Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Guokai Zhu,Jieni Wang,Xinyu Zhao,Shuqin Zhang,Chenlin Wei,Chenxiao Liu,Leichang Cao,Shuguang Zhao,Jinglai Zhang,Shicheng Zhang
This study explored the utilization of waste oxytetracycline fermentation residue (OFR), abundant in nitrogen and organic matter, to prepare in-situ nitrogen-doped porous biochar (activated OFR derived biochar, AOBC) through a coupled pyrolysis process, and investigated the removal of tetracycline antibiotics (TCs) from water with the prepared AOBCs. The physicochemical characterization results showed the characterizations of abundant nitrogen functional groups, high specific surface area (1960.38 m 2 /g), and the high microporosity (61.6 %) for AOBCs. At 25 ℃, the maximum adsorption capacity calculated by Langmuir model of AOBC-3–600 for tetracycline hydrochloride (TC), chlortetracycline hydrochloride (CTC), oxytetracycline hydrochloride (OTC), and doxycycline hydrochloride (DOC) reached 473.00, 293.28, 220.61, and 282.72 mg/g, respectively. The superior fit of the pseudo-second-order and Langmuir models indicated that the adsorption mechanism involved both the physical effect (pore filling) and chemical interactions (electrostatic attraction, hydrogen bonding, π-π interaction, and Lewis acid-base interaction). Environmental risk assessments substantiated the absence of residual oxytetracycline and antibiotic resistance genes in the prepared biochar, indicating its application safety. This research provides a sustainable route to simultaneously treat the antibiotic contamination in water and rationally utilize antibiotic fermentation residues.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Foods
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2025
·Vol. 14
·期 6
·1058
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IF 5.1
Xingran Kou,Kangning Ma,Xin Huang,Hui Wang,Qinfei Ke
In the process of ginger deep processing, a lot of waste is generated which is rich in biopolymers and active ingredients such as cellulose, starch, gingerol, and gingerol, but its low utilization rate leads to waste of resources. In this study, ginger waste residue, cellulose, and bioactive substances were spun into fiber materials by wet electrospinning technology with 1-butyl-3-methylimidazole acetate ([Bmim]Ac) as solvent. Fiber plasticization and [Bmim]Ac removal were achieved by dynamic deionized water coagulation bath. Scanning electron microscopy (SEM) and tensile strength analysis showed that the obtained GC-1 and GC-2 films have a non-uniform diameter, with a clear fiber structure and strong tensile strength. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) confirmed that cellulose transforms from type I to type II crystal structure, and [Bmim]Ac is effectively removed. The inhibition rate of 6-Shogaol-impregnated GC film againstEscherichia coliandStaphylococcus aureuswas 99%. The experiment of strawberry preservation verified the potential of GC film in food preservation. In this study, the high-value utilization of ginger waste in food packaging was realized by preparing antibacterial electrospun fiber films.
研究领域:
食品科学
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材料科学
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环境科学
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Shuangmei Liu,Hongling Zhou,Wenyan Zhang,Li Liu,Hangjun Yan,Yang Liao,Hui Mao
Distiller's grains (DGs) are the solid wastes generated during the manufacture process of Chinese liquor. It is crucial for the liquor industry to realize the resource utilization of DGs for accomplishing a sustainable development. Herein, a novel iron catalyst was fabricated by anchoring porous zero-valent iron (Fe 0 ) with high accessibility onto the DGs biochar (DB). The as-prepared DGs biochar-anchored porous iron (DB@Fe) demonstrated exceptional capability for the remediation of tetracycline (TC) contamination in water, which provided the removal rate of TC as high as 92.15 %, showing 1.43-fold higher TC degradation capability than the pristine Fe 0 owing to the porous Fe 0 enabled facile accessibility to TC. Moreover, the abundant oxygen-containing functional groups of DB were able to effectively suppress the leakage of anchored porous Fe 0 from the DB@Fe, which therefore provided a low iron loss rate of only 3.26 % during the degradation process. The DB@Fe also demonstrated its cycling capability by providing the TC removal rate of 65.45 % in the 5th cycle. The DB@Fe still achieved the TC removal rate of 72.81 % in the presence of NaCl at the high concentration of 50 g L −1 , which demonstrated the potential utilization of DB@Fe for the remediation of TC contamination in mariculture wastewater. High-performance liquid chromatography analyses revealed that the DB@Fe enabled a synergistic remediation of adsorption-degradation process for TC contamination in water.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Catalysts
