Article
Environmental Sciences
Yunhao Tian, Nan Jia, Liang Zhou, Juying Lei, Lingzhi Wang, Jinlong Zhang, Yongdi Liu
Summary: The study compared the degradation rates of Fe2+/PMS, Fe2+/H2O2, and Fe2+/PDS processes, and enhanced degradation efficiency by adding visible light irradiation and inverse opal WO3 co-catalyst.
Article
Environmental Sciences
Chuang Wang, Jinying Du, Xiaoyong Deng, Rui Chen, Zhiwei Zhao, Wenxin Shi, Fuyi Cui
Summary: This study systematically investigated the removal of fluoroquinolones (NOR) in VUV/Fe3+/H2O2 process, demonstrating its efficiency in increasing degradation rate and mineralization rate while reducing energy consumption and economic cost.
Article
Engineering, Environmental
Yong Chen, Yuangang Li, Ningdan Luo, Weike Shang, Shaosen Shi, Huajing Li, Yaodong Liang, Anning Zhou
Summary: The study developed a H2O2-free photo-Fenton process using BiVO4 as a semiconductor and Fe3+ as an additive to effectively degrade antibiotics. Comparisons between H2O2-free photo-Fenton and photocatalytic reactions showed the former had higher degradation rates under optimized conditions. The study deepened the understanding of mechanism and kinetics between photo-Fenton and photocatalytic reactions on the same catalyst, and highlighted the potential of H2O2-free photo-Fenton reactions on other semiconductors in treating wastewater with various antibiotics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Abel Riaza-Frutos, Agata Egea-Corbacho, Manuel A. Manzano, Jose Maria Quiroga
Summary: In today's industries, there is a need to degrade non-biodegradable compounds before their discharge into the environment. This study focused on the degradation of Orange II, a widely-used azo-dye. The photo-Fenton process was used to study the degradation under different conditions, and it was observed that homogeneous catalysis provided better results in primary degradation and mineralization compared to heterogeneous catalysis.
Article
Engineering, Environmental
Chuang Wang, Jing Zhang, Jinying Du, Pengfei Zhang, Zhiwei Zhao, Wenxin Shi, Fuyi Cui
Summary: The VUV/Fe2+/H2O2 synthesis system is able to rapidly and efficiently remove norfloxacin, effectively degrade organic pollutants in wastewater, reduce the residual amount of H2O2, and save overall costs. Furthermore, the significant synergistic effect within this system accelerates the treatment of wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Yunhao Tian, Yizhou Wu, Qiuying Yi, Liang Zhou, Juying Lei, Lingzhi Wang, Mingyang Xing, Yongdi Liu, Jinlong Zhang
Summary: In this study, an inverse opal WO3 (IO WO3) co-catalytic photo-Fenton-like system was designed to efficiently degrade RhB within 6 minutes. The high-efficiency photogenerated long lifetime charge carriers produced by IO WO3 cocatalyst can directly convert SO4.(-) and .O-2(-) to O-1(2) without .OH intermediate in the solution. The addition of IO WO3 cocatalyst also enhances the reduction of Fe3+/Fe2+ ions and improves mass transfer and light harvest efficiency.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xin Qin, Kaixuan Wang, Peike Cao, Yan Su, Shuo Chen, Hongtao Yu, Xie Quan
Summary: Electro-Fenton (e-Fenton) is a promising method for wastewater treatment by generating powerful .OH through the decomposition of electro-generated H2O2 catalyzed by Fe2+. However, developing a catalyst capable of simultaneously producing H2O2 and accelerating Fe2+ regeneration remains a challenge. In this study, a hollow porous carbon sphere catalyst (HPCS) was developed to enhance H2O2 generation and Fe3+/Fe2+ cycling by constructing an electron-rich microenvironment via surface curvature regulation. The HPCS-TPOS catalyst with a larger curvature structure showed higher Fe2+ regeneration efficiency (35.5%) compared to the HPCS-S catalyst (22.8%). The HPCS-TPOS also exhibited a higher H2O2 production rate (47.2 mmol L-1 h-1) surpassing state-of-the-art e-Fenton catalysts. These findings provide new insights into the design of efficient catalysts for wastewater treatment by regulating curvature structures.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Yijia Lin, Youzhi Dai, Li Zhang, Qian Wu
Summary: This study proposes a synergistic degradation method using calcium peroxide (CaO2) in Fenton oxidation for the treatment of phenol in water, which overcomes the disadvantages of traditional Fenton treatment. The system shows good degradation efficiency on phenol over a wide pH range, and the addition of CaO2 enhances the utilization of iron ions and H2O2.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Physical
Yufeng Zhu, Shouchun Ma, Yang Yang, Jiaqi Li, Yuqing Mei, Li Liu, Tongjie Yao, Jie Wu
