WBCWZ3WH
type: UserItem
resource: Life cycle assessment of powder and micro-grain activated carbon in a fluidized bed to remove micropollutants from wastewater and their comparison with ozonation
access date: 2020-11-19 10:08:11
repository: ScienceDirect
tagged: AutoTag
  label: Life cycle assessment
tagged: AutoTag
  label: fluidized bed
tagged: AutoTag
  label: micro-grain activated carbon
tagged: AutoTag
  label: micropollutants
tagged: AutoTag
  label: ozonation
tagged: AutoTag
  label: wastewater treatment

Life cycle assessment of powder and micro-grain activated carbon in a fluidized bed to remove micropollutants from wastewater and their comparison with ozonation
type: AcademicArticle
abstract: To tackle water micropollutant pollution, the development of an advanced wastewater treatment is necessary and should be supported by an environmental evaluation to guide decision-makers. Life cycle assessment (LCA) methodology has been applied in the literature for several technologies and highlighted the variability of results (e.g. site-specific conditions) and the limited (eco-)toxicity benefits compared to additional operating impacts. In this study, the LCA of an activated carbon (AC) adsorption process based on a fluidized bed (limiting AC usage) was performed to determine its optimal operating conditions (dosage, use of micro-grain – μGAC or powder – PAC) and environmental benefits compared to the common ozonation process. This study was based on pilot processes installed at the Seine Centre treatment plant (France), using sensitivity analyses to identify the conditions for choosing a technology. For the seven scenarios (fluidized bed with 10 and 20 mg/L, both for PAC and μGAC; ozonation with 0.6 and 0.9 gO3/gDOC; and pre-ozonation combined with μGAC), the operational impacts generated (energy and material use) and the impacts avoided (micropollutant removal) were evaluated for climate change, freshwater ecotoxicity and human toxicity (USEtox characterization factors for micropollutants complemented with literature data). The LCA results showed that the fluidized bed process should preferably be operated with μGAC rather than PAC. The advantage of μGAC adsorption compared to ozonation is negligible but could nevertheless be significant in European countries with a significant share of coal-based electricity (i.e. all countries except Sweden and France). As in most of the previous works, the (eco)toxicity impacts avoided were found to be negligible, but other substances, such as hormones and oxidation by-products, should be further considered and characterized to better represent the treatment performances. The combination of ozonation and μGAC adsorption on …
pages: 125067
doi: 10.1016/j.jclepro.2020.125067
language: en
creator: Person
author list: Person
is part of: Issue
  date: November 11, 2020
  is part of: Journal of Cleaner Production
    type: Journal
    short title: Journal of Cleaner Production
    issn: 0959-6526

Person
given name: Elorri
surname: Igos

Person
given name: Romain
surname: Mailler

Person
given name: Ronan
surname: Guillossou

Person
given name: Vincent
surname: Rocher

Person
given name: Johnny
surname: Gasperi