Desalination and Water Treatment
·
2024
·
IF 1
Xiaoqi Liu,Yanjun Yue
Phosphorus (P) recovery from wastewater, which contain large amounts of P by biochar can not only purify sewage, but promotes the reuse of P resources. The traditional enhancement of biochar's adsorption capacity through metal ion modification, such as with Ca 2+ , has shown promising results but is often hindered by high preparation costs. In this innovative work, we present a novel approach to prepare Ca-laden biochar (label as Ca-PSB) using egg-shells as a sustainable and low-cost calcium source. The biochar was prepared by peanut shell through anaerobic pyrolysis for 2 h at 400 °C under N 2 atmosphere. Three kinds of Ca-PSB were prepared according to the content of modifier (CaCl 2 ). The physiochemical properties of the Ca-PSBs were more conducive to adsorption of P. The economic cost of preparing was evaluated. The pore parameters were changed after the Ca modification. Especially, specific surface area of Ca-PSBs were increased by 4.82 %−12.05 % than raw biochar. The P adsorption capacity of Ca-PSB was 111.34 %−114.34 % higher than that of raw biochar. Ca-laden biochar showed excellent P adsorption, due to the Ca and CaO x on the Ca-PSB surface reacted with PO 4 3- through hydrogen bonds or through stable inorganic precipitation. This work provides an inexpensive strategy for preparing biochar with high efficiency for phosphorus adsorption.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 42
·35332-35339
·
IF 3.289
Dan Chen,Xuelian Xiao,Kai Yang
In this work, a novel adsorbent derived from waste eggshell (ES) was used for phosphate and hexavalent chromium adsorption. EDS, XRD, and FTIR analyses demonstrated that α-FeOOH was successfully loaded onto the eggshell, thus increasing the available sorption sites and facilitating the adsorption abilities of phosphate and hexavalent chromium. The maximum phosphate and hexavalent chromium adsorption capacities on α-FeOOH modified eggshell (F-ES) were 248.73 and 41.57 mg g−1, which were much greater than that of the original eggshell 89.74 and 11.81 mg g−1, indicating that the modification process significantly improved the phosphate and hexavalent chromium removal abilities. Besides, the kinetics data were both well fitted with pseudo-first-order, pseudo-second-order, and Richie kinetics models, which proved that the adsorption process onto the eggshell was controlled by multiple mechanisms. In addition, the removal rates of phosphate and hexavalent chromium increased with increasing adsorbent dosage. However, the removal rates showed downward trends with pH increased from 3 to 9 and ionic strength increased from 0 to 0.1 M.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2022
·Vol. 128
·期 4
·1-10
·
IF 2.983
Zhang Hongding,Wu Sifei,Xing Zhenhua,Gao Man,Sun Mengwei,Wang Jiaoyu,Wang Hai-Bo
Main conclusion Carbon dots (CDs) have attracted more and more attention due to their low toxicity, good biocompatibility and easy preparation. However, synthesis of CDs with high quantum yield using green and economic method is still challenging. Herein, an effective synthesis route was reported for green synthesizing CDs using waste chicken eggshell membrane as carbon source via microwave-assisted method. The obtained CDs showed good photo-stability with a high quantum yield of 19.5%. The as-prepared CDs was designed as a fluorescent probe for facile, rapid, sensitive determination of theophylline (TP) based on the fluorescence turn on–off strategy. The designed method exhibited good performance for the determination of TP. Under the optimal conditions, the fluorescent response of CDs was proportional to the TP concentrations in the range of 0.1–1 and 1–1000 μM with limit of detection of 28 nM. Moreover, the proposed method was applied to detect the TP content in tea samples. The as-prepared CDs provide a green and economic approach for the food safety test. Graphical abstract Eggshell membrane-derived carbon nanodots for direct and rapid detection of theophylline.
