Article
Engineering, Environmental
Yulong Liu, Xianxian Sheng, Zhikang Zhou, Peng Wang, Zhanpeng Lu, Jiaqi Dong, Yong Sun, Shuguang Lyu
Summary: In this study, FeS2 was used as a catalyst to activate nano calcium peroxide (nCP) for the degradation of naphthalene (NAP). The results showed that the nCP/FeS2 system could efficiently degrade NAP under optimal conditions and could tolerate complex solution conditions. The main radical responsible for NAP degradation was identified. Gas chromatography-mass spectrometry (GC-MS) was used to detect NAP degradation intermediates and reveal the possible degradation pathways. The nCP/FeS2 system also showed broad-spectrum reactivity in the degradation of other organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Jong-Gook Kim, Hye-Bin Kim, Won-Gune Jeong, Kitae Baek
Summary: A novel oxidation system combining calcium peroxide and pyrite was proposed for the degradation of oxidizable contaminants in groundwater. This system showed higher efficiency in degrading sulfanilamide compared to conventional Fenton reaction, indicating its effectiveness in groundwater remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Environmental Sciences
Zhibo Liu, Xin Ren, Xiaoyue Duan, Ajit K. Sarmah, Xuesong Zhao
Summary: In recent years, highly toxic persistent organic pollutants (POPs) have been widely detected in the environment. The persulfate-oxidation hybrid system is a commonly used advanced oxidation technique that utilizes persulfate to generate SO4-center dot and center dot OH for degrading POPs. This work provides a critical review of various methods of peroxide activation and discusses the advantages, disadvantages, and mechanisms of activated persulfate. The study aims to promote the large-scale application of persulfate technologies and provide guidance for choosing the most suitable activation method for degrading different types of POPs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Electrochemistry
Alvaro Ramirez, Martin Munoz-Morales, Francisco Jesus Fernandez-Morales, Javier Llanos
Summary: A circular economy approach was used to convert biomass wastes polluted with metals to generate electroactive carbon materials for the electrochemical production of hydrogen peroxide. The carbon materials were pretreated and post-treated to improve their performance. The results showed that these materials could be a sustainable alternative to carbon black for the electrochemical production of hydrogen peroxide.
ELECTROCHIMICA ACTA
(2023)
Article
Environmental Sciences
Tingyu Cui, Zhihui Xiao, Zhenbei Wang, Chao Liu, Zilong Song, Yiping Wang, Yuting Zhang, Ruoyu Li, Bingbing Xu, Fei Qi, Amir Ikhlaq
Summary: This study investigated the degradation of Carbamazepine by electro-Fenton oxidation using a FeS2/carbon felt cathode, accelerating the reaction between H2O2 and ferrous ions to produce more hydroxyl radicals and eliminate iron sludge. Various operational parameters were explored, and an empirical kinetic model was established to predict changes in CBZ concentration. The contribution of different oxidation types to the EF process was calculated and the role of the FeS2-modified cathode was verified through kinetic analysis and quenching experiments.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Jong-Gook Kim, Hye-Bin Kim, Dong-Hun Shin, Daniel S. Alessi, Eilhann Kwon, Kitae Baek
Summary: This study investigated a novel in-situ generation system combining electrochemical oxidation and pyrite oxidation to enhance oxidation efficiency. The results indicated that the combined system significantly increased the oxidation rate of organic pollutants, demonstrating a synergistic effect.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Kubra Ulucan-Altuntas, Senem Yazici Guvenc, Emine Can-Guven, Fatih Ilhan, Gamze Varank
Summary: This study investigated the degradation of oxytetracycline by heat-activated peroxydisulfate and peroxymonosulfate processes. Response surface methodology was used to evaluate the effect of process parameters on oxytetracycline removal efficiency, showing significant results for both processes. The predicted oxytetracycline removal efficiencies for the PDS and PMS processes were 89.7% and 84.0%, respectively, with the PDS process having higher kinetic constants at all pH values than the PMS process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Agricultural Engineering
Hanyue Sun, Ruizhi Xing, Xiaoyu Ye, Keke Yin, Yilan Zhang, Zhi Chen, Shungui Zhou
