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Lin-Lan Zhuang
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China

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Journal article
Published: 29 July 2021 in Water
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Inspired by plant transpiration, an attached microalgae−simulated plant system was designed to enhance the transpiration of reverse osmosis concentrated water (i.e., WROC) and realize the conversion of pollutants to microalgae biomass. The results showed that the production rate of clean water could reach as high as 14.84 L·m−2·day−1, which was significantly influenced by the humidity of the air and the growth status of the attached microalgae. Moreover, the enhancement of water evaporation by microalgae was more obvious under relatively low humidity. Pollutants, transported along with the water, could transform into microalgae biofilm or crystallize at the top of the microfiber. TN and TP transformation into biomass resources were maximized in 40% diluted WROC, with efficiencies of 60.91% and 38.49%, respectively. Of note, the accumulation of phosphorus in the micro-environment of attached microalgae may inhibit microalgal growth in the later stages of cultivation, owing to the relatively low movability. Hence, this system could be applied for high-efficiency wastewater purification, especially under high humidity. Wastewater dilution and periodic microalgae harvest could guarantee the attached microalgae growth and increase the pollutant-bioresource conversion rate.

ACS Style

Huifang Yu; Yanan Yang; Ting Yang; Qi Shi; Lin-Lan Zhuang. Enhanced Transpiration by Attached Microalgae-Simulated Plants for Zero-Discharge of Reverse Osmosis Concentrated Water (WROC). Water 2021, 13, 2058 .

AMA Style

Huifang Yu, Yanan Yang, Ting Yang, Qi Shi, Lin-Lan Zhuang. Enhanced Transpiration by Attached Microalgae-Simulated Plants for Zero-Discharge of Reverse Osmosis Concentrated Water (WROC). Water. 2021; 13 (15):2058.

Chicago/Turabian Style

Huifang Yu; Yanan Yang; Ting Yang; Qi Shi; Lin-Lan Zhuang. 2021. "Enhanced Transpiration by Attached Microalgae-Simulated Plants for Zero-Discharge of Reverse Osmosis Concentrated Water (WROC)." Water 13, no. 15: 2058.

Journal article
Published: 22 August 2020 in Science of The Total Environment
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The partially unsaturated constructed wetland was demonstrated to be able to enhance the oxygen supplement for the microbial nitrification. However, the fast gravity flow of wastewater on the smooth surface of substrate in unsaturated zone led to a short contact time between wastewater and biofilm on the surface of substrate for the microbial pollutant oxidation process. While, the strengthened oxygen supplement also consumed organic carbon, intensifying the shortage of electron donator for the denitrification process. To further enhance the efficiency of both nitrification and denitrification processes, two strategies were conducted as follows: (1) adding microfiber in unsaturated zone to extend the hydraulic retention time (HRT) and improve the oxygenating efficiency; (2) adding slow-release carbon source (Poly butylenes succinate, PBS) as electron donor in saturated zone for denitrification. Results showed that the ammonia oxidation efficiency reached up to 97.0% in the microfiber-enhanced constructed wetland. Additionally, adding microfiber provided more sites for microbes and increased the total number of microbes in unsaturated zone. The addition of PBS in the saturated zone obviously improved the denitrification efficiency with the total nitrogen (TN) removal rate raising from 20.6 ± 4.0% to 90.4 ± 2.7%, which excellently solved the problem of poor denitrification efficiency caused by low ratio of carbon to nitrogen (C/N). In conclusion, the association of microfiber and PBS in partially unsaturated constructed wetland finally accomplished the thorough nitrogen removal.

ACS Style

Xinhui Zheng; Jian Zhang; Mengting Li; Lin-Lan Zhuang. Optimization of the pollutant removal in partially unsaturated constructed wetland by adding microfiber and solid carbon source based on oxygen and carbon regulation. Science of The Total Environment 2020, 752, 141919 .

AMA Style

Xinhui Zheng, Jian Zhang, Mengting Li, Lin-Lan Zhuang. Optimization of the pollutant removal in partially unsaturated constructed wetland by adding microfiber and solid carbon source based on oxygen and carbon regulation. Science of The Total Environment. 2020; 752 ():141919.

Chicago/Turabian Style

Xinhui Zheng; Jian Zhang; Mengting Li; Lin-Lan Zhuang. 2020. "Optimization of the pollutant removal in partially unsaturated constructed wetland by adding microfiber and solid carbon source based on oxygen and carbon regulation." Science of The Total Environment 752, no. : 141919.

