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
Energy & Fuels
Jessica Martin, George P. P. Philippidis
Summary: The study found that using agricultural residues as cheap and sustainable sources of fermentable carbohydrates can increase biomass and product yields of microalgae. By cultivating Chlorella vulgaris in the hydrolysate of Brassica carinata residue, the algae showed higher lipid and lutein productivity compared to expensive commercial media. Time course studies revealed the effect of culture medium on lipid and lutein biosynthesis, and the fatty acid profile looked promising for biodiesel production. Inexpensive hydrolysate may be a viable alternative for algae cultivation.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biotechnology & Applied Microbiology
R. Derya Gelgor, Duygu Ozcelik, Berat Zeki Haznedaroglu
Summary: This study investigated the effects of baking on Chlorella vulgaris, and the results showed that the baking process had minimal impact on the main biochemical components and water-soluble vitamins of Chlorella vulgaris. Therefore, Chlorella vulgaris can be considered as an additive for functional food recipes with short baking durations.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
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
Engineering, Chemical
Hao-Cheng Yu, Chyi-How Lay, Peer Mohamed Abdul, Jane-Yii Wu
Summary: This study optimized the cultivation conditions for a local microalgae species, Chlorella sp. G3H3-1-2, with high pH-resistant, high growth rate, and high lipid content. It was found that a pH range of 6.0 to 8.0 with glucose as the carbon source resulted in the highest specific growth rate of 1.22 day(-1) for Chlorella sp. G3H3-1-2. However, the highest total FAMEs content of 59% in the biomass of 1.75 g/L was obtained when using the combination of glucose and (NH4)2SO4 at a high pH value of 10.
Article
Green & Sustainable Science & Technology
Ke Miao, Xunzhou Li, Liang Guo, Mengchun Gao, Yangguo Zhao, Chunji Jin, Junyuan Ji, Zonglian She
Summary: The study found that Chlorella pyrenoidosa can utilize different forms of phosphorus to sustain its growth and affect the synthesis of biochemical components. In mixotrophic cultivation, phosphorus is mainly stored in intracellular phosphorus pools, while in photoautotrophic cultivation, excess phosphorus is quickly absorbed and released. G-6-P enhances AKP activity and promotes organic phosphorus hydrolysis.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Yifan Xing, Liang Guo, Yu Wang, Chunji Jin, Mengchun Gao, Yangguo Zhao, Zonglian She
Summary: This study showed that Chlorella vulgaris had the highest phosphorus uptake and transformation efficiency under a light intensity of 5000 Lux. EPS was found to be the main phosphorus pool. The findings are significant for utilizing microalgae in phosphorus recovery and wastewater treatment.
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
Environmental Sciences
G. Katircioglu Sinmaz, B. Erden, I. A. Sengil
Summary: In recent years, there has been a growing importance in turning to alternative and renewable energy sources due to increasing greenhouse gases and climate crises. This study aimed to cultivate Chlorella vulgaris using poultry slaughterhouse wastewater, which has high ammonium and phosphate content, for biodiesel production while simultaneously treating the wastewater. The experiment resulted in the best growth performance of C. vulgaris at pH 10.5 in the treated water.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Rajamanickam Ricky, Fulvia Chiampo, Subramaniam Shanthakumar
Summary: In this study, the growth and biochemical composition of Chlorella vulgaris under antibiotic stress were investigated. The results showed that C. vulgaris can adapt to antibiotic contamination and remove CIP and AMX, while increasing the production of valuable biomass.
