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Wetting challenges in treatment of raw textile wastewater by membrane distillation: A case study

Case Studies in Chemical and environmental engineering 2025年 11卷

作者： Rodrigues, Mariana E. Cucciniello, Raffaele Farinha, Andreia Vrouwenvelder, Johannes Fortunato, Luca Biological & Environmental Science & Engineering Division (BESE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Environmental Science & Engineering Program (EnSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Dipartimento di Chimica e Biologia Università di Salerno Via Papa Paolo Giovanni II Fisiciano SA 84100 Italy Department of Biotechnology Faculty of Applied Sciences Delft University of Technology Van der Maasweg 9 HZ Delft 2629 Netherlands Department of Civil Building and Environmental Engineering University of Napoli Federico II Via Claudio 21 Napoli 80125 Italy

This case study investigated the effectiveness of Direct Contact Membrane Distillation (DCMD) in treating real textile wastewater. Textile wastewater treatment presents a critical challenge in the field of environmental sustainability, requiring innovative approaches for its treatment to mitigate adverse impacts on ecosystems. DCMD emerges as a promising solution for the treatment and reuse of textile wastewater. However, the intricate composition of real textile wastewater represents a major bottleneck for the process, as the effectiveness of DCMD is influenced by numerous factors, complicating its application. In this study, experiments with an untreated sample demonstrate the detrimental impact of suspended solids on membrane performance. The application of simple pretreatment steps prior to DCMD, involving sedimentation and filtration, substantially enhanced the quality of the permeate, resulting in 100 % color removal, 99.99 % turbidity removal, and considerable removal rates for Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC). Nevertheless, wetting remained a significant issue, as evidenced by the persistence of commonly used volatile organic contaminants and surfactants in the textile industry detected within the permeate. The findings in this case study reinforce that DCMD holds promise for textile wastewater treatment but emphasize the necessity of pretreatment and wetting mitigation strategies to fully unlock its potential. This research offers crucial insights for future MD applications in addressing the complexities of textile wastewater treatment. © 2025 The Authors

关键词： Direct contact membrane distillation (DCMD) Industrial wastewater reuse Membrane wetting Optical coherence tomography (OCT) Pretreatment strategies Textile wastewater treatment Volatile organic contaminants

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High-Temperature Decomposition of Diisopropyl Methylphosphonate (DIMP) on Alumina: Mechanistic Predictions from Ab Initio Molecular Dynamics

arXiv

引用

arXiv 2022年

作者： Biswas, Sohag Wong, Bryan M. Department of Chemical & Environmental Engineering Materials Science & Engineering Program Department of Physics & Astronomy Department of Chemistry University of California-Riverside RiversideCA92521 United States

The enhanced degradation of organophosphorous-based chemical warfare agents (CWAs) on metal-oxide surfaces holds immense promise for neutralization efforts;however, the underlying mechanisms in this process remain poorly understood. We utilize large-scale quantum calculations for the first time to probe the high-temperature degradation of diisopropyl methylphosphonate (DIMP), a nerve agent simulant. Our Born-Oppenheimer molecular dynamics (BOMD) calculations show that the γ-Al2O3 surface shows immense promise for quickly adsorbing and destroying CWAs. We find that the alumina surface quickly adsorbs DIMP at all temperatures, and subsequent decomposition of DIMP proceeds via a propene elimination. Our BOMD calculations are complemented with metadynamics simulations to produce free energy paths, which show that the activation barrier decreases with temperature and DIMP readily decomposes on γ-Al2O3. Our first-principle BOMD and metadynamics simulations provide crucial diagnostics for sarin decomposition models and mechanistic information for examining CWA decomposition reactions on other candidate metal oxide surfaces. © 2022, CC BY.