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2015
·Vol. 5
·期 4
·1636-1648
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IF 2
Rui Wang,Xiaolin Xie,Yanxiu Liu,Zhigang Liu,Guofang Xie,Ning Ji,Lizhi Ma,Mingquan Tang
The kiwifruit industry is booming worldwide. As a result, a great deal of kiwifruit waste residue (KWR) containing monosaccharides is produced and discarded. This material shows great potential for the production of platform chemicals. In this study, a series of Nb/Al oxide catalysts were synthesized via a facile and low-cost coprecipitation method, and their structures were characterized using: thermal gravimetric analysis (TGA), XRD, FESEM, TEM, X-ray photoelectron spectroscopy (XPS), NH3-TPD, N2adsorption-desorption, and FTIR-Pyridine adsorption. Experimental results of sugar-to-levulinic acid (LA) conversion revealed that the 20%Nb/Al oxide catalyst provided the highest catalytic performance and durability in terms of LA yield from fructose (74.2%) at 463 K after 10 min and from glucose (47.5%) at 473 K after 15 min. Notably, the 20% Nb/Al oxide catalyst with a 10% dosage is capable of converting kiwifruit waste residue to LA at 473 K after 10 min. In conclusion, the enhanced catalytic performance was obtained due to the high acidity, and large surface areaof Nb/Al oxide catalyst.Keywords:levulinic acid;kiwifruit waste residue (KWR);heterogeneous catalysis;Nb/Al oxide catalyst
研究领域:
化学工程
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Wenju Tao,Jiaxin Yang,Liyu Chen,Yifan Zhang,Shaohua Wu,Jiaming Li,Zhaoshun Liu,Jingui He,Zhaowen Wang
Green and efficient recovery of solid waste from aluminum electrolysis is of great significance. In this study, the sediment generated by aluminum electrolysis at the bottom of the waste tank was used as an alternative F resource. A new process of low-temperature acidification roasting with Al 2 O 3 as the catalyst was performed to effectively recover F. The results of the single-factor experiment showed that a long reaction time and high acid-material ratio were conducive to improving the extraction rate of F. Under the conditions of 275 °C and 5 doses of sulfuric acid, the optimum F extraction rate was realized by roasting for 4 h with 1 dose of Al 2 O 3 as the catalyst. The results of the XRD, SEM and chemical analyses showed that NaAl(SO 4 ) 2 was the main component produced in the calcination reaction using Al 2 O 3 as the catalyst, rather than NaHSO 4 (produced in the calcination process without a catalyst). This ensured complete combination of H and F, which greatly improved the extraction rate of F (from 80.76 to 99.76%). The proposed mechanism can provide not only an optimization scheme for the roasting of waste sediment at the furnace bottom, but also a more effective recovery treatment for the acidification roasting of other solid wastes with low Al 2 O 3 content.
研究领域:
环境科学
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冶金工程
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DOI
高影响因子
RESOURCES CONSERVATION AND RECYCLING
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2022
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IF 13.716
Longgong Xia,Shuheng Cao,Qihou Li,Xingwu Lu,Zhihong Liu
Copper smelting slag and gypsum residue are by-products in copper making processes, and both contain valuable elements, such as copper, sulfur, etc. However, there is more than 0.25 wt% Cu in the smelting slag, which cannot be recovered with present technologies. A sulfidation process, which used the gypsum residue as the sulfur resource, was proposed and studied in treating copper smelting slag. Obtained results showed: 1) CaSO 4 transformed to CaS under reductive decomposing conditions, and reactions between CaS and slag components occurred spontaneously during the slag cooling process; 2) the Fe/SiO 2 mass ratio of the slag, the CaS excess coefficient (α), and the cooling rate (v) had an influence on the terminal phase composition, sulfide particle size, etc.; 3) under optimized conditions (Fe/SiO 2 =1.0: α=5, v = 1.00°C/min; Fe/SiO 2 =1.3: α=4, v = 0.25°C/min; Fe/SiO 2 =1.8: α=5, v = 0.25°C/min), the Cu contents in non-sulfide phases were lower than 0.08 wt%, and the mean particle size of sulfides were 37- 40 μm, which were feasible for flotation recoveries. TCLP (Toxicity Characteristic Leaching Procedure) tests indicated that the co-treatment process improved the stability of these starting materials. Based on samples characterization and thermodynamic analysis, a corresponding reaction mechanism was proposed.
