Water Reuse and Recycling

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 461

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Guest Editor
Department of Chemistry, University of Texas at El Paso, El Paso, TX 79968, USA
Interests: environmental monitoring; produced water analysis; point source attribution
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Special Issue Information

Dear Colleagues,

This Special Issue covers a robust set of topics including the biogeochemical characterization of produced water and other brine solutions, as well as application treatment techniques and opportunities for waste valorization. In particular, this issue will feature novel technological advancements that have been developed to extract precious metals, nitrogen-bearing compounds, and commercially relevant hydrocarbons from complex waste streams. This Special Issue will also feature technoeconomical and geopolitical analyses to illustrate the opportunities for water reuse and recycling in various applicable international jurisdictions.

Prof. Dr. Zacariah Hildenbrand
Guest Editor

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Keywords

  • water management
  • produced water
  • water reuse
  • water recycling
  • wastewater treatment methods
  • wastewater treatment

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Published Papers (1 paper)

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Research

16 pages, 1913 KiB  
Article
Acidogenic Fermentation of Cassava Wastewater: Effect of the Substrate-to-Microorganism Ratio and Temperature on Volatile Fatty Acids Production
by Lina Marcela Sanchez-Ledesma, Jenny Alexandra Rodríguez-Victoria and Howard Ramírez-Malule
Water 2024, 16(23), 3344; https://doi.org/10.3390/w16233344 - 21 Nov 2024
Viewed by 241
Abstract
The production of volatile fatty acids (VFAs) through the acidogenic fermentation of wastewater is an emerging technology that requires further research to optimize operational variables for specific substrates. Cassava wastewater, which is a byproduct of the cassava sour starch extraction process, has been [...] Read more.
The production of volatile fatty acids (VFAs) through the acidogenic fermentation of wastewater is an emerging technology that requires further research to optimize operational variables for specific substrates. Cassava wastewater, which is a byproduct of the cassava sour starch extraction process, has been minimally studied regarding its potential for VFA production through acidogenic fermentation. Batch reactors were used to evaluate the effects of the substrate-to-microorganism (S/M) ratio and temperature on VFA production from cassava wastewater. The results showed no statistically significant differences between the evaluated S/M ratios. The maximum total VFA concentration observed was 2214.64 mg of acetic acid (HAc)/L (0.32 gCODVFA/gCOD), which was achieved at a S/M ratio of 4 gCOD/gVS. This concentration was predominantly composed of acetic acid (42.7%), followed by butyric acid (30.1%) and propionic acid (24.6%), with a minor quantity of isovaleric acid (2.6%). The statistical analysis for the temperature variable showed significant differences between the evaluated conditions. The maximum concentration of total VFAs was 2650.19 mgHAc/L (0.45 gCODVFA/gCOD) at 34 ± 1 °C, with acetic (40.9%), butyric (29.8%), and propionic (29.3%) acids as primary metabolites. Cassava wastewater shows promise as a potential substrate for VFA production, warranting evaluation in continuous reactors. Full article
(This article belongs to the Special Issue Water Reuse and Recycling)
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