研究领域:
分析化学
·
食品安全检测
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Yixia Zhang,Yaqin Chen,Ze-Wen Kang,Xu Gao,Xian Zeng,Minghuan Liu,Da-Peng Yang
Dealing with water pollution is always a challenging task with the rapid development of society. The treatment of industrial wastewater usually requires the efficient and simple methods to reduce the harm to humans and the environment, and the complexity of the types of pollutants in the wastewater is a major challenge. Herein, eggshell membrane (ESM), a kind of agricultural waste with special hierarchical and porous structure, is considered as a promising bio-template for the successful fabrication of ESM-derived magnetic CuFe 2 O 4 nanocomposite (defined as ESM/CuFe 2 O 4 ). The nanocomposite exhibits unique morphological characters with 3D coral-like layered multi-channel architectures, which is completely different from that of pure CuFe 2 O 4 . Intriguingly, the magnetic ESM/CuFe 2 O 4 can be used as a multi-functional material with enhanced adsorption, catalysis, and antibacterial performances for water remediation. The adsorption behavior of the ESM/CuFe 2 O 4 to Congo red follows the pseudo-second-order kinetic model and the Freundlich adsorption isotherm with high correlation coefficients , and the maximum adsorption capability was determined to be 199.23 mg/g. The ESM/CuFe 2 O 4 nanocomposite also displays the good catalytic activity and high recycling stability towards the reduction of 4-nitrophenol, and the degradation rate was reach up to 98.9 % only within 5.5 min, which is superior to some reported materials. Furthermore, it is demonstrated that the magnetic ESM/CuFe 2 O 4 nanocomposite possesses strong antibacterial properties against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). In addition, some effect factors, which play an important role in enhancing the performances, are also discussed. This study provides a cost-effective approach for fabrication of advanced “green” nanomaterials with excellent performances by adding agricultural waste-eggshell membrane for water remediation.
研究领域:
环境科学
·
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xingsheng He,Da-Peng Yang,Xiaoyan Zhang,Minghuan Liu,Zewen Kang,Chenfei Lin,Nengqin Jia,Rafael Luque
In the present work, we synthesized CuO-ZnO (CZ) nanocomposites using a bio-templated method from biowaste-eggshell membranes (ESM). Results showed that CZ-ESM nanocomposites of morphology and structure preserved the original structural characteristics of ESM with interlaced network coated by small inorganic nanoparticles. In addition, the samples exhibit excellent adsorption, catalysis and antibacterial activities. Experimental results showed the adsorption kinetics and isotherm were well described by pseudo-second order kinetics and Langmuir isotherm model for Congo red dye, the maximum adsorption capacity was determined to be 775 mg•g −1 . The catalysis reduction efficiency of CZ-ESM nanocomposites for 4-nitrophenol (4-NP) reached 98% after 12 min at room temperature. CZ-ESM could be recycled several times without any significant activity loss. Furthermore, the results of antibacterial experiments indicated that CZ-ESM nanocomposites exhibited a strong inhibition activity against E. coli and S. aureus . The maximum diameter of the inhibition zone was 27.5 mm for S. aureus and 20.3 mm for E. coli .
研究领域:
环境科学
·
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2022
·
IF 8.91
Sufeng Wang,Xiaojuan Lv,Mingwei Fu,Zijing Wang,Dan Zhang,Qina Sun
Artemia egg shell loaded with nano-magnesium (shell-Mg) can be used to recover phosphorus from wastewater. The exhausted Artemia egg shell-Mg (denoted as shell-Mg-P) can be used as a slow-release fertilizer for phosphorus reuse. However, due to the coexistence of heavy metal ions in the environment, the application of slow-release fertilizer for phosphorus removal and reuse may have potential risks. In this paper, the potential risks of Pb 2+ , Cd 2+ , Zn 2+ and Cu 2+ in phosphorus wastewater and soil were studied from the formation and application process of shell-Mg-P. The result showed that shell-Mg adsorbed Pb 2+ , Cd 2+ , Zn 2+ and Cu 2+ in phosphate wastewater during the formation of shell-Mg-P and became shell-Mg-P-metal hybrid biomaterial . Although the experiment proved that the existence of heavy metal ions did not affect the phosphorus slow-release behavior of slow-release fertilizer, but the heavy metal ions in the shell-Mg-P-metal were also slow released. The pot experiment results confirmed that the slow-release phosphorus fertilizers (shell-Mg-P and shell-Mg-P-metal) in the soil polluted in low concentration of heavy metals can reduce the amount of heavy metals in whole wheat seedlings and promote wheat seedling growth. However, the application of slow-release fertilizers increased the translocation efficiency (T FR to SL ) of metal from root (R) to aboveground part (stem and leaves, SL), promoted the transportation of heavy metals from roots to the stems and leaves, and increased the safety risk of the wheat seedling edible. Therefore, besides the positive role of slow-release fertilizers in retaining heavy metals and reducing the amount of heavy metals in whole seedlings, the risk that it may aggravate the translocation of heavy metals to stems and leaves should be paid more attention, so as to ensure the safe and reliable application of slow-release fertilizers.
