This page has only limited features, please log in for full access.

Unclaimed
Jo-Shu Chang
Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan

Basic Info

Basic Info is private.

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 31 July 2021 in Renewable and Sustainable Energy Reviews
Reads 0
Downloads 0

Microalgae are being promoted as a superior alternative feedstock for sustainable biofuel production and recently they are also being increasingly recognized as phytoremediation agents in bioremediation. Other than these, microalgae have been utilized as a sustainable feed in aquaculture for many years. The success of microalgae as a feed is based on the nutritional quality of microalgae, which are rich in protein, carbohydrates, fats, vitamins, minerals, and other beneficial biologically active components such as carotenoids and polyunsaturated fatty acids. Standards for the evaluation of microalgae include the assessment of various qualities such as digestibility, bioavailability, and toxicity analysis. This review provides comprehensive information regarding the current status and desirable characteristics of microalgae as a feed ingredient. Feed quality assessments such as protein quality, toxicological and microbiological analysis for microalgae are discussed. The techno-functional components of microalgae are presented in the feed perspective. The utilization of microalgae in various animal husbandry sectors and aquaculture are summarized. The advantages – disadvantages of microalgae as a feed is also presented, along with future research prospects. In short, this review will provide an overall view of the nutritional quality of microalgae and its beneficial application as a sustainable feed ingredient.

ACS Style

Dillirani Nagarajan; Sunita Varjani; Duu-Jong Lee; Jo-Shu Chang. Sustainable aquaculture and animal feed from microalgae – Nutritive value and techno-functional components. Renewable and Sustainable Energy Reviews 2021, 150, 111549 .

AMA Style

Dillirani Nagarajan, Sunita Varjani, Duu-Jong Lee, Jo-Shu Chang. Sustainable aquaculture and animal feed from microalgae – Nutritive value and techno-functional components. Renewable and Sustainable Energy Reviews. 2021; 150 ():111549.

Chicago/Turabian Style

Dillirani Nagarajan; Sunita Varjani; Duu-Jong Lee; Jo-Shu Chang. 2021. "Sustainable aquaculture and animal feed from microalgae – Nutritive value and techno-functional components." Renewable and Sustainable Energy Reviews 150, no. : 111549.

Review article
Published: 26 July 2021 in Essays in Biochemistry
Reads 0
Downloads 0

Pollution caused by persistent petro-plastics is the most pressing problem currently, with 8 million tons of plastic waste dumped annually in the oceans. Plastic waste management is not systematized in many countries, because it is laborious and expensive with secondary pollution hazards. Bioplastics, synthesized by microorganisms, are viable alternatives to petrochemical-based thermoplastics due to their biodegradable nature. Polyhydroxyalkanoates (PHAs) are a structurally and functionally diverse group of storage polymers synthesized by many microorganisms, including bacteria and Archaea. Some of the most important PHA accumulating bacteria include Cupriavidus necator, Burkholderia sacchari, Pseudomonas sp., Bacillus sp., recombinant Escherichia coli, and certain halophilic extremophiles. PHAs are synthesized by specialized PHA polymerases with assorted monomers derived from the cellular metabolite pool. In the natural cycle of cellular growth, PHAs are depolymerized by the native host for carbon and energy. The presence of these microbial PHA depolymerases in natural niches is responsible for the degradation of bioplastics. Polyhydroxybutyrate (PHB) is the most common PHA with desirable thermoplastic-like properties. PHAs have widespread applications in various industries including biomedicine, fine chemicals production, drug delivery, packaging, and agriculture. This review provides the updated knowledge on the metabolic pathways for PHAs synthesis in bacteria, and the major microbial hosts for PHAs production. Yeasts are presented as a potential candidate for industrial PHAs production, with their high amenability to genetic engineering and the availability of industrial-scale technology. The major bottlenecks in the commercialization of PHAs as an alternative for plastics and future perspectives are also critically discussed.

ACS Style

Dillirani Nagarajan; Ganies Riza Aristya; Yu-Ju Lin; Jui-Jen Chang; Hong-Wei Yen; Jo-Shu Chang. Microbial cell factories for the production of polyhydroxyalkanoates. Essays in Biochemistry 2021, 65, 337 -353.

AMA Style

Dillirani Nagarajan, Ganies Riza Aristya, Yu-Ju Lin, Jui-Jen Chang, Hong-Wei Yen, Jo-Shu Chang. Microbial cell factories for the production of polyhydroxyalkanoates. Essays in Biochemistry. 2021; 65 (2):337-353.

Chicago/Turabian Style

Dillirani Nagarajan; Ganies Riza Aristya; Yu-Ju Lin; Jui-Jen Chang; Hong-Wei Yen; Jo-Shu Chang. 2021. "Microbial cell factories for the production of polyhydroxyalkanoates." Essays in Biochemistry 65, no. 2: 337-353.

Review article
Published: 24 July 2021 in Trends in Food Science & Technology
Reads 0
Downloads 0

With the advent of the 21st century, natural food products and functional food ingredients have been heavily marketed as additives to improve human health and well-being. Although the early iterations were chemically synthesized, more emphasis on natural raw materials for pharmaceutical products shifted the focus towards microorganisms such as algae Algae are known to contain a wide range of functional components, such as carotenoids, chlorophyll, docosahexaenoic acid, eicosapentaenoic acid, and astaxanthin. These components possess numerous benefits for value-added food applications and are widely sought after in the current market. Due to the high expenditure related to the production of these nutraceutical items, researchers are looking towards enhancing the yield with the help of nanotechnology. Algae also proved to be a safe and cheaper alternative in the production of nanoparticles (NPs), which demonstrate a range of antimicrobial properties. Additionally, algae secrete various important biomolecules and bioactive components upon exposure to nanoparticles which can be utilized in the pharmaceutical industry. Further research focused on improving biomolecules secretion and sustainable NPs production is necessary for the exponential growth of this sector in the industrial world. This review highlights the studies conducted in the field of nanotechnology mediated with algae to enhance the generation of pharmaceuticals and nutraceuticals.

