INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Jiuyang Lin,Fang Lin,Xiangyu Chen,Wenyuan Ye,Xiaojuan Li,Huiming Zeng,Bart Van der Bruggen
Sustainable textile wastewater treatment strongly demands an indispensable paradigm shift from removal of contaminants to effective recovery of resources. In this work, a hybrid tight ultrafiltration (TUF) and bipolar-membrane electrodialysis (BMED) process was explored to recover resources (i.e., dye extraction, acid/base conversion, and pure water regeneration) from highly saline textile wastewater. Using a TUF membrane with 5000 Da molecular weight cutoff (MWCO) can obtain a sufficient rejection (>99.6%) of both reactive and direct dyes, due to the dye aggregation. Additionally, the considerably large pore size of the TUF membrane endowed the process with free transport of NaCl and Na2SO4 (i.e., >99.42%), exhibiting promise as an alternative means of separation of dyes and Na2SO4. Additionally, an integrated TUF-based diafiltration was designed to separate the model dye (i.e., reactive blue 194) and Na2SO4. Particularly, reactive blue 194 was remarkably concentrated from 997.9 to 7952.8 mg·L–1 by the TUF membrane with 99.5% dye recovery and 99.95% desalination efficiency after 8.0 diavolumes. Furthermore, a trace amount (i.e., 2.7 mg·L–1) of reactive blue 194 was observed in Na2SO4-containing TUF permeate, enabling a subsequent BMED operation. With the implementation of BMED, the Na2SO4-containing TUF permeate was sufficiently desalinated for acid/base conversion and pure water regeneration with no obvious fouling on the ion exchange membranes. These results demonstrate a potential applicability of the hybrid TUF/BMED process for sustainable management of textile wastewater, providing a strategy for practical applications in treatment of other high-salinity wastewaters.
研究领域:
环境科学
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化学工程
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水处理技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Chao Liu,Yongqiang Guo,Xinjing Wei,Chao Wang,Muchao Qu,Dirk W. Schubert,Chunhua Zhang
Developing an efficient and stable separation membrane material for textile water treatment is of considerable significance but challenging due to the limitation of chlorination degradation and bacterial fouling. To solve this problem, in this work, the amides groups in the polyamide structure were converted to imides by targeted grafted from diallyl dimethyl ammonium chloride (DADMAC) molecules. Consequently, chlorination degradation and bacterial fouling was markedly improved due to the reduction or elimination of N-H bonds and the increase of DADMAC grafting chains. Chlorine exposure experiment results showed that the salt rejection and water flux of modified membranes change less than that of the pristine membrane, and the surface morphology and chemical structure and basically remained unchanged. Meanwhile, the introduction of quaternary ammonium salt generated a hydrophilic and smooth membrane surface, thus improving the anti-fouling performance. In addition, with the advantage of an excellent antimicrobial activity, hardly any bacterial growth was observed even after 24 h culture, the membrane exhibits satisfactory stability in long-term textile water separation, which is considerable potential in the advanced wastewater treatment. The presented strategy on membrane preparation is believed to be a simple and effective method, which can also be widely used in other industrial wastewater treatment, such as medical wastewater, oilfield wastewater, etc.
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
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Dan Hu,Huanhuan Wu,Yanxiang Li
2-methacryloyloxy ethyl trimethylammonium chloride (DMC) was successfully grafted with 2-hydroxyethyl methacrylate (HEMA) as branching agent and N, N'-methylenebisacrylamide (MBAA) as crosslinker onto the surface of hydrolyzed polyacrylonitrile (HPAN) ultrafiltration membrane with high density via ceric ion (Ce 4+ )-induced graft polymerization. The successful graft polymerizations were confirmed by characterization of attenuated total reflectance spectrophotometer, X-ray photoelectron spectroscopy, scanning electron microscope and atomic-force microscopy. The obtained membranes showed surface positive charges and favorable hydrophilicity, which resulted in an ultrahigh permeability, distinguished rejection for positively charged dyes (>99%) and almost no retention for divalent salts (<4%), as well as excellent stability in multiple cycles of filtration. This work provided an efficient and facile approach to tailor the structure and properties of ultrafiltration membranes.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
CHEMOSPHERE
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2020
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IF 5.778
Jie Wang,Haibao Liu,Defang Ma,Yan Wang,Guangping Yao,Qinyan Yue,Baoyu Gao,Shue Wang,Xing Xu
In this work, the combined ultraviolet ozone process (UV/O 3 ) was applied for organic contaminant (Reactive Blue K-GL, RB) degradation in high salinity . The degradation rates of RB in both O 3 and UV/O 3 systems were enhanced by NaCl (the k increased from 0.080 to 0.116 to 0.132 and 0.267 min −1 respectively), while mineralization rate varied at different salt conditions. In addition, UV irradiation promoted the degradation efficiency of RB with the presence of salt. Singlet oxygen ( 1 O 2 ) was the primary active species in the UV/O 3 system. The quenching experiments and signal intensity of 1 O 2 corresponded well to the mineralization of RB. Under conditions of high salinity and high pH, O 3 has high mass transfer coefficient (k La , 3.303 min −1 ) and self-decomposition (k d , 0.600 min −1 ), which further promoted the formation of 1 O 2 for mineralization of RB. Furthermore, UV/O 3 system was efficient in real textile wastewater treatment (COD Cr removal rate 91.7% and decolorization rate 98.7%).
