Search results for " waste"
showing 10 items of 809 documents
Plastmasas likvidējamība no Zero Waste dzīvesveida perspektīvas
2018
Zero waste dzīvesveida mērķis ir samazināt savu patēriņu un mājsaimniecībā radīto atkritumu, it īpaši plastmasas atkritumu, daudzumu. Šis pētījums paver ieskatu cilvēku sarežģītajās attiecībās ar plastmasu un atklāj vides aizsardzības jomā aktualizēto problēmu iespaidu uz indivīdiem un centienus šos ieteikumus un principus realizēt ikdienas dzīvē. Plastmasa kļūst par morālu problēmu tās visuresamības un pretrunīguma dēļ.
Mobilising Consumers for Food Waste Reduction in Finnish Media Discourse
2019
Raippalinna explores how consumers are mobilised for food waste reduction in media discourse. Food waste reduction initiatives are often criticised for putting the responsibility on individual consumers, but little research exists on the mobilisation of consumers in actual contexts. Through critical discourse analysis of media texts, Raippalinna investigates how the food waste problem and consumers are constructed in relation to each other in Finlands leading newspaper Helsingin Sanomat 2010–2017. The analysis demonstrates that the discourses of consumer mobilisation appear mostly as consumer education where the consumer’s role is to manage individual consumption and household practices. Th…
Knowledge and awareness regarding biomedical waste management in dental teaching institutions in India- A systematic review.
2014
Objectives: Proper handling, treatment and disposal of biomedical wastes are important elements in any health care setting. Not much attention has been paid to the management of Biomedical Waste (BMW) in recent years, in dental colleges and hospitals in India. The present systematic review was conducted to assess knowledge and awareness regarding BMW management among staff and students of dental teaching institutions in India. Material and Methods: A systematic review of relevant cross-sectional studies was conducted regarding BMW management in India in dental teaching institutions in India. Six studies were finally included in the present review after conducting both electronic and manual …
The Management of Health Hazards Related to Municipal Solid Waste on Fire in Europe: An Environmental Justice Issue?
2020
Landfilling should be the last option in an integrated Municipal Solid Waste (MSW) management approach. In the European Union (EU), the policy framework to protect the environment and the public health against the impact of health hazards related to urban solid waste management has been consistently implemented in recent decades. A growing interest in the negative impact of fires in waste landfills on the environment and people’s health was reported in some European countries. In Italy, an increasing occurrence of arsons in MSW and landfills has been reported in recent years. During the summer of 2012, a multi-site arson occurred in the Palermo Municipal solid waste landfill of Bellolampo (…
Occurrence of Microplastics in Waste Sludge of Wastewater Treatment Plants: Comparison between Membrane Bioreactor (MBR) and Conventional Activated S…
2022
In this study, the presence of microplastics in the sludge of three wastewater treatment plants (WWTPs) was examined. The investigated WWTPs operated based on a conventional activated sludge (CAS) process, with (W1) or without (W2) primary clarification, and a membrane bioreactor process (MBR) (W3). The microplastics (MPs) concentration in the samples of W3 was approximately 81.1 ± 4.2 × 103 particles/kg dry sludge, whereas MPs concentrations in W1 and W2 were 46.0 ± 14.8 × 103 particles/kg dry sludge and 36.0 ± 5.2 × 103 particles/kg dry sludge, respectively. Moreover, MPs mainly consisted of fragments (66–68%) in the CAS plants, whereas the fra…
AN INTEGRATED APPROACH FOR THE HCl AND METALS RECOVERY FROM WASTE PICKLING SOLUTIONS: PILOT PLANT DESIGN AND OPERATIONS
2020
Pickling is one of the key steps in the hot-dip galvanizing process, where HCl solutions are largely used to remove metal oxides from metallic surfaces, thus generating spent waste liquors containing high concentrations of metals and acid. Disposal of the industrial pickling waste dramatically affects the hot-dip galvanizing industry economics and environmental footprint. Thus, reducing strong acid waste disposal is one of the most beneficial steps to enhance the process sustainability. Moreover, the continuous regeneration of pickling solutions enhances pickling rate and process performance, also minimizing industrial wastewater disposal and chemicals consumption promoting the circular use…
DEVELOPMENT AND MODELING OF MEMBRANE PROCESSES FOR THE REGENERATION OF ACID PICKLING SOLUTIONS
2021
The doctoral thesis focuses on a novel integrated process for the recovery and valorisation of acid and metal salts present in the waste solutions of the pickling process. The proposed process is based on the integration of two innovative membrane technologies, the Diffusion Dialysis and the Membrane Distillation, coupled with a reactive precipitation section. This hybrid process allows the recovery and the enhancement of waste solutions, as well as optimal operating conditions for the continuous pickling process, thus improving its efficiency. Hydrochloric acid recovery was assessed through a detailed study on the Diffusion Dialysis process by implementing a wide experimental campaign usin…
Zastosowanie skorup jaj do usuwania metali ciężkich ze ścieków z instalacji odsiarczania spalin
2018
Przeprowadzono badania skuteczności usuwania kationów Ni, Cu i Cd z roztworów wodnych z zastosowaniem wapienia marglistego, skorup jaj kurzych przeznaczonych do konsumpcji oraz skorup jaj kurzych po wylęgu, których głównym składnikiem jest węglan wapnia. Skorupy jaj kurzych są produktem ubocznym przemysłu spożywczego, który może znaleźć zastosowanie jako zamiennik wapienia marglistego wykorzystywanego do usuwania metali ciężkich z instalacji mokrego odsiarczania spalin. Do badań użyto mieszanych roztworów Ni, Cu i Cd składem zbliżonych do ścieków z instalacji mokrego odsiarczania spalin: Ni (0,526-3,118 mg/dm3 ), Cu (0,483-4,285 mg/dm3 ) i Cd (0,372-0,875 mg/dm3 ). Metale oznaczano metodą a…
Biotic oxidation of methane in landfills in boreal climatic conditions
2010
This study focused on the biotic oxidation of methane in landfill covers as a technology for reducing greenhouse gas emissions from landfills, particularly those located in the boreal climatic zone. First, methane oxidation was studied in laboratory batch assays in a landfill cover soil consisting of a composted mixture of sewage sludge and chemical sludge which had been installed on the landfill surface 4-5 years earlier. Second, methane oxidation was studied using mechanically-biologically treated municipal solid waste (MBT residual) as a material for methane-oxidizing landfill covers both in continuously methane-sparged laboratory columns and in an outdoor pilot lysimeter. Finally, meth…
Comparison of powering the microbial fuel cell with various kinds of wastewater
2019
The possibility to combine wastewater treatment and electricity production can accomplish a microbial fuel cell. Microbial fuel cells use glucose from wastewater as a fuel. In recent years, both production of municipal and industry wastewater increases very much. Municipal wastewater is directed to the wastewater treatment plant. While industry wastewater can be use as a fertilizer. But, both municipal and industry wastewater can be used in the microbial fuel cells. The comparison of powering the microbial fuel cell with municipal and process wastewater from yeast production is presented in this paper. The measurements covered comparison of changes in the concentration of COD in the reactor…