ACS Style

Apurav Krishna Koyande; Kit Wayne Chew; Sivakumar Manickam; Jo-Shu Chang; Pau-Loke Show. Emerging algal nanotechnology for high-value compounds: A direction to future food production. Trends in Food Science & Technology 2021, 116, 290 -302.

AMA Style

Apurav Krishna Koyande, Kit Wayne Chew, Sivakumar Manickam, Jo-Shu Chang, Pau-Loke Show. Emerging algal nanotechnology for high-value compounds: A direction to future food production. Trends in Food Science & Technology. 2021; 116 ():290-302.

Chicago/Turabian Style

Apurav Krishna Koyande; Kit Wayne Chew; Sivakumar Manickam; Jo-Shu Chang; Pau-Loke Show. 2021. "Emerging algal nanotechnology for high-value compounds: A direction to future food production." Trends in Food Science & Technology 116, no. : 290-302.

Journal article
Published: 05 July 2021 in Journal of Environmental Management
Reads 0
Downloads 0

Following the escalating human population growth and rapid urbanization, the tremendous amount of urban and industrial waste released leads to a series of critical issues such as health issues, climate change, water crisis, and pollution problems. With the advantages of a favorable carbon life cycle, high photosynthetic efficiencies, and being adaptive to harsh environments, algae have attracted attention as an excellent agent for pollution prevention and waste phycoremediation. Following the concept of circular economy and biorefinery for sustainable production and waste minimization, this review discusses the role of four different algal-based wastewater treatment technologies, including high-rate algal ponds (HRAPs), HRAP-absorption column (HRAP-AC), hybrid algal biofilm-enhanced raceway pond (HABERP) and algal turf scrubber (ATS) in waste management and resource recovery. In addition to the nutrient removal mechanisms and operation parameters, recent advances and developments have been discussed for each technology, including (1) Innovative operation strategies and treatment of emerging contaminants (ECs) employing HRAPs, (2) Biogas upgrading utilizing HRAP-AC system and approaches of O2 minimization in biomethane, (3) Operation of different HABERP systems, (4) Life-cycle and cost analysis of HRAPs-based wastewater treatment system, and (5) Value-upgrading for harvested algal biomass and life-cycle cost analysis of ATS system.

ACS Style

Yoong Kit Leong; Chi-Yu Huang; Jo-Shu Chang. Pollution prevention and waste phycoremediation by algal-based wastewater treatment technologies: The applications of high-rate algal ponds (HRAPs) and algal turf scrubber (ATS). Journal of Environmental Management 2021, 296, 113193 .

AMA Style

Yoong Kit Leong, Chi-Yu Huang, Jo-Shu Chang. Pollution prevention and waste phycoremediation by algal-based wastewater treatment technologies: The applications of high-rate algal ponds (HRAPs) and algal turf scrubber (ATS). Journal of Environmental Management. 2021; 296 ():113193.

Chicago/Turabian Style

Yoong Kit Leong; Chi-Yu Huang; Jo-Shu Chang. 2021. "Pollution prevention and waste phycoremediation by algal-based wastewater treatment technologies: The applications of high-rate algal ponds (HRAPs) and algal turf scrubber (ATS)." Journal of Environmental Management 296, no. : 113193.

Review
Published: 21 June 2021 in Sustainability
Reads 0
Downloads 0

Managing the concentration of atmospheric CO2 requires a multifaceted engineering strategy, which remains a highly challenging task. Reducing atmospheric CO2 (CO2R) by converting it to value-added chemicals in a carbon neutral footprint manner must be the ultimate goal. The latest progress in CO2R through either abiotic (artificial catalysts) or biotic (natural enzymes) processes is reviewed herein. Abiotic CO2R can be conducted in the aqueous phase that usually leads to the formation of a mixture of CO, formic acid, and hydrogen. By contrast, a wide spectrum of hydrocarbon species is often observed by abiotic CO2R in the gaseous phase. On the other hand, biotic CO2R is often conducted in the aqueous phase and a wide spectrum of value-added chemicals are obtained. Key to the success of the abiotic process is understanding the surface chemistry of catalysts, which significantly governs the reactivity and selectivity of CO2R. However, in biotic CO2R, operation conditions and reactor design are crucial to reaching a neutral carbon footprint. Future research needs to look toward neutral or even negative carbon footprint CO2R processes. Having a deep insight into the scientific and technological aspect of both abiotic and biotic CO2R would advance in designing efficient catalysts and microalgae farming systems. Integrating the abiotic and biotic CO2R such as microbial fuel cells further diversifies the spectrum of CO2R.

ACS Style

TsingHai Wang; Cheng-Di Dong; Jui-Yen Lin; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. Sustainability 2021, 13, 6962 .

AMA Style

TsingHai Wang, Cheng-Di Dong, Jui-Yen Lin, Chiu-Wen Chen, Jo-Shu Chang, Hyunook Kim, Chin-Pao Huang, Chang-Mao Hung. Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. Sustainability. 2021; 13 (12):6962.

Chicago/Turabian Style

TsingHai Wang; Cheng-Di Dong; Jui-Yen Lin; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. 2021. "Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective." Sustainability 13, no. 12: 6962.

