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Effect of ammonium sulfate combined with aqueous bio-chelator on Cd uptake by Cd-hyperaccumulator Solanum nigrum L.

Chemosphere 2024年 352卷 141317页

作者： Yang, Wei Dai, Huiping Wei, Shuhe Robinson, Brett H. Xue, Jianming Academy of Environmental and Chemical Engineering Shenyang Ligong University Liaoning Shenyang 110159 China College of Biological Science & Engineering Shaanxi Province Key Laboratory of Bio-resources Shaanxi University of Technology Hanzhong 723001 China Key Laboratory of Pollution Ecology and Environment Engineering Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China School of Physical and Chemical Sciences University of Canterbury Christchurch 8041 New Zealand New Zealand Forest Research Institute (Scion) POB 29237 Christchurch 8440 New Zealand

The efficacy of using plants to phytoremediate heavy metal (HM) contaminated soils can be improved using soil amendments. These amendments may both increase plant biomasses and HMs uptake. We aimed to determine the composite effect of ammonium sulfate ((NH₄)₂SO₄) combined with the application of an aqueous stem-extracted bio-chelator (Bidens tripartita L) on the plant biomasses and cadmium (Cd) phytoextraction by Solanum nigrum L. The constant (NH₄)₂SO₄ application mode plus bio-chelator additives collectively enhanced the shoot Cd extraction ability owing to the increased plant biomass and shoot Cd concentration by S. nigrum. The shoot Cd extraction and the soil Cd decreased concentration confirmed the optimal Cd phytoextraction pattern in K8 and K9 treatments (co-application of (NH₄)₂SO₄ and twofold/threefold bio-chelators). Accordingly, Cd contamination risk in the soil (2 mg kg⁻¹) could be completely eradicated (<0.2 mg kg⁻¹) after three rounds of phytoremediation by *** based on K8 and K9 treatments through calculating soil Cd depletion. The microorganism counts and enzyme activities in rhizosphere soils at treatments with the combined soil additives apparently advanced. In general, co-application mode of (NH₄)₂SO₄ and aqueous bio-chelator was likely to be a perfect substitute for conventional scavenger agents on account of its environmental friendliness and cost saving for field Cd contamination phytoremediation by S. nigrum. © 2024 Elsevier Ltd

关键词： Ammonium sulfate ((NH4)2SO4) Aqueous bio-chelator Cadmium Enhanced phytoremediation Solanum nigrum L

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Urban Visual Intelligence: Studying Cities with AI and Street-level Imagery

arXiv

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arXiv 2023年

作者： Zhang, Fan Salazar-Miranda, Arianna Duarte, Fábio Vale, Lawrence Hack, Gary Chen, Min Liu, Yu Batty, Michael Ratti, Carlo Senseable City Lab Massachusetts Institute of Technology United States Department of Civil and Environmental Engineering The Hong Kong University of Science and Technology Hong Kong Department of Urban Studies and Planning Massachusetts Institute of Technology United States Key Laboratory of Virtual Geographic Environment Ministry of Education Nanjing Normal University Nanjing210023 China Institute of Remote Sensing and Geographical Information System Peking University China Centre for Advanced Spatial Analysis Faculty of the Built Environment University College London United Kingdom

The visual dimension of cities has been a fundamental subject in urban studies, since the pioneering work of scholars such as Sitte, Lynch, Arnheim and Jacobs. Several decades later, big data and artificial intelligence (AI) are revolutionizing how people move, sense, and interact with cities. This paper reviews the literature on the appearance and function of cities to illustrate how visual information has been used to understand them. A conceptual framework, Urban Visual Intelligence, is introduced to systematically elaborate on how new image data sources and AI techniques are reshaping the way researchers perceive and measure cities, enabling the study of the physical environment and its interactions with the socio-economic environment at various scales. The paper argues that these new approaches enable researchers to revisit the classic urban theories and themes, and potentially help cities create environments that are more in line with human behaviors and aspirations in the digital age. Copyright © 2023, The Authors. All rights reserved.

