NDLI: Toxicity Evaluation of Sewage Sludge Before and After Composting Process

Content Provider	IEEE Xplore Digital Library
Author	Qiang Liu Ling Chen You Huang Wuliang Cheng Jianfu Zhao Qiang Liu
Copyright Year	2008
Description	Author affiliation: State Key of Pollution Control & Resource Reuse, Tongji Univ., Shanghai (Qiang Liu; Ling Chen; You Huang; Wuliang Cheng; Jianfu Zhao)
Abstract	Sewage sludge and the compost were evaluated through chemical characterization and toxicity testing to determine their suitability for land application. The application of sewage sludge/compost, slightly acidic with pH rang of 6.4-6.5, decreased the soil pH. The higher the sewage sludge/compost rates, the higher the mixed soil contents of electrical conductivity (EC), organic matter (OM), nitrogen (N) and phosphorus (P), with N and P in sludge significantly higher than those in compost. Metal speciation of sludge showed that Cu and Ni predominantly existed in organic and residual phases, while Zn did not show any dominant chemical phase. And the available forms of Zn and Ni were significantly decreased after sewage sludge composting. The sludge extracts exerted a stronger inhibition of germination index than compost extracts, indicating the higher adverse effects derived from sludge. In view of its lower EC, the higher NH4-N content and available forms of Zn, Ni in sewage sludge would partly be responsible. The highest biomass of tall fescue was inhibited at a sludge ratio >5% or a compost ratio >20%, suggesting that sewage sludge after composting process was more suitable for land application.
Starting Page	4117
Ending Page	4120
File Size	203684
Page Count	4
File Format	PDF
ISBN	9781424417476
DOI	10.1109/ICBBE.2008.530
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pathogens Crops Production Soil Aerodynamics Biomass Organic chemicals Wastewater treatment Zinc Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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