Journal article
Published: 02 June 2021 in Journal of Hazardous Materials
Reads 0
Downloads 0

Phycoremediation is an emerging technology, where algae-based processes were used to effectively remove nutrients, organic wastes, and toxic heavy metals from the polluted environment. The waste algal biomass obtained after phycoremediation, which may contain residual hazardous materials, could still be used as feedstock to produce biofuels/bioenergy preferably through thermochemical conversion technology. This review proposes a synergistic approach by utilizing the phycoremediation-derived algal biomass (PCDA) as feedstock for efficient hazardous waste treatment and clean energy generation via supercritical water gasification (SCWG). The review provides an in-depth study of catalytic, non-catalytic, and continuous SCWG of algal biomass, aiming to lay out the foundations for future study. In addition, the concepts of heat integration as well as water, nutrient, and CO2 recycling were introduced for a sustainable algae-to-biofuel process, which significantly enhances the overall energy and material efficiency of SCWG. The production of biofuel from algal biomass via other advanced gasification technologies, such as integration with other thermochemical conversion techniques, co-gasification, chemical looping gasification (CLG), and integrated gasification and combined cycle (IGCC) were also discussed. Furthermore, the discussion of kinetics and thermodynamics models, as well as life cycle and techno-economic assessments, appear to provide insights for future commercial applications.

ACS Style

Yoong Kit Leong; Wei-Hsin Chen; Duu-Jong Lee; Jo-Shu Chang. Supercritical water gasification (SCWG) as a potential tool for the valorization of phycoremediation-derived waste algal biomass for biofuel generation. Journal of Hazardous Materials 2021, 418, 126278 .

AMA Style

Yoong Kit Leong, Wei-Hsin Chen, Duu-Jong Lee, Jo-Shu Chang. Supercritical water gasification (SCWG) as a potential tool for the valorization of phycoremediation-derived waste algal biomass for biofuel generation. Journal of Hazardous Materials. 2021; 418 ():126278.

Chicago/Turabian Style

Yoong Kit Leong; Wei-Hsin Chen; Duu-Jong Lee; Jo-Shu Chang. 2021. "Supercritical water gasification (SCWG) as a potential tool for the valorization of phycoremediation-derived waste algal biomass for biofuel generation." Journal of Hazardous Materials 418, no. : 126278.

Review
Published: 18 May 2021 in Sustainability
Reads 0
Downloads 0

Biochar is a carbon-rich material prepared from the pyrolysis of biomass under various conditions. Recently, biochar drew great attention due to its promising potential in climate change mitigation, soil amendment, and environmental control. Obviously, biochar can be a beneficial soil amendment in several ways including preventing nutrients loss due to leaching, increasing N and P mineralization, and enabling the microbial mediation of N2O and CO2 emissions. However, there are also conflicting reports on biochar effects, such as water logging and weathering induced change of surface properties that ultimately affects microbial growth and soil fertility. Despite the voluminous reports on soil and biochar properties, few studies have systematically addressed the effects of biochar on the sequestration of carbon, nitrogen, and phosphorus in soils. Information on microbially-mediated transformation of carbon (C), nitrogen (N), and phosphorus (P) species in the soil environment remains relatively uncertain. A systematic documentation of how biochar influences the fate and transport of carbon, phosphorus, and nitrogen in soil is crucial to promoting biochar applications toward environmental sustainability. This report first provides an overview on the adsorption of carbon, phosphorus, and nitrogen species on biochar, particularly in soil systems. Then, the biochar-mediated transformation of organic species, and the transport of carbon, nitrogen, and phosphorus in soil systems are discussed. This review also reports on the weathering process of biochar and implications in the soil environment. Lastly, the current knowledge gaps and priority research directions for the biochar-amended systems in the future are assessed. This review focuses on literatures published in the past decade (2009–2021) on the adsorption, degradation, transport, weathering, and transformation of C, N, and P species in soil systems with respect to biochar applications.

ACS Style

Shu-Yuan Pan; Cheng-Di Dong; Jenn-Fang Su; Po-Yen Wang; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems. Sustainability 2021, 13, 5612 .

AMA Style

Shu-Yuan Pan, Cheng-Di Dong, Jenn-Fang Su, Po-Yen Wang, Chiu-Wen Chen, Jo-Shu Chang, Hyunook Kim, Chin-Pao Huang, Chang-Mao Hung. The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems. Sustainability. 2021; 13 (10):5612.

Chicago/Turabian Style

Shu-Yuan Pan; Cheng-Di Dong; Jenn-Fang Su; Po-Yen Wang; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. 2021. "The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems." Sustainability 13, no. 10: 5612.

Journal article
Published: 24 April 2021 in Bioresource Technology
Reads 0
Downloads 0

Microalgae-derived carotenoids have increasingly been considered as feasible green alternatives for synthetic antioxidants. In this study, the lutein high-yielding strain (Chlorella sorokiniana MB-1; henceforth MB-1) and its mutant derivative (C. sorokiniana MB-1-M12; henceforth M12) were evaluated for their growth, biomass production, and lutein accumulation in three different cultivation modes – photoautotrophy, mixotrophy, and heterotrophy. M12 could grow effectively under heterotrophic conditions, but the lutein content was lower, indicating the necessity of photo-induction for lutein accumulation. Metabolic analysis of MB-1 and M12 in autotrophic growth in the presence of carbon dioxide indicated that carbon assimilation and channeling of the fixed metabolites towards carotenoid accumulation was elevated in M12 compared to MB-1. Novel two-stage alternative cultivation strategies (Autotrophic/Heterotrophic and Mixotrophic/Heterotrophic cultures) were applied for enhancing lutein production in M12. Maximum lutein quantity (6.17 mg/g) and production (33.64 mg/L) were obtained with the TSHM strategy that is considered the best two-stage operation.

