Environment enhancing energy -The analysis of carbon capture, nutrient reuse and energy production of a novel wastewater treatment system that incorporates large scale algal biofuel production

Yan Zhou, Lance Schideman, Yuanhui Zhang, Guo Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel system, ―Environment-Enhancing Energy (E2-Energy), for algal biofuel production is proposed that integrates algal biomass production during wastewater treatment and hydrothermal liquefaction of that biomass into bio-crude oil. This novel system resolves several key bottlenecks for large-scale algal biofuel production including the contamination of target high-oil algal cultures, high nutrient cost inputs, as well as the significant energy inputs for dewatering/extraction. This approach could ultimately replace petroleum imports using only waste inputs and carbon dioxide from the atmosphere. A series of algae cultivation and hydrothermal liquefaction experiments have been conducted to confirm several key characteristics of this novel system and have been presented previously (WEFTEC 2011). In this study, a mathematical model for E2-Energy was also developed using the STELLA modeling tool in order to simulate the continuous operation of E2-Energy system and the result showed that this process effectively leverages the waste nutrients for maximum biomass production and carbon capture, and the biomass produced could be up to 8 times of the original mass of biosolids in the wastewater, and could ultimately replace petroleum imports using only waste inputs and carbon dioxide from the atmosphere.

Original languageEnglish (US)
Title of host publicationWEFTEC 2012 - 85th Annual Technical Exhibition and Conference
PublisherWater Environment Federation
Pages3659-3671
Number of pages13
ISBN (Electronic)9781510870437
StatePublished - 2012
Event85th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2012 - New Orleans, United States
Duration: Sep 29 2012Oct 3 2012

Publication series

NameWEFTEC 2012 - 85th Annual Technical Exhibition and Conference
Volume6

Conference

Conference85th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2012
Country/TerritoryUnited States
CityNew Orleans
Period9/29/1210/3/12

Keywords

  • Algae
  • Biofuel
  • Carbon capture
  • Hydrothermal liquefaction
  • Nutrient recycle
  • Wastewater treatment

ASJC Scopus subject areas

  • Ecological Modeling
  • Environmental Chemistry
  • Pollution
  • Waste Management and Disposal
  • Water Science and Technology

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