Biotechnology Carbon Capture and Storage by Microalgae to Enhance CO2 Removal Efficiency in Closed-System Photobioreactor

Abstract

The global warming issue caused mainly by carbon dioxide (CO 2 ) has triggered various efforts to reduce excess amount of CO 2 emitted into the atmosphere. A viable option is to utilize biomass production potential of microalgal consortium in aquatic ecosystem that constantly requires CO 2 to perform photosynthesis. This study aims to provide scientific contributions to the development of environmental studies, particularly of using microalgal consortiums as carbon capture and storage (CCS) agent by engineering their culture conditions. A number of studies analyzing biological reduction of atmospheric CO 2 by using CO 2 absorption capability of terrestrial plants have been facing many difficulties. Compared to various terrestrial plants, microalgae are generally considered photosynthetically more efficient. Exploitation of microalgal capability has numerous advantages, including their faster regeneration time, ability to grow in less space than terrestrial plants, and because the cultivation of microalgae can be done on a small-scale or large-scale operation, under controlled conditions, and is independent to climatic changes. Taking into account long-term advantages, this study is a preliminary study which is expected to be able to provide information and feedback regarding integrated microalgal culture system that may lead to alternative solutions of ecofriendly and sustainable environmental management technology that are capable of mitigating environmental problems caused by CO 2 (as greenhouse gas) emissions. Hence, the results of this research could be implemented by building urban microalgal ponds in efforts to develop sustainable cities in terms of CO 2 emission reduction in urban areas.

Continuous Cultivation as a Method to Assess the Maximum Specific Growth Rate of Photosynthetic Organisms

“…The model parameters obtained from the fitting procedure together with the standard deviations are summarized in Table 3. The value found for T opt is comparable to those reported in literature for microalgae: 20–30°C (Rinanti, 2016).…”

Valorization of Lignocellulosic and Microalgae Biomass

“…The microalgae culture mixing regimes may vary from one PBR to another, and since the purpose of mixing is to ensure adequate exposure of all the microalgae cells to the growth index, variables such as thermal energy, nutrients adequate illumination, gas exchange, and the quality of microalgal biomass churned from each PBR varies in terms of cell density and biomass composition [50].…”

Pengaruh Variasi Laju Alir Massa Karbondioksida Terhadap Produksi Mikroalga Scenedesmus obliquus pada Fotobioreaktor

“…Diasumsikan bahwa terjadi pencampuran yang sempurna Dalam penggunaan fotobioreaktor kolom gelembung dan pH yang terukur dengan pHmeter sesuai dengan sebagian besar kultur media mikroalga. Untuk jenis mikroalga lain seperti Chlamydomonas sp [6] penelitian yang dilakukan mendapatkan produktivitas mikroalga turut dipengaruhi dengan waktu tinggal CO2 dalam kultur dan konsentrasi gas CO2 yang semakin tinggi dapat meningkatkan produksi biomassa selama Carbon Anhydrase pada mikroalga belum jenuh, tergantung dari jenis mikroalga, tetapi kecepatan laju alir turut menghambat transfer massa yang masuk ke dalam sel [7].…”