$SO(n)$, $SU(n)$, $Sp(n)$-homology Spheres with Codimension Two Principal Orbits

Nakanishi, Aiko

doi:10.3836/tjm/1270151729

Cited by 2 publications

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“…The removal of lead (II) from water and wastewater is highly essential. According to the World Health Organization (WHO), the permissible level of lead in drinking water is 0.01 mg/L in the United States, Canada, and Japan [3].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Adsorbent with Lead Removal Ability from Paper Sludge Using Sulfur-impregnation

Wajima

2014

APCBEE Procedia

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During the manufacture of recycled paper, paper sludge is discharged as an industrial waste. The amount of sludge discharged from manufacturing plants increases annually. In this study, the organic constituents, such as cellulose, in the sludge were converted into carbonaceous heavy metal absorbents using sulfur treatment, and its removal ability of lead from aqueous solution was examined. The sludge was treated with 5 M HCl to remove inorganic content, and then immersed in 1 M K 2 S solution to prepare sulfur-immersed sludge. The immersed-sludge was heated at 100-1000 o C for 1 hour in nitrogen gas to produce the sulfur-impregnated adsorbent by pyrolysis. The product obtained at 400 o C (Product-400) has a high removal ability for lead ion, which has high specific surface areas and high sulfur content. The product-400 shows the highest adsorption of lead from aqueous solution, and high selective removal for lead ions in low pH solution.

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Section: Introductionmentioning

confidence: 99%

Preparation of Adsorbent with Lead Removal Ability from Paper Sludge Using Sulfur-impregnation

Wajima

2014

APCBEE Procedia

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“…Lead poisoning in humans causes severe damage to the kidney, nervous system, reproductive system, liver, and brain, causing sickness or death [2], and the removal of lead (II) from water and wastewater is highly essential. According to the World Health Organization (WHO), the permissible level of lead in drinking water is 0.01 mg/L in the United States, Canada, and Japan [3].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Adsorbent with Lead Removal Ability Using Sulfur-Impregnation

Wajima

2013

AMR

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Preparation of the adsorbent with lead removal ability using a sulfur impregnation was studied. Coal, palm shell, waste tire and diatomite, were used as raw materials. Raw material was mixed with K2S powder and then heated at 800 °C or 900 °C for 30 min in nitrogen to produce a sulfur-impregnated adsorbent. The sulfur-impregnated adsorbents prepared from coal, palm shell, waste tire and diatomite at 800 °C have lead removal property, and the order of lead removal ability is the adsorbent from coal = palm shell > waste tire > diatomite. The sulfur-impregnated adsorbent prepared from coal had a high sulfur content and high specific surface area. The adsorbent showed higher removal ability for lead ions from aqueous solution than zinc and cadmium ions in ternary Pb2+-Zn2+-Cd2+solution. These results indicate that the sulfur-impregnated adsorbent has high selective adsorption ability for lead ions in aqueous solutions.

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$SO(n)$, $SU(n)$, $Sp(n)$-homology Spheres with Codimension Two Principal Orbits

Cited by 2 publications

References 0 publications

Preparation of Adsorbent with Lead Removal Ability from Paper Sludge Using Sulfur-impregnation

Preparation of Adsorbent with Lead Removal Ability from Paper Sludge Using Sulfur-impregnation

Preparation of Adsorbent with Lead Removal Ability Using Sulfur-Impregnation

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