Next Sustainability最新文献_第5页

Sustainable fuel from agricultural waste: Mixture design optimization of refuse-derived fuel for enhanced energy output 农业废弃物的可持续燃料：提高能源输出的垃圾衍生燃料的混合设计优化

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100196

N.Y. Abd Halim, N.I.S. Muhammad, F.Z. Mansur, N. Ahmad

The growing demand for sustainable energy sources drives interest in utilizing agricultural waste for energy production. Refuse-Derived Fuel (RDF) offers a promising opportunity to convert this waste into a valuable alternative fuel comparable to coal. This study employs a statistical approach to identify the optimal combination of mixed agricultural waste for producing RDF while maximizing its energy content. RDF is formulated using empty fruit bunch (EFB), coconut shell (CS), coconut husk (CH) and palm kernel shell (PKS) in varying ratios ranging from 10 % to 50 %, comprising 20 combinations. Moisture content (MC, 5–8 %) was treated as a variable parameter in the model. The proximate analysis of RDF is conducted using a Thermo-Gravimetric Analyzer (TGA) to estimate the Higher Heating Value (HHV). Experimental data are fitted into a linear polynomial model using Design Expert Software V7 with D-optimal analysis to enhance statistical significance. The results indicate that HHV values range from 20.19 MJ/kg to 22.21 MJ/kg, depending on RDF composition and moisture content. Overall, this study highlights the potential of RDF derived from agricultural waste as a viable solid biofuel, providing both energy security and environmental benefits. The findings support the development of sustainable energy solutions by optimizing agricultural waste utilization for cleaner and more efficient fuel production. The model achieved an R² of 0.95 with a prediction error below 3 %, confirming its reliability and strong statistical evidence. These findings have practical applications for guiding RDF formulation strategies in industry to maximize calorific value while reducing dependence on coal.

对可持续能源日益增长的需求促使人们对利用农业废物进行能源生产产生了兴趣。垃圾衍生燃料（RDF）提供了一个很有希望的机会，将这些废物转化为与煤相当的有价值的替代燃料。本研究采用统计方法确定混合农业废弃物的最佳组合，以产生RDF，同时最大限度地提高其能量含量。RDF由空果束（EFB）、椰子壳（CS）、椰子壳（CH）和棕榈仁壳（PKS）组成，比例从10 %到50 %不等，包括20种组合。含水率（MC, 5-8 %）作为模型中的可变参数。利用热重分析仪（TGA）对RDF进行了近似分析，以估计其高热值（HHV）。实验数据采用Design Expert Software V7拟合成线性多项式模型，并进行d -最优分析，以提高统计显著性。结果表明，根据RDF组成和含水率的不同，HHV值在20.19 MJ/kg ~ 22.21 MJ/kg之间。总的来说，这项研究强调了从农业废物中提取的RDF作为一种可行的固体生物燃料的潜力，提供了能源安全和环境效益。研究结果支持通过优化农业废弃物利用，实现更清洁、更高效的燃料生产，开发可持续能源解决方案。模型的R2为0.95，预测误差小于3 %，证实了模型的可靠性和较强的统计证据。这些发现对于指导工业中RDF的制定策略以最大化热值同时减少对煤炭的依赖具有实际应用价值。

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Closing the PET plastic recycling loop: A sustainable transformation from plastic to fiber 关闭PET塑料回收循环：从塑料到纤维的可持续转变

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2024.100095

Theresa Massoud , Jacinta Dsilva

Universities and colleges are becoming models for the rest of the world in sustainability initiatives. A Dubai-based university has taken action by collaborating with two industry entities in the application of the 3 R Model to promote sustainability. This article aims to investigate each phase of this collaboration, which includes a waste management company to collect the community’s mixed plastic; a material recovery facility to segregate the polyethylene terephthalate (PET) plastic; and a sustainable manufacturing solutions entity called DGrade to sustainably transform the PET plastic into fibers that produce over 200 types of fabrics. DGrade synthesizes clothing and supplies from these fabrics that are sold back to the University. This process uses 76 % less energy, 20 % less water (remaining 80 % is recycled back), and lowers carbon emissions by 79 %. Giving PET plastic a second life provides a practical solution to the challenges posed by the global plastic waste crisis and successfully closes the loop on the recycling of PET plastic.

