Effect of acid modified tea-waste biochar on crop productivity of red onion (Allium cepa L.)

Peiris, Chathuri; Wathudura, Pathum; Gunatilake, Sameera R.; Gajanayake, Bandara; Wewalwela, Jayani J.; Abeysundara, Sachith; Vithanage, Meththika

doi:10.1016/j.chemosphere.2021.132551

Cited by 18 publications

(3 citation statements)

References 61 publications

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“…Soil pH plays a crucial role in controlling the solubility and availability of some essential plant nutrients [33]. The addition of EBs to the saline and non-saline soils had the strongest positive effect on the pH (Table 7).…”

Section: Discussionmentioning

confidence: 99%

Improving Phosphorus Availability and Wheat Yield in Saline Soil of the Lake Urmia Basin through Enriched Biochar and Microbial Inoculation

et al. 2023

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To reduce requirements for conventional chemical fertilizer and alleviate salinity stress in soils, a glasshouse experiment was conducted to assess the effects of enriched biochar on phosphatase activity, microbial respiration and wheat yield in non-saline and saline soils from the Lake Urmia basin (electrical conductivities 2 dS.m−1 and 15 dS.m−1, respectively). Nine treatments were tested: control, 1:1 mixture of apple and grape biochars (BC), phosphate solubilizing bacteria (PSB), BC plus PSB (BC-PSB), BC plus rock phosphate (BC-RP), BC enriched by rock phosphate and bacteria (BC-RP-PSB), BC enriched by rock phosphate and HCl (BC-RP-HCl) or H3PO4 (BC-RP-H3PO4) and chemical fertilizer (TSP). The addition of enriched biochar decreased the soil pH (by 0.5–0.9 units) and increased available phosphorus (>7-fold). In both the saline and non-saline soils, the highest alkaline phosphatase activity was obtained for BC-H3PO4-RP and BC-HCl-RP. Wheat growth parameters were reclaimed after enriched biochar application, indicating superior dry matter yields compared to the control and non-enriched biochar treatments and significantly higher yields compared to TSP. Beneficial effects on soil pH, phosphatase activity, soil respiration and biomass yield demonstrated that enriched biochar could partly substitute chemical fertilizers and increase plant growth in salt stress conditions. However, further field studies are needed to understand the benefits of enriched biochar in different soils and climates.

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Section: Discussionmentioning

confidence: 99%

Improving Phosphorus Availability and Wheat Yield in Saline Soil of the Lake Urmia Basin through Enriched Biochar and Microbial Inoculation

et al. 2023

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“…Xie et al [79] found that the application of biochar after seven wheat-maize rotations increased crop yield and explained that, especially due to amelioration of soil properties, N 2 O emissions were alleviated by increasing SOC and the strong ability to hold soil water and fertilizer. Peiris et al [80] thought that the increase in plant growth could be a result of developments in soil CEC concentration with biochar additions. On the other hand, [81] interpreted that biochar prevents Na + from entering plant cells and encourages plants to increase K + accumulation, therefore raising the Na + /K + ratio which ameliorates plant growth under saline conditions.…”

Section: Plant Biomassmentioning

confidence: 99%

Acid-Modified Biochar Impacts on Soil Properties and Biochemical Characteristics of Crops Grown in Saline-Sodic Soils

et al. 2022

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Soil salinity and sodicity is a potential soil risk and a major reason for reduced soil productivity in many areas of the world. This study was conducted to investigate the effect of different biochar raw materials and the effects of acid-modified biochar on alleviating abiotic stresses from saline-sodic soil and its effect on biochemical properties of maize and wheat productivity. A field experiment was conducted as a randomized complete block design during the seasons of 2019/2020, with five treatments and three replicates: untreated soil (CK), rice straw biochar (RSB), cotton stalk biochar (CSB), rice straw-modified biochar (RSMB), and cotton stalk-modified biochar (CSMB). FTIR and X-ray diffraction patterns indicated that acid modification of biochar has potential effects for improving its properties via porous functions, surface functional groups and mineral compositions. The CSMB treatment enhanced the soil’s physical and chemical properties and porosity via EC, ESP, CEC, SOC and BD by 28.79%, 20.95%, 11.49%, 9.09%, 11.51% and 12.68% in the upper 0–20 cm, respectively, compared to the initial properties after the second season. Soil-available N, P and K increased with modified biochar treatments compared to original biochar types. Data showed increases in grain/straw yield with CSMB amendments by 34.15% and 29.82% for maize and 25.11% and 15.03% for wheat plants, respectively, compared to the control. Total N, P and K contents in both maize and wheat plants increased significantly with biochar application. CSMB recorded the highest accumulations of proline contents and SOD, POD and CAT antioxidant enzyme activity. These results suggest that the acid-modified biochar can be considered an eco-friendly, cheaper and effective choice in alleviating abiotic stresses from saline-sodic soil and positively effects maize and wheat productivity.

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“…Biochar can be synthesized by the pyrolysis process (300 °C–700 °C) which occurs without the presence of oxygen and under limited environmental conditions. It can be produced from various residues such as rice husks, sawdust, kitchen waste, tea residues, etc. − The production processes for biochar are slow pyrolysis, fast pyrolysis, carbonization, evaporation, and hydrothermal carbonization. − The physical properties of biochar change during these processes, including elemental composition, phase structure, molecular structure, etc. Bakshi et al examined that the adsorption of Mg 2+ and Ca 2+ by nanozerovalent ions (nZVI) modified biochar is primarily due to the electrostatic interaction and ion exchange mechanism.…”

Section: Physicochemical Methodsmentioning

confidence: 99%

A Critical Review on the Sustainable Approaches for the Removal of Toxic Heavy Metals from Water Systems

Carolin

Kamalesh

Kumar³

et al. 2023

Ind. Eng. Chem. Res.

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Heavy metal pollution results in enormous environmental impacts and significant human health problems. Because of their extreme toxicity and lack of biodegradability, heavy metal ions in water are considered problematic. Although the removal of various heavy metal ions from wastewater has been widely investigated, heavy metal contamination still requires effective and suitable remediation. With special attention on heavy metal removal, this study reviews recent advances, breakthroughs, and potential applications of various physical, chemical, and biological methods. Each treatment method has specific mechanisms of interaction with metal ions, which are described in this review. The discussion in this review leads to the conclusion that adsorption has the best potential which leads to the sustainable remediation of heavy metals. In summary, the review provides a new perspective on heavy metal reduction and encourages the development of innovative strategies for heavy metal removal. The main current problems and prospects in this field are highlighted in this review.

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Effect of acid modified tea-waste biochar on crop productivity of red onion (Allium cepa L.)

Cited by 18 publications

References 61 publications

Improving Phosphorus Availability and Wheat Yield in Saline Soil of the Lake Urmia Basin through Enriched Biochar and Microbial Inoculation

Improving Phosphorus Availability and Wheat Yield in Saline Soil of the Lake Urmia Basin through Enriched Biochar and Microbial Inoculation

Acid-Modified Biochar Impacts on Soil Properties and Biochemical Characteristics of Crops Grown in Saline-Sodic Soils

A Critical Review on the Sustainable Approaches for the Removal of Toxic Heavy Metals from Water Systems

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