Characterisation and partition of valuable metals from WEEE in weathered municipal solid waste incineration bottom ash, with a view to recovering

Abstract

WEEE are not recycled properly and are managed with the refuse fraction of MSW MSWI bottom ash is a potential source of valuable metals coming from WEEE MSWI bottom ash has been characterized to evaluate the recovery of valuable metals Valuable metals are mainly in fine fractions with lower contents than mineral sources Valuable metals are embedded in Si-matrix and require severe condition for extraction Highlights (for review)

Characterization of metal concentration, heavy metal elution, and desalination behavior of municipal solid waste incineration bottom and grate sifting deposition ash based on particle size

“…Although the particle size range was slightly different, the Pb in QGA in plant A was lower than that of a previous study, while Zn was similar or slightly lower [18]. Although many metal elements have been reported to have high concentrations in small particle sizes [24][25][26], this was not the case for Cu, Pb, and Zn. Compared with previous studies on municipal solid waste incinerators [23], the Pb, Cu, Zn, Cd, Cr, and Ag contents in QBA contained almost the same magnitude, whereas the contents of Cu and Zn for the 2.0-4.75 mm fraction in plant A were higher than those of previous studies [23].…”

High-Performance Flocculants for Purification: Solving the Problem of Waste Incineration Bottom Ash and Unpurified Water

“…22 Another challenge is the presence of a wide range of toxic derivatives, in particular, heavy metals, suspended particles, and aromatic molecules in domestic and industrial wastewater, which require efficient removal for purification and possible reuse [Figure 1c(i)]. 23,24 Efficient bottom ash and wastewater disposal are of international concern, affecting both the environment and human health. 25−27 Hence, research into resolving such issues is of considerable interest to our group and many others.…”

“…Currently, worldwide, approximately 100 billion tons of bottom ash is produced, of which only a part is utilized (Figure a) . Another challenge is the presence of a wide range of toxic derivatives, in particular, heavy metals, suspended particles, and aromatic molecules in domestic and industrial wastewater, which require efficient removal for purification and possible reuse [Figure c­(i)]. , Efficient bottom ash and wastewater disposal are of international concern, affecting both the environment and human health. − Hence, research into resolving such issues is of considerable interest to our group and many others. Based on its unique characteristics and structure, the flocculant, an inorganic metal polymer, has proved its advantages in the separation wastewater, thus combining metal ions (bottom ash) and impurities (waste water) for purification. − The above design was systematically optimized, and the preparation of the flocculant using bottom ash (Figure ) as well as the flocculation performance and mechanism was explored.…”

Introduction

“…The transition is quite a complex process that requires several changes and that usually happens in subsequent steps. Martinez et al identify the five categories of challenges a company must deal with when moving along the servitization process, namely embedded product-service culture, delivery of integrated offering, internal processes and capabilities, strategic alignment and supplier relationships [16]. PSS often include value adding services based on ICT contributions, both in terms of enhanced information and knowledge generation/sharing, as well as of additional functionalities [17,18].…”