JOURNAL OF MEMBRANE SCIENCE
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2021
·
IF 8.742
Yuefei Song,Xueshuang Bai,Nan Zhang,Zhaoyu Lu,Mengyao Zhu,Yongxin Wang,Kai Jiang
A novel combination of custom-tailoring tight nanocomposite membrane process with dual-stage pretreatment incorporating flocculation and ultrafiltration has been experimentally conceived for the advanced reclamation of seriously contaminated hairwork dyeing effluent (HDE). The hybrid system exhibited impressive advantages of qualified recycle rate of HDE (91.2%) and minimal environmental impact when taking both bearable membrane fouling and appropriate long-term separation performance into consideration. It was observed that after partial alternative doping of M-tolidine-H and continuous incorporating of carbon quantum dots , both skin features (smoothness, hydrophilicity and charge) and nanoporous loose body (porosity and apparent pore size) of the resultant membranes were improved synergistically. As a consequence, the optimal TFN-CQDs membrane showed high water permeance of 4.31 L m −2 h −1 bar −1 , rejection for small-sized organics (≥97.3%) and salt (≥96.4%) and good antifouling ability (86.2% of flux recovery ratio) operated for 72 h, which were superior than those of most other reported permeate membranes. Besides, the economical and feasible pretreatment steps including less dosage (only 100 mg L −1 ) of biodegradable CLF-10 flocculant and cheap UF module made the optimized reuse process more attractive. Overall, this study has taken a concrete step forward on the road of realizing zero liquid discharge and advanced reclamation of HDE.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
WATER RESEARCH
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2025
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IF 12.4
Minghui Du,Ruohan Wang,Hong Wang,Jianxin Li
Removal of organic pollutants while recovering Na 2 SO 4 is crucial for the dyeing wastewater resourcefulness. In this study, nanofiltration (NF) was used for the treatment of industrial dyeing wastewater (COD=294.2 mg L −1 , the concentration of Na 2 SO 4 = 3.8 g L −1 ). An electrochemical membrane reactor (ECMR) was then constructed with conductive carbon membrane (CM) as cathode and graphite as anode for the organic removal from the NF concentrate with high concentration of Na 2 SO 4 for reuse. Meanwhile, ECMR was also coupled with ozone (O 3 ) to enhance its performance. Electron spin resonance (ESR) was employed to investigate the generation of active species during the ECMR-O 3 system. The organics were analyzed by excitation-emission matrix (EEM). The results show that Na 2 SO 4 concentration of 18.4 g L −1 and purity of 92.4 % were achieved from the NF concentrate. After the NF concentrate was treated by ECMR-O 3 system, the COD reduced to 48.6 mg L −1 with a removal rate of 92.7 %, which was higher than that of O 3 oxidation (57.7 %) and ECMR (13.9 %) alone. It was ascribed to the electrolysis of O 3 flowed through the cathodic CM, leading to more HO∙ produced. Certainly, the high concentration of Na 2 SO 4 in the NF concentrate provided a high conductivity environment for the optimal operating of ECMR and the CM promoted the enhanced mass transfer under the diffusive conditions of O 3 . The NF concentrate treated could be directly reused for dyeing fabrics, making a profit of 0.25 $ m −3 and reducing a carbon emission of 46.81 %. (2.79 kg CO 2 m −3 ). In a word, this study offers a viable approach for dyeing wastewater treatment and Na 2 SO 4 resources recover.
