1
|
Yan H, Gu Z, Zhang Q, Wang Y, Cui X, Liu Y, Yu Z, Ruan R. Detoxification of copper and zinc from anaerobic digestate effluent by indigenous bacteria: Mechanisms, pathways and metagenomic analysis. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133993. [PMID: 38461661 DOI: 10.1016/j.jhazmat.2024.133993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/05/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
The presence of organic-complexed copper and zinc in anaerobic digestate effluent (ADE) poses persistent ecological toxicity. This study investigated the detoxification performance and biotic responses of indigenous bacteria against ethylene diamine tetraacetic acid (EDTA)-complexed Cu(II) and Zn(II). Heavy metals (HMs) stress induced reactive oxygen species (ROS) generation and enhanced extracellular polymeric substances (EPS) secretion. At a Cu(II) influent concentration of 20.0 mg·L-1, indigenous bacteria removed 88.2% of Cu(II) within nine days. The majority of copper and zinc sequestered by bacteria were stored in the cell envelope, with over 50% of copper and 60% of zinc being immobilized. Transmission electron microscopy mapping (TEM-mapping) revealed significant mineralization of copper and zinc on the cell wall. Proteins abundant in EPS, alongside humic acid-like substances, effectively adsorbed HMs. Indigenous bacteria exhibited the capacity to reduce cupric to the cuprous state and cupric is preferentially reduced to cuprous before reaching reducing capacity saturation. Sulfur precipitation emerges as a crucial pathway for Zn(II) removal. Metagenomic analysis indicated that indigenous bacteria upregulated genes related to HMs homeostasis, efflux, and DNA repair, enhancing its resistance to high concentrations HMs. This study provided theoretical guidance for employing bacterial consortia to eliminate HMs in complex aquatic environments.
Collapse
Affiliation(s)
- Hongbin Yan
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Zhiqiang Gu
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Qi Zhang
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China.
| | - Yunpu Wang
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Xian Cui
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Zhigang Yu
- Advanced Water Management Centre, The University of Queensland, Brisbane 4072, Australia
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
| |
Collapse
|
2
|
Huang L, Zhao X, Wu K, Liang C, Liu J, Yang H, Yin F, Wang C, Yang B, Zhang W. Enhancing biomass and lipid accumulation by a novel microalga for unsterilized piggery biogas slurry remediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33179-z. [PMID: 38625472 DOI: 10.1007/s11356-024-33179-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 03/28/2024] [Indexed: 04/17/2024]
Abstract
The cost and efficiency of an algal-BS treatment system are determined by the specific microalgal species and BS pretreatment method. This study examines the growth of a novel algae Chlorella sp. YSD-2 and the removal of nutrients from the BS using different pretreatment methods, including dilution ratio and sterilization. The highest biomass production (1.84 g L-1) was achieved in the 1:2 unsterilized biogas slurry, which was 2.03 times higher than that in the sterilized group, as well as higher lipid productivity (17.29 mg L-1 d-1). Nevertheless, the sterilized biogas slurry at a 1:1 dilution ratio exhibited the most notable nutrient-removal efficiency, with COD at 71.97%, TP at 91.32%, and TN at 88.80%. Additionally, the analysis of 16S rRNA sequencing revealed a significant alteration in the indigenous bacterial composition of the biogas slurry by microalgal treatment, with Proteobacteria and Cyanobacteria emerging as the predominant phyla, and unidentified_Cyanobacteria as the primary genus. These findings suggest that Chlorella sp. YSD-2 exhibits favorable tolerance and nutrient-removal capabilities in unsterilized, high-strength biogas slurry, along with high productivity of biomass and lipids. Consequently, these results offer a theoretical foundation for the development of an efficient and economically viable treatment method for algal-BS.
Collapse
Affiliation(s)
- Li Huang
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Faculty of Environment and Chemical Engineering, Kunming Metallurgy College, Kunming, 650000, People's Republic of China
| | - Xingling Zhao
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Kai Wu
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Chengyue Liang
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Jing Liu
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Hong Yang
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Fang Yin
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Changmei Wang
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Bin Yang
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China
| | - Wudi Zhang
- Faculty of Energy and Environment, Yunnan Normal University, No. 768, Juxian Street, Chenggong DistrictYunnan Province, Kunming, 650500, People's Republic of China.
- Yunnan Research Center of Biogas Technology and Engineering, Kunming, 650500, People's Republic of China.
| |
Collapse
|
3
|
Wang Q, Higgins B, Fallahi A, Wilson AE. Engineered algal systems for the treatment of anaerobic digestate: A meta-analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120669. [PMID: 38520852 DOI: 10.1016/j.jenvman.2024.120669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/25/2024]
Abstract
The objective of this review was to provide quantitative insights into algal growth and nutrient removal in anaerobic digestate. To synthesize the relevant literature, a meta-analysis was conducted using data from 58 articles to elucidate key factors that impact algal biomass productivity and nutrient removal from anaerobic digestate. On average, algal biomass productivity in anaerobic digestate was significantly lower than that in synthetic control media (p < 0.05) but large variation in productivity was observed. A mixed-effects multiple regression model across study revealed that biological or chemical pretreatment of digestate significantly increase productivity (p < 0.001). In contrast, the commonly used practice of digestate dilution was not a significant factor in the model. High initial total ammonia nitrogen suppressed algal growth (p = 0.036) whereas initial total phosphorus concentration, digestate sterilization, CO2 supplementation, and temperature were not statistically significant factors. Higher growth corresponded with significantly higher NH4-N and phosphorus removal with a linear relationship of 6.4 mg NH4-N and 0.73 mg P removed per 100 mg of algal biomass growth (p < 0.001). The literature suggests that suboptimal algal growth in anaerobic digestate could be due to factors such as turbidity, high free ammonia, and residual organic compounds. This analysis shows that non-dilution approaches, such as biological or chemical pretreatment, for alleviating algal inhibition are recommended for algal digestate treatment systems.
Collapse
Affiliation(s)
- Qichen Wang
- Biosystems Engineering, Auburn University, Auburn, AL, 36849, USA.
