Questions related to Biofuel Production
Microplastics (MPs) pollution has become a global environmental concern because of their severe threat to biota. However, limited studies on the elimination of MPs pollution were reported. The conventional treatment methods such as coagulation, sedimentation, screening, and flotation were not suitable for MPs owing to their smaller size than plastic items. Hence many methods for MPs treatment, including AOPs (direct photodegradation, photocatalytic oxidation, and electrochemical oxidation) and biodegradation, have been examined.
Pretreated lignocellulose releases sugars during "Enzymatic hydrolysis" and those sugars can be used to produce biofuels. Can someone explain how can we determine the "amount of buffer" which needs to be added to the reaction mixture containing pretreated biomass and crude enzymes?
I am currently looking for an industrial process that can use some intensification in the separation part of the process. I am very interested in intensified separation for biofuel processes (bioethanol/propanol/butanol), intensified methanol production using pressure swing to produce CO from CO2 from the revers WGS reaction, intensified carbon capture,...
If anyone has experience in these fields and can inform me if one of these could be a good dissertation, I would like to hear it! I am also curious for other processes that can use some intensification to reduce energy use/cost...
If you have any info you can also send me a message!
I am currently conducting my thesis on production of biodiesel. I have already conducted analysis on it using GC/MS and it was successful. I used n-hexane as a solvent to extract the lipids from the feedstock (a seaweed (macroalgae)) and then i reacted it with excess methanol. I was then left with 2 layers that were separated by a separating funnel. I am having concerns with regards to how well methanol dissolves the biodiesel and which layer was with biodiesel. As to my knowledge since biodiesel is more polar it will reside in the polar solvent, therefore in the methanol layer. Could someone confirm this or provide me with a paper that may help explain this?
In my thesis I used hexane to extract lipids from macroalgae followed by reaction with methanol to perform transesterification. I then left them to separate leaving 2 layers and wanted to ask if it is possible to wash both layers with chloroform and then separate the chloroform from both layers. It should be noted that in these 2 layers there is still methanol and hexane.
I determined the calorific value of bio-diesel with the help of bomb calorimeter. Is there any other methods are available to find calorific value?. thank you.
I wanted to analyze the rate of enzymatic saccharification in my pretreated biomass my usual vendor is having some issues with delivery due to COVID 19. So, I usually buy from MP Biomedicals. Since that is going to set back my work even further, I decided to look for other options and found the pricing to be unbelievably high. Just wanted to know if such crazy high pricing is normal for beta-glucosidase used in biofuel production. Maybe I am looking at the wrong options. Please let me know there are other affordable options from beta-glucosidase purchase.
Thanks in advance.
I cordially invite researchers to contribute an MS on “Value Addition in Biofuel Production Using Innovative Breeding Techniques” for the forthcoming edited book entitled “Technologies in Breeding Field Crops” (Springer Publication). Kindly send your email id for a formal invitation.
If we do slow pyrolysis for some organic material "wood' as example and then we condense the vapor we will get the liquid of tar and bio-oil
Question is :
If we do pyrolysis for the produced liquid tar and bio-oil: Will that enhance the properties of the produced bio-oil?
as example its stability and its heating value
Any significant progress in the design or innovation of solid catalyst for biomass hydrolysis and sugar fermentation into alcohols in a biorefinery? If yes, I would like to have some recent updates regarding that subject. Thank you all
I am doing my thesis and would like to extract triglycerides from Olives or Olive Oil. I will be analysing the amount of triglycerides that are present in the olives or Olive Oil I will be testing. I would also like to extract them so that I may convert them to Fatty Acid Methyl Esters for biofuel. Does anyone know and/or have any papers that I may use? Thank you.
Basically I need a strain to transform it with some exogenous gene, I need a strain which should grow fast in less than a day, should have protocols to transform it, can be grown in an open system i.e municipal or agriculture waste, to convert it into biomass. the biomass will then be used for biofuel production. remember there should be high lipid content in biomass of that strain...
kindly guide me with such a strain which i can use in my project.
thanx in advance
#Microalgae #Metabolicengineering #biofules #Geneticengineering
Based on your expertise, what are advantages and disadvantages of producing H2 or CH4 from renewable sources (wind, PV etc)? I am mainly interested in collecting different points of view, e.g. local pollution, global climate mitigation, energy engineering and mitigation of peak demand, economic aspects, social impact, policies, quality and safety of the final product, regulatory barriers.
