Article
Environmental Sciences
Arif Nawaz, Adnan Khan, Nisar Ali, Ping Mao, Xiaoyan Gao, Nauman Ali, Muhammad Bilal, Hammad Khan
Summary: The ternary ferrites-based visible light photocatalyst Fe2Zn0.5Cu0.5O4-CM (CZF-CM) prepared by co-precipitation method showed high efficiency in degrading dye-loaded wastewater. Analysis of the nanoparticles' crystallite size, elemental composition and morphology indicated their effectiveness in environmental remediation. The study also compared the photocatalytic efficiency of ternary ferrites with binary ferrites, highlighting the superior performance of the former in wastewater treatment processes.
Article
Engineering, Chemical
Yang Yang, Xue Yao, Shuhui Wu, Xiao Wang, Lei Feng, Xuedong Feng, Yanfei Ma
Summary: This study presented an innovative utilization of micro-nano bubble aeration technology to improve the treatment of Rhodamine B through heat-activated persulfate oxidation. Through systematic experiments, the impacts of different factors on the degradation of Rhodamine B were explored, and an optimal removal rate of 94.53% was achieved. The properties of micro-nano bubbles and their synergistic coefficient were investigated, revealing the predominance of sulfate radicals and facilitating an in-depth understanding of the reaction mechanism.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Koki Kodama, Mako Oiwa, Tohru Saitoh
Summary: A simple and rapid method was developed for the purification of the basic dye Rhodamine B using air bubble flotation. By enriching the RB into foam on the water surface within 3 minutes, impurities remained in the bulk aqueous solution. The purified RB was successfully obtained by 3-fold air bubble flotation.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Physical
Mohammed T. Alotaibi, Roaa T. Mogharbel, Ali Q. Alorabi, Nasser A. Alamrani, Ahmed Shahat, Nashwa M. El-Metwaly
Summary: A direct synthesis method was used to create an ordered mesocage cubic Pm3n aluminosilica nanoadsorbent with mesopores and a monolith-like shape, which successfully removed Rhodamine B from wastewater. The multi-directional pores, mesostructural geometries, and Bronsted acid sites of the nanoadsorbent were crucial in enhancing the adsorption efficiency. The characterization of the composite was carried out via various techniques.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Environmental
Driss Mazkad, Nour-eddine Lazar, Abdellah Benzaouak, Ali Moussadik, Mohamed El Habib Hitar, Noureddine Touach, Mohammed El Mahi, El Mostapha Lotfi
Summary: In this study, the photocatalytic performances of Sm-doped LiNbO3 and undoped LiNbO3 were investigated for Rhodamine photodegradation. The materials were synthesized using the solid-state reaction method and characterized by XRD, SEM-EDS, Raman, and UV-visible DRS. The results showed that 1% Sm-LNO exhibited the highest photocatalytic activity (94% within 80 min) and higher stability and recyclability after 4 cycles. A possible photodegradation mechanism of Rhodamine B dye during the photocatalytic process was proposed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Xiao Zhang, Jiankang Wang, Zhongping Yao, Changju Chen, Yang Zhou, Zhaohua Jiang
Summary: In this study, a highly efficient SO42--Fe3O4/FeS-immobilized ceramic coating was successfully prepared as a Fenton-like catalyst for phenol degradation via the PEO technique. The coating exhibited excellent stability and remarkable phenol removal efficiency under neutral conditions. The introduction of SO42- and the rapid transformation from Fe-III to Fe-II were identified as key factors contributing to the enhanced Fenton-like performance of the coating.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
S. P. Keerthana, R. Yuvakkumar, P. Senthil Kumar, G. Ravi, S. Hong, Dhayalan Velauthapillai
Summary: In this study, polyethylene glycol-assisted antimony tungstate nanorod photocatalysts were prepared via a hydrothermal route. The properties of the catalysts were investigated, and it was found that the 10 ml PEG-assisted sample exhibited a narrow bandgap and nanorod growth without agglomeration. Fourier transform infrared spectroscopy and Raman spectroscopy confirmed the composition and vibrational modes of the samples. Furthermore, the prepared 10 ml PEG-Sb2WO6 photocatalyst showed high efficiency and stability in degrading toxic pollutants in wastewater, making it a promising candidate for water treatment applications.
