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SSRN 2023年

作者： Zhang, Lei Yang, Libin Chen, Jiabin Zhang, Yalei Zhou, Xuefei State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Key Laboratory of Yangtze Water Environment Ministry of Education Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Tongji University Shanghai200092 China

Magnesium-functionalized Magnolia grandiflora Linn leaf-derived biochar (MBC) capable of efficiently reclaiming phosphorus from urine was synthesized by slow co-pyrolysis. Four adsorption kinetic and seven adsorption isotherm models were fitted to the batch adsorption and desorption experimental data, and it was found that pseudo-first-order kinetic model and multilayer model with saturation best described the phosphate-phosphorus (PO43-P) adsorption process by MBC. MBC and phosphorus-saturated MBC (P-MBC) were found to offer outstanding phosphorus adsorption and slow release properties, respectively. Based on material characterization, statistical physics, adsorption energy distribution and statistical thermodynamics, a multi-ionic, inclined orientation, entropy-driven spontaneous endothermic process of MBC on PO43-P was proposed, involving physicochemical interactions (porous filling, electrostatic attraction, ligand exchange and surface precipitation). Further, seed germination and early seedling growth experiments proved that P-MBC can be used as a slow-release fertilizer. Overall, MBC offers prospective applications as an efficient phosphorus adsorbent and then as a slow-release fertilizer. © 2023, The Authors. All rights reserved.

关键词： Magnesium

Rapid oxidation of black phosphorus induced by copper ions via promoting oxygen bonding and phosphate desorption

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National Science Open 2024年第5期3卷 100-113页

作者： Zhiyu Zhu Sha Yang Kun Lu Shipeng Dong Xiaoyan Sun Jieyin Zheng Shixiang Gao Wei Liu Liang Mao State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentChemistry and Biomedicine Innovation CenterNanjing UniversityNanjing 210093China Nano Structural Materials Center School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Environmental Science and Engineering Zhejiang Gongshang UniversityHangzhou 310018China Nanjing Qixia District Hospital Nanjing 210046China Cambridge A-Level Centre Nanjing Jinling High SchoolNanjing 210005China

Black phosphorus(BP)has garnered significant interest in the field of biomedicine because of its exceptional *** oxidation product of BP phosphate has been utilized in numerous studies for the purpose of repairing bone defects and inducing apoptosis and autophagy in cancer ***,this process has drawbacks in terms of low yield and a slow rate of phosphate *** this study,we found that the oxidation rate of BP was increased 120-fold and the yield proportion of phosphate BP product was increased from 30%to 85%with the presence of less than 0.1%copper ions(Cu^(2+))in the reaction *** enhancement was attributed to the fact that the presence of Cu^(2+)promoted the bonding of oxygen on the BP surface and then the desorption of phosphate molecules from the BP *** study offers a novel perspective on the process of BP oxidation and introduces innovative concepts for the development of biological drug delivery systems capable of rapid decomposition.

关键词： black phosphorus reaction pathway reaction efficiency copper ions reaction mechanism

Pilot-Scale Study on an Advanced Fe-Cu Process for Refractory Wastewater Pretreatment

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SSRN 2023年

作者： Fan, Jin-Hong Yao, Zhen-Long Wu, De-Li Liu, Xia Ma, Lu-Ming State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science & Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

Due to the extreme pH, high color, and poor biodegradability of refractory wastewater, it has combined severe impacts on biological treatment. Thus, an advanced Fe-Cu process with redox reaction and spontaneous coagulation was investigated and applied for pilot-scale (wastewater flow rate of 2000 m3·day-1) pretreatment of separately discharged acidic chemicals and alkaline dyeing wastewater. The advanced Fe-Cu process had five functions: (1) increase the pH of chemical wastewater to 5.0 and above with influent pH around 2.0;(2) transform refractory organics of the chemical wastewater with 10.0% chemical oxygen demand (COD) and 30.8% color removal, resulting in the enhanced ratio of biological oxygen demand after five days (BOD5) to COD (B/C) from 0.21 to 0.38;(3) neutralize pH of the pretreated chemical wastewater for coagulation application with the alkaline dyeing wastewater to avoid alkaline chemical adding;(4) achieve nascent Fe(II) concentrations of average 925.6 mg∙L-1 by Fe-Cu internal electrolysis for mixed wastewater coagulation that removes an average of 70.3% color, 49.5% COD;(5) obtain COD removal and B/C enhancement that are more efficient than FeSO4∙7H2O coagulation while avoiding secondary pollution. The green process provides an effective and easy-implemented solution for separately discharged acidic and alkaline refractory wastewater pretreatment. © 2023, The Authors. All rights reserved.