Review article
Published: 06 April 2020 in Bioresource Technology
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Non-suspended microalgae cultivation technology coupled with wastewater purification has received more scientific attention in recent decades. Since the non-suspended microalgae cultivation is quite different from the suspended ones, the following issues are compared in this study such as advantages and disadvantages, pollutant removal mechanisms and regulations, influential factors, and microalgae biomass accumulation. The analysis aims to support the further application of this technology. The median removal rates of COD, TN, TP, NH4+-N and NO3−-N were 91.6%, 78.2%, 87.5%, 93.2% and 81.7%, respectively, by non-suspended microalgae under the TN & TP load rates up to 150 mg·L−1·d−1. The main pathway for TN & TP removal is microalgae cell absorbance. Light intensity, pollutant composition and microalgae metabolic types are the major factors that influence pollutant removal and the lipid content of microalgae. Meanwhile the mechanism concerning how macro-outer conditions influence the micro-environment and further growth of non-suspended microalgae requires more investigation.

ACS Style

Lin-Lan Zhuang; Mengting Li; Huu Hao Ngo. Non-suspended microalgae cultivation for wastewater refinery and biomass production. Bioresource Technology 2020, 308, 123320 .

AMA Style

Lin-Lan Zhuang, Mengting Li, Huu Hao Ngo. Non-suspended microalgae cultivation for wastewater refinery and biomass production. Bioresource Technology. 2020; 308 ():123320.

Chicago/Turabian Style

Lin-Lan Zhuang; Mengting Li; Huu Hao Ngo. 2020. "Non-suspended microalgae cultivation for wastewater refinery and biomass production." Bioresource Technology 308, no. : 123320.

Journal article
Published: 29 February 2020 in Bioresource Technology Reports
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A tidal unsaturated constructed wetland (CWTU) was proposed to improve the oxygen supplement and ammonia oxidation without high energy consumption of aeration. A siphon effluent tube was imported in CWTU to form the tidal discharge, expose part substrate into air, and supply oxygen to the biofilm and the thin wastewater film on the surface of substance during wastewater treatment process. The results showed that NH4+-N removal rates in CWTUs ranged from 42.76% to 61.17%, much higher than that in conventional non-aeration CWNA (25.25%). The addition of hydrophilic material and COD in CWTU further improved nitrogen removal from 24.72% to 30.92%. Seen from the spatial distribution of pollutants and the relative functional gene abundance of bacteria community, it could be concluded that the tidal unsaturated section near the inlet played an important role in nitrogen removal. Increasing organic carbon supply was proposed to improve the denitrification function of the constant saturated section of CWTUs.

ACS Style

Lin-Lan Zhuang; Xiran Song; Jian Zhang. A novel tidal unsaturated constructed wetland for high-efficiency nitrogen removal of wastewater based on the oxygen regulation. Bioresource Technology Reports 2020, 10, 100410 .

AMA Style

Lin-Lan Zhuang, Xiran Song, Jian Zhang. A novel tidal unsaturated constructed wetland for high-efficiency nitrogen removal of wastewater based on the oxygen regulation. Bioresource Technology Reports. 2020; 10 ():100410.

Chicago/Turabian Style

Lin-Lan Zhuang; Xiran Song; Jian Zhang. 2020. "A novel tidal unsaturated constructed wetland for high-efficiency nitrogen removal of wastewater based on the oxygen regulation." Bioresource Technology Reports 10, no. : 100410.

Journal article
Published: 01 February 2020 in Water
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Subsurface flow constructed wetland (SSFCW) has been applied for wastewater treatment for several decades. In recent years, the combination of ferric-carbon micro-electrolysis (Fe/C-M/E) and SSFCW was proven to be an effective method of multifarious sewage treatment. However, Ferric substrate created a relatively reductive condition, decreased the oxidation efficiency of NH4+-N, and blocked the following denitrification process, which led to the low removal efficiencies of NH4+-N and total nitrogen (TN). In this study, partial aeration was introduced into the ferric-carbon micro-electrolysis SSFCW (Fe/C-M/E CW) system to solve the problem above. The water quality and nitrogen-related functional genes of bacteria on the surface of substrate were measured for mechanism exploration. The results showed that, the removal efficiencies of NH4+-N and total phosphorus (TP) in an aerated Fe/C-M/E CW system were 96.97% ± 6.06% and 84.62% ± 8.47%, much higher than 43.33% ± 11.27% and 60.16% ± 2.95% in the unaerated Fe/C-M/E CW systems. However, the TN removal in Fe/C-M/E CW system was not enhanced by aeration, which could be optimized by extending more anoxic section for denitrification.

ACS Style

Cheng Dong; Mengting Li; Lin-Lan Zhuang; Jian Zhang; Youhao Shen; Xiangzheng Li. The Improvement of Pollutant Removal in the Ferric-Carbon Micro-Electrolysis Constructed Wetland by Partial Aeration. Water 2020, 12, 389 .

