Review
Microbiology
Shiqiu Zhang, Lijie Zhang, Geng Xu, Fei Li, Xiaokang Li
Summary: This review introduces the basic characteristics and application fields of microalgae and discusses the influencing parameters and recent advanced technologies for microalgae biodiesel production. It aims to provide useful information to help future development of efficient and commercially viable technology for microalgae-based biodiesel production.
FRONTIERS IN MICROBIOLOGY
(2022)
Review
Environmental Sciences
Ayusmita Ray, Manoranjan Nayak, Amit Ghosh
Summary: Microalgae-based biofuels are recognized globally as environmentally friendly and economically viable options, with the ability to extract high value-added compounds. Co-cultivation practices help enhance biomass productivity and commercialization, contributing to the advancement of microalgal fuel technologies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agricultural Engineering
Anil Kumar Patel, Akash Pralhad Vadrale, Yi-Sheng Tseng, Chiu-Wen Chen, Cheng-Di Dong, Reeta Rani Singhania
Summary: A bioprospecting study was conducted in Taiwan to isolate a potential lutein-producing strain and optimize the cultivation and extraction conditions. The chosen strain, Chlorella sorokiniana Kh12, showed high yields of lutein and lipid production. The results suggest that this strain has potential for commercial production of lutein and lipid.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
M. Mofijur, S. M. Ashrafur Rahman, Luong N. Nguyen, T. M. Mahlia, L. D. Nghiem
Summary: The study developed and applied the PROMETHEE-GAIA method to select microalgae strains for aviation fuel production, with Chlorella sp. NT8a identified as the most suitable strain. However, unmodified biofuel from the chosen strain did not meet all jet fuel standards, highlighting the need for processing or modification of biofuels and revision of jet fuel standards to introduce microalgae-based biofuels into the aviation industry.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
S. M. Zakir Hossain, N. Sultana, M. M. Hossain, S. A. Razzak
Summary: This study investigated the effects of light-dark cycles and NaNO3 dose on Chlorella kessleri microalgal-specific growth rate, biomass productivity, and intracellular lipid productivity. The results of single-objective and multi-response optimization showed the maximum achievable values and the optimal culture conditions for the production of lipid from microalgae. The use of central composite design with desirability function was proven to be useful in designing and operating photobioreactors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Tengsheng Qiao, Yongteng Zhao, Benyong Han, Tao Li, Peng Zhao, Jun-Wei Xu, Li Huang, Xuya Yu
Summary: MI treatment significantly enhanced lipid production and nutrients removal of Monoraphidium sp. QLY-1 from molasses wastewater, by regulating key lipogenic genes expression and enhancing phytohormones contents.
Review
Chemistry, Multidisciplinary
Sze Ying Lee, Ianatul Khoiroh, Dai-Viet N. Vo, P. Senthil Kumar, Pau Loke Show
Summary: This review focuses on the importance of lipid extraction and key technologies in microalgae biofuel production, proposing strategies to enhance yield.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Agricultural Engineering
Zi-Yan Yang, Feng Gao, Jun-Zhi Liu, Jin-Sheng Yang, Mei Liu, Ya-Ming Ge, Dong-Zhi Chen, Jian-Meng Chen
Summary: Saline wastewater was found to improve the sedimentation and lipid production of freshwater microalgae. A salinity of 0.5% or above effectively promoted the settling of microalgae and reduced algal biomass in the effluent. The mechanism behind this improvement involved changes in zeta potential, cell particle size, and extracellular polymeric substance synthesis, which varied with the influent salinity.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Feng Gao, Xuan-Long Zhang, Chang-Jian Zhu, Ke-Hao Huang, Qiang Liu
Summary: This study investigated the effect of seawater addition on the precipitation performance and biofuel production of freshwater microalgae. The results showed that the addition of seawater improved the sedimentation performance and lipid content of the microalgae. The highest algal lipid productivity was achieved in wastewater containing 60% seawater. Seawater addition increased cell diameter, reduced zeta potential, and promoted the synthesis of extracellular polymeric substances, improving the precipitation performance of the microalgae cells. Glutathione peroxidase played a role in removing reactive oxygen species produced by seawater stress. This research provides valuable insights for optimizing microalgae biofuel production.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Food Science & Technology
Gabriela Filipini Ferreira, Jose Gabriel Barreto Pessoa, Luisa Fernanda Rios Pinto, Rubens Maciel Filho, Leonardo Vasconcelos Fregolente
