In this work, a novel Pt/ZnO/SiC filter was successfully prepared by first coating ZnO nanoparticles on a silicon carbide filter by a sol–gel process and then loading Pt nanoparticles on the ZnO layer through impregnation. The microstructure, crystal morphology, composition and elemental valence of the prepared filter were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). It was found that the ZnO coating layer improved the dispersity of the Pt nanoparticles and significantly enhanced the catalytic performance. Toluene was used as a model volatile organic compound and reached complete conversion of up to 100% over the porous tubular Pt/ZnO/SiC material at a filtration velocity of 0.72 m/min within 240 h at 210 °C. The synthetic ceramic filter presented a good capacity for the catalytic oxidation of volatile organic compounds (VOCs), and accordingly, a simple approach is suggested here for preparing this catalyst on a support to increase the catalytic efficiency.

In this work, a novel Pt/ZnO/SiC filter was successfully prepared by first coating ZnO nanoparticles on a silicon carbide filter by a sol–gel process and then loading Pt nanoparticles on the ZnO layer through impregnation. The microstructure, crystal morphology, composition and elemental valence of the prepared filter were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). It was found that the ZnO coating layer improved the dispersity of the Pt nanoparticles and significantly enhanced the catalytic performance. Toluene was used as a model volatile organic compound and reached complete conversion of up to 100% over the porous tubular Pt/ZnO/SiC material at a filtration velocity of 0.72 m/min within 240 h at 210 °C. The synthetic ceramic filter presented a good capacity for the catalytic oxidation of volatile organic compounds (VOCs), and accordingly, a simple approach is suggested here for preparing this catalyst on a support to increase the catalytic efficiency.

Commercial nanofiltration (NF) membranes have been used to separate dyes and salts in industry; however, NF membrane’s high rejection to divalent salts (i.e., Na2SO4) leads to a reduction of salt recovery. In this study, a tight ultrafiltration (t-UF) ceramic membrane (MWCO 8800 Da) is proposed to fractionate dyes and mixed salts (NaCl/Na2SO4) for textile wastewater treatment. Performance of the t-UF ceramic membrane and DK polymeric membrane (from GE) has been compared regarding to permeability, retention of reactive dyes, and permeation of salts. The t-UF ceramic membrane presents better permeability, competitive rejection of dye molecules (>98%), and reduced rejection of NaCl (<10%) and Na2SO4 (<30%) in comparison with DK membrane; the pure water permeability of t-UF membrane is at least 6 times that of DK membrane. In particular, the operation parameters (TMP, temperature, and pH) and solution environment (concentration and charges) have been intensively evaluated for dye/dual-salts separation efficiency in the membrane process. It also reveals that the t-UF ceramic membrane has performed negative rejection to chloride ions at low operating pressure in the dye and NaCl/Na2SO4 solution due to the electrostatic Donnan effect. Concentration of salt, valence of inorganic ions, and charge of dyes are found as having a significant effect on membrane separation performance. In conclusion, the strong retention of dyes and free permeation of salts (i.e., low retention) by the t-UF ceramic membrane proves that it can be applied to desalinate dyeing wastewater of high salinity and recover dyes and salts separately.

•Higher conversion of MEK and selectivity of MEKO were obtained.•The mass transfer of phases was enhanced with the change of feeding mode.•The lifetime of catalyst activity could be prolonged effectively.The liquid-phase ammoximation of methyl ethyl ketone (MEK) with ammonia (NH3), hydrogen peroxide (H2O2) over titanium silicalite-1 (TS-1) was attempted to efficiently produce methyl ethyl ketone oxime (MEKO) in a ceramic membrane reactor where a ceramic membrane was used to distribute H2O2. Under optimized conditions, the MEK conversion and MEKO selectivity could reach 99.6% and 99.0%, respectively. Compared with the general ammoximation of MEK which took tert-butyl alcohol (TBA) as an organic solvent, the higher conversion of MEK and selectivity of MEKO were obtained at lower molar ratio of NH3 to MEK in the ceramic membrane reactor. This was related to the change of feeding mode of NH3 and the introduction of membrane distributor in the reactor to provide micron-sized drops of H2O2 into the reaction system and enhance the mass transfer of phases. The stability of TS-1 was also explored and results showed that TS-1 catalysts deactivated rapidly among ammoximation. Efforts were thus made in order to find out the dominating reason of catalyst deactivation. The results showed that the absence of TBA aggravatingly resulted in the deposition and pore blocking of TS-1, resulted in catalyst deactivation. Through high-temperature calcination, the lifetime of catalyst activity could be prolonged effectively.Download high-res image (125KB)Download full-size image