关键词： Biodegradability

Evaluating City Road Dust Emission Characteristics with a Dynamic Method: A Case Study in Luoyang, China

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SSRN 2023年

作者： Man, Hanyang Chen, Jiawei Cai, Wenying Lin, Laichang Chen, Xiaoduo Shao, Xiaohan Bao, Yumeng Zhu, Bo Xu, Lizhong College of Environmental and Resource Sciences Fujian Key Laboratory of Pollution Control & Resource Reuse Fujian Normal University Fuzhou350007 China Digital Fujian Internet-of-things Laboratory of Environmental Monitoring Fuzhou350007 China

Road dust constitutes a crucial source of non-exhaust particulate matter emissions in urban transportation systems. Conventional inventory methodologies, which depend on a limited set of dust loading test outcomes, fail to accurately represent the emission features of an entire road network. Consequently, this shortcoming precludes the generation of high spatiotemporal resolution emission inventories, which are essential for supporting refined emission control measures and health risk assessments. In the present study, we advance the AP-42 method by incorporating flux techniques to derive high-resolution emission factors for road networks. Traffic data, including speed, vehicle type, and vehicle counts, are obtained from traffic checkpoints at an hourly resolution and subsequently utilized to calculate the road dust inventory at a 100-meter spatial resolution. The Luoyang old city district serves as a case study for applying this novel approach, facilitating an examination of high spatiotemporal resolution emission features such as road emission intensity and bimodal temporal fluctuations. Through emission hotspot analysis, we discovered that 7% of the road length contributes to a substantial 40% of total road dust emissions. Based on these insights, we propose more effective road dust control strategies tailored to address the identified emission hotspots. © 2023, The Authors. All rights reserved.

关键词： Risk assessment

Recent progress of radionuclides separation by porous materials

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Science China Chemistry 2024年第11期67卷 3515-3577页

作者： Yinghui Xie Long Yu Long Chen Cheng Chen Li Wang Fenglei Liu Yun Liao Peng Zhang Tao Chen Yihui Yuan Yuexiang Lu Boyang Huang Hui Yang Suhua Wang Shuao Wang Lijian Ma Feng Luo Yunhai Liu Baowei Hu Hongqing Wang Duoqiang Pan Wenkun Zhu Ning Wang Zhe Wang Liang Mao Shengqian Ma Xiangke Wang Guangdong Provincial Key Laboratory for Green Agricultural Production and Intelligent Equipment School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000China School of Life Science Shaoxing UniversityShaoxing 312000China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China College of Chemistry Sichuan UniversityChengdu 610064China School of Chemistry and Materials Science East China University of TechnologyNanchang 330013China School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China Frontiers Science Center for Rare Isotopes Lanzhou UniversityLanzhou 730000China State Key Laboratory of Environment-friendly Energy Materials National Co-innovation Center for Nuclear Waste Disposal and Environmental SafetySichuan Civil-military Integration InstituteSchool of National Defence&Nuclear Science and TechnologySouthwest University of Science and TechnologyMianyang 621010China State Key Laboratory of Marine Resource Utilization in South China Sea Collaborative Innovation Center of Marine Science and TechnologyHainan UniversityHaikou 570228China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210093China Department of Chemistry University of North TexasDentonTX 76201USA

The separation of radionuclides is critical for the sustainable development of nuclear energy. It is urgent to design and prepare functionalized materials for efficient radionuclides separation. Porous materials are considered excellent candidates for the separation of radionuclides under complex conditions due to their high specific surface areas, tunable pore structures and controllable functionalities. In this review, we summarized the design, preparation and functionalization of porous materials and their application for separation of radionuclides in the past five years, discussed the separation performance and analyzed the structure-activity relationship between various radionuclides and porous materials, and systematically clarified their characterization and mechanism of different type porous materials. We also introduced the detection, irradiation and chemical toxicity of different reflective radionuclides.