研究领域:
环境科学
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水处理
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污染物降解
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 12
·6695-6707
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IF 10.733
Chao Liu,Chao Wang,Yongqiang Guo,Jiaming Zhang,Yingying Cao,Hongpeng Liu,Zhen Hu,Chunhua Zhang
A novel aromatic polyamide (PA) reverse osmosis membrane with nanoscale water channels and hydrophilic molecular skin surface, similar to those of biomimetic neural networks, was realized for textile wastewater treatment via the facile strategy of interfacial polymerization with the addition of free radicals. The free-radical polymerization of diallyl dimethyl ammonium chloride, dispersed inside and on the surface of the PA functional layer, was initiated by irradiation to form a polyimide-hydrophilic polyolefin interpenetrating network structure as the functional layer and a molecular brush as the hydrophilic surface layer. Compared with the thin film composite (TFC) membrane, the water contact angle of the modified membrane was reduced drastically from 58.23° to 19.95°, and surface roughness and negative charge also decreased. Moreover, the water flux and salt rejection performances of the modified membrane improved simultaneously. The hydrophilic polyolefin network exhibited the same structure and function as those of neural networks, through which water molecules, but not salts, could pass through nanoscale water channels formed by polymerization. Then, contaminant rejection rates using TFC or modified membranes for textile wastewater treatment were investigated. The modified membrane yielded high rejection (>99%) of ion salts and high chemical oxygen demand removal (>99.3%) of organics with low molecular weights. Apart from its excellent anti-fouling property, the modified membrane was also satisfactorily stable for long-term separation. The integration of low-cost, high-performance, and facile strategy indicates the potential application of the proposed membrane for textile wastewater treatment.
研究领域:
材料科学
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环境工程
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膜技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Junfeng Zheng,Rui Zhao,Adam A. Uliana,Yanyan Liu,Damien de Donnea,Xin Zhang,Daliang Xu,Qieyuan Gao,Pengrui Jin,Yanlin Liu,Alexander Volodine,Junyong Zhu,Bart Van der Bruggen
A precise separation of organic dyes and inorganic salts is a prerequisite for zero liquid discharge of saline textile wastewater. The development of loose nanofiltration (LNF) membranes with customized nanoscale pores and high water permeance is expected to address this challenge. Herein, a new LNF membrane is reported, fabricated via a scalable interfacial polymerization (IP) approach between resveratrol and trimesoyl chloride (TMC) on a Kevlar substrate. The optimal resveratrol/TMC membrane exhibited an ultra-high pure water permeance (121.1 L −1 m −2 h −1 bar −1 ), high dye rejection (99.4% for 200 ppm of Congo Red), and low salt rejection (4.2% for NaCl and 9.8% for Na 2 SO 4 ). The chemical compositions, surface properties, and morphologies of the LNF membranes were characterized to elucidate their structure–property-performance relationships. The homogeneous diffusion of resveratrol to the water/hexane interface and the appropriate stoichiometry of the two monomers contribute to the formation of an ultra-thin (35–45 nm) and hydrophilic composite membrane, which allows the membrane to attain a high water permeance. The LNF membrane additionally maintains excellent anti-fouling properties during filtration of organic dye solutions, primarily as a result of the high hydrophilicity, negative charge density, and smoothness of the membrane surface. Importantly, the novel LNF membrane also retains stability after washing with ethanol and acetone, owing to the cross-linked polyphenol ester and the rigid phenyl backbone of the membrane surface. These results reveal the huge potential of applying resveratrol-based LNF membranes for the treatment of saline textile 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
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Nuo Cheng,Fu Deng,Jinlong Wang,Longfeng Hu,Jiaxuan Yang,Shu Jiang,Hesong Wang,Xiaofei Ma,Lei Zhao,Guibai Li,Han Zhang,Heng Liang