关键词： Free energy

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Kombucha tea derived from papaya (Carica papaya L.) as a potential functional food: physicochemical parameters, biological activities, and sensory evaluation

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International Journal of Food science and Technology 2024年第10期59卷 7786-7794页

作者： Do, Anh Duy Nguyen, Le Bao Xuyen Pham, Dang Quoc Le, Thang Truong Leya, Mwense Phan Van, Thach Department of Biotechnology NTT Hi-tech Institute Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Department of Life Science College of Natural Sciences Hanyang University Seoul04763 Korea Republic of Faculty of Environmental and Food Engineering Institute of Applied Technology and Sustainable Development Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Smart Medicine and Health Informatics Program National Taiwan University Taipei City10617 Taiwan Biosafety Research Institute and Laboratory of Pathology College of Veterinary Medicine Jeonbuk National University Iksan54896 Korea Republic of

Fermented foods, such as kombucha, have gained popularity due to their rich content of beneficial bioactive compounds. Papaya leaves, known for their abundance of bioactive substances such as alkaloids, flavonoids, and phenolic compounds, have garnered attention for their potential to improve immune function by neutralising free radicals. This study investigates the suitability of papaya leaves and petioles as substrates for kombucha fermentation. Our findings indicate that papaya leaves and petioles were suitable substrates for kombucha fermentation, indicated by the SCOBY mass accumulation during fermentation. The gradual decrease in brix and pH values over a 14 days fermentation period corresponds to sugar metabolism and the accumulation of acetic acid. Additionally, fermentation increases total polyphenol (PPK: 250.07 ± 3.00 mg/L, PLK: 330.87 ± 15.56 mg/L) and total flavonoid content (PPK: 26.67 ± 6.31 mg/L, PLK: 34.44 ± 5.55 mg/L). Moreover, papaya-derived kombucha demonstrates enhanced antibacterial properties and inhibits ⍺-amylase linked to diabetes. Sensory evaluations confirm that papaya kombucha achieves a well-balanced and appealing sensory profile, catering to diverse palates. In summary, papaya leaves and petiole exhibit promise as substrates for kombucha production, offering elevated nutritional value and potential health advantages. © 2024 Institute of Food, science and Technology (IFSTTF).

关键词： Substrates

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Impacts of Faculty Development on Interdisciplinary Undergraduate Teaching and Learning in the Food-Energy-Water Nexus

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Journal of College science Teaching 2022年第6期51卷 66-74页

作者： Sommers, Amie S. White, Holly Dauer, Jenny M. Forbes, Cory STEM education specialist in the Engineering and Computing Education Core College of Engineering University of Nebraska-Lincoln United States Ecology and Environmental Sciences program at the University of Maine United States School of Natural Resources at the University of Nebraska-Lincoln United States Department of Curriculum and Instruction Science Education STEM Education Research Collaboratorium and Resource Center College of Education University of Texas Arlington United States

To support undergraduate instruction and learning outcomes (i.e., systems thinking and decision-making in interdisciplinary contexts) grounded in the Food-Energy-Water Nexus (FEWNexus), we implemented a multiyear faculty development program around a new minor. In this article, we build on a previous study to investigate teaching in FEW Nexus minor courses, as well as student outcomes before and after participation in the faculty development program. We analyzed video recordings of courses to identify teaching style and scored pre- and postcourse student assessments of decision-making and systems thinking quantitatively. Post-program teaching was more student centered (50%) than pre-program (37.5%;p = 1.9e^-6). Faculty who taught courses with longer class periods incorporated more active learning than in short class periods (pre: p = 2.2e^-16;post: p = 2.2e^-16). Despite changes in instruction, we did not observe changes in decision-making and systems thinking outcomes. However, results indicate that providing faculty with resources and time can facilitate implementation of best practices and that further support and research are needed to connect these practices with positive outcomes. © 2022 National science Teaching Association.

