1
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Bui TBC, Iida D, Kitamura Y, Kokawa M. Utilization of multiple-dilution fluorescence fingerprint facilitates prediction of chemical attributes in spice extracts. Food Chem 2024; 438:138028. [PMID: 38091861 DOI: 10.1016/j.foodchem.2023.138028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 11/14/2023] [Indexed: 12/28/2023]
Abstract
Fluorescence Fingerprint (FF) is a powerful tool for rapid quality assessment of various foods and plant-derived products. However, the conventional utilization of FFs measured at a single dilution level (DL) to substitute chemical analyses is extremely challenging, especially for multicomponent materials like spice extracts because fluorescence intensity and concentration widely differ between components, with complex phenomena like inner filter effects. Here, we proposed a new strategy to use the meta-data comprised of FFs measured at multiple DLs with machine learning to estimate common chemical attributes including total polyphenol and flavonoid contents, and antioxidant abilities. This strategy achieved more consistently satisfactory performance in estimation of all chemical attributes of spice extracts compared to using a single DL. Hence, the workflow employed in this study is expected to serve as an alternative method to quickly evaluate the chemical quality of spice extracts, as well as other plant products and food materials.
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Affiliation(s)
- Thi Bao Chau Bui
- Graduate School of Science and Technology, University of Tsukuba, Ibaraki, Japan; Institute of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan; Japan Society for the Promotion of Science (PD), Ibaraki, Japan
| | - Daiki Iida
- Graduate School of Science and Technology, University of Tsukuba, Ibaraki, Japan
| | - Yutaka Kitamura
- Institute of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Mito Kokawa
- Institute of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan.
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2
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Nakaya Y, Tomita A, Yamamura H. Solid-phase fluorescence: Reproducibility and comparison with the solution states. Talanta 2024; 270:125566. [PMID: 38141468 DOI: 10.1016/j.talanta.2023.125566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 12/14/2023] [Accepted: 12/17/2023] [Indexed: 12/25/2023]
Abstract
Solid-phase fluorescence excitation-emission matrix (SPF-EEM) spectroscopy has potential for non-extractive, non-destructive, and non-contact analytical measurements of powder and solid-state samples, as well as front-face EEM spectroscopy for suspensions of high optical density. However, as there is no unified measurement method for SPF spectroscopy, comparing samples measured in different research fields is difficult. Therefore, this study designs a cell that can be created by a 3D printer and examines reproducibility on measuring fluorescent powders. The developed cell is applied to proteins (ovalbumin, BSA, gliadin, gluten, powdered collagen, casein), amino acids (tryptophan, tyrosine, and phenylalanine), soybean ingredients (daidzein, and genistein), and fluorescent chemicals (rhodamine B, fluorescein sodium salt, pyrene, and quinine sulfate dihydrate) and their spectra are compared with those in the solution states. When samples are refilled into the cell three times, the cell exhibits high reproducibility in terms of fluorescence peak wavelength and intensity. The solid proteins exhibit peaks attributed to the fluorescent amino acid residues, and broad peaks which are not detected for the proteins in the solution states. Powdered rhodamine B and fluorescein sodium salt do not exhibit fluorescence, possibly due to the inner-filter effect (IFE). Some non-colored molecules also exhibit loss of fluorescence or a remarkable difference between the solid and solution states, possibly due to the interaction of the fluorescent structure with the surrounding local environment, similar to the solvent effect, which is possibly affected by the molecular proximity, three-dimensional structure, and moisture absorption capacity.
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Affiliation(s)
- Yuki Nakaya
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North-13, West-8, Kita-ku, Sapporo, 060-8628, Japan.
| | - Ayaka Tomita
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Hiroshi Yamamura
- Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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3
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Yu N, Bai J, Cao H, Yao H, Shi G, Yuan H, Xu Z, Luo F, Li M, Si R. Electrocatalysis coupled heterogeneous electro-Fenton like treatment of coal gasification wastewater using tourmaline as catalyst: process parameters and response surface. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:20207-20221. [PMID: 38369660 DOI: 10.1007/s11356-024-32457-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/08/2024] [Indexed: 02/20/2024]
Abstract
Coal gasification technology is essential for realizing clean and efficient conversion of coal, as well as for reducing carbon emissions. However, coal gasification technology is accompanied by a large amount of coal gasification wastewater that is biodegradable. In this work, tourmaline was applied as a catalyst in electro-Fenton like process for treating coal gasification wastewater. The optimal applied parameters of coal gasification wastewater were investigated as follows: current density of 90 mA cm-2, tourmaline dosage of 8 g L-1, electrode gap of 1 cm, and temperature at 25 °C; the COD removal ratio reached 91.24% after 240-min treatment. In addition, the current density and tourmaline dosage were further optimized by response surface method. The result was about current density with 82.4 mA cm-2 and catalyst with 7.57 g L-1; the predicted COD removal efficiency was 86.91%. Under the optimal parameters the actual COD removal efficiency was 88.25% a little high than the predicted value. To explore the reusability of tourmaline as Fenton reaction catalyst, five cycles of experiments were carried out. The result demonstrated that tourmaline could be used as catalyst for treating coal gasification wastewater by electro-Fenton like process.
