SCIENTIFIC REPORTS
(2023)
Article
Geochemistry & Geophysics
Mohamed Osman Awaleh, Farhan Bouraleh Hoch, Tiziano Boschetti, Youssouf Djibril Soubaneh, Nima Moussa Egueh, Sikie Abdillahi Elmi, Jalludin Mohamed, Mohamed Abdi Khaireh
JOURNAL OF GEOCHEMICAL EXPLORATION
(2015)
Article
Geochemistry & Geophysics
Mohamed Osman Awaleh, Paul Baudron, Youssouf Djibril Soubaneh, Tiziano Boschetti, Farhan Bouraleh Hoch, Nima Moussa Egueh, Jalludin Mohamed, Omar Assowe Dabar, Janie Masse-Dufresne, Jean Gassani
JOURNAL OF GEOCHEMICAL EXPLORATION
(2017)
Article
Geosciences, Multidisciplinary
Mohamed Osman Awaleh, Tiziano Boschetti, Youssouf Djibril Soubaneh, Paul Baudron, Ali Dirir Kawalieh, Omar Assowe Dabar, Moussa Mandi Ahmed, Samaleh Idriss Ahmed, Mohamed Ahmed Daoud, Nima Moussa Egueh, Jalludin Mohamed
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2017)
Article
Environmental Sciences
Moussa Mandi Ahmed, Pierre Doumenq, Mohamed Osman Awaleh, Agung Dhamar Syakti, Laurence Asia, Serge Chiron
MARINE POLLUTION BULLETIN
(2017)
Review
Environmental Sciences
Tiziano Boschetti, Mohamed Osman Awaleh, Maurizio Barbieri
Article
Thermodynamics
Omar Assowe Dabar, Mohamed Osman Awaleh, Daniel Kirk-Davidoff, Jon Olauson, Lennart Soder, Said Ismael Awaleh
Article
Energy & Fuels
Mohamed Osman Awaleh, Tiziano Boschetti, Abdillahi Elmi Adaneh, Mohamed Ahmed Daoud, Moussa Mahdi Ahmed, Omar Assowe Dabar, Youssouf Djibril Soubaneh, Ali Dirir Kawalieh, Ibrahim Houssein Kadieh
Article
Meteorology & Atmospheric Sciences
Omar Assowe Dabar, Pierre Camberlin, Benjamin Pohl, Moussa Mohamed Waberi, Mohamed Osman Awaleh, Sajed Silah-Eddine
Summary: This study investigates the spatial and temporal variability of rainfall in the Republic of Djibouti using data from 14 weather stations and high-resolution satellite rainfall products. It identifies two distinct regions of rainfall variability in the eastern and western parts of the country. ERA5, CHIRPS, and PERSIANN datasets are best able to reproduce rainfall patterns in Djibouti, making them suitable for further analysis.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Energy & Fuels
Mohamed Osman Awaleh, Abdi-Basid Adan, Omar Assowe Dabar, Mohamed Jalludin, Moussa Mahdi Ahmed, Ismael Abdillahi Guirreh
Summary: The Republic of Djibouti has unexplored potential in terms of renewable energy resources, particularly geothermal, wind, and solar energy. This study evaluates the economic feasibility of producing green hydrogen through water electrolysis using wind and geothermal energy in the Asal-Ghoubbet Rift (AG Rift) region. The findings indicate that wind energy is a more cost-effective option for producing electricity and green hydrogen compared to geothermal energy, with significant reductions in CO2 emissions.
Article
Environmental Sciences
Moussa Mahdi Ahmed, Mohamed Osman Awaleh, Martina Rozmaric, Oxana Blinova, Abdi-Basid Ibrahim Adan, Ismael Said Ismael, Mahamoud Ali Chirdon
Summary: The study evaluated the levels of Hg and Po-210 in commercially important fish species collected along the Djiboutian coast, revealing that the concentrations exceeded tolerable limits and posed a carcinogenic risk, particularly for children. Consumption of two servings per week was found to reduce the health impact.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Mohamed Osman Awaleh, Tiziano Boschetti, Abdillahi Elmi Adaneh, Mahamoud Ali Chirdon, Moussa Mahdi Ahmed, Omar Assowe Dabar, Youssouf Djibril Soubaneh, Nima Moussa Egueh, Ali Dirir Kawalieh, Ibrahim Houssein Kadieh, Mohamed Chaheire
Summary: The study reveals that the Ali-Sabieh aquifers in the East African Rift System are overexploited and contaminated with high concentrations of nitrate and sulfate, originating from anthropogenic activities and geological processes. The groundwater samples show a chemical evolution from fresh to brackish water mainly due to water-rock interaction.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geology
Laura M. DeMott, Christopher A. Scholz, Mohamed Osman Awaleh
Summary: Lake Abhe is known for its massive carbonate chimneys, which are morphologically characterized by crystalline trigonal prismatic and dendritic calcite crystals with unique microfabrics. The chimneys are interpreted to have formed from hydrothermal sublacustrine springs mixing with lake waters during highstand intervals, while stromatolitic crusts formed during lowstand lake levels, supported by their delta O-18 and delta(OB)-O-13 compositions. The age of chimney formation is not precisely constrained, but evidence suggests multiple formation events during Late Pleistocene and Holocene times.
SEDIMENTARY GEOLOGY
(2021)
Article
Energy & Fuels
Omar Assowe Dabar, Mohamed Osman Awaleh, Moussa Mohamed Waberi, Abdi-Basid Ibrahim Adan
Summary: The study evaluates the potential of wind energy for electricity and green hydrogen production in the Republic of Djibouti for the first time, showing promising prospects with competitive production costs. Various analysis methods, including sensitivity analysis and Monte Carlo simulation, were employed in the study.
Article
Geosciences, Multidisciplinary
N. Moussa, G. Bayon, V. Dekov, T. Yamanaka, R. Shinjo, T. Toki, B. Le Gall, N. Grassineau, J. A. Langlade, M. O. Awaleh, E. Pelleter
Summary: This study reports on the discovery of unusual hydrothermal mixed carbonate-siliceous chimneys in the Allols area, northwest of Lake Asal. These chimneys, up to 20 m high, were formed sub-aqueously and show evidence of mixing between magmatic and surficial waters. The study suggests that these chimneys were formed during major changes in lake water chemistry, reflecting contributions of mixing fluids and basalt alteration.
JOURNAL OF AFRICAN EARTH SCIENCES
(2023)
Article
Meteorology & Atmospheric Sciences
Omar Assowe Dabar, Abdi-Basid Ibrahim Adan, Moussa Mahdi Ahmed, Mohamed Osman Awaleh, Moussa Mohamed Waberi, Pierre Camberlin, Benjamin Pohl, Jalludin Mohamed
Summary: This study evaluates the occurrence, duration, and intensity of drought in the Republic of Djibouti. It finds that the drought incidence has increased in recent decades, with the eastern coastal region being the most affected. The western regions, on the other hand, have experienced a positive trend in their precipitation indices. The study also highlights the influence of large-scale climate variability in the Indo-Pacific region on drought in Djibouti.