| | - Brendan Higgins
- Biosystems Engineering, Auburn University, Auburn, AL, 36849, USA
| | - Alireza Fallahi
- Biosystems Engineering, Auburn University, Auburn, AL, 36849, USA
| | - Alan E Wilson
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| |
Collapse
|
4
|
Gu Z, Yan H, Zhang Q, Wang Y, Liu C, Cui X, Liu Y, Yu Z, Wu X, Ruan R. Elimination of copper obstacle factor in anaerobic digestion effluent for value-added utilization: Performance and resistance mechanisms of indigenous bacterial consortium. WATER RESEARCH 2024; 252:121217. [PMID: 38335748 DOI: 10.1016/j.watres.2024.121217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
The presence of excessive residual Cu(II), a high-risk heavy metal with potential toxicity and biomagnification property, substantially impede the value-added utilization of anaerobic digestion effluent (ADE). This study adapted indigenous bacterial consortium (IBCs) to eliminate Cu(II) from ADE, and their performances and resistance mechanisms against Cu(II) were analyzed. Results demonstrated that when the Cu(II) exposure concentration exceeded 7.5 mg/L, the biomass of IBCs decreased significantly, cells produced a substantial amount of ROS and EPS, at which time the intracellular Cu(II) content gradually decreased, while Cu(II) accumulation within the EPS substantially increased. The combined features of a high PN/PS ratio, a reversed Zeta potential gradient, and abundant functional groups within EPS collectively render EPS a primary diffusion barrier against Cu(II) toxicity. Mutual physiological and metagenomics analyses reveal that EPS synthesis and secretion, efflux, DNA repair along with coordination between each other were the primary resistance mechanisms of IBCs against Cu(II) toxicity. Furthermore, IBCs exhibited enhanced resistance by enriching bacteria carrying relevant resistance genes. Continuous pretreatment of actual ADE with IBCs at a 10-day hydraulic retention time (HRT) efficiently eliminated Cu(II) concentration from 5.01 mg/L to ∼0.68 mg/L by day 2. This elimination remained stable for the following 8 days of operation, further validated their good Cu(II) elimination stability. Notably, supplementing IBCs with 200 mg/L polymerized ferrous sulfate significantly enhanced their settling performance. By elucidating the intricate interplay of Cu(II) toxicity and IBC resistance mechanisms, this study provides a theoretical foundation for eliminating heavy metal barriers in ADE treatment.
Collapse
Affiliation(s)
- Zhiqiang Gu
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Hongbin Yan
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Qi Zhang
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China.
| | - Yunpu Wang
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Cuixia Liu
- School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou 450007, PR China
| | - Xian Cui
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Zhigang Yu
- Australian Centre for Water and Environmental Biotechnology (formerly AWMC), The University of Queensland, Brisbane, QLD 4072, Australia
| | - Xiaodan Wu
- State Key Laboratory of Food Science and Resources, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, Saint Paul 55108, USA
| |
Collapse
|
5
|
Silva-Gálvez AL, López-Sánchez A, Camargo-Valero MA, Prosenc F, González-López ME, Gradilla-Hernández MS. Strategies for livestock wastewater treatment and optimised nutrient recovery using microalgal-based technologies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120258. [PMID: 38387343 DOI: 10.1016/j.jenvman.2024.120258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/24/2024]
Abstract
Global sustainable development faces several challenges in addressing the needs of a growing population. Regarding food industries, the heightening pressure to meet these needs has resulted in increased waste generation. Thus, recognising these wastes as valuable resources is crucial to integrating sustainable models into current production systems. For instance, the current 24 billion tons of nutrient-rich livestock wastewater (LW) generated yearly could be recovered and valorised via biological uptake through microalgal biomass. Microalgae-based livestock wastewater treatment (MbLWT) has emerged as an effective technology for nutrient recovery, specifically targeting carbon, nitrogen, and phosphorus. However, the viability and efficacy of these systems rely on the characteristics of LW, including organic matter and ammonium concentration, content of suspended solids, and microbial load. Thus, this systematic literature review aims to provide guidance towards implementing an integral MbLWT system for nutrient control and recovery, discussing several pre-treatments used in literature to overcome the challenges regarding LW as a suitable media for microalgae cultivation.
Collapse
Affiliation(s)
- Ana Laura Silva-Gálvez
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Laboratorio de Sostenibilidad y Cambio Climático, Av. General Ramón Corona 2514, Nuevo México, Zapopan, Jalisco, Mexico; BioResource Systems Research Group, School of Civil Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Anaid López-Sánchez
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Laboratorio de Sostenibilidad y Cambio Climático, Av. General Ramón Corona 2514, Nuevo México, Zapopan, Jalisco, Mexico
| | - Miller Alonso Camargo-Valero
- BioResource Systems Research Group, School of Civil Engineering, University of Leeds, Leeds, LS2 9JT, UK; Departamento de Ingeniería Química, Universidad Nacional de Colombia, Campus La Nubia, Manizales, Colombia
| | - Franja Prosenc
- BioResource Systems Research Group, School of Civil Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Martín Esteban González-López
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Laboratorio de Sostenibilidad y Cambio Climático, Av. General Ramón Corona 2514, Nuevo México, Zapopan, Jalisco, Mexico.
| | - Misael Sebastián Gradilla-Hernández
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Laboratorio de Sostenibilidad y Cambio Climático, Av. General Ramón Corona 2514, Nuevo México, Zapopan, Jalisco, Mexico.
| |
Collapse
|
6
|
Lu Q, Liu H, Sun Y, Li H. Combined zeolite-based ammonia slow-release and algae-yeast consortia to treat piggery wastewater: Improved nitrogen and carbon migration. BIORESOURCE TECHNOLOGY 2023; 387:129671. [PMID: 37579862 DOI: 10.1016/j.biortech.2023.129671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/16/2023]
Abstract
Integration of zeolite-based ammonia adsorption and algae-yeast consortia was developed to remediate piggery wastewater (PW) containing high concentrations of total ammonia nitrogen (TAN) and total organic carbon (TOC). After optimizing the conditions of ammonia adsorption in the PW. Zeolite addition mitigated ammonia toxicity, allowing zeolites to gradually release ammonia while effectively attenuating algal oxidative stress caused by high TAN concentration. Coupling zeolite-based adsorption and yeast co-incubation further increased TOC degradation and available C/N ratio, thus improving biomass (4.51 g/L), oil yield (2.11 g/L), and nutrient removal (84.18%-99.14%). The integrated microalgae-based PW treatment exhibited higher carbon migration into biomass (46.14%) and reduced treatment costs than conventional approaches. Simultaneously, the lowest carbon migration to wastewater also meant the smallest carbon emission into water bodies. These findings demonstrate that this novel strategy can remove nutrients in raw PW effectively and produce high oil-rich biomass in a sustainable and environmentally-friendly manner.