AMA Style

Cheng Dong, Mengting Li, Lin-Lan Zhuang, Jian Zhang, Youhao Shen, Xiangzheng Li. The Improvement of Pollutant Removal in the Ferric-Carbon Micro-Electrolysis Constructed Wetland by Partial Aeration. Water. 2020; 12 (2):389.

Chicago/Turabian Style

Cheng Dong; Mengting Li; Lin-Lan Zhuang; Jian Zhang; Youhao Shen; Xiangzheng Li. 2020. "The Improvement of Pollutant Removal in the Ferric-Carbon Micro-Electrolysis Constructed Wetland by Partial Aeration." Water 12, no. 2: 389.

Journal article
Published: 12 November 2019 in Science of The Total Environment
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The presence of sufficient dissolved oxygen (DO) in a constructed wetland (CW) is vital to the process of removing ammonia nitrogen and organics from wastewater. To achieve total nitrogen removal, which is characterised by enhanced ammonia nitrogen removal, this study offers an efficient strategy to increase the oxygen supply by establishing constant unsaturated zones and baffles in simulating constructed wetlands (SCWs). Henceforth, this strategy is addressed as a partially unsaturated SCW. A centrally located high tube was set up inside the wetland to create an unsaturated zone at a higher level. The effectiveness of the unsaturated zone to supplement the oxygen content was evaluated by comparing with controls (an unaerated SCW and an aerated SCW). The results show the chemical oxygen demand removal rate (85 ± 6%) in the partially unsaturated SCW was equivalent to that in the aerated SCW (83 ± 6%), while the ammonia nitrogen removal rate was 11 times higher compared to that of the unaerated SCW. The removal potential of the partially unsaturated SCW under different HRT (hydraulic retention time)s (12, 24, and 36 h) was examined, and the 36 h-SCW performed the best in the removal of organics and nitrogen. The mechanisms behind the unsaturated zone strategy were studied by analysing water and microbe samples along the pathway. The results from the water quality indicators and the quantitative polymerase chain reactions along the pathway showed the unsaturated zone contributed to the removal of primary organics and ammonia nitrogen. The superior performance of unsaturated zone strategy was discussed further using the enrichment of ammonia-oxidising bacteria, mass of oxygen uptake, and baffle design. The results indicate that the amoA gene/16s rRNA gene abundance ratio and the oxygen uptake (336 ± 44 g m−3 d−1) in the partially unsaturated SCW was higher than that observed in the two controls.

ACS Style

Xinhui Zheng; Lin-Lan Zhuang; Jian Zhang; Xiangzheng Li; Qian Zhao; Xiran Song; Cheng Dong; Jiayi Liao. Advanced oxygenation efficiency and purification of wastewater using a constant partially unsaturated scheme in column experiments simulating vertical subsurface flow constructed wetlands. Science of The Total Environment 2019, 703, 135480 .

AMA Style

Xinhui Zheng, Lin-Lan Zhuang, Jian Zhang, Xiangzheng Li, Qian Zhao, Xiran Song, Cheng Dong, Jiayi Liao. Advanced oxygenation efficiency and purification of wastewater using a constant partially unsaturated scheme in column experiments simulating vertical subsurface flow constructed wetlands. Science of The Total Environment. 2019; 703 ():135480.

Chicago/Turabian Style

Xinhui Zheng; Lin-Lan Zhuang; Jian Zhang; Xiangzheng Li; Qian Zhao; Xiran Song; Cheng Dong; Jiayi Liao. 2019. "Advanced oxygenation efficiency and purification of wastewater using a constant partially unsaturated scheme in column experiments simulating vertical subsurface flow constructed wetlands." Science of The Total Environment 703, no. : 135480.

Journal article
Published: 27 February 2019 in Bioresource Technology Reports
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Attached microalgae cultivation for biomass/bioenergy production has been proposed these decades to avoid the energy-intensive harvest process. However, the external light could only propagate <200 μm in biofilm, which inhibits the growth of microalgae in deep layer. In this paper, the possibility of using inner light emitted by mix-cultured photobacteria for attached microalgae growth was investigated. The luminance of photobacteria gradually increased along with their growth. However, it would fade after approximately 14 h in one-time feed cultivation, which could be recovered by refreshing medium. By scattering photobacteria in the middle of microalgae, light emitted from photobacteria could be utilized for the photosynthesis of microalgae. It was found that the involvement of photobacteria could promote the algal biofilm growth from 9.6 mg to 11.5 mg under the natural condition for a 7-day cultivation, which needed to be further strengthened.

ACS Style

Lin-Lan Zhuang; Huifang Yu; Ting Yang; Shuo Sun; Jinyun Wang. A novel light source provided by photobacteria to improve the growth of microalgal biofilm. Bioresource Technology Reports 2019, 6, 138 -144.