Article
Engineering, Environmental
Lijie Zhao, Shuo Wang, Jianxin Wang, Haixia Yu, Chunyan Zhao, Lu Meng
Summary: In this study, a [P(W3O10)(4)](3-)g-C3N4 composite catalyst was prepared and showed efficient photocatalytic removal of Rhodamine B (RhB) organic wastewater. The [P(W3O10)(4)]-g-C3N4 catalyst exhibited higher degradation efficiency compared to g-C3N4, and the corresponding active species were proposed. Additionally, the catalyst demonstrated unique dye detection properties.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Salma Jabeen, Muhammad Sufaid Khan, Rozina Khattak, Ivar Zekker, Juris Burlakovs, Sergio S. dC Rubin, Makarand Madhao Ghangrekar, Anna Kallistova, Nikolai Pimenov, Muhammad Zahoor, Gul Shahzada Khan
Summary: Pd/ZrO2 exhibited good catalytic activity and stability in the degradation of dyes, with thermodynamic parameters indicating the exothermic and spontaneous nature of the reaction. The catalyst showed suitable affinity for dye degradation, making it a promising candidate for further validation and application in various dye removal processes.
Article
Multidisciplinary Sciences
Salma Jabeen, Sultan Alam, Luqman Ali Shah, Muhammad Zahoor, Muhammad Naveed Umar, Riaz Ullah
Summary: Treatment of textile effluent is important due to the presence of harmful and non-biodegradable dyes. Biosorption using hydrogel sorbents is a green and effective method. In this study, a novel hydrogel was synthesized and characterized. The hydrogel showed high adsorption capacity and swelling behavior, with excellent sorption potential at pH 7. Thermodynamic analysis indicated an exothermic nature of the adsorption process. These findings provide valuable insights into the characteristics and applications of the synthesized hydrogel.
Article
Chemistry, Multidisciplinary
Fatmah Alkhatib, Saham F. Ibarhiam, Abdulmajeed F. Alrefaei, Salhah H. Alrefaee, Rami Pashameah, Turki M. Habeebullah, Salhah D. Al-Qahtani, Nashwa M. El-Metwaly
Summary: Eliminating pesticides is crucial for reducing environmental risks, and finding effective adsorbents is essential. Metal-organic frameworks (MOFs) have excellent adsorption capabilities and have been extensively studied for their ability to absorb pollutants. In this study, novel lanthanum metal-organic frameworks (La-MOFs) were used to remove deltamethrin (DEL) from water, and it was proven to be an efficient adsorbent with high surface area and pore volume.
Article
Chemistry, Multidisciplinary
Fatmah Alkhatib, Saham F. Ibarhiam, Abdulmajeed F. Alrefaei, Salhah H. Alrefaee, Rami Pashameah, Turki M. Habeebullah, Salhah D. Al-Qahtani, Nashwa M. El-Metwaly
Summary: Eliminating pesticides is crucial for reducing environmental hazards. Metal-organic frameworks (MOFs) have exceptional adsorption abilities and are recognized for absorbing pollutants efficiently. In our study, novel lanthanum metal-organic frameworks (La-MOFs) were used to remove deltamethrin (DEL) from water, and the La-MOF proved to be an efficient adsorbent for DEL. The synthetic La-MOF adsorbent has excellent cyclability and can be used for wastewater purification, industrial effluent management, and water filtration effectively.
