Combination of Chlorella vulgaris and Eichhornia crassipes for wastewater nitrogen removal

Bích, Nguyễn Ngọc; Yaziz, Mohammad Ismail; Bakti, N. A. K.

doi:10.1016/s0043-1354(98)00439-4

Cited by 74 publications

(26 citation statements)

References 3 publications

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“…In this experiment, there were no additions of any carbon sources, or trace elements to the treated wastewater to enhance or optimize Chlorella vulgaris growth. The results obtained was similar stated in the previous study by Bich et al [24], who reported that the VSS concentration was within 26 % of at 4 to 5 days. It is possible that algal biomass might have increased if mineral nutrients and some trace elements had been added.…”

Section: Reduction Of Solidsupporting

confidence: 92%

Reduction of Organic and Inorganic Pollutant from Waste Water by Algae

Sahu¹

2014

ILNS

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Recently, algae have become significant organisms for biological purification of wastewater since they are able to accumulate plant nutrients, heavy metals, pesticides, organic and inorganic toxic substances and radioactive matters in their cells/bodies. Biological wastewater treatment systems with micro algae have particularly gained importance in last 50 years and it is now widely accepted that algal wastewater treatment systems are as effective as conventional treatment systems. These specific features have made algal wastewaters treatment systems an significant low-cost alternatives to complex expensive treatment systems particularly for purification of municipal wastewaters. By this method 70 % of biological oxygen demand, 66 % of chemical oxygen demand, 71 % total nitrogen, 67 % of phosphorus, 54 % volatile solid and 51 % of dissolved solid was reduced.

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Section: Reduction Of Solidsupporting

confidence: 92%

Reduction of Organic and Inorganic Pollutant from Waste Water by Algae

Sahu¹

2014

ILNS

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“…Recycling nitrogen, phosphorous and other nutrients is a strategy to address some of these challenges while addressing other ecological issues such as eutrophication. Algae are capable of utilizing nutrients (including, nitrogen and phosphorus) from wastewater and thus could play a key role in nutrient recovery from waste waters [42,51,[214][215][216][217][218][219][220][221]. Maximizing algae production and minimizing costs associated with harvesting are critical to cost-effective nutrient removal system development [222].…”

Section: Algae As a Sustainable Biofuel Sourcementioning

confidence: 99%

Effects of Environmental Factors and Nutrient Availability on the Biochemical Composition of Algae for Biofuels Production: A Review

2013

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Due to significant lipid and carbohydrate production as well as other useful properties such as high production of useful biomolecular substrates (e.g., lipids) and the ability to grow using non-potable water sources, algae are being explored as a potential high-yield feedstock for biofuels production. In both natural and engineered systems, algae can be exposed to a variety of environmental conditions that affect growth rate and cellular composition. With respect to the latter, the amount of carbon fixed in lipids and carbohydrates (e.g., starch) is highly influenced by environmental factors and nutrient availability. Understanding synergistic interactions between multiple environmental variables and nutritional factors is required to develop sustainable high productivity bioalgae systems, which are essential for commercial biofuel production. This article reviews the effects of environmental factors (i.e., temperature, light and pH) and nutrient availability (e.g., carbon, nitrogen, phosphorus, potassium, and trace metals) as well as cross-interactions on the biochemical composition of algae with a special focus on carbon fixation and partitioning of carbon from a biofuels perspective.

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“…These nutrients can be incorporated into algae cell biomass and subsequently removed from the wastewater. Algal treatment of wastewater, mediated through a combination of nutrient uptake, elevated pH, and dissolved oxygen concentration, can offer a more ecologically safer, cheaper, and more efficient means to remove nutrients and metals from wastewater than conventional tertiary treatment [13][14][15][16]. With increasingly stringent regulations and limits on wastewater discharge, modification of conventional processes must be made to meet these new requirements.…”

Section: Introductionmentioning

confidence: 99%

Culture of Microalgae Chlamydomonas reinhardtii in Wastewater for Biomass Feedstock Production

Kong

Martínez

et al. 2009

Appl Biochem Biotechnol

348

114

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The objective of this research was to develop large-scale technologies to produce oil-rich algal biomass from wastewater. The experiments were conducted using Erlenmeyer flasks and biocoil photobioreactor. Chlamydomonas reinhardtii was grown in artificial media and wastewaters taken from three different stages of the treatment process, namely, influent, effluent, and centrate. Each of wastewaters contained different levels of nutrients. The specific growth rate of C. reinhardtii in different cultures was monitored over a period of 10 days. The biomass yield of microalgae and associated nitrogen and phosphorous removal were evaluated. Effects of CO(2) and pH on the growth were also studied. The level of nutrients greatly influenced algae growth. High levels of nutrients seem to inhibit algae growth in the beginning, but provided sustained growth to a high degree. The studies have shown that the optimal pH for C. reinhardtii is in the range of 7.5. An injection of air and a moderate amount of CO(2) promoted algae growth. However, too much CO(2) inhibited algae growth due to a significant decrease in pH. The experimental results showed that algal dry biomass yield reached a maximum of 2.0 g L(-1) day(-1) in the biocoil. The oil content of microalgae of C. reinhardtii was 25.25% (w/w) in dry biomass weight. In the biocoil, 55.8 mg nitrogen and 17.4 mg phosphorus per liter per day were effectively removed from the centrate wastewater. Ferric chloride was found to be an effective flocculent that helps the algae settle for easy harvest and separation from the culture media.

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Combination of Chlorella vulgaris and Eichhornia crassipes for wastewater nitrogen removal

Cited by 74 publications

References 3 publications

Reduction of Organic and Inorganic Pollutant from Waste Water by Algae

Reduction of Organic and Inorganic Pollutant from Waste Water by Algae

Effects of Environmental Factors and Nutrient Availability on the Biochemical Composition of Algae for Biofuels Production: A Review

Culture of Microalgae Chlamydomonas reinhardtii in Wastewater for Biomass Feedstock Production

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