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Affiliation(s)
- Naichuan Yu
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China.
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China.
| | - Junxue Bai
- School of Biological and Environmental Engineering, Tianjin Vocational Institute, Tianjin, 300410, China
| | - Hanfei Cao
- College of Food Science& Nutritional Engineering, China Agricultural University, Beijing, 100091, China
| | - Hao Yao
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Guangyao Shi
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Hao Yuan
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Zhilong Xu
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China
| | - Fuchen Luo
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Mingyu Li
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
| | - Rongmei Si
- Tianjin College, University of Science and Technology Beijing, Tianjin, 301830, China
- Tianjin Key Laboratory of Nano-Optoelectronic Display Materials and Components, Tianjin, 301830, China
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4
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Tan X, Zeng S, Chen Z, Lv M, Tang X, He X, Chen Y, Wan Y, Zhang J. Synergistic effect of organic matter-floc size-bound water and multifactorial quantitative model of optimal reagent demand in sewage sludge conditioning process prior to dewatering. WATER RESEARCH 2024; 251:121108. [PMID: 38244300 DOI: 10.1016/j.watres.2024.121108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/20/2023] [Accepted: 01/04/2024] [Indexed: 01/22/2024]
Abstract
The high amount of densely hydrated organic substance present in sewage sludge impedes its filterability, thus restricting sludge disposal. Although chemical conditioning can facilitate filtration, the diverse sludge properties complicate the quantitative control of conditioning process. Investigating how to accurately quantify the optimal reagent demand (ORD) based on the critical physicochemical properties of the target sludge is an effective way to address the current issue. This study focused on the sewage and stockpiled sludge with varying properties, and their ORD under different chemical conditioning. The results showed that organic content, floc size, and bound water synergistically influenced conditioning process. The quantitative models were established between their coupling indicators and ORD, with coupling indicators including the ratio of organic content to floc size, the ratio of flow viscosity to floc size, and the ratio of the product of organic content and bound water to floc size. The linear correlation of the coupling indicator with ORD was higher than that of the traditional single-factor indicator. Furthermore, the inherent filterability of the sludge was somewhat separate from the adjustability of its filtration. A "dual-system" impact model was proposed to characterized the conditioning and filtration processes. These results provide theoretical guidance for the quantitative regulation of conditioning and filtration processes of sludge with complex characteristics.
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Affiliation(s)
- Xun Tan
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR China
| | - Sidong Zeng
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR China.
| | - Zhong Chen
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR China
| | - Mingquan Lv
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR China
| | - Xiaoya Tang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR China
| | - Xingxing He
- State Key Laboratory of Hydro-science and Engineering, Tsinghua University, Beijing 100084, PR China
| | - Yijun Chen
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, PR China
| | - Yong Wan
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, PR China
| | - Jingping Zhang
- Chongqing Yulanze Environmental Protection Technology Co, Chongqing, 408000, PR China
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5
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Yu H, Huang H, Zhong L, Wu S, Yang H, Rong H, Liang H, Qu F, Ma J. Evaluation of Front-Face Fluorescence for Assessing Cyanobacteria Fouling in Ultrafiltration. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:17649-17658. [PMID: 37910031 DOI: 10.1021/acs.est.3c07397] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Cyanobacteria fouling in ultrafiltration (UF) drinking water treatment poses a significant threat to the stability and sustainability of the process. Both phycocyanin found in cyanobacteria and the polymer membrane exhibit strong fluorescence, which could be readily detected using front-face excitation-emission matrix (FF-EEM) spectroscopy. In this study, FF-EEM was employed for the nondestructive and in situ characterization of algae fouling evolution in UF, while also analyzing fouling mechanisms and reversibility. The results indicated that phycocyanin fluorescence on the membrane surface showed a linear correlation with the specific algal cell count on the membrane surface before reaching saturation. As fouling progressed, membrane fluorescence decreased, which was associated with the extent of the surface coverage on the membrane. The plateau in membrane fluorescence indicated full coverage, coinciding with the cake filtration mechanism, cake compression, and deterioration of fouling reversibility. These findings highlight the promise of FF-EEM as a valuable tool for monitoring and evaluating fouling of cyanobacteria in UF systems.
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Affiliation(s)
- Huarong Yu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Huan Huang
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Lin Zhong
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Shihua Wu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Haiyang Yang
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Fangshu Qu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
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6
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Park G, Jang M, Han MS. A fluorous-tag-assisted fluorescent probe for simple and selective detection of hydrogen sulfide: application for turbid dyeing solutions. RSC Adv 2023; 13:32137-32142. [PMID: 37928855 PMCID: PMC10620642 DOI: 10.1039/d3ra06740h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 10/20/2023] [Indexed: 11/07/2023] Open
Abstract
Accurate hydrogen sulfide (H2S) detection has attracted much attention because its toxicity may affect aquatic environments and human health. However, recognizing H2S levels by conventional fluorescent probes in turbid wastewater has been challenging because the opaque environment interferes with their photophysical properties. To overcome this limitation, a fluorous-tagging strategy can be used for the development of fluorescent sensors to detect H2S in turbid solutions. The use of fluorescent probe assisted with fluorous-tag allowed for easy isolation of the probe using polytetrafluoroethylene (PTFE) material, while disturbing species were eliminated through a simple aqueous wash. This approach enabled the fluorescent probe to effectively quantify H2S, even in opaque solutions containing organic dyes that could interfere with fluorescence emission.
