Removal of difenoconazole and nitenpyram by composite calcium alginate beads during apple juice clarification

Zhou, Qizhen; Wang, Wenzhuo; Liu, Fengmao; Chen, Rui

doi:10.1016/j.chemosphere.2021.131813

Cited by 20 publications

(5 citation statements)

References 47 publications

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“…[31][32][33] In addition, the low-frequency absorption bands of 1441 cm À1 correspond to the characteristic peak of C N, indicating that PDA has been included in the composite system and the related Schiff base reaction or self-polymerization has occurred. 34,35 The strong bands at 1069 cm À1 and 548 cm À1 are attributed to the stretching and bending vibrations of Si O, indicating that DE has also been incorporated in, and the absorption peak at 1002 cm À1 is attributed to the C O C of the alginate polysaccharide unit. 36 The above-mentioned FT-IR analysis shows that DE, PDA, SA, and PEI have been successfully introduced into the novel polymer composite.…”

Section: Adsorption Isotherms Of De@pda-pei@sa For Copper Ionsmentioning

confidence: 99%

Construction of a novel double network polymer composite and evaluation of its highly efficient adsorption properties for copper ions

Song

Yin

et al. 2022

J of Applied Polymer Sci

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To explore more efficient heavy metal copper ions adsorbents with double network polymers, this work has presented the novel fabrication processes of the polymer composite diatomaceous earth/polydopamine‐polyethyleneimine/alginate DE@PDA‐PEI@SA, which was characterized by FT‐IR, SEM, EDS, XPS, and was efficiently utilized for copper ions adsorption. The relevant adsorption behaviors of DE@PDA‐PEI@SA for copper ions such as the effect of pH, the effect of adsorbent dosage, adsorption kinetics, adsorption isotherm etc. have been investigated. The results reveal that the adsorption kinetics of DE@PDA‐PEI@SA for copper ions at different temperatures can be modeled by the pseudo second‐order rate equation, the experimental data fit well with the Langmuir isotherm model, indicating a homogeneous monolayer adsorption, and the maximum adsorption capacity of DE@PDA‐PEI@SA for copper ions could reach 454.55 mg/g at 35°C that is very high compared to other reported adsorbent materials. The research results indicate that DE@PDA‐PEI@SA is a novel efficient adsorbent with high efficiency in wastewater treatment and water purification, which could provide a facile processing for copper adsorption.

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Section: Adsorption Isotherms Of De@pda-pei@sa For Copper Ionsmentioning

confidence: 99%

Construction of a novel double network polymer composite and evaluation of its highly efficient adsorption properties for copper ions

Song

Yin

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

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“…Likewise, Mautner et al (2017) demonstrated that the cationic cellulose nanopaper membranes are efficiently useful for the continuous removal of nitrates, released from the chemical fertilizer in the agriculture soil and irrigation water [108]. Similarly, several researches revealed that the nanocellulose can serve as a potential adsorbent for the removal of pesticides, such as chlorpyrifos [143], tetraconazole [144], diuron [145], organophosphorus [146], difenoconazole, and nitenpyram [147]. Nanocelluloses are also employed for the adsorption and elimination of hazardous drugs from industrial wastewater, such as ciprofloxacin, diclofenac [124], metronidazole [148], and ceftriaxone [149].…”

Section: Adsorbents For Hazardous Organic Pollutants Removalmentioning

confidence: 99%

Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration

et al. 2021

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Nanocelluloses are promising bio-nano-materials for use as water treatment materials in environmental protection and remediation. Over the past decades, they have been integrated via novel nanoengineering approaches for water treatment processes. This review aims at giving an overview of nanocellulose requirements concerning emerging nanotechnologies of waster treatments and purification, i.e., adsorption, absorption, flocculation, photocatalytic degradation, disinfection, antifouling, ultrafiltration, nanofiltration, and reverse osmosis. Firstly, the nanocellulose synthesis methods (mechanical, physical, chemical, and biological), unique properties (sizes, geometries, and surface chemistry) were presented and their use for capturing and removal of wastewater pollutants was explained. Secondly, different chemical modification approaches surface functionalization (with functional groups, polymers, and nanoparticles) for enhancing the surface chemistry of the nanocellulose for enabling the effective removal of specific pollutants (suspended particles, microorganisms, hazardous metals ions, organic dyes, drugs, pesticides fertilizers, and oils) were highlighted. Thirdly, new fabrication approaches (solution casting, thermal treatment, electrospinning, 3D printing) that integrated nanocelluloses (spherical nanoparticles, nanowhiskers, nanofibers) to produce water treatment materials (individual composite nanoparticles, hydrogels, aerogels, sponges, membranes, and nanopapers) were covered. Finally, the major challenges and future perspectives concerning the applications of nanocellulose based materials in water treatment and purification were highlighted.

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“…These Ca-Alg characteristics promote healing of chronic wounds, thus enabling the widespread use of Ca-Alg in wound dressings [ 13 ]. Ca-Alg beads, well-known for their special adsorption ability, are used in producing dyes [ 14 ], fungicides like difenoconazole, and insecticides such as nitenpyram [ 15 ]. As a biodegradable biomaterial or composite adsorbent, Ca-Alg demonstrates excellent removal/recovery performance for toxic metals (Cu 2+ and Ni 2+ ions) [ 16 ], valuable trace metals, rare earth ions (e.g., Li, Sr, and La) [ 17 ], U (VI) ions [ 18 ], and ammonia nitrogen and phosphate [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Calcium Alginate Production through Forward Osmosis with Reverse Solute Diffusion and Mechanism Analysis

et al. 2023

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Calcium alginate (Ca-Alg) is a novel target product for recovering alginate from aerobic granular sludge. A novel Ca-Alg production method was proposed herein where Ca-Alg was formed in a sodium alginate (SA) feed solution (FS) and concentrated via forward osmosis (FO) with Ca2+ reverse osmosis using a draw solution of CaCl2. An abnormal reverse solute diffusion was observed, with the average reverse solute flux (RSF) decreasing with increasing CaCl2 concentrations, while the average RSF increased with increasing alginate concentrations. The RSF of Ca2+ in FS decreased continuously as the FO progressed, using 1.0 g/L SA as the FS, while it increased initially and later decreased using 2.0 and 3.0 g/L SA as the FS. These results were attributed to the Ca-Alg recovery production (CARP) formed on the FO membrane surface on the feed side, and the percentage of Ca2+ in CARP to total Ca2+ reverse osmosis reached 36.28%. Scanning electron microscopy and energy dispersive spectroscopy also verified CARP existence and its Ca2+ content. The thin film composite FO membrane with a supporting polysulfone electrospinning nanofiber membrane layer showed high water flux and RSF of Ca2+, which was proposed as a novel FO membrane for Ca-Alg production via the FO process with Ca2+ reverse diffusion. Four mechanisms including molecular sieve role, electrification of colloids, osmotic pressure of ions in CARP, and FO membrane structure were proposed to control the Ca-Alg production. Thus, the results provide further insights into Ca-Alg production via FO along with Ca2+ reverse osmosis.

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Removal of difenoconazole and nitenpyram by composite calcium alginate beads during apple juice clarification

Cited by 20 publications

References 47 publications

Construction of a novel double network polymer composite and evaluation of its highly efficient adsorption properties for copper ions

Construction of a novel double network polymer composite and evaluation of its highly efficient adsorption properties for copper ions

Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration

Calcium Alginate Production through Forward Osmosis with Reverse Solute Diffusion and Mechanism Analysis

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