研究领域:
冶金工程
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环境科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Qiang Liu,Yitao Yu,Guanglai Zhu,Haiming Liu,Chuanxing Jiang,Wei Zhang,Yuanyue Li,Qiang Xue,Yong Wan,Bing Li,Xian Zhang,Caifeng Dai,Zhenhua Wang
The hybrid super absorbent resin (SAR), Poly(acrylicacid-co-acrylamide-co-2-acrylamido-2-methyl-1-propane sulfonic acid) based on zeolite synthesized from solid waste slag (P(AA-co-AM-co-AMPS)/zeolite) was synthesized. The chemical and structural characteristics of the materials were examined through FTIR, XRD , and SEM studies. In the presence of zeolite, the flat surface of the composite transformed into interconnected porous structure . The deionized water equilibrium swelling capacity of the hybridized SAR (835.79 g/g) was higher than that of the pure SAR (524.53 g/g). As much as 40 % of the water was released from the fully swollen hybrid SAR when it was centrifuged. P(AA-co-AM-co-AMPS)/zeolite had a swelling loss rate just of 27.64 % after five swelling/drying cycles. In addition, it still had good absorption in ionic salt solutions of different concentrations and good water retention at different temperatures. This confirmed that the hybridized SAR had excellent water holding capacity and salt solution adsorption. The FTIR and XRD results showed that the excellent performance of the hybridized SAR may originate from the interconnection of the zeolite and the pure SAR. The P(AA-co-AM-co-AMPS)/zeolite may be utilized as an agricultural water retaining agent.
研究领域:
材料科学
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环境科学
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农业科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2021
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IF 5.909
Junwei Ding,Xin Li,Yuling Shan,Shitao Yu,Wenlong Yu,Yibin Liu,Wenting Zhao,Xiaoke Li,Mengxiao Liu,Yuqi Ding
Both nitrophenol wastewater and aromatic amine industrial waste residue are serious threats to our environment. In this paper, N-rich porous carbons (NPC) derived from industrial aromatic amine waste residue were prepared via a facile “carbonization-activation” one-step approach. Owing to the extremely high activation efficiency of amine residue-NaOH matching strategy, NPC prepared with 1.5 of NaOH-residue ratio obtained an ultra-high specific surface area of 3120 m 2 /g with a huge pore volume of 2.381 cm 3 /g. XPS analysis shows that graphitic-N and pyridinic-N are the main N-doped species. The plentiful pore structure, ultra-high surface area, and modification of nitrogen-doped sites rendered the NPCs remarkable adsorption capacity (1030.51 mg/g) for p-nitrophenol (PNP). Adsorption isotherms and adsorption kinetics indicated the adsorption behavior of PNP molecules on NPCs surface adhered to the mechanism of monolayer adsorption and pseudo-second-order kinetic. DFT calculation studies revealed that N-doped species could effectively enhance the adsorption energy of PNP on carbon surface due to the enhanced dispersion and electrostatic attraction. Particularly, the pyridinic-N made an outstanding contribution to improve the interactions through hydrogen bonding. Furthermore, the NPC-1.5 showed an excellent adsorption stability for PNP in the reusability test of 12 cycles, reflecting its great potential in practical application.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Ruiyan Xie,Jiangqin Li,Kaili Yao,Lan Shi,Xiulan Guo,Min Zhang,Haibin Wang,Tianding Hu,Shuai Jin,Shaoyun Shan
Calcium looping, a carbon dioxide (CO 2 ) capture technique, may provide an effective route to eliminate climate change brought by the steadily rising anthropogenic CO 2 emissions. However, the key challenge for calcium looping is the sintering-induced decay over the numerous cycles for CaO-based sorbents. Herein, multi-promoters modified CaO-based sorbents, derived from the mixed waste slag of marble waste powder (MWP) and rare earth polishing powder wet slag (REPP), are prepared by a simultaneous hydrating and calcining process. The cyclic CO 2 capture is explored by a thermogravimetric analyzer, and the promotion mechanism is investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, CO 2 temperature-programmed desorption, and reaction kinetics fitting. Results indicate that the multicomponent promoters from the REPP, including CeO 2 , Ca 12 Al 14 O 33, and LaPO 4 , enhance the carbonation cyclic activity of CaO from MWP. The best-performing MWP-REPP sorbent with 15 wt% REPP shows less than a 10 % drop decay and the CO 2 carbonation conversion remains at 75 % (0.46 g CO 2 /g sorbent) after 50 repeated cycles. The excellent cyclic capture performance is attributed to the synergistic interaction between the promoters and CaO, where the CeO 2 promoter owns abundant oxygen vacancies, and the Ca 12 Al 14 O 33 and LaPO 4 promoters provide the blocked effect, thus facilitating the CO 2 sorption and inhibiting the CaO from sintering. This work presents useful guidance for improving the cyclic sorption stability of CO 2 from waste slags.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2021
