Gasification of Granulated Scrap Tires for the Production of Syngas and a Low-Cost Adsorbent for Cd(II) Removal from Wastewaters

Molino, Antonio; Erto, Alessandro; Natale, F. Di; Donatelli, Antonio; Iovane, Pierpaolo; Musmarra, Dino

doi:10.1021/ie4012084

Cited by 55 publications

(19 citation statements)

References 42 publications

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“…For EOL treatments, Molino et al [23] evaluated the energetic potential of an alternative to the recycling of tires in the field of environmental protection. Such a study concluded that the steam gasification of scrap tires was found as sustainable and cost effective alternative compared to disposal in landfill.…”

Section: State Of the Artmentioning

confidence: 99%

Environmental Impact of End-of-Life Tires: Life Cycle Assessment Comparison of Three Scenarios from a Case Study in Valle Del Cauca, Colombia

2017

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Life Cycle Assessment methodology has been applied to estimate diverse environmental impacts of different usage alternatives for worn-out tires at the end of their useful life in a case study at the Department of Valle del Cauca, Colombia. Different real scenarios were compared, which allowed for the assessment of the best environmental option for the management of worn-out tires. A method developed in the Institute of Environmental Sciences at University of Leiden, better known as CML-2001, was used to calculate the environmental impact indicators. The results show that the incineration of whole tires in cement plants, and the activities of grinding and floor manufacturing from granulated rubber, exhibited the best indicators, especially in terms of environmental load avoidance through the recovery of materials. Finally, the categories of depletion of the ozone layer, acidification, global warming potential, depletion of abiotic resources, and photochemical ozone formation revealed that the strongest environmental impacts are associated with retreading and the production of multipart asphalt. This is due to the use of synthetic rubber in the former alternative, and of liquid asphalt, gravel, and diesel consumption in the latter.

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Section: State Of the Artmentioning

confidence: 99%

Environmental Impact of End-of-Life Tires: Life Cycle Assessment Comparison of Three Scenarios from a Case Study in Valle Del Cauca, Colombia

2017

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“…However, they suffer from high cost, low efficiency, incomplete metal removal, high reagent and energy requirements, and the generation of secondary pollution [15]. Adsorption technology still remains attractive and represents an innovative and economical approach to arsenic removal [16][17][18].…”

mentioning

confidence: 99%

Continuous Fixed-Bed Column Study and Adsorption Modeling: Removal of Arsenate and Arsenite in Aqueous Solution by Organic Modified Spent Grains

Chen¹,

Wu²,

Chen³

et al. 2017

Pol. J. Environ. Stud.

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Arsenic is of environmental concern because of its toxicity to plants, animals, and humans. Arsenic in drinking water has the greatest impact on the general population and human health. In natural waters arsenic can be found in inorganic forms as oxidized pentavalent arsenate (As(V)) or trivalent arsenite (As(III)), mostly as H 2 AsO 4 -, HAsO 4 2-, H 3 AsO 3 , and H 2 AsO 3 - [1]. As(V) predominates in surface waters, while groundwater may also contain relevant concentrations of As(III) that are more mobile and toxic than As(V) [2]. Elevated concentrations of arsenic in groundwaters of China are the result of biogeochemical processes [3] or anthropogenic activities such as agriculture (the extensive use of herbicides and insecticides) and irregular disposal of hazardous waste from heavy industry [4][5].Long-term exposure through drinking water to even low concentrations of arsenic (≤50 μg/l) can cause Pol. J. Environ. Stud. Vol. 26, No. 4 (2017), 1847-1854 The adsorption of arsenate (As(V)) and arsenite (As(III)) was conducted in a continuous fixed-bed column by using organic modified spent grains (OSGs). The column performances were evaluated by varying the influent flow rate (0.91, 1.36, and 2.72 ml/min) and arsenic ions initial concentration (1.0, 2.0, and 6.0 mg/l for As(V); 0.5, 1.0, and 3.0 mg/l for As(III)) in order to obtain experimental breakthrough curves. The maximum adsorption capacity was at 6.0 mg/l for As(V) and 3.0 mg/l for As(III) influent concentration and 1.36 ml/min flow rate. The Thomas model, Adams-Bohart model, and Yoon-Nelson kinetic models were used to analyze column performance. The value of rate constant for Thomas and Adams-Bohart models decreased with increase of influent concentration, but increased with increasing flow rate. The rate constant for the Yoon-Nelson model decreased with increases in both initial influent arsenic ions concentration and flow rate.

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“…Many authors studied different techniques aimed to reduce toxic species in wastewater streams, which are summarized in two recent reviews (Fu and Wang 2011;Barakat 2011). Adsorption (Molino et al 2013;Di Natale et al 2015), chemical precipitation (Prisciandaro et al 2006), ion exchange, and evaporation are the most widely used techniques to remove heavy metals from aqueous effluents (Ku and Jung 2001;Alyüz and Veli 2009); however, they are not able, in some cases, to completely remove metals, they are expensive processes, and they have low selectivity (Ferella et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Removal from Liquid Wastes by Using Micellar-Enhanced Ultrafiltration

Tortora

Innocenzi

Prisciandaro

et al. 2016

Water Air Soil Pollut

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Wastewaters from civil and industrial use, which contain high concentration of heavy metals, pose the problem for their correct disposal. They cannot be directly discharged in sewage systems, as metal ions represent a serious problem not only for human health but also for the environment. In this paper, the removal of nickel, cobalt, chromium, and zinc ions from synthetic liquid wastes was carried out, by using a micellarenhanced ultrafiltration (MEUF) process; an ultrafiltration (UF) membrane (a monotubular ceramic of molecular weight cutoff 210 kDa) together with sodium dodecyl sulfate (SDS) as an anionic surfactant was used, in a lab-scale experimental device. The synthetic liquid contained 10-mg/L metal ions (Cr, Zn, Co, Ni), while SDS concentration varied from values above and below critical micellar concentration (CMC). The experiments were carried out at room temperature (25°C). Results achieved showed that SDS was able to bind metal ions, resulting in a strong increase of rejection coefficient, which reached highest values in case of SDS concentration below CMC, unexpectedly.

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Gasification of Granulated Scrap Tires for the Production of Syngas and a Low-Cost Adsorbent for Cd(II) Removal from Wastewaters

Cited by 55 publications

References 42 publications

Environmental Impact of End-of-Life Tires: Life Cycle Assessment Comparison of Three Scenarios from a Case Study in Valle Del Cauca, Colombia

Environmental Impact of End-of-Life Tires: Life Cycle Assessment Comparison of Three Scenarios from a Case Study in Valle Del Cauca, Colombia

Continuous Fixed-Bed Column Study and Adsorption Modeling: Removal of Arsenate and Arsenite in Aqueous Solution by Organic Modified Spent Grains

Heavy Metal Removal from Liquid Wastes by Using Micellar-Enhanced Ultrafiltration

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