ACS Style

Jih-Heng Chen; Yuichi Kato; Mami Matsuda; Chun-Yen Chen; Dillirani Nagarajan; Tomohisa Hasunuma; Akihiko Kondo; Jo-Shu Chang. Lutein production with Chlorella sorokiniana MB-1-M12 using novel two-stage cultivation strategies – metabolic analysis and process improvement. Bioresource Technology 2021, 334, 125200 .

AMA Style

Jih-Heng Chen, Yuichi Kato, Mami Matsuda, Chun-Yen Chen, Dillirani Nagarajan, Tomohisa Hasunuma, Akihiko Kondo, Jo-Shu Chang. Lutein production with Chlorella sorokiniana MB-1-M12 using novel two-stage cultivation strategies – metabolic analysis and process improvement. Bioresource Technology. 2021; 334 ():125200.

Chicago/Turabian Style

Jih-Heng Chen; Yuichi Kato; Mami Matsuda; Chun-Yen Chen; Dillirani Nagarajan; Tomohisa Hasunuma; Akihiko Kondo; Jo-Shu Chang. 2021. "Lutein production with Chlorella sorokiniana MB-1-M12 using novel two-stage cultivation strategies – metabolic analysis and process improvement." Bioresource Technology 334, no. : 125200.

Review
Published: 15 April 2021 in Environmental Chemistry Letters
Reads 0
Downloads 0

In the context of climate change and the increase of the energy demand, there is a need for carbon sequestration methods and sustainable fuels. This can be done by cultivation of microalgae, an unicellular microscopic algae that converts carbon dioxide into high-value bioproducts and energy. Moreover, microalgae can be used to assess the health of ecosystems such as lakes. Here we review microalgae for biofuel, for wastewater treatment and as bioindicators. We discuss the impact of processes based on microalgae using life cycle assessment. We present co-cultivation of microalgae with other microbes, and we compare conventional processes with processes integrating auto-flocculation, in situ transesterification and excretion.

ACS Style

Angela Paul Peter; Kuan Shiong Khoo; Kit Wayne Chew; Tau Chuan Ling; Shih-Hsin Ho; Jo-Shu Chang; Pau Loke Show. Microalgae for biofuels, wastewater treatment and environmental monitoring. Environmental Chemistry Letters 2021, 19, 2891 -2904.

AMA Style

Angela Paul Peter, Kuan Shiong Khoo, Kit Wayne Chew, Tau Chuan Ling, Shih-Hsin Ho, Jo-Shu Chang, Pau Loke Show. Microalgae for biofuels, wastewater treatment and environmental monitoring. Environmental Chemistry Letters. 2021; 19 (4):2891-2904.

Chicago/Turabian Style

Angela Paul Peter; Kuan Shiong Khoo; Kit Wayne Chew; Tau Chuan Ling; Shih-Hsin Ho; Jo-Shu Chang; Pau Loke Show. 2021. "Microalgae for biofuels, wastewater treatment and environmental monitoring." Environmental Chemistry Letters 19, no. 4: 2891-2904.

Journal article
Published: 11 April 2021 in Sustainability
Reads 0
Downloads 0

This study investigated the kinetics of isothermal torrefaction of sorghum distilled residue (SDR), the main byproduct of the sorghum liquor-making process. The samples chosen were torrefied isothermally at five different temperatures under a nitrogen atmosphere in a thermogravimetric analyzer. Afterward, two different kinetic methods, the traditional model-free approach, and a two-step parallel reaction (TPR) kinetic model, were used to obtain the torrefaction kinetics of SDR. With the acquired 92–97% fit quality, which is the degree of similarity between calculated and real torrefaction curves, the traditional method approached using the Arrhenius equation showed a poor ability on kinetics prediction, whereas the TPR kinetic model optimized by the particle swarm optimization (PSO) algorithm showed that all the fit qualities are as high as 99%. The results suggest that PSO can simulate the actual torrefaction kinetics more accurately than the traditional kinetics approach. Moreover, the PSO method can be further employed for simulating the weight changes of reaction intermediates throughout the process. This computational method could be used as a powerful tool for industrial design and optimization in the biochar manufacturing process.

ACS Style

Shih-Wei Yen; Wei-Hsin Chen; Jo-Shu Chang; Chun-Fong Eng; Salman Raza Naqvi; Pau Show. Torrefaction Thermogravimetric Analysis and Kinetics of Sorghum Distilled Residue for Sustainable Fuel Production. Sustainability 2021, 13, 4246 .

AMA Style

Shih-Wei Yen, Wei-Hsin Chen, Jo-Shu Chang, Chun-Fong Eng, Salman Raza Naqvi, Pau Show. Torrefaction Thermogravimetric Analysis and Kinetics of Sorghum Distilled Residue for Sustainable Fuel Production. Sustainability. 2021; 13 (8):4246.

Chicago/Turabian Style

Shih-Wei Yen; Wei-Hsin Chen; Jo-Shu Chang; Chun-Fong Eng; Salman Raza Naqvi; Pau Show. 2021. "Torrefaction Thermogravimetric Analysis and Kinetics of Sorghum Distilled Residue for Sustainable Fuel Production." Sustainability 13, no. 8: 4246.