·
IF 9.642
Qiuju Wang,Zhao Zhang,Guoren Xu,Guibai Li
Magnetic porous biochars (MC HCl , MC HAc ) with nanostructure on surfaces were prepared from penicillin fermentation dregs by pyrolysis with K 2 FeO 4 activation and used in penicillin adsorption. MC HCl and MC HAc had high BET surface areas of 672 and 735 m 2 /g, respectively; mainly be attributed to the activation of K 2 FeO 4 as well as acid pickling. Saturation magnetizations of MC HCl and MC HAc were 75.29 and 42.45 emu/g, respectively; the magnetism was mainly derived from the Fe 3 O 4 and Fe 3 C in magnetic biochars. MC HCl had nano sticks of ~ 80 nm and MC HAc had petal-like slice of ~ 30 nm on surfaces. The maximum adsorption capacities of penicillin on MC HCl and MC HAc were 196 and 322 mg/g at 308 K, respectively. The adsorptions of penicillin on MC HCl and MC HAc were consistent with pseudo primary kinetics and the Langmuir adsorption isotherm model, and thermodynamic analysis indicated that the adsorption mechanism included physical and chemical adsorption.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Waste and Biomass Valorization
·
2024
·
IF 2.6
Wang Jiahe,Lu Jinshan,Wang Hongzhi
The reutilization of marble sludge from the marble cutting and polishing process offers economic and environmental benefits. In this work, fly ash is used as an aluminosilicate source to prepare geopolymers with marble sludge. The crystal composition, gel structure, pore distribution, microstructure and Na + ion leaching behavior were investigated to determine the effects of multiscale fillers on the apparent density, compressive strength, and efflorescence performance of the geopolymers. The addition of graphene oxide (GO) filler catalytically promotes geopolymerization reactions, inhibits microcrack formation and increases the compressive strength, albeit with pronounced efflorescence. In contrast, the hydrophobic SiO 2 aerogel (SA) filler effectively eliminates the pores and hinders water permeability and Na + leaching, thus greatly improving the anti-efflorescence properties. The concentration of Na + ions in the leach solution follows an exponential relationship with leach time, indicating diffusion controlled leaching behavior. With the combination of 1‰ GO and 1% SA, the geopolymer achieves a compressive strength of 40.6 MPa and a surface contact angle of 99.1°. After the immersion efflorescence test, the geopolymer shows a mass loss of 4.3% and a strength loss of 7.2%, far superior to those of the unfilled geopolymer. The strengthening and improved anti-efflorescence properties are closely related to the densification and increased hydrophobicity of the geopolymers. The synergistic effect of different fillers provides a simple technical route to produce high strength and anti-efflorescence geopolymers with marble sludge, promising suitability for applications in paving and embankment blocks. Graphical Abstract
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2023
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IF 11.1
Tong Wen,Yunliang Zhao,Licai Chen,Yanhui Miao,Zixuan Zhang,Shaoxian Song,Tingting Zhang
The model of efficient, clean, and cheap collaborative governance has received considerable attention in the treatment of pollution such as wastewater and solid waste. The “waste control by waste” strategy is proposed and put into practice in this work, that is, the ferrosilicon from waste carbide slag is utilized for treating dyes wastewater via the advanced oxidation process (AOP) of ferrosilicon/PMS/light. The main component of ferrosilicon is FeSi and Fe 5 Si 3 , which are riched in Fe element and suitable for inducing the AOP reaction. When the ferrosilicon is used in the AOP system, 20 mg L −1 MB can be completely decolorized within 45 min. The excellent performance of the ferrosilicon/PMS/light system is also observed in various wastewater conditions such as solution pH (3–9) and dye types (MB, MO, MG , and CR), which is superior to common PMS/light and other reported system. In addition, the ferrosilicon catalyst can keep the MB removal at nearly 100% in five cycles, and the proportion of its leached iron is always less than 1%, which effectively solves the performance degradation and leaching loss of commonly used zero-valent iron (ZVI) catalyst. In the ferrosilicon/PMS/light system, the SO 4 ● ˉ and 1 O 2 radicals act as the main active species and their production is due to the redox of iron elements and the self-decomposition of PMS , respectively. Overall, this research progress provides a valuable reference for clean and cheap environmental governance.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）