Exploiting the real wastewater potential for resource recovery –n-caproate production from acid whey

2018 ◽  
Vol 20 (16) ◽  
pp. 3790-3803 ◽  
Author(s):  
Anna Duber ◽  
Lukasz Jaroszynski ◽  
Roman Zagrodnik ◽  
Joanna Chwialkowska ◽  
Wojciech Juzwa ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Organic Waste ◽  
Resource Recovery ◽  
The Real ◽  
Carboxylate Platform ◽  
Real Wastewater ◽  
Acid Whey

A carboxylate platform-based bioprocess now enables the conversion of organic waste into a valuable bioproductviaopen culture fermentation due to a complex microbial activity.

Biological treatment of industrial wastes in a photobioreactor

2006 ◽  
Vol 53 (11) ◽  
pp. 117-125 ◽  
Author(s):  
E. Tamer ◽  
M.A. Amin ◽  
E.T. Ossama ◽  
M. Bo ◽  
G. Benoit
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Algal Growth ◽  
Bacterial Consortium ◽  
Industrial Wastes ◽  
Synthetic Wastewater ◽  
Phenol Removal ◽  
The Real ◽  
Real Wastewater

An algal-bacterial consortium was tested for the treatment from a coke factory. A Chlorella vulgaris strain and a phenol-degrading Alcaligenes sp. were first isolated from the wastewater treatment plant to serve as inocula in the subsequent biodegradation tests. Batch tests were then conducted with samples from the real wastewater or using a synthetic wastewater containing 325 mg phenol/l and 500 mg NH4+/l as target pollutants. Direct biological treatment of the real wastewater was not possible due to the toxicity of organic compounds. Activated carbon adsorption and UV(A-B)-irradiation were efficient in detoxifying the effluent for subsequent biological treatment as inoculation of pretreated samples with the algal-bacterial consortium was followed by complete phenol removal and NH4+ removal of 45%. Complete phenol removal and 33% NH4+ removal were achieved during the fed-batch treatment of artificial wastewater at 6 d hydraulic retention time (HRT). Under continuous feeding at 3.6 d HRT, phenol and NH4+ removal dropped to 58 and 18%, respectively. However, complete phenol removal and 29% NH4+ removal were achieved when 8 g NaHCO3/l was added to the artificial wastewater to enhance algal growth. This study confirms the potential of solar-based industrial wastewater treatment based on solar-based UV pretreatment followed by algal-bacterial biodegradation.

Resource recovery from organic waste - a short story about bioprocess development

2020 ◽  
Author(s):  
Piotr Oleskowicz-Popiel
Keyword(s):  
Short Story ◽  
Organic Waste ◽  
Resource Recovery ◽  
Chain Elongation ◽  
Bioprocess Development

Contribution to the International Chain Elongation Conference 2020 | ICEC 2020.

Kinetic study of compost liquor nitrification

2011 ◽  
Vol 63 (5) ◽  
pp. 868-876 ◽  
Author(s):  
J. Gagnaire ◽  
X. Y. Wang ◽  
L. Chapon ◽  
P. Moulin ◽  
B. Marrot
Keyword(s):  
Activated Sludge ◽  
Oxidation Rate ◽  
Industrial Wastewater ◽  
Ammonia Oxidation ◽  
Industrial Effluent ◽  
The Real ◽  
Haldane Model ◽  
Real Wastewater ◽  
Ammonia Oxidation Rate ◽  
Ammonia Oxidising Bacteria

This study is a first kinetic approach about the compost liquor treatment by activated sludge. This industrial wastewater is highly loaded in organic and nitrogen compounds (COD≈12,000 mg L−1 and NH4+-N≈4,000 mg L−1). The possibility of its treatment in an urban WWTP is studied measuring ammonia oxidation rate with non-acclimated sludge to the industrial effluent. Compost liquor appears as an inhibitor substrate. The ammonia oxidation rate can be modelled by the Haldane model: UMAX=0.180 d−1, KS=12.0 mgN.L−1 and KI=26.0 mgN.L−1. The ammonia oxidation rate also follows for a synthetic substrate which has the same pollutant load as the real substrate. In this case, the ammonia oxidation rate can be modelled by the Monod model: UMAX=0.073 d−1 and KS=4.3 mgN.L−1. This result confirms that the ammonia oxidising bacteria are inhibited by the real wastewater. The following-up of nitrate production shows also the inhibition of nitrite oxidising bacteria. The compost liquor treatment seems not possible in an urban WWTP (<50,000 p.e.). That’s why a specific WWTP is recommended and an acclimation step of activated sludge is essential.

scholarly journals Removal of Multi-Class Antibiotic Drugs from Wastewater Using Water-Soluble Protein of Moringa stenopetala Seeds

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 595 ◽  
Author(s):  
Temesgen Kebede ◽  
Simiso Dube ◽  
Mathew Nindi
Keyword(s):  
Soluble Protein ◽  
Soluble Proteins ◽  
Water Soluble ◽  
Wastewater Sample ◽  
Analyte Concentration ◽  
Moringa Stenopetala ◽  
The Real ◽  
Antibiotic Drugs ◽  
Water Soluble Protein ◽  
Real Wastewater

The removal of ten selected antibiotic drugs belonging to different classes (sulphonamides, fluoroquinolones, macrolides, and tetracycline) was investigated using water-soluble proteins from the seeds of Moringa stenopetala. The surface functional groups of water-soluble protein powder before and after removal of antibiotics were characterized using Fourier transform infrared (FTIR). Processing parameters that could affect the removal efficiency, such as initial analyte concentration, protein dosage, and pH were studied. An optimized method was applied to a real wastewater sample collected from Daspoort Wastewater Treatment Plant (WWTP) located in Pretoria, South Africa. Under optimal conditions, the results indicated good agreement between the efficiency of water-soluble proteins to remove antibiotics from the real wastewater sample and from the synthetic wastewater sample prepared in the laboratory using standard solutions with known concentrations. The percentage of removal under optimum conditions (protein dosage of 40 mg, initial analyte concentration of 0.1 mg L−1, and pH 7) was between 85.2 ± 0.01% and 96.3 ± 0.03% for standard mixture solution and from 72.4 ± 0.32% to 92.5 ± 0.84% and 70.4 ± 0.82% to 91.5 ± 0.71% for the real wastewater (effluent and influent) sample.

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