Using modified fly ash for mercury emissions control for coal-fired power plant applications in China

Wang, Shumin; Zhang, Yongsheng; Gu, Yongzheng; Wang, Jiawei; Zhao, Lei; Cao, Yan; Romero, Carlos E.; Pan, Wei‐Ping

doi:10.1016/j.fuel.2016.02.043

Cited by 49 publications

(15 citation statements)

References 14 publications

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“…It is agreed from the literature that economic feasibility of the solution might have even a bigger weight depending on the stakeholders (Garcia-Segura et al, 2013;Ignacio Navarro et al, 2018;Tucker et al, 2018). The primary data used in this study indicate that the price of FA imported from China (10 €/tonne) is five times less that its selling price in Europe (Alberici et al, 2017;Wang et al, 2016). This means that from the perspective of concrete manufacturers and suppliers it would be more attractive to import FA from China regardless of the negative differential environmental impacts established in this study.…”

Section: Sensitivity To Allocation Scenariomentioning

confidence: 78%

“…In order to calculate the allocation scenario for FA; the difference in prices of FA relative to electricity in both countries were surveyed. In China, the cost of electricity and FA was found to be 0.11 €/kWh (CEIC, 2018) and 10 €/tonne (Alibaba, 2019;Wang et al, 2016) respectively, while the electricity price in Germany was 0.29 €/kWh (Statista, 2018). Due to the absence of any commercially available data Journal Pre-proof around the price of FA in Germany, it was assumed to be the same as that in the UK, which is 50 €/tonne (Alberici et al, 2017).…”

Section: Life Cycle Inventory Analysismentioning

confidence: 99%

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Comparative life cycle assessment between imported and recovered fly ash for blended cement concrete in the UK

Hafez

Kurda

Cheung

et al. 2020

Journal of Cleaner Production

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A UK government report released in 2017 indicated that fly ash (FA) production locally is expected to seize after 2021. This means that for the construction industry to meet its continuously increasing demand for an Ordinary Portland Cement (OPC) replacement, FA would probably need to be either imported or recovered from landfills through energy-intensive processes. Recent reports show that companies in the UK have already started importing FA from several countries from which Germany and China were chosen as case studies to exemplify the closest and furthest respectively. The environmental impact associated with the FA transportation raises concerns about the environmental sustainability of the final concrete product. Therefore, this study focuses on using a life cycle assessment (LCA) tool to analyse the environmental impact of importing FA from Germany and China and compare that to recovering landfilled FA in the UK. The study is the first of its kind to investigate the environmental impact of any of the alternatives. Using a Cradle-to-Gate approach and a mix of primary and secondary data, these alternatives were modelled and compared to conventional OPC and currently available locally sources of FA. Results show that the environmental burden from transporting FA from China to the UK will overcome the environmental benefits of it replacing OPC. It is then concluded that the most promising alternative for cleaner production of blended cement concrete is to recover the 50 million tonnes of landfilled FA from the UK using the Dry-processing technique explained in the study. The second best alternative is to import FA from a country within the Europe region to the UK.

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Section: Sensitivity To Allocation Scenariomentioning

confidence: 78%

Section: Life Cycle Inventory Analysismentioning

confidence: 99%

Comparative life cycle assessment between imported and recovered fly ash for blended cement concrete in the UK

Hafez

Kurda

Cheung

et al. 2020

Journal of Cleaner Production

View full text Add to dashboard Cite

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“…Materials to be made as adsorbents are also relatively easy to find. Fly ash from the power plant is also proven to be used as an adsorbent, which means recycling the waste to be more useful (Kołodyńska et al, 2017;Tohdee et al, 2018;S. Wang et al, 2016).…”

Section: The Environmental Impacts Of a Coal Power Plantmentioning

confidence: 99%

The Energy Provision Dilemma of Coal Versus Wind From the Economic, Environmental, and Social Perspective Within the Energy Security Framework

Asri

Yusgiantoro²

2020

Pertahanan

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<p class="Els-history-head">The energy security principle demands the fulfillment of availability, acceptability, affordability, accessibility, and sustainability. Under the financial constraints, it is very challenging to achieve. As a result, immediate decisions, often only based on the lowest cost neglecting the overall impacts, are taken. This study aims to reveal the energy provision dilemma through a literature review method and simple calculation analysis. This study intends to exemplify how to conduct an equitable analysis by comparing wind and coal power plants’ impacts from the economic, environmental, and social perspectives. This study finds that the mutually complement characteristics of NRE (New and Renewable Energy) and non-NRE (fossil energy sources) raise a dilemma in selecting the energy source, where the financial constraints exaggerate the dilemma. The study also finds that the electricity generating cost of coal is cheaper than wind, but the external costs turn over the result. Coal damages the environment more than wind, but the impacts are often neglected, and society bears the cost. A simple adsorption method could minimize the impacts, but it depends on the producers’ willingness to conduct, which eventually by the consumers’ willingness to pay the higher price. In the social aspect, both power plants have relatively more equal indirect impacts, but coal’s direct impacts are more detrimental than wind. While an energy source may excel the other, considering the specific circumstances is a must. Financial constraints aggravate the developing countries’ dilemma between achieving energy security or fulfilling the basic needs and pursuing economic growth</p>

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“…Fly ash (FA) is an industrial by-product derived the boilers in coal-fired enterprises, and typically composed of 90%-99% inorganic material, 1%-9% organic material and many other pollutants such as arsenic, cadmium, chromium, lead, mercury, and etc [1,2]. The stack or landfill of FA not only occupies a lot of land, but also pollutes soil, water and air [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZSM-5 zeolite from fly ash and its adsorption of phenol, quinoline and indole in aqueous solution

Liu

2020

Mater. Res. Express

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This work tries to synthesize ZSM-5 zeolite using fly ash (FA) by hydrothermal method and study the adsorption effect of the zeolite on phenol, quinoline and indole in aqueous solution. The zeolites were characterized with x-ray diffraction (XRD), scanning electron microscopy (SEM), x-ray fluorescence (XRF), fourier transformation infrared (FTIR) and N 2 adsorption-desorption isotherm. The characterization results showed that HZSM-5 zeolite was successfully synthesized. The higher mass ratio of sodium carbonate to fly ash during melting is beneficial to improve the purity of ZSM-5 zeolite and its removal rate of organic matters. These results have been confirmed by XRD and principal component analysis (PCA). The adsorption process of phenol, quinoline and indole in aqueous can be well described with the double exponential kinetic model. The adsorption capacity of ZSM-5 zeolite for phenol, quinoline and indoles can be up to 24.41 mg g −1 , 35.99 mg l −1 and 34.05 mg g −1 respectively, and the removal rates can reach up to 82.80%, 84.86% and 83.20% respectively. The optimal pH value for adsorption ranges from 5 to 7.

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Using modified fly ash for mercury emissions control for coal-fired power plant applications in China

Cited by 49 publications

References 14 publications

Comparative life cycle assessment between imported and recovered fly ash for blended cement concrete in the UK

Comparative life cycle assessment between imported and recovered fly ash for blended cement concrete in the UK

The Energy Provision Dilemma of Coal Versus Wind From the Economic, Environmental, and Social Perspective Within the Energy Security Framework

Synthesis of ZSM-5 zeolite from fly ash and its adsorption of phenol, quinoline and indole in aqueous solution

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