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Advances in Food and Textile Industry Wastewater Treatment

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

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 10190

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Special Issue Editors

Dr. Md. Nahid Pervez

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Guest Editor

Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II #132, 84084 Fisciano, SA, Italy
Interests: wastewater treatment/resource recovery; electrospinning; sustainable textiles; process modelling

Prof. Dr. Yingjie Cai

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Guest Editor

Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan 430200, China
Interests: cleaner production of textile; textile functionalization; wastewater treatment

Special Issue Information

Dear Colleagues,

Food and textile industries are both important in terms of their role in sustainable development economics and considering the basic needs of human society. As a common matter, water is an essential substance for both industries' processing steps. In the process of food production, about more than 66% of freshwater is consumed, while textile production requires 93 billion cubic meters of water annually. However, the large amount of wastewater generated from both industries has recently been a significant concern. The wastewater produced by the food and textile industries often comprises a variety of dyes, bacteria, fats, and oils, in addition to various forms of organic and inorganic contaminants. In such cases, it is important to treat these wastewater effluents effectively before being discharged into the environment since this causes a negative influence on human health and the ecosystem. As of today, several advanced technologies have been recorded for the treatment of food and textile industries’ wastewater treatment. Therefore, this Special Issue focuses on the use of sustainable advanced technologies for food and textile industries' wastewater treatment and their future prospects.

Dr. Md. Nahid Pervez
Prof. Dr. Yingjie Cai
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

food wastewater
textile wastewater
sustainability
circular economy
remediation technologies

Published Papers (4 papers)

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Research

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11 pages, 1903 KiB

Open AccessArticle

Oxidation of an Azo-Dye via the Photo-Fenton Process under Heterogeneous and Homogeneous Conditions

by Abel Riaza-Frutos, Agata Egea-Corbacho, Manuel A. Manzano and José María Quiroga

Water 2023, 15(9), 1787; https://doi.org/10.3390/w15091787 - 6 May 2023

Viewed by 1219

Abstract

In today’s industries, a diversity of processes give rise to increasing numbers of non-biodegradable compounds that need to be degraded totally or transformed to other less toxic and/or more biodegradable compounds, before their discharge into the environment. One such compound chosen for this study is Orange II, a representative azo-dye that is widely used and easy to monitor in its degradation. The photo-Fenton process was used under heterogeneous and homogeneous conditions to study several different variables. At the end of this research, a comparative study was carried out between the two types of catalysis. It was observed that better results in primary degradation and mineralization were provided by homogeneous catalysis. The photo-Fenton process takes place effectively under heterogeneous and homogeneous catalysis conditions. The process is much faster under homogeneous conditions than under heterogeneous conditions (99.9 and 24% after 90 min, respectively, especially when only 2 ppm of iron in solution is required). Mineralization was observed through total organic carbon, through the variable C/Co as a function of time during photo-Fenton and Orange II degradation, and the data obtained for the final oxidation capacity are in agreement with the experimental percentages of mineralization. A linear fit was observed using the Chan–Chu kinetic model for heterogeneous and homogeneous catalysis. For heterogeneous catalysis, 56% mineralization was reached whereas the model predicts 63%. Regarding homogeneous catalysis, according to the model, 100% mineralization is reached because (1/σ) takes a value greater than 1 since the model calculates it on infinite time. Full article

(This article belongs to the Special Issue Advances in Food and Textile Industry Wastewater Treatment)

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18 pages, 16760 KiB

Open AccessArticle

Municipal Sewage Treatment Technology: A²/O-VMBR Integrated Technology for Municipal Treatment and Improved Pollutant Removal

by Qian Ma, Fengze Han, Feng Lyu and Xiaojun Yang

Water 2023, 15(8), 1574; https://doi.org/10.3390/w15081574 - 18 Apr 2023

Viewed by 1702

Abstract

To modernize wastewater treatment plants, a pilot-scale anaerobic/anoxic/oxic-vibrating membrane bioreactor (A²/O-VMBR) was developed and successfully operated. Despite a low C/N ratio, the A²/O-VMBR achieved removal rates of 61.10%, 93.77%, 72.86%, and 54.75% for COD, TN, TP, and NH₃-N, respectively. The maximum and extremity transmembrane pressures were 45 kPa, and 80 kPa, respectively, with no sludge bulking observed. The VMBR saved over 96–98% of energy compared to traditional MBR plants, making it a better option for municipal wastewater treatment. High-throughput sequencing analysis revealed identical bacterial population structures in samples obtained from the treatment units, with genera having nitrifying, denitrifying, hydrolyzing, and glycogen-accumulating activities, which allowed for nitrogen removal. The key functional microorganisms responsible for nitrification–denitrification were species belonging to the genera FCPU426, Fusobacteria, Planctomycetes, Verrucomicrobia, and Epsilonbacteraeota. The integrated experimental system produced favorable results in improving wastewater quality, highlighting the usability of the A²/O-VMBR technology. Therefore, this technique holds potential for further investigation into the context of wastewater treatment and recovery. Full article

