Waste Treatment and Sustainable Technologies

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

Deadline for manuscript submissions: 20 January 2025 | Viewed by 2850

Special Issue Editors


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Guest Editor
Department of Chemical Engineering Technology, University of Johannesburg, P.O. Box 524, Auckland Park, Johannesburg 2006, South Africa
Interests: bioresource and bioprocess engineering; water science; technology and engineering; biotechnology engineering; green chemistry; waste management

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Guest Editor
Bioresource Engineering Research Group (BioERG), Cape Peninsula University of Technology, P.O. Box 652, Cape Town 8000, South Africa
Interests: waste treatment; food technology; waste management; biotechnology; bioprocessing; environmental protection; fermentation technology; biocontrol
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Special Issue Information

Dear Colleagues,

Industrialization has resulted in the generation of various wastes. There is a consensus on industries to mitigate waste generation and develop sustainable systems to handle such waste. Sustainable development goal 12 highlights the need for sound waste management “through prevention, reduction, recycling and reuse (targets 12.4 and 12.5) and reduction of food waste (target 12.3)”. The generation of waste and its disposal not only affects humans but the lives of other creatures and puts the planet we share in jeopardy, culminating in other outcomes such as climate change. Overall, it is desirable to evaluate the (de)efficiencies of current waste management systems and develop novel, sustainable technologies for waste management in the medium-term, refining them in the long-term to handle the ever-increasing quantity of waste being generated.

We are pleased to invite you to participate in this Special Issue on “Waste Treatment and Sustainable Technologies”. This Special Issue aims to highlight novel approaches to waste treatment and its management in the following broad areas: (1) agro/food-waste; (2) municipal-biosolid waste; and (3) waste from mining and metallurgical operations.

Dr. Seteno K. O. Ntwampe
Dr. Boredi Silas Chidi
Guest Editors

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Keywords

  • agro-waste processing
  • municipal biosolid treatment and applications
  • mining and metallurgical waste treatment and applications
  • reactor development for waste treatment
  • nutrient recovery and transformation to value added products
  • waste (pre)treatment technology
  • environmental pollution and protection
  • technology in waste management
  • smart waste management systems
  • sustainability
  • recycling

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Published Papers (1 paper)

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Research

12 pages, 3270 KiB  
Article
Anaerobic Co-Digestion of Food Waste and Microalgae at Variable Mixing Ratios: Enhanced Performance, Kinetic Analysis, and Microbial Community Dynamics Investigation
by Zhiyong Pan, Xuan Sun, Yali Huang, Tian Liang, Jilai Lu, Limin Zhang and Chuang Qi
Appl. Sci. 2024, 14(11), 4387; https://doi.org/10.3390/app14114387 - 22 May 2024
Viewed by 630
Abstract
There is an urgent need for clean recycling strategies to address the increase in food waste (FW) and the harvesting of microalgae (MA). In this study, biogas production potential and operational stability were evaluated by testing combinations of FW and MA mixed at [...] Read more.
There is an urgent need for clean recycling strategies to address the increase in food waste (FW) and the harvesting of microalgae (MA). In this study, biogas production potential and operational stability were evaluated by testing combinations of FW and MA mixed at five different ratios. Co-digestion of FW and MA improved substrate biodegradability, achieving a decomposition rate of 0.45/d (FW/MA = 1:1), which is 1.25 to 1.55 times higher than that of MA or FW alone. Co-digestion of FW and MA resulted in a synergistic effect, improving biogas yield by 2.04–26.86%. Four mathematical models were applied to estimate biological degradation and biogas production kinetics, and the Cone model performed better than the other models in terms of reliability and accuracy. The abundance of Bacteroidetes, Firmicutes, and Synergistetes peaked at FW/MA = 1:1. At the same ratio, the genera Methanospirillum, Methanocorpusculum, and Methanomethylovorans were also found to have increased in abundance. The optimal ratio was found to be 1:1 for co-digestion of FW and MA, which is a feasible approach for simultaneous bioenergy production and biomass waste co-disposal. Full article
(This article belongs to the Special Issue Waste Treatment and Sustainable Technologies)
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