Simultaneous removal of antimony, chromium and aniline by forward osmosis membrane: Preparation, performance and mechanism

Shao, Mengyu; Li, Yulin; Meng, Lijun; Guo, Jili; Gao, Yanan; Liu, Yanbiao; Huang, Manhong

doi:10.1016/j.desal.2021.115363

Cited by 33 publications

(10 citation statements)

References 57 publications

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“…It can be seen that the reverse salt flux was below 0.9 g/m 2 h for all the developed membranes and all NaCl concentrations. Higher NaCl concentration in the DS contributed to a higher reverse flux, which is in agreement with the literature (Shao et al, 2021). In addition, reverse salt flux had a reverse trend to that of the water flux.…”

Section: Resultssupporting

confidence: 93%

Preparation and characterization of forward osmosis cellulose acetate butyrate/OH‐functionalized multiwalled carbon nanotube membrane for the concentration of bitter orange juice

Bidaki

Mousavi

Kiani

et al. 2023

J Food Process Engineering

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As an essential process in food industry, fruit dewatering should have the least impact on the nutritional values of the product. In this research, bitter orange juice was concentrated via the forward osmosis (FO) process for the first time. For this purpose, cellulose acetate butyrate (CAB)/OH-functionalized multiwalled carbon nanotubes (FMWCNTs) membranes were prepared using various nanofiller concentrations. The obtained membranes were characterized in terms of their morphology, porosity, water contact angle, chemical structure, tensile properties, and pure water flux. During the FO process, NaCl solution was applied as the draw solution (DS), and the concentration of NaCl was varied (1.2, 2.2, and 4.2 M) to assess its effect on the process performance. Increasing FMWCNTs loading in the casting solution up to 0.3 wt% boosted the membrane porosity, hydrophilicity, elastic modulus, and pure water flux. The CAB membrane incorporated with 0.3 wt% nanofiller and the DS with 4.2 M NaCl concentration represented the highest water flux (29.93 L/m 2 h) in the FO experiment and provided the maximum turbidity (1545 NTU) and viscosity (4.64 cP) of the treated feed. According to the obtained results, the developed CAB/FMWCNTs membrane proved promising in the FO concentration of fruit juice. Practical ApplicationsBitter orange juice was concentrated via the FO process using the developed CAB/OH-FMWCNTs membranes. According to the results, water flux, and thus the dewatering efficiency increased and reached its highest value using the CAB membrane incorporated with 0.3% FMWCNTs. Since membrane processes operate at low temperatures and do not deteriorate the concentrate quality, FO concentration of bitter orange juice using the membrane modified in this study can be a superior alternative to the conventional thermal methods.

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Section: Resultssupporting

confidence: 93%

Preparation and characterization of forward osmosis cellulose acetate butyrate/OH‐functionalized multiwalled carbon nanotube membrane for the concentration of bitter orange juice

Bidaki

Mousavi

Kiani

et al. 2023

J Food Process Engineering

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“…The analytical methods with the corresponding standard followed for the water quality indexes are summarized in Table 2. Distillation-titration method China trade standard Q/YZJ10-03-02-2000 1 The unit is molarity (mmol/L) or mass concentration (mg/L) converted according to acetic acid.…”

Section: Methodsmentioning

confidence: 99%

“…Printing and dyeing wastewater is a type of industrial wastewater that is very difficult to treat, characterized by high colority, complex composition and poor biodegradability [1]. Technologies including physical-chemical methods, biological methods and the combination of these methods have been applied for its treatment [2].…”

Section: Introductionmentioning

confidence: 99%

Pilot-Scale Anaerobic Treatment of Printing and Dyeing Wastewater and Performance Prediction Based on Support Vector Regression

Wang

Chen

et al. 2022

Fermentation

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Printing and dyeing wastewater is characterized with complex water quality and poor biodegradability. In this study, a pilot-scale anaerobic baffled reactor (ABR) with packing was verified to effectively degrade the complex organic pollutants in the wastewater through the hydrolysis and acidification of anaerobic microorganisms. At a hydraulic retention time (HRT) of 12 h and an organic loading rate (OLR) of 2.0–2.5 kg COD/(m3·d), the ABR stabilized the fluctuation range of pH and achieved an average colority removal rate of 10.5%, which provided favorable conditions for subsequent aerobic treatment. During the early operation period, the reactor increased the alkalinity of the wastewater; after 97 days of operation, the volatile fatty acid (VFA) content in the wastewater decreased. To demonstrate the suitability of the support vector regression (SVR) technology in predicting the performance of the reactor, two SVR algorithms with three kernel functions were employed to relate the chemical oxygen demand (COD) removal rate to its influencing factors, and the predictions of both the training and validation groups agreed with the measurements. The results obtained from this study can contribute to the design and optimal operation of the anaerobic treatment project of the industrial wastewater treatment plant.

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“…In this work, a lab-scale FO system with an effective membrane area of 3 cm × 4 cm was employed to test the FO performance of CTA membranes, and the feed and draw solutions were circulated through the membrane cell counter using two variable speed peristaltic pumps . The FO device is shown in Figure .…”

Section: Methodsmentioning

confidence: 99%

Resources Recycle of Printing and Dyeing Wastewater: UF/FO Hybrid System Optimization and TPA Recovery

et al. 2022

Self Cite

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Printing and dyeing wastewater has characteristics of high pH, poor biodegradability, complex composition, and a large amount of water, which means it remains a daunting environmental issue. The development of efficient and economic printing and dyeing wastewater treatment technology has gained considerable interest in the field of environmental protection. The performance of ultrafiltration/ forward osmosis (UF/FO) hybrid system focused on recycling valuable materials in actual printing and dyeing wastewater was investigated. The effects of pressure, temperature, membrane orientation, and feed pH on membrane performance were also studied. The results showed that the optimal pressure and temperature (T) are 0.15 MPa and 25 °C, respectively; active-layer facing feed solution (AL-FS) mode at pH 7 was used for a UF/FO hybrid system. The recovery of terephthalic acid (TPA) was 99.78% under pH 4. This paper provided a resourceful proposal for the treatment of printing and dyeing wastewater.

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Simultaneous removal of antimony, chromium and aniline by forward osmosis membrane: Preparation, performance and mechanism

Cited by 33 publications

References 57 publications

Preparation and characterization of forward osmosis cellulose acetate butyrate/OH‐functionalized multiwalled carbon nanotube membrane for the concentration of bitter orange juice

Preparation and characterization of forward osmosis cellulose acetate butyrate/OH‐functionalized multiwalled carbon nanotube membrane for the concentration of bitter orange juice

Pilot-Scale Anaerobic Treatment of Printing and Dyeing Wastewater and Performance Prediction Based on Support Vector Regression

Resources Recycle of Printing and Dyeing Wastewater: UF/FO Hybrid System Optimization and TPA Recovery

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