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1. Freshwater microalgae niche of air carbon dioxide mitigation

Author:
Ramaraj, Rameshprabu; Tsai, David Dah-Wei; Chen, Paris Honglay
Source:
Ecological engineering 2014 v.68 pp. 47-52
ISSN:
0925-8574
Subject:
air; biomass; carbon; carbon cycle; carbon dioxide; carbon dioxide fixation; carbon sinks; ecosystems; freshwater; microalgae
Abstract:
... The effectiveness of the niche of freshwater algae as a remover of carbon dioxide (CO2) from the ecosystem, and its potential to perpetuate carbon cycle are to be systematically investigated. In this study, using unsupplemented natural freshwater medium, we investigated the freshwater microalgal sequestration of atmospheric CO2 in the laboratory. The microalgal fixation of carbon, calculated by ma ...
DOI:
10.1016/j.ecoleng.2014.03.058

2. In situ soil respiration at reclaimed and unreclaimed post-mining sites: Responses to temperature and reclamation treatment

Author:
Bujalský, Luděk; Kaneda, Satoshi; Dvorščík, Petr; Frouz, Jan
Source:
Ecological engineering 2014 v.68 pp. 53-59
ISSN:
0925-8574
Subject:
Betula; biomass; carbon; carbon dioxide; chronosequences; coal; mining; planting; shade; soil pH; soil respiration; soil temperature; terrestrial ecosystems; Czech Republic
Abstract:
... Soil respiration accounts for much of the CO2 released from terrestrial ecosystems into the atmosphere. Although respiration depends on temperature, the relationship between respiration and temperature may vary among soils. Here, we measured soil respiration and soil temperature in chronosequences of reclaimed and unreclaimed post-mining sites (10–50-year-old coal mining heaps near Sokolov, the Cz ...
DOI:
10.1016/j.ecoleng.2014.03.048

3. Soil carbon sequestration potential of Jatropha curcas L. growing in varying soil conditions

Author:
Srivastava, Pankaj; Sharma, Yogesh K.; Singh, Nandita
Source:
Ecological engineering 2014 v.68 pp. 155-166
ISSN:
0925-8574
Subject:
Jatropha curcas; belowground biomass; biofuels; carbon; carbon sequestration; carbon sinks; fuel production; microbial biomass; nitrogen content; nutrients; phosphorus; phytomass; plantations; potassium; soil; soil enzymes; soil quality; soil restoration; India
Abstract:
... The present study was aimed to evaluate the soil carbon sequestration and reclamation potential of Jatropha curcas L. (JCL) growing in varying soil conditions. For this, a study was conducted during 2008–2012 at four different sites of Jatropha plantations (Banthara, Gajaria, Bakshi ka talab and NBRI) growing in central India. Periodic sampling was done for plant biomass, litter turn over, microbi ...
DOI:
10.1016/j.ecoleng.2014.03.031

4. Three-stage horizontal subsurface flow constructed wetlands for organics and nitrogen removal: Effect of aeration

Author:
Li, Fengmin; Lu, Lun; Zheng, Xiang; Zhang, Xiuwen
Source:
Ecological engineering 2014 v.68 pp. 90-96
ISSN:
0925-8574
Subject:
aeration; ammonium nitrogen; carbon; chemical oxygen demand; constructed wetlands; denitrification; dissolved oxygen; municipal wastewater; nitrogen; rural areas; subsurface flow; wastewater treatment; water purification
Abstract:
... Improving nitrogen removal in wastewater treatment is necessary for the extensive and effective use of constructed wetlands (CWs) in rural areas. Six different three-stage horizontal subsurface flow (HSSF) CWs were designed to examine the effects of artificial aeration and aeration location on the treatment of organics and nitrogen. In a typical configuration (unaerated surface and subsurface flow ...
DOI:
10.1016/j.ecoleng.2014.03.025