Journal article
Published: 05 April 2021 in Journal of Cleaner Production
Reads 0
Downloads 0

The life cycle assessment (LCA) of hydrogen/methanol production processes connected with hydrogen fuel cell vehicle (HFCV) and methanol reformer-embedded fuel cell vehicle (MRFCV) are addressed. According to the scope definition of well-to-wheel and the four steps of LCA methodology, the ReCiPe endpoint score of the natural gas-fed methanol production process named by SC1MeOH is up to 2.06 kPt, which is higher than the natural gas-fed hydrogen production process called SC2H2 by 50.3%. The new biomethanol production process termed by SC3MeOH, which is a combination of anaerobic co-digestion, microalgae production process, and combined heat and power (CHP), is validated to reduce the environmental impact of SC1MeOH by 93.6% due to wheat straw (waste) and microalgae as inlet sources, almost zero air pollutants, 58% carbons stored in the soil of the wheatland, and no grid supply. A comparative LCA shows that the MRFCV connected with SC3MeOH is lower than the HFCV associated with SC2H2 by 40%. The Levelized cost of methanol (LCOM) for SC3MeOH (about 3.08USD/kgMeOH) is higher than SC1MeOH by 18.6%. These comparisons show that the MRFCV connected with SC3MeOH is an HFVC for green cars due to relatively low investments in storage facilities and transport and minimum environmental impacts.

ACS Style

Wei Wu; Ching-Ting Pai; Karthickeyan Viswanathan; Jo-Shu Chang. Comparative life cycle assessment and economic analysis of methanol/hydrogen production processes for fuel cell vehicles. Journal of Cleaner Production 2021, 300, 126959 .

AMA Style

Wei Wu, Ching-Ting Pai, Karthickeyan Viswanathan, Jo-Shu Chang. Comparative life cycle assessment and economic analysis of methanol/hydrogen production processes for fuel cell vehicles. Journal of Cleaner Production. 2021; 300 ():126959.

Chicago/Turabian Style

Wei Wu; Ching-Ting Pai; Karthickeyan Viswanathan; Jo-Shu Chang. 2021. "Comparative life cycle assessment and economic analysis of methanol/hydrogen production processes for fuel cell vehicles." Journal of Cleaner Production 300, no. : 126959.

Journal article
Published: 31 March 2021 in Bioresource Technology
Reads 0
Downloads 0

Microalgae are potential sustainable renewable sources of energy but are highly underutilized due to the expensive and time-consuming downstream processing. This study aims at curbing these obstacles by extracting multiple components with a single processing unit. In this work, an ultrasound-assisted liquid triphasic flotation system (U-LTF) was incorporated to extract proteins, lipids, and carbohydrates by phase separation. The parameters involved were optimized and the final recovery efficiency of proteins, lipids, and carbohydrates was determined. A control run involving conventional three-phase partitioning and a 15-fold scale-up system with the recycling of phase components were also performed. Gas Chromatograph (GC-FID) and Fourier Transform Infrared (FTIR) spectroscopy were used to examine the potential of extracted products as a source of biofuel. This biorefinery approach is crucial in commercializing microalgae for biodiesel and bioethanol generation with a side product of purified proteins as feed.

ACS Style

Apurav Krishna Koyande; Kit Wayne Chew; Pau-Loke Show; Heli Siti Halimatul Munawaroh; Jo-Shu Chang. Liquid triphasic systems as sustainable downstream processing of Chlorella sp. biorefinery for potential biofuels and feed production. Bioresource Technology 2021, 333, 125075 .

AMA Style

Apurav Krishna Koyande, Kit Wayne Chew, Pau-Loke Show, Heli Siti Halimatul Munawaroh, Jo-Shu Chang. Liquid triphasic systems as sustainable downstream processing of Chlorella sp. biorefinery for potential biofuels and feed production. Bioresource Technology. 2021; 333 ():125075.

Chicago/Turabian Style

Apurav Krishna Koyande; Kit Wayne Chew; Pau-Loke Show; Heli Siti Halimatul Munawaroh; Jo-Shu Chang. 2021. "Liquid triphasic systems as sustainable downstream processing of Chlorella sp. biorefinery for potential biofuels and feed production." Bioresource Technology 333, no. : 125075.

Journal article
Published: 13 March 2021 in International Journal of Hydrogen Energy
Reads 0
Downloads 0

This study investigated the effects of substrate concentration, HRT (hydraulic retention time), and pre-treatment of the substrate molasses on biohydrogen production from waste molasses (condensed molasses fermentation solubles, CMS) with a CSTR (continuously-stirred tank reactor). First, the hydrogen production was performed with various CMS concentrations (40–90 g COD/L, total sugar 8.7–22.6 g/L) with 6 h HRT. The results show that the maximal hydrogen production rate (HPR) occurred at 80 g COD/L substrate (19.8 g ToSu/L, ToSu: Total Sugar), obtaining an HPR of 0.417 mol/L/d. However, maximum hydrogen yield (HY) of 1.44 mol H2/mol hexose and overall hydrogen production efficiency (HPE) of 25.6% were achieved with a CMS concentration of 70 g COD/L (17.3 g ToSu/L). The substrate inhibition occurred when CMS concentration was increased to 90 g COD/L (22.6 g ToSu/L). Furthermore, it was observed that the optimal HPR, HY, and HPE all occurred at HRT 6 h. Operating at a lower HRT of 4 h decreased the hydrogen production performance because of lower substrate utilization efficiency. The employment of pre-heating treatment (60 °C for 1 h) of the substrate could markedly enhance the fermentation performance. With 6 h HRT and substrate pre-heating treatment, the HPE raised to 29.9%, which is 18% higher than that obtained without thermal pretreatment.