Collapse
Affiliation(s)
- Qian Lu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212100, China
| | - Hui Liu
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yan Sun
- Guangdong Institute of Eco-environmental Science & Technology, Guangzhou, Guangdong 510650, China
| | - Huankai Li
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
| |
Collapse
|
7
|
Leca MA, Michelena B, Castel L, Sánchez-Quintero Á, Sambusiti C, Monlau F, Le Guer Y, Beigbeder JB. Innovative and sustainable cultivation strategy for the production of Spirulina platensis using anaerobic digestates diluted with residual geothermal water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118349. [PMID: 37406495 DOI: 10.1016/j.jenvman.2023.118349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/26/2023] [Accepted: 06/06/2023] [Indexed: 07/07/2023]
Abstract
The following study investigates the possibility of growing the Spirulina platensis (S. platensis) cyanobacteria on two agro-industrial anaerobic digestion (AD) digestates diluted with geothermal water. The two digestates (FAWD: Food and Agricultural Wastes Digestate and CDD: Cheese Diary Digestate) were selected based on their different chemical characteristics, attributed to the type of feedstock and the operating conditions used during the AD process. In the first part of the study, a screening experiment was performed in 200 mL glass tubes to evaluate the appropriate dilution factor to generate the maximum S. platensis growth using both AD digestates individually and geothermal water as sustainable alternative dilution agent. Based on the different growth parameters measured, dilution rates of 5x and 40x were chosen for CDD and FAWD respectively, as a trade-off between growth performances and quantity of water to use. Volumetric productivities of 33 ± 1 mg/L/d and 56 ± 8 mg/L/d combined with maximal concentrations of 0.52 ± 0.02 g/L and 0.69 ± 0.02 g/L were achieved when cultivating S. platensis on CDD and FAWD, respectively. In the second part, the selected experimental results were scaled-up to 6 L flat panels bioreactors and S. platensis biomass productivities of 71 and 101 mg/L/d were obtained for CDD and FAWD, respectively using sodium bicarbonate as inorganic carbon source. When regulating the pH to 8.5 with carbon dioxide (CO2) injection, cultures were able to produce up to 1.13 g/L and 0.79 g/L of S. platensis corresponding to biomass productivities of 81 and 136 mg/L/d for CDD and FAWD, respectively. In addition, S. platensis properly assimilated the ammonium present in the digestate-based culture media, with removal efficiency up to 98% in the case of the CDD substrate. The characterization of the final S. platensis biomass revealed the presence of high concentration of carbohydrates (48.6-70.3 % of dry weight) in the culture supplemented with both AD digestates. The experimental findings show the potential of reusing liquid digestate, CO2 as well as geothermal water for the sustainable production of carbohydrate-rich S. platensis biomass.
Collapse
Affiliation(s)
- Marie-Ange Leca
- APESA, Pôle Valorisation, 3 Chemin de Sers, 64121, Montardon, France; SIAME, Université de Pau et Pays de l'Adour E2S UPPA - IPRA, 64000, Pau, France
| | | | - Lucie Castel
- APESA, Pôle Valorisation, 3 Chemin de Sers, 64121, Montardon, France
| | | | | | - Florian Monlau
- Total Energies, PERL - Pôle D' Etudes et de Recherche de Lacq, Pôle Economique 2, BP 47 - RD 817, 64170, Lacq, France
| | - Yves Le Guer
- SIAME, Université de Pau et Pays de l'Adour E2S UPPA - IPRA, 64000, Pau, France
| | | |
Collapse
|
8
|
Wang S, Zhao Q, Yu H, Du X, Zhang T, Sun T, Song W. Assessing the potential of Chlorella sp. phycoremediation liquid digestates from brewery wastes mixture integrated with bioproduct production. Front Bioeng Biotechnol 2023; 11:1199472. [PMID: 37388770 PMCID: PMC10303122 DOI: 10.3389/fbioe.2023.1199472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/05/2023] [Indexed: 07/01/2023] Open
Abstract
Digestates from different anaerobic digesters are promising substrates for microalgal culture, leading to effective wastewater treatment and the production of microalgal biomass. However, further detailed research is needed before they can be used on a large scale. The aims of this study were to investigate the culture of Chlorella sp. in DigestateM from anaerobic fermentation of brewer's grains and brewery wastewater (BWW) and to explore the potential use of the biomass produced under different experimental conditions, including diverse cultivation modes and dilution ratios. Cultivation in DigestateM initiated from 10% (v/v) loading, with 20% BWW, obtained maximum biomass production, reaching 1.36 g L-1 that was 0.27g L-1 higher than 1.09 g L-1 of BG11. In terms of DigestateM remediation, the maximum removal of ammonia nitrogen (NH4 +-N), chemical oxygen demand, total nitrogen, and total phosphorus reached 98.20%, 89.98%, 86.98%, and 71.86%, respectively. The maximum lipid, carbohydrate, and protein contents were 41.60%, 32.44%, and 27.72%, respectively. The growth of Chlorella sp. may be inhibited when the Y(II)-Fv/Fm ratio is less than 0.4.
Collapse
|
9
|
Chen J, Ren Z, Li Z, Wang B, Qi Y, Yan W, Liu Q, Song H, Han Q, Zhang L. Interaction of Scenedesmus quadricauda and native bacteria in marine biopharmaceutical wastewater for desirable lipid production and wastewater treatment. CHEMOSPHERE 2023; 313:137473. [PMID: 36481174 DOI: 10.1016/j.chemosphere.2022.137473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/28/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Improving knowledge of the alga-bacterium interaction can promote the wastewater treatment. The untreated marine biopharmaceutical wastewater (containing native bacteria) was used directly for culturing microalgae. Unlike previous studies on specific bacteria in algal-bacterial co-culture systems, the effect of native bacteria in wastewater on microalgae growth was investigated in this study. The results showed that the coexistence of native bacteria greatly promoted the microalgae growth, ultimately producing biomass of 0.64 g/L and biomass productivity of 56.18 mg/L·d. Moreover, the lipid accumulation in the algae + bacteria group was 1.31 and 1.13 times higher than those of BG11 and pure algae, respectively, mainly attributed to the fact that bacteria provided a good environment for microalgae growth by using extracellular substances released from microalgae for their own growth, and providing micromolecules of organic matter and other required elements to microalgae. This study would lay the theoretical foundation for improving biopharmaceutical wastewater treatment.
Collapse
Affiliation(s)
- Junren Chen
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Zian Ren
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Zheng Li
- Shandong Institute of Eco-environmental Planning, Jinan, 250101, China
| | - Bo Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Yuejun Qi
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Wenbao Yan
- Environmental Monitoring Station of Lanshan Branch of Rizhao Ecological and Environment Bureau, 539 Jiaodingshan Road, Rizhao, 276800, China
| | - Qingqing Liu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Hengyu Song
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Qingxiang Han
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Lijie Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
| |
Collapse
|
10
|
Luo X, Liu Y, Muhmood A, Zhang Q, Wang J, Ruan R, Wang Y, Cui X. Effect of time and temperature of pretreatment and anaerobic co-digestion of rice straw and swine wastewater by domesticated paddy soil microbes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 323:116218. [PMID: 36108514 DOI: 10.1016/j.jenvman.2022.116218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/27/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Rice straw and swine wastewater are abundant, easy to obtain, and inexpensive biomass materials. Anaerobic digestion of rice straw and swine wastewater effectively regulates the carbon-to-nitrogen ratio and also improves methane production efficiency. The dense lignocellulosic structure, unsuitable carbon-to-nitrogen ratio, and light texture of rice straw hinder its application in anaerobic digestion. Effective pretreatment technologies can improve degradation efficiency and methane production. Our study is the first to apply domesticated paddy soil microbes to enhance the efficiency of hydrolytic acidification of rice straw and swine wastewater at varying temperatures and times. The results show that the highest total organic carbon (1757.2 mg/L), soluble chemical oxygen demand (5341.7 mg/L), and organic acid concentration (4134.6 mg/L) appeared in the hydrolysate after five days of hydrolytic acidification at 37 °C. Moreover, the use of hydrolysate produced 13% more gas and reduced the anaerobic digestion period by ten days compared to the untreated control. This suggests that using domesticated paddy soil microbes as a pretreatment might be a sustainable and cost-effective strategy for improving the degradation efficacy and methane production from lignocellulosic materials.
