Molecules, Vol. 28, Pages 7280: Electrochemical Performance of Nitrogen Self-Doping Carbon Materials Prepared by Pyrolysis and Activation of Defatted Microalgae
In this study, two kinds of microalgae, Nanochloropsis and Chlorella, were used as feedstock for lipid extraction. The microalgae residue was firstly pyrolyzed at 500 °C to obtain biochar. Then, nitrogen-doped activated carbons were synthesized at an activation temperature of 700–900 °C with different ratios of biochar and KOH (1:1, 1:2, and 1:4). The obtained carbon materials presented rich nitrogen functional groups, including quaternary-N, pyridine-N-oxide, pyrrolic-N, and pyridinic-N. The nitrogen content of microalgae-based activated carbon material was up to 2.62%. The obtained m...
Source: Molecules - October 26, 2023 Category: Chemistry Authors: Xin Wang Lu Zuo Yi Wang Mengmeng Zhen Lianfei Xu Wenwen Kong Boxiong Shen Tags: Article Source Type: research
The impact of light/dark regimes on structure and physiology of Chlorella vulgaris biofilms
IntroductionBiofilm-based microalgae production technologies offer enormous potential for improving sustainability and productivity. However, the light pattern induced by these technologies is a key concern for optimization.MethodsIn this work, the effects of light/dark cycles on architecture, growth, and physiology of Chlorella vulgaris biofilms were assessed in a millifluidic flow-cell with different time cycles (15 s to 3 min) keeping the average light constant at 100 μmol·m−2·s−1.Results and discussionResults showed that photoinhibition can be mitigated by applying a light fraction of 1/3 and a cycle time of 15 ...
Source: Frontiers in Microbiology - October 24, 2023 Category: Microbiology Source Type: research
Bio-coatings in permeated cultivation systems: Unprecedented impacts on microalgal monoculture growth and organic matter yield
Environ Res. 2023 Oct 15:117403. doi: 10.1016/j.envres.2023.117403. Online ahead of print.ABSTRACTBio-coating, a recent and promising approach in attached microalgal cultivation systems, has garnered attention due to its efficiency in enhancing immobilized algal growth, particularly in submerged cultivation systems. However, when the cells are cultured on thin solid microporous substrates that physically separate them from the nutrient medium, it remains unclear whether the applied bio-coatings still have a significant impact on algal growth or the subsequent rates of algal organic matter (AOM) release. Therefore, this cur...
Source: Cell Research - October 17, 2023 Category: Cytology Authors: C Y Tong Chai Ying Kee Kohsuke Honda C J C Derek Source Type: research
Bio-coatings in permeated cultivation systems: Unprecedented impacts on microalgal monoculture growth and organic matter yield
Environ Res. 2023 Oct 15:117403. doi: 10.1016/j.envres.2023.117403. Online ahead of print.ABSTRACTBio-coating, a recent and promising approach in attached microalgal cultivation systems, has garnered attention due to its efficiency in enhancing immobilized algal growth, particularly in submerged cultivation systems. However, when the cells are cultured on thin solid microporous substrates that physically separate them from the nutrient medium, it remains unclear whether the applied bio-coatings still have a significant impact on algal growth or the subsequent rates of algal organic matter (AOM) release. Therefore, this cur...
Source: Environmental Research - October 17, 2023 Category: Environmental Health Authors: C Y Tong Chai Ying Kee Kohsuke Honda C J C Derek Source Type: research
Effects of phytohormone on Chlorella vulgaris grown in wastewater-flue gas: C/N/S fixation, wastewater treatment and metabolome analysis
Chemosphere. 2023 Oct 14:140398. doi: 10.1016/j.chemosphere.2023.140398. Online ahead of print.ABSTRACTChlorella vulgaris (C. vulgaris) can provide the means to fix CO2 from complicated flue gas, treat wastewater and reach a sustainable production of petrochemical substitutes simultaneously. However, a prerequisite to achieving this goal is to promote C. vulgaris growth and improve the CO2-to-fatty acids conversion efficiency under different conditions of flue gas and wastewater. Thus, the addition of indole-3-acetic acid (IAA) in C. vulgaris cultivation was proposed. Results showed that C. vulgaris were more easily inhibi...
