Recycling of pre-treated medical waste fly ash in mortar mixtures

Ababneh, Ayman; Al-Rousan, Rajai Z.; Gharaibeh, Wafaa; Abu-Dalo, Muna A.

doi:10.1007/s10163-019-00928-z

Cited by 21 publications

(27 citation statements)

References 27 publications

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“…In addition, an emergency treatment center ( Qianzishan ) using steam-based centralized treatment was constructed with two phases (each phase with the capacity of 30 tons/d) (Figure S4). Incineration and steam disinfection are both widely utilized technologies ( Ababneh et al., 2020 ; Dursun et al., 2011 ; Kaur et al., 2019 ), and can meet the requirements of current regulations under standardized management ( MEE, 2005 , 2006b ). Until Apr.…”

Section: Resultsmentioning

confidence: 99%

Emergency response to the explosive growth of health care wastes during COVID-19 pandemic in Wuhan, China

Yang

Xiao²,

Wu³

et al. 2021

Resources, Conservation and Recycling

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Hightlights The integrated management of HCWs in Wuhan was investigated and analyzed. The scope of HCWs was extended to reduce the transmitting risk of COVID-19. Stationary and co-processing facilities were preferential for HCWs disposal in Wuhan. The practices on HCWs are suggestive for other densely populated metropolises.

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Section: Resultsmentioning

confidence: 99%

Emergency response to the explosive growth of health care wastes during COVID-19 pandemic in Wuhan, China

Yang

Xiao²,

Wu³

et al. 2021

Resources, Conservation and Recycling

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“…Besides, in Jordan, most CWs were incinerated to reduce the amount of landfill space required. Heavy metals, on the other hand, can be found in the ashes of incinerator waste, facing a secondary contamination problem that must be treated (Ababneh et al 2020 ). Cement solidification is one of several methods for stabilising or removing heavy metals from ashes.…”

Section: Introductionmentioning

confidence: 99%

“…Cement solidification is one of several methods for stabilising or removing heavy metals from ashes. CWIFA was pre-treated before being recycled as supplementary cementitious material in mortar mixes (Ababneh et al 2020 ). After being collected from 252 health facilities in Istanbul, CW was burned at a daily rate of 35–40 tonnes.…”

Section: Introductionmentioning

confidence: 99%

“…Strength and leaching tests were used to determine the degree of effectiveness of the S/S product, and toxicity decreased as the strength of the S/S product increased. Meanwhile, Ababneh et al ( 2020 ) investigated the fresh and hardened properties of CWIFA in mortar. The results showed that CWIFA additions had no effect on the workability of CWIFA in mortar, and the compressive and flexural strength values were acceptable up to 20% replacement.…”

Section: Introductionmentioning

confidence: 99%

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An Overview of Characterisation, Utilisation, and Leachate Analysis of Clinical Waste Incineration Ash

Ghazali

Johari²,

Fauzi³

2022

Int J Environ Res

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As industrial globalisation and waste output continue to grow, solid waste management is one of the most pressing worldwide environmental challenges. Solid wastes include both the heterogeneous mass of urban throwaways and the homogeneous accumulations of agricultural, industrial, and mineral wastes. Clinical waste (CW) has a significant negative influence on both human health and the environment. To dispose hazardous CW, a proper waste management system should be necessary, and incineration should be the best possible option for reducing the volume of this hazardous waste. Incineration is being developed in Malaysia as a means of disposing clinical and hazardous waste. Currently, 170 common CW treatment facilities with 140 incinerators are accessible around the country. The combustion procedure kills pathogens and reduces waste volume and weight, but it leaves a solid residue known as clinical waste ash (CWA), which raises heavy metal, inorganic salt, and organic compound levels in the environment. Because metals are not eliminated during incineration, dumping CWA in a landfill could contaminate groundwater. Leachate is the liquid created when waste decomposes in a landfill and water filters through it. The most common method of disposing of CW ashes is to transfer them to a landfill. Landfills should install a top cover after closure for hazardous waste landfills. Due to a lack of space and the high expense of land disposal, recycling technologies and the reuse of ash in various systems have developed. Clinical waste incineration fly ash (CWIFA), a solid waste substance from CW incineration, typically includes mobile heavy metals and can cause significant pollution when reused. The standard requirement for removing CWIFA in dumpsites should be below the metal limit stated by the U.S. Environmental Protection Agency (USEPA). Much recent research on the usage of CWIFA has concentrated on mitigating their effects on the environment. Several studies have confirmed the utilisation of CWIFA in the construction field and agriculture to reduce the leaching of its hazardous components into the environment. Compressive strength decreased with the percentage amount of CWIFA due to the substitution of cement with CWIFA. CWIFA mix with 20% cement is the broad-scale application of CWIFA for geotechnical constructions. Heavy metals (Cd, Cu, Ni, Pb, and Zn) are strongly immobilised by the cementitious matrix. Solidification/stabilisation (S/S) materials can be dumped in landfills with less environmental protection than untreated waste. When utilising a CWIFA in mortar, the primary environmental concern is if any harmful materials leach out during the initial curing process or throughout the life of the mortar. Toxicity characteristic of leaching procedure (TCLP) analysis of all CWIFA specimens found amounts of heavy metals below regulatory limits. Solidification of waste with cement and solidified waste has become a popular way of minimising the atmosphere's emissions. The amount of CWIFA generated is expected to increas...

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“…The stabilization / solidification prohibited leaching of heavy metals from BMWA. Ababneh et al [19] studied the pretreatment of medical waste fly ash (MWFA) to remove heavy metals and then the possibility of reusing the pretreated MWFA in concrete mixes. Sathvik et al [20] examined the validity of biomedical waste (BMW) ash usage to partially replace cement in concrete mixes.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Approach for Recycling Medical Waste Needles to Partially Replace Aggregate in Lightweight Concrete Production

Hamada¹,

Ismail²

2021

Adv. Sci. Technol. Res. J.

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The generation of sharp waste from the activities of health care facilities is unavoidable. Waste needles are considered one of the most problematic issues in health facilities. This study involved an experimental investigation of reusing waste needles (WNs) in concrete mixes to partially replace the natural fine aggregate at 0%, 2%, 4%, 6%, 8% and 10% by weight. The mechanical and physical properties of the WNs-concrete mixes have been studied and compared to conventional concrete mix. The workability test, fresh and hard densities, compressive and flexural strengths, water absorption, and leaching test were carried. The curing ages considered for the concrete mixes were 7, 14, and 28 days. The results revealed that the WNs-concrete mixes exhibited improved flexural strength and workability, decreased water absorption capacity and improved durability. The compressive strength values of WNs-concrete mixes gradually decreased, but they were higher than the targeted mean strength of M17 grade concrete.

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Recycling of pre-treated medical waste fly ash in mortar mixtures

Cited by 21 publications

References 27 publications

Emergency response to the explosive growth of health care wastes during COVID-19 pandemic in Wuhan, China

Emergency response to the explosive growth of health care wastes during COVID-19 pandemic in Wuhan, China

An Overview of Characterisation, Utilisation, and Leachate Analysis of Clinical Waste Incineration Ash

Sustainable Approach for Recycling Medical Waste Needles to Partially Replace Aggregate in Lightweight Concrete Production

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