关键词： Deep learning

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Anti-Scaling Performance and Mechanism of Coexisted Humic Acid with Different Concentration on Gypsum Scaling in Nanofiltration Process

SSRN

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SSRN 2024年

作者： Wang, Jiaxuan Liang, Hanyu Liu, Zhe Guo, Junjiang Wang, Xinhui Xiong, Jiaqing Wang, Xinruo Hou, Yushi Gao, Min School of Architecture & Civil Engineering Xi’an University of Science and Technology Yan Ta Road No. 58 Xi’an710054 China Shaanxi Yulin Changjialiang Shengli Coal Mine Co. Ltd. Niujialiang Town Yulin719000 China School of Environmental & Municipal Engineering Xi’an University of Architecture & Technology Yan Ta Road No. 13 Xi’an710055 China Key Lab of Northwest Water Resource Environment and Ecology Ministry of Education Xi’an University of Architecture and Technology Xi’an710055 China Yulin Ecological Environment Monitoring Station High-tech Zone Xingda Road Yulin719000 China China Agricultural University China Xi’an University of Architecture and Technology China College of Environmental and Chemical Engineering Xi’an Key Laboratory of Textile Chemical Engineering Auxiliaries Xi’an Polytechnic University Shan Gu Road No. 58 Xi’an710000 China

To reveal the effects of low, medium, and high concentrations of humic acid (HA) on the gypsum scaling behavior in a nanofiltration (NF) system, poly(piperazineamide) composite NF membranes were selected to investigate the membrane fouling characteristics by saturated gypsum coexisted with three concentrations of HA - 2, 10, and 50 mg/L, respectively. Higher HA concentration resulted in lesser NF membrane flux decline but a lower flux recovery rate. Because of HA presenting in the feedwater, the negative charge carried by solute, particle size, and the fouled NF membrane surface negative charge were increased overall, while the fouled membrane surface hydrophilicity and the crystallinity of gypsum in the fouling layer were decreased. Moreover, the morphology of gypsum form in the bulk solution as well as on the NF membrane surface and the structure of the fouling layer were changed. It is suggested that HA acted as an antiscalant through two pathways. Firstly, HA likely tied up calcium ion that would have otherwise formed incipient nuclei for gypsum, therefore reducing gypsum saturation and inhibiting bulk crystallization. Secondly, HA adsorbed onto the active gypsum crystal growth sites, exerting a steric effect that inhibited nucleation and crystallization. © 2024, The Authors. All rights reserved.

关键词： Nanofiltration

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Study on the Effect of Cyclic Catalytic Pyrolysis on Sludge Pyrolysis Products

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SSRN 2023年

作者： Wang, Maoqing Wu, Yan Zhang, Yuexin Xia, Yaping Lan, Guoxin Yan, Bin Yu, Yue Xiong, Xinyi Zou, Junhan Zhu, Yin College of Environmental Science and Engineering Beijing Forestry University Beijing100083 China Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir Chongqing Three Gorges University Wanzhou404020 China Chongqing GreenKarbon Environmental Protection Technology Co. Ltd. Chongqing400050 China

Pyrolysis technology has become a hot issue in the industry of harmless treatment of sludge in recent years. The present ectopic catalytic pyrolysis process suffers from the defects of unidirectional flow of pyrolysis steam, poor heating value of the output heavy tar, which is difficult to be reutilized, etc. In this paper, we design a cyclic catalytic cracking by pyrolytic steam process to optimize the above defects: under the optimal experimental conditions (pyrolysis starting temperature was 500 °C, final temperature was 800 °C, iron-based carbon catalyst dosage was 4 g, and motor speed was 1050 r/min), this process generated more pyrolysis gas and light tar. The cyclic catalytic cracking by pyrolytic steam process could increase the residence time of pyrolysis steam in the reaction unit and promoted the secondary cracking, catalytic and reforming effects of tar. © 2023, The Authors. All rights reserved.

关键词： Tar

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Verification of Lactobacillus brevis tolerance to simulated gastric juice and the potential effects of postbiotic gamma-aminobutyric acid in streptozotocin-induced diabetic mice

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Food science and Human Wellness 2022年第1期11卷 165-176页

作者： Amro Abdelazez Heba Abdelmotaal Smith Etareri Evivie Maha Bikheet Rokayya Sami Hassan Mohamed Xiangchen Meng Key Laboratory of Dairy Science Ministry of EducationCollege of Food SciencesNortheast Agricultural UniversityHarbin 150030China College of Agriculture and Forestry Linyi UniversityLinyi 276005China Department of Dairy Microbiology Animal Production Research InstituteAgriculture Research CentreDokkiGiza 12618Egypt Department ofMicrobiology SoilWaterEnvironmentand Microbiology Research InstituteAgriculture Research CentreGiza 12619Egypt Department of Food Science&Hunan Nutrition Faculty of AgricultureUniversity of BeninBenin City 300001Nigeria Department of Dairy Science Faculty of AgricultureMinia UniversityMinia 61511Egypt Department of Food Science and Nutrition College of SciencesTaif UniversityP.O.11099Taif21944Saudi Arabia Colin Ratledge Center for Microbial Lipids School of Agriculture Engineering and Food ScienceShandong University of TechnologyZibo 255049China Department of Botany and Microbiology Faculty of ScienceAl-Azhar UniversityAssiut 71524Egypt