The world is trying hard to switch into Electric Vehicles right now and not many research units are focusing on IC Engines anymore. At the present scenario, is there any known Post-doc position vacancy likely to be applied for, in Engines field.??
Kindly do Share your expertise in this.
we have a double-chambered MFC that produced an OCV that reached 220 mV in 1 h, and was getting higher. after 24 hours the OCV dropped down, and I don't know why.
I want to measure the generated current first to plot the I-V curve, then the power density curve.
- Is the OCV drop because we didn't use an external resistance? when should we start applying it to the MFC? can someone explain it in details please.
- How to decide whether to use a fixed resistance over time, or to use a range of different resistances to carry out these measurements (I-V Curve, Power density Curve)?
I'm using a digital Multimeter for recording Voltage across either fixed or varied resistors.
Ash content is one of critical parameters considered for feedstock selection in biomass conversion process. Suggest suitable technology for high ash with biomass feedstock.
Hello, I am try to measure the voltage and current of a solution (typically PBS or other nutrient media) with bacteria like E coli with mediators like neutral red dye or methylene blue. Typical electrodes I'll use is two carbon or copper and aluminum combination in a single compartment setup. I know E coli K-12 shouldn't conduct current compared to other electroactive bacteria, but I'm just trying to get an understanding of setup. I've been using a digital multimeter and I can usually get a voltage measurement, although it is low and varies with the electrodes I use. However, I haven't been able to get reliable current measurements since I'll get fluctuating readings of my multi meter and I don're really know what to make of it. i read papers where this simple tool is used for current and voltage so I'm not sure what I am doing wrong. Thanks.
I m doing research on biofuel production from lignocellulosic biofuel. I have Cellulase Enzyme from Aspergillus niger (Sigma), is this sufficient for the hydrolysis process? If anyone knows the detailed protocol about enzyme used method please recommend me for the process.
Thanks in advance!
Liquid biofuels such as biodiesel, bioethanol are derived from different biomass feedstocks. Let's know learn about less water footprint technology used for liquid biofuel production
I, Dr. Rachan Karmakar, have done my Ph.D. in 2018 in the field of energy and environment. My areas of specialization are as follows-
1. Biofuel production and characterization
2. Analysis of emission from engines
3. Waste water treatment
4. Algae culture and algae-based technologies
I did my masters in Environmental Science. I have 12 original and published papers including three conference papers (more to come out soon), three years of paid eaching experience and six years of research experience.
I am looking for a post-doctorate position in USA and other countries of America, India, UK, Japan, South Korea and other countries with good research facilities.
Please find my CV attached.
If you are interested to supervise me kindly get back to me or give your email id. I shall contact you through email then. My phone number and email id are given below and in the first page of my CV.
I request every one to help me by sharing and recommending this question, if possible, so that this message can reach maximum number of people and an expert, who can offer me a postdoc, receive the same.
Dr. Rachan Karmakar
Phone: +91 8437525941
Biodiesel can be blended with other fuel to produce blended biodiesel fuel base on weight basis or volume basis. What is the parameter needed to consider in blending activity?
Kindly please assist and share any reliable journals on this issue. Thank you.
Can I explain oscillatory baffled reactor for liquid bio-fuel production to a layperson? Moreover, what is a potential benefits of the oscillatory baffled reactor to society? What is the potential benefits or wider impact to society?
suggest optimization method used for property optimization of liquid bio fuel mixture for designing optimized liquid bio fuel for diesel fired boiler
I have contacted many suppliers , but either they have stopped the production or no one is replying back. If anyone knows any contact. Please help me.
I would like to carry out research on Enzyme supported magnetically recoverable nanocatalyst systems for Biodiesel production. Homogeneous, heterogeneous and free enzyme based catalyst have main problem of catalyst separation and regeneration. Heterogeneous catalyst solves this issues but active sites of surface molecules can produce leaching in harsh reaction conditions and also it requires centrifuge and filtration techniques. This may give a chance to increase the cost of the products . This is the main challenge for any chemical reaction system. So I am considering Magnetically recoverable nano catalyst or enzyme hybrid catalyst for biodiesel production. This kind of catalyst system can be overcome the challenges of catalyst separation and regeneration of the homogeneous, heterogeneous and enzyme based catalyst system. I provided the challenging issues of biodiesel production to my Prof. But Prof. is not satisfied, my Prof. needs more challenges issues/Breakthroughs in the field. I tried my best level up to my knowledge. I cannot fulfill the requirements of my Prof.
