Anamika Yadav, Dipak A. Jadhav, Makarand M. Ghangrekar et al.

Environmental Science and Pollution Research • 2021

S.M. Sathe, Gourav Dhar Bhowmick, Brajesh Dubey et al.

Bioprocess and Biosystems Engineering • 2020

Sumaya Sarmin, Mostafa Tarek, Chin Kui Cheng et al.

Journal of Hazardous Materials • 2021

Ahmed Y. Radeef, Zainab Z. Ismail

Journal of Electroanalytical Chemistry • 2019

S. Sanjay, T H Udayashankara

Materials Today Proceedings • 2020

Ana Carla Sorgato, Thamires Custódio Jeremias, Fernanda Leite Lobo et al.

Environmental Research • 2023

Tanveer Saeed, Asheesh Kumar Yadav, Md Jihad Miah

Journal of Water Process Engineering • 2022

Jiseon You, John Greenman, Ioannis Ieropoulos

Sustainable Energy Technologies and Assessments • 2021

In line with the global movement towards sustainable buildings and dwellings, this work investigated the potential for integrating microbial fuel cell technology into future architecture. Various types of domestic greywater and wastewater from five different sources (bathroom, kitchen sink, dishwasher, laundry washing machine and urinal) were tested as feedstock in otherwise identical MFCs. In terms of power output, urine outperformed other feedstock types by producing a maximum power of 3.91 ± 0.27 mW (97.8 ± 6.8 W m−3). The urine-fed MFCs showed a COD removal rate of 38.9 ± 1.1% and coulombic efficiency of 15.1 ± 3.4%. When urine was diluted with either bathwater or tap water, which represents a realistic scenario where flushing toilets are installed, results showed that MFC power output decreased with increasing dilutions. Interestingly, when commercial bleach was added in full concentration, although the level of instantaneous power dropped, performance recovered to the previous levels within 48 h after this was replaced with fresh urine. This suggests that the MFC systems are fairly robust and can be resistant to short-term domestic chemical exposure. These novel findings provide a stepping-stone to more sustainable future buildings and cities with fully integreated MFC technology.

Heinz Hiegemann, Manfred Lübken, Patrick Schulte et al.

The Science of The Total Environment • 2017

Shuai Zhao, Hui Yun, Aman Khan et al.

Environmental Research • 2021

Arulazhagan Pugazhendi, Ghada Ghazi Alreeshi, Mamdoh T. Jamal et al.

Environmental Technology & Innovation • 2020

Meixue Dai, Yexuan Li, Pengfei Li et al.

International Biodeterioration & Biodegradation • 2020

Mehdi Sedighi, Saad A. Aljlil, Mohammed D. Alsubei et al.

Alexandria Engineering Journal • 2018

In this study, response surface methodology (RSM), coupled with central composite design (CCD), are applied to optimise the performance of a microbial fuel cell (MFC) as a function of three main factors of commercialisation. Pt, as the main obstacle for commercialisation in the range of 0.1–0.5 mg/cm2, degree of sulphonation in SPEEK, as a new proton exchange membrane in the range of 20–80%, and rate of aeration of cathode between 10 and 150 ml/min were optimised to identify a more commercial MFC. The single maximum response of power density and COD removal and simultaneous maximisation of both responses were obtained at the corresponding optimal independent variables. The results show that the optimised condition for power density and COD removal is at DS 68% and aeration of 121.62 ml/min. However, the pt load differs and is 0.42 mg/cm2 for produced power density and 0.28 mg/cm2 for COD removal. The maximum produced power density in the optimised situation was 58.19 mW/m2 while the maximum COD removal in the optimised condition was 94.8%. However, once we optimised both at the same time i.e., the power generation and COD removal, the degree of sulphonation (DS) was 68%, Pt load was 0.35 mg/cm2 and the aeration rate was 121.62 ml/min, which resulted in a power production of about 57.06 mW/m2 and COD removal of 92.7%.

Sing-Mei Tan, Soon‐An Ong, Li‐Ngee Ho et al.

Journal of Environmental Health Science and Engineering • 2020

Chuanfu Zhao, Dong Wei, Dawei Fan et al.

Bioresource Technology • 2021

Tao Lyu, Yuncheng Wu, Yang Zhang et al.

