نتایج جستجو برای: some such alkali treatments as naoh

تعداد نتایج: 6553391  

Journal: :international journal of environmental research 2013
m. yamada h. harada m. yamauchi t. yamaguchi a. ohashi

one of the main disadvantages of anaerobic wastewater treatment at a low ph is the significantoperational cost due to the addition of necessary alkali. to reduce alkali supplement and thus the cost, thisstudy proposes a sequential multi-feed (sqmf) mode (distributed feeding) and effluent recycle (er) mode.experiments were conducted with a pilot-scale (2.5 m3) thermophilic (55°c) multi-staged up...

Journal: :international journal of environmental research 0
m. yamada department of civil and environmental engineering, kagoshima national college of technology, 1460-1 shinko, hayato-cho, kirishima, kagoshima, 899-5193, japan h. harada department of civil and environmental engineering, tohoku university, 6-6-06 aoba, aramaki, aoba ku, sendai, miyagi, 980-8579, japan m. yamauchi department of civil and environmental engineering, kagoshima national college of technology, 1460-1 shinko, hayato-cho, kirishima, kagoshima, 899-5193, japan t. yamaguchi department of civil and environmental engineering, nagaoka university of technology, 1603-1 kamitomiokamachi, nagaoka niigata, 940-2188, japan a. ohashi department of social and environmental engineering, hiroshima university, 1-4-1 kagamiyama, higashihiroshima, hiroshima, 739- 8527, japan

one of the main disadvantages of anaerobic wastewater treatment at a low ph is the significantoperational cost due to the addition of necessary alkali. to reduce alkali supplement and thus the cost, thisstudy proposes a sequential multi-feed (sqmf) mode (distributed feeding) and effluent recycle (er) mode.experiments were conducted with a pilot-scale (2.5 m3) thermophilic (55°c) multi-staged up...

2014
Jersson Plácido Sergio Capareda

Background: Cotton gin trash (CGT) is a lignocellulosic residue that can be used in the production of cellulosic ethanol. In a previous research, the sequential use of ultrasonication, liquid hot water, and ligninolytic enzymes was selected as pretreatment for the production of ethanol from CGT. However, an increment in the ethanol production is necessary. To accomplish that, this research eval...

Nahid Hasanzadeh, Negar Afra Sayed Khatibolah Sadrnezhad

Porous NiTi alloys has a series of unique properties such as shape memory effect, superelastic behavior and energy absorbability that make them usable in a wide range of medical and industrial appliances. But the more probability of Ni release from a porous NiTi compare to the nonporous one has restricted it’s uses in implants. In the present research for resolving the problem, performing a cal...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1391

nowadays enhancing critical thinking in learners is considered one of the foreign language teachers’ tasks due to its high position in foreign language classrooms. when it comes to selecting materials for language classrooms, there are obviously some criteria that teachers should apply. the present study aimed at a critical thinking based analysis of ten picture story books and ten folktales th...

2011
Karuppannan Bashkaran Embong Zunaina Shaharuddin Bakiah Siti Amrah Sulaiman KNS Sirajudeen Venkatesh Naik

BACKGROUND Alkali injury is one of the most devastating injuries to the eye. It results in permanent unilateral or bilateral visual impairment. Chemical eye injury is accompanied by an increase in the oxidative stress. Anti-inflammatory and antioxidant agents play a major role in the treatment of chemical eye injuries. The purpose of this study is to evaluate the anti-inflammatory (clinical and...

Journal: :Engineering 2021

Engineering the electrical properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) holds great potential for various applications such as sensors, thermoelectric (TE) generators, and hole transport layers in solar cells. Various strategies have been applied to achieve optimal properties, including base solution post-treatments. However, working mechanism exact details ...

2016
Jan Koplík Lukáš Kalina Jiří Másilko František Šoukal

The fixation of heavy metals (Ba, Cu, Pb) in an alkali-activated matrix was investigated. The matrix consisted of fly ash and blast furnace slag (BFS). The mixture of NaOH and Na-silicate was used as alkaline activator. Three analytical techniques were used to describe the fixation of heavy metals-X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) equipped with energy di...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

Journal: :Journal of the Korean wood science and technology 2023

Densification is an effective method for improving the physical and mechanical properties of low-density wood. However, set-recovery dimensions was found to be problem densified wood due low fixation during densification process. Alkali pretreatment before thought a modification process improve dimensional stability In this research, samples used were boiled in 1.25 N sodium hydroxide (NaOH) so...

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