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
Biotechnology & Applied Microbiology
Jinli Zhang, Bo Huang, Tao Tang
Summary: This study aims to construct a microalgae and bacteria co-culture system for the removal of phenol from high-salt phenol wastewater and the accumulation of microalgae biomass. The results showed that the co-culture system had better performance in phenol degradation and microalgae growth compared to monocultures. Optimizing the conditions of the co-culture system further improved the degradation efficiency and biomass accumulation.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Bushra Chalermthai, Pongtorn Charoensuppanimit, Kasidit Nootong, Bradley D. Olsen, Suttichai Assabumrungrat
Summary: Concerns over plastic waste harming the environment have led to the search for alternatives, and microalgae has emerged as a potential source for bioplastic production. This study evaluates the large-scale co-production of Spirulina powder as food supplements and edible bioplastic for food packaging. The results show that this venture is attractive with a relatively short payback time and high return on investment, despite the high costs involved.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Takahiro Watari, Yoshiki Fukushima, Toru Miwa, Yuga Hirakata, Shuji Kawakami, Yoshinobu Nakamura, Masashi Hatamoto, Takashi Yamaguchi
Summary: The study demonstrated the effectiveness of microalgal-nitrifying bacteria consortia in treating ammonia with stable partial nitrification. The photo-baffled reactor created a competitive environment between Chlorella vulgaris and nitrifying bacteria, suggesting its potential as a novel partial nitrification process for post-treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Chemistry, Physical
Viviana Scognamiglio, Maria Teresa Giardi, Daniele Zappi, Eleftherios Touloupakis, Amina Antonacci
Summary: The diverse applications and potential of photosynthetic microorganisms are widely studied, especially in food, drug, and energy production. However, there are technical and economic issues in photosynthetic material production. Co-culturing photosynthetic microorganisms and bacteria may be a potential solution to these problems.
Review
Environmental Sciences
C. Y. Tong, Kohsuke Honda, C. J. C. Derek
Summary: Mass microalgal-bacterial co-cultures have emerged as a promising approach for optimizing high-value metabolite production in microalgae. However, the detailed mechanisms underlying the beneficial effects of bacteria on microalgal growth and metabolism are still limited. This review sheds light on the mutualistic interactions between bacteria and microalgae, focusing on the chemical exchange in the phycosphere. Various chemical mediators, such as photosynthetic oxygen, N-acyl-homoserine lactone, siderophore, and vitamin B12, were identified to elucidate the cascading effects of bacteria on microalgal metabolites. The review also discusses the application of bacterial-mediated cell autolysis and bio-flocculants for enhancing soluble microalgal metabolites and biomass harvesting. Additionally, it explores enzyme-based communication through metabolic engineering and provides recommendations for stimulating microalgal metabolite production. Incorporating the multifaceted role of beneficial bacteria will be crucial for the development of algal biotechnology.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Annika Weiss, Liselotte Schebek
Summary: The net energy ratio (NER) of microalgae biofuels relies on assumptions of operational energy demand and biomass yield, with high aeration rates hindering net energy output and low rates yielding the best NER. Further technological improvements can reduce the NER, while incomplete system boundaries or unrelated parameters may result in NER below one.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agricultural Engineering
Bancha Kumsiri, Jeeraporn Pekkoh, Wasu Pathom-aree, Saisamorn Lumyong, Kittiya Phinyo, Chayakorn Pumas, Sirasit Srinuanpan
Summary: The study proposes an innovative approach using actinomycetes co-culture with microalgae in biogas digestate effluent to enhance biomass and lipid production, providing a sustainable feedstock for biodiesel. The co-cultivation significantly increased biomass production, chlorophyll a content, and lipid productivity compared to microalgae monoculture, with accumulated lipids containing long-chain fatty acids suitable for biodiesel production. Overall, the actinomycete co-culture shows great potential for cost-effective and environmentally friendly microbial-based biofuel production.
BIORESOURCE TECHNOLOGY
(2021)
Review
Environmental Sciences
Lisa Aditya, T. M. Indra Mahlia, Luong N. Nguyen, Hang P. Vu, Long D. Nghiem
Summary: The review discusses the diversity of microalgae and bacteria and their potential as a consortium for efficient wastewater treatment and nutrient recovery. It emphasizes the use of microalgae biomass derived from wastewater as a renewable feedstock for various applications, and highlights the interactions and characteristics of microalgae in a consortium system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Chaofan Zhang, Shih-Hsin Ho, Anran Li, Liang Fu, Dandan Zhou
Summary: The study suggests that a microalgal co-culture strategy can resist competition stress from bacteria and improve lipid production. The growth inhibition in the co-culture system was significantly reduced, and lipid production was 20-79% higher than that in monocultures.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Yunheng Tang, Yun Huang, Wentian Gan, Ao Xia, Qiang Liao, Xianqing Zhu
Summary: Industrial production processes generate a large amount of inorganic carbon (CO/CO2), which can be used as a carbon substrate for gaseous fermentation to reduce environmental pollution and promote renewable energy. By continuously aerating mixed gases and rabbit feces into the culture, ethanol-producing strains can be enriched. After domestication with CO/CO2, the microbial community structure changed significantly, with ethanol-producing bacteria Blautia becoming dominant and leading to improved fermentation performance.
