Comparative life cycle assessment of two ceramsite production technologies for reusing municipal solid waste incinerator fly ash in China

Zhao, Hailong; Liu, Fang; Liu, Han-Qiao; Wang, Lei; Zhang, Rui; Ying, Hao

doi:10.1016/j.wasman.2020.06.016

Cited by 75 publications

(12 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Electric energy consumptions (KWh g –1 ) for 4-CN removal were calculated via the equation as follows: EC = U It /W, where U denotes applied potential (V vs reversible hydrogen electrode (RHE)), I denotes measured current (A), t denotes reaction time (h), and W denotes weight (of 4-CN, Cl – , and DOC, respectively). The life cycle assessment was performed according to the ISO 14040 and ISO 14044 standards by IKE Environmental Technology Co. Ltd., and the background data came from the Chinese Life Cycle Database (CLCD) . The CLCD included more than 600 life cycle inventory datasets for raw materials, chemicals, energy, transportation, and waste treatment .…”

Section: Methodsmentioning

confidence: 99%

Synergetic Hydroxyl Radical Oxidation with Atomic Hydrogen Reduction Lowers the Organochlorine Conversion Barrier and Potentiates Effective Contaminant Mineralization

Zhang

Lan

et al. 2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

For effective treatment and reuse of wastewater, removal of organochlorines is an important consideration. Oxidation or reduction of these compounds by one-component free radicals is difficult because of the high-energy barrier. Theoretical calculations predict that redox synergy can significantly lower the energy barriers. Hence, we developed an energy-efficient dual photoelectrode photoelectrochemical system wherein the oxidized and reduced radicals coexist. Taking p-chloroaniline as an example, the atomic hydrogen first initiates nucleophilic hydrodechlorination to form a critical intermediate followed by the electrophilic oxidation of the hydroxyl radical; the process shows stable free-energy changes. Compared to oxidation alone, the reaction rate and mineralization in the redox synergy system were ∼4.5 and ∼2.1 times higher, respectively. Nitrogen was also completely removed via this system. The full life cycle assessment with power consumption as the boundary showed that the proposed system was sustainable and highly energy efficient, ensuring its application in organochlorine wastewater treatment.

show abstract

Section: Methodsmentioning

confidence: 99%

Synergetic Hydroxyl Radical Oxidation with Atomic Hydrogen Reduction Lowers the Organochlorine Conversion Barrier and Potentiates Effective Contaminant Mineralization

Zhang

Lan

et al. 2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“… 21 Rotary kiln sintering and non-sintering methods were used to prepare ceramists with MSWI fly ash. 22 The second way of using MSWI residues is geotechnical engineering such as roads, embankments, etc. 23 MSWI residues used in agriculture as soil amendment has also been studied.…”

Section: Introductionmentioning

confidence: 99%

Municipal solid waste incineration residues recycled for typical construction materials—a review

Chen

Zhang

Xu³

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…The direct application of excavated soil is difficult due to its poor strength. Thus, the soil must be treated prior to usage in dams and roadbeds [28][29][30][31]. Chemicals such as admixtures are applied to react with the soil, altering the soil properties and increasing the corresponding strength.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Techno-Economic Feasibility for Excavated Soil Recycling in Shenzhen, China

et al. 2022

View full text Add to dashboard Cite

The existing recycling chain of construction and demolition waste generally considers soil inert solid waste to be sent to landfills. As the most significant component of C&D (construction and demolition) waste, excavated soil occupies approximately half of landfills. Currently, excavated soil is a big issue in China’s Pearl River Delta. This paper investigated the composition and quantity of excavated soil in Shenzhen, China. In particular, the potential market demand for critical recycled sand (a key recycled material extracted from the excavated soil) was estimated. Furthermore, the technical analysis for excavated soil recycling takes an entire excavated soil recycling process’s perspective, delving into the process flow for the excavated soil and the recycled sand’s physicomechanical properties. Then, two mainstream and legitimate models of excavated soil recycling were considered: stationary plant recycling and on-site recycling. Each model’s financial and economic viability was assessed. The financial analysis focuses on investors’ perspectives, whose primary goal is to assess their investment profitability. The economic feasibility of the excavated soil stationary plant recycling and on-site recycling models in Shenzhen were then compared via benefit and cost analysis during the lifetime of the recycling equipment. A comprehensive, complete cost calculation and investment analysis revealed that Shenzhen’s excavated soil recycling business is profitable under the current market conditions. This study investigates scaled and effective excavated soil recycling and gives a technically and economically viable reference to the global excavated soil issue.

show abstract

Comparative life cycle assessment of two ceramsite production technologies for reusing municipal solid waste incinerator fly ash in China

Cited by 75 publications

References 27 publications

Synergetic Hydroxyl Radical Oxidation with Atomic Hydrogen Reduction Lowers the Organochlorine Conversion Barrier and Potentiates Effective Contaminant Mineralization

Synergetic Hydroxyl Radical Oxidation with Atomic Hydrogen Reduction Lowers the Organochlorine Conversion Barrier and Potentiates Effective Contaminant Mineralization

Municipal solid waste incineration residues recycled for typical construction materials—a review

Evaluation of the Techno-Economic Feasibility for Excavated Soil Recycling in Shenzhen, China

Contact Info

Product

Resources

About