Obaid Bhat - Academia.edu (original) (raw)

Papers by Obaid Bhat

Research paper thumbnail of Harnessing aquaculture wastewater with Chlorella protothecoides for biodiesel and bioethanol production

Maejo International Journal of Energy and Environmental Communication (MIJEEC), Jun 9, 2023

The wastewater treatment potential of the microalga Chlorella protothecoides was investigated in ... more The wastewater treatment potential of the microalga Chlorella protothecoides was investigated in the context of fish farming, and it is efficacy was further evaluated through cultivation at different inoculation levels to gauge pollutant removal efficiency. This study examines C. protothecoides for growth, nutrient removal, and biofuel potential. Climbing perch culture effluent (CPCE) mediums are employed for algal cultivation, with optical density (OD) measurements capturing growth dynamics that culminate on the 10th day in dense biomass accumulation. Nitrogen and phosphorus, key components of wastewater, exhibited substantial reduction. Ammonia concentrations decreased by 77.88%, nitrite by 93.75%, and nitrate by 95.67%. The most striking reduction was observed in phosphorus levels, with a remarkable 97.87% removal rate. Furthermore, the microalga's pigment composition was explored, showcasing high chlorophyll content, alongside significant carotenoids. High protein content (45.71 g/100 g) offers amino acids for bio-based materials and enzymatic catalysts. Carbohydrates (33.23 g/100 g) represent a valuable energy source for bioethanol production. Lipid content (8.64 g/100 g) suggests biodiesel potential, with unsaturated fatty acids comprising over 82% of the biodiesel content. The study underscores C. protothecoides's potential in growth, nutrient removal, and biofuel production. Therefore, this research contributes valuable insights into sustainable wastewater treatment and bioenergy generation technologies, with empirical data supporting the findings.

Research paper thumbnail of Impact of biomass density on growth rates of Spirulina platensis under different light spectra

Maejo International Journal of Energy and Environmental Communication

Light is the core environmental factor that affects the growth and biomass production of microalg... more Light is the core environmental factor that affects the growth and biomass production of microalgae. However, the high density of microalgae will lead to reduction of the growth rate of microalgae culture due to availability of light decreases. Therefore, this experiment was conducted with aim of determining the influence of biomass density on growth of Spirulina platensis under different density of culture and LED lights. The result found that, the growth rate Spirulina platensis was reduced under high biomass density (9:1) due to lacking light penetration into the culture. However, white LED helps maintain the light acclimation process in the cells. Light spectra enhance the growth biomass. However white light contains all the light spectra highly contribute to the biomass production. The maximum light was penetrated into the culture due to minimal density of culture. More light was observed by the cells. Photosynthetic microalage may frequently experience irradiance fluctuations ...

Research paper thumbnail of Exploring the impact of light-emitting diodes and pH on microalgae Spirulina biomass production optimization using a central composite design

Biomass Conversion and Biorefinery

Research paper thumbnail of Spirulina Cultivation Under Different light-emitting Diodes for Boosting Biomass and Protein Production

Research paper thumbnail of Effect of Photoperiod and White LED on Biomass Growth and Protein Production by Spirulina

Research paper thumbnail of Production of biofuel from microalgae grown in wastewater- A review

Maejo International Journal of Energy and Environmental Communication (MIJEEC), Oct 27, 2022

There is an urgent demand for an evolution of renewable energy resources due to the rising global... more There is an urgent demand for an evolution of renewable energy resources due to the rising global energy demand, resource depletion, growing emphasis on reducing climate change, and resource scarcity. Among many resources, Microalgae are thought to be the cleanest alternative feedstock for biofuels and biorefineries because of their advantages of quick growth, effective carbon dioxide fixation, lack of competition for agricultural production and potable water, and the potential to accumulate massive volumes of lipids and carbohydrates. Therefore, this review has discussed the different wastewater which can support and enhance the growth of microalgae, biosynthesis of lipids, production of biofuels from microalgae, and biochemical properties of biofuel. In order to minimize the accumulation of wastewater to protect the environment from pollution, apply wastewater to grow microalgae to achieve the goal of bio circular economy. This review provides clear details and a summary of the production of biofuel from microalgae grown in wastewater.

