Biochar amendment for integrated composting and vermicomposting of sewage sludge - The effect of biochar on the activity of Eisenia fetida and the obtained vermicompost

被引：88

作者：

Malinska, Krystyna ^{[1
]}

Golanska, Malgorzata ^{[1
]}

Caceres, Rafaela ^{[2
]}

Rorat, Agnieszka ^{[1
]}

Weisser, Patryk ^{[3
]}

Slezak, Ewelina ^{[3
]}

机构：

[1] Czestochowa Tech Univ, Inst Environm Engn, Brzeznicka 60A, PL-42200 Czestochowa, Poland

[2] Food & Agr IRTA, Res & Technol, GIRO Unit, Carretera Cabrils Km 2, Barcelona 08348, Spain

[3] Inst Ceram & Bldg Mat Opole, Oswiecimska 21, PL-45641 Opole, Poland

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 225卷

关键词：

Combined processes; Vermicompost; Reproduction rate; Heavy metals; Acidification; HEAVY-METALS; METAPHIRE-POSTHUMA; CONTAMINATED SOIL; SOLID FRACTION; CATTLE SLURRY; COW DUNG; STABILIZATION; WASTE; BIOAVAILABILITY; MANURE;

D O I：

10.1016/j.biortech.2016.11.049

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Sewage sludge derived biochar (SSDB) was used as a supplementary material for municipal sewage sludge (SS) and wood chips mixtures (WC) treated by combined composting and vermicomposting. SSDB added to the mixture before composting resulted in significantly higher reproduction rate: on week 4 the number of cocoons increased by 213% when compared to the mixture with no biochar. On week 6 the average number of juveniles increased 11-fold in the mixture with biochar added before composting and 5-fold in the mixtures with biochar added after composting when compared to the mixture with no biochar. Biochar added before composting reduced bioavailability of Cd and Zn to E. fetida. The biochar-added vermicomposts showed good fertilizing properties except for elevated concentrations of Cr. The pH of all vermicomposts was in the range of 5.27-5.61. The obtained vermicomposts can be used as a growing medium for horticultural purposes or as an amendment in calcareous soils. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：206 / 214

页数：9

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