The Science of The Total Environment • 2023

Artificial aeration is a widely used approach in wastewater treatment to enhance the removal of pollutants, however, traditional aeration techniques have been challenging due to the low oxygen transfer rate (OTR). Nanobubble aeration has emerged as a promising technology that utilise nano-scale bubbles to achieve higher OTRs owing to their large surface area and unique properties such as longevity and reactive oxygen species generation. This study, for the first time, investigated the feasibility of coupling nanobubble technology with constructed wetlands (CWs) for treating livestock wastewater. The results demonstrated that nanobubble-aerated CWs achieved significantly higher removal efficiencies of total organic carbon (TOC) and ammonia (NH 4 + -N), at 49 % and 65 %, respectively, compared to traditional aeration treatment (36 % and 48 %) and the control group (27 % and 22 %). The enhanced performance of the nanobubble-aerated CWs can be attributed to the nearly three times higher amount of nanobubbles (Ø < 1 μm) generated from the nanobubble pump (3.68 × 10 8 particles/mL) compared to the normal aeration pump. Moreover, the microbial fuel cells (MFCs) embedded in the nanobubble-aerated CWs harvested 5.5 times higher electricity energy (29 mW/m 2 ) compared to the other groups. The results suggested that nanobubble technology has the potential to trigger the innovation of CWs by enhancing their capacity for water treatment and energy recovery. Further research needs are proposed to optimise the generation of nanobubbles, allowing them to be effectively coupled with different technologies for engineering implementation.

Tao Li, Yun Cai, Xiao-Li Yang et al.

Journal of Environmental Engineering • 2019

Economic development and the related increase in global energy demands have created pressure on the supply of energy resources. To promote sustainable development, a safe and renewable energy is required. For this, wastewater contributes significantly in creating a safe environment and renewable energy. Currently, in developing countries, with the scarcities of energy, an attractive wastewater treatment technology like membrane bioreactors (MBR), which produces high-quality recyclable treated water and energy, has been proposed. However, fouling of the membrane is the main drawback of the MBR process, as it leads to a decline in the permeate flux or increase in the transmembrane pressure (TMP) with processing time, resulting in higher operating costs for membrane cleaning and eventually decreases the lifespan of membranes. This situation invites researchers to develop integrated MBR technology intended for wastewater treatment alternatives under several scenarios. A related review shows that integration of a microfuel cell (MFC) with MBR as post-treatment in wastewater treatment technologies makes it possible to accomplish good quality and extract abundant energy obtained in wastewater and future trends like MFC-MBR. An MFC-MBR (microbial fuel cell–membrane bioreactor) integrated system makes it possible to achieve better effluent and harvest the energy contained in wastewater simultaneously with different factors like reactor integration, electricity generation, and membrane fouling, and it also highlights the probable challenge and future development of MFC-MBR integrated systems in the large scale.

Hadise Mehravanfar, Mahmood Akhavan Mahdavi, Reza Gheshlaghi

International Journal of Hydrogen Energy • 2019

Safwat M. Safwat

Polish Journal of Environmental Studies • 2018

Microbial fuel cells (MFCs) and electrocoagulation cells (ECCs) are two emerging technologies in the treatment of wastewater. The integration between MFCs and ECCs has not been reported yet. This work studied the ability to couple MFCs with an ECC to form an integrated system for wastewater treatment. Two types of wastewater were examined: synthetic wastewater containing a mixture of glucose and soluble starch, and real municipal wastewater. A series of MFCs could provide sufficient energy for the electrocoagulation process. The results showed that the removal efficiencies of COD, TDS, and TSS were 95.4%, 88.4%, and 93.8%, respectively, for synthetic wastewater, while these values were 83.7%, 57.5%, and 85.8%, respectively, for real wastewater. The energy harvested from the MFCs to ECCs when using synthetic wastewater was more than that harvested using real wastewater. The capital cost of the integrated system is high using MFCs and ECCs, but it will significantly reduce the operational cost compared to ECCs.

Mamdoh T. Jamal, Arulazhagan Pugazhendi

Journal of Environmental Management • 2021

Gourav Dhar Bhowmick, Sovik Das, Makarand M. Ghangrekar et al.

Journal of The Institution of Engineers (India) Series A • 2019

Shentan Liu, Dengfei Qiu, Feifan Lu et al.

Journal of environmental chemical engineering • 2022

Qi Feng, Longjun Xu, Chenglun Liu et al.

Journal of Cleaner Production • 2020

Edson Baltazar Estrada‐Arriaga, Jesús Hernández‐Romano, Liliana García‐Sánchez et al.

Journal of Environmental Management • 2018

Jun Zhou, Haonan Zhang, Tong Zuo et al.

Process Safety and Environmental Protection • 2021

Debajyoti Bose, Himanshi Dhawan, Vaibhaw Kandpal et al.

