Science and Technology

Anaerobic digestion of water hyacinth juice in upflow bubble column bioreactor for production of biogas and nutrient recovery

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Author(s): Hailemariam Zewudu Achenef Email (s): ibelieveican3.91@yahoo.com Institution or organization of origin: Bahir Dar University Country: Ethiopia Abstract This research aimed to study the anaerobic digestion of water hyacinth juice in an up-flow bubble column bioreactor for the production of biogas and nutrient recovery from digestate. The experiments were performed at a pH range of 6.5-7.5, temperature of 37ºC … Read more

Arsenic and hydrated silica remotion from drinking water by electrocoagulation using iron as sacrificial electrodes

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Author(s): Jonathan Valentin Reyes Email (s): john_clanh@hotmail.com Institution or organization of origin: Universidad de Guanajuato Country: Mexico Abstract Many regions in the world consider groundwater a safe source of drinking water; however, various metallic and non-metallic ions are found in groundwater1. In Bajio region, central Mexico, the groundwater is mainly polluted with arsenic and hydrated silica, among other ions … Read more

Análisis Cuantitativo del Drenaje y las Características Morfométricas de la Cuenca de la Laguna de Atotonilco, Jalisco

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Author(s): Demetrio Meza Email (s): demetrio.meza@academicos.udg.mx Institution or organization of origin: Universidad de Guadalajara Country: Mexico Abstract La cuenca de la laguna de Atotonilco es endorreica, depende de la captación de agua de las sierras aledañas que mantienen los mantos freáticos, sus características geomorfológicas actúan como reguladores de temperatura ambiental. El análisis morfométrico a través de parámetros de forma, … Read more

Semicontinuous anaerobic digestion of excessive growing aquatic weeds harvested from Lake Biwa for energy and nutrient recovery

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Author(s): Masaaki Fujiwara Email (s): fujimasa0523@soka.gr.jp Institution or organization of origin: Soka University Country: Japan Abstract Over-growing aquatic weeds have caused several environmental issues all over the world. Anaerobic digestion is expected as an effective way to treat aquatic weeds because it can recover methane gas as an energy resource and nutrients dissolved in a digestate from high moisture … Read more

The bright side of a weed: Daphnia as a biosensor on the assessment of cyanotoxins (saxitoxins) phytoremediation by the invasive water hyacinth (Pontederia crassipes)

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Author(s): Mauro Vilar Email (s): maurovilar@gmail.com Institution or organization of origin: Federal University of Rio de Janeiro Country: Brazil Abstract: Cyanobacterial blooms are a worldwide issue mainly due to cyanotoxins that compromise water quality and affect aquatic organisms. Several methods are employed on contaminants remediation in water, but the use of aquatic plants has proven to be a promising … Read more

Remoción de Cromo hexavalente de un lixiviado industrial con el empleo de un compósito de biocarbono impregnado con maghemita

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Author(s): Elsa Janet Corona Rivera Email (s): arodiberna@ugto.mx Institution or organization of origin: Universidad de Guanajuato Country: Mexico Abstract: Uno de los mayores desafíos que actualmente enfrenta la humanidad es el acceso al agua limpia. Uno de los contaminantes inorgánicos de mayor preocupación por su toxicidad es el Cr (VI), el cual está incluido en la lista de la … Read more

Evaluation of microalgae-nitrifying bacteria immobilized in light shielding hydrogel consortia under strong light irradiation

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Author(s): Kento Nishi Email (s): kento-nishi@soka.gr.jp Institution or organization of origin: Soka University Country: Japan Abstract Wastewater containing nitrogen is normally treated through nitrification using aeration, and denitrification. However, aeration is an most energy-intensive and costly process and may account for 45–75% of energy consumption in wastewater treatment plants. Many studies using microalgae-bacterial consortia as a new wastewater treatment … Read more

Comparing of effect of various conductive materials and substrates on enhancement of methane production

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Author(s): Stella Chan Email (s): e20m5801@soka-u.jp Institution or organization of origin: Soka University Country: Japan Abstract Anaerobic digestion (AD) is a microbial process that produces renewable energy in the form of methane gas by treating various organic waste. Recently, it has been reported that addition of conductive materials (CMs) can help improve methanogenesis by promoting direct interspecies electron transfer … Read more

Effect of sedimentation time on methane generation rate of compressed water hyacinth juice

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Author(s): Anas Hijazi Email (s): hijazianas@soka.gr.jp Institution or organization of origin: Soka University Country: Japan Abstract Water hyacinth (WH) (Eichhornia crassipes) is a widespread aquatic weed threatening waterbodies and dependent life-forms by clogging streams and causing fishing interference. Anaerobic digestion (AD) is a low-cost and eco-friendly method that uses high-moisture waste like WH to generate biogas. However, a pre-treatment … Read more

Understanding the structural and chemical composition of lignin-rich steam-exploded Ludwigia grandiflora during semi continuous anaerobic digestion

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Author(s): Pranshu Bhatia Email (s): bhatiapranshu1995@soka.gr.jp Institution or organization of origin: Soka University Country: Japan Abstract Ludwigia grandiflora, an invasive aquatic weed that thrives in waterways, lakes and ponds, has been causing problems like deterioration of water quality, clogging of water streams due to its overgrowth. Therefore, harvesting and appropriate utilisation of the weed is necessary. Anaerobic digestion (AD) … Read more