Article
Chemistry, Physical
Ye Liang, Gege Huang, Qing Zhang, Yiting Yang, Jicheng Zhou, Jinjun Cai
Summary: Hydrothermal carbonization can convert bamboo shoot shells into hierarchical porous carbons, showing excellent adsorption capacity for dyes like Rhodamine B (RhB). The maximum adsorption capacity for RhB can reach up to 5398 mg/g due to the synergistic effects of porosity, pyrrolic-N configurations, and hierarchical structure.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Manjiri A. Mahadadalkar, NaHyun Park, Mohammad Yusuf, Saravanan Nagappan, Muthuchamy Nallal, Kang Hyun Park
Summary: Water pollution caused by industrial wastewater is a critical environmental problem. Synthetic dyes used in various industries have complex composition, high toxicity, and low biodegradability, causing negative impacts on ecosystems. To address this issue, TiO2 fibers photocatalyst doped with Fe was synthesized using sol-gel and electrospinning techniques for the degradation of dyes. The fabricated fibers showed excellent photocatalytic degradation activity, with 99% degradation of rhodamine B in 120 minutes. The fibers also demonstrated good photocatalytic activity even after 5 cycles of reuse.
Article
Engineering, Chemical
Charles Muzenda, Oluchi V. Nkwachukwu, Omotayo A. Arotiba
Summary: This study investigates the synthesis and application of ilmenite nanoparticles as a catalyst for the heterogeneous electro-Fenton degradation of tetracycline in water. The ilmenite nanoparticles were characterized and immobilized on a graphite felt cathode for the electro-Fenton reactions. The results show that ilmenite is an effective catalyst for the degradation of organic pollutants in water.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Analytical
Mohamed F. Attallah, K. F. Allan, Mamdoh R. Mahmoud
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2016)
Article
Chemistry, Analytical
Mohamed A. Soliman, Mamdoh R. Mahmoud, Azza H. Ali, Sameh H. Othman
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2016)
Article
Chemistry, Multidisciplinary
Mamdoh R. Mahmoud, Mohamed A. Soliman, Azza H. Ali, Sameh H. Othman
SEPARATION SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Chemical
Ghada M. Rashad, Mamdoh R. Mahmoud, Reda R. Sheha
PARTICULATE SCIENCE AND TECHNOLOGY
(2018)
Article
Chemistry, Inorganic & Nuclear
Amir Ezzat, Mamdoh R. Mahmoud, Mohamed A. Soliman, Ebtissam A. Saad, Abdelhakim Kandil
Article
Chemistry, Analytical
Ghada M. Rashad, Mohamed A. Soliman, Mamdoh R. Mahmoud
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2018)
Article
Chemistry, Inorganic & Nuclear
Mamdoh R. Mahmoud, Sameh H. Othman
Article
Chemistry, Multidisciplinary
Mamdoh R. Mahmoud, Mohamed A. Soliman, Ghada M. Rashad
SEPARATION SCIENCE AND TECHNOLOGY
(2019)
Article
Environmental Sciences
Mohamed A. Soliman, Ghada M. Rashad, Mamdoh R. Mahmoud
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Engineering, Chemical
Mohamed A. Soliman, Ghada M. Rashad, Mamdoh R. Mahmoud
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2019)
Article
Nuclear Science & Technology
Mamdoh R. Mahmoud, Ghada M. Rashad, Mohamed A. Soliman
PROGRESS IN NUCLEAR ENERGY
(2019)
Article
Chemistry, Physical
Mamdoh R. Mahmoud, Ghada M. Rashad, Ahmed M. Elewa, Essam Metwally, Ebtissam A. Saad
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Engineering, Environmental
Ghada M. Rashad, Mamdoh R. Mahmoud, Mohamed A. Soliman
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2019)
Article
Engineering, Environmental
Mamdoh R. Mahmoud, Mohamed A. Soliman, Ghada M. Rashad
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Chemistry, Physical
Mamdoh R. Mahmoud, Ghada M. Rashad, Essam Metwally, Ebtissam A. Saad, Ahmed M. Elewa
APPLIED CLAY SCIENCE
(2017)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.