The Use of Rice Husk for Removal of Toxic Metals from Waste Water

Munaf, Edison; Zein, Rahmiana

doi:10.1080/09593331808616549

Cited by 85 publications

(43 citation statements)

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“…The composition of RH is 53.0% cellulose, 20.0% lignin, 4.60% hemicellulose, and 13.9% silica/ash. RH is normally burnt as a crude source of energy (Munaf and Zein 1997;Jansen et al 2004), though it has also been used as bio-fertilizer, absorbent material, and pest control agent (Battegazzore et al 2014). This biomass source could be explored more extensively in view of its promising composition and advantageous features such as low density, renewability, and reasonable strength and stiffness (Shukla et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study and Structural Analysis of Cellulose Isolated from Rice Husk: Microwave Irradiation, Optimization, and Treatment Process Scheme

Khandanlou¹,

Ngoh²,

Chong³

2016

BioResources

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The goal of this study was to pretreat rice husk (RH) using a microwaveassisted pretreatment process coupled with chlorite delignification and alkaline treatment to facilitate the isolation of cellulose. The isolated cellulose was characterized and subjected to structural analysis and a thermal stability test to ascertain the efficiency of the isolation from a visual perspective. The optimum condition for the microwave-assisted pretreatment of RH was determined by response surface methodology (RSM). The effects of three independent variables-microwave power, irradiation time, and solvent ratio-were investigated based on the maximum content of the RH being pretreated. At the optimum parameters of microwave power of 400 w, a 10-min duration, and a solvent ratio of 80.0% v/v, the pretreatment efficiency of RH was 10.0%. Compared with the conventional Soxhlet technique, the microwave pretreatment was superior. The X-ray powder diffraction (PXRD) result for the isolated cellulose showed that cellulose was highly crystalline (CrI = 65.0%). Fourier transform infrared spectroscopy (FT-IR) verified that most of the lignin and hemicelluloses were removed from the isolated cellulose after the chemical treatment. Furthermore, the TGA study revealed that the thermal stability of RH cellulose was higher than the original RH.

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Section: Introductionmentioning

confidence: 99%

Feasibility Study and Structural Analysis of Cellulose Isolated from Rice Husk: Microwave Irradiation, Optimization, and Treatment Process Scheme

Khandanlou¹,

Ngoh²,

Chong³

2016

BioResources

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“…These high technology processes have significant disadvantages, including incomplete metal removal, requirement for expensive equipments and monitoring system, high reagent and energy requirement system, or generation of toxic sludge or other waste products that require disposal [4]. The low cost agricultural waste by-products such as sugarcane bagasse [5,6,7,8,9,10], rice husk [11,12,13,14,15], sawdust [16,17,18], coconut husk [5,19], oil palm shell [20], neem bark [21], etc, for the elimination of heavy metals from wastewater have been investigated by various researchers. Cost is an important parameter for comparing the sorbent materials.…”

Section: Introductionmentioning

confidence: 99%

Column Studies on Chromium (VI) Adsorption onto Kala Jamun (Syzygiumcumini L.) Seed Powder (KSP)

2017

IJACEBS

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Abstract-This paper evaluate the industrial use of Kala Jamun (Syzygiumcumini L.) Seed powder (KSP) for the continuous adsorption of Cr(VI) in a column adsorption process. Adsrption of Cr(VI) onto Kala jamun Seed Powder have been examined with the variation of (a) bed depth of the adsorbents, (b) flow rate of the adsorbents and (c) Cr(VI) concentration. The results showed that both the adsorption and the regeneration of the Cr(VI) onto Kala Jamun (Syzygiumcumini L.) seed Powder (KSP) can effectively occur in the column mode of adsorption. On increasing the bed depth, the adsorption of Cr(VI) onto KSP increases whereas on increasing the flow rate and the Cr(VI) concentration of KSP adsorption decreases. The results of the column studies were also fitted to Bed Depth Service Time (BDST) model. The BDST model was appropriate for designing the column for industrial purpose.

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“…A retenção de metais pesados em resíduos orgânicos (casca de arroz) foi verificada por Munaf & Zein (1997). Eles obtiveram retenção de até 85% de Zn e Cu em solução, dependendo do tamanho das partículas da casca do arroz.…”

Section: Colunas De Bagaço De Cana-de-açúcarunclassified

Retenção Da Carga Orgânica E De Cations Em Filtros Operando Com Águas Residuárias Da Suinocultura

Neto¹,

Freitas²,

Rezende³

et al. 2011

R_I

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A remoção de poluentes de águas residuárias, pode ser feita por processos físicos, químicos e biológicos. Os processos físicos, como a filtração, podem ser utilizados como alternativa de grande eficiência na remoção de sólidos totais em suspensão. Como material filtrante para o tratamento de água residuária, foram utilizados o bagaço de cana-de-açúcar e Solo (Nitossolo Vermelhos Distrófico). Os materiais filtrantes foram caracterizados quanto à densidade de cada coluna e sua composição química. As colunas de filtragem foram constituídas de tubos de PVC de 100 mm de diâmetro e comprimento de 1 m. O material foi acondicionado nas colunas até atingir a altura de 0,90 m, sofrendo compressão. O experimento foi arranjado num delineamento inteiramente casualizado (DIC), com oito tratamentos, sendo dois materiais filtrantes e quatro doses diferentes (4.960, 9.930, 14.900 e 19.860 m 3 ha -1 ) de água residuária, com três repetições por tratamento. O filtro composto de bagaço de cana-de-açúcar apresentou boa eficiência, 74,8% na remoção de Ca e 56,2% Mg comparada com o solo, observou-se aumento da Demanda Biológica de Oxigênio (DBO) e Demanda Química de Oxigênio (DQO) do material filtrado com relação à água residuária de suinocultura. O solo apresentou ótima retenção atingindo absorção de 100% para o Cu e 81,9% para o Zn.Palavras-chaves: DBO, eflunte, poluição do solo. CROZARIOLLO NETO, V. S.; FREITAS, P. S. L. de; REZENDE, R.; DOLL, M. M. R.; BRANDÃO, D. ORGANIC LOADING AND CATIONS RETENTION IN FILTERS OPERATING WITH SWINE WASTEWATER ABSTRACTPollutants removal from residual water can be done through physical, chemical and biological processes. Physical processes such as filtration can be used as a highly efficient alternative in removing suspended total solids. As filtering material for the treatment of residual water, sugarcane bagasse and Soil (Dystrophic Red Nitosol) were used. The filtering materials were characterized regarding each column density and its chemical composition. Filtration columns were constituted of 100 mm diameter and 1 m long PVC tubes. The material was placed in the columns until 0.90 m high suffering compression. The experiment was arranged in a randomized block design with eight treatments with two filtering materials and four different rates of swine wastewater (4.960, 9.930, 14.900 and 19.860 m 3 ha -1 ) and three replications per treatment. The filter composed of sugarcane bagasse showed good efficiency, 77,8% in Ca

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The Use of Rice Husk for Removal of Toxic Metals from Waste Water

Cited by 85 publications

References 0 publications

Feasibility Study and Structural Analysis of Cellulose Isolated from Rice Husk: Microwave Irradiation, Optimization, and Treatment Process Scheme

Feasibility Study and Structural Analysis of Cellulose Isolated from Rice Husk: Microwave Irradiation, Optimization, and Treatment Process Scheme

Column Studies on Chromium (VI) Adsorption onto Kala Jamun (Syzygiumcumini L.) Seed Powder (KSP)

Retenção Da Carga Orgânica E De Cations Em Filtros Operando Com Águas Residuárias Da Suinocultura

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