•The NaA zeolite residue was recycled as the sintering additive of PSCS.•With NaA residue added, the PSCS was successfully prepared at a low temperature.•The prepared PSCS showed enhanced air purification performance and stability.NaA zeolite membrane which exhibits remarkable selectivity for dehydration of organic compounds has been widely applied in industrial scale. Typical preparation of NaA zeolite membrane involves the hydrothermal synthesis of the NaA zeolite and the formation of a zeolite membrane layer on a substrate. However, the preparation of NaA membrane generates large quantity of zeolite residues in the synthesis solution. In this paper, the NaA residues from the preparation of the NaA zeolite membrane was recovered and reused as fillers for the fabrication of porous SiC membrane support (PSCS). The effect of loading of NaA residue and sintering temperature on the porosity, pore size, gas permeability and bending strength of PSCS were investigated. The results showed that the addition of 8% of NaA residue in PSCS led to the decrease in sintering temperature from 2000 to 1200 °C, as compared to sintering pure SiC powder. Also, the gas permeability and the bending strength were significantly increased to 1200 m3 / (m2 h kPa) and 25 MPa, respectively compared to 600 m3 / (m2 h kPa) and 2.5 MPa of the pristine PSCS without NaA residue. Furthermore, because of the high temperature reaction to form NaAlSi3O8, the PSCS loaded with NaA residue showed remarkable thermal shock resistance and resistance to acid and alkali corrosion. The successful use of NaA residue in the preparation of the PSCS provided a more economical process for the fabrication of PSCS using lower cost raw material and more thermally efficient sintering condition.

•SiC whisker inhibits particles penetrated into supports in spraying process.•Switching sintering gas atmosphere to obtain an anti-corrosive membrane layer.•SiC neck-bond formed by in-situ reaction to improve its thermal resistance.Ceramic membrane such as SiC membrane was widely used in gas filtration to remove dust. However, oxidation of SiC is unavoidable when sintered in air, which limited the SiC membrane application. How to controlling oxidation of SiC to prepare non-oxide SiC membrane is an important industrial requiring. In this study, a SiC whisker layer was used to modify the surface pore channels of SiC supports before coating. Then a layer of SiC membrane was prepared on the surface of the SiC supports using a spray-coating procedure. The coated samples were sintered using a specific sintering procedure by switching sintering atmospheres over different temperature ranges to produce a homogeneous, defect-free microstructure of a non-oxide SiC membrane. The average pore size of the SiC membrane was 2.31 µm. In addition, the membrane displayed a 31% increase in nitrogen flux compared to the membrane without SiC whisker layer. The SiC membrane exhibited excellent chemical and thermal resistance owing to the properties of the membrane compositions (mullite, ZrSiO4, CaSiO3 and SiC) that have a matched thermal expansion coefficient. The SiC membrane effectively reduced the dust concentration from 250 mg m−3 to 0.12 mg m−3 in the filtration tests with dust of d50 = 0.3 µm, exhibiting filtration efficiency of 99.95% when the gas filtration permeability of 105.2 m3 m−2 h−1 kPa−1.

To fabricate a novel photocatalyst material with high efficiency, ZnO seeds were uniformly deposited on carbon fibers (CFs) via atomic layer deposition (ALD) followed by hydrothermal growth of ZnO nanorods (NRs). Then Pt particles were dispersed on ZnO NRs using the magnetron sputtering method, and the grain size of Pt particles was in the range of 2–5 nm. Significantly, the resultant Pt@ZnO NRs/CFs composites exhibited better photocatalytic performance than normal ZnO NR coated CFs as demonstrated in the degradation of methyl orange (MO) solution, which may be due to the synergistic effect between the Pt nanoparticles and ZnO NRs. After a period of light irradiation, the degradation rates of methyl orange (MO) dye solution are as follows: 72% for ZnO NRs/CFs and 99.8% for Pt@ZnO NRs/CFs. In addition, this novel hierarchical photocatalyst can be easily recycled with good performance and stability.