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Characterization of VOCs during diesel oil composting process

引用

Bioresource Technology Reports 2023年 22卷

作者： Lin, Tachen Kuo, Shulung Hussain, Adnan Chen, Zhigui Huang, Manlin Lin, Chitsan School of Food and Chemical Engineering Liuzhou Institute of Technology Guangxi Liuzhou545000 China Kelee Environmental Consultants Corporation Kaohsiung City806040 Taiwan Ph.D. Program of Aquatic Science and Technology National Kaohsiung University of Science and Technology Kaohsiung811213 Taiwan Continental Water Engineering Corporation Taipei City103018 Taiwan School of Food Science and Engineering Beibu Gulf University Guangxi Qinzhou535011 China Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung City811213 Taiwan

By composting kitchen waste, deisel-contaminated soil was treated and volatile organic compound (VOC) emissions were assessed. Composting kitchen waste reduces contamination volume due to gas emissions. An aerobic treatment period of 12 days was conducted for the measurements of VOC emissions from different phases, such as gaseous, solid, and leachate, were conducted throughout the experiment. The results show that VOC concentrations were high during the mesophilic phase and reduced with increasing temperature during the composting period. It has been observed that at least 314 VOCs have been detected during the mesophilic, thermophilic, and cooling phases. Compost odor was mainly caused by NH3, methanethiol, carbon disulfide, dimethyl sulfide, and dimethyl disulfide, and most of these compounds appeared in thermophilic phase. Furthurmore, emissions of VOCs from composting kitchen waste reduces total diesel concentration in the soil to achieve a green and clean environment. © 2023 Elsevier Ltd

关键词： Gas emissions

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Effect of Carbon Nanotubes on Chloride Diffusion, Strength, and Microstructure of Ultra-High Performance Lightweight Concrete

SSRN

引用

SSRN 2024年

作者： Rafieizonooz, Mahdi Jay Kim, Jang-Ho Kim, Jin-Su Jo, Jae-Bin Khankhaje, Elnaz School of Civil and Environmental Engineering Yonsei University Yonsei-ro 50 Seodaemun-gu Seoul03722 Korea Republic of Architectural Engineering Program School of Architecture Seoul National University of Science and Technology 232 Gongneung-ro Gongneung-dong Nowon-gu Seoul01811 Korea Republic of

The study delved into the integration of carbon nanotubes (CNTs) in Ultra-High Performance Lightweight Concrete (UHPLC), exploring aspects such as mechanical properties, microstructure analysis, accelerated chloride penetration, and life service prediction. A dispersed CNT solution (0.025 to 0.075 wt%) was employed, along with a superplasticizer, to ensure high flowability in the UHPC slurry. Experimental findings unveiled that an increased concentration of CNT in CNT1 (0.025%) and CNT2 (0.05%) blends led to a marginal improvement in compressive strength compared to the control mix. Conversely, the CNT3 (0.075%) mixture exhibited a reduction in compressive strength with a rising CNT content as an admixture. SEM analysis depicted that the heightened concentration of CNTs as an admixture induced the formation of nanoscale bridges within the concrete matrix. Ponding test results indicated that, for all samples, the effective chloride transport coefficient remained below the standard limitation of 1.00 * E-12 m2/s, signifying acceptable performance in the ponding test for all samples. The life service prediction outcomes affirmed that, across various environmental scenarios, CNT1 and CNT2 mixtures consistently demonstrated superior performance compared to all other mixtures. © 2024, The Authors. All rights reserved.

关键词： Carbon nanotubes

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New insights into the interactions between Pb(II) and fruit waste biosorbent

引用

CHEMOSPHERE 2022年第Part1期303卷 135048页

作者： Wang, Qian Wang, Yunlong Tang, Junjie Yang, Zi Zhang, Li Huang, Xiaowu [a]Department of Physics Chemistry and Pharmacy University of Southern Denmark 5230 Odense M Denmark [b]Key Laboratory of Protected Horticulture Engineering in Northwest Ministry of Agriculture College of Horticulture Northwest A&F University Yangling Shaanxi 712100 China [c]Environmental Science and Engineering Program Guangdong Technion-Israel Institute of Technology 241 Daxue Road Shantou Guangdong 515063 China [d]State Key Laboratory of Crop Stress Biology in Arid Areas College of Life Sciences Northwest A&F University Yangling Shaanxi 712100 China [e]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering Beijing University of Technology Beijing 100124 China