Source: Chemosphere - October 16, 2023 Category: Chemistry Authors: Wenwen Kong Shilin Shi Denghui Peng Shuo Feng Lianfei Xu Xin Wang Boxiong Shen Yonghong Bi Honghong Lyu Source Type: research
Effects of phytohormone on Chlorella vulgaris grown in wastewater-flue gas: C/N/S fixation, wastewater treatment and metabolome analysis
Chemosphere. 2023 Oct 14:140398. doi: 10.1016/j.chemosphere.2023.140398. Online ahead of print.ABSTRACTChlorella vulgaris (C. vulgaris) can provide the means to fix CO2 from complicated flue gas, treat wastewater and reach a sustainable production of petrochemical substitutes simultaneously. However, a prerequisite to achieving this goal is to promote C. vulgaris growth and improve the CO2-to-fatty acids conversion efficiency under different conditions of flue gas and wastewater. Thus, the addition of indole-3-acetic acid (IAA) in C. vulgaris cultivation was proposed. Results showed that C. vulgaris were more easily inhibi...
Source: Chemosphere - October 16, 2023 Category: Chemistry Authors: Wenwen Kong Shilin Shi Denghui Peng Shuo Feng Lianfei Xu Xin Wang Boxiong Shen Yonghong Bi Honghong Lyu Source Type: research
Effects of phytohormone on Chlorella vulgaris grown in wastewater-flue gas: C/N/S fixation, wastewater treatment and metabolome analysis
Chemosphere. 2023 Oct 14:140398. doi: 10.1016/j.chemosphere.2023.140398. Online ahead of print.ABSTRACTChlorella vulgaris (C. vulgaris) can provide the means to fix CO2 from complicated flue gas, treat wastewater and reach a sustainable production of petrochemical substitutes simultaneously. However, a prerequisite to achieving this goal is to promote C. vulgaris growth and improve the CO2-to-fatty acids conversion efficiency under different conditions of flue gas and wastewater. Thus, the addition of indole-3-acetic acid (IAA) in C. vulgaris cultivation was proposed. Results showed that C. vulgaris were more easily inhibi...
Source: Chemosphere - October 16, 2023 Category: Chemistry Authors: Wenwen Kong Shilin Shi Denghui Peng Shuo Feng Lianfei Xu Xin Wang Boxiong Shen Yonghong Bi Honghong Lyu Source Type: research
Effect of different inocula on the granulation process, reactor performance and biodiesel production of algal-bacterial granular sludge (ABGS) under low aeration conditions
Chemosphere. 2023 Oct 13:140391. doi: 10.1016/j.chemosphere.2023.140391. Online ahead of print.ABSTRACTThe algal-bacterial granular sludge (ABGS) system is a prospective wastewater treatment technology, but few studies focused on the effects of different inoculum types on the establishment of the ABGS system under low aeration conditions (step-decrease superficial gas velocity from 1.4 to 0.5 cm/s). Results from this study indicated that compared with other inocula, the ABGS formed by co-inoculating aerobic granular sludge (AGS) and targeted algae (Chlorella) exhibited a shorter granulation period (shortened by 15 days), h...
Source: Chemosphere - October 15, 2023 Category: Chemistry Authors: Bing Zhang Jinyu Shi Wenxin Shi Yuan Guo Piet N L Lens Bing Zhang Source Type: research
Effect of different inocula on the granulation process, reactor performance and biodiesel production of algal-bacterial granular sludge (ABGS) under low aeration conditions
Chemosphere. 2023 Oct 13:140391. doi: 10.1016/j.chemosphere.2023.140391. Online ahead of print.ABSTRACTThe algal-bacterial granular sludge (ABGS) system is a prospective wastewater treatment technology, but few studies focused on the effects of different inoculum types on the establishment of the ABGS system under low aeration conditions (step-decrease superficial gas velocity from 1.4 to 0.5 cm/s). Results from this study indicated that compared with other inocula, the ABGS formed by co-inoculating aerobic granular sludge (AGS) and targeted algae (Chlorella) exhibited a shorter granulation period (shortened by 15 days), h...
Source: Chemosphere - October 15, 2023 Category: Chemistry Authors: Bing Zhang Jinyu Shi Wenxin Shi Yuan Guo Piet N L Lens Bing Zhang Source Type: research
Effect of different inocula on the granulation process, reactor performance and biodiesel production of algal-bacterial granular sludge (ABGS) under low aeration conditions
Chemosphere. 2023 Oct 13:140391. doi: 10.1016/j.chemosphere.2023.140391. Online ahead of print.ABSTRACTThe algal-bacterial granular sludge (ABGS) system is a prospective wastewater treatment technology, but few studies focused on the effects of different inoculum types on the establishment of the ABGS system under low aeration conditions (step-decrease superficial gas velocity from 1.4 to 0.5 cm/s). Results from this study indicated that compared with other inocula, the ABGS formed by co-inoculating aerobic granular sludge (AGS) and targeted algae (Chlorella) exhibited a shorter granulation period (shortened by 15 days), h...