To fabricate a novel photocatalyst material with high efficiency, ZnO seeds were uniformly deposited on carbon fibers (CFs) via atomic layer deposition (ALD) followed by hydrothermal growth of ZnO nanorods (NRs). Then Pt particles were dispersed on ZnO NRs using the magnetron sputtering method, and the grain size of Pt particles was in the range of 2–5 nm. Significantly, the resultant Pt@ZnO NRs/CFs composites exhibited better photocatalytic performance than normal ZnO NR coated CFs as demonstrated in the degradation of methyl orange (MO) solution, which may be due to the synergistic effect between the Pt nanoparticles and ZnO NRs. After a period of light irradiation, the degradation rates of methyl orange (MO) dye solution are as follows: 72% for ZnO NRs/CFs and 99.8% for Pt@ZnO NRs/CFs. In addition, this novel hierarchical photocatalyst can be easily recycled with good performance and stability.

Polytetrafluoroethylene (PTFE) membrane is an extensively used air filter, but its oleophilicity leads to severe fouling of the membrane surface due to organic aerosol deposition. Herein, we report the fabrication of a new amphiphobic 1H,1H,2H,2H-perfluorodecyl acrylate (PFDAE)-grafted ZnO@PTFE membrane with enhanced antifouling functionality and high removal efficiency. We use atomic-layer deposition (ALD) to uniformly coat a layer of nanosized ZnO particles onto porous PTFE matrix to increase surface area and then subsequently graft PFDAE with plasma. Consequently, the membrane surface showed both superhydrophobicity and oleophobicity with a water contact angle (WCA) and an oil contact angle (OCA) of 150° and 125°, respectively. The membrane air permeation rate of 513 (m3 m–2 h–1 kPa–1) was lower than the pristine membrane rate of 550 (m3 m–2 h–1 kPa–1), which indicates the surface modification slightly decreased the membrane air permeation. Significantly, the filtration resistance of this amphiphobic membrane to the oil aerosol system was much lower than the initial one. Moreover, the filter exhibited exceptional organic aerosol removal efficiencies that were greater than 99.5%. These results make the amphiphobic PTFE membranes very promising for organic aerosol-laden air-filtration applications.Keywords: amphiphobic; atomic layer deposition; organic aerosol; plasma; PTFE membrane; ZnO

•Pd@ZIF-8 nanocomposites were successfully prepared via an assembly method.•Lower Pd/Zn2+ and lower Hmim/Zn2+ molar ratios favor the Pd encapsulation.•Higher Pd/Zn2+ and lower Hmim/Zn2+ molar ratios favor better catalytic activity.Pd@ZIF-8 nanoparticles with uniform size and morphology were prepared via an assembly method that enables the crystallization of ZIF-8 in methanol in the presence of polyvinylpyrrolidone (PVP)-modified Pd nanoparticles. The molar ratios of Pd/Zn2+ and 2-methylimidazole (Hmim)/Zn2+ are important parameters affecting the physical and catalytic properties of the Pd@ZIF-8. The catalytic activities of the hybrid catalysts were evaluated by the hydrogenation of p-nitrophenol to p-aminophenol. The results indicate that the increase of Pd loading and p-nitrophenol conversion can be tuned by adding more amounts of PVP-Pd colloid, but a suitable amount of PVP-Pd (Pd/Zn2+ ≤ 0.012) is helpful to the control of particle size of Pd@ZIF-8 and encapsulation of the Pd nanoparticles within the ZIF-8 crystals. Pd@ZIF-8 catalysts prepared with excessive or equal molar of Hmim relative to Zn2+ have similar morphology and uniform particle size, where the Pd nanoparticles are fully confined within the ZIF-8 crystals without aggregation. Furthermore, the Pd@ZIF-8 catalysts exhibit the better catalytic performance for the p-nitrophenol hydrogenation owing to the high loading of well-dispersed Pd nanoparticles with the decreased Hmim/Zn2+ molar ratio. This work would aid the development of high-performance Pd@ZIF-8 catalysts.Pd@ZIF-8 has been successfully synthesized via an assembly method, and the molar ratios of Pd/Zn2+ and Hmim/Zn2+ significantly affect its microstructure and catalytic activity in the hydrogenation of p-nitrophenol to p-aminophenol.

