Contribution of the ozonation pre-treatment to the biodegradation of aqueous solutions of 2,4-dichlorophenol

Contreras, Sandra; Rodríguez, Ma Paloma González; Momani, Fares Al; Sans, Carme; Esplugas, Santiago

doi:10.1016/s0043-1354(03)00167-2

Cited by 174 publications

(66 citation statements)

References 18 publications

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“…The range of BOD/COD ratio is 0.198-0.790. A value of more than 0.5 of BOD/COD ratio indicates rapid biodegradation, and a range of 0.2-0.4 specifies biodegradation only in favorable thermal condition [15]. The ratio of Cikapundung River water mainly denotes the rapid biodegradation process.…”

Section: Bod/cod Ratiomentioning

confidence: 99%

Influencing Parameter of Self Purification Process in the Urban Area of Cikapundung River, Indonesia

Yustiani

Nurkanti

Suliasih

et al. 2018

GEOMATE

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Self-purification process is an important process in the effort of recovering the river condition itself. This process usually takes place naturally. However, several inhibitions might disturb the process. It was indicated by the slow deoxygenation rate and unhealthy river condition. This research aims to identify the influence parameters responsible for the slow of self-purification in the Cikapundung River, which is located in the urban area of Bandung City, Indonesia. The river water samples were taken and analyzed in the laboratory to obtain the water quality. The deoxygenation rate was also calculated based on the Slope Method after data was acquired from 10 days daily observation. Research showed that the value of urban river deoxygenation rate is relatively low. The low value of the rate of deoxygenation led to the difficulty in rivers to purify themselves. Pollutants inhibiting the process include phenol, detergent, and heavy metals, which are contaminating the river over the maximum standard. Biologically, the decomposer consists in the river is few. It leads to a slow organic degradation rate. The condition is representing the low capacity of self-purification of the Cikapundung River which is caused mainly by chemical and biological parameters.

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Section: Bod/cod Ratiomentioning

confidence: 99%

Influencing Parameter of Self Purification Process in the Urban Area of Cikapundung River, Indonesia

Yustiani

Nurkanti

Suliasih

et al. 2018

GEOMATE

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“…The oxidation degree of the nanocatalysts was indexed by average oxidation state of carbon (AOSC), which was defined by the following expression (Contreras et al, 2003): (2) where TOC and COD were expressed in moles of C/L and moles of O2/L, respectively. AOSC took values between +4 for CO2, the most oxidized state of carbon, and -4 for CH4, the most reduced state of carbon.…”

Section: Catalytic Ozonation Performancementioning

confidence: 99%

Promoting catalytic ozonation of phenol over graphene through nitrogenation and Co 3 O 4 compositing

Bao

Hui

Duh

2016

Journal of Environmental Sciences

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Catalytic ozonation is progressively becoming an attractive technique for quick water purification but efficient and stable catalysts remains still elusive. Here we solvothermally synthesized highly-dispersed Co3O4 nanocrystals over microscale nitrogen-doping graphene (NG) nanosheets and tested it as a synthetic catalyst in the ozonation of phenol in acid aqueous solutions. Transmission electron microscopy, Powder X-ray diffraction, Fourier transform infrared spectra and X-ray photoelectron spectroscopy were used to determine its morphology, crystallinity, elemental

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“…A value of >0.5 BOD/COD ratio denotes rapid biodegradation, and a range of 0.2-0.4 indicates biodegradation only in favorable thermal condition [10]. Having the biodegradation capacity will suggest the further treatment and strategy to overcome the polluted urban rivers.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Biodegradation Capacity of Urban Rivers in Jakarta, Indonesia

Yustiani¹

2017

GEOMATE

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Jakarta is a city with dense population and various activities causing the heavy pressure to the environment. Domestic and non-domestic activities are generating pollution to its rivers. The water body actually has itself a self natural purification capability. The characteristic of the river water quality will affect this pollution degradation process. This research is conducted to examine the biodegradation capacity of Jakarta's rivers. Water quality data of 23 rivers were collected for the time period of 2011 to 2015. Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) concentrations are then being used to calculate the BOD/COD ratio. The calculation results show that during the period time of 2011-2013 the ratio ranges between 0.36 and 0.63, which indicates that the rivers have average biodegradation capability. However, the 2014 year's data show that almost all of the rivers have ratio less than 0.2, indicating the nobiodegradation capability. Existence of metals can also inhibit the biodegradation process. The water quality data shows significant increase of metals in the year of 2014, especially Copper and Zinc in several rivers. Surfactant was also observed in extremely high concentration. Thus, most of the Jakarta's rivers have relatively low capability in biodegradation capacity and self purification capability. Although the latest year data shows an improvement, yet the BOD/COD ratio is still in the range of slow of biodegradation capacity.

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Contribution of the ozonation pre-treatment to the biodegradation of aqueous solutions of 2,4-dichlorophenol

Cited by 174 publications

References 18 publications

Influencing Parameter of Self Purification Process in the Urban Area of Cikapundung River, Indonesia

Influencing Parameter of Self Purification Process in the Urban Area of Cikapundung River, Indonesia

Promoting catalytic ozonation of phenol over graphene through nitrogenation and Co 3 O 4 compositing

Investigation on the Biodegradation Capacity of Urban Rivers in Jakarta, Indonesia

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