A Comprehensive Review on the Biofilm‐Mediated Removal of Nitrogen and Chemical Oxygen Demand From Different Wastewater Sources DOI Open Access

Modhurima Misra,

Pranati Das,

Anshita Mehra

et al.

CLEAN - Soil Air Water, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 7, 2024

ABSTRACT Discharging effluents with high chemical oxygen demand (COD) and nitrogen content into the environment threatens human aquatic life. An increase in load results depletion of dissolved (DO), eutrophication, ecological stress, biodiversity loss. Intake water containing excess nitrate can cause different diseases. Conventional physicochemical removal techniques are expensive also generate secondary pollutants. In contrast, biological methods offer effective economical outcomes global acceptance. Biofilm‐based have advantages low space requirement, resistance toward toxic shocks, absence sludge backflow. The carriers used biofilm reactors allow growth heterogeneous microbial consortia, which simultaneously remove COD, nitrogenous compounds, phosphates. This review aims to summarize individual lab‐scale research this area, critically analyze scientific findings, understand gap. nitrification–denitrification anammox often been replaced by more efficient approaches such as simultaneous nitrification–denitrification, partial nitritation anammox, nitrification, denitrification. Multistage moving bed specially designed step feeding for complete removal. Through a sequencing batch reactor, rate denitrification could be obtained, whereas using membrane bioreactor resulted almost nitrogen. We expect that will provide direction designing experiments on enhanced COD from wastewater sources biofilms.

Language: Английский

Bioelectrochemical systems – A potentially effective technology for mitigating microplastic contamination in wastewater DOI
Hui Wang, Qixing Zhou

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 450, P. 141931 - 141931

Published: March 25, 2024

Language: Английский

Citations

21
Separation and degradation techniques for microplastics in soil environments DOI
Yifan Xu,

Panting Zhang,

Rui Zhang

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107302 - 107302

Published: Feb. 26, 2025

Language: Английский

Citations

1
Are (bio)electrochemical techniques sustainable solutions to combat micro- and nano-plastic pollution? DOI
Almeenu Rasheed, Yasser Bashir, Sovik Das

et al.

Current Opinion in Chemical Engineering, Journal Year: 2025, Volume and Issue: 47, P. 101091 - 101091

Published: Jan. 20, 2025

Language: Английский

Citations

0
Optimized electrochemical treatment of semi-coking wastewater for enhanced degradation of biological toxicity using a Ru-Ir-Ti anode and Co-Ti cathode DOI Creative Commons
Ting Su, Mengdan Wang, Kui Wang

et al.

International Journal of Electrochemical Science, Journal Year: 2024, Volume and Issue: 19(9), P. 100718 - 100718

Published: July 11, 2024

The Co-Ti cathode was prepared to reduce the biological toxicity of semi-coke wastewater by electrochemical system with commercial ruthenium-iridium titanium (Ru-Ir-Ti) anode. Meanwhile, removal rate chemical oxygen demand (COD), volatile phenol (VP) and ammonia nitrogen (NH3-N) in were also evaluated. Hence, influence processing time (A), dilution multiple (B), initial pH (C), electrolyte concentration (D) current density systematic explored. After treatment, optimized experiment condition (150 min), (300 times), (3.2), (0.15 mol/L), (16 mV/cm2), B/C value greatly improved from 0.12 0.31, COD, NH3-N VP 96.82 %, 92.34 % 97.07 respectively. sequence significance B>D>E*E>B*D>A*D>D*D. This most effective degradation owing simultaneously oxidization both anode, turning highly toxic biodegradable one. direct oxidation reaction happened on furthermore, indirect would be accelerated near because active free radicals generation such as ·OH O2•– when cobalt's valence changed +2 +3. It deserve mentioned this research is that contributed toxicity, which great beneficial for further bio-chemical processing.

Language: Английский

Citations

3
Pressure-Driven Membrane Processes for Removing Microplastics DOI Creative Commons
Priscila Natália Pinto, Alexandre Giacobbo, Gabriel Luz Almeida

et al.