AMA Style

Lin-Lan Zhuang, Huifang Yu, Ting Yang, Shuo Sun, Jinyun Wang. A novel light source provided by photobacteria to improve the growth of microalgal biofilm. Bioresource Technology Reports. 2019; 6 ():138-144.

Chicago/Turabian Style

Lin-Lan Zhuang; Huifang Yu; Ting Yang; Shuo Sun; Jinyun Wang. 2019. "A novel light source provided by photobacteria to improve the growth of microalgal biofilm." Bioresource Technology Reports 6, no. : 138-144.

Journal article
Published: 20 November 2018 in Chemical Engineering Journal
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The application of subsurface-flow constructed wetlands (SSFCWs) has been restricted by the low nitrogen and phosphorus removal efficiency for several decades. Ferric-Carbon Micro-Electrolysis (Fe/C-M/E) system has gained increasing attention due to its high redox capacity and the function of adsorption and flocculation. Therefore, to apply Fe/C-M/E process in SSFCWs is a promising approach to enhance the removal efficiency of nitrogen and phosphorus of domestic sewage. In this study, a micro-electrolysis-intensified subsurface-flow constructed wetlands (ME-SSFCWs) including iron scraps and biochar were operated to investigate the effect of micro-electrolysis-substrate on nitrogen and phosphorus removal performance together with the related kinetics and possible pathways. The results showed that the removal efficiency of NO3--N, total nitrogen (TN) and phosphorus by ME-SSFCWs were 99.54±0.80%, 81.45±1.27% and 93.63±5.30%, respectively, for a 3-day hydraulic retention time (HRT), which were much higher than that of the ordinary SSFCWs (NO3--N: 37%; TN: 38%; TP: 39%) and biochar-added SSFCWs (NO3--N: 57%; TN: 54%; TP: 21%). These results indicated that micro-electrolysis could supply electrons for the denitrification. Besides, the improvement of phosphorus removal efficiency was due to the galvanic corrosion of numerous micro-scale sacrificial anodes which caused precipitation, adsorption and flocculation of phosphorus. Microbial analysis via real-time quantitative PCR Detecting System (qPCR) revealed that associated microbial abundance could dramatically increase due to the addition of Fe/C-M/E material substrate.

ACS Style

Youhao Shen; Linlan Zhuang; Jian Zhang; Jinlin Fan; Ting Yang; Shuo Sun. A study of ferric-carbon micro-electrolysis process to enhance nitrogen and phosphorus removal efficiency in subsurface flow constructed wetlands. Chemical Engineering Journal 2018, 359, 706 -712.

AMA Style

Youhao Shen, Linlan Zhuang, Jian Zhang, Jinlin Fan, Ting Yang, Shuo Sun. A study of ferric-carbon micro-electrolysis process to enhance nitrogen and phosphorus removal efficiency in subsurface flow constructed wetlands. Chemical Engineering Journal. 2018; 359 ():706-712.

Chicago/Turabian Style

Youhao Shen; Linlan Zhuang; Jian Zhang; Jinlin Fan; Ting Yang; Shuo Sun. 2018. "A study of ferric-carbon micro-electrolysis process to enhance nitrogen and phosphorus removal efficiency in subsurface flow constructed wetlands." Chemical Engineering Journal 359, no. : 706-712.

Review
Published: 28 September 2018 in Water
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It is widely believed that constructed wetlands (CWs) own great potentiality as polishing wastewater treatment methods for removing carbamazepine (CBZ). Although the typical CBZ removal efficiencies in CWs are quite low, the CBZ removal performance could be improved to some extend by optimizing the CW design parameters. A comparison of current relevant studies indicates that horizontal sub-surface flow CWs (HSSF-CWs) and hybrid wetlands are attracting more interest for the treatment of CBZ wastewater. According to CBZ’s physicochemical properties, substrate adsorption (25.70–57.30%) and macrophyte uptake (22.30–51.00%) are the two main CBZ removal pathways in CWs. The CBZ removal efficiency of CWs employing light expanded clay aggregate (LECA) as a substrate could reach values higher than 90%, and the most favorable macrophyte species is Iris sibirica, which has shown the highest total CBZ assimilation capacity. Several methods for enhancement have been proposed to optimize CBZ removal in CWs, including development of hydraulic models for optimization of CW operation, introduction of extra new CBZ removal ways into CW through substrate modification, design of combined/integrated CW, etc.

ACS Style

Xinhan Chen; Zhen Hu; Yijin Zhang; Linlan Zhuang; Jian Zhang; Jing Li; Hongying Hu. Removal Processes of Carbamazepine in Constructed Wetlands Treating Secondary Effluent: A Review. Water 2018, 10, 1351 .

AMA Style

Xinhan Chen, Zhen Hu, Yijin Zhang, Linlan Zhuang, Jian Zhang, Jing Li, Hongying Hu. Removal Processes of Carbamazepine in Constructed Wetlands Treating Secondary Effluent: A Review. Water. 2018; 10 (10):1351.

