INDUSTRIAL CROPS AND PRODUCTS
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2024
·
IF 5.6
Mujeeb Alam,Danping Jiang,Huan Zhang,Lei Zhang,Faiqa Nadeem,Nadeem Tahir,Chaoyang Lu,Quanguo Zhang
Photo-fermentation offers a promising roadmap for hydrogen production through their ability to harness light energy, however, its lower conversion efficiency is the major bottleneck for its realization. This study investigates the catalytic role of wideband gap nano-photocatalysts (SiC, ZnO, and SnO 2 ) in enhancing hydrogen generation from Arundo donax L. Physio-optical characteristics of SiC, ZnO, and SnO 2 nano-photocatalysts were assessed through SEM, XRD, and FT-IR which confirmed that incorporated nano-photocatalysts are spherical with uniform size distribution and there is no secondary phase. Hydrogen production experiments with varying nano-photocatalyst concentrations revealed that the maximum hydrogen yield of 104 and 98.83 mL/g was achieved with SiC and ZnO, respectively, at loading concentration of 200 mg/L, whereas 69.30 mL/g were observed with 100 mg/L of SnO 2 . The incorporation of SIC, ZnO, and SnO 2 nano-photocatalyst permitted to increase the hydrogen content in overall gas production by 41 %, 37.34 %, and 18.26 % as compared to the control group. The increase in hydrogen production is related to the enhanced e-h pair separation lifetime of SiC, confirmed from PL spectroscopy. Addition of SiC caused a longer availability of electrons that helped to increase the metabolic rate by 38 % and 40.29 % in energy conversion efficiency (ECE). ANOVA results revealed significant differences between the control and maximum values of CHP, HC%, byproducts, and ECE. Tukey pairwise comparisons showed that SiC and ZnO had non-significant differences at 200 mg/L but both significantly outperformed SnO 2 at 100 mg/L. Thus, the selection of suitable catalysts photocatalysts with enhanced e-h pair separation lifetime may offer promising prospects for sustainable energy technologies by enhancing biohydrogen production.
研究领域:
生物技术
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可再生能源
·
光发酵
✓ 已验证
产品关联
DOI
高影响因子
Applications in Energy and Combustion Science
·
2025
·
IF 6
Mujeeb Alam,Zheng Wang,Zhiping Zhang,Hina Ramzan,Jiang Danping,Faiqa Nadeem,Siming You,Quanguo Zhang
This study examines photo-fermentative biohydrogen production (PFHP) from Arundo donax L. using binary (SiC/ZnO) and ternary (SiC/ZnO/SnO 2 ) co-catalyst systems. The maximum cumulative hydrogen production of 110 mL/g and hydrogen production rate of 39.74 mL/g·h⁻¹ at 24h was achieved in ternary-C2 group of ternary system which was 73.23% higher as compared to the CG (63.5 mL/g), also outperforms binary system (97.58 mL/g, 35.81mL/g·h⁻¹) by 12.73% and 10.97%. The binary system achieved a 48.67% hydrogen content percentage, while the ternary system had 52.53%, which is 14% and 18.3% higher than the control group. Multi-interface heterojunctions occur synergistically, which is the source of the increased activity. In addition to accelerating electron migration and inhibiting electron–hole recombination, this arrangement facilitates effective interfacial charge transfer. Together, these effects produce a favourable redox environment that improves bacterial metabolism and sustains a process of hydrogen production. Maximum light absorption and charge-separation efficiency may explain the ternary system's faster metabolism and microbial activity. Ternary system hydrogen production enhanced the charge transfer by reducing the oxidation-reduction potential (-408 mv) and lag phase reduced to 8.48h from 14.71h in binary system, a 53.73% performance boost. Maximum Energy Conversion Efficiency of 8.1% was achieved in experimental group ternary-C2 of ternary system which is 12% and 52.83% better than binary system (7.2%) and control (5.3%). The ternary system provides a better hydrogen production metabolite route and reduces VFA’s accumulation.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
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IF 5.162
Wissam Bessa,Djalal Trache,Mehdi Derradji,Houda Ambar,Ahmed Fouzi Tarchoun,Mokhtar Benziane,Bendiba Guedouar
In the present work, giant reed cellulosic fibers ( Arundo donax L., RF) were explored as reinforcement of bisphenol A-based benzoxazine (BA-a). RF were extracted from giant reed cane, and subjected to different chemical treatments using either alkaline, silane or their combining treatments. The examination of the structural, thermal, crystallinity and morphological properties of the untreated (NRF) and treated fibers (TRF) was carried out using different analytical techniques. Broadly, the morphology of the treated fibers is affected, their crystallinity and thermal stability increased. The investigation of the effect of the treated fibers on the curing kinetics of composites based on BA-a was performed by differential scanning calorimetry (DSC) technique, under non-isothermal conditions, and isoconversional integral kinetic methods. A decrease in the heat of curing as well as activation energy ( Ea ) was reported. The Avrami-Erofeev autocatalytic kinetic model was the most appropriate to describe the curing reactions and the predicted curves from the calculated kinetic parameters fitted well with experimental data.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
POLYMER COMPOSITES
·
2021
·Vol. 42
·期 10
·5199-5208
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IF 3.171
Wissam Bessa,Djalal Trache,Mehdi Derradji,Houda Ambar,Mokhtar Benziane,Bendiba Guedouar
In this research paper, bisphenol A aniline based benzoxazine (BA-a) was reinforced with natural, inexpensive, and largely distributed cellulosic plant, namely Arundo donax L. (AD) at various loadings of 5, 15, and 25 wt%. AD fibers were initially subjected to three different chemical surface modifications using alkaline, silane, and combined alkali-silane solutions. The main purpose of this work was to investigate the dynamic mechanical properties, morphological stability, and thermal stability of the as-prepared composites by pointing out the effects of natural reinforcements treated in different ways at different loadings. Dynamic mechanical analysis of the prepared composites revealed an enhancement in storage modulus ( E ′) and loss modulus ( E ″) to higher values, especially for composites reinforced by alkali- or combined-treated fibers due to the strong effect of alkaline solution to remove noncellulosic matters. Composite loaded at 25% of alkali-silane treated AD exhibited a glass transition temperature ( T g ) of 217°C, while pure polymer had a T g of 188°C. The enhanced properties are a great indicator of the high fiber–matrix adhesion and compatibility. This conclusion is strengthened by scanning electron microscopy images. The thermal stability and degradation of the different biocomposites are also investigated by thermogravimetric analysis, revealing that the nature of the employed chemical treatment affected considerably the thermal behavior and the char yield of the composites.
研究领域:
材料科学
·
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）