研究领域:
环境科学
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水处理工程
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产品关联
DOI
PubMed
高影响因子
WATER RESEARCH
·
2020
·
IF 9.13
Shu Wang,Bingliang Zhang,Chao Shan,Xing Yan,Hong Chen,Bingcai Pan
Phosphonates discharged from wastewater treatment plants (WWTPs) have attracted increasing concerns because of their potential impact on eutrophication and potential risks to aquatic ecosystems. However, very few studies are available on their occurrence and transformation in WWTPs, partly due to the lack of sensitive methods for phosphonate analysis in complex matrices. Herein, based on our recent progress in phosphonate analysis, the occurrence and transformation of phosphonates along the full-scale wastewater treatment processes of two textile dyeing WWTPs were revealed. A set of typical phosphonates, including six phosphonate chelators (PCs) and four potential degradation products of PCs (DP-PCs) were quantified in different units and the final dewatered sludge. Three PCs (2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC), 1-hydroxyethane 1,1-diphosphonic acid (HEDP) and nitrilotris(methylene phosphonic acid) (NTMP)) at upmost mg/L and a considerable amount of four DP-PCs (9.12–608 μg/L) were detected in the influents of both WWTPs. In the subsequent treatment, NTMP could be removed more efficiently than PBTC and HEDP, especially in the coagulation unit, and the dissolved phosphonates were eliminated more readily than other dissolved organic phosphorus fractions. Of particular note, the toxicologically critical DP-PC (i.e., aminomethylphosphonic acid) was produced during the coagulation and biological treatment units. The final precipitation unit seemed essential to ensure satisfactory removal of PCs and DP-PCs. In addition, a significant accumulation of phosphonates in dewatered sludge (up to 7.81 g/kg) and the widespread occurrence of harmful DP-PCs also reminded us to pay more concerns on their potential risks during further sludge disposal in future.
研究领域:
环境科学
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水处理工程
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
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2019
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IF 5.026
Xuejiao Hu,Yue Hu,Guizhou Xu,Meng Li,Yuanting Zhu,Lu Jiang,Yizhou Tu,Xingqi Zhu,Xianchuan Xie,Aimin Li
Adsorption is one of the most preferred techniques in the advanced treatment of dyeing wastewater. Magnetic porous materials with good adsorption performance, excellent reusability, and a green synthesis route are highly desirable adsorbents in commerce. In this study, we synthesized a magnetic β-cyclodextrin polymer (MNP-CM-CDP) containing many macro- and ultramicropores in aqueous phase. CO 2 adsorption-desorption isotherms and a dye adsorption method provided Langmuir specific surface areas for the MNP-CM-CDP of 114.4 m 2 g −1 and 153 m 2 g −1 , respectively. Model pollutants (BPA, MB , BO 2 , RhB , Cr(III), Pb(II), Zn(II), and Cu(II)) were rapidly and efficiently removed from the aqueous solution by the MNP-CM-CDP. In addition, the polymer could be easily separated from the solution under an external magnetic field. The adsorption of the contaminants was dependent on pH, while the effects of ionic strength and humic acid were slight in the concentration range studied. The polymer could be easily regenerated at room temperature and retained good adsorption performance. Moreover, the MNP-CM-CDP showed good feasibility for the removal of pollutants from actual dyeing wastewater samples.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
STARCH-STARKE
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2022
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IF 2.688
Kexu Wang,Hongfei Liu,Yating Wang,Dishun Zhao,Jianhua Zhai
Dissolved organic matter is one of the difficult problems in the treatment of textile dyeing wastewater, among which humic substances are the most harmful to the environment and human health. Herein, cationic starch-based flocculants are prepared by free radical polymerization of corn starch (St) and methacryloyloxyethyl trimethyl ammonium chloride (DMC) in a redox-initiated system of ammonium persulfate and sodium bisulfite. Corn starch-graft-poly(methacryloyloxyethyl trimethyl ammonium chloride) is denoted as St-g-PDMC. The St-g-PDMC is comprehensively characterized in terms of structural (element analysis, Fourier transform infrared, X-ray diffraction, proton nuclear magnetic resonance spectroscopy), morphological (scanning electron microscopy), and thermal (differential scanning calorimetry) properties. Humic acid (HA) solution is selected to simulate negatively charged dissolved organic matter. The flocculation performance and mechanism of St-g-PDMC, cationic polyacrylamide (CPAM), and polymerized aluminum chloride (PAC) are systematically investigated. The experimental results show that St-g-PDMC functions mainly through the electric neutralization and bridging effect as the flocculation mechanism, CPAM using its own structure and the colloid formed by PAC through hydrolysis is more in line with the bonded bridging and net roll sweep trapping. The combined formulation of St-g-PDMC and PAC shows advantages over a single flocculant in the treatment of textile dyeing wastewater, and its cost is evaluated.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