The therapeutic effect of gamma-aminobutyric acid(GABA)on diabetes was spread as one of the alarming epidemics *** study aims to investigate the function of Lactobacillus brevis KLDS_(1.0727) and KLDS_(1.0373) strains as glutamic acid decarboxylase 65(GAD65)carriers capable of generating GABA by comparing in vitro free and freeze-dried models and GABA intervention in *** amplification of gad and in vitro i.e.,(growth rate,viability at different pH,bile tolerance,and survivability in simulated gastric juice)were *** vivo experiments were conducted in 7 groups of C57BL/6J *** group was injected with streptozotocin(Cont_(STZ),INSSTZ,LAC1_(STZ),LAC_(1MFDSTZ),LAC_(2STZ),LAC_(2MFDSTZ))daily except for the control(Cont).One group was injected with insulin(INSSTZ).The body weight and hyperglycemia in the blood were assessed weekly,post-euthanasia blood plasma parameters,insulin,and histological examination were *** indicated *** strains demonstrated a great tolerance to bile and simulated gastric juice in vitro(P<0.05).Cont_(STZ) had the highest average glucose level(6.84±6.46)mmol/L while INS_(STZ) expressed dramatically decreed in glucose level and displayed a significant decline in the average of weekly blood glucose(−5.74±3.08)mmol/*** lowest body weight(ContSTZ)was(19.30±0.25)*** on the blood plasma analysis,*** strains improved good cholesterol properties,liver and kidney functions,where most of these parameters fall within the average the reference range and prevent the development of symptoms of type 1 diabetes in *** recommended,*** should be commonly distributed as a postbiotic GABA in pharmaceutical and nutritional applications.

关键词： Diabetes Gamma-aminobutyric acid Postbiotics Lactobacillus brevis In vitro C57BL/6J mice

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Investigating the Impact of Anode Materials on Performance and Microbial Community in an Integrated Chamber-Free Microbial Fuel Cell

SSRN

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SSRN 2023年

作者： Zhang, Taotao Chen, Peng Chen, Yahui Li, Yongyun Ma, Haitao Han, Pengju Liu, Wei Wang, Yao Qing, Renwei Xu, Fei Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life Sciences Sichuan University Sichuan Chengdu610065 China School of Life Science and Engineering Southwest Jiaotong University Sichuan Chengdu610031 China Institute of New Energy and Low-Carbon Technology Sichuan University Sichuan Chengdu610065 China

There are two basic configurations of the MFC system, namely the dual-chamber and signal chamber. However, the complex configuration and the high electrode material's high resistance limit their practical application in power generation and wastewater purification. To this end, we constructed three microbial fuel cells using Carbon felt, Ni/Ti, and Ag-Ni/Ti as anodes, based on our previous research on the invention of an integrated microbial fuel cell (iMFC). After 21 days of operation The Ag-Ni/Ti-MFC performed the best in both bioelectricity output and removal of target pollutants, with the bioelectricity output parameters of 0.773V for open-circuit voltage, and a maximum current density of 552.1429 mA/m2, a power density of 426.8064 mW/m2, and the removal rates of 67.90% for chemical oxygen demand (COD), 55.20% for total Nitrogen (TN), and 61.83% for Ammonia Nitrogen (NH3-N), respectively. Furthermore, the introduction of transmembrane and outer-membrane silver nanoparticles likely played a significant role in boosting charge-extraction efficiency in Shewanella MFCs. Additionally, 16S rDNA analysis indicated that Comamonas, Araclostridium, and Asaccharospora had a higher relative abundance in the Ag-Ni/Ti-MFC anode than in others. Overall, the surface structure of the different anode materials played a critical role in the bioelectricity and wastewater purification of iMFC through affecting the mass transfer of substrate and metabolites. © 2023, The Authors. All rights reserved.

