Effect of biochar amendment on sorption and leaching of nitrate, ammonium, and phosphate in a sandy soil

Yao, Ying; Gao, Bin; Zhang, Ming; Inyang, Mandu; Zimmerman, Andrew R.

doi:10.1016/j.chemosphere.2012.06.002

Cited by 813 publications

(446 citation statements)

References 26 publications

Supporting

Mentioning

344

Contrasting

Unclassified

Order By: Relevance

“…Biochar amendment also did not influence the cumulative concentration of P in leachates. Previous studies suggested that P was not likely sorbed to the surface of the majority types of biochar (Yao et al 2012;Hale et al 2013;Zheng et al 2013) due to the negative surface charges. Therefore, negligible effect of EFB biochar on P release pattern was expected and confirmed by the leaching results.…”

Section: Discussionmentioning

confidence: 99%

Biochar-compost mixture as amendment for improvement of polybag-growing media and oil palm seedlings at main nursery stage

Radin

Bakar

Ishak

et al. 2017

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

Purpose Production of oil palm seedling in the nursery mainly utilises top soil as polybag medium. These soils, especially in tropical regions, are acidic and have low organic matter content. The aim of this study was to investigate the effects of oil palm empty fruit bunch (EFB) biochar and compost incorporation as amendment in polybag medium for oil palm seedlings growth at the nursery stage. Methods A polybag experiment was conducted with four biochar rates (0, 0.5, 1.0 and 1.5% w/w C addition), two compost rates (0 and 30% v/v), and two fertiliser application rates (75 and 100% of recommended rate). The effects of biochar, compost, and biochar-compost combination on oil palm seedling growth was evaluated and the effectiveness of EFB biochar in retaining soil nutrients was determined indirectly by measuring amount of nutrient leached through the polybag medium. Results Biochar, compost, and biochar-compost amendment improved polybag media's chemical properties (pH, total C and N, C:N ratio, CEC, Mg, and Ca). There were no significant effects of the amendments on shoot biomass. However, root growth and shoot:root ratio significantly improved with 1.5% w/w C addition and 30% (v/v) compost with 75% recommended fertiliser rates applied. Furthermore, nutrient leaching measurement indicates that, EFB biochar significantly reduced ammonium-N leaching up to 21-46%. Conclusions Overall, this study demonstrates the potential of biochar and compost co-application to improve the chemical properties of polybag medium and root development of oil palm seedlings.

show abstract

Section: Discussionmentioning

confidence: 99%

Biochar-compost mixture as amendment for improvement of polybag-growing media and oil palm seedlings at main nursery stage

Radin

Bakar

Ishak

et al. 2017

Int J Recycl Org Waste Agricult

View full text Add to dashboard Cite

show abstract

“…Compared to peat, the longer decomposition half-life of high-temperature BCs such as the one in this study, and the potential of nutrient ions to bind to BC (Gai et al, 2014;Lehmann and Joseph, 2015;Yao et al, 2012) and re-solubilize when applied to soils (Joseph et al, 2013;Yao et al, 2013) raises the possibility of re-using BC-based substrates as fertilizers.…”

Section: Additional Advantages and Possibilities Of Bc Substitution Fmentioning

confidence: 99%

Substitution of peat moss with softwood biochar for soil-free marigold growth

Margenot

Griffin

Alves

et al. 2018

Industrial Crops and Products

View full text Add to dashboard Cite

A B S T R A C TPeat moss has historically been a key component of soil-free substrates in the greenhouse and nursery industries. However, the increasing expense of peat, negative impacts of peat mining on wetland ecosystems, and growing perception of peat as unsustainable have led to investigation for alternatives. Biochar (BC) is a promising substitute for peat, yet the majority of studies examine additions of BC to peat-based substrates rather than replacing the peat component or employ relatively low substitution rates. Furthermore, at high substitution rates the alkalinity common to many BCs may increase substrate pH and adversely impact plant production. We evaluated BC substitution for peat and pH adjustment of resulting substrates on marigold (Tagetes erecta L.) performance under standard greenhouse conditions. A high pH (10.9) softwood BC (800°C) was substituted for peat in a standard 70:30 (v/v) peat:perlite mixture at 10% total volume increments. Substrate pH was either not adjusted or adjusted to pH 5.8 using a BC by-product, pyroligneous acid (PLA). Germination was inhibited in pH adjusted substrates with high BC substitution (50-70% total substrate volume) likely due to higher dosages of PLA needed to neutralize pH. At harvest (flowering stage, 9 weeks) the initial pH gradient (4.4-10.4) in substrates that were not pH adjusted had converged to pH 5.6-7.5, and BC substitution for peat did not negatively impact marigold biomass or flowering. At low substitution rates (10-30% total substrate volume), marigold biomass and leaf SPAD values were greater than the control peat-perlite mixture (0% BC). This study demonstrates that softwood BC can be considered as a full replacement for peat in soil-free substrates, and even at high rates (70% total substrate volume) does not require pH adjustment for marigold production. Crop-and BC-specific considerations and economic potential should be investigated for wider application.

show abstract

“…Furthermore, Gupta et al [7] reported that augmenting media with biochar in constructed laboratory scale constructed wetland improved nitrogen and phosphorus removal from wastewater. On the other hand, Yao et al [6] found that the effects of the addition of biochar to sand media were not universal and it depended on the biomass origin of the biochar. Other researchers also reported that biochar preparation conditions, such as pyrolysis method, pre-treatment, heating rate and time and final pyrolysis temperature also affected the adsorption characteristics of the biochar [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…A number of researchers reported that biochar can be used to remove nutrients from aqueous solutions in batch and column experiments [4][5][6]. Furthermore, Gupta et al [7] reported that augmenting media with biochar in constructed laboratory scale constructed wetland improved nitrogen and phosphorus removal from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Removal of nitrate, ammonia and phosphate from aqueous solutions in packed bed filter using biochar augmented sand media

2017

View full text Add to dashboard Cite

Abstract.Nutrients from wastewater are a major source of pollution because they can cause significant impact on the ecosystem. Accordingly, it is important that the nutrient concentrations are kept to admissible levels to the receiving environment. Often regulatory limits are set on the maximum allowable concentrations in the effluent. Therefore, wastewater must be treated to meet safe levels of discharge. In this study, laboratory investigation of the efficiency of packed bed filters to remove nitrate, ammonium and phosphate from aqueous solutions were conducted. Sand and sand augmented with hydrochloric acid treated biochar (SBC) were used as packing media. Synthetic wastewater solution was prepared with PO4 3-, NO3 -, NH4 + concentrations 20, 10, 50 mg/L, respectively. Each experiment ran for a period of five days; samples from the effluent were collected on alternate days. All experiments were duplicated. Over the experiment period, the average removal efficiency of PO4 3-, NO3 -, NH4 + were 99.2%, 72.9%, 96.7% in the sand packed columns and 99.2%, 82.3%, 97.4% in the SBC packed columns, respectively. Although, the presence of biochar in the packing media had little effect on phosphate and ammonium removal, it significantly improved nitrate removal.

show abstract

Effect of biochar amendment on sorption and leaching of nitrate, ammonium, and phosphate in a sandy soil

Cited by 813 publications

References 26 publications

Biochar-compost mixture as amendment for improvement of polybag-growing media and oil palm seedlings at main nursery stage

Biochar-compost mixture as amendment for improvement of polybag-growing media and oil palm seedlings at main nursery stage

Substitution of peat moss with softwood biochar for soil-free marigold growth

Removal of nitrate, ammonia and phosphate from aqueous solutions in packed bed filter using biochar augmented sand media

Contact Info

Product

Resources

About