Comprehensive Algae Fuels Report

A detailed report on all aspects of the algae fuel value chain, the Comprehensive Oilgae Report will be of immense help to those who are on the threshold of investing in algae biofuels. More »

Algae-based Wastewater Treatment

Compiled by a diverse team of experts, with experience in scientific and industrial fields, the Comprehensive Report for Wastewater Treatment Using Algae is the first report that provides in-depth analysis and insights on this important field. It uses innumerable data and information from a wide variety of expert sources and market studies, and distills these inputs and data into intelligence and a roadmap that you can use. More »

Comprehensive Guide for Algae-based Carbon Capture

A Comprehensive Guide for Entrepreneurs and Businesses Who Wish to get a Basic Understanding of the Business Opportunities and Industry Dynamics of the Algae-based CO2. More ››


Comprehensive Report on Attractive Algae Product Opportunities

The report provides an overview of the wide range of non-fuel applications of algae – both current and future prospects. It will provide entrepreneurs with an idea of how to derive more benefits from their algal energy ventures. The report provides detailed case studies, success stories and factoids of companies that have been involved in the algae products venture More »

Comprehensive Castor Oil Report

There is no other comprehensive report available for castor oil anywhere in the world. This is the first of its kind, and currently, the only one. More ››

Bioplastics Market & Strategy Advisor

Bioplastics Market & Strategy Advisor, published by the Bioplastics Guide, is a unique guiding framework for businesses and entrepreneurs to chart a way forward provides a critical analysis of the status, opportunities & trends of the global bioplastics sector. More ››

Algae-Useful Substances

Pigments

PUFAs

Vitamins

Anti-oxidants


Other Novel Applications

Talk to us

Email: consult@eai.in

(or)

Call Narsi 7358263274

займ на карту ночью


Aeration in a photobioreactor

September 29th, 2010 | 3 Comments | Posted in Uncategorized

I started yet another interesting day at office by opening the archives of newsletters and went through all the organized data stored in its annals. I came across some very useful data dealing with various aspects of aeration in a photobioreactor and felt it would be very insensitive of me not to share it with all the wonderful readers of the Oilgae blog. So here is a series of posts dealing with the above-mentioned topic:

Introduction
Aeration of cultures serves to keep algae in suspension, to supply the carbon needed for plant growth and pH control, and to strip O2 from the culture media, preventing supersaturation. The aerator system comprises any suitable equipment for:
(a) Introducing a carbon dioxide supply into the bioreactor
• Carbon dioxide can be blended with compressed air at a certain percentage (preferably from 0.1% up to 20% of CO2) to provide carbon source for algal photosynthesis.
• In some cases, organic carbon (for example, in the form of acetic acid and/or glucose) can be added as needed into the culture medium to support algal growth.
• Any suitable source of carbon dioxide can be used, including but not limited to industrial grade, food grade, CO2-rich flue gases emitted from power generators burning coal

(b) Efficient culture mixing
• To ensure that all algal cells come in contact with the nutrients, CO2 and light for optimum growth.
• To ensure that produced oxygen is removed from the culture systems.
• To maintain effective turbulent flow within the photobioreactor

Optimum Aeration Condition in a Photobioreactor
Several studies have characterized the optimized aeration by carbon dioxide gas for microalgal production in a photobioreactor. Air enriched with 5% or 10% (v/v) CO2 at rates of 0.025-1 vvm (volume of air/ medium/time) is found to be cost-effective for mass culture (Zhang et al, 2002). In flat panel photobioreactors, an optimum aeration rate of 0.05 v/v/min has been proposed sufficient to improve the mixing and mass transfer (Sierra et al, 2008).

Types of Aerator Equipments Used in a Photobioreactor
There are different types of equipments that serve aeration purposes. Most common among them include spargers or diffusers. The following details provide the features of a few types of the aerator designs employed in a photobioreactor.
Sparger is constructed with materials like biopolymers, or perforated metal or sintered glass with varying pore size based on the design and operation requirement. The sparger is connected to the base of the photobioreactor. The bioreactor is aerated by rising CO2enriched air bubbles into the bottom of the photobioreactor via sparger assembly. The bubbles move up the entire photobioreactor column thereby getting dissolved in the culture medium.
Bubble formation process at the sparger can be separated into 2 stages:
In the first stage, the bubble expands, while staying attached to the nozzle
In the second stage, the buoyancy forces cause the bubble to move away from the nozzle. Bubble growth continues through a narrowing neck connecting the bubble to the nozzle. When this neck closes and the bubble detaches from the nozzle, fluid rushes in to the region of the bubble neck