Summary: The production of hydroxyl radicals ((OH)-O-center dot) during composting and its effect on composting efficiency were investigated in this study. Iron mineral supplemented thermophilic composting (imTC) was proposed as a method to enhance (OH)-O-center dot production and accelerate the maturation of composting. The results showed that imTC had a 1.39-fold increase in (OH)-O-center dot production compared to ordinary thermophilic composting (oTC). The increase in (OH)-O-center dot significantly improved organic matter degradation and humic substances formation, resulting in a 25% reduction in maturity time.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Lei Wang, Yi Chen, Baiyang Chen, Jie Yang
Summary: This study showed that reduced oxygen mainly generates center dot OH, and photolysis products can trigger the formation of H2O2 under 254 nm UV. Additionally, evidence of direct photolysis-induced indirect photolysis phenomenon was presented, along with a comprehensive methodology to identify the presence and sources of radicals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Zijun Tan, Xin Qin, Peike Cao, Shuo Chen, Hongtao Yu, Yan Su, Xie Quan
Summary: By enhancing the adsorption of H2O2 on a nitrogen-doped porous carbon (NPC) catalyst, highly active &•OH is generated for the electrochemical-activation of H2O2. The study provides new insight into the fabrication of efficient carbonaceous catalysts for the degradation of refractory organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Yulong Liu, Xianxian Sheng, Mudassir Habib, Qian Sui, Shuguang Lyu
Summary: This research investigated the activation mechanism of homemade nano-calcium peroxide by pyrite in synergy with citric acid, and demonstrated its great potential in degrading naphthalene in aqueous solution. The system showed excellent degradation performance and high tolerance to complex water matrixes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yang Li, Christopher J. Miller, Lei Wu, T. David Waite
Summary: This study demonstrates an electrochemical advanced oxidation process (EAOP) that can simultaneously catalyze the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR) to generate atomic hydrogen (H*) and hydrogen peroxide (H2O2) in situ. By using a palladium-coated carbon-PTFE gas diffusion electrode (Pd/C GDE) as a catalytic cathode, hydroxyl radicals ((OH)-O-center dot) can be formed by the reaction of electrogenerated H* with H2O2. The H*/GDE process is more effective in degrading organic contaminants compared to the conventional H*/H2O2 process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Sunil Ghatge, Youri Yang, Yongseok Ko, Younggun Yoon, Jae-Hyung Ahn, Jeong Jun Kim, Hor-Gil Hur
Summary: The highly recalcitrant PE plastics can be efficiently degraded with small organic acids produced using novel Bio-Fenton and Bio-Photo-Fenton reactions. The TiO2-GOx reaction under UV radiation resulted in significantly higher release of organic acids compared to free GOx reaction.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Sihyun An, Younggun Yoon, Jae-Hyung Ahn, Dayeon Kim, Hang-Yeon Weon, Ye-eun Kim, Hor-Gil Hur, Youri Yang
Summary: The Bio-Fenton reaction was used to degrade bisphenol A (BPA), a commonly used plastic additive, by in-situ generated hydrogen peroxide (H2O2). The reaction conditions included glucose oxidase (GOx), glucose, and Fe(III)citrate at pH 5.3. The reaction produced center dot OH, which contributed significantly to BPA degradation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Electrochemistry
Wen Zhang, Manshu Zhao, Xinhua Wang, Shuguang Wang, Mingming Gao
Summary: This study investigates the behavior of graphite supported TiO2 in anodic oxidation. It is found that the TiO2/C anode generates H2O2 as an intermediate, which then indirectly decomposes to produce center dot OH. At higher potentials, the direct decomposition of H2O is the main source of OH generation, but it is inhibited by high concentrations of H2O2. The relationship between oxygen defects and center dot OH generation is experimentally established, and the mechanisms of OH generation are correlated with oxygen vacancies and Ti-OH structures.
ELECTROCHIMICA ACTA
(2022)
Article
Computer Science, Artificial Intelligence
Kaiwen Dong, Yanjing Sun, Xiaozhou Cheng, Xiaolin Wang, Bin Wang
Summary: In this paper, the authors propose a structure-context complementary network (SCC-Net) for human pose estimation, which consists of an enhanced attention mechanism and an atrous convolution-based module. The proposed modules, namely cross-coordinate attention bottleneck (CCAB) and waterfall residual atrous pooling (WRAP), improve the performance of body joint detection by addressing challenges such as occlusion and background confusion. The experimental results on benchmark datasets demonstrate the effectiveness of the proposed modules and the holistic SCC-Net.