Next-generation biofuels are toxic to microorganisms producing them, thus adversely affecting the production yield. The expression of efflux pumps presents a promising strategy for many biofuels like the longer chain alcohols, alkanes, alkenes and cyclic hydrocarbons, however recent studies show evidence that these are not effective at exporting short-chain alcohols. Could there be methods to make these efflux pumps less specific to solvents and still perform their function?
Can anyone tell the conversion levels used in a commercial FTS plant for a one pass reaction. And the same if you produce methanol in a commecial FT plant.
I am working on the reaction kinetics of biodiesel synthesis from rubber seed oil. I am proposing a pseudo-first order rate equation since the methanol will be in excess. I needed to test the proposed rate equation with available published data from literature
What do we feed the termites (soil feeding) with to produce more methane gas?
What type of environment can we create for the termites to enable them produce more?
How do we capture the gas produced by termite?
What is the quantity of methane gas that can be produced per termite/day?
I'm studying for biofuel production via hydrodeoxygenation and deoxygenation method.
i want to utilize food and vegetable wastes to be bio-processed and ultimately results in to Biofuel... that can be further upscale for industrial application..
we are in developing abrasion resistance of warm screws which are using for squeezing palm oil fruit ( containing some sand and other hard particle from farming lands). Because of their heavy weight (around 500kg) it is not reasonable to change whole material with high alloy steels or cast irons.
I am doing WTW analysis of Bio-diesel and Bio- CNG Using GREET Model.
Can anyone provide some methodology which can be utilized to quantify Biogenic CO2 emissions?
i need process detail, composition of citrus peel, composition of fermented products, pretreatment and hydrolysis of citrus peel.
I am working on Gas-Solid system and I would like any solid and gases that reacts with each other to give any valuable product or eliminate some pollutant within temperature of 150 °C..
membrane technology steadily increases as it covers a wide variety of chemical and physical applications mainly because membranes offer ease of operation, economic viability for smaller unit operations, low energy cost, compactness, and so on. Generally speaking, membrane is attractive because of its unique ability to permeate specific components pass through it. What is the role of microbiology and microbiologist?
hi everyone, well, I am going to start my research work on tobacco plant for the purpose to increase oil contents for biofuel production by microorganisms but I am not that much familiar with it, can anyone please help me with this issue? I will be grateful as I am fresh Ph.D. scholar. thanks
Iam working in a project that testing the local plastic water tank to be used for AD in household level. I wonder if there is an optimum volume of this from experience worldwide. The tank volumes available range from 0.150 to 10 m3.
Klebsiella pneumoniae is a common causative agent of nosocomial infection and many species have been found to perform fermentation for biohydrogen production. are there possibilities of applying this microorganisms in the future in industries fro biofuel production.
The increasing demand for biofuels and their production in the developed world drive not only grain prices up, but the effect is felt most acutely in developing countries where grain comprises a larger share of food budget/expenditure. In as much as the rich benefit from comfort in using bio-fuels, are there any safeguard/measures to help minimize or if possible prevent the trade-off links
It was nice to get an answer for my question? However, you didn't show if it works or not? Did anyone succeed to get bio-fuel from olive pomace or not? And what was the quality of this biofuel? Is it as good as bio-jet?
Is there some one works on Jatropha oil as bio-jet resource?
I'm looking forward to have a partner works on Jatropha oil as bio-jet resource to join to our research group and set up proposal for FP7, 2014.
I need to assess CO2 emission factors (KgCO2/ Kwh of energy input) for a gas boiler, a steam reformer, anaerobic digester, fuel cell and an water electrolysis.
anyone could help me with a method or documents?
By solving operation point the main handicaps are cost and efficiency, are there any applications which are closer to the solution for these problems?
I would like to know the opinions of professionals about the production of second generation biofuels and to find out if Jatropha is one of the second generation feedstocks.
Even though there are numerous research papers in production, utilisation of various biofuels, with variation of many operating parameters, I can find very less information in actually using the tested fuels for practical use. What could have been the reason behind all?