There are different types of aerators equipped in a photobioreactor. Some important types are:
 Porous Tube Diffuser
 Silicone Rubber Diffuser
 Sandstone and Stainless Steel Disk for Air Diffusion
 Sintered Air Diffuser
 Membrane Sparger
 Mott Sparger
 Ring or Orifice Sparger

We’ll see in some detail, the characteristics of these aerators in the next blog.

Some interesting links

Building Energy Analytics

Some Innovative & Unique Solar Power

Leave a Reply 8802 views, 2 so far today | | posted by
Follow Discussion

3 Responses to “Aeration in a photobioreactor”

  1. Anonymous Says:

    A good Photobioreactor can yield a full production of algae in as little as four days. By producing in bulk quantities continuously, the cost of the end product is made much cheaper. To make it effective, a three second light and 9 seconds darkness technique is applied. It makes the process much faster. The sunlight or through the help of a concave mirror may be the source of light. After which, the algae is harvested at the bottom of the funnel. algae bioreactor manufacturer

  2. sam Says:

    vCXL-フランスのトップブランド ルイヴィトン バッグ 革は、革新的でエレガントなトラベルハードケースを設計し、製造を開始して1は、開始 ルイヴィトン コピー ハンドバッグや世界のために連動アクセサリー製品。ルイヴィトン 新作 2013休日シリーズのハンドバッグは、古典的なスタイルに導入 人気 ルイヴィトン 財布 もう一度古典を再現するスタイリッシュな新しい要素と組み合わせる。
    If not so anxious that most people would choose foreign purchasing Louis Vuitton Bags.Put aside the different countries and regions of different shopping preferences,Louis Vuitton UK buy Cheap Louis Vuitton hand-selected to not much difference,coupled with the big emphasis on the Chinese market,a lot of style is already the world simultaneous release,so the price is only one factor argumentative.Yes ah,regardless of money or not,who would not want to save money too?Especially the hundreds of thousands,to the less louis vuitton outlet there are thousands of big luxury.
    louis vuitton outlet 2013 spring quarter Men bags series,fluorescent colors,traditional innovation,louis vuitton sale bags for men inject new vitality.Since the designer Kim Jones added to the luxury brand cheap louis vuitton later,such as louis vuitton outlet online the French veteran hit booster as being a brand new look,young fashion taste can be described as more and more intense.
    Cheap Louis Vuitton luggage advanced customization services,Louis Vuitton Handbags section where a custom color Haute,is a senior in Louis Vuitton UK means,and the most common in the fashion circle is Haute couture-haute couture.By the designer and fashion boutiques in Paris,louis vuitton outlet must be members of the Association accreditation,an association recognized by the designers just enjoy “haute couture designer” of the title,its haute couture fashion works in order to use the title,and is protected by law.
    louis vuitton sale 2013 summer series handbags extraordinarily colorful and romantic extraordinary in louis vuitton outlet store,sweet peach pink,temperament dark blue as the main colors,combined with artistic temperament canvas texture printing,filling the art.In addition to flowers outside printing,more classic louis vuitton outlet Logo embossed Logo embossed or similar color as a decoration,cheap louis vuitton filling the big luxury noble gas.
    ルイヴィトン激安 2013年の春、さわやかなシンプルさの夏シリーズは、さらにいくつかの驚くほど簡単ですが、近い精査時にそれらを実現 ルイヴィトンのバッグ 美術品や工芸品の誇り:金属表面のストリーマあふれ感覚にマージ小さなスパンコール、少し大きめのビーズ縫い付けの場所微妙な三次元、フルを作成するには、グリッド上の4つの同等な方法の数千人 ルイヴィトンアウトレット 職人の技。 ルイヴィトン直営店 あなたの訪問を楽しみにしています。

Trackbacks

  1. Characteristics of major Aerators - Oilgae Blog  

Leave a Reply

You must be logged in to post a comment.


Hot Algae Products (Click to know more)
Omega 3 Spirulina Astaxanthin Chlorella

Get in Touch

Send us a message to know more on how oilgae.com can help your organization.