Article
Chemistry, Physical
Yongzhuo Liu, Jingjing Liu, Tao Wang, Xintao Zhang, Lingyun Wang, Xiude Hu, Qingjie Guo
Summary: The study demonstrates that chemical looping pyrolysis can significantly increase the heating value of bio-oils and achieve high hydrogen content in syngas production. Through the action of the oxygen carrier, the continuous transfer of oxygen from bio-oils to syngas is achieved, opening up a new pathway for the comprehensive utilization of biomass.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Shengnan Li, Fanghua Li, Xun Zhu, Qiang Liao, Jo-Shu Chang, Shih-Hsin Ho
Summary: This review explores the mechanisms and factors influencing biohydrogen production from microalgae, summarizes potential algal strains and hydrogen-producing enzymes, and discusses the most practical pathway for biohydrogen generation. It also highlights recent advancements and future perspectives in microalgae-based biohydrogen production.
Article
Agricultural Engineering
Dan Hu, Jiaxing Zhang, Ruoyu Chu, Zhihong Yin, Jiangjun Hu, Yohanes Kristianto Nugroho, Zhaohua Li, Liandong Zhu
Summary: The study found that landfill leachate with a 10% dilution rate was optimal for microalgae growth, showing higher biomass growth and nutrient removal efficiency. In this condition, co-culture microalgae demonstrated improved cell activity and nutrient utilization efficiency.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Junren Chen, Zian Ren, Zheng Li, Bo Wang, Yuejun Qi, Wenbao Yan, Qingqing Liu, Hengyu Song, Qingxiang Han, Lijie Zhang
Summary: Improving understanding of the interaction between algae and bacteria can enhance wastewater treatment. In this study, untreated marine biopharmaceutical wastewater containing native bacteria was used to culture microalgae, and the effect of native bacteria on microalgae growth was investigated. The results showed that native bacteria greatly promoted microalgae growth, leading to high biomass and lipid accumulation. This study provides a theoretical foundation for improving biopharmaceutical wastewater treatment.
Article
Biotechnology & Applied Microbiology
Yiran Qu, Innocent Bekard, Ben Hunt, Jamie Black, Louis Fabri, Sally L. Gras, Sandra. E. Kentish
Summary: This study compares the performance of a nanofiber device and a resin column for antibody capture. The nanofiber device has a larger housing volume and lower binding capacity, but comparable eluate purity to the resin column. It shows high stability, can be used for multiple cycles, and maintains consistent eluate quality when scaled up. The use of a single nanofiber device can significantly reduce costs compared to a resin column, especially when the number of batches is limited.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Brandon Moore, Christos Georgakis, Chris Antoniou, Sarwat Khattak
Summary: Fed-batch cell culture processes are commonly used in biomanufacturing due to their simplicity and applicability in cGMP environments. However, the challenge lies in the changing physiochemical conditions within the bioreactor as the cell density changes. Traditional response surface models (RSMs) are commonly used for optimization but are limited by their use of time-invariant factors. Dynamic RSM (DRSM) models can predict the time-dependent impact of process inputs, allowing for optimization of process operations that change over time.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Lin Li, Yunfan Bai, Chuhua Qi, Yile Du, Xiaoxiao Ma, Yutong Li, Pingping Wu, Shuangli Chen, Sijing Zhang
Summary: A succinic anhydride-modified apple pomace (SAMAP) was synthesized to address environmental issues caused by the accumulation of apple pomace and effectively treat heavy metal ions. SAMAP exhibited high adsorption capacity for Cu(II) and Pb(II), suggesting its potential application in wastewater treatment.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Peter Satzer
Summary: Water for injection (WFI) production in the biopharmaceutical industry consumes excessive amounts of water and energy. Recycling buffers can potentially save up to 90% of resources, but achieving the full theoretical potential is impossible when a risk-aware design is used. Universal risk-based assessment is important for regulatory authorities to consider the implementation of such a strategy.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Gaoya Sun, Lingkai Jin, Guangxue Wang, Xiaoge Wang, Jin Huang
Summary: In this study, heterologous expression and homologous overexpression of ABC transporter proteins AatA and MdlB were found to improve butyric acid production in C. tyrobutyricum. The overexpression of these proteins upregulated the expression levels of key enzymes in the acetate synthesis pathway and promoted the synthesis and secretion of acetic acid. Additionally, the increase in ATPase activity facilitated sugar utilization, induced extracellular secretion of acetate, and shortened fermentation periods.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Taiki Okamura, Rina Aritomi, Takuya Matsumoto, Ryosuke Yamada, Hidehiko Hirakawa, Hiroyasu Ogino
