Biotechnology Journal
·
2024
·Vol. 19
·期 9
·2400383
·
IF 3.2
Kaifeng Xu,Ying Huo,Shiming Tang,Shuangyan Han,Ying Lin,Suiping Zheng
Laccases are extensively used in the textile industry due to their ability to decolorize dyes, modify fabric surfaces, and bleach textiles. Identifying a laccase with both high thermal stability and alkali tolerance suitable for textile applications presents a significant challenge. A novel alkaline laccase, LacCT, was discovered from Caldalkalibacillus thermarum and successfully expressed it in Escherichia coli . LacCT displayed optimal activity at 65°C and maintained high stability across a pH range of 6.0–10.0, with an optimal pH of 7.5. Through rational design, the thermal stability of the best variant, G190P/Q254Y/G336M/D510F (LacCT-11), was significantly enhanced, resulting in a half-life of 63.2 min at 60°C – 1.8 times longer than that of the wild type. This research introduces a promising new laccase with considerable potential for decolorizing textile wastewater and improving the ramie degumming process.
研究领域:
酶学
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生物技术
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纺织科学
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产品关联
DOI
PubMed
高影响因子
Water
·
2025
·Vol. 17
·期 4
·574
·
IF 3
Yanjing Zhu,Sijia Yang,Mathias Gustavsson,Wenli Huang,Si Gao,Rui Wang
Wastewater treatment plants (WWTPs) play a crucial role in mitigating microplastic (MP) release to the environment. In this paper, a WWTP of a textile manufacturing plant in Guangdong, China, was investigated to identify MP characteristics and the effectiveness of wastewater treatment within the plant. Laser Direct Infrared (LDIR) and Liquid Chromatography with Mass Spectrometry (LC-MS/MS) were applied to quantify both the number and the mass of the microplastics in the effluent of the textile manufacturing plant where most of the wastewater were from three printing and dyeing lines. The study further investigated the MP removal efficiency of each wastewater treatment process of the industry-owned WWTP and analysed the removal mechanism of each step, highlighting limitations in detecting and eliminating MPs. It is observed that (1) the results from LDIR and LC-MS/MS can be complementary to each other; (2) the MP concentration in the influent was 1730 n/L by number and 13.52 µg/L by mass; (3) the total removal efficiency of the WWTP were 99% by the number of MPs and 67.7% by the mass of MPs; (4) nine types of polymers have been identified in the influent, of which Polyamide (PA) was dominating; (5) hydrolysis acidification removed PA most; (6) aerobic tank, sand filter, and biological aerated filter (BAF) showed low removal efficiency; (7) coagulation and sedimentation tank had the highest removal efficiency to PET than any other processes.
研究领域:
环境科学
·
废水处理
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Maria Wasim,Aneela Sabir,Muhammad Shafiq,Rafi Ullah Khan
In the textile industry , membrane technology has been widely employed for the exclusion of direct dyes. In this research paper, firstly vapor grown carbon nanofibers (VGCNFs) were functionalized with carboxylates group via piranha oxidation, and then series of CA/PEO-PPO-PEO triblock copolymers were prepared by blending with varying weight percentages of modified VGCNFs and Zirconia (ZrO 2 ). The structural morphologies of membranes were visualized by scanning electron microscope (SEM), atomic force microscopy (AFM) and transmission electron microscopy (TEM), which exhibits the dispersity of dual fillers in polymer matrix thus improving the microstructure of resultant membranes. The experimental data indicates that the modified VGCNF and ZrO 2 nanoparticles were shown increase hydrophilic character. The direct dyes rejection were successfully after filler addition, which were 96% (for Direct Red), 99% (for Direct Blue) and 93% (for Direct Orange). The membranes showed a better antifouling property even after several washing cycles along with improved biofouling property, both of these properties showed a better membrane life. As an outcome, this research could have been a great potential to be used to treat dyes in textile industry.
研究领域:
材料科学
·
环境工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhipeng Zhang,Jie Chen,Yan Ke,Xi Du,Xiaoqun Qiu,Liming Zhou,Yugao Zhang,Minghui Qiu,Jing Guo,Xu Jiang,Lu Shao
The treatment and reuse of high-salinity dyeing wastewater remains a critical challenge in the cotton textile industry, where lamellar graphene oxide (GO) membranes show significant potentials but are limited by permselectivity and stability of their channels. Herein, the porous covalent organic framework nanosheets (CONs) incorporated GO (GO/CON) membranes with engineered separation nanochannels were fabricated by a continuous rod-coating strategy using Mayer bars. Specifically, the incorporation of porous TpPa-SO 3 H nanosheets into GO membranes enhanced membrane permeability and dye/salt selectivity, attributed to the introduction of additional porous channels and the strengthened electrostatic properties from CONs. This GO/CON membrane exhibits exceptional durability during continuous cross-flow operations exceeding 300 h in high-salinity dyeing wastewater. Furthermore, the high-salinity permeate was successfully reused for dyeing cotton fabrics, producing textiles with minimal color differences, thereby demonstrating both environmental sustainability and economic viability for practical industrial applications.