大学和学院正在成为世界其他地区可持续发展倡议的典范。迪拜的一所大学已经采取行动，与两个行业实体合作，应用3 R模型来促进可持续性。本文旨在调查这种合作的每个阶段，其中包括废物管理公司收集社区的混合塑料；用于分离聚对苯二甲酸乙二醇酯（PET）塑料的材料回收设施；以及一家名为DGrade的可持续制造解决方案实体，该实体将PET塑料可持续地转化为纤维，可生产200多种织物。DGrade从这些面料中合成服装和用品，并将其卖回大学。这个过程减少了76% %的能源消耗，减少了20% %的水（剩下的80% %被回收利用），减少了79% %的碳排放。给予PET塑料第二次生命为全球塑料废物危机带来的挑战提供了一个切实可行的解决方案，并成功地完成了PET塑料回收的循环。

引用次数: 0

Bioengineering in Solid-State Fermentation for next sustainable food bioprocessing 固态发酵的生物工程为下一个可持续的食品生物加工

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100105

Muyideen Olaitan Bamidele, Micheal Bola Bamikale, Eliseo Cárdenas-Hernández, Motolani Adepeju Bamidele, Guillermo Castillo-Olvera, José Sandoval-Cortes, Cristóbal Noe Aguilar

Solid-State Fermentation (SSF) is a breakthrough approach in the sustainable bioprocessing of foods that applies bioengineering techniques to enhance the accumulation of bioactive compounds in functional foods. A review of bioengineering strategies that optimize microbial growth and metabolite production in SSF systems is presented in this chapter, including novel bioreactor designs and genetic engineering of microorganisms combined with metabolic engineering. The present document also describes some of the important developments in the extraction and purification of bioactive molecules from SSF processes, with special emphasis on their potential for using waste from the food industry to reduce the environmental burden. Combining SSF with state-of-the-art biotechnological tools aids in the efficient production of high value-added compounds, placing a strong basis for economic-ecological sustainability. The document further elaborates on the optimization techniques necessary for the maximum efficiency of SSF processes, trends, and challenges in the area in the future, and case studies that illustrate their application in real life. By providing an incisive review of the present status and future directions of SSF in food bioprocessing, this contribution highlights the importance of SSF in promoting sustainable food production systems.

固态发酵（SSF）是一种突破性的食品可持续生物加工方法，它应用生物工程技术来提高功能性食品中生物活性化合物的积累。本章综述了优化SSF系统中微生物生长和代谢物生产的生物工程策略，包括新型生物反应器设计和微生物基因工程与代谢工程相结合。本文件还描述了从SSF过程中提取和纯化生物活性分子的一些重要进展，特别强调了它们利用食品工业废物减轻环境负担的潜力。将SSF与最先进的生物技术工具相结合，有助于高效生产高附加值化合物，为经济生态可持续性奠定坚实基础。该文件进一步阐述了SSF过程效率最大化所需的优化技术，未来该领域的趋势和挑战，以及说明其在现实生活中的应用的案例研究。通过对SSF在食品生物加工中的现状和未来方向的深刻回顾，本贡献强调了SSF在促进可持续粮食生产系统中的重要性。

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引用次数: 0

Assessment of mango-based intercropping systems for productivity, resource use efficiency and environmental sustainability in tropical region of India 评估印度热带地区以芒果为基础的间作系统的生产力、资源利用效率和环境可持续性

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100121

Kundan Kishore , G. Sangeetha , T.R. Rupa , A.N. Ganeshmurthy , Deepa Samant , G.C. Acharya , P. Srinivas