关键词： porous materials radionuclides detection separation radiotoxicity interaction mechanism

The Divergency of Microbiological Influenced Corrosion for Diverse Pipe Materials in the Drinking Water Distribution System

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SSRN 2023年

作者： Yu, Haitao Li, Weiying Zhang, Wei Sun, Shengxin Song, Xin Zhang, Guosheng College of Environmental Science and Engineering Tongji University Shanghai200092 China State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Tongji University China

Microbiological influenced corrosion (MIC) was prevalent in the water supply industry, especially in drinking water distribution system (DWDS) where ferrous materials are the main component. The MIC behaviors for four popular pipe materials (304 stainless steel, 316 stainless steel, Q235 carbon steel, and nodular cast iron) were studied by the dynamic water supply network simulation in the paper. The biomass densities of surface coupons in the experimental period were ranked as follows: nodular cast iron (20562 cells/mm2, ICC) > Q235 carbon steel (8697cells/mm2, ICC) > 316 stainless steel (6350 cells/mm2, ICC) > 304 stainless steel (5520 cells/mm2, ICC). Microbial community structure was mainly influenced by environmental factors, in especial the pipe materials significantly impacted dominant genera inhabited on experimental materials, among which the 316 stainless steel showed the best biostability. Moreover, the profile of polarization resistance and corrosion current exhibited a similar variation tendency, which increased in the first 30 days and then decreased later. The maximum corrosion current of each material was 2.10 × 10-4 A (304SS), 2.70 × 10-4 A (316SS), 2.58 × 10-4 A (Q235 carbon steel), and 1.30 × 10-4 A (nodular cast iron). SEM and XRD results confirmed that the surficial porous corrosion layer controlled the diffusion process of iron corrosion where β-FeOOH and γ-FeOOH were the main components of the corrosion product. Overall, the results of community diversity, electrochemical parameters, and corrosion layer structure showed that 316 stainless steel possessed the best biological corrosion resistance among the four kinds of pipes. © 2023, The Authors. All rights reserved.

关键词： Potable water

Adsorption of Highly Toxic Chlorophenylacetonitriles on Typical Microplastics in Aqueous Solutions: Kinetics, Isotherm, Impact Factors and Mechanism

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SSRN 2023年

作者： Yang, Mansu Zhang, Di Chu, Wenhai State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

Microplastics (MPs) widely exist in all kinds of water bodies. The unique physical and chemical properties of MPs make them easy to become the carrier of organic pollutants, but the interaction between disinfection by-products (DBPs) and MPs has not been studied yet. In this study, the occurrence of emerging high-toxic chlorophenylacetonitriles (CPANs) in actual WWTP effluents was determined for the first time, and it was found that CPANs ubiquitously existed in WWTP effluents, and the concentration ranged from 88.01 ± 5.36 ng/L to 219.00 ± 16.44 ng/L. Then, the typical MPs (i.e., polyethylene (PE), polyethylene terephthalate (PET) and polystyrene (PS)) in WWTP effluents were selected to study their adsorption behavior of CPANs. Through adsorption kinetics and isotherm experiments, we found that the adsorption capacity of the three MPs followed the following order: PS > PET > PE. After that, through the determination of the specific surface area, contact angle, FTIR spectrum, crystallinity and glass transition temperature (Tg) of MPs, and the analysis of the properties of CPANs, the related mechanism was clarified as follows: the adsorption of CPANs on PE and PET was mainly influenced by hydrophobic interaction, pore-filling and Van der Waals force, and PS had the highest adsorption capacity due to the existence of π-π interaction. Finally, the effects of pH and dissolved organic matter on adsorption behavior were studied, and their effects were relatively limited. The results indicated that MPs may adsorb CPANs in actual WWTP effluents, and special attention should be paid to the possible impacts on the aquatic environment caused by the transfer of CPANs on MPs. © 2023, The Authors. All rights reserved.

关键词： Adsorption

Removing microplastics from aquatic environments:A critical review

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Environmental Science and Ecotechnology 2023年第1期13卷 37-53页

作者： Yusheng Pan Shu-Hong Gao Chang Ge Qun Gao Sijing Huang Yuanyuan Kang Gaoyang Luo Ziqi Zhang Lu Fan Yongming Zhu Ai-Jie Wang School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin150090China State Key Laboratory of Urban Water Resource and Environment School of Civil&Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhenChina Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) GuangzhouChina Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China