Gas distributor configurations were optimized for the direct synthesis of methychlorosilanes in a fluidized bed membrane reactor. The Syamlal–O’Brien drag model was optimized to allow reasonable prediction of solid volume fraction, and the influences of opening area ratio and the number of holes of gas distributor on hydrodynamics were investigated by computational fluid dynamics simulation. The results indicated that a gas distributor with a 0.53% opening area ratio and 19 holes exhibited a steadier radial solid volume fraction distribution and lower dead zone area ratio. The effects of gas distributor configuration on the Rochow reaction were also tested experimentally, and dimethydichlorosilane selectivity and silicon conversion were both increased. This suggested that the hydrodynamic behavior using a gas distributor with Φ = 0.53% and n = 19 is beneficial for a well-distributed heat-transfer coefficient. Consequently, Φ = 0.53% and n = 19 were proposed as the best gas distributor configuration, and the reaction yield was 7.3% higher.

The Pd@ZIF-L catalysts with uniform crosshair-star shape and a size of about 20 μm were fabricated by an assembly method that enables the crystallization of ZIF-L in water with the presence of polyvinylpyrrolidone (PVP)-stabilized Pd nanoparticles (NPs). The physical and catalytic properties of the Pd@ZIF-L catalysts are greatly affected by the molar ratios of 2-methylimidazole (2-MeIM)/Zn2+ and PVP/Zn2+. Their catalytic activities were evaluated by the catalytic reduction of p-nitrophenol to p-aminophenol. The results indicate that a lower molar ratio of 2-MeIM/Zn2+ is beneficial for the increase of Pd loading and p-nitrophenol conversion, but a suitable molar ratio (≥20) of 2-MeIM/Zn2+ is helpful to the crystallization of ZIF-L and the encapsulation of the Pd NPs within the ZIF-L framework. The Pd@ZIF-L catalyst synthesized at a lower PVP/Zn2+ molar ratio has higher Pd loading and p-nitrophenol conversion due to the easy adsorption of PVP–Pd NPs onto the ZIF-L surfaces. This work would aid the development of high-performance Pd@ZIF-L catalysts.

An efficient and reusable catalyst was developed by loading palladium (Pd) nanoparticles on a ceramic membrane modified with a ZnO nano-coating. The microstructures of the as-prepared Pd-loaded ceramic membranes were characterized by FESEM, EDS, ICP, XPS and HRTEM. Their catalytic properties in liquid-phase p-nitrophenol reduction to p-aminophenol were evaluated. A comparative study was also made with the Pd nanoparticles deposited onto the ceramic membrane without any modification. The XPS and HRTEM results indicate that the ZnO coating can provide strong Pd–Zn interactions on the ceramic membrane, resulting in higher catalytic stability with similar catalytic activity as compared to that without modification. It was found that the leaching and agglomeration of Pd nanoparticles should be responsible for the deactivation of Pd-loaded ceramic membranes. This work would aid the development of membrane catalysts with higher catalytic performance.

The gas permeability of SiC porous ceramics (SCPCs) is typically proportional to the open porosity. However, an increase in open porosity can decrease the bending strength due to weak contact between particles. In this study, high-permeability SCPCs were prepared using a combination method of dry press forming and in situ reaction bonding. The resulting materials contained doping mullite fibers as a reinforcing agent and maintained sufficient bending strength. The open porosity, mechanical strength, microstructure, gas permeability and thermal shocking resistance were systematically investigated. The presence of the mullite fibers (4%) led to increases in open porosity and bending strength to 46.8% and 15.7 MPa after sintering at 1450 °C for 4 h. Additionally, gas permeability of 1600 m3/m2·h·kPa was attained in ceramic wafer and a high gas permeability coefficient of 1.64 × 10−11 m2 was achieved, superior values than most porous ceramic materials were reported. The close thermal expansion coefficient between the mullite fibers and silicon carbide confers good thermal shock resistance. The bending strength of 14.5 MPa was maintained after 60 cold-hot cycles (0–800 °C). The new SCPCs show great promise for use as next generation hot-gas filters.

•A new Pd@ZIF-L catalyst with a unique crosshair-star shape was synthesized.•The microstructure of Pd@ZIF-L strongly depends on the synthesis conditions.•Pd@ZIF-L favors the conversion of alkenes with larger molecular sizes.•Pd@ZIF-L exhibits molecule-size-selectivity and anti-leaching performance.A new Pd@ZIF-L hybrid catalyst having a unique crosshair-star shape with a size of about 20 μm was synthesized, in which a two-dimensional layered zeolitic imidazolate framework-L (ZIF-L) was used as a support to immobilize palladium nanoparticles via an assembly method. The hybrid catalyst with unique cushion-shaped cavities between layers with a size of 6.64 Å can be used for the diffusion of specific reactants not achievable by other ZIF systems such as ZIF-8. The crystal structure and morphology of Pd@ZIF-L are strongly dependent on the synthesis conditions. Palladium nanoparticles with an average size of 3 nm are homogeneously encapsulated in the ZIF-L crystals. The as-synthesized Pd@ZIF-L catalyst favors the conversion of alkenes with larger molecular sizes, and exhibits excellent molecule-size-selectivity and anti-leaching performance.A new Pd@ZIF-L catalyst with a unique crosshair-star shape has been synthesized, favors the conversion of alkenes with larger molecular sizes, and exhibits excellent molecule-size-selectivity and anti-leaching performance.