Research paper thumbnail of Harnessing aquaculture wastewater with Chlorella protothecoides for biodiesel and bioethanol production

Maejo International Journal of Energy and Environmental Communication (MIJEEC), Jun 9, 2023

The wastewater treatment potential of the microalga Chlorella protothecoides was investigated in ... more The wastewater treatment potential of the microalga Chlorella protothecoides was investigated in the context of fish farming, and it is efficacy was further evaluated through cultivation at different inoculation levels to gauge pollutant removal efficiency. This study examines C. protothecoides for growth, nutrient removal, and biofuel potential. Climbing perch culture effluent (CPCE) mediums are employed for algal cultivation, with optical density (OD) measurements capturing growth dynamics that culminate on the 10th day in dense biomass accumulation. Nitrogen and phosphorus, key components of wastewater, exhibited substantial reduction. Ammonia concentrations decreased by 77.88%, nitrite by 93.75%, and nitrate by 95.67%. The most striking reduction was observed in phosphorus levels, with a remarkable 97.87% removal rate. Furthermore, the microalga's pigment composition was explored, showcasing high chlorophyll content, alongside significant carotenoids. High protein content (45.71 g/100 g) offers amino acids for bio-based materials and enzymatic catalysts. Carbohydrates (33.23 g/100 g) represent a valuable energy source for bioethanol production. Lipid content (8.64 g/100 g) suggests biodiesel potential, with unsaturated fatty acids comprising over 82% of the biodiesel content. The study underscores C. protothecoides's potential in growth, nutrient removal, and biofuel production. Therefore, this research contributes valuable insights into sustainable wastewater treatment and bioenergy generation technologies, with empirical data supporting the findings.

Research paper thumbnail of Impact of biomass density on growth rates of Spirulina platensis under different light spectra

Maejo International Journal of Energy and Environmental Communication

Light is the core environmental factor that affects the growth and biomass production of microalg... more Light is the core environmental factor that affects the growth and biomass production of microalgae. However, the high density of microalgae will lead to reduction of the growth rate of microalgae culture due to availability of light decreases. Therefore, this experiment was conducted with aim of determining the influence of biomass density on growth of Spirulina platensis under different density of culture and LED lights. The result found that, the growth rate Spirulina platensis was reduced under high biomass density (9:1) due to lacking light penetration into the culture. However, white LED helps maintain the light acclimation process in the cells. Light spectra enhance the growth biomass. However white light contains all the light spectra highly contribute to the biomass production. The maximum light was penetrated into the culture due to minimal density of culture. More light was observed by the cells. Photosynthetic microalage may frequently experience irradiance fluctuations ...

Research paper thumbnail of Exploring the impact of light-emitting diodes and pH on microalgae Spirulina biomass production optimization using a central composite design

Biomass Conversion and Biorefinery

Research paper thumbnail of Spirulina Cultivation Under Different light-emitting Diodes for Boosting Biomass and Protein Production

Research paper thumbnail of Effect of Photoperiod and White LED on Biomass Growth and Protein Production by Spirulina

Research paper thumbnail of Production of biofuel from microalgae grown in wastewater- A review

Maejo International Journal of Energy and Environmental Communication (MIJEEC), Oct 27, 2022

There is an urgent demand for an evolution of renewable energy resources due to the rising global... more There is an urgent demand for an evolution of renewable energy resources due to the rising global energy demand, resource depletion, growing emphasis on reducing climate change, and resource scarcity. Among many resources, Microalgae are thought to be the cleanest alternative feedstock for biofuels and biorefineries because of their advantages of quick growth, effective carbon dioxide fixation, lack of competition for agricultural production and potable water, and the potential to accumulate massive volumes of lipids and carbohydrates. Therefore, this review has discussed the different wastewater which can support and enhance the growth of microalgae, biosynthesis of lipids, production of biofuels from microalgae, and biochemical properties of biofuel. In order to minimize the accumulation of wastewater to protect the environment from pollution, apply wastewater to grow microalgae to achieve the goal of bio circular economy. This review provides clear details and a summary of the production of biofuel from microalgae grown in wastewater.