Mango is the most important fruit crop of India which is primarily characterized by monocropping, low-density planting and low productivity. Intercropping in low density orchards is one of the most viable options for enhancing profitability as well as for promoting climate resilience. Hence mango-based intercropping systems viz. mango + pineapple (M + P), mango + ber (M + B), mango + dragon fruit (M + D) and mango + dragon fruit + pineapple (M + D + P), were evaluated in terms of productivity, profitability, resource use efficiency, and carbon and energy efficiency with the monoculture of mango. Mango + pineapple (M + P) demonstrated markedly higher land equivalent ratio (1.68), water productivity (16.54 kg m⁻³), partial factor productivity (32.87), sustainable yield index (0.83) and sustainable value index (0.81) followed by M + D + P intercropping system. M + D + P system exhibited higher system productivity (31.14 Mg ha⁻¹), production efficiency (85.31 kg day⁻¹ ha⁻¹) and relative economic efficiency followed by M + P system. M + P system demonstrated significantly low carbon footprint (0.26 CE kg⁻¹) and energy footprint (1.67 MJ kg⁻¹) per unit of fruit production. M + P system was also the most efficient system in terms of carbon efficiency (1.28), energy use efficiency (1.32), energy productivity (0.65 kg MJ⁻¹) and energy profitability. The findings clearly suggest that M + P and M + D + P are the most economically viable and sustainable intercropping systems in tropical region of India. Both the intercropping systems may also be considered climate resilient on the basis of water productivity, sustainability index and carbon and energy footprint.

芒果是印度最重要的水果作物，其主要特点是单作、低密度种植和低生产力。在低密度果园中间作是提高盈利能力和促进气候适应能力的最可行选择之一。因此，以芒果为基础的间作系统，即芒果+ 菠萝（M + P）、芒果+ ber （M + B）、芒果+ 火龙果（M + D）和芒果+ 火龙果+ 菠萝（M + D + P），在芒果单作的情况下，从生产力、盈利能力、资源利用效率、碳和能源效率等方面进行了评价。芒果+ 菠萝（M + P）的土地当量比（1.68）、水分生产力（16.54 kg M−3）、部分要素生产力（32.87）、可持续产量指数（0.83）和可持续价值指数（0.81）均显著高于M + D + P间作。M + D + P体系表现出较高的系统生产力（31.14 Mg ha−1）、生产效率（85.31 kg day−1 ha−1）和相对经济效益，M + P体系次之。M + P系统的单位水果产量碳足迹（0.26 CE kg−1）和能量足迹（1.67 MJ kg−1）显著降低。M + P系统在碳效率（1.28）、能源利用效率（1.32）、能源生产率（0.65 kg MJ−1）和能源盈利能力方面也是最有效的系统。研究结果清楚地表明，M + P和M + D + P是印度热带地区经济上最可行和可持续的间作制度。根据水生产力、可持续性指数以及碳和能源足迹，这两种间作系统也可被认为具有气候适应性。

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引用次数: 0

Assessment of nanoparticles and algae as mediators with Trifolium sp. for the assembly of biosolar cells 纳米颗粒和藻类作为三叶草类生物太阳能电池组装介质的评价

