Cassava Wastewater Treatment in Fixed-Bed Reactors: Organic Matter Removal and Biogas Production

Watthier, Elisangela; Andreani, Cristiane Lurdes; Torres, Douglas Guedes Batista; Kuczman, Osvaldo; Tavares, Maria Hermínia Ferreira; Lopes, Deize Dias; Gomes, Simone Damasceno

doi:10.3389/fsufs.2019.00006

Cited by 24 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A feature of cassava wastewater is the presence of linamarin and lotaustralin compounds, cyanogenic glycosides that are lost in processing (Padmaja 1995). Near 5 to 7 L of wastewater are generated from a kilogram of fresh cassava root (Watthier et al 2019). The cassava wastewater has been studied for more than 30 years for possible applications in pest management (Pinto-Zevallos et al 2018), against insects, nematodes, and fungi (Table 1).…”

Section: Cassava Wastewatermentioning

confidence: 99%

Wastewater as a resource for pest control: An overview

Bailón-Salas

Ordaz-Díaz²,

López-Serrano

et al. 2021

BioRes

View full text Add to dashboard Cite

Pests have a negative impact on the economy and the environment. There is an increased urgency for adequate pest control because many pests show high adaptation and climate change has created favorable circumstances for pests. For pest control, synthetic chemicals are used that are lethal to non-target organisms and are toxic to pollinators and aquatic invertebrates. Chemical compounds in plants and derivatives from lignocellulosic materials act against pests. The wastewater from lignocellulosic biomass is a potential source of new compounds with bactericidal, fungicidal, and pesticidal effects that have demonstrated inhibitory activity against plant pathogens. Fungicidal, nematicidal, insecticidal, larvicidal, and bactericidal activities have been proven. Inorganic and organic compounds, such as phenols, aldehydes, esters, and furanics, are the main ones identified. Due to the antimicrobial activity of wastewater, applying it to the soil can modify the composition and structure of key microbial communities. Deep research about richness, biodiversity, functionality, and microbials is needed. This review provides a comprehensive overview of wastewater types that have been applied and possible sources to obtain potential compounds for pest control. Moreover, associated active compounds, recovery techniques, and environmental impacts are reviewed.

show abstract

Section: Cassava Wastewatermentioning

confidence: 99%

Wastewater as a resource for pest control: An overview

Bailón-Salas

Ordaz-Díaz²,

López-Serrano

et al. 2021

BioRes

View full text Add to dashboard Cite

show abstract

“…The factors that affect biogas production, among others: Organic Loading Rate (OLR), Hydraulic Retention Time (HRT), kind of bacterial, pH, temperature, and inhibitors [3,6,10,11]. While several wastewater treatment processes are used to produce biogas, including: Anaerobic Digestion, UASB, Fixed Bed Reactor (FBR), Horizontal Reactor, Anaerobic Baffled Reactor (ABR) [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Production of biogas using AnF2B reactor from cassava starch wastewater with consortium bacteria as biocatalyst

Prayitno

Rulianah

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Cassava starch wastewater contains organic biodegradable (BOD, COD) with high concentrations so that it can be used as raw material for biogas through an anaerobic decomposition process. The purpose of this study was to evaluate the behavior of the continuous flow AnF2B reactor, related to the production of biogas in a variety of organic loads, from cassava starch wastewater. The AnF2B reactor has three parts of space with a total volume of 50 L, where each space contains biofilter (wasp nest-shaped) which is useful for the growth of bacterial consortium. The experiments were carried out by flowing wastewater into the AnF2B reactor continuously with organic loading of 2 g, 3 g, 4 g, and 5 g. The decomposition time was 1-10 days. The temperature in the reactor was maintained at 37 - 39 C and pH: 6.5 - 8. The results showed that biogas production was influenced by the organic load of wastewater, where the maximum biogas production of 6.926 L was obtained at an organic load of 5 g of COD and a biodegradation time of 3 days. The biogas produced contains CH4 (85%), CO2 (14.5%), and CO (0.5%).

show abstract

“…According to Achi et al [12], 3 m 3 to 6 m 3 of cassava effluent could be generated during processing of 6 to 8 tons of cassava tubers supplied daily. Apart from using the effluent for production of biogas [13,14], hydrogen [15], and methane [16,17], it can be utilized to prepare fertilizer [18]. Moreover, cassava effluent has been found to be a source of starch suitable for preparation of binding agent that can be applied as a coating material [19,20] and in the development of composite insulation panels [21 -23].…”

Section: Introductionmentioning

confidence: 99%

“…Bulletin of the Polytechnic Institute of Iași, vol.68(72),1,[7][8][9][10][11][12][13][14][15][16][17][18][19][20] 2022 …”

mentioning

confidence: 99%

Electrical and Dielectric Properties of Discs Fabricated Using Periwinkle Shell Nanopowder and Dry Cassava Starch

Umanah

Ekpenyong

Akpan

2022

BULETINUL INSTITUTULUI POLITEHNIC DIN IAȘI. Secția Matematica. Mecanică Teoretică. Fizică

View full text Add to dashboard Cite

Periwinkle shells and cassava effluent are wastes generated in very large quantities and majorly under-utilized. Due to existence of inefficient waste management systems in developing countries, their disposal is by indiscriminate dumping, a practice that adversely affects the environment and human health. Hence, there is an urgent need to examine their potentials for possible engineering applications in order to further proffer a safe way of managing them. In this work, Periwinkle shell nanopowder and cassava starch were prepared from the wastes and then used to fabricate disc-shaped samples. The samples were developed with various lengths/thicknesses and in triplicates, after which their electrical and dielectric properties were evaluated. For lengths/thicknesses of 2.6 mm to 6.5 mm, the mean electrical resistance and electrical resistivity obtained were (9.89 to 23.00) × 106 Ω and (8.231 × 105) Ωm respectively. Over the temperature range of 20°C to 50°C, the respective results for thermal sensitivity, activation energy, and temperature coefficient of resistance assessment were (6982 ± 158) K, 0.60 eV, and −8.12 %/K. More so, it was observed that quality factor increased with sample’s thickness and frequency of applied signal. With increase in frequency from 0.10 kHz to 100.00 kHz, the dielectric constant of the studied sample decayed exponentially from (20.54 ± 0.04) to (1.67 ± 0.01). Aside meeting the market requirements for NTC thermistors, it was found that the sample could serve as a suitable alternative to conventional dielectrics like mica, paper, plastic film, tantalum oxide, and aluminium oxide for production of capacitors.

show abstract

Cassava Wastewater Treatment in Fixed-Bed Reactors: Organic Matter Removal and Biogas Production

Cited by 24 publications

References 32 publications

Wastewater as a resource for pest control: An overview

Wastewater as a resource for pest control: An overview

Production of biogas using AnF2B reactor from cassava starch wastewater with consortium bacteria as biocatalyst

Electrical and Dielectric Properties of Discs Fabricated Using Periwinkle Shell Nanopowder and Dry Cassava Starch

Contact Info

Product

Resources

About