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Affiliation(s)
- Geonwoo Park
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST) 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
| | - Mincheol Jang
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST) 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
| | - Min Su Han
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST) 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
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7
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Carpes VM, Rubert A, Graciola S, Barbosa Brião V, Hemkemeier M. Hybrid electrolysis and membranes system for apple packing houses water treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:677-693. [PMID: 37578882 PMCID: wst_2023_228 DOI: 10.2166/wst.2023.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
The apple industry uses high flows of potable quality water to transport and clean the apple, which is regularly contaminated. Thus, it is necessary to implement an efficient water treatment system during the industrial process, providing reductions in the intake and release flows. A hybrid system was developed by applying the electrolytic treatment by electrocoagulation using a batch process (Step 1) and a continuous process (Step 2), followed by a microfiltration membrane separation (MSP) process (Step 3). The optimal conditions for removal of organic matter, chemical oxygen demand, total suspended solids (TSS), turbidity, color, and fungi obtained in Step 1 were a hydraulic detention time of 40 min, stirring at 40 rpm, current density of 20 A/m2, pH of 8.00, and temperature of 10 °C. These findings led to a successful implementation in Step 2, which evolved into Step 3, where tests in the combined continuous electrolytic reactor together with MSP showed significant removal rates, notably reaching up to 54% organic matter (OM) removal, 72% chemical oxygen demand (COD) removal, 83% TSS removal, 92% haze and color removal, and 100% mildew removal. The hybrid system proved to be a promising alternative for implementation in the processing industry, minimizing environmental impacts and costs.
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Affiliation(s)
- Vanessa Maria Carpes
- Graduate Program in Food Science and Technology, University of Passo Fundo, BR 285, CEP 99001-970, Passo Fundo, RS, Brazil E-mail:
| | - Aline Rubert
- Graduate Program in Food Science and Technology, University of Passo Fundo, BR 285, CEP 99001-970, Passo Fundo, RS, Brazil
| | - Samarah Graciola
- Undergraduate Program in Chemical Engineering, University of Passo Fundo, BR 285, CEP 99001-970, Passo Fundo, RS, Brazil
| | - Vandré Barbosa Brião
- Graduate Program in Food Science and Technology, University of Passo Fundo, BR 285, CEP 99001-970, Passo Fundo, RS, Brazil
| | - Marcelo Hemkemeier
- Graduate Program in Food Science and Technology, University of Passo Fundo, BR 285, CEP 99001-970, Passo Fundo, RS, Brazil
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8
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Yang H, Liu Q, Shu X, Yu H, Rong H, Qu F, Liang H. Simultaneous ammonium and water recovery from landfill leachate using an integrated two-stage membrane distillation. WATER RESEARCH 2023; 240:120080. [PMID: 37257292 DOI: 10.1016/j.watres.2023.120080] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/24/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023]
Abstract
Resources recovery from landfill leachate (LFL) has been attracting growing attention instead of merely purifying the wastewater. An integrated two-stage membrane distillation (ITMD) was proposed to simultaneously purify LFL and recover ammonia in this study. The results showed that organics could be always effectively rejected by the ITMD regardless of varying feed pH, with COD removal higher than 99%. With feed pH increased from 8.64 to 12, the ammonia migration (50-100%) and capture (36-75%) in LFL were considerably enhanced, boosting the separated ammonia enrichment to 1.3-1.7 times due to the improved ammonium diffusion. However, the corresponding membrane flux of the first MD stage decreased from 13.7 to 10.5 L/m2·h. Elevating feed pH caused the deprotonation of NOM and its binding with inorganic ions, constituting a complex fouling layer on the membrane surface in the first MD stage. In contrast, the membrane permeability and fouling of the second MD were not affected by feed pH adjustment because only volatiles passed through the first MD. More importantly, it was estimated that ITMD could obtain high-quality water and recover high-purity ammonium from LFL with relatively low ammonium concentration at an input cost of $ 2-3/m3, which was very competitive with existing techniques. These results demonstrated that the ITMD can be a valuable candidate strategy for simultaneous water purification and nutrient recovery from landfill leachate.
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Affiliation(s)
- Haiyang Yang
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Qinsen Liu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Xinying Shu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Huarong Yu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Fangshu Qu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China.
