Article
Biotechnology & Applied Microbiology
Nahuel E. Casa, Julieta Lois-Milevicich, Paola Alvarez, Ricardo Mateucci, Marina de Escalada Pla
Summary: The batch production of Chlorella vulgaris using ricotta cheese whey as a growth media was evaluated. Different pre-treatment methods were tested, and tangential flow microfiltration showed the best performance. Macronutrient supplementation did not enhance the biomass production.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Food Science & Technology
Kangping Wu, Yilin Fang, Biyuan Hong, Yihui Cai, Honglei Xie, Yunpu Wang, Xian Cui, Zhigang Yu, Yuhuan Liu, Roger Ruan, Qi Zhang
Summary: This study demonstrates the feasibility and practicality of using sweet sorghum extract and its enzymatic hydrolysate as alternative carbon sources for the heterotrophic culture of Chlorella vulgaris. It helps to reduce the cultivation cost and improve product yield.
Article
Green & Sustainable Science & Technology
Sanosh Kunjalukkal Padmanabhan, Francesca Lionetto, Rossella Nisi, Mariangela Stoppa, Antonio Licciulli
Summary: In this study, an economical and environmentally friendly method for synthesizing bacterial cellulose (BC) using orange peel extract was evaluated. It was found that orange peel extract can be effectively used as a carbon source for BC production, resulting in BC with high crystallinity and nanofibrous structure. This suggests that orange peel extract can be a valuable resource for the production of high-value BC.
Article
Environmental Sciences
Narges Moradi-Kheibari, Hossein Ahmadzadeh, Stephen R. Lyon
Summary: This study investigated the changes in fatty acid profiles during the growth of Chlorella vulgaris and found that the quantity and type of fatty acids varied with different rates. Interchanging fatty acid profiles can provide complementary metabolic information. Oleic and linoleic acids were the major components of C. vulgaris, and palmitic and oleic acids remained at a constant concentration, suggesting that they may serve as precursors for longer-chain fatty acids.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Environmental
Xiurong Chen, Shanshan Wang, Xiaoli Sun, Quanling Lu
Summary: The study demonstrates that cultivating Chlorella vulgaris with activated sludge extracts can promote its growth and enhance photosynthesis. The carbon source in the sludge extract contributes to the accumulation of carbohydrates, which is significant for low-cost algae cultivation.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Cell Biology
Egle Sendzikiene, Violeta Makareviciene
Summary: Microalgae biomass is a viable feedstock for various industries and has potential in biofuel production. However, the cultivation of microalgae is energy-intensive and faces technical challenges. This study investigated the use of waste as a substitute for expensive nutrients, aiming to reduce the cultivation cost and improve biomass yield. Liquid waste and technical glycerol were used as nitrogen, phosphorus, and carbon sources, respectively, and their optimal concentrations were determined.
Article
Environmental Sciences
Wenwen Kong, Jia Kong, Jiao Ma, Honghong Lyu, Shuo Feng, Zhuozhi Wang, Peng Yuan, Boxiong Shen
Summary: Chlorella vulgaris shows promising potential in achieving biomass production, CO2 fixation, nutrients removal, and protein production under different CO2 gas and wastewater conditions. Results indicate that the addition of CO2 and ammonium can stimulate growth and enhance nutrient utilization efficiency in C. vulgaris.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Agricultural Engineering
Reetu, Aniruddha Jaiswal, Rajiv Prakash, Mike Clifford, Sarvajeet Singh Gill, Monika Prakash Rai
Summary: The use of photo-responsive nanomaterials as a substrate for microalgae can overcome the limitations of low biomass yield and lipid production, enhancing the economic viability of microalgae-derived biodiesel. This study investigated the potential of graphene oxide; graphitic carbon nitride (GO@CN) as a photocatalytic material for Chlorosarcinopsis sp. MAS04. Through characterization techniques and cytotoxicity assay, the optimal supplement of 50 mg L-1 GO@CN was found to significantly increase biomass and lipid production by 1.5-fold and 1.9-fold respectively, compared to the control. A cost-benefit analysis indicated a 350% increase in FAME yield at a slightly higher cost. This study suggests that the combination of nano-algal science could be a promising approach for sustainable microalgae-based biodiesel.
BIOMASS & BIOENERGY
(2023)
Article
Agricultural Engineering
Yihui Cai, Yuhuan Liu, Tongying Liu, Kaili Gao, Qi Zhang, Leipeng Cao, Yunpu Wang, Xiaodan Wu, Hongli Zheng, Hong Peng, Roger Ruan
Summary: This study found that using broken rice hydrolysate (BRH) as a carbon source for heterotrophic cultivation of Chlorella vulgaris can significantly reduce culture medium costs, while intermittently adding alkaline reagents and using Tris as a pH stabilizer can lead to increased biomass production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Su Fang Li, Chien Chih Wang, Behnam Taidi
Summary: Microalgae are potential candidates for capturing CO2 and producing biomass. The use of fed-batch culture mode can enhance algal growth rate and CO2 removal efficiency. Low levels of dissolved CO2 limit algal growth, while high levels inhibit it. Chlorella vulgaris grown with 1.62 g L-1 dCO2 showed the best growth performance and nutrient uptake rates.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Chieh-Lun Cheng, Yung-Chung Lo, Kai-Lou Huang, Dillirani Nagarajan, Chun-Yen Chen, Duu-Jong Lee, Jo-Shu Chang
Summary: This study evaluated the potential of microalgal carbohydrates and produced carbohydrates from CO2 and fatty acids using Chlorella vulgaris JSC-6 under different cultivation strategies. The results showed that autotrophic cultivation resulted in better carbon assimilation and carbohydrate accumulation, while the mixotrophic mode had the highest carbohydrate content.
BIORESOURCE TECHNOLOGY
(2022)
Article
Thermodynamics
Ritu Kamboj, Dhanya Ms
Summary: The study focused on biobutanol production using Clostridium acetobutylicum MTCC 11274 from potato peel waste in dilute orange peel extract at three concentrations. The addition of 60 g/L potato peel in orange peel extract significantly improved butanol yield, with butyric acid concentration closely correlated. Furthermore, D-limonene in orange peel extract did not inhibit the growth of Clostridium acetobutylicum MTCC 11274.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2021)
Article
Multidisciplinary Sciences
Neha Arora, George P. Philippidis
Summary: Supplementing cultivation media with exogenous carbon sources can enhance the biomass and lipid production in microalgae, while reducing costs and increasing sustainability. Developing a medium from sweet sorghum bagasse for cultivation of Chlorella under mixotrophic conditions can lead to optimal lipid productivity. Improved biomass and lipid content were observed in Chlorella cultivated in sweet sorghum bagasse hydrolysate under mixotrophic conditions, with a higher concentration of saturated and monounsaturated fatty acids suitable for biofuel manufacturing.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Qian Feng, Yabo Sun, An Li, Xiangang Lin, Tao Lu, Dan Ding, Menghan Shi, Yingqiang Sun, Yupeng Yuan
Summary: In the short term, low concentrations of g-C3N4 promote the growth of microalgae, but long-term use is harmful. The levels of protein and lipid fractions vary at different concentrations, and changes in antioxidant enzyme activity play a significant role in microalgae growth.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Energy & Fuels
MubarakAli Davoodbasha, Arivalagan Pugazhendhi, Jung-Wan Kim, Sang-Yul Lee, Thajuddin Nooruddin
Summary: The study achieved successful conversion of algal oil into biodiesel using CaO nanocatalyst, and optimized the process by adjusting reaction parameters and catalyst concentration.
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)