Summary: In this study, proline was introduced to improve the stability of putidaredoxin reductase (PdR) in the Pseudomonas putida cytochrome P450 system. It was found that PdR_T221P had a longer half-life at high temperatures compared to wild-type PdR, but a shorter half-life in the presence of methanol. Molecular dynamics simulations supported these findings.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Yuying Hu, Xiaofan Wang, Shihao Zhang, Zimu Liu, Tengfang Hu, Xin Wang, Xiaoming Peng, Hongling Dai, Jing Wu, Fengping Hu
Summary: This study investigates the effect of iron-carbon micro-electrolysis (ICME) materials on high-solid anaerobic digestion (HSAD). The results show that ICME materials promote methane production in HSAD by increasing the attachment area of microorganisms and facilitating symbiotic metabolism of certain bacterial species. This study provides new insights into microbial mechanisms and enhances our understanding of ICME material enhancement in HSAD.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Jibao Liu, Yufeng Xu, Yuansong Wei
Summary: This study investigated the role of sludge rheology in anaerobic digestion (AD) and found that rheological properties increased with the increase of solid content, resulting in a negative effect on methane production. An extended ADM1 model revealed that enhanced sludge rheological properties increased mass diffusion resistance and reduced uptake rate of acetate.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Xiaoyan Liu, Zongze Chen, Dewen Kong, Xinying Zhang, Chuanhua Wang, Yongqi Wang
Summary: This study explored the role of intracellular and extracellular enzymes of Acinetobacter baumannii and Talaromyces sp. in the degradation of crude oil. The extracellular enzymes of Talaromyces sp. were more effective in degrading n-alkanes, while those of Acinetobacter baumannii had a better effect on aromatic hydrocarbons. The degradation enzyme systems of both bacteria and fungi complemented each other, improving the overall degradation ability.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Jing Dong, Lingli Xu, Yuxiang Liu, Li Ren, Ke Yuan
Summary: The utilization of biochar-immobilized microorganisms is an effective method for eliminating phenol from water. The high susceptibility of bacteria to environmental factors is a challenge for practical implementation. In this study, biochar was used to reduce microbial susceptibility and enhance phenol removal. The addition of biochar altered the dominant species of phenol-degrading bacteria and response surface analysis indicated the significant influence of biochar pyrolysis temperature and experimental temperature on phenol removal rate.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Zibin Pan, Mengying Liu, Zuliang Chen
Summary: This study successfully removed metalloids and heavy metals from acid mine drainage (AMD) using bio-synthesized Fe/Cu nanoparticles (Fe/Cu NPs). The Fe/Cu NPs showed high removal capacities and the presence of organic substances contributed to their stability.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Guangbing Liu, Han Zhang, Jincan Huang, Lu Zhang, Teng Zhang, Xuemin Yu, Weijing Liu, Chunkai Huang
Summary: This study investigated the effect of Fenton pre-treatment on the treatment efficiency of printing and dyeing wastewater (PDW) using two anaerobic/aerobic-membrane bioreactors (A/O-MBRs). The results showed that Fenton pre-treatment significantly improved the removal efficiency of COD and AOX in PDW, and reduced membrane fouling. The Shannon indices and metagenomics analysis indicated that the microbial diversity in anaerobic flocs was higher than that in aerobic flocs, and EC3.1.1.45 and pcaI were identified as key functional genes.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Lidia Borgosz, Duygu Dikicioglu
Summary: The Industrial Internet of Things (IIoT) is a system that connects devices and provides real-time insight into industrial processes. However, the complexity and regulatory requirements of the biomanufacturing sector make it challenging to implement IIoT. There is a need for universal solutions to overcome this challenge and advance the field of biomanufacturing.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Yajie Li, Weikang Kong, Yuyao Zhang, Huarui Zhou, Hongbo Liu, Salma Tabassum
Summary: In this study, the iron-carbon multi-micro electric field coupling anaerobic co-digestion technique was used to treat coal gasification wastewater (CGW). The experimental results showed that under optimal operating conditions, this technique can significantly reduce the toxicity of the wastewater and achieve high removal efficiencies. Additionally, the analysis of microbial communities revealed that the coupling system promotes direct interspecies electron transfer.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)
Article
Biotechnology & Applied Microbiology
Aparecido Nivaldo Modenes, Debora Gozzi Fernandes, Daniela Estelita Goes Trigueros, Matheus Guilherme Amador, Fernando Rodolfo Espinoza-Quinones, Taysa de Souza Braniz, Adilson Ricken Schuelter, Glacy Jaqueline da Silva, Lucimar Pereira Bonett
Summary: This study aimed to systematically remove organic pollutants from raw dairy wastewater with high concentrations of COD, TOC, and TN using Poterioochromonas malhamensis algae strains. The results showed that the biomass yield rate using FP-PBRs was 10% higher than tubular PBRs, and the organic pollution in wastewater was significantly reduced with a decrease of about 98% in COD, 95% in TN, and 92% in TOC.
BIOCHEMICAL ENGINEERING JOURNAL
(2024)