Summary: Microalgal oils are being explored as a potential alternative feedstock for the production of glycerolipids such as MAGs and DAGs due to their high nutritional value and environmental advantages. While biodiesel remains a common application for microalgal lipids, the study highlights the potential for producing higher-value products like food emulsifiers from this source.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Laila Dina Amalia Purba, Fatin Syahirah Othman, Ali Yuzir, Shaza Eva Mohamad, Koji Iwamoto, Norhayati Abdullah, Kazuya Shimizu, Joni Hermana
Summary: This study investigated the cultivation of isolated microalgae strains using municipal wastewater and found that Desmodesmus maximus CN06 had the highest growth rate and efficient nutrient removal. Acutodesmus obliquus CN01 showed the fastest total phosphorus removal, while D. maximus CN06 had the highest lipid productivity and potential for biodiesel production.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Agricultural Engineering
Zi-Yan Yang, Kai-Xuan Huang, Yu-Ru Zhang, Lei Yang, Jin-Long Zhou, Qiao Yang, Feng Gao
Summary: A novel method of coupling phytohormones with saline wastewater was proposed to enhance microalgal lipid production. All six phytohormones effectively promoted microalgae growth and increased lipid content under salt stress, resulting in a significant increase in microalgal lipid productivity. Among the phytohormones, abscisic acid had the most prominent promoting effect. Synergistic effect of 20 g/L salt and 20 mg/L abscisic acid led to a 3.7-fold increase in microalgal lipid productivity compared to the control. Transcriptome analysis revealed that differentially expressed genes (DEGs) in microalgae were mainly up-regulated by phytohormones, except brassinolide. Common DEGs analysis showed that phytohormones regulated genes related to DNA repair and substance synthesis. In conclusion, the synergistic effect of salt stress and phytohormones greatly improves microalgal lipid production efficiency.
BIORESOURCE TECHNOLOGY
(2023)
Article
Energy & Fuels
Zeynep Busra Cakir, Hilal Yilmaz, Fatma Ertan, Aziz Tanriseven, Melek Ozkan
Summary: This study demonstrates the successful use of carrot pomace as the sole carbon and nutrient source for heterotrophic cultivation of A. protothecoides. Addition of glucose further improves lipid production and triacylglycerol content, at a lower cost compared to a completely synthetic growth medium.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Agricultural Engineering
Jia-Yi Lin, I-Son Ng
Summary: This study used genetic engineering to enhance the growth, lipid and lutein production of Chlamydomonas reinhardtii. CRISPRi was applied to down-regulate the phosphoenolpyruvate carboxylase (PEPC1) gene, resulting in increased carbon flux towards lipid synthesis. The engineered strain PGi showed the highest biomass, lipid and lutein production at 35°C.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Pfano Musetsho, Nirmal Renuka, Abhishek Guldhe, Poonam Singh, Kriveshin Pillay, Ismail Rawat, Faizal Bux
Summary: Microalgae such as Acutodesmus obliquus show potential for lipid production for biodiesel application, with poultry litter and municipal wastewater as nutrient sources. Pre-treated poultry litter extract (PPLE) resulted in higher biomass production and nutrient removal compared to raw poultry litter extract (RPPE). The use of lipid extracted biomass (LEA) as fertilizer for mung bean crops showed improvements in plant growth and soil microbial activity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Francisco de Borja Ojembarrena, Elena Fuente, Angeles Blanco, Carlos Negro
Summary: Accumulation of Cr(VI) in industrial fiber cement process water can affect product quality and health, and it needs to be removed to avoid environmental risks. The study found that cationic cellulose nanocrystals (CCNCs) have higher adsorption efficiency and lower cost compared to conventional adsorbents.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Review
Engineering, Environmental
Shentan Liu, Yangchen Zhang, Xiaojuan Feng, Sang-Hyun Pyo
Summary: This paper summarizes the common problems of constructed wetlands (CWs) and proposes corresponding optimized solutions, including thermal insulation and additional aeration in cold climates, choosing suitable plant species and planting patterns to enhance phytoremediation in CWs, using various methods to monitor and evaluate CW clogging, implementing anti-clogging measures, controlling greenhouse gas emissions during CW treatment, constructing and utilizing CW databases, designing appropriate CW types, and implementing strict technical management and supervision.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Norzila Mohd, Nazlina Haiza Mohd Yasin, Wan Hasnidah Wan Osman, Mohd Sobri Takriff
Summary: This study demonstrates that Chlamydomonas sp. is effective in removing nutrients from palm oil mill effluent and shows particular efficiency in the removal of ammonium and phosphate.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Mingzhen Zhang, Guijian Liu, Ruijia Liu, Jinzhao Xu, Wen Si, Yong Wei