Journal of Cleaner Production
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2020
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IF 7.246
Jiru Jia,Yunjie Yin,Wenwen Liu,Xinxiang Li,Chaoxia Wang
Colored wastewater has to be treated before its discharge, which is a great challenge for the protection of the ecological environment. A novel polymeric dye with nanoparticle morphology has been handily designed to dye polyester fabrics and can be fully recycled to avoid a large number of dyes discharge. It solves the colored wastewater pollution problem in the dyeing process from the source. The colored polyurethane nanoparticles with an average size of 500 nm are prepared via emulsion polymerization . The average content of the colorant monomer on nanoparticle is 2.77%. The colored nanoparticle demonstrates no thermal degradation at 110 °C and no damage under 20 MPa, which means good adaptability for the high-temperature dyeing process. The color depth of dyed polyester fabric can be easily adjusted by changing the concentration of colored nanoparticles in dyebath. The colored nanoparticles in the residual dyebath can be collected by extraction filtration leading to the concentration decreases from 11 mg mL −1 to 0.000025 mg mL −1 after filtered. Both the colored polyurethane nanoparticles and filtered water are fully reused for the next dyeing process to achieve the purpose of avoiding water consumption and residue dyes discharged. This work can promote the development of green and clean dyeing processes in the textile industry .
研究领域:
材料科学
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纺织工程
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环境科学
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产品关联
DOI
高影响因子
Water
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2021
·Vol. 13
·期 7
·968
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IF 3.103
Jie Zhong,Bin Yang,Yong Feng,Yang Chen,Li-Gao Wang,Wen-Dan You,Guang-Guo Ying
Heterogeneous photo–Fenton reactions have been regarded as important technologies for the treatment of textile dyeing wastewaters. In this work, an efficient core-shell magnetic anion exchange resin (MAER) was prepared through in situ polymerization and used to remove reactive brilliant red (X-3B) in a UV–Fenton system. The MAER exhibited satisfactory removal efficiency for X-3B because of its highly effective catalytic activity. More than 99% of the X-3B (50 mg/L) was removed within 20 min in the UV–Fenton reaction. This is because the uniformly dispersed core-shell magnetic microsphere resin could suppress the aggregation of Fe3O4nanoparticles and, thus, enhance the exposure of Fe reaction sites for catalytic reaction with H2O2. The good adsorption capacity of MAER also played an important role in promoting contact between X-3B and reactive radicals during the reaction. Mechanism research showed that hydroxyl radical (•OH) was the main reactive radicals for the removal of X-3B in the MAER UV–Fenton system. The MAER can be easily separated by a magnet after catalytic reactions. Moreover, the matrix effects of different substrates (Cl−, NO3−, SO42−, and humic acid) were investigated. The results showed that SO42−could be beneficial to improve the removal of X-3B but that the others decrease the removal. The MAER UV–Fenton also removed significant amounts of total organic carbon (TOC) for the X-3B solution and an actual textile dyeing industrial wastewater. The heterogeneous oxidation system established in this work may suggest prospects for practical applications in the treatment of textile dyeing wastewater.Keywords:magnetic anion exchange resin (MAER);UV–Fenton;reactive brilliant red;textile dyeing wastewater
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
International Journal of Environmental Research
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2020
·Vol. 15
·期 1
·1-10
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IF 2.007
Ye Yuxuan,Wan Jun,Li Qiang,Huang Yangbo,Pan Fei,Xia Dongsheng
The effective treatment of dyeing wastewater has been considered as one of the challenges. The sulfate radical (SO 4 •− )-based technology exhibited great potential in the field of organic wastewater treatment. In this study, copper oxide was synthesized and used to activate persulfate (PS) for removing methylene blue (MB) from aqueous solution. The effects of reaction parameters and coexisting substances on this process were studied. Under the optimal conditions ([CuO] = 0.2 g/L, [PS] = 2 g/L, pH = 7.0–9.0), more than 90% of MB was degraded. Cl − had little effect on MB removal, while SO 4 2− and HCO 3 − showed inhibitory effect. The activation energy of the reaction was 137.8 kJ/mol at 25 ℃ with an initial MB concentration of 10 mg/L. The mechanisms of PS activated by CuO was elucidated by radical scavenger and electron spin resonance trapping studies. The results found that sulfate radical (SO 4 · − ) and singlet oxygen ( 1 O 2 ) were the primary reactive oxygen species in the CuO/PS system. The recycling experiments showed that MB removal efficiency remained more than 70% after five cycles, which exhibited good stability and high efficiency of the catalyst. The favorable degradation performance of simulated textile wastewater indicated the potential application of CuO/PS for dyeing wastewater treatment.