Chicago/Turabian Style

Xinhan Chen; Zhen Hu; Yijin Zhang; Linlan Zhuang; Jian Zhang; Jing Li; Hongying Hu. 2018. "Removal Processes of Carbamazepine in Constructed Wetlands Treating Secondary Effluent: A Review." Water 10, no. 10: 1351.

Journal article
Published: 01 September 2018 in Renewable and Sustainable Energy Reviews
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Microalgae are promising feedstocks for food, feed, fuel, fertilizers, fine chemicals and other value-added products, and are considered of great potential in wastewater treatment. Convenient acquisition of the cultivated microalgal biomass or easy separation of microalgae from the treated effluents, however, are the prerequisites of these applications. Biomass harvesting and dewatering in traditional suspended cultivation systems are costly and energy intensive, since volumes of liquid medium needs to be separated from the obtained diluted microalgal biomass. Attached systems can effectively overcome such limitations by introducing substratum into the liquid medium for microalgae attachment, and the attached biomass with magnitudes higher solid content can be collected via simple and straightforward harvesting methods such as mechanical scraping. As an emerging field with less than ten years of research history, systematic information on microalgae attachment and attached systems for biomass production and wastewater treatment has not been thoroughly reviewed. This review, therefore, analyzed the two-step mechanisms of microalgae attachment, discussed the influencing factors of attached microalgal growth including properties of substratum, properties of microalgal cells, turbulence of liquid medium, frequency of biomass harvesting, etc., and their possible impacts on microalgal biofilm formation and biomass production in attached systems. Classification of attached microalgal systems based on different criteria such as substratum orientation, relative position of microalgal cells and the culturing medium, system scales and culturing medium, was summarized. Performances of attached microalgal systems for biomass production and wastewater treatment were evaluated, with commonly used parameters identified and compared as well. Recommendations for future theoretical research and practical applications were also addressed in the manuscript. This review could offer much useful information on microalgal attachment and attached systems for biomass production and wastewater treatment, and may serve as guidance for future studies in related fields.

ACS Style

Jing-Han Wang; Lin-Lan Zhuang; Xue-Qiao Xu; Victor M. Deantes-Espinosa; Xiao-Xiong Wang; Hong-Ying Hu. Microalgal attachment and attached systems for biomass production and wastewater treatment. Renewable and Sustainable Energy Reviews 2018, 92, 331 -342.

AMA Style

Jing-Han Wang, Lin-Lan Zhuang, Xue-Qiao Xu, Victor M. Deantes-Espinosa, Xiao-Xiong Wang, Hong-Ying Hu. Microalgal attachment and attached systems for biomass production and wastewater treatment. Renewable and Sustainable Energy Reviews. 2018; 92 ():331-342.

Chicago/Turabian Style

Jing-Han Wang; Lin-Lan Zhuang; Xue-Qiao Xu; Victor M. Deantes-Espinosa; Xiao-Xiong Wang; Hong-Ying Hu. 2018. "Microalgal attachment and attached systems for biomass production and wastewater treatment." Renewable and Sustainable Energy Reviews 92, no. : 331-342.

Journal article
Published: 01 January 2018 in Bioresource Technology
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Microalgae are potential candidates for the production of valuable products, such as renewable biodiesel, health products and pigments. However, low biomass productivity has restricted their large-scale applications. In this study, the effects of two auxins (one natural type of indole-3-acetic acid (IAA) and the other synthetic type of 2,4-dichlorophenoxyacetic acid (2,4-D)) on the growth and fatty acid methyl esters (FAMEs) production of a freshwater microalgae Scenedesmus sp. LX1 were investigated. Both auxins showed a “low dosage-promotion and high dosage-inhibition” effect on the growth and FAMEs accumulation. The optimum dosage of IAA and 2,4-D were 1 mg L−1 and 0.1 mg L−1, respectively. Moreover, the IAA could increase the monounsaturated fatty acid content. The auxins may promote the growth by enhancing the photosynthetic activity through increasing chlorophyll contents. Therefore, auxin significantly enhanced microalgal growth and FAMEs accumulation, and has a potential for application in developing efficient microalgal cultivation. © 2017

ACS Style

Guo-Hua Dao; Guangxue Wu; Xiao-Xiong Wang; Lin-Lan Zhuang; Tian-Yuan Zhang; Hong-Ying Hu. Enhanced growth and fatty acid accumulation of microalgae Scenedesmus sp. LX1 by two types of auxin. Bioresource Technology 2018, 247, 561 -567.

AMA Style

Guo-Hua Dao, Guangxue Wu, Xiao-Xiong Wang, Lin-Lan Zhuang, Tian-Yuan Zhang, Hong-Ying Hu. Enhanced growth and fatty acid accumulation of microalgae Scenedesmus sp. LX1 by two types of auxin. Bioresource Technology. 2018; 247 ():561-567.