Summary: The study established a Z-scheme electron transfer pathway by preparing Fe2(MoO4)3/MoO3 heterojunction, and achieved a synergistic effect between heterogeneous Fenton reaction and photocatalytic reaction by utilizing H2O2 as a medium, leading to enhanced degradation efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Applied
Bolun Yu, Jingjing Yao, Haipu Li, Hui Ying Yang
Summary: The Fe2+-activated persulfate and H2O2 system showed efficient removal of mixed sulfonamides under a wide pH and temperature range. The coexistence of sulfate radicals and hydroxyl radicals in the system played a crucial role in the elimination of sulfonamides. The reaction rate constants of the radicals at different reactive sites explained the varying removal ratios of different sulfonamides.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Yanmei Li, Jing Wang, Ziyang Xiang, Junhui Yang, Jinglin Yin, Xin Guo, Wenlei Wang
Summary: In this study, a carbonized aerogel decorated with Mn-FeOOH hybrid nanoparticles was prepared and used as a heterogeneous photo-Fenton catalyst. The Mn doping accelerated the regeneration of Fe2+ and promoted the decomposition of H2O2, leading to the production of hydroxyl radicals. The catalyst showed high efficiency and durability in degrading As(III) and has potential application in treating arsenic pollution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Review
Chemistry, Physical
Qi Wang, Liping Ren, Jie Zhang, Xin Chen, Chunying Chen, Fei Zhang, Shuai Wang, Jie Chen, Jinjia Wei
Summary: This review comprehensively summarizes and discusses the mechanism, (photo)electrocatalysts, and (photo)electrochemical devices for (photo)electrochemical H2O2 production. The pros and cons of different types of device designs are discussed, and future research directions are provided.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Chuanlei Li, Xiaonan Tan, Jiahai Ma
Summary: Photocatalytic oxidation technology can oxidize organic pollutants into small-molecule inorganic substances by producing radicals, holes, and hydrogen peroxide. Controlling the morphology of semiconductor photocatalysts during formation processes is crucial for enhancing photocatalytic activity. The synergistic contributions of large specific surface area and good optical capability play a key role in superior pollutant degradation during photocatalysis and Photo-Fenton reaction.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Engineering, Chemical
Dongliang Wang, Yuxiao Li, Shaogang Hu, Jingping Hu, Huijie Hou, Bingchuan Liu, Han Zheng, Xi Luo, Haixiao Li
Summary: This research designed a triple-cathode EF system for efficient degradation of recalcitrant organic pollutants. The system exhibited improved removal rate with low electricity consumption and reduced Fe2+ dosage. This work demonstrates a novel and cost-effective approach for efficient EF.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Yang Yang, Wenqing Zhen, Tingting Zhao, Maoquan Wu, Shouchun Ma, Liyan Zhao, Jie Wu, Li Liu, Jiaxu Zhang, Tongjie Yao
Summary: In this study, Fe atoms doped MoS2 (Fe-MoS2) was prepared, which significantly accelerated the rate of Fe3+ reduction and achieved nearly 100% H2O2 utilization efficiency. Fe-MoS2 effectively activated 90% of H2O2 to ·OH, leading to a 5.8 and 4.2 times higher tetracycline degradation rate compared to MoS2 and Fe-MoS2-Hyd. Additionally, Fe-MoS2 showed a pH-universal catalytic activity (pH = 2.6-14.0), addressing the limited working range of other catalysts and improving environmental adaptability.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Barbara R. Gonsalves, Alexandre Della-Flora, Carla Sirtori, Raquel M. F. Sousa, Maria Clara V. M. Starling, Jose Antonio Sanchez Perez, Enrico M. Saggioro, Sidney F. Sales Jr, Alam G. Trovo
Summary: Coupling UV-C irradiation with different peroxides shows potential for degrading persistent organic compounds, but a comprehensive comparison of the performance of various UV-C/peroxide processes is lacking. In this study, the effectiveness of different UV-C/peroxide processes was evaluated using the herbicide tebuthiuron as a model pollutant. The results highlight the importance of comparing degradation and toxicity effects of different peroxides and matrices.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Heba Saed Kariem Alawamleh, Seyedsahand Mousavi, Danial Ashoori, Hayder Mahmood Salman, Sasan Zahmatkesh, Mika Sillanpaa
Summary: The study aims to improve the performance of membrane treatment for oily wastewater. The effects of pre-treatment, membrane modification, and operational parameters on the microfiltration membrane system were investigated. The results showed that using PFS as a coagulant at pH=6 can achieve a COD reduction of 98%, while using PFC at the same conditions only removes 81% of COD.
