Published January 2023 | Version v1
Journal article Metadata-only

Textile wastewater treatment in anaerobic reactor: Influence of domestic wastewater as co-substrate in color and COD removal

Creators

  • 1. Department of Mechanical and Industrial Engineering, University of Dar es Salaam, P.O Box 35131, Dar es Salaam (Tanzania, United Republic of)
  • 2. School of Materials Energy Water and Environmental Sciences, Nelson Mandela African Institution of Science and Technology, Arusha (Tanzania, United Republic of)
  • 3. Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven (Belgium)
  • 4. School of Materials Energy Water and Environmental Sciences, Nelson Mandela African Institution of Science and Technology, P.O. Box 447 Arusha (Tanzania, United Republic of)
  • 5. Faculty of Engineering and the Built Environment, Tshwane University of Technology, Private Bag X680, Pretoria 0001 (South Africa)

Description

Treatment of textile wastewater with domestic wastewater as co-substrate was investigated in this study. Combined textile and domestic wastewater at different mixing ratios (100:0, 80:20, 60:40) was treated under anaerobic reactor. The influence of residence time, textile wastewater fraction and initial pH were determined in view of COD and color removal. Response Surface methodology (RSM) with Box–Behnken design (BBD) was employed to determine conditions for higher simultaneous removal of COD and color. The highest simultaneous removal of COD and color were satisfied at initial pH of 8.6, residence time of 9 days while textile and domestic wastewater ratio was 77:23. The highest removal efficiencies realized were 70% and 72% for color and COD respectively. In general, longer residence time and higher initial pH favored higher simultaneous removal of COD and color. Furthermore, textile wastewater fraction in range of 0.65 – 0.8 favored simultaneously high COD and color removal. Therefore, co-digestion of textile and domestic wastewater at specific ratio is a novel finding that can be further developed for treating textile wastewaters. Moreover, this technology is a promising approach to enhance biological treatment of textile wastewater. (author)

Availability note (English)

Available on-line: https://doi.org/10.1016/j.sajce.2022.10.007

Additional details

Identifiers

URL
http://creativecommons.org/licenses/by-nc-nd/4.0/;
DOI
10.1016/j.sajce.2022.10.007;

Publishing Information

Journal Title
South African Journal of Chemical Engineering
Journal Volume
43
Journal Page Range
p. 112-121
ISSN
1026-9185

INIS

Country of Publication
South Africa
Country of Input or Organization
South Africa
INIS RN
54084429
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
DESIGN; MIXING RATIO; PH VALUE; SUBSTRATES; SURFACES; WASTE WATER; WATER TREATMENT
Descriptors DEC
DIMENSIONLESS NUMBERS; HYDROGEN COMPOUNDS; LIQUID WASTES; OXYGEN COMPOUNDS; WASTES; WATER

Optional Information

Notes
Refs., 8 figs., 7 tabs.; The Author(s). Published by Elsevier B.V. on behalf of Institution of Chemical Engineers. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)