研究领域:
环境工程
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材料科学
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化学工程
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膜技术
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纺织科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Zhengjie Gong,Tao Ma,Feng Liang
Organic dyes and nitrophenols in the textile industry are wastewater pollutants. In order to develop an efficient nanocatalysts to remove organic pollutants in wastewater, the trimetallic Ni@Cu@Pd nanoparticles (Ni@Cu@Pd NPs) with a blackberry-like structure was successfully prepared by a seed mediated growth method for the first time. The blackberry-like structure and the presence of Ni, Cu and Pd have been confirmed through TEM, SEM, EDS and XPS characterizations. Owing to the charge interaction between metal species along with blackberry-like structure, trimetallic Ni@Cu@Pd NPs delivered a record high catalytic activity toward the reduction of rhodamine B (RhB), with an apparent rate constant of 7.20 min −1 . Ni@Cu@Pd NPs also exhibited high activity for the catalytic reduction of methylene blue (MB) and 4-nitrophenol (4-NP). Moreover, the Ni@Cu@Pd NPs catalyst showed excellent stability and reusability.
研究领域:
环境科学
·
纳米技术
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催化
·
水处理
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Xiaoxiao Wan,Zhihao Rong,Kaixuan Zhu,Yumin Wu
With the rapid development of the textile industry, a large amount of dyeing wastewater discharge has caused great harm to the ecological environment. In this work, a dual-network, composite hydrogel adsorbent with excellent mechanical properties, good reusability, and large adsorption capacity was prepared by introducing chitosan cross-linked polyvinylamine into the N , N ′-methylenebisacrylamide cross-linked polyacrylic acid network. The dual cross-linking network gave the hydrogel excellent mechanical properties with maximum tensile stress and strain up to 1.9 MPa and 920 %. The adsorption capacity of methylene blue on hydrogel was up to 596.14 mg/g. In addition, the prepared hydrogel exhibited good reusability, and their adsorption efficiency remained above 85 % in five consecutive cycles. The adsorption behavior was well fitted by Pseudo-second-order kinetics and the Langmuir equation, indicating that the hydrogel was chemisorbed to the dye as a monolayer. The adsorption mechanism analysis showed that the electrostatic interactions and hydrogen bonding between the functional groups of the hydrogels and methylene blue molecules contributed to the good adsorption capacity. Overall, the synthesized composite hydrogels could be used as an efficient adsorbent for the removal of methylene blue dye, particularly from textile industry wastewater.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Jiaojiao Chen,Yiwei Zhang,Mei Zhao,Xinyi Zan,Xiaohong Pan,Cunsheng Zhang,Ziwei Chen,Hossain M. Zabed,Xianghui Qi
Pectate lyase (PL) holds significant potential for applications in various industries. However, the existing PL was unable to adapt to thermo-alkaline industrial environments. In this work, a PL from Caldicellulosiruptor bescii DSM 6725 (hereafter, CbPelD) was studied to disclose its structural and biochemical properties. CbPelD consisted of a putative signal peptide sequence, a short linker region, and a catalytic domain (PelD-II), along with an exoacting β-fructofuranosidase domain (PelD-I). In molecular dynamics simulation, PelD-II demonstrated significantly higher activity and thermal stability compared to other truncated enzymes of CbPelD. The optimal pH and temperature for PelD-II were 10.0 and 60 °C, respectively, with the specific activity increasing by 164–223% in the presence of Ca2+ or Ni2+. The exotype PelD-II exhibited efficient degradation of polygalacturonic acid (PGA) into unsaturated galacturonic acid (uG1), digalacturonic acid (uG2), and trigalacturonic acid (uG3). In the bioscouring assay, PelD-II exhibited a significant increase in the wetted fabric area to 6.072 ± 0.684 cm2, which was about 7.9 times higher than untreated fabric. Scanning electron microscopy further revealed that treatment with PelD-II resulted in a smoother fiber surface, providing direct visual confirmation of the enzyme’s action. These results highlight the potential of PelD-II for applications in the textile industries.
研究领域:
酶学
·
生物技术
·
纺织工业
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产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 18
·3234-3241
·
IF 3.117
Pengpeng Yang,Xiaoqiang Peng,Sen Wang,Dong Li,Ming Li,Pengfei Jiao,Wei Zhuang,Jinglan Wu,Qingshi Wen,Hanjie Ying
Bio-based polyamide 56 is a new type of bio-based polyamide that is regarded as a most promising material for the textile industry. High-quality polymer materials require first high-quality monomers. In this report, we investigated the solid–liquid equilibrium of polyamide 56 salt (an ionic solid compound used to prepare polyamide 56), thermodynamic parameters of the dissolution process, and the crystallization process, and screened out a favorable crystallization system to obtain a high-quality product. The dissolution was shown to be endothermic and not a spontaneous process; entropy was the overall driving force for the dissolution. The crystallization process and the effect of impurities were investigated. Cooling crystallization in pure water was beneficial to the nucleation and crystal growth of polyamide 56 salt, and is a good choice from the perspective of economy and the stability of the product. Additionally, the crystal structural characteristics and thermal behavior were systematically characterized by single crystal X-ray diffraction (SSRD), powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). It was found that there were two crystal forms of polyamide 56 salt, dihydrate and anhydrate. The dihydrate was a stable crystal form, and the anhydrous form could be converted into the dihydrate by absorbing moisture. The temperature 183.7 °C was the onset of 1,5-pentanediamine cation deprotonation and adipic acid anion protonation rather than their degradation. These contributions provide a potential industrial preparation strategy for high-quality polyamide 56 salt, as well as laying a foundation for its polymerization.
研究领域:
材料科学
·
化学工程
·
纺织工业
✓ 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）