Water hyacinth (Eichhornia crassipes) biochar as an alternative cathode electrocatalyst in an air-cathode single chamber microbial fuel cell

Allam, Fatma; Elnouby, Mohamed; El–Khatib, K.M.; El-Badan, Dalia E.; Sabry, Soraya A.

doi:10.1016/j.ijhydene.2019.09.164

Cited by 82 publications

(30 citation statements)

References 84 publications

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“…In addition to rising demand for the constructions of more irrigation and drainage canals that infested with aquatic weeds of water hyacinth under improper maintenance. The disposal of these aquatic weed has become an increasing problem and a growing expense for the country, farmers and agricultural authorities, especially in the light of further water scarcity and climate change (Allam et al, 2020;Gaurav et al, 2020). Organic biomass in general are valuable resources when properly managed and applied to soils, both as a fertilizer and as a soil amendment.…”

Section: Introductionmentioning

confidence: 99%

“…Organic biomass can improve soil physical properties (e.g., water retention, aggregate stability), soil chemical properties (e.g., CEC, pH, EC, soil nutrient status) and the biological properties (Stratton, et al, 1995). In specific, water hyacinth aquatic weeds recover a large biomass yield of around 120 t/ha/year, contain worthy nutrients for plant growth and are therefore a potential source for staple organic matter in sandy soil reclamation projects (Allam et al, 2020;Gaurav et al, 2020). Transformation of this huge biomass into biochar would boost biocarbon stability and sequestration and support long term biocarbon storage in soils (Jeffery et al, 2011;Masto et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Water hyacinth (WH) biomass is cellulosic in nature and when it is disposed or dumped into soils, the carbon in biomass will readily decompose due to high biodegradation (Masto et al 2013;Gaurav et al, 2020). Due to their redundancy, low density and weight, low cost, recyclability and biodegradable properties, a sustainable strategy to manage these weeds are to convert water hyacinth into biochar and apply it in agriculture (Ahmed et al 2018;Allam et al, 2020;Bottezini et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Water Hyacinth Biochar as a Soil Amendment for Sandy Soils

El-Azeim

Salah

Hammam

2021

Journal of Soil Sciences and Agricultural Engineering

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Soil application of water hyacinth biochar as a source of nutrient-and carbon-rich biomass may be an effective ploy to eradicate this invasive aquatic weed. Incubation trial was conducted to assess effects of water hyacinth biochar addition on some sandy soil biochemical and biological properties and potential carbon sequestration at different application rates and methods. Results demonstrated that pyrolysis of water hyacinth at temperature of 300 °C and 30 min furnace residence time produced biochar with coveted physicochemical properties. Field emission scanning electronic microscopy (FE-SEM) images obtained for water hyacinth biochar showed major macroscopic changes caused by substantial changes in pore structure, surface area and surface morphology due to insufficient carbonization. Soil biochemical and microbiological characteristics after incubation exposed obvious significant improvements at all rates compared to control and varied markedly between addition of biochar as incorporation and broadcasting. Among different treatments, biochar addition as incorporation at the rate of 3% resulted in higher significant increases in most tested soil parameters. Water hyacinth biochar provided nitrogen and carbon immediately via SOC, DOC and DON in treated sandy soils providing energy for microbial biomass compared to control and this reflected by increases in soil values of C-MIC N-MIC and P-MIC. In addition, water hyacinth biocharring would greatly improve sandy soil carbon sequestration at high application rates. It could be concluded that water hyacinth transformation into biochar represents a sustainable strategy for managing these weeds and thus become a valuable organic source for sandy soils and will boost carbon sequestration.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of Water Hyacinth Biochar as a Soil Amendment for Sandy Soils

El-Azeim

Salah

Hammam

2021

Journal of Soil Sciences and Agricultural Engineering

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“…WH biochar has been used in many applications, such as adsorbing HMs, as a soil amendment, and for bioenergy production (Allam et al, 2020 ). Converting WH tissues into biochar to remediate wastewater could be a win-win strategy for both removing pollutants and the effective management of a highly problematical invasive species (Yu et al, 2018 ; da Silva Correia et al, 2018 ).…”