研究领域:
环境科学
·
农业科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 7
·期 15
·8832-8844
·
IF 9.931
Yunlong Guo,Da-Peng Yang,Minghuan Liu,Xiaoyan Zhang,Yisong Chen,Jiale Huang,Qingbiao Li,Rafael Luque
Catalytic oxidation plays a key role in transforming gaseous benzene into harmless matter, in which it is essential to look for a low-cost, environmentally friendly and efficient green catalyst/support. Herein, Ag nanoparticle (Ag NP) loaded-eggshell catalysts were successfully synthesized by a simple impregnation method, in which waste eggshells were used as an efficient template and catalyst support. SEM, XRD and ICP-OES results show that a different number of Ag NPs are uniformly distributed on the surface of eggshells, which are defined as Ag1/eggshell (10.8%), Ag2/eggshell (19.9%) and Ag3/eggshell (34.3%) catalysts according to the amounts of loaded Ag NPs. Then, the activity between the three catalysts and the pure Ag NPs was assessed based on the catalytic oxidation of benzene. Our results show that the Ag NP loaded-eggshell catalysts exhibit superior catalytic activity compared with the pure Ag NPs. Considering the balance between the cost and catalytic performance, the Ag2/eggshell catalyst was selected as the optimum research object in the subsequent work. The Ag2/eggshell catalyst calcined at 500 °C exhibited excellent catalytic activity, which is assigned to the unique channel structure of eggshell, good low-temperature reducibility, and high dispersion of particles (sizes effects) on the surface of eggshell as well as the synergetic interaction between the Ag NPs and eggshell. Furthermore, the Ag2/eggshell catalyst exhibited predominant stability even after 200 h of on-stream reaction. The reaction mechanism is put forward based on the in situ FTIR experimental results, in which some carboxylate intermediate species are confirmed. Accordingly, the waste eggshell is considered as a promising supporting material for the large-scale synthesis of noble metal catalyst with high catalytic performance and stability for VOC oxidation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 3
·e70167
·
IF 3.4
Chae-Yeon Woo,Gi-Hyeok Lee,Kyung-Jik Lim,Jun-Won Kang
The use of blue light within a range of 400–470 nm holds significant potential for sanitization purposes. However, due to an extended exposure duration needed for an antibacterial effect, the utilization of a photosensitizer (PS) to increase the efficacy of the treatment becomes essential. This study investigated prospective use of onion peel extract as a PS in combination with 405 nm blue light for the inactivation of Salmonella Typhimurium, a common foodborne pathogen on eggs. Extracts were obtained using 99% ethanol, 50% ethanol, and distilled water (DW). Their photosensitizing activities were then compared. The combination of 405 nm blue light and onion peel extract using 99% ethanol reduced bacterial populations more effectively than blue light treatment alone, while also increasing reactive oxygen species generation, cell membrane permeability, lipid peroxidation, and DNA damage levels. However, the antimicrobial effect of the 99% ethanol extract did not show a concentration dependence. Spraying DW extract on eggshell treated with 99% ethanol onion peel extract at 1 mg/mL and blue light further enhanced Salmonella reduction. Liquid chromatography was conducted for component separation. However, none of the separated fractions exhibited a significant antibacterial effect, suggesting that the active compounds responsible for antibacterial activity might work synergistically in the crude extract rather than individually. In contrast, the crude extract exhibited a significant antibacterial effect, suggesting that 99% ethanol-extracted onion peel can serve as a PS, particularly in its crude state without purification, and effectively inactivate Salmonella on eggshells. Practical Application Antimicrobial blue light (aBL) in the range of 400–470 nm is a promising nonthermal technology with several advantages, including minimal impact on food quality and safety. This study optimized the concentration of onion peel extract to improve its effectiveness as a photosensitizer in aBL treatment against Salmonella Typhimurium on eggshells. These results may serve as a reference for further optimizing aBL treatments, offering a potentially sustainable and cost-effective photosensitizer for pathogen control.
