|
1
|
Lee JC, Park R, Yoo KS, Kim HW. Coupling cold plasma and membrane photobioreactor for enhanced fouling control during livestock excreta treatment. CHEMOSPHERE 2021; 265:129031. [PMID: 33261833 DOI: 10.1016/j.chemosphere.2020.129031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
To treat high-turbidity livestock excrements (LE), this study suggests a synergistic system coupling cold plasma (CP) and membrane photobioreactor (MPBR). During the continuous operation of the integrated system, physico-chemical oxidation of CP decompose turbidity and total suspended solids (TSS) up to 99.9%. The microalgal concentration of Scenedesmus obliquus in the following MPBR reach as high as 1,944 mg D.W./L, which indicates the residual organic and inorganic substances were actively consumed by phototrophic metabolism. Pearson correlation analysis confirms this synergistic relationship of turbidity and TSS with biological growth parameters such as biomass growth, soluble microbial products, and extracellular polymeric substances. Results evidence that the turbidity and TSS are directly connected to the microalgal growth in this integrated system thus the role of CP is crucial to achieving the LE treatment goal. Overall, this study provides a guideline to support the enhanced treatment strategy to control LE with the production of bioresources for sustainable carbon and nutrient cycles.
Collapse
Affiliation(s)
- Jae-Cheol Lee
- Department of Environment and Energy, Division of Civil, Environmental, Materials Resource, and Energy Engineering, Soil Environment Research Center, Jeonbuk National University, Jeollabuk-do, 54896, Republic of Korea; National Institute of Agricultural Sciences, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea.
| | - Rumi Park
- Department of Environment and Energy, Division of Civil, Environmental, Materials Resource, and Energy Engineering, Soil Environment Research Center, Jeonbuk National University, Jeollabuk-do, 54896, Republic of Korea; National Institute of Environmental Research, Han River Envrionment Research Center, 42, Dumulmeori-gil 68beon-gil, Yangseo-myeon, Yangpyeong-gun, Gyeonggi-do, 12585, Republic of Korea.
| | - Kyu Seon Yoo
- Department of Civil and Environmental Engineering, Jeonju University, Jeollabuk-do, 55069, Republic of Korea.
| | - Hyun-Woo Kim
- Department of Environment and Energy, Division of Civil, Environmental, Materials Resource, and Energy Engineering, Soil Environment Research Center, Jeonbuk National University, Jeollabuk-do, 54896, Republic of Korea.
| |
Collapse
|
|
2
|
Effect of trophic conditions on microalga growth, nutrient removal, algal organic matter, and energy storage products in Scenedesmus (Acutodesmus) obliquus KGE-17 cultivation. Bioprocess Biosyst Eng 2019; 42:1225-1234. [PMID: 30993444 DOI: 10.1007/s00449-019-02120-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 04/02/2019] [Indexed: 10/27/2022]
Abstract
This study compared the performance of microalga growth, nutrient removal, algal organic matter, and energy storage products in mixotrophic, photoautotrophic, and heterotrophic conditions. Scenedesmus obliquus was used as a model species. Mixotrophic condition showed the highest specific growth rate of 0.96 d-1 as well as the fastest nitrogen and phosphorus removal rate of 85.17 mg-N g-cell-1 day-1 and 11.49 mg-P g-cell-1 day-1, respectively, compared with photoautotrophic and heterotrophic conditions. Mixotrophic microalgae had relatively higher carbohydrates and lipids contents (21.8 and 24.0%) than photoautotrophic and heterotrophic conditions. Meanwhile, algal organic matter (AOM) in the medium was produced at the highest level under photoautotrophic condition. Mixotrophic condition was more efficient in terms of microalga growth, nutrient removal, production of energy storage products, and suppression of AOM, and would be adaptable for wastewater treatment process.
Collapse
|
|
3
|
Synthesis of immobilized cerium doped ZnO nanoparticles through the mild hydrothermal approach and their application in the photodegradation of synthetic wastewater. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.103] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
|
4
|
Utilization of Organic Liquid Fertilizer in Microalgae Cultivation for Biodiesel Production. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-018-0081-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|