Fruit waste is a sustainable biosorbent for heavy metal removal from wastewater. Elucidation of adsorption mechanism is imperative for the process control and development of effective adsorbents. In this study, watermelon rind (WR) exhibited selective and efficient Pb(II) adsorption with a maximum uptake of 230.5 mg/g at pH 5.0. The WR-packed bed column showed high Pb(II) uptake and robust durability over 10 adsorption desorption cycles with long breakthrough time of 8-13 h (89-144 bed volume), and 95% of sequestered Pb (II) was rapidly desorbed in 1-2 h by 0.05 M HCl. Spectroscopic characterization by FTIR and XPS identified hydroxyl, carboxyl, amine, and ether groups as the binding sites for Pb(II) via the binding force of complexation. Physicochemical analysis showed that ion exchange with Mg2+ and Ca2+ accounted for 19% of Pb(II) adsorption by WR;electrostatic attraction and microprecipitation jointly contributed. Quantum chemistry simulation verified the interactions between Pb(II) and binding sites and revealed carboxyl was the preferential functional group. The findings corroborate the applicability of WR in scale-up Pb(II) removal/recovery from wastewater and elaborate the mechanisms of Pb(II) adsorption by the WR biosorbent. This also provides insights into the behavior of heavy metals in other liquid/solid interfaces.

关键词： Fruit waste Heavy metal Adsorption mechanism Column study Circular economy

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The Comparison of Three environmental Metrics for Cr, Pb, and Zn in the Agricultural Region of the Mid-Continent of USA

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Journal of Geoscience and Environment Protection 2021年第4期9卷 147-165页

作者： Almesleh A. A. Najwah Goodell Philip Program of Environmental Science & Engineering University of Texas El Paso USA Department of Geological Science University of Texas El Paso USA

The chemical and physical properties of soil are critical factors that affect human health. The current geochemical study is designed to evaluate the concentrations of heavy metals (Cr, Pb, and Zn) in the soil in Iowa (IA), Kansas (KS), and Nebraska (NE). The basic descriptive statistical results suggest that there are some limited levels of the heavy metals in the soils that come from anthropogenic inputs. The results of three environmental metrics, the enrichment factor (EF), geoaccumulation (Igeo), and potential ecological risk (PERI), have been calculated, evaluated, and compared. EF values show that soils contain minimal enrichment of Cr, Pb, and Zn in the study area. In addition, PERI values presented low risk with Cr, Pb, and Zn. However, Igeo values showed no contamination of Cr, Pb, and Zn in the study area. These results suggest that the elevated levels of these heavy metals are dominated by the historic agricultural inputs derived from long-term anthropogenic applications, especially in the regions with extensive human activities, which means that soil is the sink for heavy metals released into the environment.

关键词： Chemical Elements Enrichment Factor Geo Accumulation Potential Ecological Risk Geochemical Maps

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Cufe2o4@Ncnts-Functionalized Ceramic Microfiltration Membrane for Antibiotic Oxidation and Fouling Control Via Heterogeneous Electro-Fenton Reaction

SSRN

引用

SSRN 2024年

作者： Zhang, Zixin Huang, Guohe Li, Yongping Yao, Yao Zhang, Peng Chen, Xiujuan Ren, Shaojie Luo, Yifei Zhang, Yuanzheng State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China State Key Joint Laboratory of Environmental Simulation and Pollution Control China-Canada Center for Energy Environment and Ecology Research UR-BNU School of Environment Beijing Normal University Beijing100875 China Environmental Systems Engineering Program University of Regina ReginaSKS4S 0A2 Canada Institute for Energy Environment and Sustainable Communities University of Regina ReginaS4S 0A2 Canada Department of Civil Engineering The University of Texas at Arlington ArlingtonTX United States Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and Engineering Shandong University Qingdao266237 China College of Environmental Science and Engineering North China Electric Power University Beijing102206 China