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100120

Ayesha Alam , Arifa Tahir , Faiza Anum , Labeeb Ali , Kanza Butt , Ihsan Ali

This work focuses on overcoming the electrical energy crisis by constructing small-scale, cost-effective, eco-friendly, and solar energy-derived biosolar cells for power generation. Trifolium sp., also known as clover, is flexible and adaptable to all ecological conditions, produces high biomass per unit land area, contains low lignin content, and is cost-intensive. It is reported to have high photosynthetic activity thus making it a potential choice over other biological components (plants, bacteria, microalgae) for constructing solar cells as the base medium. The experiment tested the ground biomass of Trifolium sp. fresh leaves with four potential mediators including titanium dioxide (TiO2), silver (Ag-Np), and gold nanoparticles (Au-Np), and blue-green spirulina algae to optimize the energy efficiency of Trifolium ground fresh leaves biomass under varying light intensities and cell sizes during the day. The results indicated Trifolium sp. as a potential plant that can efficiently convert solar energy into electrical energy without adding mediators. The response optimization desirability function (d= 0.991) validated the highest current yield of 718 mA from 252 cm² (approx. avg of 4.01 mA/cm²) cell plate in non-mediated biosolar cell and (d= 0.94) 1476 mA from 140 cm² (approx. avg. of 10.5 mA/cm²) from microalgae-mediated solar plates. This study supports Trifolium sp. as an eco-friendly material for the construction of cost-effective biosolar cells and output was improved with the supplementation of spirulina algae. The optimum size of the solar panel is still a debatable question, and more research experiments with the integration of green biomass and nanotechnology are suggested. The concept paves the way for the valorization of organic biomass waste as a potential input resource for future electrical power generation.

这项工作的重点是克服电力能源危机，通过建造小型，成本效益，环保，太阳能衍生的生物太阳能电池发电。Trifolium sp.，也被称为三叶草，是灵活的，适应所有的生态条件，每单位土地面积产生高生物量，含有低木质素含量，是成本密集型的。据报道，它具有很高的光合活性，因此使其成为构建太阳能电池的潜在选择，而不是其他生物成分（植物，细菌，微藻）作为基础培养基。利用二氧化钛（TiO2）、银纳米粒子（Ag-Np）、金纳米粒子（Au-Np）和蓝绿螺旋藻等4种介质对三叶草（Trifolium sp.）鲜叶的地上生物量进行测试，优化白天不同光照强度和细胞大小下三叶草鲜叶地上生物量的能量利用效率。结果表明，三叶草是一种有潜力的不添加介质就能有效地将太阳能转化为电能的植物。响应优化期望函数（d= 0.991）验证了252 cm2的最高电流产率为718 mA（约0.991）。（d= 0.94）从140 cm2到1476 mA（约0.94），平均为4.01 mA/cm2。平均值为10.5 mA/cm2)。该研究支持了三叶草作为一种环保材料用于构建具有成本效益的生物太阳能电池，并且随着螺旋藻的补充，产量得到了提高。太阳能电池板的最佳尺寸仍然是一个有争议的问题，建议更多的绿色生物质和纳米技术相结合的研究实验。这一概念为有机生物质废物作为未来发电的潜在投入资源的增值铺平了道路。

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引用次数: 0

Activated clay and cocoa nib shells-integrated polyvinyl alcohol membranes for fouling mitigation in water treatment 活性粘土和可可笔尖壳-集成聚乙烯醇膜在水处理中的污染缓解

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100136

Elikplim Nyabi , Roland Tsoeke Agbetsi , Gideon Addai , Francis Opoku , Mandela Toku , Ray Bright Voegborlo , Eric Selorm Agorku

In this study, an innovative membrane engineering strategy combining polyvinyl alcohol (PVA) crosslinked with formaldehyde and reinforced with varying amounts of activated clay (AC) and cocoa nib shells (CNS) was used to fabricate ultrafiltration membranes for methylene blue (MB) dye removal. Characterization techniques such as zeta potential (ZP), ¹HNMR, FTIR, SEM-EDS and XRD were used to verify the successful fabrication of these composite membranes. The synergy between AC’s surface charge modulation and CNS’s microstructural enhancement creates a dual-function mechanism of Donnan exclusion and size-sieving, which significantly boosts separation efficiency and antifouling performance. Composite membrane, M_AC3.0/CNS3.0 achieved a porosity of 68 % and a pure water flux (PWF) of 71 L/m²h, outperforming pristine PVA membrane (M_PVA), which showed 52.1 % porosity and 55.4 L/m²h flux. The addition of 4.3 wt% of each filler yielded a 30.3 % increase in porosity and a 28.1 % improvement in PWF. Dye rejection reached 95.7 % for M_AC3.0/OM3.0. While the flux recovery ratio (FRR) rose from 70.4 % (M_PVA) to 89.8 % (M_AC3.0/CNS3.0), indicating superior antifouling properties. This work provides a sustainable, low-cost and scalable membrane modification pathway for high-efficiency dye wastewater treatment.