Collapse
Affiliation(s)
- Xuan Luo
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, 330047, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, 330047, PR China
| | - Atif Muhmood
- Institute of Soil Chemistry & Environmental Sciences, AARI, Faisalabad, Pakistan
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, 330047, PR China
| | - Jingjing Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, 330047, PR China
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul, 55108, USA
| | - Yunpu Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, 330047, PR China.
| | - Xian Cui
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, 330047, PR China.
| |
Collapse
|
11
|
Li Y, Ye ZL, Yang R, Chen S. Synchronously recovering different nutrient ions from wastewater by using selective electrodialysis. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:2627-2641. [PMID: 36450677 DOI: 10.2166/wst.2022.352] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Digestive slurry normally contains various nutrient ions with high concentrations, including NH4+, PO43-, K+, Mg2+, Ca2+ and SO42-, which is a resource pool for nutrient recovery. In this study, a synchronously cationic and anionic selective electrodialysis (SCAE) was developed to recover anionic and cationic nutrient ions. Results showed that SCAE could synchronously recover more than 85.0%, 90.2% and 97.8% of PO43-, SO42- and other cations (including NH4+, K+, Ca2+, Mg2+) from the simulated digestive slurry, respectively. The ionic permeation sequence, NH4+ > K+ > Ca2+ > Mg2+ for cations, and SO42- > PO43- for anions, was affected by hydrated radius and hydration numbers, and did not alter despite the variation in electric field. High electrolyte concentration in the product streams would promote the recovery efficiency of both divalent cations and anions due to the ionic replacement effect and the demand for charge neutrality. Under continuous operation, the maximum concentrations of PO43-, SO42-, Mg2+, Ca2+, NH4+ and K+ in product streams reached 231.9, 496.6, 180.7, 604.3, 9,648.4 and 4,571.4 mg·L-1, respectively. By directly mixing different streams, the feasibility of producing mineral fertilizers without dosing externally precipitating chemicals was proved. Struvite, NH4HSO4 and potassium chloride minerals were produced successfully. The outcome provided an optional method for nutrient recovery from wastewater.
Collapse
Affiliation(s)
- Yenan Li
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen, Fujian 261021, China E-mail: ; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Long Ye
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen, Fujian 261021, China E-mail:
| | - Ruili Yang
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen, Fujian 261021, China E-mail: ; Yancheng Institute of Technology, Jiangsu, Yancheng 224051, China
| | - Shaohua Chen
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen, Fujian 261021, China E-mail:
| |
Collapse
|
12
|
Sichel-Crespo CM, Ortiz-Montoya EY, Caicedo-Ortega NH, Machuca-Martínez F. State of microalgae-based swine manure digestate treatment: An overview. Heliyon 2022; 8:e11256. [PMID: 36353151 PMCID: PMC9638745 DOI: 10.1016/j.heliyon.2022.e11256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/26/2022] [Accepted: 10/20/2022] [Indexed: 11/11/2022] Open
Abstract
Global pork production has an annual growth of approximately 2.1%, and its economic and environmental impact are related with the treatment of waste in the production chain. There is little evidence of research advances to generate alternatives for using these wastes. The lack of research related to microalgae cultivation using digestate produced by porcine residues generates negative environmental impact, inadequate and inefficient technologies, low recovery and use of waste and loss of value and competitiveness in the market. The available literature focuses mainly on the treatment of anaerobic digestion liquid effluents for the removal of components, but not on the generation of value-added products. Therefore, there is a need to collect the available information, analyze it and propose other new methodologies. This article presents the information obtained from conducting a systematic review of the literature with a bibliometric and a comparative analysis; achieving an analysis of the temporal and geographical distribution, the main topics, the most influential players, the degree of maturity of the research and different strategies collected for microalgae-based swine manure digestate treatment. In this way, it was possible to capture an overview of the current state of the development of research focused on the use of digestate for the cultivation of microalgae, visualizing important aspects as the evolution of publications, identifying China and USA as the main players in research, biomass and wastewater as potential topics also Spirulina, Astaxanthin and beta-carotene as the main products based on microalgae. Thus, achieving an structure, organized and synthesized landscape of scientific and technological knowledge available for the proposal of investigations that allow the use of anaerobic digestion liquid effluents as cultivation medium for microalgae. The biometric analysis and SAN provides an overview of the evolution of technology. China and the USA are the main players in the use of digestate in microalgae cultivation. Biomass and wastewater are trending topics in the microalgal application at the near future. Spirulina, Astaxanthin and beta-carotene as the main products based on market worldwide forecasting.
Collapse
Affiliation(s)
- Claudia M. Sichel-Crespo
- Departamento de Ingeniería Bioquímica, Facultad de Ingeniería, Universidad ICESI, Calle 18 No. 122-135, Cali 760031, Colombia
| | - Erika Y. Ortiz-Montoya
- Departamento de Ingeniería Bioquímica, Facultad de Ingeniería, Universidad ICESI, Calle 18 No. 122-135, Cali 760031, Colombia,Centro BioInc, Universidad Icesi, Calle 18 No. 122–135, Cali 760031, Colombia,Corresponding author.
| | - Nelson H. Caicedo-Ortega
- Departamento de Ingeniería Bioquímica, Facultad de Ingeniería, Universidad ICESI, Calle 18 No. 122-135, Cali 760031, Colombia,Centro BioInc, Universidad Icesi, Calle 18 No. 122–135, Cali 760031, Colombia
| | - Fiderman Machuca-Martínez
- Escuela de Ingeniería Química, Universidad del Valle, Calle 13 Nº100-00, Cali, Colombia,Centro de Excelencia en Nuevos Materiales, Universidad del Valle, Calle 13 Nº100-00, Cali, Colombia
| |
Collapse
|
13
|
Cai Y, Zhai L, Fang X, Wu K, Liu Y, Cui X, Wang Y, Yu Z, Ruan R, Liu T, Zhang Q. Effects of C/N ratio on the growth and protein accumulation of heterotrophic Chlorella in broken rice hydrolysate. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2022; 15:102. [PMID: 36209252 PMCID: PMC9547431 DOI: 10.1186/s13068-022-02204-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/29/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Microalgae protein is considered as a sustainable alternative to animal protein in the future. Using waste for microalgal culture can upgrade low-value raw materials into high-value products, helping to offset the cost of microalgal protein production. In this study we explored the feasibility of using microalgae heterotrophic fermentation to convert broken rice hydrolysate (BRH) into protein. RESULTS The results showed that the increase of BRH supplemental ratio was beneficial to the increase of biomass production but not beneficial to the increase of intracellular protein content. To further improve protein production, the effect of C/N ratio on intracellular protein accumulation was studied. It was found that low C/N ratio was beneficial to the synthesis of glutamate in microalgae cells, which in turn promoted the anabolism of other amino acids and further the protein. When the C/N ratio was 12:1, the biomass productivity and protein content could reach a higher level, which were 0.90 g/L/day and 61.56%, respectively. The obtained Chlorella vulgaris biomass was rich in essential amino acids (41.80%), the essential amino acid index was as high as 89.07, and the lysine content could reach up to 4.05 g/100 g. CONCLUSIONS This study provides a theoretical basis and guidance for using Chlorella vulgaris as an industrial fermentation platform to convert broken rice into products with high nutritional value.
