Different feedstocks of biochar affected the bioavailability and uptake of heavy metals by wheat (Triticum aestivum L.) plants grown in metal contaminated soil

被引：28

作者：

Amin, Muhammad Ahmar ^{[1
]}

Haider, Ghulam ^{[2
]}

Rizwan, Muhammad ^{[3
]}

Schofield, H. Kate ^{[4
]}

Qayyum, Muhammad Farooq ^{[1
,7
]}

Zia-ur-Rehman, Muhammad ^{[5
]}

Ali, Shafaqat ^{[3
,6
,7
]}

机构：

[1] Bahauddin Zakariya Univ Multan, Fac Agr Sci & Technol, Dept Soil Sci, Multan 60800, Pakistan

[2] Natl Univ Sci & Technol NUST, Atta ur Rahman Sch Appl Biosci, Dept Plant Biotechnol, Islamabad 44000, Pakistan

[3] Govt Coll Univ, Dept Environm Sci, Faisalabad 38000, Pakistan

[4] Univ Plymouth, Biogeochem Res Ctr, Sch Geog Earth & Environm Sci, Plymouth, England

[5] Univ Agr Faisalabad, Inst Soil & Environm Sci, Faisalabad 38000, Pakistan

[6] China Med Univ, Dept Biol Sci & Technol, Taichung 40402, Taiwan

[7] Bahauddin Zakariya Univ, Fac Agr Sci & Technol, Dept Soil Sci, Multan 60800, Pakistan

来源：

ENVIRONMENTAL RESEARCH | 2023年 / 217卷

关键词：

Trace metals; Cereals; Bioaccumulation factor; Health risk index; Biochar properties; COMPOST AMENDMENTS; IMMOBILIZATION; MECHANISMS; REMOVAL; CADMIUM; ACCUMULATION; REMEDIATION; MANURE; CARBON; YIELD;

D O I：

10.1016/j.envres.2022.114845

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Heavy metals (HMs) contamination of agricultural soils is an emerging food safety challenge at world level. Therefore, as a possible treatment for the remediation of a HMs contaminated soil (sewage water irrigation for 20-years), the impact of biochar (BC) was investigated on the uptake of HMs by wheat (Triticum aestivum L.) plants. The BC was produced from seven different feedstocks (cotton stalks (CSBC), rice straw (RSBC), poultry manure (PMBC), lawn grass (LGBC), vegetable peels (VPBC), maize straw (MSBC), and rice husks (RHBC)). Each BC was applied at 1.25% (dry weight basis, w/w) in contaminated soil and a control was maintained without BC addition and wheat was grown in potted soil and harvested at maturity. Results revealed that the properties of different biochars regulated their effects on soil nutrient and HMs mobility and uptake by plants. The maximum plant phosphorous and potassium uptake and translocation to grain (173.4% and 341%, respectively) was found in RSBC treatment over control. The RHBC, PMBC, and MSBC treatments showed a maximum decrease in grain Cd concentration (32.9%, 33.8%, and 34.1%, respectively) compared to the control. The grain Pb (-41% to -51%, with no significant differences among different treatments) and Ni (-63%) concentrations were also reduced significantly following BC treatments compared to control. The daily intake and health risk index of Cd were significantly decreased due to PMBC (-28.1% and-33.8%, respectively), and MSBC (-28.3% and -34.1%, respectively) treatment over control. The BC treatments significantly increased the translocation factor of Cd in the order of VPBC (52.1%) > LGBC (25.4%) > CSBC (13.6%) > RSBC (12.1%) compared to control. The study demonstrated that the effects of BC on metal uptake in plants varied with feedstocks and suitable BC can be further exploited for the rehabilitation of contaminated soils and thereby ensuring food safety.

引用

页数：13

共 85 条

[1] Biochar-induced immobilization and transformation of silver-nanoparticles affect growth, intracellular-radicles generation and nutrients assimilation by reducing oxidative stress in maize [J].