Interfacial solar‐driven steam and electricity co‐generation using Hydrangea‐like graphene by salt‐assisted carbonization of waste polylactic acid

SusMat, Год журнала: 2024, Номер unknown

Опубликована: Сен. 23, 2024

Abstract The interfacial solar steam generation and water evaporation–driven power are regarded as promising strategies to address energy crisis. However, it remains challenging construct low‐cost evaporators for freshwater electricity co‐generation. Herein, we report a salt‐assisted carbonization strategy of waste polylactic acid prepare Hydrangea flower–like graphene build bi‐functional graphene‐based evaporator. evaporator presents merits good sunlight absorption, photo‐to‐thermal conversion property, transport, thermal management capability, negatively charged pores the continuous diffusion ions. Hence, achieves evaporation rate 3.0 kg m −2 h −1 output voltage 0.425 V, surpassing many advanced evaporators/generators. Molecular dynamics simulation result proves that more Na + ions attracted by functional groups, especially –COOH/C–OH, promote selectivity in nanochannels. This work offers new opportunities multifunctional

Язык: Английский

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Optimal sorting and recycling of plastic waste as a renewable energy resource considering economic feasibility and environmental pollution

Process Safety and Environmental Protection, Год журнала: 2022, Номер 169, С. 685 - 696

Опубликована: Ноя. 15, 2022

This work suggests an optimal strategy to sort and recycle plastic waste as a renewable energy resource with maximizing economic feasibility mitigating environmental pollution. To derive the sorting recycling strategies of waste, novel optimization model is developed; it calculates overall profit by subtracting from total annualized cost. Then used identify in mixed-integer nonlinear programming that maximizes profit. In derived strategy, high-density polyethylene recycled produce downgrade plastic; low-density polyethylene, polypropylene, polystyrene are pyrolysis oil; terephthalate refuse fuel. The case can significantly increase about 3,137% (i.e., 35 US$/1 kg plastic), 492% 29 plastic) compared conventional South Korea Japan respectively.

Язык: Английский

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Novel process design for waste energy recovery of LNG power plants for CO2 capture and storage

Energy Conversion and Management, Год журнала: 2022, Номер 277, С. 116587 - 116587

Опубликована: Дек. 22, 2022

In an liquefied natural gas (LNG) power plant, the amine scrubbing and CO2 liquefaction process are generally employed for capture storage (CCS) because it is suitable large-scale plants. However, a large amount of hot cold energy required absorption, regeneration liquefaction. As solution, waste LNG from regasification combined cycle (NGCC), which disposed into seawater, can be recovered utilized abovementioned purposes. Hence, this study suggested novel recovery plants CCS. The model consists following four steps: regasification, cycle, model, at lean cooler in each heat exchanger process. Furthermore, regeneration, NGCC stripper reboiler. exergy economic analyses were addressed to evaluate feasibility conversion proposed result, compared base process, net generation efficiency increased by 16% 8%, respectively. addition, profit 75%, indicating high feasibility. overall using observed increase, resulted decreased fuel usage. Therefore, we believe that approach contribute significantly improvements environmental protection efforts.

Язык: Английский

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Optimal strategy to sort plastic waste considering economic feasibility to increase recycling efficiency

Process Safety and Environmental Protection, Год журнала: 2022, Номер 165, С. 420 - 430

Опубликована: Июль 11, 2022

Язык: Английский

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Designing and integrating NOx, SO2 and CO2 capture and utilization process using desalination wastewater

