Publication: การดูดซับไอออนโลหะหนักผสมในน้ำเสียสังเคราะห์แบบแข่งขันโดยใช้เปลือกเมล็ดทานตะวันปรับสภาพ
0
0
Issued Date
2012
Resource Type
Language
tha
File Type
application/pdf
Access Rights
open access
Rights
ผลงานนี้เผยแพร่ภายใต้ สัญญาอนุญาตครีเอทีฟคอมมอนส์แบบ แสดงที่มา-ไม่ใช้เพื่อการค้า-ไม่ดัดแปลง 4.0 (CC BY-NC-ND 4.0)
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Suggested Citation
ชุติวัฒน์ ลิขิตาภรณ์, วรัท กาญจนพิษณุ์ (2012). การดูดซับไอออนโลหะหนักผสมในน้ำเสียสังเคราะห์แบบแข่งขันโดยใช้เปลือกเมล็ดทานตะวันปรับสภาพ. สืบค้นจาก: https://hdl.handle.net/20.500.14740/10550
Alternative Title(s)
Competitive adsorption of heavy metal ions in aqueous solution by modified sunflower seed husk
Author(s)
Advisor(s)
Organization
Abstract
The aims of this engineering project were studied and compared the efficiency of competitive
adsorption of Pb2 Cd2 Zn2 and Ni2 present in quaternary mixture with single metal solution by
uncarbonized sunflower seed husk and carbonized sunflower seed husk at 600 °C which particle
size were smaller than 90 micrometer at pH 5. The experimental results shown that the adsorption
percentage by unmodified sunflower seed husk was in order of Cd2 > Pb2 > Zn2 > Ni2 in single
metal ion solution and Pb2 > Cd2 > Zn2 > Ni2 in quaternary mixture. For carbonized sunflower
seed husk, the adsorption percentage was in order of Pb2 > Cd2 > Zn2 > Ni2 in single ion metal
solution and Pb2 > Cd2 > Zn2 > Ni2 in quaternary mixture respectively. The adsorption data of
carbonized sunflower seed husk were fitted with Langmuir adsorption isotherms for Cd2 and
Zn~ . In other hands. Ni’ and Pb2 were fitted to Freundlich adsorption isotherm. For the
uncarbonized one all metal ion adsorptions were fitted to Freundlich adsorption isotherm. The
adsorption process was found to follow a pseudo-second order rate mechanism for single metal
ion adsorption process for competitive adsorption Cd2 Pb2 and Zn2 were found to follow a
pseudo-second order. In contrast Ni2 adsorption, it was found to follow pseudo-first order.