Concentrate Management and Resource Recovery for Sustainable Future

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (31 March 2019) | Viewed by 13291

Special Issue Editors


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Guest Editor
1. School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
2. Water: Effective Technologies and Tools (WETT) Research Centre, RMIT University, Melbourne, VIC 3000, Australia
Interests: water (treatment, distribution, modeling); wastewater (MBR, membranes in agriculture, aquaculture); saltwater intrusion; resource recovery (mine tailing ponds, dye and salt from textile effluent); novel technologies (forward osmosis, membrane distillation)
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1. LJS Environment, Parkville, VIC 3052, Australia
2. School of Engineering, Edith Cowan University, Joondalup, WA 6027, Australia
Interests: water and wastewater (treatment, membrane bioreactor, recirculating aquaculture systems, application of membranes in agriculture); resource recovery (metal recovery from RO concentrate, mine tailing ponds, recovery of dye and salt from textile effluent); novel technology (nanotechnology, forward osmosis, membrane distillation)
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Stategic Water Infrastructure Lab, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
Interests: membrane; biological; enzymatic and adsorption technologies for wastewater treatment/reuse; energy/resource recovery from wastewater/biosolids
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Guest Editor
College of Environment and Safety Engineering, Qingdao University of Science and Technology (QUST), Qingdao 266042, China
Interests: membrane process; electrodialysis; wastewater valorization; water and salt transport; process integration; functional membrane
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Special Issue Information

Dear Colleagues,

The abundance of raw natural resources will obviously come to an end, and the only way to sustain their availability for the foreseeable future is to recover them from various waste streams from now on.  This exercise should become mandatory through policies and practices. One of the best places to start resource recovery is with concentrates emanating from many processes. Energy recovery can also be considered as useful resource recovery process. Resource recovery will lead to zero discharge of wastes from anthropogenic activities and will help to close the loops created by human activities. This will bring natural processes that are taking place in the environment, since pre-human developments, to the forefront once again. This call for papers invites researchers who are working on the above to submit original research papers, critical review articles, case studies and technical notes on the following themes:

  • Concentrate management
  • Resource recovery from
    • Seawater reverse osmosis concentrate
    • Brackish water reverse osmosis concentrate
    • Process effluents from chemical industries
    • Landfill leachate
    • Process effluents from other biological waste streams
    • Mine tailing ponds
    • Other relevant waste streams
    • Energy recovery
  • Zero liquid discharge

Authors are requested to provide clear evidence or potential on how their work will contribute to water sustainability in their manuscripts.

Prof. Dr. Jega Jegatheesan
Dr. Li Shu
Assoc. Prof. Faisal I Hai
Prof. Yang Zhang
Guest Editors

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Keywords

  • Resource recovery
  • Concentrate management
  • Zero liquid discharge
  • Mine tailing ponds
  • Landfill leachate
  • Biological processes
  • Ion exchange
  • Bio-based products
  • Energy recovery

Published Papers (2 papers)

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Research

15 pages, 772 KiB  
Article
The Potential of Iron Ore Tailings as Secondary Deposits of Rare Earths
by Henar Moran-Palacios, Francisco Ortega-Fernandez, Raquel Lopez-Castaño and Jose V. Alvarez-Cabal
Appl. Sci. 2019, 9(14), 2913; https://doi.org/10.3390/app9142913 - 21 Jul 2019
Cited by 12 | Viewed by 5458
Abstract
Rare earths have appeared in the market with new energy and Information Technology and Communications (ITC) applications. While their demand grows exponentially, their production is experiencing a bottleneck given that their deposits are concentrated in very few locations, mainly in China. This scarcity [...] Read more.
Rare earths have appeared in the market with new energy and Information Technology and Communications (ITC) applications. While their demand grows exponentially, their production is experiencing a bottleneck given that their deposits are concentrated in very few locations, mainly in China. This scarcity and dependence have turned them into strategic minerals, and the location of new sources has become vital. On the other hand, the inevitable trend towards sustainability favors the reuse of waste to avoid the degradation of new areas and the need for waste storage. One of the biggest generators of waste is iron mining. The tailings are stored in huge ponds with consequent environmental problems and risks. As tailings come from a concentration process, they incorporate different amounts of rare earths depending on their separation behavior. To evaluate the viability of these resources as potential repositories of rare earths, samples of different types of deposits and treatments were selected. The presence of different rare earths in them was determined through spectroscopy techniques to evaluate their use as a deposit. The results show an increase in the concentration of rare earths, especially high-density ones, which, although currently not economically feasible given the very wide geographical distribution of iron mining, represent a fundamental strategic reserve. Full article
(This article belongs to the Special Issue Concentrate Management and Resource Recovery for Sustainable Future)
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8 pages, 954 KiB  
Article
Ethanol Production from Waste of Cassava Processing
by Daiana G. Martinez, Armin Feiden, Reinaldo Bariccatti and Katya Regina De Freitas Zara
Appl. Sci. 2018, 8(11), 2158; https://doi.org/10.3390/app8112158 - 05 Nov 2018
Cited by 20 | Viewed by 7252
Abstract
Cassava processing produces by-products such as brown bark, between bark, disposal, bran, fiber and bagasse. Cassava bagasse is characterized as a source of starch that can be converted into sugars to obtain biofuels. The objective of this work was to produce ethanol from [...] Read more.
Cassava processing produces by-products such as brown bark, between bark, disposal, bran, fiber and bagasse. Cassava bagasse is characterized as a source of starch that can be converted into sugars to obtain biofuels. The objective of this work was to produce ethanol from this cassava processing residue and to evaluate its contribution potential in the Brazilian energy matrix. Cassava processing residues were obtained from four different starch manufacturers in Brazil. Analysis of the chemical compositions of these samples provided the content of starch, sugar, crude grease, moisture, ash and also their pH values. For the ethanol process, the samples were submitted to enzymatic hydrolysis using the alpha-amylase and amyloglucosidases enzymes, followed by fermentation and distillation. The samples showed high starch indices, approximately 64% on average. The average yield of ethanol obtained was 30% after treatment of the sample like this. Considering the estimated volume of cassava bagasse in Brazil, it is possible to produce an average of 789 million cubic meters per bagasse, replacing about 24% of the first generation ethanol. Cassava bagasse can be considered an interesting biomass for the production of biofuels, contributing to the expansion of the energy matrix. Full article
(This article belongs to the Special Issue Concentrate Management and Resource Recovery for Sustainable Future)
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