2015
DOI: 10.1021/acs.est.5b02858
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Closing Domestic Nutrient Cycles Using Microalgae

Abstract: This study demonstrates that microalgae can effectively recover all P and N from anaerobically treated black water (toilet wastewater). Thus, enabling the removal of nutrients from the black water and the generation of a valuable algae product in one step. Screening experiments with green microalgae and cyanobacteria showed that all tested green microalgae species successfully grew on anaerobically treated black water. In a subsequent controlled experiment in flat-panel photobioreactors, Chlorella sorokiniana … Show more

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Cited by 68 publications
(43 citation statements)
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“…Chemical processes are highly efficient, but the requirement of a lot of flocculant dosages renders the harvested biomass contaminated with undesirable chemicals [7, 8]. Biologically induced harvesting of algal cells is now being explored as a replacement for the conventional algal dewatering processes which contribute towards 3–15% of the algal biomass production cost [9, 10]. The harvested biomass can be processed for biofuel generation without any loss of quality [11, 12].…”
Section: Introductionmentioning
confidence: 99%
“…Chemical processes are highly efficient, but the requirement of a lot of flocculant dosages renders the harvested biomass contaminated with undesirable chemicals [7, 8]. Biologically induced harvesting of algal cells is now being explored as a replacement for the conventional algal dewatering processes which contribute towards 3–15% of the algal biomass production cost [9, 10]. The harvested biomass can be processed for biofuel generation without any loss of quality [11, 12].…”
Section: Introductionmentioning
confidence: 99%
“…Wastewater with animal manure and human excreta can reach N:P ratios up to 40 ( Kumar et al, 2010 ; Tuantet et al, 2013 ). In concentrated toilet wastewater (i.e., black water), the N:P ratio usually varies from 20 to 30 ( Vasconcelos Fernandes et al, 2015 ). Earlier work has demonstrated how the microalga Chlorella sorokiniana can fully remove N and P from black water with 76 mmol NH 4 + L -1 and 3.4 mmol , yielding an N:P ratio of 22.…”
Section: Introductionmentioning
confidence: 99%
“…Earlier work has demonstrated how the microalga Chlorella sorokiniana can fully remove N and P from black water with 76 mmol NH 4 + L -1 and 3.4 mmol , yielding an N:P ratio of 22. All P was removed from the black water in 4 days, but another 8 days were needed for all N to be removed ( Vasconcelos Fernandes et al, 2015 ). This may be due to the high N:P ratio of the black water, as well as due to a low N relative to P removal and recovery by the microalgae.…”
Section: Introductionmentioning
confidence: 99%
“…As the world’s population continues to grow, more and more wastewater is produced1, and accordingly, developing more effective wastewater treatment technologies has become one of the major challenges of modern society2. Conventional wastewater treatment plants (WWTPs) technology such as upflow anaerobic sludge blanket (UASB) has been demonstrated effective in treating some industrial wastewater (e.g.…”
mentioning
confidence: 99%