Collapse
Affiliation(s)
- Yihui Cai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China
- College of Food Engineering, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Ligong Zhai
- College of Food Engineering, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Xiaoman Fang
- China Coal Zhejiang Testing Technology Co, Ltd., Hangzhou, 310000, China
| | - Kangping Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China.
| | - Xian Cui
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Yunpu Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China
| | - Zhigang Yu
- Australian Centre for Water and Environmental Biotechnology (Formerly AWMC), The University of Queensland, St. Lucia, Brisbane, QLD4072, Australia
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul MN, 55108, USA
| | - Tongying Liu
- Jiangxi Maternal and Child Health Hospital, Nanchang, 330006, Jiangxi, China
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China.
| |
Collapse
|
14
|
Eraky M, Elsayed M, Qyyum MA, Ai P, Tawfik A. A new cutting-edge review on the bioremediation of anaerobic digestate for environmental applications and cleaner bioenergy. ENVIRONMENTAL RESEARCH 2022; 213:113708. [PMID: 35724728 DOI: 10.1016/j.envres.2022.113708] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/05/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Circular agriculture and economy systems have recently emerged around the world. It is a long-term environmental strategy that promotes economic growth and food security while reducing negative environmental consequences. Anaerobic digestion (AD) process has a high contribution and effective biodegradation route for bio-wastes valorization and reducing greenhouse gases (GHGs) emissions. However, the remaining massive digestate by-product contains non-fermented organic fractions, macro and/or micro-nutrients, heavy metals, and metalloids. Direct application of digestate in agriculture negatively affected the properties of the soil due to the high load of nutrients as well as the residuals of GHGs are emitted to the environment. Recycling and valorizing of anaerobic digestate is the main challenge for the sustainable biogas industry and nutrients recovery. To date, there is no global standard process for the safe digestate handling. This review described the biochemical composition and separation processes of anaerobic digestate. Further, advanced physical, chemical, and biological remediation's of the diverse digestate are comprehensively discussed. Moreover, recycling technologies such as phyco-remediation, bio-floc, and entomoremediation were reviewed as promising solutions to enhance energy and nutrient recovery, making the AD technology more sustainable with additional profits. Finally, this review gives an in-depth discussion of current biorefinery technologies, key roles of process parameters, and identifies challenges of nutrient recovery from digestate and prospects for future studies at large scale.
Collapse
Affiliation(s)
- Mohamed Eraky
- College of Engineering, Huazhong Agricultural University, 430070, Wuhan, China
| | - Mahdy Elsayed
- Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613, Giza, Egypt
| | - Muhammad Abdul Qyyum
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman.
| | - Ping Ai
- College of Engineering, Huazhong Agricultural University, 430070, Wuhan, China.
| | - Ahmed Tawfik
- National Research Centre, Water Pollution Research Department, P.O. Box 12622, Giza, Egypt.
| |
Collapse
|
15
|
Shao H, Sun Y, Jiang X, Hu J, Guo C, Lu C, Guo F, Sun C, Wang Y, Dai C. Towards biomass production and wastewater treatment by enhancing the microalgae-based nutrients recovery from liquid digestate in an innovative photobioreactor integrated with dialysis bag. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115337. [PMID: 35642812 DOI: 10.1016/j.jenvman.2022.115337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/29/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Microalgae-based nutrients recovery from liquid anaerobic digestate of swine manure has been a hotspot in recent decades. Nevertheless, in consideration of the high NH4+-N content and poor light penetrability exhibited by the original liquid digestate, uneconomical pretreatment on liquid digestate including centrifugation and dilution are indispensable before microalgae cells inoculation. Herein, aiming at eliminating the energy-intensive and freshwater-consuming pretreatment on liquid digestate and enhancing microalgae growth, the dialysis bag which permits nutrients transferring across its wall surface whereas retains almost all matters characterized by impeding light transmission within the raw liquid digestate was integrated into a column photobioreactor (DB-PBR). Consequently, light availability of microalgae cells in DB-PBR was elevated remarkably and thus contributed to a 357.58% improvement on microalgae biomass concentration in DB-PBR than the conventional PBR under 80 μmol m-2 s-1. Likewise, superior nutrients removal efficiencies from liquid digestate were obtained in DB-PBR (NH4+-N: 74.84%, TP: 63.75%) over the conventional PBR (NH4+-N: 30.27%, TP: 16.86%). Furthermore, higher microalgae biomass concentration (1.87 g L-1) and nutrients removal efficiencies (NH4+-N: 95.12%, TP: 76.87%) were achieved in the DB-PBR by increasing the light intensity to 140 μmol m-2 s-1. More importantly, the DB-PBR may provide a simple and greener solution to purify other kinds of wastewater.
Collapse
Affiliation(s)
- Han Shao
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Yahui Sun
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China; School of Life Sciences, Nanjing Normal University, Nanjing, 210023, China; Hebei Provincial Lab of Water Environmental Sciences, Hebei Provincial Academy of Ecological and Environmental Sciences, Shijiazhuang, 050037, China.
| | - Xiaoxiang Jiang
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Jun Hu
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Chenglong Guo
- School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou, 221116, China
| | - Chenjia Lu
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Feihong Guo
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Chihe Sun
- Key Laboratory of Industrial Biotechnology of MOE, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Yunjun Wang
- Engineering Laboratory for Energy System Process Conversion & Emission Control Technology of Jiangsu Province, School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Chuanchao Dai
- School of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| |
Collapse
|
16
|
Enhancement of Carbon Conversion and Value-Added Compound Production in Heterotrophic Chlorella vulgaris Using Sweet Sorghum Extract. Foods 2022; 11:foods11172579. [PMID: 36076765 PMCID: PMC9455686 DOI: 10.3390/foods11172579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 12/03/2022] Open
Abstract
High-cost carbon sources are not economical or sustainable for the heterotrophic culture of Chlorella vulgaris. In order to reduce the cost, this study used sweet sorghum extract (SE) and its enzymatic hydrolysate (HSE) as alternative carbon sources for the heterotrophic culture of Chlorella vulgaris. Under the premise of the same total carbon concentration, the value-added product production performance of Chlorella vulgaris cultured in HSE (supplemented with nitrogen sources and minerals) was much better than that in the glucose medium. The conversion rate of the total organic carbon and the utilization rate of the total nitrogen were both improved in the HSE system. The biomass production and productivity using HSE reached 2.51 g/L and 0.42 g/L/d, respectively. The production of proteins and lipids using HSE reached 1.17 and 0.35 g/L, respectively, and the production of chlorophyll-a, carotenoid, and lutein using HSE reached 30.42, 10.99, and 0.88 mg/L, respectively. The medium cost using HSE decreased by 69.61% compared to glucose. This study proves the feasibility and practicability of using HSE as a carbon source for the low-cost heterotrophic culture of Chlorella vulgaris.