ACS Style

Kuo-Shing Lee; Shin-Liang Chen; Chiu-Yue Lin; Jo-Shu Chang. Converting waste molasses liquor into biohydrogen via dark fermentation using a continuous bioreactor. International Journal of Hydrogen Energy 2021, 46, 16546 -16554.

AMA Style

Kuo-Shing Lee, Shin-Liang Chen, Chiu-Yue Lin, Jo-Shu Chang. Converting waste molasses liquor into biohydrogen via dark fermentation using a continuous bioreactor. International Journal of Hydrogen Energy. 2021; 46 (31):16546-16554.

Chicago/Turabian Style

Kuo-Shing Lee; Shin-Liang Chen; Chiu-Yue Lin; Jo-Shu Chang. 2021. "Converting waste molasses liquor into biohydrogen via dark fermentation using a continuous bioreactor." International Journal of Hydrogen Energy 46, no. 31: 16546-16554.

Journal article
Published: 28 January 2021 in Bioresource Technology
Reads 0
Downloads 0

In this study, process optimization for the microalgae-based piggery wastewater treatment was carried out by growing Chlorella sorokiniana AK-1 on untreated piggery wastewater with efficient COD/BOD/TN/TP removal and high biomass/protein productivities. Integration of the immobilization carriers (sponge, activated carbon) and semi-batch cultivation resulted in the effective treatment of raw untreated piggery wastewater. With 100% wastewater, 0.2% sponge and 2% activated carbon, the semi-batch cultivation (90% media replacement every 6 days) exhibited a COD, BOD, TN and TP removal efficiency of 95.7%, 99.0%, 94.1% and 96.9%, respectively. The maximal protein content, protein productivity, lutein content, and lutein productivity of the obtained microalgal biomass was 61.1%, 0.48 g/L/d, 4.56 mg/g, and 3.56 mg/L/d, respectively. The characteristics of the treated effluent satisfied Taiwan Piggery Wastewater Discharge Standards (COD < 600 mg/L, BOD < 80 mg/L). This innovative approach demonstrated excellent performance for simultaneous piggery wastewater treatment and microalgal biomass production.

ACS Style

Chun-Yen Chen; En-Wei Kuo; Dillirani Nagarajan; Cheng-Di Dong; Duu-Jong Lee; Sunita Varjani; Su Shiung Lam; Jo-Shu Chang. Semi-batch cultivation of Chlorella sorokiniana AK-1 with dual carriers for the effective treatment of full strength piggery wastewater treatment. Bioresource Technology 2021, 326, 124773 .

AMA Style

Chun-Yen Chen, En-Wei Kuo, Dillirani Nagarajan, Cheng-Di Dong, Duu-Jong Lee, Sunita Varjani, Su Shiung Lam, Jo-Shu Chang. Semi-batch cultivation of Chlorella sorokiniana AK-1 with dual carriers for the effective treatment of full strength piggery wastewater treatment. Bioresource Technology. 2021; 326 ():124773.

Chicago/Turabian Style

Chun-Yen Chen; En-Wei Kuo; Dillirani Nagarajan; Cheng-Di Dong; Duu-Jong Lee; Sunita Varjani; Su Shiung Lam; Jo-Shu Chang. 2021. "Semi-batch cultivation of Chlorella sorokiniana AK-1 with dual carriers for the effective treatment of full strength piggery wastewater treatment." Bioresource Technology 326, no. : 124773.

Review
Published: 28 January 2021 in Chemosphere
Reads 0
Downloads 0

Offering a potential solution for global food security and mitigating environmental issues caused by the expansion of land-based food production, the carbon-hunger and nutrient-rich microalgae emerged as a sustainable food source for both humans and animals. Other than as an alternative source for protein, microalgae offer its most valuable nutrients, omega-3 and 6 long-chain polyunsaturated fatty acids where the content can compete with that of marine fish with lower chemicals contamination and higher purity. Furthermore, the colorful pigments of microalgae can act as antioxidants together with many other health-improving properties as well as a natural colorant. In addition, the supplementation of algae as animal feed provides plentiful benefits, such as improved growth and body weight, reduced feed intake, enhanced immune response and durability towards illness, antibacterial and antiviral action as well as enrichment of livestock products with bioactive compounds. The significant breakthrough in algal biotechnology has made algae a powerful “cell factory” for food production and lead to the rapid growth of the algal bioeconomy in the food and feed industry. The first overview of this review was to present the general of microalgae and its potential capability. Subsequently, the nutritional compositions of microalgae were discussed together with its applications in human foods and animal feeds, followed by the exploration of their economic feasibility and sustainability as well as market trends. Lastly, both challenges and future perspectives were also discussed.

ACS Style

Adi Kusmayadi; Yoong Kit Leong; Hong-Wei Yen; Chi-Yu Huang; Jo-Shu Chang. Microalgae as sustainable food and feed sources for animals and humans – Biotechnological and environmental aspects. Chemosphere 2021, 271, 129800 .

AMA Style

Adi Kusmayadi, Yoong Kit Leong, Hong-Wei Yen, Chi-Yu Huang, Jo-Shu Chang. Microalgae as sustainable food and feed sources for animals and humans – Biotechnological and environmental aspects. Chemosphere. 2021; 271 ():129800.

Chicago/Turabian Style

Adi Kusmayadi; Yoong Kit Leong; Hong-Wei Yen; Chi-Yu Huang; Jo-Shu Chang. 2021. "Microalgae as sustainable food and feed sources for animals and humans – Biotechnological and environmental aspects." Chemosphere 271, no. : 129800.

