Control of protein (BSA) fouling by ultrasonic irradiation during membrane distillation process

Hou, Deyin; Lin, Dichu; Zhao, Changwei; Wang, Jun; Fu, Chaochen

doi:10.1016/j.seppur.2016.11.047

Cited by 51 publications

(18 citation statements)

References 46 publications

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“…These observations indicated the capability of the EDS in detecting N atom; and the failure in N detection in our SEM-EDS was more due to the complicated sample matrix as the matrix exerts significant effects on the detection of N by SEM-EDS (Gazulla et al, 2013). Hou et al (2017) examined protein (bovine serum albumin, BSA) fouling control during membrane distillation process. Their SEM-EDS spectrograms of the fouling scattered on membrane surface with BSA in the absence and presence of calcium ion showed the N peak clearly between the C and O peaks.…”

Section: Eds Analysis (Surface Composition)mentioning

confidence: 86%

Surface Characterization of Cottonseed Meal Products by SEM, SEM-EDS, XRD and XPS Analysis

He¹,

Cheng²,

Olanya³

et al. 2017

JMSR

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The utilization of cottonseed meal products as valuable industrial materials needs to be exploited. We have recently produced water-washed cottonseed meal, total cottonseed protein, sequentially extracted water-and alkali-soluble proteins, and two residues after the total and sequential protein extractions at a pilot scale. In this work, the surface characteristics of the six cottonseed meal products were examined by scanning electron microscopy (SEM), scanning electron microscopy-energy dispersive spectrometer (SEM-EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results showed that the surface properties of the six products differed from those of a commercial soy protein flour examined comparatively in this work. The compact morphology and relative-high N composition were observed in all three protein products, with greater similarity between the total protein and alkali-soluble protein. The surfaces of the two residue products were more porous with polysaccharide features. Washed cottonseed meal possessed the surface features similar to those of the residues. In the meantime, the N-associated functional groups were under-represented in the surfaces of all samples, compared to their bulk composition. Information derived from this work increased the understanding of the surface functional properties of cottonseed meal products, which would benefit their practical utilization.

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Section: Eds Analysis (Surface Composition)mentioning

confidence: 86%

Surface Characterization of Cottonseed Meal Products by SEM, SEM-EDS, XRD and XPS Analysis

He¹,

Cheng²,

Olanya³

et al. 2017

JMSR

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“…Currently, reverse osmosis (RO) is the dominating technology due to its intrinsic advantages including: high salt rejection, good efficiency, easy to be operated, and energy-saving (Abufayed et al 2003;Duong and Chung 2014;Sheikh et al 2003). After a lot of RO saline water desalination plants have been built, environmental problem caused by the disposal of high concentrated brine water from the RO process has drew much attention to the public (Hou et al 2017;Mitra et al 2009;Yang et al 2010;Yu et al 2012). In our opinion, pervaporation (PV) technology provides a practicable solution to treat the brine water.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of high-performance PVA/PAN composite pervaporation membranes crosslinked by PMDA for wastewater desalination

Zhang

Cao

et al. 2018

Pet. Sci.

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The pyromellitic dianhydride (PMDA) crosslinked poly(vinyl alcohol) (PVA) was coated on top of the PAN ultrafiltration membrane to form a PVA/PAN composite PV membranes for wastewater desalination. The composite membranes have high application value in industrial wastewater treatment. By varying the membrane fabrication parameters including the weight percent (wt%) of the PMDA, the crosslink temperature and duration, membrane with the best desalination performance was obtained. The composite membrane with a 2-lm-thick PVA selective layer containing 20 wt% of PMDA and being crosslinked at 100°C for 2 h showed the highest NaCl rejection of 99.98% with a water flux of 32.26 L/(m 2 h) at 70°C using the 35,000 ppm NaCl aqueous solution as feed. FTIR spectroscopy, wide-angle X-ray diffraction, thermogravimetric analysis and scanning electron microscope have been used to characterize the structures and properties of both the crosslinked PVA dense films and PVA/PAN composite membranes. The effects of the concentrations of PMDA, the crosslinking time and temperature to the membrane water contact angle, swelling degree, salt rejection and water flux were systematically studied.

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“…The N peak appeared at 0.39–0.40 KeV between the C and O peaks in the spectrogram of urea, but not in that of tryptophan (data not shown). While the N peak was observed in EDS analysis of industrial and environmental samples [30,31], the lack of N peaks has also been reported before, especially with biological samples [32,33]. This no-N-peak observation might be an indicator of a difference in the distribution of the N compound (i.e., protein, in these samples) between the surface and the bulk, as the electron beam of EDS with an accelerating voltage of 10 KV penetrates to a depth of about 200 nm [34], and the sample matrix may have significant effects on the detection of N by SEM-EDS [30].…”

Section: Resultsmentioning

confidence: 99%

Effects of Particle Size on the Morphology and Water- and Thermo-Resistance of Washed Cottonseed Meal-Based Wood Adhesives

Cheng

Klasson

et al. 2017

Polymers

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Water washing of cottonseed meal is more cost-efficient and environmentally friendly than protein isolation by means of alkaline extraction and acidic precipitation. Thus, water-washed cottonseed meal (WCSM) is more promising as biobased wood adhesives. In this work, we examined the effects of the particle size on the morphology and adhesive performance of WCSM. Pilot-scale produced and dried WCSM was treated by three grinding methods: (1) ground by a hammer mill and passed through a 0.5-mm screen, (2) further ground by a cyclone mill and passed through a 0.5-mm screen, or (3) further ground by a ball mill and passed through a 0.18-mm screen. Micro-morphological examination revealed two types of particles. The filament-like particles were mainly fibrous materials from residual linters. Chunk-like particles were more like aggregates or accumulations of small particles, with proteins as the major component. Further grinding of the 0.5-mm Hammer product with the Cyclone and Ball mill led to more fine (smaller) particles in the WCSM products. The impact of further grinding on the dry and soaked adhesive strengths was minimal. However, the decrease of the hot and wet strengths of WCSM products by the additional grinding was significant (p ≤ 0.05). Data presented in this work is useful in developing the industrial standards of WCSM products used in wood bonding.

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Control of protein (BSA) fouling by ultrasonic irradiation during membrane distillation process

Cited by 51 publications

References 46 publications

Surface Characterization of Cottonseed Meal Products by SEM, SEM-EDS, XRD and XPS Analysis

Surface Characterization of Cottonseed Meal Products by SEM, SEM-EDS, XRD and XPS Analysis

Fabrication of high-performance PVA/PAN composite pervaporation membranes crosslinked by PMDA for wastewater desalination

Effects of Particle Size on the Morphology and Water- and Thermo-Resistance of Washed Cottonseed Meal-Based Wood Adhesives

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