Source: Chemosphere - October 15, 2023 Category: Chemistry Authors: Bing Zhang Jinyu Shi Wenxin Shi Yuan Guo Piet N L Lens Bing Zhang Source Type: research
Effect of different inocula on the granulation process, reactor performance and biodiesel production of algal-bacterial granular sludge (ABGS) under low aeration conditions
Chemosphere. 2023 Oct 13:140391. doi: 10.1016/j.chemosphere.2023.140391. Online ahead of print.ABSTRACTThe algal-bacterial granular sludge (ABGS) system is a prospective wastewater treatment technology, but few studies focused on the effects of different inoculum types on the establishment of the ABGS system under low aeration conditions (step-decrease superficial gas velocity from 1.4 to 0.5 cm/s). Results from this study indicated that compared with other inocula, the ABGS formed by co-inoculating aerobic granular sludge (AGS) and targeted algae (Chlorella) exhibited a shorter granulation period (shortened by 15 days), h...
Source: Chemosphere - October 15, 2023 Category: Chemistry Authors: Bing Zhang Jinyu Shi Wenxin Shi Yuan Guo Piet N L Lens Bing Zhang Source Type: research
Responses of Chlorella vulgaris to the native bacteria in real wastewater: Improvement in wastewater treatment and lipid production
Environ Pollut. 2023 Oct 12:122737. doi: 10.1016/j.envpol.2023.122737. Online ahead of print.ABSTRACTAlga-bacterium interaction can improve wastewater treatment efficiency. To unravel the mystery of the interaction between microalgae and bacteria in wastewater, mono-cultures and co-cultures of Chlorella vulgaris and native bacteria in pretreated biochemical wastewater from landfill leachate were investigated. The results showed that the microalgae selected dominant commensal bacteria, creating a further reduction in species richness for the co-culture, which in turn aids in the dominant commensal bacteria's survival, there...
Source: Environmental Pollution - October 14, 2023 Category: Environmental Health Authors: Lijie Zhang Bo Wang Libin Zhang Lu Lian Xiaoxiang Cheng Zhigang Yang Yan Jin Junren Chen Zian Ren Yuejun Qi Feiyong Chen Daoji Wu Lin Wang Source Type: research
Microwave irradiation pretreated fermentation of bioethanol production from Chlorella vulgaris Biomasses: Comparative analysis of response surface methodology and artificial neural network techniques
This study used RSM and ANN to optimize bioethanol production. The study predicted bioethanol yield using three factors: fermentation duration (12-36 h), temperature (28-32 °C), and inoculum concentration (0.5-1.5 g/L). The highest bioethanol yield was achieved using fermentation conditions of 36 h, 30 °C temperature, and 1.5 g/L inoculum concentration. The ANN model predicted the best ethanol output compared to the RSM model. The leftover biomass from biofuel synthesis was characterized for its potential for other energy production. The current study examined the feasibility of employing biomass in an environmentally su...
Source: Bioresource Technology - October 13, 2023 Category: Biotechnology Authors: V Shenbagamuthuraman Nanthagopal Kasianantham Source Type: research
Multi-omics insights into the mechanism of the high-temperature tolerance in a thermotolerant Chlorella sorokiniana
Bioresour Technol. 2023 Oct 11:129859. doi: 10.1016/j.biortech.2023.129859. Online ahead of print.ABSTRACTImproving high-temperature tolerance of microalgae is crucial to enhance the robustness and economy of microalgae industrial production. Herein, a continuous adaptive laboratory evolution (ALE) system was developed to generate the thermotolerant strain of Chlorella sorokiniana. The resulting thermotolerant strain TR42 exhibited excellent cell growth and biomass production at 42 °C, the temperature that the original strain (OS) could not survive. The high-temperature resistant mechanism of TR42 was investigated by inte...
Source: Bioresource Technology - October 13, 2023 Category: Biotechnology Authors: Kejing Song Zhenzhen Zhou Yaxin Huang Lin Chen Wei Cong Source Type: research
Molecules, Vol. 28, Pages 7059: Novel Strigolactone Mimics That Modulate Photosynthesis and Biomass Accumulation in Chlorella sorokiniana
ulescu
Oancea
In terrestrial plants, strigolactones act as multifunctional endo- and exo-signals. On microalgae, the strigolactones determine akin effects: induce symbiosis formation with fungi and bacteria and enhance photosynthesis efficiency and accumulation of biomass. This work aims to synthesize and identify strigolactone mimics that promote photosynthesis and biomass accumulation in microalgae with biotechnological potential. Novel strigolactone mimics easily accessible in significant amounts were prepared and fully characterized. The first two novel compounds contain 3,5-disubstituted aryloxy moieties connec...
Source: Molecules - October 12, 2023 Category: Chemistry Authors: Popa Georgescu Dumitrascu Shova Constantinescu-Aruxandei Draghici Vladulescu Oancea Tags: Article Source Type: research