On the basis of biological ion channels, we constructed TiO2 membranes with rigid channels of 2.3 nm to mimic biomembranes with flexible channels; an external electric field was employed to regulate ion transport in the confined channels at a high ionic strength in the absence of electrical double layer overlap. Results show that transport rates for both Na+ and Mg2+ were decreased irrespective of the direction of the electric field. Furthermore, a voltage-gated selective ion channel was formed, the Mg2+ channel closed at −2 V, and a reversed relative electric field gradient was at the same order of the concentration gradient, whereas the Na+ with smaller Stokes radius and lower valence was less sensitive to the electric field and thus preferentially occupied and passed the channel. Thus, when an external electric field is applied, membranes with larger nanochannels have promising applications in selective separation of mixture salts at a high concentration.Keywords: confined channel; electric field; ion transport; TiO2 membrane; TiO2 nanochannel;

SiC porous ceramics (SCPCs) were fabricated by a dry press forming method and in situ reaction-bonding technique using ZrO2 as sintering aids, activated carbon as pore-forming agent, and SiC whiskers as reinforcing agent. The effects of the amount of SiC whiskers on the porosity, bending strength, microstructure, and gas permeability of the SCPCs were investigated. The results showed that without incorporated SiC whiskers, the bending strength was 9.7 MPa for the SCPCs sintered at 1550 °C, while the bending strength of the SCPCs with 3.3 wt % SiC whiskers reached 28 MPa, nearly a 3-fold increase in bending strength over that of pristine SCPCs. The SiC whiskers-enhanced ceramic supports exhibited a porosity of 44.2% and an average pore size of 14.6 μm. Moreover, the samples also showed a gas permeability of 270 m3/m2·h·kPa, which is 1.7 times higher than that of the pristine SCPCs. The bending strength remained high after 18 cold–hot cycles (800 °C), indicating good thermal shock resistance.

A novel dual-membrane airlift reactor with a ceramic outer-membrane as a reactant ammonia distributor and another ceramic inner-membrane as a catalyst separator was developed for the cyclohexanone ammoximation over titanium silicalite-1(TS-1) without the addition of extra solvent such as tert-butanol, resulting in no need of separation step for solvent. It was interesting to find that the introduction of membrane distribution could increase the selectivity of cyclohexanone oxime by 18%, because many tiny ammonia bubbles could be produced with a membrane distributor to strengthen the mix of gas phase and organic phase. A blowing process was introduced into the membrane reactor to overcome the membrane fouling and decrease the filtration resistance. The operation conditions were optimized, and the conversion and selectivity remained stable at about 87% and 76% in a 25 h continuous run, respectively. Our research verifies the advantages of a dual-membrane reactor in a continuous ammoximation.

A new route towards phenol production by one-step selective hydroxylation of benzene with hydrogen peroxide over ultrafine titanium silicalites-1 (TS-1) in a submerged ceramic membrane reactor was developed, which can maintain the in situ removal of ultrafine catalyst particles from the reaction slurry and keep the process continuous. The effects of key operating parameters on the benzene conversion and phenol selectivity, as well as the membrane filtration resistance were examined by single factor experiments. A continuous reaction process was carried out under the obtained optimum operation conditions. Results showed that the system can be continuously and stably operated over 20 h, and the benzene conversion and phenol selectivity kept at about 4% and 91%, respectively. The ceramic membrane exhibits excellent thermal and chemical stability in the continuous reaction process.A one-step continuous synthesis route of phenol by hydroxylation of benzene with hydrogen peroxide over ultrafine TS-1 in a submerged ceramic membrane reactor is developed. The operation conditions have important impacts on the benzene conversion, phenol selectivity and filtration resistance. The optimum operation conditions can be obtained by balancing their effects on the catalytic properties and separation efficiency. The benzene hydroxylation with hydrogen peroxide over TS-1 can be continuously run over 20 h in the submerged ceramic membrane reactor and the ceramic membrane exhibits excellent stability in the reaction system.Download full-size image