(This article belongs to the Special Issue Advances in Food and Textile Industry Wastewater Treatment)

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18 pages, 2857 KiB

Open AccessArticle

Synthesis, Characterization and Performance Evaluation of Burmese Grape (Baccaurea ramiflora) Seed Biochar for Sustainable Wastewater Treatment

by Hridoy Roy, Dipayan Sarkar, Md. Nahid Pervez, Shuvo Paul, Yingjie Cai, Vincenzo Naddeo, Shakhawat H. Firoz and Md. Shahinoor Islam

Water 2023, 15(3), 394; https://doi.org/10.3390/w15030394 - 18 Jan 2023

Cited by 7 | Viewed by 3536

Abstract

Biochar prepared from different bio-sources serves as a feasible solution for the decontamination of dye-contaminated wastewater. In this study, biochar was synthesized from a sustainable source, i.e., local fruit waste, Burmese grape seeds (BGSs). The seeds were collected from a local market, washed, pre-teated and finally converted into biochar by pyrolysis in a N₂ furnace. The removal efficiency of the synthesized biochar was evaluated towards a cationic industrial azo dye, methylene blue (MB). The phosphoric acid (H₃PO₄) and potassium hydroxide (KOH) pretreated BGS were pyrolized at 500 °C for 3 h in a N₂ furnace at a heating rate of 10 °C/min. The spectroscopic analysis confirmed the presence of multiple surface functional groups, e.g., R-OH, OH, -C=O, -COOH, etc. The surface of the biochar was randomized with porous tunnel-like structures. The specific surface area and pore volume obtained from BET analysis were 19.90 ± 1.20 m²/g and 5.85 cm³/g. The MB concentration (mg/L), contact duration (min) and pH were varied to assess the MB sorption phenomena. The optimum pH was found to be 8. During the first 20 min of contact time, adsorption was rapid and equilibrium was reached after 75 min. The adsorption was best described by pseudo-first-order kinetics with a good fit (R² = 0.99). The maximum removal percentage was ~85%, and per gram of BGS can adsorb 166.30 mg of MB, which supports the Langmuir adsorption isotherm model. The obtained results were compared with the reported literature, and BGS showed its excellent candidacy to be industrially utilized in the tertiary stage of wastewater treatment plants. Full article

(This article belongs to the Special Issue Advances in Food and Textile Industry Wastewater Treatment)

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Other

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16 pages, 2265 KiB

Open AccessCase Report

Sludge Management in the Textile Industries of Bangladesh: An Industrial Survey of the Impact of the 2015 Standards and Guidelines

by Md. Badal Miah, Md. Sazzadul Haque, Md. Abdul Khaleque and Rafael M. Santos

Water 2023, 15(10), 1901; https://doi.org/10.3390/w15101901 - 17 May 2023

Cited by 2 | Viewed by 3117

Abstract

The textile sector of Bangladesh has positively contributed to a significant impact on its national economy and employment opportunities due to its rapid growth. The increasing number of wet processing units has led to a growing amount of wastewater volume as well as textile sludge (a byproduct of wastewater or effluent treatment plants). In 2015, the government of Bangladesh instituted the “Bangladesh Standards and Guidelines for Sludge Management”. Therefore, this case study aimed to assess these standards’ impact on the textile industry’s sludge management practices, informing academic scholars of the research opportunities available, and serving as a policymaking tool for various other South Asia and Southeast Asia economies. The sludge management situation of thirty-six industries (namely, twelve dyeing, twelve printing, and twelve washing) was herein assessed through a self-administered questionnaire survey of respondents from the respective ‘Top Management’ and ‘Environmental Chemical Responsible’ (ECR) departments. Among the findings, the assessment revealed that neither treatment procedures nor reuse and recycling activities are present for sludge management in any of the studied industries. The responsible personnel from the textile industries have not undergone any level of technical training, and 41.7% of the printing industries still dump sludge in the open environment. The majority (83%) of stakeholders are unaware of the dangers and potential effects of improper sludge treatment. The key factors—responsibility, knowledge, behavior, and consideration—analyzed in this study, together with the study’s recommendations, will be a vital step forward in formulating policy advocacy for hazardous sludge management within the textile sector of Bangladesh. Full article

(This article belongs to the Special Issue Advances in Food and Textile Industry Wastewater Treatment)

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