在这项研究中，采用一种创新的膜工程策略，将聚乙烯醇（PVA）与甲醛交联，并用不同数量的活性粘土（AC）和可可笔尖壳（CNS）增强，制备了用于去除亚甲基蓝（MB）染料的超滤膜。利用ZP电位、1HNMR、FTIR、SEM-EDS和XRD等表征技术对复合膜的制备进行了验证。AC的表面电荷调制和CNS的微结构增强协同作用形成了Donnan排除和粒度筛选的双重功能机制，显著提高了分离效率和防污性能。MAC3.0/CNS3.0复合膜的孔隙率为68% %，纯水通量（PWF）为71 L/m2h，优于原始PVA膜（MPVA）的孔隙率为52.1% %，通量为55.4 L/m2h。每种填料添加4.3 wt%，孔隙率增加30.3% %，PWF改善28.1% %。MAC3.0/OM3.0染料去除率达95.7% %。而通量回收率（FRR）从70.4 % （MPVA）提高到89.8 % (MAC3.0/CNS3.0)，具有较好的防污性能。本研究为染料废水的高效处理提供了一条可持续、低成本、可扩展的膜改性途径。

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引用次数: 0

Effect of environmental exposure on long-term tensile strength of tin slag polymer concrete 环境暴露对锡渣聚合物混凝土长期抗拉强度的影响

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100139

Muhamad Soffi Bin Manda , Mohd Ruzaimi Mat Rejab , Shukur Abu Hassan , Mat Uzir Bin Wahit , Joseph Selvi Binoj , Brailson Mansingh Bright , Siti Safarah Binti Amirnuddin , Alamry Ali , Kheng Lim Goh

This investigation presents the influence of different environmental exposures on splitting tensile strength of long term cured Tin Slag Polymer Concrete (TSPC). Cylindrical TSPC specimens were moulded with tin slag and unsaturated polyester resin in the ratio 30:70 and exposed to indoor, outdoor and industrial environments. After 12 months of exposure, they were tested for its splitting tensile strength characteristics. The TSPC samples exposed to industrial (aggressive) environment reads an average value of 10.36 MPa. On the other hand, TSPC samples exposed to indoor (controlled) and outdoor (tropical climate) environments depict an average value of 7.92 MPa and 8.37 MPa respectively. Failure modes of TSPC for long term curing revealed splitting of sample along diametrical line with some parts peeling off from the middle section. Analysis of the stress-strain data revealed that all TSPC specimens exhibited linear behavior up to the peak load. Beyond this point, the specimens continued to fissure without additional strain. This behavior indicates a perfectly brittle failure mode which makes them suitable for structural applications. These findings support sustainable construction practices by promoting resource efficiency and delivering economic benefits to society.

研究了不同环境暴露对长期固化锡渣聚合物混凝土（TSPC）劈裂抗拉强度的影响。用锡渣与不饱和聚酯树脂按30:70的比例进行成型，分别置于室内、室外和工业环境中。暴露12个月后，测试其劈裂拉伸强度特性。暴露于工业（侵略性）环境中的TSPC样品的平均值为10.36 MPa。另一方面，暴露于室内（受控）和室外（热带气候）环境的TSPC样品的平均值分别为7.92 MPa和8.37 MPa。TSPC长期养护的破坏模式表现为试样沿直径线分裂，部分零件从中部剥落。应力应变数据分析表明，所有TSPC试件在峰值荷载前均表现为线性行为。超过这一点，试样继续破裂，没有额外的应变。这种行为表明了一种完美的脆性破坏模式，使它们适合于结构应用。这些发现通过提高资源效率和为社会带来经济效益来支持可持续建筑实践。

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引用次数: 0

Low carbon hydrogen readiness in the United Arab Emirates: Status, SWOT analysis and strategy matrix 阿联酋的低碳氢准备：现状、SWOT分析和战略矩阵