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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9
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Yu H, Yang H, Wei G, Mameda N, Qu F, Rong H. UV/Fe(II)/S(IV) Pretreatment for Ultrafiltration of Microcystis aeruginosa-Laden Water: Fe(II)/Fe(III) Triggered Synergistic Oxidation and Coagulation. MEMBRANES 2023; 13:membranes13050463. [PMID: 37233524 DOI: 10.3390/membranes13050463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 04/17/2023] [Accepted: 04/23/2023] [Indexed: 05/27/2023]
Abstract
Ultrafiltration (UF) has been proven effective in removing algae during seasonal algal blooms, but the algal cells and the metabolites can induce severe membrane fouling, which undermines the performance and stability of the UF. Ultraviolet-activated sulfite with iron (UV/Fe(II)/S(IV)) could enable an oxidation-reduction coupling circulation and exert synergistic effects of moderate oxidation and coagulation, which would be highly preferred in fouling control. For the first time, the UV/Fe(II)/S(IV) was systematically investigated as a pretreatment of UF for treating Microcystis aeruginosa-laden water. The results showed that the UV/Fe(II)/S(IV) pretreatment significantly improved the removal of organic matter and alleviated membrane fouling. Specifically, the organic matter removal increased by 32.1% and 66.6% with UV/Fe(II)/S(IV) pretreatment for UF of extracellular organic matter (EOM) solution and algae-laden water, respectively, while the final normalized flux increased by 12.0-29.0%, and reversible fouling was mitigated by 35.3-72.5%. The oxysulfur radicals generated in the UV/S(IV) degraded the organic matter and ruptured the algal cells, and the low-molecular-weight organic matter generated in the oxidation penetrated the UF and deteriorated the effluent. The over-oxidation did not happen in the UV/Fe(II)/S(IV) pretreatment, which may be attributed to the cyclic redox Fe(II)/Fe(III) coagulation triggered by the Fe(II). The UV-activated sulfate radicals in the UV/Fe(II)/S(IV) enabled satisfactory organic removal and fouling control without over-oxidation and effluent deterioration. The UV/Fe(II)/S(IV) promoted the aggregation of algal foulants and postponed the shift of the fouling mechanisms from standard pore blocking to cake filtration. The UV/Fe(II)/S(IV) pretreatment proved effective in enhancing the UF for algae-laden water treatment.
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Affiliation(s)
- Huarong Yu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Haiyang Yang
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Guangmei Wei
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Naresh Mameda
- Department of Engineering Chemistry, College of Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram 522303, India
| | - Fangshu Qu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
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10
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Dinesha BL, Hiregoudar S, Nidoni U, Ramappa KT, Dandekar AT, Ganachari SV. Adsorption modelling and fixed-bed column study on milk processing industry wastewater treatment using chitosan zinc-oxide nano-adsorbent-coated sand filter bed. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:37547-37569. [PMID: 36574133 DOI: 10.1007/s11356-022-24873-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 12/15/2022] [Indexed: 06/18/2023]
Abstract
This study aims to develop a chitosan-zinc oxide nano-adsorbent-coated sand (CZOCS) filter bed for getting rid of milk processing industry wastewater (MPIW) in a safe way. Chitosan zinc oxide nano-adsorbent (CZnO) of 88.35 ± 2.89 d.nm size was used to coat naturally available sand through a calcination process at 200 °C for a heating rate of 5 °C/min. The characteristics of the diffraction peaks and functional groups are attributed to the nature of CZnO loading on the sand surface. The increase in breakthrough and exhaustion times is caused by the biological oxygen demand (BOD) and chemical oxygen demand (COD) of influent having more time to interact with the adsorbent as bed height increases, resulting in higher reduction efficiencies. Lower bed heights (10 cm) which saturate faster than higher bed heights (40 cm) result in a shorter mass transfer time. Adsorption capacity at the 95% column exhaustion point increased from 611.04 to 1089.63 mg/g for BOD and from 4512.29 to 5600.81 mg/g for COD. Different kinds of kinetic models have been used to forecast breakthrough curves employing experimental data. Statistical and error function parameters were used to choose the best-fit model. Among the models investigated, the Thomas model was shown to be the best-fit with the highest R-square values of 0.9942 and 0.9939. The CZOCS has high reusability and could be used for up to six cycles of organic pollutant adsorption. Aside from that, novel CZOCS could be used to clean real MPIW, and making it one of the most promising adsorbents.
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Affiliation(s)
| | - Sharanagouda Hiregoudar
- Centre for Nanotechnology, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, 584 104, India
| | - Udaykumar Nidoni
- Department of Processing and Food Engineering, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, 584 104, India
| | - Kotrappa Thowdur Ramappa
- Department of Processing and Food Engineering, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, 584 104, India
| | - Anilkumar T Dandekar
- College of Agriculture, Mandya, University of Agricultural Sciences, Bangalore, 571 401, India
| | - Sharanabasava V Ganachari
- Centre for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580031, India
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11
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Yan Z, Zhu Z, Chang H, Fan G, Wang Q, Fu X, Qu F, Liang H. Integrated membrane electrochemical reactor-membrane distillation process for enhanced landfill leachate treatment. WATER RESEARCH 2023; 230:119559. [PMID: 36608523 DOI: 10.1016/j.watres.2022.119559] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/19/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Treatment of recalcitrant landfill leachate (LFL) induces huge energy consumption and carbon emissions due to its complex composition. Although membrane distillation (MD) exhibits good potential in LFL treatment with waste heat utilization, membrane fouling and ammonia rejection are still the major problems encountered that hinder its application. Herein, membrane electrochemical reactor (MER) was coupled with MD for simultaneous membrane fouling control and resource recovery. LFL pretreatment with membrane-less electrochemical reactor (EO) and without pretreatment were also purified by MD for comparison. Results showed that the MER-MD system rejected almost all CODCr, total phosphorus, metal salts, and ammonia nitrogen (increased by 33.5%-43.5% without chemical addition), and recovered 31% of ammonia nitrogen and 48% of humic acid in the raw LFL. Owing to the effective removal of hardness (61%) and organics (77%) using MER, the MER-MD system showed higher resistance to the membrane wetting and fouling, with about 61% and 14% higher final vapor flux than those of the MD and EO-MD systems, respectively, and the pure water flux could be fully recovered by alkaline solution cleaning. Moreover, SEM-EDS, ATR-FTIR and XRD characterization further demonstrated the superiority of the MD membrane fouling reversibility of the MER-MD system. Energy consumption and carbon emissions analysis showed that the MER-MD system reduced the total energy consumption/carbon emissions by ∼20% and ∼8% compared to the MD and EO-MD systems, respectively, and the ammonia nitrogen recovered by MER could offset 8.25 kg carbon dioxide equivalent. Therefore, the introduction of MER pretreatment in MD process would be an option to decrease energy consumption and reduce carbon emissions for MD treatment of LFL.