Chicago/Turabian Style

Guo-Hua Dao; Guangxue Wu; Xiao-Xiong Wang; Lin-Lan Zhuang; Tian-Yuan Zhang; Hong-Ying Hu. 2018. "Enhanced growth and fatty acid accumulation of microalgae Scenedesmus sp. LX1 by two types of auxin." Bioresource Technology 247, no. : 561-567.

Journal article
Published: 01 November 2017 in Bioresource Technology
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Heterotrophic cultivation of Chlorella pyrenoidosa based on straw substrate was proposed as a promising approach in this research. The straw pre-treated by ammonium sulfite method was enzymatically hydrolyzed for medium preparation. The highest intrinsic growth rate of C. pyrenoidosa reached to 0.097 h−1 in hydrolysate medium, which was quicker than that in glucose medium. Rising nitrogen concentration could significantly increase protein content and decrease lipid content in biomass, meanwhile fatty acids composition kept stable. The highest protein and lipid content in microalgal biomass reached to 62% and 32% under nitrogen excessive and deficient conditions, respectively. Over 40% of amino acids and fatty acids in biomass belonged to essential amino acids (EAA) and essential fatty acids (EFA), which were qualified for high-value uses. This research revealed the rapid biomass accumulation property of C. pyrenoidosa in straw hydrolysate medium and the effectiveness of nitrogen regulation to biomass composition at heterotrophic condition. © 2017

ACS Style

Tian-Yuan Zhang; Xiao-Xiong Wang; Yin-Hu Wu; Jing-Han Wang; Victor M. Deantes-Espinosa; Lin-Lan Zhuang; Hong-Ying Hu; Guang-Xue Wu. Using straw hydrolysate to cultivate Chlorella pyrenoidosa for high-value biomass production and the nitrogen regulation for biomass composition. Bioresource Technology 2017, 244, 1254 -1260.

AMA Style

Tian-Yuan Zhang, Xiao-Xiong Wang, Yin-Hu Wu, Jing-Han Wang, Victor M. Deantes-Espinosa, Lin-Lan Zhuang, Hong-Ying Hu, Guang-Xue Wu. Using straw hydrolysate to cultivate Chlorella pyrenoidosa for high-value biomass production and the nitrogen regulation for biomass composition. Bioresource Technology. 2017; 244 ():1254-1260.

Chicago/Turabian Style

Tian-Yuan Zhang; Xiao-Xiong Wang; Yin-Hu Wu; Jing-Han Wang; Victor M. Deantes-Espinosa; Lin-Lan Zhuang; Hong-Ying Hu; Guang-Xue Wu. 2017. "Using straw hydrolysate to cultivate Chlorella pyrenoidosa for high-value biomass production and the nitrogen regulation for biomass composition." Bioresource Technology 244, no. : 1254-1260.

Journal article
Published: 01 October 2016 in Bioresource Technology
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The role of bacteria/extracellular polymeric substances (EPS) coated carriers on attached microalgae growth in suspended-solid phase photobioreactor (sspBR) was assessed in this study. The results showed that pre-coating cotton with ambient bacteria and their EPS improved the attached microalgal growth by as much as 230% in terms of attached microalgae density. Additionally, the single cell dry weight, chemical composition and oxygen evolving activity of attached microalgae were significantly affected by the presence of bacteria/EPS coating on the cotton carriers. The protein content of microalgae cells cultivated in the ssPBRs with carriers coated by bacteria and sterilized bacteria were on average 26% and 15% more than uncoated carriers, respectively. Through absorbing and immobilizing nutrients from the bulk medium, the bacteria/EPS coating provided the attached microalgae with nitrogen/phosphorus for protein synthesis, especially during the late stages of batch cultivation. (C) 2016 Elsevier Ltd. All rights reserved.

ACS Style

Lin-Lan Zhuang; Yaldah Azimi; Dawei Yu; Wenlong Wang; Yin-Hu Wu; Guo-Hua Dao; Hong-Ying Hu. Enhanced attached growth of microalgae Scenedesmus. LX1 through ambient bacterial pre-coating of cotton fiber carriers. Bioresource Technology 2016, 218, 643 -649.

AMA Style

Lin-Lan Zhuang, Yaldah Azimi, Dawei Yu, Wenlong Wang, Yin-Hu Wu, Guo-Hua Dao, Hong-Ying Hu. Enhanced attached growth of microalgae Scenedesmus. LX1 through ambient bacterial pre-coating of cotton fiber carriers. Bioresource Technology. 2016; 218 ():643-649.