Article
Biochemistry & Molecular Biology
Muhammad Pervaiz, Muti Ur Rehman, Faisal Ali, Umer Younas, Mika Sillanpaa, Rizwan Kausar, Asma A. Alothman, Mohamed Ouladsmane, Mohammad Abdul Mazid
Summary: Cellulose/MoS2/GO nanocomposite was synthesized using a hydrothermal method. The formation of the nanocomposite was confirmed by UV-visible and FTIR spectroscopy, and its particle size and morphology were characterized. The nanocomposite exhibited promising biomolecule protective and photocatalytic potential, making it suitable for environmental remediation.
BIOINORGANIC CHEMISTRY AND APPLICATIONS
(2023)
Article
Thermodynamics
Yiran Yang, Gang Li, Tao Luo, Mohammed Al-Bahrani, Essam A. Al-Ammar, Mika Sillanpaa, Shafaqat Ali, Xiujuan Leng
Summary: This study aims to predict building energy consumption by using neural networks such as support vector machine, gated recurrent unit, extreme learning machine, long short-term memory, and shuffled frog leaping algorithm as an optimizer. Statistical results indicate that long short-term memory and support vector machine are the best neural networks for cooling and heating load forecast, respectively.
Article
Engineering, Environmental
Mohua Li, Liang Bai, Shengtao Jiang, Mika Sillanpaa, Yingping Huang, Yanbiao Liu
Summary: Selective electrochemical reduction of oxygen (O-2) via 3e(-) pathway to produce hydroxyl radicals (HO) is a promising alternative to conventional electro-Fenton processes. A nitrogen-doped CNT-encapsulated Ni nanoparticle electrocatalyst (Ni@N-CNT) was developed, which exhibited high selectivity towards O-2 reduction and generation of HO•via 3e(-) pathway. The exposed graphitized N on the CNT shell and Ni nanoparticles encapsulated within the tip of the N-CNT played crucial roles in the generation of *HOOH through a 2e(-) oxygen reduction reaction. The encapsulated Ni nanoparticles at the tip of the N-CNT also facilitated the direct decomposition of electrogenerated *H2O2, leading to sequential generation of HO• through a 1e(-) reduction reaction on the N-CNT shell without inducing Fenton reaction. Improved bisphenol A (BPA) degradation efficiency was observed compared to conventional batch systems (97.5% vs 66.4%). Trials using Ni@N-CNT in a flow-through configuration demonstrated complete removal of BPA within 30 minutes (k = 0.12 min(-1)) with a limited energy consumption of 0.068 kW.h.g(-1) TOC.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Atef El Jery, Hayder Mahmood Salman, Rusul Mohammed Al-Khafaji, Maadh Fawzi Nassar, Mika Sillanpaa
Summary: Hydrogen production using polymer membrane electrolyzers is an effective method for generating environmentally friendly energy. The study analyzed the performance of the electrolyzers in the water electrolysis process and investigated the impact of variables such as radiation intensity and current density on hydrogen production. Machine-learning-based predictions were also conducted to forecast efficiency and hydrogen production rate in different scenarios.
Article
Horticulture
Mervat A. Ali, Samir G. Farag, Mika Sillanpaa, Saleh Al-Farraj, Mohamed E. A. El-Sayed
Summary: The addition of superabsorbent polymers (SAPs) to soil improves soil properties and increases plant yields. The goal of the study was to investigate the effectiveness of SAPs in reducing mineral fertilizer usage and producing high-quality grapes. The study was conducted in a private vineyard in Egypt over three seasons and found that increasing the amount of applied polymer significantly enhanced bud burst, growth parameters, nutrient content, and yield.
