Microwave synthesis of zeolites from waste glass cullet using landfill leachate as a novel alternative solvent

Toxicological symptoms and leachates quality in Elelenwo Rivers State, Nigeria

“…Figure 2f shows the leachates' TDS levels in the two sites compared to the regulatory body maximum limit. Results revealed that the leachates in Elelenwo dumpsites, Rivers State, Nigeria are polluted, and under the current scenario of increasing water sheds pollution (Abbas et al, 2018;Ali et al, 2019;Barbosa Segundo et al, 2019;Camaño Silvestrini et al, 2019;Čelić et al, 2019;Chu et al, 2019;Costa et al, 2019;Fiorentino et al, 2019;Iqbal, 2016;Iqbal et al, 2019;Joshi and Gogate, 2019;Li et al, 2019;Ma et al, 2019;Majdinasab and Yuan, 2019;Nzediegwu et al, 2019;Poblete et al, 2019;Qi et al, 2019;Wang et al, 2019a;Wang et al, 2019b;Yang et al, 2019;Zhang et al, 2019), there is need to monitor water bodies' quality regularly and adopt the efficient methods to treat the wastewater www.bosaljournals/chemint/ editorci@bosaljournals.com (Caicedo et al, 2019;Hernández-Chover et al, 2018;Mohammadzadeh Pakdel and Peighambardoust, 2018;Salgot and Folch, 2018;Yu et al, 2019).…”

Hydrothermal synthesis of zeolites from green container glass

“…As previously stated, landfilling and stockpiling unrecycled soda-lime-silica container glass represents a considerable failure in sustainability considering the extensive energy-consumption and environmental impact associated with its manufacture and distribution (Mishra, 2015;Grbeš, 2016;Conradt, 2019). In response to this problem, recent research has been carried out to synthesize zeolites from flint, amber and green container glasses under various alkaline hydrothermal conditions (Espejel-Ayala et al, 2014;Terzano et al, 2015;Elmes et al, 2018;Lin et al, 2019;Majdinasab and Yuan, 2019a;Majdinasab and Yuan, 2019b;Collins et al, 2020;Taylor et al 2020). The impact of reaction composition and temperature has been investigated in a number of previous studies (Terzano et al, 2015;Majdinasab and Yuan, 2019a;Majdinasab and Yuan, 2019b); although, to date, little consideration has been given to the kinetics of evolution of the zeolitic phase assemblage (Taylor et al, 2020) and less still to the evaluation of the properties of the glass-derived products with respect to their potential technical applications.…”

“…In order to reduce the energy and time required to generate zeolites from waste container glass, their synthesis under microwave irradiation has recently been proposed (Majdinasab and Yuan, 2019a;Majdinasab and Yuan, 2019b). The preparation of container glass-derived zeolite A at room temperature has also been demonstrated, although only 15% crystallinity was achieved after 180 days from a mixture of 8 g glass and 0.5 g aluminum alloy in 80 cm 3 of 2.5 M NaOH(aq).…”

“…Recent initiatives to reutilize and upcycle waste container glass in the production of ceramics, geopolymers, building materials, ion-exchangers, sorbents and catalysts have been reported in the literature (Coleman et al, 2015;Silva et al, 2017;Bobirică et al, 2018;Elmes et al, 2018;Heriyanto et al, 2018;Ayala Valderrama et al, 2019;Giro-Paloma et al, 2019;Taylor et al, 2020). In particular, increasing attention has been given to the synthesis of zeolites from waste container glass as it potentially provides a consistent source of reactive silica, irrespective of color and origin (Espejel-Ayala et al, 2014;Terzano et al, 2015;Elmes et al, 2018;Lin et al, 2019;Majdinasab and Yuan, 2019a;Majdinasab and Yuan, 2019b;Collins et al, 2020;Taylor et al 2020). The amorphous silicate species in container glass are sufficiently reactive under mild hydrothermal conditions (typically 60 -200 °C in 1 -5 M alkaline hydroxide solution) to eliminate the need for pre-conditioning or activation by alkaline fusion (Terzano et al, 2015;Elmes et al, 2018).…”

“…The annual international market for synthetic zeolites is currently worth over 5 billion USD (Collins et al, 2020) and the use of waste feedstock materials represents potential reductions in cost, energy consumption, natural resources, landfilling, disposal and emissions. In this respect, various mixtures of zeolites have been prepared from ground container glass combined with numerous aluminum sources in alkali metal hydroxide solution under hydrothermal conditions (Espejel-Ayala et al, 2014;Terzano et al, 2015;Elmes et al, 2018;Lin et al, 2019;Majdinasab and Yuan, 2019a;Majdinasab and Yuan, 2019b;Collins et al, 2020;Taylor et al 2020).…”