•Ceramic nanofiltration membrane was used for desalination of dye solutions containing NaCl and Na2SO4.•Dye EBT solutions with mixture of salts showed higher flux than that with single salt.•Self-aggregation and salting-out due to decrease of zeta potential of dye were responsible for the high rejection of EBT.•Ceramic nanofiltration membrane showed better separation performance compared with DK and DL membranes.Removing mixture salts from dye solutions using membrane technology still need to be improved for high dye rejection and low salt rejection. In this work, ceramic membrane with pore size of 1.5 nm presented a satisfactory desalination of dye solutions containing NaCl and Na2SO4 compared with two commercial organic nanofiltration membrane elements (DK and DL). Effect of salt content, salt type, molar ratio of NaCl and Na2SO4, dye concentration and pH on performance of ceramic membrane for desalination of Eriochrome black T (EBT) were investigated. The results showed that dye rejection decreased by increasing salt content, dye concentration and solution pH. Compared with dye-NaCl solutions, a relative high flux and low rejection of dye were observed when treating dye-Na2SO4 solutions. For the mixture salt-dye solutions, the flux, which was higher than that for the single salt-dye solutions, first increased then decreased with decreasing CNaCl/CNa2SO4 due to the change of structure of cake layer. Supper-molecule aggregates of EBT formed by hydrogen-bond is mainly responsible for the high rejection of EBT (> 99%) at acid conditions. The rejection of NaCl and Na2SO4 was below 20% and 40%, respectively. These promising results demonstrates that the new ceramic membrane has a potential application in dye purification.

The sintering temperature of porous silicon carbide ceramic support (PSCS) is typically higher than 1500 °C. In this paper, sodium dodecyl benzene sulfonate (SDBS) was used as a sintering additive to fabricate PSCS with high gas permeance and high bending strength at a sintering temperature less than 1200 °C. The PSCS was prepared by the dry pressing method followed by in-situ reaction. The effects of SDBS loading on the porosity, bending strength, gas permeation performance, and microstructure of the PSCS were investigated. The results showed that without SDBS, the required sintering temperature was as high as 1550 °C and resulted in a bending strength of 6.5 MPa but the sintering temperature decreased to 1150 °C with 8% SDBS and the bending strength increased to 16 MPa. The main reason was that SDBS decomposed into Na2O which reacted with SiO2 and ZrO2 to form strong bonding connections. The prepared PSCS with SDBS also showed good gas permeance of 900 m3/(m2 h kPa), higher than the 750 m3/(m2·h·kPa) without SDBS. This work describes the effective use of SDBS as a ceramic additive to reduce sintering temperature, while achieving high gas permeation and bending strength. The use of the low cost and commercially available SDBS produces an excellent ceramic filter with much lower energy consumption, and could also be implemented in other ceramic systems.

•Analyze fouling mechanism of ceramic membrane used in treating desizing wastewater•Develop a cleaning strategy by studying interaction mechanism between cleaning agents and foulants•Both hydrolysis of NaOH and solubilization of SDBS micelles play a significant role in cleaning process.Ceramic ultrafiltration membranes were used to treat desizing wastewater for recycling. Both the fouling mechanisms and the regeneration of fouled membranes obtained from an industrial park were studied. The fouling was mainly caused by polymethyl acrylate (PMA) deposition on membrane surface and blockage in membrane pores. A cleaning strategy and solution composed of NaOH and sodium dodecyl benzene sulfonate (SDBS) were developed based on analysis of fouling resistance and interaction between cleaning agents and foulants, respectively. The hydrolysis of NaOH and solubilization of SDBS micelles, which decreased the adhesion between foulants and membrane surface, played an important role during the cleaning. The flux of the membrane could be well recovered with the cleaning solution. The cleaning efficiency was sensitive to the concentration of SDBS (CSDBS) and temperature (T), and was also affected by transmembrane pressure (TMP), crossflow velocity (CFV) and operation time of the permeate line (OTPL). The optimized cleaning condition was CSDBS = 0.30 wt.%, TMP = 0.10 MPa, CFV = 3 m/s, T = 60 °C, and OTPL = 80 min. The dynamic and chemical interaction between chemical agents, foulants and the membrane was also studied in this research. The methods were successfully applied to the industry.