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Affiliation(s)
- Zhongsen Yan
- College of Civil Engineering, Fuzhou University, Fujian 350116, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian 350002, China; State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Xiamen 361101, China
| | - Zhengshi Zhu
- College of Civil Engineering, Fuzhou University, Fujian 350116, China
| | - Haiqing Chang
- MOE Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610207, China
| | - Gongduan Fan
- College of Civil Engineering, Fuzhou University, Fujian 350116, China.
| | - Qiankun Wang
- State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Xiamen 361101, China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian 350002, China
| | - Fangshu Qu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China.
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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12
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Lingamurthy DB, Hiregoudar S, Nidoni U, Ganachari SV, Patil VB, Hiremath V. Adsorptive removal of organic pollutants from milk-processing industry effluents through chitosan-titanium dioxide nanoadsorbent-coated sand. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:24101-24119. [PMID: 36333637 DOI: 10.1007/s11356-022-23854-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Milk-processing industry effluent (MPIE) poses severe problems for aquatic and environmental systems, especially in the South Asian region. Therefore, its treatment is of great interest. This study deals with the investigation of chitosan titanium dioxide nanoadsorbent (CTiO2) coated onto sand particles via calcination that are used to remove the emerging pollutants. The adsorptive properties of these developed adsorbents are compared with those of the nascent sand without coating as well as with the chitosan titanium dioxide nanoadsorbent coated sand (CTiO2-CS). Batch adsorption experiments were performed to investigate the percent reduction efficiency (%RE) of organic pollutants in terms of biological oxygen demand (BOD) and chemical oxygen demand (COD) from synthetic and real effluents. The maximum %RE of BOD (96.76) and COD (98.91) was achieved at 1.5 M dose of CTiO2-CS, 120 min of contact time, pH 6.5, an initial BOD concentration of 900 mg/L, and an agitation speed of 400 rpm. Similarly, the %RE of COD was found to be 86.75 for synthetic effluent and 90.97 for real effluent at initial COD concentrations of 8000 mg/L. Pseudo-second-order and Langmuir models are found to be the best fits for BOD and COD adsorption. The diffusion model suggests that surface adsorption as well as intraparticle diffusion contribute to the actual adsorption process. Regeneration experiments were performed for four cycles, and CTiO2-CS was found to be the most regenerable adsorbent material. The performance of the adsorbent was compared with previous studies, and it was found to have excellent adsorption capacity. As a result, the developed filter bed could be used as a promising superadsorbent for the removal of organic load in MPIE.
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Affiliation(s)
| | - Sharanagouda Hiregoudar
- Centre for Nanotechnology, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, 584 104, India
| | - Udaykumar Nidoni
- Department of Processing and Food Engineering, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, 584 104, India
| | - Sharanabasava V Ganachari
- Department of Chemistry, School of Advanced Sciences, KLE Technological University, Hubballi, 580031, India.