Recently I am working on bioethanol production from waste. I isolated cellulase enzyme from local fungi in Indonesia, however enzyme purification seems not so easy because I could found mycelium of fungi under microscope. When I conducted for hydrolysis of cellulose to glucose, I could obtained glucose in high purity. However, when I did fermentation with food grade yeast, I just obtained less than 1% of bioethanol by using GC analysis with n-propanol as internal standard.
Could anyone kindly give any advices and references for me to know the reason as well as improve my experimental condition?
As current research on microalgae cultivation and biofuel production is booming, weather micralgae is an option for future sustainable transportation
I am working on an experiment to produce bioethanol using seaweed hydrolysate as a substrate. However, there are two sugars present (Rhamnose and Glucose), the yeast strain I have is Kluyveromyces marxianus K-21. This yeast strain is able to utilize glucose, however, for Rhamnose I am not too sure since I have not carried out the experiment but on some studies it is not able to completely utilize fully Rhamnose. I have searched journals and papers about strains of yeast that are able to utilize both, such as Pichia stipitis and Candida shehatae but I am not sure specifically which strain is able to utilize both or just be able to utilize Rhamnose. I am really looking forward to your expert opinions. Thank you!
I am using 500ml GL45 Media storage bottles.
I want to be able to collect the gas via ballons or let it run through a scrubbing solution as per my choice.
Ozone was bubbled into HA + NaOH solution through a diffuser airstone using REDOzone Sterilizer RZ-380MG with an output of 400mg/hr.
Is it possible that ozone output was lacking and therefore zero order reaction ?
Hi, i am working on microbial fuel cell design and feasibility study for industrial application. and i am having hard time to find any case study or practical waste water treatment in big scale. some suggestion please. thanks to all.
Now a days there is increasing interest among researcher and scientists to convert agriculture products to value added products. For example, agriculture by-products are used as substrates for Solid state fermentation to produce nutrients enriched feed for animals and also these by-products are used for producing various enzymes to which is used industrially. But the value addition of these by-products add extra cost to the final produce. What is your view in the above context.
I am working on the production of biodiesel through solar energy as heat. However, I have to mix the content by electrical energy which is the drawback in my approach. I would like to transfer the synthesis of biodiesel totally on solar energy rather than using any other form of energy. Is there any approach that can mix the reactants in the flask.
When cultivating algae for biofuel production, how do you calculate the CO2 reduction?
My proposed system is based on an integration of a Raceway pond for algae cultivation to a heat and power plant. The flue gas from the plant is used as carbon source which leads to a CO2-sequestration effect.
In the next step, the biomass is used as a fuel, leading to new CO2-emissions, but also leading to a reduced need for fossil fuels.
So my question is, how do I calculate the total CO2 reduction?
Text snapshots from relevant blogs & white papers:
New supplies of feedstocks must be developed, such as trap oil, DAF oil, camelina, jatropha, etc. in order for the biofuel industry to grow appreciably. Not many noticed that Mexican and Brazilian jatropha oil were conditionally approved as RIN-producing pathways by EPA for biofuel in 2015.
The US produces about 2 billion pounds (263 million gallons) of yellow grease annually. This production level has not grown appreciably in the last 5 years.
In 2015 the biodiesel producers used 1.254 billion pounds (165 million gallons) of yellow grease. Thus 63% of available yellow grease was used for domestic biodiesel production.
In 2015 the US exported .58 billion pounds (73 million gallons) of yellow grease, primarily to Europe for biofuel production. Thus 28% of available yellow grease was exported.
Therefore, only 9% of yellow grease was used domestically for purposes other than biodiesel, a surprisingly small number.
Currently, tallow is used mainly as livestock feed, and also for the production of soap, lubricants, paint and varnish in a limited quantity. If the majority of tallow is diverted from the current application to fuel production, it may cause indirect effects such as the use of other crops and materials to replace the diverted tallow. In this study, the indirect effects are not considered.
Yellow grease is a mature market. It may not have that much more room to grow. Biodiesel currently uses half of yellow grease produced (EIA; Swisher 2015). This amount of yellow grease is enough to produce about 140M gallons of biodiesel. While yellow grease use in biodiesel production has grown quickly, it is unlikely to continue this rate of growth. An 8%/year increase would provide feedstock for an increase of 11M gallons of biodiesel a year. This increase would come from reducing the amount of yellow grease going to animal feeds. The amount going to biodiesel may continue to increase, but the size of these increases is going to tail off as it becomes difficult to bid yellow grease away from other uses.