APPLIED INTELLIGENCE
(2023)
Article
Environmental Sciences
Fenghua Li, Xianqi Zhao, Yanni Jiao, Xinglan Duan, Lianlong Yu, Fengjia Zheng, Xiaolin Wang, Lin Wang, Jia-Sheng Wang, Xiulan Zhao, Tianliang Zhang, Wei Li, Jun Zhou
Summary: This study analyzed the exposure level and health risks of aflatoxins (AFs) and zearalenone (ZEA) through cooking oil consumption in Shandong, China. The findings showed that children are facing the highest health risk, and liver cancer incidence is associated with exposure to aflatoxins.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Xiaoli Wang, Bo Yuan, Ning Zhu, Rongrong Mu, Hongli Zheng, Changsheng Shao, Yanyan Zhao, Jun Mei, Dongliang Yu, Liping Ke, Yuqiang Sun, Cai Fangfang
Summary: This study further investigated the expression pattern and promoter characteristics of GhLAR1, a critical enzyme in the synthesis pathway of proanthocyanidins in cotton fibers. The results showed that GhLAR1 was strongly expressed in fibers and flowers, with significantly higher expression levels in brown cotton compared to white cotton. The GhLAR1 promoter contained light response elements and defense-related transcription factor-binding boxes, which may explain its response to temperature, NaCl, and PEG treatments.
MOLECULAR BIOTECHNOLOGY
(2023)
Article
Polymer Science
Xin-Xin Zhi, Hua-Sen Wang, Jie Jia, Xiao-Lei Wang, Yan-Shuang Ga, Shu-Jing Chen, Jin-Gang Liu
Summary: In this study, alignment agents derived from different poly(amic acid)s (PAAs) were prepared and applied to the fabrication of liquid crystal (LC) minicells. The polyimides (PI) alignment layers obtained from the thermal dehydration reaction of the PAA precursors showed good alignment effects to the LC molecules and exhibited good optoelectronic features.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Letter
Surgery
Weili Feng, Anqi Lu, Daoqiang Huang, Xiaoping Wang
ASIAN JOURNAL OF SURGERY
(2023)
Article
Engineering, Civil
Muhammad Mannan Afzal, Xiaolei Wang, Lin Sun, Ting Jiang, Qingkai Kong, Yi Luo
Summary: Glaciers of different dimensions in the Karakoram region respond differently to climate change. The Open Global Glacier Model was used to quantify these variabilities in the Hunza basin and understand how glaciers respond to past and future climate change. The results indicate a negative mass balance and accelerated glacier retreat in recent years. Monthly glacier runoff is sensitive to summer temperature, but glacier runoff per unit area remains consistent across glacier classes. Future climate change scenarios suggest significant volume loss for small and large glaciers, impacting basin runoff. Immediate mitigation measures are needed for long-term water security in the region.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Feng Jing, Dongmei Zhou, Xiaomin Chen, Ruijuan Qu, Jianxin Tan
Summary: This study found that biochar can reduce the bioavailability of soil microelement zinc and limit its uptake by rice. Increasing application rate of biochar improves rice growth and soil electrical conductivity. Biochar can also limit the enrichment of DTPA-extracted zinc in <0.25mm soil aggregates and enhance the transformation of acid extractable zinc into reducible and oxidizable forms.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Automation & Control Systems
Kezhen Han, Jian Feng, Yueyang Li, Ping Jiang, Xiaohong Wang
Summary: This article presents new improvements to the relevant constrained predictive fault-tolerant tracking control (FTTC) methods through embedding optimal preview regulation and reference governance, optimizing robust tracking performance and enlarging fault-tolerant admissible region.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Environmental Sciences
Yue Ma, Lin Wang, Nan Xu, Shiyi Zhang, Xiao Hua Wang, Song Li
Summary: Coastal slope is a crucial factor in understanding hydrodynamic and morphological processes, estimating extreme water levels, coastline erosion, and coastal vulnerability. However, accurate estimation of coastal slopes is limited, especially in sparsely populated and remote areas. This study demonstrates the potential of ICESat-2 measurements to estimate coastal slope, with promising results obtained in Texas, USA. The improved accuracy of ICESat-2 derived coastal slopes compared to current large-scale slopes derived from other sources suggests the method's applicability at a global scale.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Qingnan Chu, Zhimin Sha, Detian Li, Yanfang Feng, Lihong Xue, Dongmei Zhou, Baoshan Xing