| | - Veerabhadragouda B Patil
- Institute of Energetic Materials, Faculty of Chemical Technology, University of Pardubice, 53210, Pardubice, Czech Republic
| | - Vijayakumar Hiremath
- Centre for Nanotechnology, College of Agricultural Engineering, University of Agricultural Sciences, Raichur, 584 104, India
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13
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Interplay of organic components in membrane fouling evolution: Statistical evidence from multiple spectroscopic analyses. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Huang W, Cheng X, Li T, Lv W, Yuan Q, Sun X, Wang L, Zhou W, Dong B. Investigation of membrane fouling and mechanism induced by extracellular organic matter during long-term exposure to pharmaceuticals and personal care products. ENVIRONMENTAL RESEARCH 2022; 214:113773. [PMID: 35777434 DOI: 10.1016/j.envres.2022.113773] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
This study investigated ultrafiltration membrane fouling by extracellular organic matter (EOM) and the mechanism operating during long-term exposure to pharmaceuticals and personal care products. The results indicated that carbamazepine and diclofenac in algal-laden water altered the filtration flux and membrane fouling by EOM. Exposure to low-concentration carbamazepine (0.25 μg/L) improved the filtration flux and the total (Rtot) and reversible fouling resistance (Rc), whereas the filtration flux and Rtot and Rc were reduced when EOM was used during long-term exposure to high carbamazepine concentrations (>1 μg/L). Both Rtot and Rc were increased when algae were exposed to 0.25 μg/L diclofenac, whereas the filtration flux and Rtot and Rc were alleviated when algae were exposed to >1 μg/L diclofenac. Moreover, carbamazepine and diclofenac (0.25 μg/L - 1000 μg/L) in water enhanced the irreversible fouling resistance (Rb) when ultrafiltration was used to treat algal-laden waters. The mechanism indicated that membrane fouling induced by standard blocking was transformed to complete blocking when EOM was exposed to high levels of carbamazepine (>0.25 μg/L) in the initial filtration process, whereas cake layer formation played an important role during the later filtration process; with low carbamazepine levels (0.25 μg/L), standard blocking of EOM was dominant during the entire filtration process. The membrane fouling mechanism also changed when algal-laden waters were exposed to diclofenac, the membrane fouling was transformed from complete blocking to standard blocking when DFC was present in the initial filtration process, whereas cake layer formation exerted an important role during the late filtration process. This research provides important information on the long-term risks caused by pharmaceutical and personal care products and potential threats to membrane treatment.
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Affiliation(s)
- Weiwei Huang
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Xiaoxiang Cheng
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China; Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Tian Li
- School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Weiwei Lv
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Quan Yuan
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Xiaolin Sun
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Lin Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China; Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Wenzong Zhou
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.
| | - Bingzhi Dong
- School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
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15
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Effect of Fe(II)-Activated Peroxymonosulfate (PMS) on the Performance of Ultrafiltration (UF) Process for Secondary Effluent Treatment and Reuse. WATER 2022. [DOI: 10.3390/w14111726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The secondary effluent of the wastewater treatment plant is considered as one of the reused water sources and needs advanced treatment to meet increasingly stringent water treatment standards. Ultrafiltration, as one of the most widely used advanced treatment technologies, is limited due to membrane fouling, and coagulation and pre-oxidation have received extensive attention as pretreatment methods to alleviate membrane fouling. This research proposes a new method of Fe(II)-activated peroxymonosulfate (PMS) coagulation and a pre-oxidation system coupled with ultrafiltration (UF) to treat secondary effluent from sewage plants, separately evaluating the treatment effect under different molar ratios of Fe(II)/PMS. The Fe(II)/PMS decontamination mechanism and membrane fouling control effect were elucidated through pollutant removal efficiency, membrane morphology, membrane flux trend, and membrane fouling resistance distribution. According to the experimental results, the optimal effect of organic matter removal and membrane fouling mitigation was achieved at the Fe(II)/PMS dosage of 60/60 μM/μM (molar ratio 1:1). The efficiency of pretreatment methods in removing organics and fluorescent components and mitigating membrane fouling followed the order of Fe(II)/PMS > Fe(III) > inactivated PMS. Fe(II)/PMS could produce a synergistic effect in a high concentration state (60 μM), relying on the dual effects of coagulation and oxidation to alleviate membrane fouling. Coagulation and pre-oxidation by Fe(II)/PMS significantly reduced the clogging of membrane pores and the proportion of irreversible resistance, effectively controlling membrane fouling and improving effluent quality. SEM images further confirmed its effectiveness, and EPR results unequivocally indicated that its synergistic mechanism was mediated by •OH and SO4•−. The research results can provide ideas for advanced wastewater treatment and secondary effluent reuse.
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16
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Yu H, Du C, Qu F, He J, Rong H. Efficient biostimulants for bacterial quorum quenching to control fouling in MBR. CHEMOSPHERE 2022; 286:131689. [PMID: 34352546 DOI: 10.1016/j.chemosphere.2021.131689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/12/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
Quorum quenching (QQ), which disrupts bacterial communication and biofilm formation, could alleviate biofouling in MBR. QQ bio-stimulus possessing similar conserved moiety as the signal molecule could promote indigenous QQ bacteria, and thus successfully alleviate biofouling in MBR. However, efficient biostimulant has been barely explored for QQ enhancement in activated sludge system. This study extensively enumerated the potential QQ bio-stimuli, and examined their efficacy on QQ promotion for activated sludge. Moreover, the effect of the QQ consortia on fouling mitigation was also investigated. The results indicated that gamma-caprolactone (GCL), d-xylonic acid-1,4-lactone (XAL), gamma-heptalactone (GHL), urea, and acetamide proved effective in promoting AHLs inactivating activity of activated sludge. GCL, XAL, and GHL intensified the lactonase activity, while urea and acetamide augmented acylase activity. While coupled with beads entrapment, GCL consortia beads, XAL consortia beads, and urea consortia beads effectively disrupted quorum sensing (QS) and controlled membrane fouling in MBR. This work found out several optional bio-stimuli valid for tuning QQ in activated sludge system, and provided easily available and economical alternatives for QQ biostimulation, meanwhile the proposed QQ-MBR approach through QQ biostimulation and consortia entrapment also proved effective and practical.