Review
Published: 15 January 2021 in Trends in Plant Science
Reads 0
Downloads 0

Given their advantages of high photosynthetic efficiency and non-competition with land-based crops, algae, that are carbon-hungry and sunlight-driven microbial factories, are a promising solution to resolve energy crisis, food security, and pollution problems. The ability to recycle nutrient and CO2 fixation from waste sources makes algae a valuable feedstock for biofuels, food and feeds, biochemicals, and biomaterials. Innovative technologies such as the bicarbonate-based integrated carbon capture and algae production system (BICCAPS), integrated algal bioenergy carbon capture and storage (BECCS), as well as ocean macroalgal afforestation (OMA), can be used to realize a low-carbon algal bioeconomy. We review how algae can be applied in the framework of integrated low-carbon circular bioeconomy models, focusing on sustainable biofuels, low-carbon feedstocks, carbon capture, and advances in algal biotechnology.

ACS Style

Yoong Kit Leong; Kit Wayne Chew; Wei-Hsin Chen; Jo-Shu Chang; Pau Loke Show. Reuniting the Biogeochemistry of Algae for a Low-Carbon Circular Bioeconomy. Trends in Plant Science 2021, 26, 729 -740.

AMA Style

Yoong Kit Leong, Kit Wayne Chew, Wei-Hsin Chen, Jo-Shu Chang, Pau Loke Show. Reuniting the Biogeochemistry of Algae for a Low-Carbon Circular Bioeconomy. Trends in Plant Science. 2021; 26 (7):729-740.

Chicago/Turabian Style

Yoong Kit Leong; Kit Wayne Chew; Wei-Hsin Chen; Jo-Shu Chang; Pau Loke Show. 2021. "Reuniting the Biogeochemistry of Algae for a Low-Carbon Circular Bioeconomy." Trends in Plant Science 26, no. 7: 729-740.

Research article
Published: 12 December 2020 in ACS Omega
Reads 0
Downloads 0

Fucoidans are heterologous polysaccharides commonly seen in brown macroalgae and are known for their biological activity including anticancer, antiangiogenic, immunomodulation, and antiviral properties. The brown macroalga Sargassum siliquosum was used for the extraction and analysis of fucoidan in this study. The S. siliquosum fucoidan was indicated as a galactofucoidan composed of sugars, uronate, and sulfate at a ratio of 12:1:4 and its purity was 85% based on the abovementioned three major components. Structural analysis by electrospray ionization collision-induced dissociation tandem mass spectroscopy revealed that the purified fucoidan consisted of a carbohydrate chain composed of (1→3)-linked or (1→4)-linked l-fucose residues, with sulfate groups at C-2 and C-4 positions. Galactose residues with (1→4)-linkages function as the branch points and they are located at the C-3 or C-4 position of fucose residues. Galactose residues are sulfated mainly at C-4 and C-6, while some sulfation can also be seen at C-2. The fucoidan purified from S. siliquosum demonstrated antioxidant, anti-inflammatory, and antilipogenic activities.

ACS Style

Shao-Hua Wang; Chih-Yu Huang; Chun-Yen Chen; Chia-Che Chang; Chun-Yung Huang; Cheng-Di Dong; Jo-Shu Chang. Structure and Biological Activity Analysis of Fucoidan Isolated from Sargassum siliquosum. ACS Omega 2020, 5, 32447 -32455.

AMA Style

Shao-Hua Wang, Chih-Yu Huang, Chun-Yen Chen, Chia-Che Chang, Chun-Yung Huang, Cheng-Di Dong, Jo-Shu Chang. Structure and Biological Activity Analysis of Fucoidan Isolated from Sargassum siliquosum. ACS Omega. 2020; 5 (50):32447-32455.

Chicago/Turabian Style

Shao-Hua Wang; Chih-Yu Huang; Chun-Yen Chen; Chia-Che Chang; Chun-Yung Huang; Cheng-Di Dong; Jo-Shu Chang. 2020. "Structure and Biological Activity Analysis of Fucoidan Isolated from Sargassum siliquosum." ACS Omega 5, no. 50: 32447-32455.

Review
Published: 29 November 2020 in Biotechnology Journal
Reads 0
Downloads 0

The imprudent use of fossil fuels has resulted in high greenhouse gas (GHG) emissions, leading to climate change and global warming. Reduction in GHG emissions and energy insecurity imposed by the depleting fossil fuel reserves led to the search for alternative sustainable fuels. Hydrogen is a potential alternative energy carrier and is of particular interest because hydrogen combustion releases only water. Hydrogen is also an important industrial feedstock. As an alternative energy carrier, hydrogen can be used in fuel cells for power generation. Current hydrogen production mainly relies on fossil fuels and is usually energy and CO2‐emission intensive, thus the use of fossil fuel‐derived hydrogen as a carbon‐free fuel source is fallacious. Biohydrogen production can be achieved via microbial methods, and the use of microalgae for hydrogen production is outstanding due to the carbon mitigating effects and the utilization of solar energy as an energy source by microalgae. This review provides comprehensive information on the mechanisms of hydrogen production by microalgae and the enzymes involved. The major challenges in the commercialization of microalgae‐based photobiological hydrogen production are critically analyzed and future research perspectives are discussed. Life cycle analysis and economic assessment of hydrogen production by microalgae are also presented. This article is protected by copyright. All rights reserved

ACS Style

Dillirani Nagarajan; Cheng‐Di Dong; Chun‐Yen Chen; Duu‐Jong Lee; Jo‐Shu Chang. Biohydrogen production from microalgae—Major bottlenecks and future research perspectives. Biotechnology Journal 2020, 16, e2000124 .

