Abstract
The application of cyanobacterial and diatom cultures for the treatment of industrial effluents has been well recognized.In this study aimed to evaluate the effect of urban sewage on growth of Spirolina plantensis and Chaetoceros muelleri. The experiment was conducted in 6 treatments as a growth medium. Result showed that in treatment 5 maximum cell densities was (565×102±237.7) at day7 thus treatment 5 has best condition for growth S. plantensis and in treatment 3 maximum cell density was (825×104±92) at day13.Treatment 5 has best condition for growth C. muelleri. Total chlorophyll a, contents (μg/1) recorded in S. Plantensi sand C. muelleri was highest at treatment 3(0.21±0.07) and treatment 4(0.23± 0.10) respectively. In present investigation, both the algal species can be good potential to growth in urban sewage. The urban sewage removal efficiency of C. muelleri was higher as compare to S.plantensis which can be recommended for phytoremediation purpose.Keywords: Spirolina; Chaetoceros;Nitrate and phosphate; Chlorophyll a;Urban sewage; Depletion
Highlights
The pollution increase, industrialization and rapid economic development, are cause of decrease the availability and quality of water resources, in many areas worldwide.Nowadays, uncontrolled discharge from industrial sectors or agriculture discharged to aquatic ecosystems and contaminated total aquatic environment which, cause toxic effect on human, via accumulation in aquatic animals, through food chain and affect biodiversity (Lavajoo et al 2015)
Microalgae provide an efficient lowcost approach to treat wastewater (Lananan et al, 2014; Nasir et al, 2015).Recent studies showed that many algal species, especially Chlamydomonas, Scenedesmus and Chlorella decreased nutrients under light condition and they are capable of heterotrophic growth on simple molecules, such as acetate, glucose and organic acids in the dark (Laliberte andDe la Noue, 1993).It has been suggested that a Microalgae have been offered as bioremediation treatment to decrease (NH4+, NO3-and PO43-) nutrients (Mallick, 2002).The presence of high concentrations of ammonia and urea in urban sewages inhibit algal growth and physiological activity (Przytocka-Jusiak, 1976).in the present study the growth rates and amount of nitrate and phosphate absorptionof Spirolina plantensis and Chaetoceros muelleri on urban wastewater were determined
The culture growth medium prepared with three replicates for conducting the experiments and the duration was 15 days under similar laboratory conditions at temperature (30oC ± 2oC) for Spirolina plantensisand Temperature (25oC ± 2oC) for Chaetoceros muelleri;, Light (2500 ± 500) lux forSpirolinaplantensisand Light (4500 ± 500) lux for Chaetoceros, optimum pH was between 8.0 and 11 for Spirolina plantensis and for Chaetoceros muelleri was between 9.0 and 11, that adjusted by electronic pH meter (ELICO, Model LI 120) and with constant aeration
Summary
The pollution increase, industrialization and rapid economic development, are cause of decrease the availability and quality of water resources, in many areas worldwide.Nowadays, uncontrolled discharge from industrial sectors or agriculture discharged to aquatic ecosystems and contaminated total aquatic environment which, cause toxic effect on human, via accumulation in aquatic animals, through food chain and affect biodiversity (Lavajoo et al 2015). Microalgae provide an efficient lowcost approach to treat wastewater (Lananan et al, 2014; Nasir et al, 2015).Recent studies showed that many algal species, especially Chlamydomonas, Scenedesmus and Chlorella decreased nutrients under light condition (mixotrophy) and they are capable of heterotrophic growth on simple molecules, such as acetate, glucose and organic acids in the dark (Laliberte andDe la Noue, 1993).It has been suggested that a Microalgae have been offered as bioremediation treatment to decrease (NH4+, NO3-and PO43-) nutrients (Mallick, 2002).The presence of high concentrations of ammonia and urea in urban sewages inhibit algal growth and physiological activity (Przytocka-Jusiak, 1976).in the present study the growth rates and amount of nitrate and phosphate absorptionof Spirolina plantensis and Chaetoceros muelleri on urban wastewater were determined
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Applied Sciences and Environmental Management
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