BIOENGINEERING-BASEL
(2022)
Article
Agricultural Engineering
Hutao Wang, Caiye Hu, Yi Wang, Chunji Jin, Zonglian She, Liang Guo
Summary: This study investigated the effects of SDZ on the growth, photosynthesis, cellular damage, antioxidant capacity, and intracellular biochemical components of Chlorella pyrenoidosa. The results showed that SDZ inhibited the growth of C. pyrenoidosa but had little impact on photosynthesis. SDZ stress also increased the lipid and carbohydrate content of C. pyrenoidosa, improving its biodiesel quality.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Dian Xie, Xiaowei Ji, Youcai Zhou, Jingxuan Dai, Yongjin He, Han Sun, Zheng Guo, Yi Yang, Xing Zheng, Bilian Chen
Summary: This study investigated the treatment of real swine wastewater using indigenous Chlorella vulgaris MBFJNU-1 and the production of sustainable biodiesel through direct enzymatic transesterification of the resulting lipids from the wet biomass. The results showed that C. vulgaris MBFJNU-1 achieved higher microalgal biomass, fatty acids content, CO2 biofixation, lipid productivities, and nutrients removal compared to the control group. Enzymatic transesterification of wet disrupted Chlorella biomass with lipase TL and phospholipase PLA resulted in high biodiesel conversion rates.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Hyun-Sik Yun, Young-Saeng Kim, Ho-Sung Yoon
Summary: The study found that the addition of glucose under mixotrophic conditions improved biomass yield and the content of useful substances in microalgae. Optimal cultivation results were obtained when 15-20 g L-1 initial glucose was provided under mixotrophic conditions.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Pengtao Gao, Liang Guo, Mengchun Gao, Yangguo Zhao, Chunji Jin, Zonglian She
Summary: The study revealed that light intensity variation can affect the biofuel generation and carbon assimilation of mixotrophic microalgae. The optimal light intensity for Chlorella vulgaris growth was identified, and the impact of light intensity on the accumulation of proteins, carbohydrates, and lipids was documented. Different combinations of carbon sources were found to have varying effects on biomass production enhancement.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Biotechnology & Applied Microbiology
Liang Yu, Tingting Li, Jingwei Ma, Quanbao Zhao, Pierre Wensel, Jieni Lian, Shulin Chen
Summary: In this study, a growth model was developed and validated to predict the growth and lipid accumulation rates of Chlorella sorokiniana under heterotrophic and mixotrophic conditions. The model confirmed that better growth performance and higher lipid production are achieved under mixotrophic conditions compared to heterotrophic conditions.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Environmental Sciences
Kunyang Su, Mingming Song, Ze Yu, Chen Wang, Jing Sun, Xue Li, Na Liu, Yiwen Mou, Tianxiang Lu
Summary: By utilizing VFAs derived from activated sludge, oleaginous microalgae were effectively used to produce biodiesel and remove total nitrogen and phosphorus from wastewater. Different microalgae species showed varied lipid content and growth rates under different VFAs ratios, highlighting the importance of acetic acid assimilation efficiency for algal growth and lipid accumulation.
Article
Environmental Sciences
Kunyang Su, Xue Li, Tianxiang Lu, Yiwen Mou, Na Liu, Mingming Song, Ze Yu
Summary: In this study, a suitable Chlorella sorokiniana strain for heterotrophic cultivation using volatile fatty acids (VFAs) waste carbon source was selected and its potential for acid-producing wastewater utilization was investigated. The results showed that microalgae had high nutrient removal efficiency and lipid production when utilizing acid-producing wastewater, indicating a promising way to couple wastewater treatment with biomass production for microalgae lipid production sustainability.
Article
Environmental Sciences
Xue Li, Kunyang Su, Yiwen Mou, Na Liu, Tianxiang Lu, Ze Yu, Mingming Song
Summary: This study examined the effects of carbon source concentration and type on the algae-bacteria symbiosis system (ABS) and its removal efficiency of pollutants. It was found that under the condition of a C/N ratio of 30:1 and sodium acetate as the carbon source, the ABS showed the best removal of nitrogen, phosphorus, and COD, as well as the accumulation of biomass and lipids. By combining the ABS with monocultivation of algae (MAS), the wastewater from swine digestion effluent was treated to meet the Chinese discharge standards for livestock and poultry wastewater.
Article
Environmental Sciences
Yiwen Mou, Na Liu, Kunyang Su, Xue Li, Tianxiang Lu, Ze Yu, Mingming Song
Summary: Microalgal biodiesel production faces challenges of high cost and low yields. This study investigated the cultivation of Scenedesmus quadricauda FACHB-1297 fed on xylose under mixotrophic and heterotrophic conditions. The results showed that nitrogen starvation and phosphorus sufficiency led to the highest lipid content and production. Xylose utilization rate was higher in heterotrophic mode, while phosphorus uptake rate was higher in mixotrophic mode. Increasing phosphorus concentrations positively impacted microalgal lipid content under heterotrophic cultivation. This study suggests the importance of providing sufficient phosphorus for microalgal lipid production under xylose heterotrophic/mixotrophic condition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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)