Chicago/Turabian Style

Lin-Lan Zhuang; Yaldah Azimi; Dawei Yu; Wenlong Wang; Yin-Hu Wu; Guo-Hua Dao; Hong-Ying Hu. 2016. "Enhanced attached growth of microalgae Scenedesmus. LX1 through ambient bacterial pre-coating of cotton fiber carriers." Bioresource Technology 218, no. : 643-649.

Journal article
Published: 01 July 2016 in Renewable and Sustainable Energy Reviews
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Microalgae-based bioenergy has been long considered as a promising substitute to replace the fossil fuels at large-scale. After the decades of research, several bottlenecks remain to be overcome to make the large-scale production of microalgal bioenergy commercially viable. In this review, the bottlenecks that restrict the commercial production of microalgal bioenergy are summarized as "high cost" and "low efficiency" and then identified in detailed categories. Several solutions which aim to solve the bottlenecks are presented and discussed correspondingly. The solutions presented in this review including cultivating in wastewater, recycling water and nutrients, utilizing the whole biomass, selecting indigenous strains, cultivating mixed-species, supplementing low-cost organic substrates, mixing vertically in reactor, optimizing metabolic pathway and attaching the cells on suspended-solids. Furthermore, a novel system integrated with the solutions, which is combined with the wastewater treatment system and characterized as the mixed-species cultivation of wild-selected mixotrophic microalgal strains in suspended-solid phase bioreactor based on low-cost substrate, is proposed to promote the scale-up of the microalgal cultivation for bioenergy production. (C) 2016 Elsevier Ltd. All rights reserved.

ACS Style

Tian-Yuan Zhang; Hong-Ying Hu; Yin-Hu Wu; Lin-Lan Zhuang; Xue-Qiao Xu; Xiao-Xiong Wang; Guo-Hua Dao. Promising solutions to solve the bottlenecks in the large-scale cultivation of microalgae for biomass/bioenergy production. Renewable and Sustainable Energy Reviews 2016, 60, 1602 -1614.

AMA Style

Tian-Yuan Zhang, Hong-Ying Hu, Yin-Hu Wu, Lin-Lan Zhuang, Xue-Qiao Xu, Xiao-Xiong Wang, Guo-Hua Dao. Promising solutions to solve the bottlenecks in the large-scale cultivation of microalgae for biomass/bioenergy production. Renewable and Sustainable Energy Reviews. 2016; 60 ():1602-1614.

Chicago/Turabian Style

Tian-Yuan Zhang; Hong-Ying Hu; Yin-Hu Wu; Lin-Lan Zhuang; Xue-Qiao Xu; Xiao-Xiong Wang; Guo-Hua Dao. 2016. "Promising solutions to solve the bottlenecks in the large-scale cultivation of microalgae for biomass/bioenergy production." Renewable and Sustainable Energy Reviews 60, no. : 1602-1614.

Review
Published: 01 June 2016 in Renewable and Sustainable Energy Reviews
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Nowadays, microalgae-based bioenergy has been commonly considered as a potential substitute of the non-renewable traditional energy resources with increasing attention. Nevertheless, microalgal cells will secrete/release some Soluble Algal Products (SAPs) into the culture medium during microalgal biomass cultivation. Studies on the influences, especially the negative ones, of SAPs in large-scale cultivation of microalgae for biomass/bioenergy production remain limited. The negative effects, properties, production and treatments of SAPs were therefore investigated and summarized in this paper. It was found that SAPs may inhibit microalgal growth, raise the cost of microalgal recovery and lower the performance of the downstream discharged water treatment process after microalgal cultivation, among others. The production of SAPs could be as high as 70 mg/L in terms of dissolved organic carbon (DOC), causing substantial environmental issues. The chemical properties of SAPs significantly varied among different microalgal species, growth phases and nutrient concentrations. The distribution of molecular weight of SAPs varied from less than 1 kDa to more than 100 kDa, meanwhile the hydrophilic/hydrophobic property of SAPs showed a consistency. All studies showed that more than 60% of SAPs are hydrophilic. After comparing three different SAPs treatment methods, it was concluded that biodegradation could be a feasible and economical process to remove SAPs based on the properties of SAPs. The mechanisms of SAPs formation and the mitigation of their undesirable effects are still not clear. Therefore, a systematic and deep study on those topics is urgently needed.

ACS Style

Lin-Lan Zhuang; Yin-Hu Wu; Victor Manuel Deantes Espinosa; Tian-Yuan Zhang; Guo-Hua Dao; Hong-Ying Hu. Soluble Algal Products (SAPs) in large scale cultivation of microalgae for biomass/bioenergy production: A review. Renewable and Sustainable Energy Reviews 2016, 59, 141 -148.