Membranes, Journal Year: 2025, Volume and Issue: 15(3), P. 81 - 81

Published: March 5, 2025

The intense consumption of polymeric materials combined with poor waste management results in the dissemination their fragments environment as micro- and nanoplastics. They are easily dispersed stormwater, wastewater, landfill leachate carried towards rivers, lakes, oceans, causing contamination. In aqueous matrices, use membrane separation processes has stood out for efficiency removing these particulate contaminants, achieving removals up to 100%. For this review article, we researched removal microplastics nanoplastics by whose driving force is pressure gradient. analysis focuses on challenges found operation microfiltration, ultrafiltration, nanofiltration, reverse-osmosis systems, well innovations applied membranes, comparisons treatment systems peculiarities each system matrix. We also point weaknesses opportunities future studies so that techniques, known be capable many other contaminants emerging concern, can subsequently widely

Language: Английский

Citations

0
Life Cycle and Techno‐Economic Assessment of Microplastics Remediation Technologies and Policies DOI
Almeenu Rasheed, Divyanshu Sikarwar, Sovik Das

et al.

Published: April 4, 2025

Language: Английский

Citations

0
Recycle or Not? An Exploration of Microplastic Generation During Plastic Processing via a Local Case Study DOI
Wei Fan,

E.T. Wei,

Yuan Chen

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Microplastic (MP), an emerging pollutant, has been identified as a critical target in tackling plastic pollution. Although plethora of studies have explored MP generation from various sources, limited attention paid to processing. This study investigated (10 μm–5 mm) virgin and waste extrusion MPs at density 2.13 × 105–9.79 107 (approximately 0.01–10.85 g) were generated when processing 1 t plastic. Feedstock polymer types, pelletizing techniques found influence the process. With moderate weight (270.58–527.34 t) but enormous amount (1.34 1016–2.63 1016) globally 2022, is underestimated vital source MPs, emphasizing need for inspection appropriate removal technologies industry, especially water ring pelletizing. Further simulation indicated that up 84.35% could be removed using commonly available materials facility, with higher efficiency larger-sized particles. In this regard, recycling was superior fewer generated, which facilitate should fostered.

Language: Английский

Citations

2
Electrochemical removal of hydrogen sulfide and recovery of the deposited sulfur on the anode from wastewater DOI
Riying Qi, Yanqiu Yang,

Kuichuan Sheng

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114426 - 114426

Published: Oct. 16, 2024

Language: Английский

Citations

1
A Comprehensive Review on the Biofilm‐Mediated Removal of Nitrogen and Chemical Oxygen Demand From Different Wastewater Sources DOI Open Access

Modhurima Misra,

Pranati Das,

Anshita Mehra

et al.

CLEAN - Soil Air Water, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 7, 2024

ABSTRACT Discharging effluents with high chemical oxygen demand (COD) and nitrogen content into the environment threatens human aquatic life. An increase in load results depletion of dissolved (DO), eutrophication, ecological stress, biodiversity loss. Intake water containing excess nitrate can cause different diseases. Conventional physicochemical removal techniques are expensive also generate secondary pollutants. In contrast, biological methods offer effective economical outcomes global acceptance. Biofilm‐based have advantages low space requirement, resistance toward toxic shocks, absence sludge backflow. The carriers used biofilm reactors allow growth heterogeneous microbial consortia, which simultaneously remove COD, nitrogenous compounds, phosphates. This review aims to summarize individual lab‐scale research this area, critically analyze scientific findings, understand gap. nitrification–denitrification anammox often been replaced by more efficient approaches such as simultaneous nitrification–denitrification, partial nitritation anammox, nitrification, denitrification. Multistage moving bed specially designed step feeding for complete removal. Through a sequencing batch reactor, rate denitrification could be obtained, whereas using membrane bioreactor resulted almost nitrogen. We expect that will provide direction designing experiments on enhanced COD from wastewater sources biofilms.

Language: Английский

Citations

0