DOI: 10.1016/j.watres.2018.12.026
Scopus记录号: 2-s2.0-85059458452
论文题名: Integrated process for olive oil mill wastewater treatment and its revalorization through the generation of high added value algal biomass
作者: Malvis A. ; Hodaifa G. ; Halioui M. ; Seyedsalehi M. ; Sánchez S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 332
结束页码: 342
语种: 英语
英文关键词: Biomass growth
; Chlorella pyrenoidosa
; Flocculation
; Olive oil mill wastewater
; Photolysis
; Treatment
Scopus关键词: Algae
; Batch reactors
; Biomass
; Chemical oxygen demand
; Ecology
; Flocculation
; Microfiltration
; Olive oil
; Organic carbon
; Photolysis
; Water treatment
; Biomass growth
; Chemical oxygen demand removals
; Chlorella pyrenoidosa
; Experimental conditions
; Maximum specific growth rates
; Olive oil mill wastewaters
; Total phenolic compounds
; Treatment
; Wastewater treatment
; carbohydrate
; inorganic salt
; linoleic acid
; lipid
; monounsaturated fatty acid
; oleic acid
; olive oil
; organic carbon
; palmitic acid
; phenol derivative
; polyunsaturated fatty acid
; saturated fatty acid
; stearic acid
; sulfate
; biomass
; chemical pollutant
; concentration (composition)
; experimental study
; flocculation
; growth
; growth rate
; integrated approach
; microalga
; photolysis
; pollutant removal
; temperature effect
; total organic carbon
; wastewater
; wastewater treatment
; water treatment
; Acutodesmus obliquus
; aeration
; agitation
; algal biomass
; algal growth
; Article
; biochemical composition
; biomass
; biomass production
; bioprocess
; bioremediation
; carbon source
; centrifugation
; chemical oxygen demand
; Chlorella pyrenoidosa
; comparative study
; controlled study
; electric conductivity
; flocculation
; illumination
; mathematical model
; microfiltration
; mixotroph
; nonhuman
; olive mill wastewater
; pH
; photolysis
; physical chemistry
; priority journal
; temperature
; turbidity
; two phase continuous centrifugation
; waste water management
; water quality
; algae
; Chlorella pyrenoidosa
英文摘要: The two-phase continuous centrifugation process for olive oil extraction generates high amounts of olive oil mill wastewater (OMW), characterized by containing large concentrations of numerous contaminant compounds for the environment. An integral process based on physico-chemical (flocculation, photolysis and microfiltration) and microalgal growth stages was proposed for its treatment. Chemical oxygen demand (COD) removal percentages were 57.5%, 88.8% and 20.5% for flocculation, photolysis and microfiltration, respectively. The global removal percentages of organic load in the primary treatment were 96.2% for COD, 80.3% for total organic carbon (TOC) and 96.6% for total phenolic compounds (TPCs). In secondary treatment, different experiments using the microalgae Chlorella pyrenoidosa were performed on a laboratory scale in stirred batch tank reactors. The OMW concentrations in each culture medium were: 5%, 10%, 25%, 50%, 75% and 100% (v/v). The common experimental conditions were: pH = 7, temperature = 25 °C, agitation speed = 200 rpm, aeration rate = 0.5 (v/v) and illumination intensity = 359 μE m−2 s−1. The highest maximum specific growth rate (0.07 h−1) and volumetric biomass production (1.25 mg/(L h)) values were achieved in the culture with 50% of OMW (v/v). The final biomass obtained had a high percentage of carbohydrates, whose content ranged from 30.3% to 89.2% and the highest lipid content (34.2%) was determined in the culture with 25% of OMW (v/v). The final treated water is suitable for its use in irrigation, discharge to receiving waters or for being reused in the same process. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122041
Appears in Collections: 气候变化事实与影响
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作者单位: Molecular Biology and Biochemical Engineering Department, Chemical Engineering Area, University of Pablo de Olavide, Seville, ES-41013, Spain; Chemical, Environmental and Materials Department, University of Jaén, Centre of Advanced Studies in Olives and Olive-Oil, Jaén, ES-23071, Spain; School of Environment, Tsinghua University, Beijing, 100084, China
Recommended Citation:
Malvis A.,Hodaifa G.,Halioui M.,et al. Integrated process for olive oil mill wastewater treatment and its revalorization through the generation of high added value algal biomass[J]. Water Research,2019-01-01