[vc_empty_space][vc_empty_space]
The potential of tropical microalgae as flocculant in harvesting process
Rinanti A.a, Purwadi R.b
a Environmental Engineering Department, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia
b Chemical Engineering Department, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© Int. J. of GEOMATE.This environmental biotechnology research aims to obtain a diversity of freshwater tropical microalgae which has the ability to form a floc naturally to be utilized as bioflocculants in the process of harvesting other tropical microalgae biomass that does not have such ability. The microalgae Chlorella vulgaris, Chlorella sorokiniana, Chlorococcum sp., Closterium sp., Oscilatoria sp., Monorapidhium sp, Ankistrodesmus sp. and Scenedesmus obliquus are cultivated in batch culture and their environmental condition is controlled at 25°C, fed with 5% pure CO2 with a flow rate of 5 L/min. To determine the ability of microalgae strain as microalgae flocculant or not, it is necessary to calculate recovery efficiency. The addition of Scenedesmus obliquus and Ankistrodesmus sp. as flocculant microalgae followed by slow mixing allows better interaction between flocculant microalgae and non-flocculant microalgae, so the floc size increases. Scenedesmus obliquus and Ankistrodesmus sp. can be used as flocculant species because the value of settling for both types of microalgae is more than 50% for 60 minutes while other microalgae species can be categorized as non-flocculant microalgae since within 60 minutes settles less than 50%. The study also proved that no greenhouse gas was formed during the bioflocculation process. Thus the method of bioflocculation with Scenedesmus obliquus and Ankistrodesmus sp. is feasible to be applied to harvest microalgae biomass on an industrial scale.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Bioflocculation,Diversity,Flocs,Harvesting,Tropical microalgae[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors would like to thank Directorate for Research and Community Services as well as Directorate General for Strengthening Research and Development at the Ministry of Research, Technology, and Higher Education of Indonesia for funding this study through the scheme of “Hibah Penelitian Pasca Doktor (Post-Doctoral Research Grant) 2018″[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.21660/2019.56.4640[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]