Herein, we reported an electrocatalytic ceramic microfiltration membrane functionalized with CuFe2O4 nanoparticles supported by nitrogen-doped carbon nanotubes (NCNTs). The synergistic catalysis between Fe and Cu induced a continuous ·OH generation. The active Fe(II) and Cu(I) sites decomposed the in-situ generated H2O2 into ·OH. The electron transfer from the external circuit and Cu(I) to Fe(III) drove the regeneration of Fe(II). The interfacial electron transfer from CuFe2O4 to NCNTs decreased the electron density of Fe and Cu, thus facilitating the redox cycles of Fe(III)/Fe(II) and Cu(II)/Cu(I). Furthermore, the Fe and Cu sites at the interface of CuFe2O4 and NCNTs displayed a superior ability to non-interface sites in producing ·OH. At near-neutral pH, the electrocatalytic membrane delivered excellent tetracycline removal kinetics (0.0134 min-1) and significantly alleviated the organic fouling occurring on the membrane. These findings shed new light on the development of new-generation membranes with catalytic oxidation capabilities for water treatment. © 2024, The Authors. All rights reserved.

关键词： Antibiotics

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Anchorene,a carotenoid-derived growth regulator,modulates auxin homeostasis by suppressing GH3-mediated auxin conjugation

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Journal of Integrative Plant Biology 2024年第11期66卷 2490-2504页

作者： Danping Ke Yinpeng Xie Haipeng Li Liqun Hu Yi He Chao Guo Yahui Zhai Jinggong Guo Kun Li Zongyan Chu Junli Zhang Xuebin Zhang Salim Al-Babili Kai Jiang Yuchen Miao Kun-Peng Jia National Key Laboratory of Cotton Bio-breeding and Integrated Utilization State Key Laboratory of Crop Stress Adaptation and ImprovementHenan Joint International Laboratory for Crop Multi-Omics ResearchSchool of Life SciencesHenan UniversityKaifeng 450046China Sanya Institute of Henan University Sanya 572025China State Key Laboratory for Crop Stress Resistance and High-Eﬁciency Production/Shaanxi Key Laboratory of Apple College of HorticultureNorthwest A&F UniversityYangling 712100China Institute of Plant and Food Science Department of BiologySchool of Life SciencesSouthern University of Science and Technology(SUSTech)Shenzhen 518055China The BioActives Lab Center for Desert AgricultureKing Abdullah University of Science and TechnologyThuwal 23955-6900Kingdom of Saudi Arabia Plant Science Program Biological and Environmental Science and Engineering(BESE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia Laboratory of Cell Metabolism and Diseases State Key Laboratory of Conservation and Utilization of Bio-Resources in YunnanCenter for Life SciencesSchool of Life SciencesYunnan UniversityKunming 650500China

Anchorene,identified as an endogenous bioactive carotenoid-derived dialdehyde and diapocarotenoid,affects root development by modulating auxin ***,the precise interaction between anchorene and auxin,as well as the mechanisms by which anchorene modulates auxin levels,remain largely *** this study,we conducted a comparative analysis of anchorene's bioactivities alongside auxin and observed that anchorene induces multifaceted auxin-like *** genetic and pharmacological examinations,we revealed that anchorene's auxin-like activities depend on the indole-3-pyruvate-dependent auxin biosynthesis pathway,as well as the auxin inactivation pathway mediated by Group II Gretchen Hagen 3(GH3)proteins that mainly facilitate the conjugation of indole-3-acetic acid(IAA)to amino acids,leading to the formation of inactivated storage *** measurements indicated that anchorene treatment elevates IAA levels while reducing the quantities of inactivated IAA–amino acid conjugates and ox *** sequencing further revealed that anchorene triggers the expression of numerous auxin-responsive genes in a manner reliant on Group II ***,our in vitro enzymatic assays and biolayer interferometry(BLI)assay demonstrated anchorene's robust suppression of GH3.17-mediated IAA conjugation with ***,our findings highlight the significant role of carotenoid-derived metabolite anchorene in modulating auxin homeostasis,primarily through the repression of GH3-mediated IAA conjugation and inactivation pathways,offering novel insights into the regulatory mechanisms of plant bioactive apocarotenoids.

关键词： Anchorene auxin conjugation carotenoid-derived bioactive apocarotenoid Gretchen Hagen 3 root development

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