研究领域:
环境科学
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化学工程
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水处理
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Yuefei Song,Yueke Sun,Nan Zhang,Chen Li,Mengxiang Hou,Kexin Chen,Tiemei Li
The complete fractionating synthetic and real dye/salt mixtures through loose nanofiltration membranes are of great significance for the textile wastewater recycling and reuse. Therefore, in this paper, a custom-tailoring loose nanocomposite membrane was fabricated to validate the feasibility of high-efficient dye/salt fractionation in the real pretreated hairwork dyeing effluent (HDE). It was observed that after partial alternative doping of 4,4′-bipiperidine and continuous incorporating of graphene quantum dots, the resultant membrane skin-layer features including smoothness, hydrophilicity and surface charge as well as nominal pore size were improved synergistically. Consequently, the optimal TFN-0.2 membrane showed outstanding fractionation and antifouling performance for synthetic dye/salt mixtures and real pretreated HDE. Specifically, for the former, the as-prepared TFN-0.2 membrane displayed the highest water permeance of 56.0 L·m −2 ·h −1 ·bar −1 , retention for all selected dyes (≥99.8%) and salt permeability (≥91.2%). Besides, the antifouling indexes in terms of reversible and irreversible fouling ratios of TFN-0.2 membrane against HDE solution reduced from 13.3% and 20.7% of pristine one to 8.32% and 1.34%, respectively. While flux recovery ratio markedly enhanced from 79.1% to 98.5% in the meantime. Overall, this work provides a facile method to fabricate high-efficient loose nanofiltration membranes for sustainably and precisely fractionating dye/salt mixtures from textile wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Yang Hu,Yan kui Cheng,Shuang Li,Lunfeng Liu,Xiaoyan Lin
Oily dyeing wastewater poses significant environmental hazards and therefore requires effective treatment. Although electrospun fiber membranes (EFMs) have been employed for oily dyeing wastewater treatment, conventional approaches typically involve a two-step process. This study presents a novel single-step modification method for EFMs, enabling efficient treatment of oily dyeing wastewater through a simplified single-membrane separation process. Experimental results demonstrated that spontaneous self-assembly occurs between ethyl cellulose (EC) colloids and hydrophilic SiO₂ nanoparticles in mixed solutions. Furthermore, these self-assembled colloids can undergo liquid-phase-induced self-organization on polyacrylonitrile (PAN) electrospun fiber membranes (EFMs), leading to a "welding" effect that firmly immobilizes both EC and hydrophilic SiO₂ nanoparticles onto the PAN fibers.The self-assembly process effectively prevented the agglomeration of SiO₂ nanoparticles, resulting in their uniform and stable fixation on the PAN fibers. Compared to the pristine PAN EFM, the PAN-EC-SiO₂ EFM exhibited significantly enhanced tensile strength, pH tolerance, surface roughness, hydrophilicity, hydration capacity, and methylene blue adsorption performance. Consequently, this modified membrane demonstrated dual functionality, effectively separating both oil-water emulsions and oily dyeing wastewater. During oily dyeing wastewater treatment, the PAN-EC-SiO₂ EFM achieved a methylene blue rejection rate of 92 %, an oil separation efficiency of 97.2 %, and a high flux of 153 L/m²·h.