AMA Style

Lin-Lan Zhuang, Yin-Hu Wu, Victor Manuel Deantes Espinosa, Tian-Yuan Zhang, Guo-Hua Dao, Hong-Ying Hu. Soluble Algal Products (SAPs) in large scale cultivation of microalgae for biomass/bioenergy production: A review. Renewable and Sustainable Energy Reviews. 2016; 59 ():141-148.

Chicago/Turabian Style

Lin-Lan Zhuang; Yin-Hu Wu; Victor Manuel Deantes Espinosa; Tian-Yuan Zhang; Guo-Hua Dao; Hong-Ying Hu. 2016. "Soluble Algal Products (SAPs) in large scale cultivation of microalgae for biomass/bioenergy production: A review." Renewable and Sustainable Energy Reviews 59, no. : 141-148.

Journal article
Published: 14 May 2015 in Water Supply
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Water recycling is an effective way to reduce water consumption in the industrialization of microalgae-based biomass/bioenergy production. The soluble algal products (SAP) which inhibit the microalgae growth will accumulate in the recycled water. Therefore, the ozone oxidation treatment of SAP produced by Scenedesmus sp. LX1 was studied to reduce the inhibition of SAP. The experimental results showed that there was almost no change in the content of SAP (counted by dissolved organic carbon) after ozonation, but the inhibition of SAP on microalgae growth disappeared. The intrinsic growth rate (r) of Scenedesmus sp. LX1 in the cultivation solution containing untreated SAP was 0.52 d−1, and it rose to 0.95 d−1 after SAP was ozonized. The maximum population growth rate (Rmax) followed a similar trend, increasing from 9.19 × 105 to 13.0 × 105 cells mL−1 d−1. It was suggested that the changes of fluorescence and hydrophilic–hydrophobic/acid–base property of SAP after ozonation leads to the disappearance of SAP inhibition on microalgae growth.

ACS Style

Lin-Lan Zhuang; Yin-Hu Wu; Xiao-Jie Shi; Tian-Yuan Zhang; Hong-Ying Hu. Using ozonation to eliminate the inhibition of soluble algal products (SAP) of Scenedesmus sp. LX1 on its growth in microalgal cultivation for biomass/bioenergy production. Water Supply 2015, 15, 1034 -1039.

AMA Style

Lin-Lan Zhuang, Yin-Hu Wu, Xiao-Jie Shi, Tian-Yuan Zhang, Hong-Ying Hu. Using ozonation to eliminate the inhibition of soluble algal products (SAP) of Scenedesmus sp. LX1 on its growth in microalgal cultivation for biomass/bioenergy production. Water Supply. 2015; 15 (5):1034-1039.

Chicago/Turabian Style

Lin-Lan Zhuang; Yin-Hu Wu; Xiao-Jie Shi; Tian-Yuan Zhang; Hong-Ying Hu. 2015. "Using ozonation to eliminate the inhibition of soluble algal products (SAP) of Scenedesmus sp. LX1 on its growth in microalgal cultivation for biomass/bioenergy production." Water Supply 15, no. 5: 1034-1039.

Journal article
Published: 01 February 2014 in Bioresource Technology
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A novel suspended-solid phase photobioreactor (ssPBR) was proposed in this paper to solve the problem of microalgal expensive and complex harvest system for biomass/biofuel production. In this ssPBR, solid carriers were added and kept suspended by aeration. Part of microalgae could attach and grow on the carriers. By catching carriers, microalgae could easily be separated from liquid phase. Three kinds of Carriers A, B, C made of cotton, mohair and linen, respectively, were used in this study. Compared with the reactor without carriers, the biomass production in each ssPBR was increased by adding these three kinds of carriers at a dosage of 2g/L, and the maximum increments of biomass were 2.2×10(5) (10.3%), 7.8×10(4) (3.9%) and 4.4×10(5) (20.5%)cells/mL, respectively. By increasing the dosage of Carriers-C to 4g/L, the maximum increment of microalgal biomass could reach up to about 30% in the ssPBR compared with control group.

ACS Style

Lin-Lan Zhuang; Hong-Ying Hu; Yin-Hu Wu; Ting Wang; Tian-Yuan Zhang. A novel suspended-solid phase photobioreactor to improve biomass production and separation of microalgae. Bioresource Technology 2014, 153, 399 -402.

AMA Style

Lin-Lan Zhuang, Hong-Ying Hu, Yin-Hu Wu, Ting Wang, Tian-Yuan Zhang. A novel suspended-solid phase photobioreactor to improve biomass production and separation of microalgae. Bioresource Technology. 2014; 153 ():399-402.

Chicago/Turabian Style

Lin-Lan Zhuang; Hong-Ying Hu; Yin-Hu Wu; Ting Wang; Tian-Yuan Zhang. 2014. "A novel suspended-solid phase photobioreactor to improve biomass production and separation of microalgae." Bioresource Technology 153, no. : 399-402.