International Journal of Energy Research • 2018

In this study, sewage was simultaneously treated and used to produce electricity using a two-chambered microbial fuel cell (MFC) with carbon cloth electrodes having platinum coating on the cathode. Porous carbon electrodes are found to be the more suitable for MFCs as the power generation value is high when compared with nonporous surfaces and has a significant impact on the development of stable biofilms on the anode. Wastewater having an initial chemical oxygen demand (COD) of 830 ± 20 mg/L had a removal efficiency from the MFC of around 78%. The initial pH of sewage in the range of 7.69 ± 0.2 saw a shift towards neutral (around 7.4) and biochemical oxygen demand ranging from 300 ± 20 mg/L in the system decreased up to 175 ± 15 mg/L. The cell open circuit voltage peaked at 800 mV. Current and power density was calculated using an external resistance (of 250 Ω) followed by normalizing to the anode surface area. This bioelectricity generation is attributed to the decomposition of the organic matter and is reported to peak at 0.54 mA/m2 and 204 ± 0.38 mW/m2, respectively. Power generation has faster COD removal rates with external resistors compared with open circuit analysis, and MFCs can be effective to support the wastewater treatment infrastructure while at the same time generate electrical power as a value added product.

Janaína S. Santos, Mostafa Tarek, Mariana de Souza Sikora et al.

Journal of Power Sources • 2023

Zhengkai Tao, Zhao Jing, Mengni Tao et al.

Chemosphere • 2022

Zainab Z. Ismail, Ali A. Habeeb

Renewable Energy • 2016

Jaecheul Yu, Young-Hyun Park, Evy Widyaningsih et al.

The Science of The Total Environment • 2021

Afaf J. Obaid Al-saned, Baidaa A. Kitafa, Ali Sabri Badday

IOP Conference Series Materials Science and Engineering • 2021

Abstract Microbial Fuel Cells (MFC) appear to offer a feasible alternative to conventional wastewater treatment techniques; thus, constructing and testing MFCs for this purpose was accomplished in this research. The experiments were carried out in two stage; In first stage, synthetic dairy wastewater was used as substrate in an anode chamber using Saccharomyces cerevisiae at different pH values (5, 6, 7, and 8) and different operational temperatures (25, 30, 34 °C in order to evaluate the performance of MFC in term of COD reduction and electricity generation, while in the second stage, the MFC testing was conducted using real dairy wastewater with an initial concentration of COD equal to 2,610 mg/L, inoculated with Saccharomyces cerevisiae in an anaerobic anode chamber under optimum operation conditions. The results revealed that increasing operation temperature had a significant effect on COD reduction and operation time. The optimum pH and temperature were 6 and 34 °C, respectively. After treatment of the dairy wastewater, the COD, TSS, TDS, EC, SO4, and NO3 removal efficiencies of the MFC were found to be 92%, 79.3%, 62.5%, 38.6%, and 60%, respectively. These removal ratios confirm ability of living microorganisms to digest the organic matter present in dairy wastewater to produce electrical power, with maximum values of 850 mV and 28 μA produced for voltage and current, respectively. Microbial Fuel Cell technology thus offers an efficient approach to both dairy wastewater treatment and energy recovery.

Monika Sharma, El‐Sayed Salama, Peng Zhang et al.

Journal of Water Process Engineering • 2022

AbubakarMuh'd Sani, Nishit Savla, Soumya Pandit et al.

Sustainable Energy Technologies and Assessments • 2021

Di Wu, Xiaoyun Yi, Rong Tang et al.

The Science of The Total Environment • 2017

Pei-Fang Tee, Mohammad Omar Abdullah, I.A.W. Tan et al.

Journal of environmental chemical engineering • 2016

Zhou Fang, Xian Cao, Xuexiao Li et al.

Bioresource Technology • 2017

Journal of Bioprocessing & Biotechniques • 2016

Wastewater treatment has traditionally been an energy intensive process, consuming between 950 and 2850 kJ/m3 of wastewater treated. By one account, wastewater contains 9.3 times more energy than is used to treat an equivalent volume, thus creating the desire to harness this energy through the use of a Microbial Fuel Cell (MFC). MFCs oxidize organic substrates, allowing simultaneous wastewater treatment and electricity generation. Previous research has primarily focused on the development of MFCs for electricity generation, mainly at the small, laboratory scale. Herein, an industrial-scale MFC process is proposed for the treatment of wastewater from a microbrewery based on a previously published model describing MFC operation. Through optimization and scale-out, a two chamber MFC process is developed for the treatment of 84 L/hr of wastewater with an inlet Chemical Oxygen Demand (COD) of 3000 mg/L. An overall COD conversion of 91.9% is achieved allowing effluent to be discharged directly down a municipal sewer. Electricity generation is 26.4 kWh, 107% of the operational requirement. With a payback period of 5 years, this work shows that there is potential for the implementation of MFC technology in the food and beverage industry.

Meixue Dai, Yiming Wu, Jie Wang et al.

Chemosphere • 2022

Beizhen Xie, Bojie Liu, Yue Yi et al.

Bioresource Technology • 2016

Mina Nili Ardakani, Gagik Badalians Gholikandi

Biomass and Bioenergy • 2020