研究领域:
环境科学
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膜技术
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纳米技术
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Yifan Liu,Siyang Zhao,Chenggong Xu,Jinxia Huang,Zhiguang Guo
The complex wastewater contaminated with oil and organic dyes tremendously threatens ecological environment and human habitat. The single functional membrane separation technology is not qualified to deal with complex wastewater treatment. Therefore, it is necessary to develop multifunctional membrane materials possess the ability to both oil/water separation and organic dye adsorption. Hence, we develop a simple and environmental strategy to incorporate zeolitic imidazolate framework-8 (ZIF-8) as the nanomaterial adsorbents into superhydrophilic hydrogel coated PVDF membrane through in-situ growth and gained the anti-oil fouling and dye adsorption properties. The prepared tannic acid-poly(acrylamide- co -acrylic acid)-sodium alginate@ZIF-8 (TPS@ZIF-8) hydrogel coated PVDF membrane exhibited high oil-in-water emulsion separation efficiency of 99.77% after 10 cycles of separation and outstanding anti-oil fouling property that flux recover rate more than 96.86% in the continuous filtration experiment, owing to the strong hydration ability of TPS@ZIF-8 hydrogel coating. Moreover, the abundant adsorption active sites (including imidazole ring, –COO – , phenolic hydroxyl and benzene ring) consisted by ZIF-8 adsorbent and hydrophilic functional groups on the TPS@ZIF-8-PVDF improved the dye adsorption capacity and exhibited selective cationic dye adsorption with efficiency over 98.7% after multiple cycles of dye filtration adsorption test. The adsorption process of TPS@ZIF-8-PVDF membrane for methylene blue (MB) followed the pseudo-second-order kinetic model and Langmuir adsorption model. Incorporating the dye adsorption performance of ZIF-8 nanomaterials with underwater superoleophobic property of TPS hydrogel coated separation membrane, the prepared ZIF-8 composited hydrogel coated PVDF membrane could simultaneously separate the MB dyed oil-in-water emulsion mixtures and showed cycle performance stability (separation over 99.7%). Furthermore, TPS@ZIF-8-PVDF membrane could maintain the superwetting and dye adsorption properties in various chemical/mechanical environments and even friction test. This study offers new insights into the design of multifunctional superwetting hydrogel coated membrane for complex wastewater treatment and purification.
研究领域:
环境科学
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材料科学
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化学工程
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废水处理
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Tiemei Li,Yuefei Song,Saifei Ma,Xueshuang Bai,Lingjie Zhang,Anning Tan,Kai Jiang
Based on the continuous innovation of membrane materials and partnered reagents, it is necessary to timely evaluate the efficiency improvement of a package of relevant wastewater treatment processes and clarify the associated pivotal causes. For this purpose, the root-cause analysis for fouling mitigation derived from influent characteristics, the techno-economic and toxicity reduction assessments of hairwork dyeing effluent (HDE) reclamation via three membrane-based hybrid systems approaching zero discharge were systematically carried out. The experimental results showed that with the aid of a novel efficient and biodegradable flocculant , the lower fluorescence peak intensity, the more negative zeta potential and the quantitatively dominant hydrophobic components in feedwater all helped to mitigate the same-charged hydrophilic TFN-CQDs membrane fouling due to modification of itself. Accordingly, the optimal processing technology required the minimum amount and replacement frequency for membrane elements and less than 1/5 and 1/10 of the energy consumption and chemicals of their counterparts, respectively. Besides, it also decreased the waste (brine) stream volume fraction to 7%, and greatly increased B/C value of supernatant to 0.667, thus strengthening “intermediate control” of pollutants. Although the organic contaminant components in HDE basically transcend the aromatic/hydrophilic differences in producing biotoxicity, all schemes still had good performance in its elimination. Undoubtedly, the outcome of these evaluations will provide valuable technical guidance for scaling-up the prototype results and promoting the cleaner production of local wig enterprises.
研究领域:
环境工程
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水处理
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膜技术
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废水回用
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可持续性
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）