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Affiliation(s)
- Huaorng Yu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou, 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Chenyu Du
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou, 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Fangshu Qu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou, 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Junguo He
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou, 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Hongwei Rong
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou, 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China.
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17
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Kou L, Huang T, Zhang H, Wen G, Li N, Wang C, Lu L. Mix-cultured aerobic denitrifying bacterial communities reduce nitrate: Novel insights in micro-polluted water treatment at lower temperature. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:148910. [PMID: 34328901 DOI: 10.1016/j.scitotenv.2021.148910] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 06/13/2023]
Abstract
Three mix-cultured aerobic denitrifiers were screened from a source water reservoir and named HE1, HE3 and SU4. Approximately 72.9%, 68.6% and 66.2% of nitrate were effectively removed from basal medium, respectively, after 120 h of cultivation at 8 °C. The nitrogen balance analysis revealed about one-fifth of the initial nitrogen was converted into gaseous denitrification products. According to the results of Biolog, the three microfloras had high metabolic capacity to carbon sources. The dominant genera were Pseudomonas and Paracoccus in these bacterial communities based on nirS gene sequencing. Response surface methodology elucidated that the denitrification rates of identified bacteria reached the maximum under the following optimal parameters: C/N ratio of 7.51-8.34, pH of 8.03-8.09, temperature of 18.03-20.19 °C, and shaking speed of 67.04-120 rpm. All results suggested that screened aerobic denitrifiers could potentially be applied to improve the source water quality at low temperature.
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Affiliation(s)
- Liqing Kou
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Tinglin Huang
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China.
| | - Haihan Zhang
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Gang Wen
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Nan Li
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Chenxu Wang
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Linchao Lu
- Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
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18
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Bai L, Liu Z, Wang H, Li G, Liang H. Fe(II)-activated peroxymonosulfate coupled with nanofiltration removes natural organic matter and sulfamethoxazole in natural surface water: Performance and mechanisms. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119088] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Fan G, Zhang J, Zhan J, Luo J, Lin J, Qu F, Du B, Tang D, Xie B, Yan Z. Recyclable self-floating A-GUN-coated foam as effective visible-light-driven photocatalyst for inactivation of Microcystis aeruginosa. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126407. [PMID: 34175707 DOI: 10.1016/j.jhazmat.2021.126407] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/29/2021] [Accepted: 06/11/2021] [Indexed: 06/13/2023]
Abstract
In this work, a recyclable self-floating A-GUN-coated (Ag/AgCl@g-C3N4@UIO-66(NH2)-coated) foam was fabricated for effective inactivation of Microcystis aeruginosa (M. aeruginosa) under visible light. The floating photocatalyst was able to inactivate 98% of M. aeruginosa within 180 min under the visible-light irrigation, and the floating photocatalyst exhibited a stable performance in various conditions. Moreover, the inactivation efficiency can still maintain nearly 92% after five times recycle experiments, showing excellent photocatalytic stability. Furthermore, effects of A-GUN/SMF floating catalyst on the physiological properties, cellular organics, and algal functional groups of M. aeruginosa were studied. The floating photocatalyst can not only make full use of excellent photocatalytic activities of A-GUN nanocomposite, but also promote contact between catalyst and algae, and realize the effective recovery of the photocatalyst. Finally, possible photocatalytic inactivation mechanisms of algae were obtained, which provides references for removing cyanobacteria blooms in real water bodies.
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Affiliation(s)
- Gongduan Fan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, China; Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, 350002 Fujian, China
| | - Junkai Zhang
- College of Civil Engineering, Fuzhou University, 350116 Fujian, China
| | - Jiajun Zhan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, China
| | - Jing Luo
- Fujian Jinhuang Environmental Sci-Tech Co. Ltd., 350002 Fujian, China
| | - Jiuyang Lin
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, School of Environment and Resources, Fuzhou University, Fuzhou 350116, China
| | - Fangshu Qu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China
| | - Banghao Du
- College of Civil Engineering, Fuzhou University, 350116 Fujian, China
| | - Dingsheng Tang
- CCCC First Highway Engineering Group Xiamen Co., Ltd., Xiamen 361021, China
| | - Binghan Xie
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Zhongsen Yan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, China; Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, 350002 Fujian, China.
