Potential applications of rice husk ash waste from rice husk biomass power plant

Pode, Ramchandra

doi:10.1016/j.rser.2015.09.051

Cited by 598 publications

(235 citation statements)

References 86 publications

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“…Biochar also increased total soil carbon at higher rates than returning straw to the soil. The carbon in biochar can exist in soils over long time scales, and biochar increases soil porosity, while reducing soil bulk density [216].…”

Section: Soil Amendments and Tillagementioning

confidence: 99%

Managing Water and Soils to Achieve Adaptation and Reduce Methane Emissions and Arsenic Contamination in Asian Rice Production

Wichelns

2016

Water

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Rice production is susceptible to damage from the changes in temperature and rainfall patterns, and in the frequency of major storm events that will accompany climate change. Deltaic areas, in which millions of farmers cultivate from one to three crops of rice per year, are susceptible also to the impacts of a rising sea level, submergence during major storm events, and saline intrusion into groundwater and surface water resources. In this paper, I review the current state of knowledge regarding the potential impacts of climate change on rice production and I describe adaptation measures that involve soil and water management. In many areas, farmers will need to modify crop choices, crop calendars, and soil and water management practices as they adapt to climate change. Adaptation measures at the local, regional, and international levels also will be helpful in moderating the potential impacts of climate change on aggregate rice production and on household food security in many countries. Some of the changes in soil and water management and other production practices that will be implemented in response to climate change also will reduce methane generation and release from rice fields. Some of the measures also will reduce the uptake of arsenic in rice plants, thus addressing an important public health issue in portions of South and Southeast Asia. Where feasible, replacing continuously flooded rice production with some form of aerobic rice production, will contribute to achieving adaptation objectives, while also reducing global warming potential and minimizing the risk of negative health impacts due to consumption of arsenic contaminated rice.

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Section: Soil Amendments and Tillagementioning

confidence: 99%

Managing Water and Soils to Achieve Adaptation and Reduce Methane Emissions and Arsenic Contamination in Asian Rice Production

Wichelns

2016

Water

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“…To be a truly sustainable method of energy generation the following points must be addressed: (1) there must be meaningful quantities available; (2) the biomass source must not compete with food sources for land usage; and (3) the energy generation process must not emit harmful substances to the environment.…”

Section: Introductionmentioning

confidence: 99%

“…Each tonne of RH can produce approximately 800 kWh of electricity. For a country such as Cambodia, which generates 1.85 MT of RH each year, this is sufficient to meet almost half of the annual electricity consumption of 3.1 TWh [1,2]. However, even for their more prosperous and energy hungry neighbour, Thailand, the RH generated each year has the potential to meet around 3% of the annual electricity demand.…”

Section: Introductionmentioning

confidence: 99%

“…In crystalline form this RHA poses a potential hazard and has zero, or even negative residual value. However, amorphous silica is a highly desirable product for a wide range of applications [1]. It is also much easier to digest in alkaline medium than crystalline silica and this potentially represents a gentler route for the production of sodium silicates and/or synthetic zeolites [5].…”

Section: Introductionmentioning

confidence: 99%

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Valorisation of rice husks using a TORBED® combustion process

Blissett¹,

Sommerville

Rowson

et al. 2017

Fuel Processing Technology

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World production of rice exceeds 750 million tonnes per year of which a fifth is removed in the form of rice husk during the milling process. The use of rice husks as a source of sustainable and renewable energy is often hindered by lack of capital and a poor understanding of rice husk combustion characteristics. This results in the selection of poor quality technology which generates significant quantities of harmful crystalline silica waste. Despite previous work in the area, detailed characterisation of the combustion of rice husk ash in a TORBED reactor across a wide temperature range has not yet been attempted and little effort has been directed towards assessing the economic viability of generating quality rice husk ashes. The use of a TORBED reactor enables low residual carbon after combustion without the generation of harmful crystalline material. Rice husk was combusted in a 400mm reactor at temperatures between 700-950°C. In the subsequent characterisation studies the resulting materials were shown to be fully amorphous high purity silica (> 95%) and were readily digested in a series of alkaline digestion experiments. Complete silica conversion was only possible using uneconomic Na2O/SiO2 ratios and further optimisation of the combustion process to generate higher surface area material is necessary to increase the digestion rates further. Provisional economic analysis suggests that sales of the by-product enhance the returns from rice husk based power generation. TORBED reactors enable the combustion of rice husk with considerable operating flexibility and they generate products that could be used to displace resource intensive products and processes thus, added value from the by-products can be obtained by using TORBED reactor technology.

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“…A produção de casca de arroz no Brasil em 2014 foi de 2.424.400 t, gerando o equivalente a 484.880 t de cinza [10]. Assim, de modo a se minimizar o aspecto de degradação ambiental provocada pelo não aproveitamento e disposição inadequada da CCA e considerando-se a potencialidade do seu emprego como maté-ria prima na formação de compostos de cimentação para aplicações rodoviárias, procurou-se adequá-la como agente auxiliar na estabilização solo-cal.…”

Section: Introductionunclassified

Efeito da cinza de casca de arroz na plasticidade e compactação de uma mistura solo-cal

Alcântara

Santos²,

Souza

et al. 2017

Matéria (Rio J.)

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RESUMOO artigo direciona-se à avaliação do uso potencial de cinza de casca de arroz (CCA) como pozolana, atuando juntamente com cal no processo de estabilização química de um solo residual da região de Ilha Solteira, estado de São Paulo, Brasil.Trabalhou-se com o teor de cal de 8% e com os teores de cinza de 5% e 10% em relação ao peso de solo seco. Na análise do comportamento de engenharia do solo e das misturas solo-cal e solo-cal-CCA, foram considerados parâmetros geotécnicos de caracterização (distribuição granulométrica, limite de liquidez (LL) e limite de plasticidade (LP)), parâmetros ótimos de compactação obtidos na energia do ensaio Proctor normal (umidade ótima (w ot ) e massa específica aparente seca máxima ( dmax )), bem como foi realizada a classificação dos materiais segundo a Metodologia MCT.Os resultados obtidos levaram à conclusão de que a adição da CCA foi responsável por: (i) aumentos nos parâmetros LL, LP e w ot , bem como redução nos parâmetros IP e  dmax do solo e de sua mistura com cal; (ii) segundo a Metodologia MCT, o solo e suas misturas foram classificados como solos arenosos lateríticos (LA').Palavras-chave: solo-cal, cinza de casca de arroz, propriedades geotécnicas. ABSTRACTThis paper addresses the evaluation of the potential use of ash from rice peel as pozzolanic material acting together with hydrated lime in the chemical stabilization of a residual soil from the Ilha Solteira region, São Paulo State, Brazil.Ash contents of 5% and 10% were added to a soil previously stabilized with 8% of hydrated lime, all contents related to soil dry weight, in order to evaluate soil and mixtures performances regarding geotechnical indexes (grain size distribution, liquid limit (LL) and plastic limit (PL)), optimum compaction parameters (optimum water content (w ot ) and specific apparent maximum dry mass ( dmax )) determined at the standard

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Potential applications of rice husk ash waste from rice husk biomass power plant

Cited by 598 publications

References 86 publications

Managing Water and Soils to Achieve Adaptation and Reduce Methane Emissions and Arsenic Contamination in Asian Rice Production

Managing Water and Soils to Achieve Adaptation and Reduce Methane Emissions and Arsenic Contamination in Asian Rice Production

Valorisation of rice husks using a TORBED® combustion process

Efeito da cinza de casca de arroz na plasticidade e compactação de uma mistura solo-cal

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