Review
Engineering, Environmental
Thuhin Kumar Dey, Jingwei Hou, Mika Sillanpaa, Biplob Kumar Pramanik
Summary: Micro/nanoplastics (MPs/NPs) are widespread and pose a significant threat to the environment. Metal-organic frameworks (MOFs)-based membranes have gained attention for their potential in removing MPs/NPs from water and wastewater. However, challenges such as re-aggregation, cross-contamination, and poor structural stability need to be addressed for the successful application of MOF membranes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Abir Melliti, Murat Yilmaz, Mika Sillanpaa, Bechir Hamrouni, Radek Vurm
Summary: In this study, low-cost activated carbon (AC-DPF) made from date palm fiber waste was used to remove lead and copper from water systems. AC-DPF had a large surface area and high adsorption capacity, with removal efficiencies of 92% for Pb(II) and 80% for Cu(II). The adsorption kinetics and thermodynamics of AC-DPF were investigated, and competitive and antagonistic effects were observed in the multicomponent system. Overall, AC-DPF showed great potential as a highly promising, effective, and feasible adsorbent for heavy metal removal.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Analytical
Shilpi Verma, Mamleshwar Kumar, Ramanpreet Kaur, Praveen Kumar, Mika Sillanpaa, Urska Lavrencic Stangar
Summary: This study analyzed the combustion and pyrolysis behaviors of PTA wastewater sludge and observed reaction orders, exothermic reactions, and auto gasification. The sludges were found to be promising for energy recovery due to their high calorific values. The experimental results were successfully validated using an artificial neural network model.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Engineering, Environmental
Jingyao Zhang, Jiadong Liu, Bo Gao, Mika Sillanpaa, Jin Han
Summary: This study utilized biochar produced from dehydrated excess sludge to catalytically ozonate pollutants from landfill leachate. The biochar contained necessary catalytic sites originating from inorganic metals and organic matters in the sludge. These sites promoted the generation of reactive oxygen species and the removal rates of pollutants were enhanced by the synergistic interaction between microorganisms. The study provides insight into the mechanism of catalytic ozonation and offers a new approach for practical landfill leachate treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Imran Ali, Yu Pakharukov, F. K. Shabiev, E. Galunin, R. F. Safargaliev, S. A. Vasiljev, B. S. Ezdin, A. E. Burakov, Zeid A. Alothman, Mika Sillanpaa
Summary: In this study, graphene-based nanofluids were synthesized and their viscosities were determined. The molecular interactions of graphene nanoparticles were theoretically analyzed to understand the mechanisms affecting the viscosity of nanofluids. An analytical function describing the dependence of the relative viscosity on the concentration of graphene nanoparticles was obtained based on experimental results. It was found that the viscosity of the nanofluid was influenced by the structure of the graphene sheets, and the self-assembly of the nanoparticles played a crucial role in the viscosity changes.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Anasheh Mardiroosi, Ali Reza Mahjoub, Amir Hossein Cheshme Khavar, Rabah Boukherroub, Mika Sillanpaeae, Parminder Kaur
Summary: This study synthesizes a variety of perovskite-type titanates (MTiO3, M = Zn, and Mn) and loads them onto functionalized magnetic graphene oxide (EDFG) to produce MTiO3 @EDFG nanocomposites. The materials were fully characterized, and the MTiO3 @EDFG nanocomposites were found to exhibit enhanced photocatalytic activity for the degradation of Rhodamine B under visible light irradiation. The enhanced activity was attributed to the inhibition of nanoparticle aggregation, improved electron transfer, increased surface area, and extended absorption range.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Review
Engineering, Civil
B. K. Pandey, C. Shukla, M. Sillanpaeae, S. K. Shukla
Summary: The aim of this study was to evaluate the global research trends in the application of electrokinetics in soil stabilization and remediation. A total of 1562 articles published from 1960 to 2022 were analyzed using the Scopus database. The results show that publication output has significantly increased in the last 5 years, with China, USA, Spain, and South Korea being the top contributing countries.
INNOVATIVE INFRASTRUCTURE SOLUTIONS
(2023)
Article
Engineering, Chemical
Shabnam Ahmadi, Soumya Ghosh, Alhadji Malloum, Mika Sillanpaa, Chinenye Adaobi Igwegbe, Prosper E. Ovuoraye, Joshua O. Ighalo
Summary: Molecular modelling and simulation were used to investigate the removal of amoxicillin (AMX) from water using iron nanoparticles (Fe3O4-NPs). The optimal conditions for adsorption were determined. The results showed that AMX molecules have high chemical potential and electrophilicity index, making them reactive. The adsorption of AMX onto Fe3O4-NPs was highly efficient under optimal conditions of pH 3, dosage of 0.5 g/L, AMX concentration of 60 mg/L, and a contact time of 60 min. Langmuir isotherm and pseudo-second-order kinetics provided the best fit to the adsorption data.
INDIAN CHEMICAL ENGINEER
(2023)