关键词： Microbial fuel cells

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Evaluation on the Performance of Sbs/Cr Composite-Modified Deicing Asphalt Mixture Prepared for Ultra-Thin Wearing Course

SSRN

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SSRN 2023年

作者： Sun, Zhilun Liu, Shu Chen, Jian Qian, Jingbang Key Laboratory of Special Environment Road Engineering of Hunan Province Changsha University of Science & Technology Changsha China Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute University of Nottingham Ningbo China Ningbo China China Railway Fourth Group Co. Ltd. Design and Research Institute Hefei China

The article focuses on developing deicing asphalt mixture used for ultra-thin wearing course by mitigating the possible negative impact of anti-freezing agents on asphalt's performance through SBS/CR composite modification. High/low temperature performance, water stability and deicing-related capabilities of the asphalt mixture were evaluated by conducting a series of laboratory tests from micro to macro level considering different incorporation rates of anti-freezing agent and SBS/CR modifier. The results find that SBS/CR modification enhances high and low-temperature properties of the binder, and optimal incorporation ratios are 16% and 2%, respectively. The addition of anti-freezing agents as the filling material improves the high-temperature performance of the mortar, but an excessive replacement negatively affects low-temperature performance. For asphalt mixtures, anti-freezing agents enhance high-temperature and anti-sliding properties, but they have adverse effects on low-temperature performance and water stability, with a recommended replacement ratio below 40%. A linear relationship between anti-freezing agent incorporation and snow melting and deicing effectiveness is observed. Conductivity has been identified as a valuable indicator for predicting asphalt mixture functionality. This research can provide valuable insights for the mixture design and facilitating the practical implementation of this innovative functional material. © 2023, The Authors. All rights reserved.

关键词： Temperature

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Heatwaves Drive Trends in Compound Dry-Hot Events in China

SSRN

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SSRN 2023年

作者： Hu, Yanjun Wang, Wen Wang, Peng Teuling, Adriaan J. Zhu, Ye State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing China College of Ecology and Environment Hainan University Haikou China Hydrology and Quantitative Water Management Group Wageningen University and Research Wageningen Netherlands School of Hydrology and Water Resources Nanjing University of Information Science and Technology Nanjing China

Compound extremes such as compound dry-hot events (CDHEs) have received more and more attention in the last two decades due to their more devastating impacts than those caused by droughts or heatwaves separately. A daily-scale CDHE index, i.e., compound dry-hot index daily (CDHId), based on the copula and conditional probability is proposed to identify dry and hot days to quantify the severity of CDHEs. Standard precipitation index (SPI), standard temperature index (STI), and CDHId are used to explore the spatial-temporal variations of droughts, heatwaves, and CDHEs in China from 1961 to 2020. Results show that CDHEs occurred more frequently after the period from the late 1970s to the early 1980s. Northeast China, Southwest China, and the Tibetan Plateau witnessed the most significant increases in CDHEs. Droughts were identified as the leading factor in 87% of CDHEs, indicating that CDHEs were more likely to be induced by antecedent dry conditions. The negative correlation between temperature and precipitation in the land-atmosphere feedback played a major role in the formation of CDHE at local and short-temporal scales. However, the annual variation of CDHE characteristics in multi-decades was dominated by heatwaves, with a more significant direct path coefficient than droughts over China. Overall, the increase and enhancement of CDHEs since the early 1980s were consistent with the temporal variation of global temperature. © 2023, The Authors. All rights reserved.

关键词： Drought

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Bioaugmentation with a lipid-degrading bacterial culture to enhance methane production from food waste anaerobic digestion: Effect on process performance, microbial dynamics, and lipid metabolism

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Chemical engineering Journal 2025年 518卷

作者： Dar, Rouf Ahmad Dai, Bitao Tsui, To-Hung Zhang, Xia Zhang, Dan Zhou, Pei Liu, Ronghou Zhang, Le Biomass Energy Engineering Research Centre Department of Resources and Environment School of Agriculture and Biology Shanghai Jiao Tong University 800 Dongchuan Road Shanghai200240 China Ministry of Science and Technology National Forestry and Grassland Administration 800 Dongchuan Rd. Shanghai200240 China Department of Engineering Science University of Oxford OxfordOX1 3PJ United Kingdom School of Agriculture and Biology Shanghai Jiao Tong University Key Laboratory of Urban Agriculture Ministry of Agriculture and Rural Affairs Bor S. Luh Food Safety Research Center Shanghai200240 China