研究领域:
食品安全
·
微生物学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Crystals
·
2017
·Vol. 7
·期 2
·45
·
IF 1.566
Yaling Li,Yong Ye,Yunde Fan,Ji Zhou,Li Jia,Bin Tang,Xungai Wang
We reported the fabrication of an in situ surface-enhanced Raman scattering (SERS) monitoring platform, comprised of a porous eggshell membrane (ESM) bioscaffold loaded with Ag nanoprism via an electrostatic self-assembly approach. The localized surface plasmon resonance (LSPR) property of silver nanoprism leads to the blue color of the treated ESMs. UV-vis diffuse reflectance spectroscopy, scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) measurements were employed to observe the microstructure and surface property of Ag nanoprisms on the ESMs. The silver nanoprism-loaded eggshell membrane (AgNP@ESM) exhibited strong catalytic activity for the reduction of 4-nitrophenol by sodium borohydride (NaBH4) and it can be easily recovered and reused for more than six cycles. Significantly, the composites also display excellent SERS efficiency, allowing the in situ SERS monitoring of molecular transformation in heterogeneous catalysis. The results indicate that the AgNP@ESM biocomposite can achieve both SERS and catalytic functionalities simultaneously in a single entity with high performance, which promotes the potential applications of ESM modified with functional materials.Keywords:eggshell membrane;silver nanoprism;catalysis;SERS
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Jing Li,Lu Cao,Bing Li,Haiming Huang,Wei Yu,Cairui Sun,Kehua Long,Brent Young
The activated sludge-based biochar modified by metals performs well for the phosphate adsorbent. The cost of the modification materials and the follow-up treatment of the spent adsorbents are significant limits for the large-scale application of the developed adsorbent. In this study, wasted egg shells and oyster shells, rich in calcium (Ca), were employed to load Ca onto the surface of the activated sludge-based biochar. The results revealed that different forms of Ca on egg shell-modified activated sludge biochar (ESB) and oyster shell modified activated sludge biochar (OSB) induced different adsorption performances. ESB had a greater phosphate adsorption capacity than OSB, where the maximum adsorption capacities were 154.18 mg/g and 129.03 mg/g, respectively. The saturated biochar could slowly release phosphate at different levels of pH; in fact, the phosphate release efficiency of ESB exceeded that of OSB. Economic analysis suggested that the cost of phosphate removal by ESB was $1.13 per kg, and by OSB was $1.22 per kg. The phosphate adsorption using the Ca-loaded biochar revealed good prospects for sustainable development with the advantages of the high efficiency of phosphate removal, low cost and resourceful employment of wastes.
研究领域:
环境科学
·
废水处理
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2017
·
IF 3.671
Chenyu Jiang,Chuanchuan Cheng,Mei Hao,Hongbin Wang,Ziying Wang,Cai Shen,Ling-Zhi Cheong
Eggshell membrane (ESM) is an industrial waste that is available in abundance from food industry. Present study investigated the physicochemical properties of oxidized ESM and compared the efficiency of ESM and oxidized ESM as carrier for Burkholderia cepacia lipase (BCL) used in esters hydrolysis and transesterification . Following oxidation treatment, FTIR analysis and Ellman’s assay showed amino acid cysteine in ESM was oxidized to form disulfide bond-containing cystine . In addition, AFM analysis showed ESM which exhibited a highly porous filamentous structure appeared to be coalesce following oxidation treatment. Oxidized ESM also showed reduced porosity (38.67%) in comparison to native ESM (51.65%). BCL were successfully immobilized on oxidized ESM through carrier activation method (enzyme loading of 5.01 mg protein/g oxidized ESM). These immobilized lipase demonstrated significantly (P < 0.05) enhanced catalytic stability with close to 100% of initial hydrolysis (12.03 ± 0.29 mmol/min/g) activity; and more than 85% of its initial transesterification (7.83 ± 0.05) activity for at least 10 consecutive runs. Enhanced catalytic stability of BCL immobilized on oxidized ESM might be due to stabilization of the protein structure in oxidized ESM by disulfide bonds which helped formation of a stable bonding with BCL.
研究领域:
生物化学
·
酶工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale Research Letters
·
2016
·Vol. 11
·期 1
·1-9
·
IF 2.584
Liu Xiaojing,Liang Miao,Liu Mingyue,Su Rongxin,Wang Mengfan,Qi Wei,He Zhimin
In this study, a facile one-step synthesis of a novel nanocomposite catalytic film was developed based on silver nanoparticles (AgNPs) immobilized in tannic acid-modified eggshell membrane (Tan-ESM). Tannic acid, as a typical plant polyphenol from oak wood, was first grafted onto ESM fibers to serve as both the reductant and the stabilizer during the synthesis of AgNPs. The morphology, constitution, and thermal stability of the resulting AgNPs@Tan-ESM composites were fully characterized to explain the excellent catalytic efficiency of AgNPs@Tan-ESM composites. These composite catalysts were applied to the degradation of azo dyes which exhibited the high catalytic activity toward Congo red and methyl orange according to the kinetic curves. More importantly, they can be easily recovered and reused for many times because of their good stability.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）