The membrane electrochemical reactor (MER) achieved synergistic textile wastewater treatment, alkaline solution recovery and magnesium coagulant recycling by the one-time addition of magnesium salt to the anode, solving the problems of reagent wastage and increased wastewater salinity caused by the continuous addition of chemicals in traditional treatments. In this study, the rapid adsorption and precipitation (within 3 min) of DB-86 in the cathode chamber by the magnesium coagulant were stimulated by the hydrophobicity of DB-86, resulting from the relatively dispersed localization of negative charges on the H atoms on the molecule’s surface. The precipitated solids in the cathode effluent were recovered through an ultra-filtration process and recycled to the anode for dissolution. Effective mineralization of dyes was achieved by anode electrolysis, generating large amounts of active chlorine on its surface as an indirect oxidant, resulting in 80.15 % TOC removal after 30 min. Operational stability tests were conducted using both simulated dye wastewater and actual textile wastewater. The decolorization efficiency of the system remained at 99.9 % for simulated dye wastewater and 99.5 % for actual textile wastewater after six cycles of long-term operation. Magnesium hydroxide is re-dissolved at the anode, then passes through the ion exchange membrane into the cathode for recycling. Loss of magnesium ions occurs only at the ultra-filtration surface, achieving recovery efficiencies exceeding 95 % for simulated dye wastewater and 80 % for actual textile wastewater. The MER/Mg system in this study achieved rapid coagulation and mineralization of DB-86, along with efficient recycling of Mg 2+ ions, thus avoiding wastage of chemical sludge and reagents, and reducing chemical consumption and treatment costs.
研究领域:
环境科学
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化学工程
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水处理技术
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Li Ding,Yangzheng Huang,Le Shi,Youcai Chen,Dandan Cheng,Haoyu Zhan,Shao-Lu Li,Chunrui Wu
Loose nanofiltration (LNF) membranes prepared by hydroxyl monomers with good dye rejection and inorganic salt permeation properties have attracted significant attention for treating salt-containing textile wastewater. This study adopted interfacial polymerization (IP) method to fabricate a novel polyester LNF membrane, in which tris (4-hydroxyphenyl) phosphine oxide (THPPO) with a steric structure was employed as the solely aqueous monomer. To enhance the solubility and esterification reaction activity of THPPO, sodium hydroxide (NaOH) was specially adopted in aqueous phase, helping the development of the polyester selective layer. The findings demonstrated that the prepared ultrathin (30–38 nm) polyester selective layer exhibited a smooth surface with a negative charge. The optimal membrane LNF-0.05 exhibited a good water permeance of 20.8 L m −2 h −1 bar −1 , excellent rejection of anionic dyes (99.6 % for EBT, 99.3 % for CR, 98.8 % for DR 23, and 98.1 % for MB), and low rejection of monovalent salts (8.2 % for NaCl, 5.0 % for MgCl 2 ), showing excellent EBT/NaCl mixture selectivity as high as 221. The performance stability of the membranes was partially testified by continuous filtration process. These results confirm the significant application potential of tris-phenol phosphine oxide-based polyester LNF membrane for treating saline textile wastewater.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2021
·
IF 5.909
Ximing Guo,Xueyao Tian,Xin Xu,Jinru He
In the manuscript, we developed a novel strategy to effectively improve the visible light absorption of Ti-based MOF by extending the conjugated degree of organic ligands in Ti-based MOFs. The freebased 5,10,15,20-tetraphenylporphyrin (H 2 TCPP) as organic linkers was used to facilely synthesize Ti-based MOFs (Ti-TiTCPP MOFs). The structural, morphologic and optical properties of Ti-TiTCPP MOFs were investigated. Ti-TiTCPP MOFs was applied to photocatalytic degradation of rhodamine B(RhB) and the photocatalytic degradation performances of Ti-TiTCPP MOFs were compared with that of NH 2 -MIL-125(Ti) MOFs under mercury lamp , xenon lamp and daylight lamp irradiation, respectively. The results showed the photocatalytic degradation performances of Ti-TiTCPP MOFs are superior to that of NH 2 -MIL-125(Ti) MOFs in visible region. Furthermore, the photocatalytic degradation mechanism of Ti-TiTCPP MOFs was investigated in detail based on the electrochemical and photoelectrochemical results associated with previously reported photocatalytic degradation mechanisms of NH 2 -MIL-125(Ti). The possible electrochemical and photoelectrochemical reactions and the changes of Gibbs free energy were analyzed. The degradation possible pathways of RhB and the emerging main intermediate contaminants were carefully analyzed by HPLC-HRMS under the present different solution parameters. And then the photocatalytic system based on Ti-TiTCPP MOFs was successfully applied to deal with real industrial textile wastewaters.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 12