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100212

Elliott Meighan, Sharon Joyce, Somtochukwu Godfrey Nnabuife, Eni Oko

Hydrogen is expected to be pivotal in the United Arab Emirates' (UAE) transition to net-zero emissions by 2050. Using structured literature review and SWOT (Strengths, Weaknesses, Opportunities, Threats) analytical methodology, this study assesses the UAE's technological, economic, and policy preparedness to achieve their 2031 hydrogen target. Their strengths include the high solar energy potential, cooperative international collaborations, and ambitious policy structures; weaknesses include high reliance on imported technologies, lack of domestic demand, and high production costs. Industrial cluster development, the possibility of hydrogen exports, and the use of pre-existing infrastructure are among the opportunities for growth. However, significant threats, like water scarcity, regulatory fragmentation, and global competition, pose challenges to progress. A strategic matrix was developed to translate these results into actionable policy avenues. The study concludes that, without increased domestic investment in research and development, harmonisation of regulatory actions, and accelerated infrastructure development, the UAE may fail to meet its 2031 hydrogen target. Recommendations include the implementation of global certification standards, incentivisation of domestic electrolyser manufacturing, and the use of expanded renewable energy sources for green hydrogen production.

预计到2050年，氢将在阿拉伯联合酋长国向净零排放过渡的过程中发挥关键作用。本研究使用结构化文献综述和SWOT（优势、劣势、机会、威胁）分析方法，评估了阿联酋为实现2031年氢目标所做的技术、经济和政策准备。它们的优势包括太阳能的巨大潜力、合作的国际合作和雄心勃勃的政策结构；弱点包括高度依赖进口技术、缺乏国内需求和高生产成本。产业集群发展、氢气出口的可能性以及现有基础设施的使用都是增长的机会。然而，水资源短缺、监管分散和全球竞争等重大威胁对进步构成了挑战。制定了一个战略矩阵，将这些结果转化为可操作的政策途径。该研究的结论是，如果不增加国内研发投资、协调监管行动和加速基础设施建设，阿联酋可能无法实现其2031年的氢目标。建议包括实施全球认证标准、激励国内电解槽制造、扩大可再生能源的使用以实现绿色制氢。

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引用次数: 0

Development of high-performance concrete using guinea corn and rice husk ashes as replacement for silica fume 玉米、稻壳灰替代硅灰高性能混凝土的研制

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100203

Kehinde Olukemi Olorunfemi, Samson Olalekan Odeyemi, Mohammed Abdulkareem Adisa

High-Performance Concrete (HPC) offers higher strength and durability compared to nominal concrete. Silica fume, a key cementitious material in HPC, significantly enhances mechanical performance because of its fine particle size and high reactivity. However, Nigeria’s dependence on imported silica fume poses sustainability and cost challenges. Between August 2023 and July 2024, imports increased by 400 %, with a single exporter serving one buyer. By July 2024, no imports were recorded, revealing the volatility and risks of relying on foreign supply. This study investigates the potential of Guinea Corn Husk Ash (GCHA) and Rice Husk Ash (RHA), agricultural wastes abundantly available in Nigeria, as sustainable alternatives to silica fume in HPC production. The characteristics of GCHA and RHA were evaluated, alongside their effect on concrete workability and strength. Findings showed that RHA improves compressive, tensile, and flexural strengths due to its high amorphous silica content and reactive surface. GCHA, with lower reactivity and higher water demand, causes a gradual decline in strength properties. However, an optimized blend containing 8 % GCHA and 22 % RHA achieved a compressive strength of 50 N/mm², along with improved sustainability and adequate workability. These findings support the use of local pozzolans in cost-effective, high-performance concrete.