Collapse
|
17
|
Yan H, Lu R, Liu Y, Cui X, Wang Y, Yu Z, Ruan R, Zhang Q. Development of microalgae-bacteria symbiosis system for enhanced treatment of biogas slurry. BIORESOURCE TECHNOLOGY 2022; 354:127187. [PMID: 35439556 DOI: 10.1016/j.biortech.2022.127187] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
In this study, microalgae-bacteria consortia were developed using bacteria and microalgae isolated from biogas slurry for enhanced nutrients recovery and promoted microalgae growth in wastewater. The enhancement rate was introduced to quantify the interaction between bacteria and microalgae. Co-culture of the indigenous microalgae and bacteria could significantly improve the tolerance of microorganisms to pollutants, increase value-added products' production, promote nutrients removal, and reduce carbon emissions compared to mono-culture. The co-culture of Chlorella sp. GZQ001 and Lysinibacillus sp. SJX05 performed best, with its biomass, lipid, protein and fatty acid methyl ester productivities achieved 113.3, 19.2, 40.9 and 3.7 mg·L-1·d-1, respectively. The corresponding nutrients removal efficiencies for ammonia nitrogen, total nitrogen, total organic carbon, and total phosphorus were 83.2%, 82.1%, 34.0% and 76.6%, respectively. These results indicated that co-culture of certain indigenous bacteria and microalgae is beneficial to biogas slurry treatment and microalgae growth.
Collapse
Affiliation(s)
- Hongbin Yan
- Engineering Research Center for Biomass Conversion, MOE, Nanchang University, Nanchang 330047, China
| | - Rumeng Lu
- Engineering Research Center for Biomass Conversion, MOE, Nanchang University, Nanchang 330047, China
| | - Yuhuan Liu
- Engineering Research Center for Biomass Conversion, MOE, Nanchang University, Nanchang 330047, China
| | - Xian Cui
- Engineering Research Center for Biomass Conversion, MOE, Nanchang University, Nanchang 330047, China
| | - Yunpu Wang
- Engineering Research Center for Biomass Conversion, MOE, Nanchang University, Nanchang 330047, China
| | - Zhigang Yu
- Advanced Water Management Centre, The University of Queensland, Brisbane 4072, Australia
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
| | - Qi Zhang
- Engineering Research Center for Biomass Conversion, MOE, Nanchang University, Nanchang 330047, China.
| |
Collapse
|
18
|
López-Sánchez A, Silva-Gálvez AL, Zárate-Aranda JE, Yebra-Montes C, Orozco-Nunnelly DA, Carrillo-Nieves D, Gradilla-Hernández MS. Microalgae-mediated bioremediation of cattle, swine and poultry digestates using mono- and mixed-cultures coupled with an optimal mixture design. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
19
|
Cui B, Chen Z, Guo D, Liu Y. Investigations on the pyrolysis of microalgal-bacterial granular sludge: Products, kinetics, and potential mechanisms. BIORESOURCE TECHNOLOGY 2022; 349:126328. [PMID: 34780909 DOI: 10.1016/j.biortech.2021.126328] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
This study investigated the pyrolysis of microalgal-bacterial granular sludge for producing bio-oil and biochar. Results showed that the bio-oil productivity of pyrolyzed MBGS reached 39.5-45.4 wt%, while 23.8-41.2% for the nitrogen-containing bio-oil at the temperature of 673-1073 K. Meanwhile the biochar with a nitrogen content of 3.7-7.0 wt% could also be produced. Moreover, the Van-Krevelen diagram revealed that produced bio-oil had a H/C ratio higher than that from agroforestry biomass, but its O/C ratio was found to be similar to those of coal and biochar. It further appeared from a mass conservation analysis that the highest bio-oil production yield was achieved at a pyrolysis temperature of 773 K, while the pyrolytic kinetics of MBGS in the temperature range studied was governed by the 3-D diffusion mechanism with the activation energy of 224.96 kJ·mol-1.
Collapse
Affiliation(s)
- Baihui Cui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhihua Chen
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Xinxiang 453007, China
| | - Dabin Guo
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Yu Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| |
Collapse
|
20
|
Xiang S, Liu Y, Lu F, Zhang Q, Wang Y, Xiong J, Huang Z, Yu Z, Ruan R, Cui X. The combination of aerobic and microaerobic promote hydrolysis and acidification of rice straw and pig manure: Balance of insoluble and soluble substrate. BIORESOURCE TECHNOLOGY 2022; 350:126880. [PMID: 35202829 DOI: 10.1016/j.biortech.2022.126880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Separated hydrolysis and acidification is an effective pretreatment method for anaerobic digestion of lignocellulose. However, excess consumption of soluble substrates remains a problem. Rice straw and pig manure were used as substrates with biogas slurry as the inoculum, combined with aerobic and microaerobic conditions in the 14-day hydrolysis and acidification. Aeration can significantly accelerate volatile solid degradation (38.25%), especially the lignocellulose. Soluble chemical oxygen demand (29157 mg/L) and volatile fatty acids (13219 mg/L) of the group with 4 days aerobic treatment, reached their peaks on day 5, obtaining a balanced insoluble substrate degradation and soluble substrate consumption. Candida, Lactobacillus, Bifidobacterium, and Acetobacter were enriched at the balanced point for positive contribution to the degradation of the insoluble substrate and the generation of soluble substrate. This study not only reveals the balance between degradation and consumption, but also provides new insight into biogas slurry recycling and anaerobic digestion precursor substrate production.