In food waste anaerobic digestion (AD), lipids can hinder the AD process or cause system failure, despite their high methane production potential. Therefore, this study investigated the optimization of a lipid-degrading bacterial culture bioaugmentation dosage (1 %, 3 %, and 5 %) and addition frequency (2d, 4d, and 6d), to achieve stable AD with enhanced lipid biodegradation. Furthermore, the optimal conditions obtained were validated at the pilot scale. Bioaugmentation with Serratia sp. every two days (A1-2d) enhanced average methane production by 1.09-fold compared to the control, despite a 1.24-fold higher NH₄+-N concentration than the control (A0), along with a 1.50-fold higher soluble chemical oxygen demand (sCOD), and 5.34- and 1.15-fold higher concentrations of acetic acid and propionic acid, respectively. Metagenomic analysis revealed higher relative abundances of Acetomicrobium (1.20-fold), Defluviitoga (1.27-fold), Sphaerochaeta (1.35-fold), and an unclassified Eubacteriales (1.74-fold) genera in A1-2d compared to A0. Both acetoclastic and hydrogenotrophic methanogens were present, with Methanothrix and Methanosarcina comprising 77.13 % of total methanogens in A1-2d, which was a 1.09-fold higher than in A0. Lipid metabolism was enhanced in A1-2d, as evidenced by the increased relative abundance of the key lipid degradation genes lip (11.9-fold), acd (4.6-fold), paaF/echA (1.2-fold), fadA (1.8-fold), plc (7.0-fold), dgkA (2.2-fold), gldA (1.8-fold) and dhaM (2.4-fold), compared to A0. At the pilot scale, bioaugmentation of 1 % Serratia sp. every 2 days increased the average methane yield by 2.03-fold, confirming the bioaugmentation strategy's efficacy in improving food waste AD. Overall, bioaugmentation helped achieve the stable AD of food waste by enhancing hydrolysis, lipid degradation, and methane production. © 2025 Elsevier B.V.

关键词： Biodegradation

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Characteristics of Labile Organic Carbon Fractions Under Different Types of Subsidence Waterlogging Areas in the Coal Mining Area with High Ground Water Table: A Case Study in Xinglongzhuang Coal Mine, China

SSRN

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SSRN 2023年

作者： Fu, Yanhua Hu, Zhenqi Zhu, Qi Rong, Ying School of Economics and Management Tianjin Chengjian University Tianjin300384 China School of Environment Science and Spatial Informatics China University of Mining and Technology Xuzhou221116 China Chinese Research Academy of Environmental Sciences National Engineering Laboratory for Lake Pollution Control and Ecological Restoration State Environmental Protection Key Laboratory for Lake Pollution Control Beijing100012 China The Research Center of System and Industrial Technology Zhongyuan University of Technology Zhengzhou451191 China

The restoration of subsidence waterlogging areas has the potential to facilitate carbon accumulation in the coal mining areas with high ground water table. Nevertheless, the impact of restoration and management strategy on the soil organic carbon (SOC) and the labile organic carbon(LOC) have not been sufficiently demonstrated. In this study, SOC and LOC fractions, including light fraction organic carbon(LFOC), particulate organic carbon(POC), and dissolved organic carbon(DOC) within the 0-50cm profiles, were determined in the reference cropland(RC) and three types of subsidence waterlogging areas including aquaculture waterlogging area(AWA), deep waterlogging area(DWA) and shallow waterlogging area(SWA) in Xinglongzhuang Coal Mine, Shandong Province, China. Our results showed that compared with the reference cropland SOC and LOC decreased by 4.13%, 25.03%, and 77.91% in SWA, DWA, and AWA, respectively. The vital depletion was in the 0-10cm soil layer, which indicates that the recovery of total functional pools of SOC after subsidence and the succession of ecological systems takes a longer time. The liability of POC was highest among the three types of labile organic fractions which could indicate the mining subsidence triggered the soil redistribution and impact the carbon accumulation. With comparatively less interference on the soil profile, the liability of LFOC and POC decreased with soil depth, while DOC increased in DWA and SWA. And there was a large discrepancy in AWA, with the liability of LOC fractions fluctuating because of intensive engineering soil disturbance. Labile organic C fractions were closely associated and correlated with soil properties, especially TN and TP. Overall, the restoration and management have a vital impact on the soil organic carbon pool, it is suggested that shallow water, natural geomorphology-based topography, less soil disturbance, well development of vegetation communities, and continuous monitoring of soil and water properties

关键词： Subsidence

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