Summary: Tieguanyin tea stem was used to synthesize modified biochar for the adsorption of copper and zinc. Among the modified biochar, Fe-BCs had the highest adsorption capacity, with Fe-BC650 being the best adsorbent. It reached adsorption equilibrium in 1 minute and had a maximum adsorption capacity of 303.5996 mg/g for Cu (II) and 254.0711 mg/g for Zn (II) in single-metal solutions. However, there were antagonistic impacts between Cu2+ and Zn2+.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Lingling Zhao, Qiaoshu Zhou, Yun Yang, Yuan Zhang, Yewei Qiu, Yanjun Chen, Xian Jin, Xiangjun Yang, Shixiong Wang
Summary: This research presents a method for selectively recovering gold from e-waste water using metal sulfides microspheres prepared by hydrothermal technique. The results show that the assistance of visible light significantly improves the gold adsorption performance of metal sulfides. The metal sulfides exhibit excellent gold adsorption properties, high selectivity, ultra-high adsorption capacity, and good recyclability.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Laishram Saya, W. Rameshwor Singh, Sunita Hooda
Summary: Organic-inorganic nanoblends, such as polysaccharide-blended-inorganic ones, have versatile applications and have gained significant research attention. In this study, a magnetic guar gum/graphene oxide nanocomposite blended with CuO was successfully prepared and investigated for its adsorption capacity for ciprofloxacin removal. The results showed that the nanocomposite exhibited excellent adsorption capacity and the adsorption process was spontaneous.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Umit Ecer, Sakir Yilmaz
Summary: A novel and effective catalyst Co@MIL-68(Fe)@Fe3O4@CM-BC was synthesized and used for the catalytic reduction of crystal violet in aqueous environments. The catalyst showed high efficiency in degrading crystal violet under specific conditions, and exhibited good regeneration performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Chi Zhang, Miao Zhang, Haohan Yang, Wei Cai, Jun Wu
Summary: Enhancing the bioaugmentation of common nitrifiers in the partial nitrification/anammox process can decrease the activity of nitrite oxidizing bacteria and increase the activity of anammox bacteria, leading to improved total nitrogen removal efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Runzhang Zuo, Dajun Ren, Yangfan Deng, Canhui Song, Yubin Yu, Xiejuan Lu, Feixiang Zan, Xiaohui Wu
Summary: This study found that fine bubble aeration in membrane bioreactors (MBR) can better control membrane fouling and reduce energy consumption. However, compared to fine bubble aeration, coarse bubble aeration released more proteins and polysaccharides, resulting in a decrease in functional bacteria and enzymes involved in nitrogen and phosphorus pathways.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Ch Tahir Mehmood, Jiekai Dai, Hanjun Zhao, Ziyi Zhong
Summary: Wirelessly powered photocatalyst-coated spheres (WPS) have been developed and demonstrated for various applications, including photodegradation and fouling control. These WPS are cost-effective, easy to fabricate, and have excellent visible light sources, making them suitable as carriers for photocatalysts.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Yifan Wang, Xiaoxuan Kang, Yuting Li, Ruyi Li, Chang Wu, Luyao Wang, Chongqing Wang, Tao Yang, Ming Ge, Zhangxing He
Summary: Cobalt/carbon nanofibers (Co/CNF) were prepared and exhibited excellent catalytic activity in the degradation of tetracycline by activating peroxodisulfate (PDS). The effects of process parameters on tetracycline removal were studied, and the reaction mechanism was confirmed through experiments.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Ting Wei, Yaqian Zhao, Jia Guo, Bin Ji, Alvaro Pun Garcia, Abraham Esteve Nunez
Summary: This study developed a novel lightweight substrate (Al-NLS) composed of aluminum sludge and polyurethane, and investigated its effectiveness in constructed wetlands (CWs). Results showed that Al-NLS had favorable adsorption capacities for phosphorus and removal efficiencies for pollutants in real domestic wastewater. It also positively influenced the microbial community. Therefore, Al-NLS can be considered as a new alternative substrate in CWs technology.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Dabojani Das, Achinta Bordoloi, Heyang Yuan, Daniel J. Caldwell, Rominder P. S. Suri
Summary: This study evaluates the degradation kinetics of antibiotic resistance genes and mobile genetic elements in water matrices by ozone treatment. The results show that extracellular antibiotic resistance genes can be effectively removed, while intracellular genes are more resistant to degradation. The impact of wastewater matrix on gene degradation is minimal.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)