Collapse
Affiliation(s)
- Shuyu Xiang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Feihu Lu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Yunpu Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China
| | - Jianghua Xiong
- Agricultural Ecology and Resources Protection Station of Jiangxi Province, Nanchang 330046, China
| | - Zhenxia Huang
- Agricultural Ecology and Resources Protection Station of Jiangxi Province, Nanchang 330046, China
| | - Zhigang Yu
- Advanced Water Management Centre, The University of Queensland, Brisbane 4072, Australia
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
| | - Xian Cui
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, PR China.
| |
Collapse
|
21
|
Al-Mallahi J, Ishii K. Attempts to alleviate inhibitory factors of anaerobic digestate for enhanced microalgae cultivation and nutrients removal: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 304:114266. [PMID: 34906810 DOI: 10.1016/j.jenvman.2021.114266] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/22/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Anaerobic digestion is a well-established process that is applied to treat organic wastes and convert the carbon to valuable methane gas as a source of energy. The digestate that comes out as a by-product is of a great challenge due to its high nutrient content that can be toxic in case of improper disposal to the environment. Several attempts have been done to valorize this digestate. Digestate has been considered as an interesting medium to cultivate microalgae. The nutrients available in the digestate, mainly nitrogen and phosphorus, can be an interesting supplement for microalgae growth requirement. The main obstacles of using digestate as a medium to cultivate microalgae are the dark color and the high ammonium-nitrogen concentration. The focus of this review is to discuss in detail the major attempts in research to overcome inhibition and enhance microalgae cultivation in digestate. This review initially discussed the obstacles of digestate as a medium for microalgae cultivation. Different processes to overcome inhibition were discussed including dilution, supplying additional carbon source, favoring mixotrophic cultivation and pretreatment. More emphasis in this review was given to digestate pretreatment. Among the pretreatment methods, filtration, and centrifugation were of the most applied ones. These strategies were found to be effective for turbidity and chromaticity reduction. For ammonium nitrogen removal, ammonia stripping and biological pretreatment methods were found to play a vital role. Adsorption could work both ways depending on the material used. Combining different pretreatment methods as well as including selected microalgae stains were found interesting strategies to facilitate microalgae cultivation with no dilution. This study recommend that more study should investigate the optimization of microalgae cultivation in anaerobic digestate without the need for dilution.
Collapse
Affiliation(s)
- Jumana Al-Mallahi
- Faculty of Engineering, Hokkaido University, N13, W18, Kita-ku, Sapporo, 060-8628, Japan.
| | - Kazuei Ishii
- Faculty of Engineering, Hokkaido University, N13, W18, Kita-ku, Sapporo, 060-8628, Japan
| |
Collapse
|
22
|
Yan C, Liu Y, Cui X, Cao L, Xiong J, Zhang Q, Wang Y, Ruan R. Improving the efficiency of anaerobic digestion: Domesticated paddy soil microbes enhance the hydrolytic acidification of rice straw and pig manure. BIORESOURCE TECHNOLOGY 2022; 345:126570. [PMID: 34921923 DOI: 10.1016/j.biortech.2021.126570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Improving the efficiency of hydrolytic acidification is critical for methane production from agricultural waste. This study is the first to apply domesticated paddy soil microbes to (DPSM) enhance the hydrolytic acidification of rice straw (RS) and pig manure (PM) to obtain acidizing fluid for anaerobic digestion (AD). At a substrate concentration of 20%, the inoculation of an RS-PM mixture (1:3) with 35% DPSM degraded the volatile solids by 48.1% and yielded 6.8 g/L of volatile fatty acids and 4.7 g/L of acetic acid after seven days of hydrolytic acidification. After 10 days of subsequent AD, the cumulative methane production of the acidizing fluid was 304.96 mL/g COD, similar (P > 0.05) to the control (318.27 mL/g COD). However, the methane production time decreased by 43.4% (from 30 to 17 days), thereby improving the AD efficiency. Inoculation with DPSM is therefore an effective pre-treatment for agricultural waste for methane production.
Collapse
Affiliation(s)
- Chen Yan
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Xian Cui
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China.
| | - Leipeng Cao
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Jianghua Xiong
- Agricultural Ecology and Resources Protection Station of Jiangxi Province, Jiangxi, PR China
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Yunpu Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi, PR China
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
| |
Collapse
|
23
|
Growth Performance, Biochemical Composition and Nutrient Recovery Ability of Twelve Microalgae Consortia Isolated from Various Local Organic Wastes Grown on Nano-Filtered Pig Slurry. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020422. [PMID: 35056737 PMCID: PMC8781922 DOI: 10.3390/molecules27020422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 11/17/2022]
Abstract
This paper demonstrated the growth ability of twelve algae-microbial consortia (AC) isolated from organic wastes when a pig slurry-derived wastewater (NFP) was used as growth substrate in autotrophic cultivation. Nutrient recovery, biochemical composition, fatty acid and amino acid profiles of algae consortia were evaluated and compared. Three algae-microbial consortia, i.e., a Chlorella-dominated consortium (AC_1), a Tetradesmus and Synechocystis co-dominated consortium (AC_10), and a Chlorella and Tetradesmus co-dominated consortium (AC_12) were found to have the best growth rates (µ of 0.55 ± 0.04, 0.52 ± 0.06, and 0.58 ± 0.03 d−1, respectively), which made them good candidates for further applications. The ACs showed high carbohydrates and lipid contents but low contents of both proteins and essential amino acids, probably because of the low N concentration of NFP. AC_1 and AC_12 showed optimal ω6:ω3 ratios of 3.1 and 3.6, which make them interesting from a nutritional point of view.
Collapse
|
24
|
Wu S, Liu Y, Cui X, Zhang Q, Wang Y, Cao L, Luo X, Xiong J, Ruan R. Assessment of Potential Nitrite Safety Risk of Leafy Vegetables after Domestic Cooking. Foods 2021; 10:foods10122953. [PMID: 34945504 PMCID: PMC8701323 DOI: 10.3390/foods10122953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 11/24/2022] Open
Abstract
Improper cultivation can easily cause excessive nitrate accumulation in leafy vegetables, and the cooking processes used to prepare them can upset their nitrate/antioxidant balance, affecting their potential nitrite safety risk (PNSR). We investigated the impacts stir-frying, steaming, microwaving, and boiling on the nitrate, nitrite, and antioxidant capacity in water spinach and cabbage, and observed the impacts of storage duration on the PNSR. The antioxidant/in vivo nitrite ratio (A/N) was used to evaluate the nitrite risks in the cooked vegetables. Boiling achieved the highest A/N ratio (1.57) for water spinach, reducing the nitrate content by 25% without significantly affecting the antioxidant capacity. Stir-frying achieved the highest A/N ratio (6.55) for cabbage, increasing the antioxidant capacity by 140% without significantly affecting the nitrate content. Furthermore, it was found that the storage periods for boiled water spinach and stir-fried cabbage should not exceed 12 h and 24 h, respectively. Appropriate cooking methods and limited storage times are thus required for leafy vegetable to prevent adverse health effects.