As one of the typical emerging contaminants,microplastics exist widely in the environment because of their small size and recalcitrance,which has caused various ecological *** paper summarizes current adsorption and removal technologies of microplastics in typical aquatic environments,including natural freshwater,marine,drinking water treatment plants(DWTPs),and wastewater treatment plants(WWTPs),and includes abiotic and biotic degradation technologies as one of the removal ***,numerous studies have shown that enrichment technologies have been widely used to remove microplastics in natural freshwater environments,DWTPs,and *** removal of microplastics via WWTPs is critical to reduce the release to the natural environment as a key connection point to prevent the transfer of microplastics from society to natural water *** technology has outstanding pre-degradation effects on microplastics,and the isolated microbial strains or enriched communities can degrade up to 50%or more of pre-processed ***,more research focusing on microplastic degradation could be carried out by combining physical and chemical pretreatment with subsequent microbial *** addition,the current recovery technologies of microplastics are introduced in this *** is incredibly challenging because of the small size and dispersibility of microplastics,and the related technologies still need further *** paper will provide theoretical support and advice for preventing and controlling the ecological risks mediated by microplastics in the aquatic environment and share recommendations for future research on the removal and recovery of microplastics in various aquatic environments,including natural aquatic environments,DWTPs,and WWTPs.

关键词： Aquatic environment Enrichment and removal Microplastics Wastewater treatment plants

Combined Toxicity of Microplastics with Different Sizes and Lead on Zebrafish Through Gut-Liver and Gut-Brain Axes

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SSRN 2023年

作者： Yu, Jing Chen, Ling Wu, Bing State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China School of Food Science and Pharmaceutical Engineering Nanjing Normal University Nanjing210023 China

Microplastics (MPs) can adsorb heavy metals, inducing combined toxicity to aquatic organisms. However, the combined effects of MPs and heavy metals on gut-liver and gut-brain axes are not fully understood. Thus, the combined effects of polystyrene microplastics (PS-MPs) with two concentrations (20 and 200 μg/L) and three sizes (0.1, 10, and 250 μm) and Pb (50 μg/L) on the gut-liver and gut-brain axes of zebrafish were investigated. Results demonstrated that combined exposures of 0.1 μm PS-MPs and Pb resulted in the most dramatic changes to gut microbial community diversity. The expression of zo-1 and occludin were significantly down-regulated in 0.1 μm and 250 μm PS-MPs combined exposures. The lipopolysaccharide content significantly increased in the liver of 0.1 μm and 250 μm PS-MP combined groups than PS-MPs or Pb alone exposures, indicating impaired gut barrier function. Subsequent studies revealed that 0.1 μm and 250 μm PS-MP combined groups induced liver inflammation through the TLR4/NF-κB pathway. Meanwhile, all exposure groups had an impact on the expression of genes related to bile acid metabolism (cyp7a1, fgf19, abcb11b, and slc10a2) and neurotransmitters (tph1a, tph2, pink, and trh). This study sheds new light on the understanding of the toxicity mechanism of MPs and metal. © 2023, The Authors. All rights reserved.

关键词： Microplastic

Formation of secondary inorganic aerosol in a frigid urban atmosphere

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Frontiers of Environmental Science & Engineering 2022年第2期16卷 39-50页

作者： Yuan Cheng Qinqin Yu Jiumeng Liu Youwen Sun Linlin Liang Zhenyu Du Guannan Geng Wanli Ma Hong Qi Qiang Zhang Kebin He State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031China State Key Laboratory of Severe Weather&CMA Key Laboratory of Atmospheric Chemistry Chinese Academy of Meteorological SciencesBeijing 100081China National Research Center for Environmental Analysis and Measurement Environmental Development Center of the Ministry of Ecology and EnvironmentBeijing 100029China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Department of Earth System Science Tsinghua UniversityBeijing 100084China

Formation of secondary inorganic aerosol(SIA)was investigated during a six-month long heating season in Harbin,*** sulfate formation was observed at high relative humidity(RH),with the same threshold RH(80%)for both colder and warmer measurement *** to wintertime results from Beijing,the threshold RH was considerably higher in Harbin,whereas the RH-dependent enhancement of sulfur oxidation ratio(SOR)was less *** addition,the high RH events were rarely encountered,and for other periods,the SOR were typically as low as~***,the sulfate formation was considered inefficient in this *** excluding the several cases with high RH,both SOR and the nitrogen oxidation ratio(NOR)exhibited increasing trends as the temperature increased,with the increase of NOR being *** nitrate to sulfate ratio tended to increase with increasing temperature as *** on a semi-quantitative approach,this trend was attributed primarily to the temperature-dependent variations of precursors including SO_(2) and NO_(2).The influence of biomass burning emissions on SIA formation was also *** stronger impact of biomass burning,an enhancement in NOR was observed whereas SOR was largely *** different patterns were identified as the dominant driver of the larger nitrate to sulfate ratios measured at higher concentrations of fine particulate matter.

关键词： Haze Sulfate Nitrate Heterogeneous chemistry Biomass burning