Article
Energy & Fuels
Hao Guo, Jun Cheng, Yuxiang Mao, Lei Qian, Yang Shao, Weijuan Yang
Summary: A magnetic acid-base bifunctional catalyst was prepared for the conversion of acidic microalgal lipids into biodiesel. The activity of different coordination states of Co atoms and uncoordinated N sites was explored. The study revealed that pyridinic-N sites possessed the best catalytic activity.
Article
Energy & Fuels
Min-Yee Choo, Lee Eng Oi, Yu-Chuan Lin, Tau Chuan Ling, Eng-Poh Ng, Wei-Hsin Chen, Chin Kui Cheng, Joon Ching Juan
Summary: Energy is essential in the 21st century, with most of it being supplied by fossil fuels. However, the environmental and sustainability issues associated with burning fossil fuels have led to the production of biofuels. In this study, two synthesis strategies were used to address the diffusion limitation of conventional zeolite Y, resulting in the preparation of hierarchical nanosized zeolite Y. The best hierarchical nanosized zeolite Y (MY0.15) showed good deoxygenation performance and reusability under H-2 free conditions.
Article
Energy & Fuels
Jun Cheng, Yang Shao, Hao Guo, Ze Zhang, Yuxiang Mao, Lei Qian, Kai Xin, Weijuan Yang
Summary: In order to promote selectivity of jet fuel products in deoxygenation and cracking of microalgal biodiesel in CO2 atmosphere, terephthalic acid was hydroxylated to prepare Ni-based metal-organic frameworks (Ni-MOFs) as efficient bifunctional catalysts for converting methyl palmitate into jet-fuel range hydrocarbons. The study found that deoxygenation occurred more readily than bond cracking of methyl palmitate, while C = C bond migration and lactonization were key steps in cycloalkane formation. The selectivity of jet-fuel range hydrocarbons products over BDC-hydroxylated MOF (Ni-DOBDC) catalyst increased to 82%.
Article
Green & Sustainable Science & Technology
Yifan Nie, Qidong Hou, Hengli Qian, Xinyu Bai, Tianliang Xia, Ruite Lai, Guanjie Yu, Mian Laiq Ur Rehman, Meiting Ju
Summary: This paper presents an effective strategy to prepare mesoporous sulfonated carbon materials from chicken bones, which can be used for the conversion of carbohydrates to 5-ethoxymethylfurfural. The new materials exhibit excellent catalytic performance and reusability.
Article
Energy & Fuels
Mingjie Liao, Xin Ning, Junwen Chen, Jiajun Zheng, Wenlin Li, Ruifeng Li
Summary: The synthesized mesoporous ZSM-5 zeolites showed better stability and higher initial activity in 1-hexene oligomerization compared to common ZSM-5 zeolite. The catalytic activity was closely related to the number and distribution of acid sites, with fewer and moderate strength of Bronsted acid sites inhibiting cracking and coke formation.
Article
Chemistry, Multidisciplinary
Sukanya Chakraborty, Vandana Sirotiya, Anshuman Rai, Sunita Varjani, Vandana Vinayak
Summary: Microalgae, especially diatoms, are considered as rich sources of crude oil for biofuel production. However, there are limitations for the entry of such biofuel into the commercial market due to various factors. High yield and low cost of production are crucial for selecting microalgae for biofuel production. Catalysts play an important role in the transesterification process to form biofuels, and their cost and availability need to be considered for large-scale, economical biofuel production towards green vehicles with zero carbon footprint and pollution.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Review
Agricultural Engineering
Shazia Ali, Angela Paul Peter, Kit Wayne Chew, Heli Siti Halimatul Munawaroh, Pau Loke Show
Summary: Industrial effluents contain valuable products such as pharmaceutical residues, pesticides, dyes, and metal processes, and microalgae show great potential in recovering nutrients from these effluents, reducing energy consumption and secondary emissions.
BIORESOURCE TECHNOLOGY
(2021)
Review
Energy & Fuels
St Mardiana, Noerma J. Azhari, Thalabul Ilmi, Grandprix T. M. Kadja
Summary: The development of biofuel production from biomass is promising, with zeolites emerging as suitable materials for catalyzing biomass conversion. However, the diffusion limitation issues caused by the micropores in zeolites can be addressed by developing hierarchical porosity. Research on hierarchical zeolite catalysts is continuously growing to enhance their performance.
Article
Energy & Fuels
Sundaram Thanigaivel, Sundaram Vickram, Nibedita Dey, Govindarajan Gulothungan, Ramasamy Subbaiya, Muthusamy Govarthanan, Natchimuthu Karmegam, Woong Kim
Summary: Microalgal-based biorefinery systems offer advantages in meeting the rising demand for biofuel, food, and feed, as well as pharmaceuticals. However, there are challenges in terms of sustainability and cost-effectiveness.
Review
Green & Sustainable Science & Technology
Nongmaithem Debeni Devi, Angana Chaudhuri, Vaibhav V. Goud
Summary: This review discusses an innovative biofilm cultivation system for microalgae that aims to reduce the cost of biomass recovery and processing. It outlines two main cultivation strategies and highlights the influence of physicochemical parameters on microalgae growth.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(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
Biotechnology & Applied Microbiology
Victor Okorie Mkpuma, Tasneema Ishika, Navid Reza Moheimani, Houda Ennaceri
Summary: This article explores the potential of using wastewater as a cost-effective culture medium for cultivating B. braunii and producing biofuels and reclaiming wastewater. The suitability of different types of wastewater (agricultural, municipal, and industrial) for B. braunii growth is discussed, along with the physicochemical parameters that influence its growth in wastewater. The challenges and potential solutions for cultivating B. braunii in wastewater are identified. Utilizing abundantly available, costless wastewater for B. braunii cultivation is a roadmap towards achieving cost-efficient and environmentally friendly biofuel production and other valuable products.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Agricultural Engineering
Ankit Agarwalla, Sanjeev Mishra, Kaustubha Mohanty
Summary: This study investigates the suitability of using powdered activated carbon (PAC) treated effluent based culture (EBC) media for cultivating Monoraphidium sp. KMC4. The results show that EBC media treated with 30 mg L-1 PAC significantly enhances biomass yield and achieves good growth and water-saving effects in the recyclability study.
BIORESOURCE TECHNOLOGY
(2022)
Review
Agricultural Engineering
Amandeep Brar, Manish Kumar, Twinkle Soni, V. Vivekanand, Nidhi Pareek
Summary: Microalgae have high biomass production rate and oil content, but low productivity and high cost hinder their use as biofuel resource. Genetic alterations and metabolic engineering could enhance microalgae's properties for biofuel production, promoting their economic commercialization.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Rahulkumar Maurya, Xinyu Zhu, Borja Valverde-Perez, Boda Ravi Kiran, Thiyam General, Suvigya Sharma, Anil Kumar Sharma, Marianne Thomsen, S. Venkata Mohan, Kaustubha Mohanty, Irini Angelidaki
Summary: This review article focuses on recent updates on remediating industrial wastewater through microalgae cultivation, discussing topics such as enhancing microalgae growth and remediation simultaneously by adding additional nutrients, utilizing nutrient-rich wastewater directly, and discussing various strategies and tools used for microalgae cultivation on industrial wastewater.
BIORESOURCE TECHNOLOGY
(2022)