Collapse
Affiliation(s)
- Songheng Wu
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
| | - Yuhuan Liu
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
- Correspondence:
| | - Xian Cui
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
| | - Qi Zhang
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
| | - Yunpu Wang
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
| | - Leipeng Cao
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
| | - Xuan Luo
- Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, College of Food Science and Technology, Nanchang University, Nanchang 330047, China; (S.W.); (X.C.); (Q.Z.); (Y.W.); (L.C.); (X.L.)
| | - Jianghua Xiong
- Agricultural Ecology and Resources Protection Station of Jiangxi Province, Nanchang 330046, China;
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, Paul, MN 55108, USA;
| |
Collapse
|
25
|
Zhang L, Zhang L, Wu D, Wang L, Yang Z, Yan W, Jin Y, Chen F, Song Y, Cheng X. Biochemical wastewater from landfill leachate pretreated by microalgae achieving algae's self-reliant cultivation in full wastewater-recycling chain with desirable lipid productivity. BIORESOURCE TECHNOLOGY 2021; 340:125640. [PMID: 34325398 DOI: 10.1016/j.biortech.2021.125640] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Heightened awareness of additional pretreatment for wastewater, has driven studies towards building a full wastewater-recycling chain wherein the wastewater pretreatment is performed by microalgae themselves. We applied biochemical wastewater from landfill leachate with added K2HPO4 (BWLL + P) directly to microalgal cultivation. The results showed that the pretreatment provided by the 1st cultivation reduced suspended solids by nearly half, greatly boosting microalgal growth, which thus yielded 1.06 g/L of dry mass and 87.06 mg/L·d of biomass productivity. From the 2nd to the 4th cultivation, lipid accumulation in BWLL + P was 1.12-1.27 times and 1.95-2.36 times higher than in BG11 and BWLL, respectively, mainly attributed to the comfortable environment engendered by the microalgal pretreatment and the organic carbon in the wastewater. Strikingly, the biodiesel production fed with BWLL + P could save 99% of the cost compared with in BG11. In combination, our pioneering full wastewater-recycling chain achieved microalgae's self-reliant cultivation, with wastewater nourishment.
Collapse
Affiliation(s)
- Lijie Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Libin Zhang
- School of Civil Engineering, Tianjin University, Tianjin 300072, China
| | - Daoji Wu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Lin Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Zhigang Yang
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Wenbao Yan
- Environmental Monitoring Station of Lanshan Branch of Rizhao Ecological and Environment Bureau, 539 Jiaodingshan Road, Rizhao, 276800, China
| | - Yan Jin
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Feiyong Chen
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Yang Song
- Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan, 250101, China
| | - Xiaoxiang Cheng
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
| |
Collapse
|
26
|
Effect of hydraulic retention time on the performance of trickling photo-bioreactor treating domestic wastewater: Removal of carbon, nutrients, and micropollutants. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.07.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
27
|
Wang J, Cao L, Liu Y, Zhang Q, Ruan R, Luo X. Effect of acclimatized paddy soil microorganisms using swine wastewater on degradation of rice straw. BIORESOURCE TECHNOLOGY 2021; 332:125039. [PMID: 33845317 DOI: 10.1016/j.biortech.2021.125039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Rice straw (RS) is one of abundant agricultural waste for biogas production in China. However, the low carbon-methane conversion rate limits its wide application due to the low degradation rate of RS during fermentation. This study investigated the effect of acclimatized paddy soil microorganisms using swine wastewater on degradation of RS before anaerobic digestion. The total organic carbon, reducing sugar and NH4+-N content of paddy soil + RS + swine wastewater (PRS) (653.50 mg/L) was higher than that of other groups after 19 days. The carboxymethyl cellulose activity (4.01 IU), cellulose/lignin ratio (5.25) and the degradation rate of lignin (51.96%) in PRS were higher than those of other groups. The Firmicutes (21.02%), Chloroflexi (12.48%), Proteobacteria (20.92%), and Bacteroidetes (25.78%) were the main fermentation phyla in PRS during acclimatization. These results indicated that the acclimatized paddy soil microorganisms using swine wastewater (SW) could degrade RS more efficiently.
Collapse
Affiliation(s)
- Jingjing Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Leipeng Cao
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Qi Zhang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Roger Ruan
- Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN 55108, USA
| | - Xuan Luo
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| |
Collapse
|
28
|
Guo D, Cui B, Chen Z, Yan W, Ji B, Zhang Q, Liu Y, Luo S, Hu M, Ruan R. Biomass enhances the reduction of oxidized pellets with carbon monoxide. BIORESOURCE TECHNOLOGY 2021; 331:124973. [PMID: 33798854 DOI: 10.1016/j.biortech.2021.124973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
In this study, the reduction mechanism of using CO to reduce biomass-oxidized pellets (BOP) and general-oxidized pellets (GOP) was deeply analyzed. The effect of biomass addition on the reduction of oxidized pellets and the change of reduction kinetics were studied. The addition of 2 wt% biomass into pellets increases pores of the oxidized pellets, promotes the rate of CO entering the pellets and the overflow of CO2, which results in faster reduction of the oxidized pellets. The reduction reactions of BOP and GOP were controlled by internal diffusion, mixing control and interface control sequentially. Also, addition of the biomass to the pellets decreases the activation energy required for their reduction, from 87.30 to 80.65 kJ·mol-1. The addition of biomass shortens the reduction time by 3% which can reduce the energy consumption. Therefore, the biomass together with CO enhances the reduction of oxidized pellets and has real environmental benefits.
Collapse
Affiliation(s)
- Dabin Guo
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China; Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Baihui Cui
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Zhihua Chen
- School of Environment, Henan Normal University, Xinxiang 453007, China
| | - Wangwang Yan
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Bin Ji
- Department of Water and Wastewater Engineering, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Qi Zhang
- Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Yuhuan Liu
- Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Shiyi Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China
| | - Mian Hu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Roger Ruan
- Center for Biorefning and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
| |
Collapse
|
29
|
Zhang H, Li X, An Z, Liu Z, Tang C, Zhao X. Treatment of polyacrylamide-polluted wastewater using a revolving algae biofilm reactor: Pollutant removal performance and microbial community characterization. BIORESOURCE TECHNOLOGY 2021; 332:125132. [PMID: 33848818 DOI: 10.1016/j.biortech.2021.125132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 06/12/2023]
Abstract
Industries such as oil mining face challenges in the treatment of polyacrylamide (PAM)-containing wastewater produced during petroleum extraction. The feasibility of using revolving algae biofilm (RAB) reactors to treat PAM-contaminated wastewater for simultaneous removal of carbon and nitrogen was evaluated. The presence or absence of external nitrogen sources had a significant impact on the treatment effect of the RAB system. With the additional N source, the PAM, COD, TOC, and TN removal rates were 64.1 ± 2.0, 58 ± 1.5, 34.5 ± 1.5, and 85 ± 6.0%, respectively. High-throughput sequencing showed that the biofilms on RAB reactors contained a variety of bacteria, cyanobacteria, and green algae, degrading PAM through various mechanisms. The results of infrared spectroscopy analysis indicate that the product of these processes was carboxylic acid. Based on these results, it was concluded that RAB systems can be effectively applied to the treatment of polymer-containing wastewater.
Collapse
Affiliation(s)
- Huichao Zhang
- School of Civil Engineering, Yantai University, Yantai 264000, China
| | - Xin Li
- School of Civil Engineering, Yantai University, Yantai 264000, China
| | - Zhongyi An
- School of Civil Engineering, Yantai University, Yantai 264000, China.
| | - Zhiwei Liu
- School of Civil Engineering, Yantai University, Yantai 264000, China
| | - Chunxiao Tang
- School of Civil Engineering, Yantai University, Yantai 264000, China
| | - Xiaodong Zhao
- School of Marine Science, Yantai University, Yantai 264000, China
| |
Collapse
|