This study investigated the biomass/lipid production, nutrient removal and fatty acid composition of an isolated mixotrophic microalga (Chlorella sp. G-9) cultured in simulated wastewater with different TOC/TN ratio. As the TOC/TN ratio of wastewater increased from 0 to 24, the growth rate of Chlorella sp. G-9 increased gradually, but did not increase further at 30. Nutrient removal was related to microalgae growth. In the wastewater with TOC/TN ratio of 24 and 30, 99.58% and 99.61% nitrogen was removed, respectively. In conditions of initial TOC/TN ratios of 24 and 30, Chlorella sp. G-9 could accumulate lipid as high as 35.3% and 36.5%, respectively. The corresponding lipid productivities were 34.2 and 32.6 mg L d, respectively, which were 13.7 and 13.0 times higher than those in photoautotrophic condition. Increasing the initial TOC/TN ratio of the wastewater could slightly increase the saturated degree in fatty acid, thereby improving the stability of biodiesel.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2019.03.011 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Spatial distribution studies on sedimentary organic matter along the shoreline of Arabian Sea: insights from Kollam, Southwest Coast, India.
Environ Monit Assess
November 2024
Biogeochemistry Group, National Centre for Earth Science Studies (NCESS), Akkulam, Thiruvananthapuram, 695011, India.
The present study was aimed at investigating the source, quality, and quantity of organic matter and labile fraction of biochemical constituents in the surficial sediments of Arabian Sea Shoreline at Kollam, India, which gives an input into the processes associated with the subsurface geochemistry pattern. About 15 surface sediment samples were collected from the five beaches for this study during January 2021. The samples were analyzed for CHN, total organic carbon (TOC), and labile fraction such as carbohydrates (CHO), proteins (PRO), and lipids (LIP).
View Article and Find Full Text PDFReduction of hexavalent chromium by compost-derived dissolved organic matter.
Environ Sci Process Impacts
December 2024
College of Land Science and Technology, China Agricultural University, Beijing 100193, P. R. China.
Compost-derived dissolved organic matter (DOM) is a heterogeneous assemblage of different redox-active organic molecules. We hypothesize that DOM can interact with Cr(VI) and reduce it to Cr(III), thereby influencing the dynamics of Cr(VI) in soil and aquatic environments. Here, DOM, along with soil humic substances isolated from red soil and black soil, were fractionated into humic acid fractions (, HA, HA, and HA) and fulvic acid fractions (, FA, FA, and FA), respectively.
View Article and Find Full Text PDFSources and transport of organic matter in the Ganges-Brahmaputra-Meghna River system of Bengal Basin, Bangladesh.
Mar Pollut Bull
November 2024
Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
Article Synopsis
- * Findings show the OM is a mix from terrestrial plants, aquatic environments, and human activities, with the Brahmaputra having higher TOC and TN from C plants, while the Ganges shows lower TOC and higher anthropogenic inputs.
- * The research highlights the role of sediment grain size in relation to OM concentration, noting that finer sediments in the Brahmaputra correlate with higher OM levels, while the coarser Ganges sediments are linked to lower OM concentrations.
Optimizing electrocoagulation for poultry slaughterhouse wastewater treatment: a fuzzy axiomatic design approach.
Environ Sci Pollut Res Int
May 2024
Department of Environmental Engineering, Kocaeli University, 41001, Kocaeli, Turkey.
White meat consumption is increasing day by day, and accordingly, there is an increase in the amount of wastewater resulting from the processes. Today, the reuse of wastewater has become a goal within the scope of the Green Deal. For this reason, wastewater treatment with high pollution and volume has gained importance.
View Article and Find Full Text PDFThe influence of biochar from animal and plant on the transformation of phosphorus during paper mill sludge composting.
Environ Sci Pollut Res Int
April 2024
School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China.
Biochar has effect on phosphorus adsorption, release, and transformation. This study compared the influence of biochar derived from animal (AB) and plant (PB) during paper mill sludge composting. Results indicated AB not only accelerated sludge decomposition but also had significantly higher levels of available phosphorus (AP) than PB and CK (no biochar), with AP contents in the order of AB > PB > CK.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!