AMA Style

Dillirani Nagarajan, Cheng‐Di Dong, Chun‐Yen Chen, Duu‐Jong Lee, Jo‐Shu Chang. Biohydrogen production from microalgae—Major bottlenecks and future research perspectives. Biotechnology Journal. 2020; 16 (5):e2000124.

Chicago/Turabian Style

Dillirani Nagarajan; Cheng‐Di Dong; Chun‐Yen Chen; Duu‐Jong Lee; Jo‐Shu Chang. 2020. "Biohydrogen production from microalgae—Major bottlenecks and future research perspectives." Biotechnology Journal 16, no. 5: e2000124.

Journal article
Published: 13 November 2020 in Energy Conversion and Management
Reads 0
Downloads 0

The experimental results of microalgae pyrolysis kinetics are beneficial to the reactor design in the biomass-to-energy process. To understand the complex pyrolysis process of microalgae, pyrolysis kinetics of microalgae components pretreated by wet torrefaction was evaluated using the independent parallel reaction model. Four and five reaction models were implemented to analyze the pyrolysis kinetics of microalgae Chlorella vulgaris ESP-31 (high-carbohydrate) and FSP-E (high-protein), respectively. Five pseudo-components were required to investigate the microalga FSP-E due to the extra carbonaceous material at temperatures higher than 600 °C. In the pyrolysis TGA curves, the first peak of microalga ESP-31 was diminished whereas only a slight decrease in the first peak of microalga FSP-E for the pretreated microalgae in water and H2SO4 solutions. From the results, pyrolysis kinetics with a fit quality of at least 97% was predicted for both species of microalgae. The activation energy of carbohydrates for microalga ESP-31 was decreased from 221.33 to 64.59 kJ mol−1 after pretreated in H2SO4. In contrast, the activation energies of proteins and lipids were increased for the pretreated microalgae ESP-31. Small changes in the activation energy range of carbohydrates, lipids, and other components were observed for microalga FSP-E compared to microalga ESP-31. On top of that, the thermal degradation temperatures and activation energies of carbohydrates and proteins for the pretreated microalgae ESP-31 and FSP-E displayed the opposite trend. In short, kinetic parameters of microalga ESP-31 could be effectively affected by low-temperature wet torrefaction compared to microalga FSP-E.

ACS Style

Yong Yang Gan; Wei-Hsin Chen; Hwai Chyuan Ong; Yu-Ying Lin; Herng-Kuang Sheen; Jo-Shu Chang; Tau Chuan Ling. Effect of wet torrefaction on pyrolysis kinetics and conversion of microalgae carbohydrates, proteins, and lipids. Energy Conversion and Management 2020, 227, 113609 .

AMA Style

Yong Yang Gan, Wei-Hsin Chen, Hwai Chyuan Ong, Yu-Ying Lin, Herng-Kuang Sheen, Jo-Shu Chang, Tau Chuan Ling. Effect of wet torrefaction on pyrolysis kinetics and conversion of microalgae carbohydrates, proteins, and lipids. Energy Conversion and Management. 2020; 227 ():113609.

Chicago/Turabian Style

Yong Yang Gan; Wei-Hsin Chen; Hwai Chyuan Ong; Yu-Ying Lin; Herng-Kuang Sheen; Jo-Shu Chang; Tau Chuan Ling. 2020. "Effect of wet torrefaction on pyrolysis kinetics and conversion of microalgae carbohydrates, proteins, and lipids." Energy Conversion and Management 227, no. : 113609.

Journal article
Published: 17 October 2020 in Biochemical Engineering Journal
Reads 0
Downloads 0

Flue gases emitted from industrial plants mainly contribute to global CO2 emissions. Sequestrations of CO2 from the flue gas could reduce the impact of CO2 on global warming. In this study, recombinant cyanobacterial strains with enhanced photosynthetic activity, cell growth, and ethanol production were generated by co-overexpressing ictB, ecaA, and groESL, along with a heterologous ethanol synthesis pathway (pdc-adhII genes from Zymomonas mobilis) in S. elongatus PCC7942. The engineered S. elongatus PCC7942 exhibited a significant improvement in cell growth and ethanol production under a simulated flue gas consisted of 25% CO2, 80−90 ppm SO2, 90−100 ppm NO. The present work represents the first attempt of direct photoconversion of CO2 from flue gases to ethanol via expression of ictB, ecaA, groESL, and pdc-adhII in S. elongatus. The transgenic cyanobacterium becomes useful for sequestrations of CO2 directly from flue gases with the simultaneous production of bioethanol.

ACS Style

Hsiang-Hui Chou; Hsiang-Yen Su; Te-Jin Chow; Tse-Min Lee; Wen-Hsi Cheng; Jo-Shu Chang; Hsien-Jung Chen. Engineering cyanobacteria with enhanced growth in simulated flue gases for high-yield bioethanol production. Biochemical Engineering Journal 2020, 165, 107823 .

AMA Style

Hsiang-Hui Chou, Hsiang-Yen Su, Te-Jin Chow, Tse-Min Lee, Wen-Hsi Cheng, Jo-Shu Chang, Hsien-Jung Chen. Engineering cyanobacteria with enhanced growth in simulated flue gases for high-yield bioethanol production. Biochemical Engineering Journal. 2020; 165 ():107823.

Chicago/Turabian Style

Hsiang-Hui Chou; Hsiang-Yen Su; Te-Jin Chow; Tse-Min Lee; Wen-Hsi Cheng; Jo-Shu Chang; Hsien-Jung Chen. 2020. "Engineering cyanobacteria with enhanced growth in simulated flue gases for high-yield bioethanol production." Biochemical Engineering Journal 165, no. : 107823.