Figure 4 - uploaded by Uranbileg Daalkhaijav
Content may be subject to copyright.
6 Mediator dye resazurin is deep blue in its oxidized state but turns into pink resorufin form due to reduction (O'Brien et al., 2000). All the conditions for the microbial fuel cell operation have been kept the same while concentrated resazurin was added to the anodic medium to the final concentration of 1 mM. The concentration was chosen based on Wilkinson et al. (2001) study where 1 mM electron mediators, such
Source publication
The challenge of access to clean water is apparent throughout the world as it experiences overpopulation, the resulting pollution, and struggle with various manifestations of global climate change. In addition, as the first world countries are able to enjoy clean drinking water, they are increasing the global energy demand thereby exacerbating the...
Similar publications
This study simulated nitrogen-compound concentration changes in rivers, taking into account uncertainty analysis carried out by the Monte Carlo Method. The study area is the final stretch of the Piracicaba River, located in Minas Gerais, Brazil, which is an important Doce River tributary. The uncertainty analysis took into account random generation...
Citations
... Nitrification (by aerobic bacteria)/denitrification (by anaerobic bacteria) is a biological mechanism for extracting ammonia from urban and industrial wastewater, but at higher concentrations of ammonia, the cycle is impaired due to the toxic effect of ammonia on nitrifying bacteria [7]; [6,9]. Uranbileg Daalkhaijav [10] announced 70 % elimination of nitrification/denitrification ammonia from wastewater (Uranbileg and [5,10]. Reza et al. [11] recorded nitrification/denitrification removal efficiency of ammonia at various concentrations 25, 40, 80, 120, and 160 mg/l which are 87 %, 89 %, 72 %, 66 %, and 62 % [11,12]. ...
... Nitrification (by aerobic bacteria)/denitrification (by anaerobic bacteria) is a biological mechanism for extracting ammonia from urban and industrial wastewater, but at higher concentrations of ammonia, the cycle is impaired due to the toxic effect of ammonia on nitrifying bacteria [7]; [6,9]. Uranbileg Daalkhaijav [10] announced 70 % elimination of nitrification/denitrification ammonia from wastewater (Uranbileg and [5,10]. Reza et al. [11] recorded nitrification/denitrification removal efficiency of ammonia at various concentrations 25, 40, 80, 120, and 160 mg/l which are 87 %, 89 %, 72 %, 66 %, and 62 % [11,12]. ...
... The ozone molecule's direct oxidation of ammonia is relatively sluggish and produces nitrate, which hence does not remove absolute nitrogen. Xianping Luo et al. [17] announced the ozonation elimination of 85 % of ammonia (Xianping [17],Uranbileg and [10]. Zong et al. (2017 recorded 28.5 % ozonation extraction of total nitrogen [18], Reza et al, 2010. ...
Eichhornia crassipes root powder (ECRP) has been used to remove ammonia from aqueous solutions. The biosorption factors such as biosorbent dosage, pH, initial ammonia concentration, and contact time have been considered in batch conditions. The optimal conditions, at pH (6), sorbent dose 5 g/l, time (30 min) ammonia concentration (10 mg/l). Langmuir is better suited than Freundlich isotherm. The kinetic models Thomas, Yoon-Nelson, and Bohart-Adams were applied. These models showed that the adsorption capacity decreased with flow rate increases as follows: 32.57, 31.82, 31.25, and 30.17 mg/g, respectively, at a flow rate 10, 15, 20, and 25 ml/min. The root powder of Eichhornia crassipes was used to treat specific drainage wastewater obtained from the Sabal drain at Menoufia, Egypt. The average efficiency of ammonia removal was 87% per batch adsorption method at pH value = 7.5, sorbent dose 5 g/l, uptake period (30 min), and primary load 7.1 mg/l; however, ammonia removal by column continuous adsorption method exceeded 94%. In addition, ECRP is efficient in removing arsenic, sulfate, nitrates, nitrite, silica, iron, manganese, copper, zinc, aluminum, and lead from actual sewage wastewater, in addition to removing more than 75% COD.
... The use of electrogenic bacteria makes MFCs more suitable compared with the conventional fuel cells that use precious metal catalysts. MFCs can also take advantages of using low-cost substrates (such as organic waste) and environmentally available electron acceptors (such as oxygen) [33,107,108]. ...
Increasing energy demand has led to excessive depletion of fossil fuels, significant emission of pollutants and climate change. It is an urgent task to secure clean alternative energy sources to ensure sustainable development. Bioenergy derived from biomass can play a major role in the future energy system due to its renewability, and sustainability. The wide distribution of biomass provides rich sources of raw materials, while the significant development in bioenergy conversion technology improves its competitiveness. Bioenergy, which is used to produce biofuel, heat, and electricity, may be generated via various routes such as thermo-chemical, biological, and bio-electrochemical processes. An energy-efficient and eco-friendly biomass pre-treatment process may effectively enhance bioenergy conversion. Biomass-based heat and electricity can constitute an important fraction of energy in industrial and household sectors; while biofuels may provide energy supply in transportation particularly for heavy goods vehicles and aviation. The biofuel system must be optimised to ensure sustainability, maximise efficiency and minimise cost. It is important to fully understand the mechanisms and the correct combination of biomass pre-treatment, bioenergy conversion, and upgrading technologies. Particular attention should be paid to establishing effective policies to promote the bioenergy and biofuel industries.