Fuel, Год журнала: 2022, Номер 327, С. 124986 - 124986

Опубликована: Июль 2, 2022

Numerous industries are facing serious environmental contamination, because of the significant emission nitrogen oxide (NOx), sulfur dioxides (SO2), and carbon dioxide (CO2) it has become imperative to reduce these gaseous emissions. To pollution caused by emissions, desalination wastewater is possible be used contains highly concentrated useful mineral ions such as Ca2+, Mg2+, Na+ which react with carbonate, nitrogen, sulfate ions. This work designed integrated NOx, SO2, CO2 capture utilization processes using for cleaner production. design integrate process, a process model developed based on validated experimental data. The proposed comprises following three steps: (1) electrolysis metal ion separation produce NaOH, Mg(OH)2, Ca(OH)2; (2) NOx SO2 via (3) Mg(OH)2 Ca(OH)2. Then economic feasibility suggested demonstrated compared conventional assessment. As result, captured utilized at about 90% 99% respectively. In addition, 91% conversion yields each carbonate 63% demonstrate two cases set. Case 1 case that employs selective catalytic reduction (SCR), wet flue gas desulfurization (WFGD), uses amine absorbent an electrodialysis reclaiming unit. 2 SCR, WFGD, amines ion-exchange resin total annualized cost was ∼7.9% 14% lower than those 2,

Язык: Английский

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Multi-objective operation optimization of spent coffee ground torrefaction for carbon–neutral biochar production

Bioresource Technology, Год журнала: 2023, Номер 370, С. 128584 - 128584

Опубликована: Янв. 5, 2023

Язык: Английский

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Design of hybrid desalination process using waste heat and cold energy from LNG power plant increasing energy and economic potential

Journal of Cleaner Production, Год журнала: 2024, Номер 452, С. 141998 - 141998

Опубликована: Апрель 4, 2024

Язык: Английский

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Novel waste heat and oil recovery system in the finishing treatment of the textile process for cleaner production with economic improvement

International Journal of Energy Research, Год журнала: 2022, Номер 46(14), С. 20480 - 20493

Опубликована: Март 2, 2022

In the textile industry, reactive dyeing requires large volumes of hot water, which increases cost and energy consumption. Although waste heat exhaust gas from stentering process can be recovered to reduce consumption, fiber dust oil mist inside cause problems such as fouling clogged pores. Hence, a novel recovery system in finishing treatment is proposed for cleaner production with economic improvement. The comprises following steps: (a) split by electrostatic precipitator (ESP) at certain ratio through optimization its throughput key deciding variable profit. (b) A mathematical model overall cost, including profits savings attributed recovery, total capital investment, product additional ESP installation, designed identify an optimal ratio. (c) Fiber are removed using then recycled regenerated oil. Waste treated after exchange air water exchanger; this supplied minimize required heating water. (d) Finally, VOCs remaining pollutants activated carbon adsorption low-temperature-treated recovered. These processes recover achieve stability efficiency improvements because removal mist, dust, VOCs. As result, reduced 10.2% based on oil, dusts, odor, 95%, 89.86%, 96.28%, respectively.

Язык: Английский

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A genetic algorithm-based optimal selection and blending ratio of plastic waste for maximizing economic potential

Process Safety and Environmental Protection, Год журнала: 2024, Номер 186, С. 715 - 727

Опубликована: Апрель 6, 2024

Язык: Английский

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Towards a Circular Economy: Study of the Mechanical, Thermal, and Electrical Properties of Recycled Polypropylene and Their Composite Materials

Polymers, Год журнала: 2022, Номер 14(24), С. 5482 - 5482

Опубликована: Дек. 14, 2022

This research focuses on the mechanical properties of polypropylene (PP) blended with recycled PP (rPP) at various concentrations. The rPP can be added up to 40 wt% into matrix without significantly affecting properties. MFI increased increasing content. Modulus and tensile strength slightly decreased content, while elongation break 30.68% a increase in is probably caused by interfacial adhesion during blending process. electrical conductivity materials was improved adding carbon black matrices. It has significant effect composites. Stress-strain curves composites changed from ductile brittle behaviors. could poor interaction between black. FTIR spectra indicate that did not have any chemical reactions chains. obtained exhibited good performance tested. Finally, DSC results showed act as nucleating agents thus degree crystallinity PP.

Язык: Английский

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