·e56634
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IF 2.8
Jianping Zhou,Jingtao Cui,Shangsong Han,Shenghui Liu,Jintuan Zhang,Biqin Chen,Yuxia Li
The discharge of textile wastewater containing pollutants could cause serious environmental pollution. The use of loose nanofiltration membranes to separate dyes and salts from textile wastewater had great significance. This study used β-cyclodextrin (β-CD-AAm) as a novel porous aqueous monomer for IP reaction, and prepared a novel membrane for filtering textile wastewater. Due to the porous structure of β-CD-AAm, it could separate dyes and salts, increase water flux and mechanical property. Additionally, azobenzene was added to the bowl-like structure of β-CD-AAm to endow the nanofiltration membrane with renewable functions. The permeability increased from 27 to 75 L/m 2 ·h, and increased by 177.8%. It also increased the retention rate of methyl blue from 95.9% to 98.9%, and decreased the rejection rate of Na 2 SO 4 from 22.3% to 10.1%; the separation selectivity a of dye and salts increased from 35.2 to 82.7. The effects of porous aqueous phase monomer β-CD-AAm on diffusion speed of aqueous phase were demonstrated via ultraviolet light test and mean square displacement, demonstrating the influence of β-CD-AAm on the polyamide layer structure and property of the membrane. This provides a new approach for using new aqueous monomers to produce porous nanofiltration membranes for the treatment of textile wastewater.
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
Journal of Cleaner Production
·
2022
·
IF 11.072
Jing Liu,Airong Liu,Ji Li,Shiting Liu,Wei-xian Zhang
Rapid and efficient decolorization is great challenging for wastewater treatment , and nanoscale zero-valent iron (nZVI) was recognized as an environmental-friendly and economical-cost agent for effective decolorization of textile wastewater . Herein, the performance and mechanisms of Congo Red (CR) wastewater treatment with nZVI were probed in a continuous flow nano-iron reactor (NIR), which included the “reaction, separation and reuse” process. CR wastewater (initial concentration up to 500 mg·L −1 ) was successfully decolorized by nZVI in the NIR during the 125 d continuous running period. The color removal efficiency achieved 98.59%, accompanied with a large removal capacity of 6.64 mg-CR/g-nZVI at an average low nZVI dose (0.075 g-nZVI/L-CR). The decolorization mechanism of CR wastewater was ascribed to the chromophore groups (–N=N–) breaking, the final productive products were 4-Amino-1-naphthalene sulfonic acid and 4,4′-diaminodiphenyl, which were proved by liquid chromatography coupled to mass spectrometry, X-ray photoelectron spectroscopy, UV–Vis spectrophotometer, infrared spectroscopy . Decolorization efficiencies were up to 77.82% and 87.95% on average for two actual textile wastewater in the NIR, during the 83.5 h and 445 h continuous running period. This work provides proof that the nZVI technology can offer tremendous potential for the decolorization of recalcitrant organic dye wastewater.
研究领域:
环境科学
·
废水处理技术
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Zihan Liu,Junwen Ding,Shirong Li,Longfeng Hu,Heng Liang,Langming Bai
Desalination of textile wastewater is an effective measure to reduce environmental pollution and realize resource reuse. Graphene oxide (GO) membrane is regarded as one of the first choices for textile wastewater desalination due to its chemical resistance, strong mechanical properties, and adjustable interlayer channels. Here, we propose a polyaniline (PANI) particle incorporation strategy and use the dedoping effect of polyaniline to provide an additional permeation pathway through one-step alkali treatment to accelerate water molecule transport. Polyaniline (PANI) doped with polystyrene sulfonic acid (PSS) nanoparticles were synthesized and incorporated into GO membranes, followed by crosslinking of glutaraldehyde (GA) for stability and alkali treatment for more porosity generation. The as-prepared BGO/PANI-PSS membrane with 30% PANI-PSS addition displayed a flux of 70.4 LMH/bar, 99.3%, and 4.8% rejection for Congo red and NaCl, respectively, exhibiting 5.9 times higher permeability than that of GO membrane with similar dye rejection. This work provides a facile strategy for designing GO composite membranes for dye/salt separation.
研究领域:
材料科学
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环境工程
✓ 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）