Animal fats have been a major contributor to biodiesel with a total of 986M pounds of feedstock in 2014. Animal fats are a small part of animal value, so there is not going to be much price response. Per capita consumption of meat in the United States continues to trend downward (ERS 2015). Consistent with this, Table 7 shows a slight downward trend in the rendering of animal fats. There is little potential for increasing the total quantity of animal fats, so biodiesel would have to bid animal fats away from other uses. These other uses include livestock feed (especially poultry), pet foods, and the oleochemical industry as well as edible products (Swisher 2015). Swisher describes pet foods and aquaculture, where fats and oils are replacing fish meal, as growth areas for the rendering industry.
We predicted that soybean oil, corn oil, and tallow will be used in industrial products based on their low price and availability. Increased use in industrial products is a direct result of increased demand for biodegradable lubricants and oils.
... we took an average of the relatively flat soap production over the last five years and projected a continued trend of constant production. The remaining industrial uses (fatty acids, paint and varnish, resins and plastics, and other inedible products) were averaged over the 30-year period of available data (1980-2010) and assumed to remain constant as we were not able to identify any trends for these categories (USDA-ERS, 2016f).
Inedible corn oil consumption was previously dominated by use in livestock feed but has been used increasingly as a biofuel feedstock over the past five years. However, inedible corn oil production has been relatively flat since the end of 2013 and is expected to remain flat as extraction yield improvements and the number of producers fractioning out corn oil have leveled off (Jessen, 2013).
Increased meat production will also have the effect of increased tallow consumption in livestock feed. In addition, increased consumption of lubricants, one of several industrial uses of FOG, will increase the consumption of tallow. Overall, increased production is expected to outweigh increased consumption resulting in about 53.5 million pounds or 7 million gallons of biodiesel equivalent growth in availability per year.
[White/poultry fat]"other grease" availability for biodiesel production to increase by about 23 million pounds or 3 million gallons of biodiesel equivalent per year.
The amount of yellow grease used in biodiesel has steadily increased over the past five years and was the second largest input for biodiesel production in 2015 (Figure 2). However, this trend is likely a result of bidding yellow grease stocks away from formerly prominent uses in livestock feed and export. We predict that yellow grease consumption in livestock feed will remain constant as a result of constant production, and that other FOG will be used increasingly in livestock feed. We also expect that yellow grease exports will have dropped to zero by 2016 and will remain at this level. Thus, total consumption and total availability for BBD are expected to remain constant throughout the projection period.
Imports necessary to meet the RFS mandate are expected to increase year over year as the deficit between available feedstock and required volumes increases. In 2015, the United States imported roughly 334 million gallons of biodiesel and 204 million gallons of renewable diesel (EIA, 2016b, c)
A continued RFS BBD requirement increase of 100 million gallons per year compared with an average of 31.5 million gallons of increased FOG availability per year will result in exceedingly larger deficits over the projection period... Based on a continued 700 million gallon gap between the BBD mandated volume and BBD needed to fulfill the total advanced and renewable mandate (EPA, 2016a), we expect a deficit of 1.274 billion gallons in 2018 that must be imported; an amount more than double the 2015 BBD import levels. Increased BBD requirements greater than increases in domestic feedstock production will put pressure on feedstock commodity markets and negatively affect other domestic sectors that depend on these resources.
I am looking for a published reliable source (FAO/any research article), from where I can get the calorific value of all the agricultural crops like rice,wheat, pulses and oil-seeds of all kinds etc. Also it will be great if the recommended article has breakdown of this calorific value-into proteins, carbohydrates etc.
I am going to perform an experiment using Very high gravity ethanol fermentation medium to monitor the residual glucose, cell number and ethanol production over a hourly period. I performed the experiment before, however, the yeast did not grow well on the agar medium that I used ( YM agar), as a result of this, I am wondering if when also culturing the yeast they should also be spread on Very high gravity ethanol fermentation agar medium. If so, how much agar should be applied?
The basal fermentation medium contained 40 g of glucose, 5 g of yeast extract, 4 g of (NH4)2SO4, 0.3 g of MgSO47H2O, 0.3 g of CaCl2H2O and 1 g of KH2PO4 per liter of deionized water.
Looking forward to your response.