高性能混凝土（HPC）与标称混凝土相比具有更高的强度和耐久性。硅灰是高性能混凝土的关键胶凝材料，其颗粒细、反应活性高，显著提高了机械性能。然而，尼日利亚对进口硅粉的依赖带来了可持续性和成本挑战。在2023年8月至2024年7月期间，进口增长了400 %，一家出口商服务于一家买家。到2024年7月，没有任何进口记录，显示出依赖外国供应的波动性和风险。本研究调查了几内亚玉米壳灰（GCHA）和稻壳灰（RHA）的潜力，尼日利亚丰富的农业废物，作为可持续的替代品，在高性能pc生产硅灰。评估了GCHA和RHA的特性，以及它们对混凝土和易性和强度的影响。研究结果表明，RHA由于其高非晶二氧化硅含量和活性表面而提高了抗压、拉伸和弯曲强度。GCHA具有较低的反应活性和较高的需水量，导致强度性能逐渐下降。然而，含有8 % GCHA和22 % RHA的优化混合物实现了50 N/mm²的抗压强度，以及改善的可持续性和足够的可工作性。这些发现支持将当地火山灰用于具有成本效益的高性能混凝土中。

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引用次数: 0

Assessment of waste lithium-ion batteries generation from laptops and mobile phones in Saudi Arabia: Forecasting, material recovery, and recycling profitability 沙特阿拉伯笔记本电脑和手机产生的废锂离子电池的评估：预测、材料回收和回收盈利能力

Next Sustainability

Pub Date : 2025-01-01 DOI: 10.1016/j.nxsust.2025.100202

Md Tasbirul Islam , Amjad Ali

Electronic waste (e-waste) is one of the fastest-growing waste streams globally, presenting significant environmental and resource recovery challenges. Small IT and screen devices, such as mobile phones and laptops, contain valuable metals and lithium-ion batteries (LIBs), necessitating efficient end-of-life management. Saudi Arabia, as one of the largest e-waste generators in the Gulf Cooperation Council (GCC) countries, lacks comprehensive assessments of obsolete devices, particularly waste LIBs. Addressing this gap is crucial for developing effective policies and recycling strategies. This study estimates waste LIB generation from obsolete laptops and mobile phones in Saudi Arabia between 2000 and 2030. A forecasting approach integrating the Autoregressive Integrated Moving Average (ARIMA) model with a Weibull distribution-based model is used to project past and future waste generation. Results indicate that by 2030, a total of 7515 tons of waste will be generated from these devices, including 1110 tons of waste LIBs. The study highlights substantial resource recovery potential, with 77.74 tons each of cobalt and lithium, along with 177 tons of graphite and 166 tons of aluminum, available for recycling by 2030. Among recycling technologies, hydrometallurgical processing offers the highest economic viability, with an estimated average net profit of $2.96 million. These findings underscore the urgent need for structured e-waste and waste battery management policies and infrastructure in Saudi Arabia, promoting economic and environmental benefits through enhanced resource recovery and circular economy integration.

电子废物是全球增长最快的废物流之一，对环境和资源回收提出了重大挑战。小型IT和屏幕设备，如移动电话和笔记本电脑，含有贵重金属和锂离子电池（lib），需要有效的报废管理。沙特阿拉伯作为海湾合作委员会（GCC）成员国中最大的电子垃圾产生国之一，缺乏对废弃设备，特别是废弃lib的全面评估。解决这一差距对于制定有效的政策和回收战略至关重要。这项研究估计了2000年至2030年间沙特阿拉伯废弃笔记本电脑和手机产生的废锂电池。采用自回归综合移动平均（ARIMA）模型和基于威布尔分布的模型相结合的预测方法来预测过去和未来的垃圾产生量。结果表明，到2030年，这些装置将产生7515吨废物，其中包括1110吨废lib。该研究强调了巨大的资源回收潜力，到2030年，钴和锂各有77.74吨，以及177吨石墨和166吨铝可回收利用。在回收技术中，湿法冶金加工具有最高的经济可行性，估计平均净利润为296万美元。这些发现强调了沙特阿拉伯迫切需要结构化电子废物和废电池管理政策和基础设施，通过加强资源回收和循环经济整合来促进经济和环境效益。

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引用次数: 0