Variation and factors on heavy metal speciation during co-composting of rural sewage sludge and typical rural organic solid waste

2022 ◽  
Vol 306 ◽  
pp. 114418
Author(s):  
Su Xu ◽  
Lin Li ◽  
Jun Zhan ◽  
Xuesong Guo
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Solid Waste ◽  
Metal Speciation ◽  
Organic Solid Waste ◽  
Heavy Metal Speciation ◽  
Organic Solid

scholarly journals Co-composting of organic solid waste and sewage sludge – a waste management option for University Campus

2016 ◽  
Vol 5 (1) ◽  
pp. 14-31 ◽  
Author(s):  
Bernard Fei-Baffoe ◽  
Kenneth Osei ◽  
Eric Appiah Agyapong ◽  
Eugene Atta Nyankson
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Solid Waste ◽  
Organic Fertilizer ◽  
University Campus ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
General Decline ◽  
Major Nutrients ◽  
Dewatered Sewage Sludge

Co-composting organic solid waste with dewatered sewage sludge was carried out to determine its suitability for managing waste on a University campus. Windrow composting method was employed in which dewatered sewage sludge and organic solid waste were mixed at volume ratios: 1:1, 1:2, 1:3, 0:1 and 1:0 sludge/organic solid waste. Parameters such as pH, percentage N, C, P, K, Ca, Mg, organic matter, ash content and C/N ratio were determined weekly. Total and faecal coliform population were measured biweekly with Pb and Cd levels determined at the beginning and end of the composting. With the exception of ratio 1:0 sludge/organic solid waste, all other ratios attained a favourable Carbon to Nitrogen (C/N) ratio both at the start and end of the composting process. Levels of major nutrients measured were found to be favourable for use as organic fertilizer. There was a general decline in carbon and organic matter in all the compost piles except the sewage sludge pile (1:0). Apart from the compost ratio 1:0 sludge/organic solid waste, all other ratios attained a temperature of 55°C within 8 days of composting. Generally the compost ratios 1:2, 1:3 and 0:1 (sludge/organic solid waste) were found to be the most suitable for use as organic fertilizer.     International Journal of Environment Vol. 5 (1) 2016,  pp: 14-31     

Impact of sewage sludge spreading on heavy metal speciation in tropical soils (Réunion, Indian Ocean)

Chemosphere ◽  
2006 ◽  
Vol 65 (2) ◽  
pp. 286-293 ◽  
Author(s):  
Emmanuel Dœlsch ◽  
Béatrice Deroche ◽  
Virginie Van de Kerchove
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Indian Ocean ◽  
Metal Speciation ◽  
Tropical Soils ◽  
Heavy Metal Speciation
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