Evaluation of Compost and Biochar to Mitigate Chlorpyrifos Pollution in Soil and Their Effect on Soil Enzyme Dynamics

Humera Aziz, Xiukang Wang, Ghulam Murtaza, Ambreen Ashar, Sarfraz Hussain, Muhammad Abid, Behzad Murtaza, Muhammad Hamzah Saleem, Sajid Fiaz and Shafaqat Ali
Additional contact information
Humera Aziz: Department of Environmental Sciences and Engineering, Government College University, Faisalabad 38040, Pakistan
Xiukang Wang: College of Life Sciences, Yan’an University, Yan’an 716000, China
Ghulam Murtaza: Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38000, Pakistan
Ambreen Ashar: Department of Chemistry, Government College Women University, Faisalabad 38860, Pakistan
Sarfraz Hussain: Pesticide Quality Control Laboratory, Ayub Agricultural Research Institute, Faisalabad 38850, Pakistan
Muhammad Abid: Department of Statistics, Government College University, Faisalabad 38000, Pakistan
Behzad Murtaza: Department of Environmental Sciences, Vehari-Campus, COMSATS University Islamabad, Vehari 61100, Pakistan
Muhammad Hamzah Saleem: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
Sajid Fiaz: Department of Plant Breeding and Genetics, The University of Haripur, Haripur 22620, Pakistan
Shafaqat Ali: Department of Environmental Sciences and Engineering, Government College University, Faisalabad 38040, Pakistan

Sustainability, 2021, vol. 13, issue 17, 1-15

Abstract: The widespread environmental contamination of chlorpyrifos (CP) has raised human health concerns and necessitated cost-effective methods for its remediation. The current study evaluated the degradation behavior of CP in compost and biochar amended and unamended (original and sterilized) soils in an incubation trial. Two levels of CP (100 and 200 mg kg −1 ), compost and biochar (0.50%) were applied, and soil was collected at different time intervals. At the higher CP level (200 mg kg −1 ), CP a showed lower degradation rate (ƙ = 0.0102 mg kg −1 d −1 ) compared with a low CP level (ƙ = 0.0173 mg kg −1 d −1 ). The half-lives of CP were 40 and 68 days for CP at 100 and 200 mg kg −1 in original soil, respectively, and increased to 94 and 141 days in sterilized soils. CP degradation was accelerated in compost amended soils, while suppressed in biochar amended soils. Lower half lives of 20 and 37 days were observed with compost application at CP 100 and 200 mg kg −1 doses, respectively. The activities of soil enzymes were considerably affected by the CP contamination and significantly recovered in compost and biochar amended soils. In conclusion, the application of organic amendments especially compost is an important strategy for the remediation of CP contaminated soil.

Keywords: biochar; chlorpyrifos; compost; pollution; remediation; soil enzymes activities (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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