Section: Black Tea and Water Hyacinthmentioning

confidence: 99%

“…Based on SEM micrographs, WH biochar has a non-homogeneous, coarse, and porous surface that has many different (in size, shape, and depth) pores (Allam et al, 2020 ) (Fig. 2 ).…”

Section: Black Tea and Water Hyacinthmentioning

confidence: 99%

Ecofriendly remediation technologies for wastewater contaminated with heavy metals with special focus on using water hyacinth and black tea wastes: a review

Elbasiouny

Darwesh

Elbeltagy

et al. 2021

Environ Monit Assess

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Treatment of water contaminated with heavy metals is challenging. Heavy metals are non-degradable, persistent in the environment, have a high dispersion capacity by water, can bioaccumulate, and represent risks to human and environmental health. Conventional treatment methods have disadvantages; however, adsorption in biomass is a highly promising method with high efficiency and low cost that avoids many of the disadvantages of conventional methods. Black tea (BT) wastes and water hyacinth (WH) have attracted attention for their ability to remove heavy metals from wastewater. Utilizing these approaches can remove contaminants and effectively manage problematic invasive species and wastes. The conventional uses of BT and WH were efficient for removing heavy metals from wastewater. Due to the unique and distinct properties and advantages of biochar and nano-forms of biosorbents, the use of BT and WH in these forms is promising to achieve sustainable heavy metals removal from wastewater. However, more study is needed to confirm preliminary results.

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Performance of iron – doped activated carbon synthesised from cocoa husk as a cathode catalyst in microbial fuel cell powered Fenton process

John,

Ajit,

Krishnan

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDBio‐electro‐Fenton (BEF) systems, specifically microbial fuel cell (MFC) driven electro‐Fenton (EF) systems, have gained significant attention in wastewater treatment in recent years. The role of the cathode catalyst in BEF is crucial, as it undergoes O2 reduction via a 2e− oxygen reduction reaction (ORR) to produce H2O2. In this study, we have harnessed the abundant lignocellulosic composition of cocoa pod husk (CPH) to prepare a novel iron‐doped heterogeneous Fenton catalyst for the BEF system. Cocoa is typically grown for its wet beans, which constitute only one third of cocoa fruit by weight, while CPH makes up about two‐thirds of the weight and is often discarded as by‐product or waste. As a result, approximately 10 million tons of CPH are produced globally each year, highlighting the potential for transforming it into a value‐added product. To date, CPH has been utilised as a natural fertiliser, soil amendment, biomass fuel, poultry and livestock feed ingredient, and more.RESULTSThe presence of mesoporous structure, iron content, oxygen containing functional groups, and prominent reduction peaks in cyclic voltammetry validated the Fe‐doped cocoa husk biochar's (Fe‐CHB) potential to act as an ORR catalyst. The BEF system achieved an open circuit voltage, current, and power densities of 0.697 V, 0.15 A/m2, and 0.040 W/m2, respectively, at an optimum resistance of 350 Ω. Optimisation of the process parameters using RSM and ANN predicted maximum dye removal efficiencies of 93.34% and 92.45%, respectively, at dye and substrate concentrations of 10 mg/L and 1 g/L. These predictions closely aligned with the experimental findings of 92.5%.CONCLUSIONThe synthesised catalyst provided large surface area, electrical conductivity, superior ORR catalytic efficiencies, and ample sites for H2O2 activation. Hence, Fe‐CHB can serve as a highly effective electrocatalyst in BEF systems. © 2024 Society of Chemical Industry (SCI).

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Water hyacinth (Eichhornia crassipes) biochar as an alternative cathode electrocatalyst in an air-cathode single chamber microbial fuel cell

Cited by 82 publications

References 84 publications

Assessment of Water Hyacinth Biochar as a Soil Amendment for Sandy Soils

Assessment of Water Hyacinth Biochar as a Soil Amendment for Sandy Soils

Ecofriendly remediation technologies for wastewater contaminated with heavy metals with special focus on using water hyacinth and black tea wastes: a review

Performance of iron – doped activated carbon synthesised from cocoa husk as a cathode catalyst in microbial fuel cell powered Fenton process

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