Summary: Oxygen nanobubble-loaded biochars have been found effective in reducing copper toxicity in paddy soils and improving crop productivity. This amendment improves the redox potential and dissolved oxygen concentration in the rhizosphere, promotes root iron plaque formation, and inhibits copper influx. It also enhances soil microbial diversity and increases bacterial genes abundance involved in copper complexation and export. The sequestered copper in root iron plaque and soil bacteria prevents its accumulation in edible parts of the plants.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Qiang Yang, Weixuan Wang, Yiyi Zhou, Jiachen Hao, Guodong Fang, Cun Liu, Peixin Cui, Yujun Wang
Summary: High-performance, environmentally friendly, and low-cost single-atom catalysts (SACs) show great potential in the degradation of organic contaminants using peroxymonosulfate (PMS). A novel manganese single-atom catalyst (SPBC-700N) was successfully synthesized using Phytolacca americana as a precursor through one-step pyrolysis. The SPBC-700N exhibited extraordinary catalytic activity for PMS activation, leading to over 90% removal of chloroquine phosphate (CQP) within 30 minutes. The excellent catalytic performance of the Mn SAC/PMS system is attributed to the maximized utilization of manganese atoms and the synergistic effect with neighboring pyrrolic nitrogen sites.
ACS ES&T ENGINEERING
(2023)
Article
Engineering, Environmental
Bo Fan, Bingnan Zhou, Si Chen, Fengxiao Zhu, Bo Chen, Zhimin Gong, Xiaolei Wang, Changyin Zhu, Dongmei Zhou, Feng He, Shixiang Gao
Summary: This study proposed a new synthesis method for preparing Cu-Fe bimetals (Cu-Febm (CuSO4)) and found that the formation of Fe0/FeSx structure compensated for the negative effect of Cu2O on the activity of Cu-Febm (CuSO4) particles. The Cu-Febm (CuSO4) bimetals showed great potential for the removal of chlorinated hydrocarbons in water.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Yixuan Wang, Danyu Huang, Chenghao Ge, Xiaolei Wang, Changyin Zhu, Ning Chen, Guodong Fang, Dongmei Zhou
Summary: Recently, the production of hydroxyl radical (&BULL;OH) during soil redox fluctuations has been reported, but the low efficiency of contaminant degradation hinders engineering remediation. This study found that the addition of low-molecular-weight organic acids (LMWOAs), such as oxalic acid (OA) and citric acid (CA), significantly enhanced &BULL;OH production during oxygenation of anoxic paddy slurries. The highest &BULL;OH accumulation was observed with 0.5 mM CA due to its strong capacity for complexation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Proceedings Paper
Automation & Control Systems
Yan Ming, Wang Jiaxing, Li Heqi, Liu Kai
Summary: This article proposes a neural network based direct lift landing control method for carrier-based aircraft, aiming at optimizing the control parameters in the landing control phase. By introducing neural network into the direct force loop, the controller parameters are optimized online to improve the convergence speed. Simulation experiments with the interference of deck motion, carrier air wake, and Monte Carlo pull deviation condition are performed, and the results show that the trajectory correction speed of the ship-based aircraft direct lift landing control based on neural network is faster, with smaller overshoot and higher accuracy.
PROCEEDINGS OF 2022 INTERNATIONAL CONFERENCE ON AUTONOMOUS UNMANNED SYSTEMS, ICAUS 2022
(2023)
Proceedings Paper
Energy & Fuels
Fan Yang, Xiaohong Wang, Haishan Guo, Hemin Yang, Zhixin Huo, Youzong Jian, Jing Hu
Summary: This paper proposes a direct AC-AC modular multilevel converter called Hexverter, which is based on cascaded full-bridge sub-modules and is suitable for connecting two systems operating at different frequencies. However, the operating range of Hexverter is limited by the capacitor voltage of the sub-modules. To address this issue, a strategy based on optimal neutral voltage and circulating current is proposed to limit the capacitor voltage within a specific range and minimize switching loss. Simulation results confirm that this strategy effectively suppresses the magnitude of the capacitor ripple voltage and reduces switching loss.
PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM ON NEW ENERGY AND ELECTRICAL TECHNOLOGY
(2023)