Reclamation of zinc-contaminated soil using a dissolved organic carbon solution prepared using liquid fertilizer from food-waste composting

Chiang, Po‐Neng; Ouyang, Tong; Chiou, Chyow-San; Lin, Yuan; Wang, Ming-Kuang; Liu, Cheng‐Chung

doi:10.1016/j.jhazmat.2015.08.015

Cited by 39 publications

(18 citation statements)

References 21 publications

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“…DOC solutions are very useful in the adsorption of heavy metals such as Zn, Cu, and Pb in soils. The use of liquid fertilizer from composting processes was more efficient in reclaiming zinc-contaminated soil and the resulting fertility index were found to significantly increase as well, making it more favourable than the conventional use of acidic aqueous solutions [46]. Compost added with biochar has also produced positive results in continuous watermelon monocropping system.…”

Section: Food Waste Compostingmentioning

confidence: 99%

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Transformation of Biomass Waste into Sustainable Organic Fertilizers

et al. 2019

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The management of solid waste presents a challenge for developing countries as thegeneration of waste is increasing at a rapid and alarming rate. Much awareness towards thesustainability and technological advances for solid waste management has been implemented toreduce the generation of unnecessary waste. The recycling of this waste is being applied to producevaluable organic matter, which can be used as fertilizers or amendments to improve the soil structure.This review studies the sustainable transformation of various types of biomass waste such as animalmanure, sewage sludge, municipal solid waste, and food waste, into organic fertilizers and theirimpact on waste minimization and agricultural enhancement. The side effects of these organicfertilizers towards the soil are evaluated as the characteristics of these fertilizers will differ dependingon the types of waste used, in addition to the varying chemical composition of the organic fertilizers.This work will provide an insight to the potential management of biomass waste to be produced intoorganic fertilizer and the advantages of substituting chemical fertilizer with organic fertilizer derivedfrom the biomass waste.

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Section: Food Waste Compostingmentioning

confidence: 99%

“…Compost has been used as fertilizers [44], organic amendments [45], for land reclamation [46], and many more agricultural applications ( Table 1). The recycling of olive mill waste as an organic compost can enhance soil fertility as well as reduce the CO 2 emissions.…”

Section: Food Waste Compostingmentioning

confidence: 99%

Transformation of Biomass Waste into Sustainable Organic Fertilizers

et al. 2019

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“…biochar and organic composts) in the remediation of Zn-contaminated acid soils or sites have been widely reported (e.g. Soares et al., 2015, Chiang et al., 2016, Shen et al., 2016). However, BCP shows additional potential in remediation technology through augmenting the production of microbial EPS and SMP.…”

Section: Resultsmentioning

confidence: 99%

Zinc toxicity stimulates microbial production of extracellular polymers in a copiotrophic acid soil

Redmile-Gordon

Chen

2017

International Biodeterioration & Biodegradation

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The production of extracellular polymeric substances (EPS) is crucial for biofilm structure, microbial nutrition and proximal stability of habitat in a variety of environments. However, the production patterns of microbial EPS in soils as affected by heavy metal contamination remain uncertain. Here we investigate the extracellular response of the native microbial biomass in a grassland soil treated with refined glycerol or crude unrefined biodiesel co-product (BCP) with and without ZnCl2. We extracted microbial EPS and more readily soluble microbial products (SMP), and quantified total polysaccharide, uronic acid, and protein content in these respective extracts. Organic addition, especially BCP, significantly stimulated the production of EPS-polysaccharide and protein but had no impact on EPS-uronic acids, while in the SMP-fraction, polysaccharides and uronic acids were both significantly increased. In response to the inclusion of Zn2+, both EPS- and SMP-polysaccharides increased. This implies firstly that a tolerance mechanism of soil microorganisms against Zn2+ toxicity exists through the stimulation of SMP and EPS production, and secondly that co-products of biofuel industries may have value-added use in bioremediation efforts to support in-situ production of microbial biopolymers. Microbial films and mobile polymers are likely to impact a range of soil properties. The recent focus on EPS research in soils is anticipated to help contribute an improved understanding of biofilm dynamics in other complex systems - such as continuously operated bioreactors.

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“…If a WA is to be used at technical scale, it should be both effective and relatively cheap. Preferably, it would also be recovered from waste, and some WAs of organic waste origin have recently been tested (Chiang et al 2016;Dai et al 2017). Sewage sludge may constitute another waste source of WAs.…”

Section: Introductionmentioning

confidence: 99%

“…When selecting a WA, priority should be given to the effectiveness of the WA, but if possible, soil valorization should also be considered, including the effect of the WA on soil organic matter content. Recently, studies have begun to consider the changes in soil nutrient and organic matter content after soil washing (Chen et al 2014;Chiang et al 2016;Wang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Washing agents from sewage sludge: efficiency of Cd removal from highly contaminated soils and effect on soil organic balance

et al. 2019

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Purpose To compare Cd removal from different soils with three washing agents recovered from sewage sludge (dissolved organic matter (DOM), soluble humic-like substances (HLS), soluble humic substances (SHS)). Also, to investigate how washing with these agents changes soil organic-matter composition (OM). Materials and methods Sandy clay loam (S1) and clay (S2) highly contaminated with Cd (300 mg kg −1) were washed with DOM, HLS, or SHS solutions at various pHs, and with various washing times and washing modes (single or double). Cd distribution and OM composition were determined (including content of humic substances (HS), fulvic fraction (FF), labile humic acids (L-HA), and stable humic acids (S-HA)). Results and discussion Cd removal proceeded with pseudo-second-order kinetics. Equilibrium was reached in 30 min (S1) and 60 min (S2). DOM, HLS, and SHS removed 75-82% of Cd from S1, and 80-87% from S2. The most mobile fraction of Cd was removed after one wash. S2 retained more OM, including HS, than S1. Although washing did not change the HA/FF ratio in most variants, washing with DOM and HLS increased the percentage of L-HA in both soils. Washing with SHS increased S-HA content in both soils, but the percent content of S-HA was similar to that in the unwashed soil. Conclusions DOM, HLS, and SHS derived from sewage sludge can effectively remediate clay and sandy clay soils highly contaminated with Cd. Washing with an SHS solution can increase the content of the most stable carbon forms (HA), which is beneficial for carbon sequestration in remediated soils.

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Reclamation of zinc-contaminated soil using a dissolved organic carbon solution prepared using liquid fertilizer from food-waste composting

Cited by 39 publications

References 21 publications

Transformation of Biomass Waste into Sustainable Organic Fertilizers

Transformation of Biomass Waste into Sustainable Organic Fertilizers

Zinc toxicity stimulates microbial production of extracellular polymers in a copiotrophic acid soil

Washing agents from sewage sludge: efficiency of Cd removal from highly contaminated soils and effect on soil organic balance

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