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20
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Pan Z, Huang Y, Guo H, Huang T, Wen G, Yu H, He J. Synthesis of dual
pH
‐ and temperature‐sensitive poly(N‐isopropylacrylamide‐co‐acrylic acid)/sewage sludge ash hydrogel with the simultaneously high performance of swelling and deswelling. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Zhihui Pan
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta Guangzhou University Guangzhou China
- School of Civil Engineering Guangzhou University Guangzhou China
| | - Yingru Huang
- School of Civil Engineering Guangzhou University Guangzhou China
| | - Haoyong Guo
- School of Civil Engineering Guangzhou University Guangzhou China
| | - Tingjian Huang
- School of Civil Engineering Guangzhou University Guangzhou China
| | - Gang Wen
- Shanxi Key Laboratory of Environmental Engineering Xi'an University of Architecture and Technology Xi'an China
| | - Huarong Yu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta Guangzhou University Guangzhou China
- School of Civil Engineering Guangzhou University Guangzhou China
| | - Junguo He
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta Guangzhou University Guangzhou China
- School of Civil Engineering Guangzhou University Guangzhou China
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21
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Role of different dimensional carbon nanoparticles in catalytic oxidation of organic pollutants and alleviating membrane fouling during ultrafiltration of surface water. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118804] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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22
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Fan G, Chen Z, Yan Z, Du B, Pang H, Tang D, Luo J, Lin J. Efficient integration of plasmonic Ag/AgCl with perovskite-type LaFeO 3: Enhanced visible-light photocatalytic activity for removal of harmful algae. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:125018. [PMID: 33422753 DOI: 10.1016/j.jhazmat.2020.125018] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/17/2020] [Accepted: 12/29/2020] [Indexed: 05/21/2023]
Abstract
A novel plasmonic Ag/AgCl@LaFeO3 (ALFO) photocatalyst was successfully synthesized by a simple in-situ synthesis method with enhanced photocatalytic activity under visible light for harmful algal blooms (HABs) control. The structure, morphology, chemical states, optical and electrochemical properties of the photocatalyst were systematically investigated using a series of characterization methods. Compared with pure LaFeO3 and Ag/AgCl, ALFO-20% owned a higher light absorption capacity and lower electron-hole recombined rate. Therefore, ALFO-20% had higher photocatalytic activity with a near 100% removal rate of chlorophyll a within 150 min, whose kinetic constant was 15.36 and 9.61 times faster than those of LaFeO3 and Ag/AgCl. In addition, the changes of zeta potential, cell membrane permeability, cell morphology, organic matter, total soluble protein, photosynthetic system and antioxidant enzyme system in Microcystis aeruginosa (M. aeruginosa) were studied to explore the mechanism of M. aeruginosa photocatalytic inactivation. The results showed that ALFO-20% could change the permeability and morphology of the algae cell membrane, as well as destroy the photosynthesis system and antioxidant system of M. aeruginosa. What's more, ALFO could further degrade the organic matters flowed out after algae rupture and die, reducing the secondary pollution and avoiding the recurrence of HABs. Finally, the species of reactive oxygen species (ROS) (mainly •O2- and •OH) produced by ALFO were determined through quenching experiments, and a possible photocatalytic mechanism was proposed. Overall, ALFO can efficiently remove the harmful algae under the visible light, providing a promising method for controlling HABs.
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Affiliation(s)
- Gongduan Fan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, PR China; Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, 350002 Fujian, PR China
| | - Zhong Chen
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China
| | - Zhongsen Yan
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, PR China; Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, 350002 Fujian, PR China.
| | - Banghao Du
- College of Civil Engineering, Fuzhou University, 350116 Fujian, PR China
| | - Heliang Pang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Dingsheng Tang
- CCCC First Highway Engineering Group Xiamen Co., Ltd., Xiamen 361021, PR China
| | - Jing Luo
- Fujian Jinhuang Environmental Sci-Tech Co. Ltd., 350002, Fujian, PR China
| | - Jiuyang Lin
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, School of Environment and Resources, Fuzhou University, Fuzhou 350116, PR China
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23
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Bao X, She Q, Long W, Wu Q. Ammonium ultra-selective membranes for wastewater treatment and nutrient enrichment: Interplay of surface charge and hydrophilicity on fouling propensity and ammonium rejection. WATER RESEARCH 2021; 190:116678. [PMID: 33279747 DOI: 10.1016/j.watres.2020.116678] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/28/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Membrane fouling and ammonium transmembrane diffusion simultaneously pose great challenges in membrane-based pre-concentration of domestic wastewater for efficient subsequent resources recovery (i.e., energy and nutrients). Herein, amine-functionalized osmotic membranes were fabricated by optimizing the grafting pathway of polyamidoamine (PAMAM) dendrimer to mitigate fouling and ammonium transmembrane diffusion. Compared to the control membrane, the PAMAM-grafted membranes with abundant primary amine groups possessed substantially increased hydrophilicity and positive charges (i.e., protonated primary amines) and thus exhibited superior anti-fouling capability and ammonium selectivity. With further increasing the PAMAM grafting ratio, the membrane exhibited a steady enhancement in ammonium selectivity and eventually achieved an ultra-high ammonium rejection of 99.4%. Nevertheless, the anti-fouling capability of such ammonium ultra-selective membrane was weakened due to the suppression of the adverse impact of excessive positive charges over the beneficial effect of increased surface hydrophilicity. This in turn leads to a drop of ammonium rejection below 90% during domestic wastewater concentration. This study demonstrates that the membrane with a moderate primary amine loading could achieve the highest anti-fouling capability with only less than 10% flux decline and meanwhile maintain an excellent ammonium rejection above 94% during raw domestic wastewater concentration. This work provides theoretical guidance for fabricating simultaneously enhanced anti-fouling and ammonia-rejecting membranes.
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Affiliation(s)
- Xian Bao
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798; Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141
| | - Qianhong She
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798; Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141.
| | - Wei Long
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798; Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141
| | - Qinglian Wu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China.
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24
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Membrane fouling control by UV/persulfate in tertiary wastewater treatment with ultrafiltration: A comparison with UV/hydroperoxide and role of free radicals. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117877] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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